Science.gov

Sample records for acquisition system proposal

  1. SSC/BCD data acquisition system proposal

    SciTech Connect

    Barsotti, E.; Bowden, M.; Swoboda, C.

    1989-04-01

    The proposed new data acquisition system architecture takes event fragments off a detector over fiber optics and to a parallel event building switch. The parallel event building switch concept, taken from the telephone communications industry, along with expected technology improvements in fiber-optic data transmission speeds over the next few years, should allow data acquisition system rates to increase dramatically and exceed those rates needed for the SSC. This report briefly describes the switch architecture and fiber optics for a SSC data acquisition system.

  2. Proposal to upgrade the MIPP data acquisition system

    SciTech Connect

    Baker, W.; Carey, D.; Johnstone, C.; Kostin, M.; Meyer, H.; Raja, R.; /Fermilab

    2005-03-01

    The MIPP TPC is the largest contributor to the MIPP event size by far. Its readout system and electronics were designed in the 1990's and limit it to a readout rate of 60 Hz in simple events and {approx} 20 Hz in complicated events. With the readout chips designed for the ALICE collaboration at the LHC, we propose a low cost effective scheme of upgrading the MIPP data acquisition speed to 3000 Hz.

  3. Centralized Book Acquisition for New York State: Proposed Computer System. Part II: System Design.

    ERIC Educational Resources Information Center

    Stein (Theodore) Co., New York, NY.

    The logic of the system presented in this report is divided into five parts for computer processing and manipulation. They are: (1) incorporating publication information and Library of Congress catalog copy into the system, (2) processing of authority files and assignment of supplier, (3) preparing data for cataloging and acquisitions, (4)…

  4. The simulation of a data acquisition system for a proposed high resolution PET scanner

    SciTech Connect

    Rotolo, C.; Larwill, M.; Chappa, S.; Ordonez, C.

    1993-10-01

    The simulation of a specific data acquisition (DAQ) system architecture for a proposed high resolution Positron Emission Tomography (PET) scanner is discussed. Stochastic processes are used extensively to model PET scanner signal timing and probable DAQ circuit limitations. Certain architectural parameters, along with stochastic parameters, are varied to quantatively study the resulting output under various conditions. The inclusion of the DAQ in the model represents a novel method of more complete simulations of tomograph designs, and could prove to be of pivotal importance in the optimization of such designs.

  5. Interactive specification acquisition via scenarios: A proposal

    NASA Technical Reports Server (NTRS)

    Hall, Robert J.

    1992-01-01

    Some reactive systems are most naturally specified by giving large collections of behavior scenarios. These collections not only specify the behavior of the system, but also provide good test suites for validating the implemented system. Due to the complexity of the systems and the number of scenarios, however, it appears that automated assistance is necessary to make this software development process workable. Interactive Specification Acquisition Tool (ISAT) is a proposed interactive system for supporting the acquisition and maintenance of a formal system specification from scenarios, as well as automatic synthesis of control code and automated test generation. This paper discusses the background, motivation, proposed functions, and implementation status of ISAT.

  6. Data acquisition system

    DOEpatents

    Shapiro, Stephen L.; Mani, Sudhindra; Atlas, Eugene L.; Cords, Dieter H. W.; Holbrook, Britt

    1997-01-01

    A data acquisition circuit for a particle detection system that allows for time tagging of particles detected by the system. The particle detection system screens out background noise and discriminate between hits from scattered and unscattered particles. The detection system can also be adapted to detect a wide variety of particle types. The detection system utilizes a particle detection pixel array, each pixel containing a back-biased PIN diode, and a data acquisition pixel array. Each pixel in the particle detection pixel array is in electrical contact with a pixel in the data acquisition pixel array. In response to a particle hit, the affected PIN diodes generate a current, which is detected by the corresponding data acquisition pixels. This current is integrated to produce a voltage across a capacitor, the voltage being related to the amount of energy deposited in the pixel by the particle. The current is also used to trigger a read of the pixel hit by the particle.

  7. Data Acquisition Systems

    NASA Technical Reports Server (NTRS)

    1989-01-01

    Technology developed during a joint research program with Langley and Kinetic Systems Corporation led to Kinetic Systems' production of a high speed Computer Automated Measurement and Control (CAMAC) data acquisition system. The study, which involved the use of CAMAC equipment applied to flight simulation, significantly improved the company's technical capability and produced new applications. With Digital Equipment Corporation, Kinetic Systems is marketing the system to government and private companies for flight simulation, fusion research, turbine testing, steelmaking, etc.

  8. Advanced Data Acquisition Systems

    NASA Technical Reports Server (NTRS)

    Perotti, J.

    2003-01-01

    Current and future requirements of the aerospace sensors and transducers field make it necessary for the design and development of new data acquisition devices and instrumentation systems. New designs are sought to incorporate self-health, self-calibrating, self-repair capabilities, allowing greater measurement reliability and extended calibration cycles. With the addition of power management schemes, state-of-the-art data acquisition systems allow data to be processed and presented to the users with increased efficiency and accuracy. The design architecture presented in this paper displays an innovative approach to data acquisition systems. The design incorporates: electronic health self-check, device/system self-calibration, electronics and function self-repair, failure detection and prediction, and power management (reduced power consumption). These requirements are driven by the aerospace industry need to reduce operations and maintenance costs, to accelerate processing time and to provide reliable hardware with minimum costs. The project's design architecture incorporates some commercially available components identified during the market research investigation like: Field Programmable Gate Arrays (FPGA) Programmable Analog Integrated Circuits (PAC IC) and Field Programmable Analog Arrays (FPAA); Digital Signal Processing (DSP) electronic/system control and investigation of specific characteristics found in technologies like: Electronic Component Mean Time Between Failure (MTBF); and Radiation Hardened Component Availability. There are three main sections discussed in the design architecture presented in this document. They are the following: (a) Analog Signal Module Section, (b) Digital Signal/Control Module Section and (c) Power Management Module Section. These sections are discussed in detail in the following pages. This approach to data acquisition systems has resulted in the assignment of patent rights to Kennedy Space Center under U.S. patent # 6

  9. Data-acquisition systems

    SciTech Connect

    Cyborski, D.R.; Teh, K.M.

    1995-08-01

    Up to now, DAPHNE, the data-acquisition system developed for ATLAS, was used routinely for experiments at ATLAS and the Dynamitron. More recently, the Division implemented 2 MSU/DAPHNE systems. The MSU/DAPHNE system is a hybrid data-acquisition system which combines the front-end of the Michigan State University (MSU) DA system with the traditional DAPHNE back-end. The MSU front-end is based on commercially available modules. This alleviates the problems encountered with the DAPHNE front-end which is based on custom designed electronics. The first MSU system was obtained for the APEX experiment and was used there successfully. A second MSU front-end, purchased as a backup for the APEX experiment, was installed as a fully-independent second MSU/DAPHNE system with the procurement of a DEC 3000 Alpha host computer, and was used successfully for data-taking in an experiment at ATLAS. Additional hardware for a third system was bought and will be installed. With the availability of 2 MSU/DAPHNE systems in addition to the existing APEX setup, it is planned that the existing DAPHNE front-end will be decommissioned.

  10. Enhanced Data-Acquisition System

    NASA Technical Reports Server (NTRS)

    Mustain, Roy W.

    1990-01-01

    Time-consuming, costly digitization of analog signals on magnetic tape eliminated. Proposed data-acquisition system provides nearly immediate access to data in incoming signals by digitizing and recording them both on magnetic tape and on optical disk. Tape and/or disk later played back to reconstruct signals in analog or digital form for analysis. Of interest in industrial and scientific applications in which necessary to digitize, store, and/or process large quantities of experimental data.

  11. HYPERCP data acquisition system

    SciTech Connect

    Kaplan, D.M.; Luebke, W.R.; Chakravorty, A.

    1997-12-31

    For the HyperCP experiment at Fermilab, we have assembled a data acquisition system that records on up to 45 Exabyte 8505 tape drives in parallel at up to 17 MB/s. During the beam spill, data axe acquired from the front-end digitization systems at {approx} 60 MB/s via five parallel data paths. The front-end systems achieve typical readout deadtime of {approx} 1 {mu}s per event, allowing operation at 75-kHz trigger rate with {approx_lt}30% deadtime. Event building and tapewriting are handled by 15 Motorola MVME167 processors in 5 VME crates.

  12. Data acquisition system

    DOEpatents

    Phillips, David T.

    1979-01-01

    A data acquisition system capable of resolving transient pulses in the subnanosecond range. A pulse in an information carrying medium such as light is transmitted through means which disperse the pulse, such as a fiber optic light guide which time-stretches optical pulses by chromatic dispersion. This time-stretched pulse is used as a sampling pulse and is modulated by the signal to be recorded. The modulated pulse may be further time-stretched prior to being recorded. The recorded modulated pulse is unfolded to derive the transient signal by utilizing the relationship of the time-stretching that occurred in the original pulse.

  13. Ocean Data Acquisition System

    NASA Technical Reports Server (NTRS)

    Johnson, B.; Cavanaugh, J.; Smith, J.; Esaias, W.

    1988-01-01

    The Ocean Data Acquisition System (ODAS) is a low cost instrument with potential commercial application. It is easily mounted on a small aircraft and flown over the coastal zone ocean to remotely measure sea surface temperature and three channels of ocean color information. From this data, chlorophyll levels can be derived for use by ocean scientists, fisheries, and environmental offices. Data can be transmitted to shipboard for real-time use with sea truth measurements, ocean productivity estimates and fishing fleet direction. The aircraft portion of the system has two primary instruments: an IR radiometer to measure sea surface temperature and a three channel visible spectro-radiometer for 460, 490, and 520 nm wavelength measurements from which chlorophyll concentration can be derived. The aircraft package contains a LORAN-C unit for aircraft location information, clock, on-board data processor and formatter, digital data storage, packet radio terminal controller, and radio transceiver for data transmission to a ship. The shipboard package contains a transceiver, packet terminal controller, data processing and storage capability, and printer. Both raw data and chlorophyll concentrations are available for real-time analysis.

  14. New online signature acquisition system

    NASA Astrophysics Data System (ADS)

    Oulefki, Adel; Mostefai, Messaoud; Abbadi, Belkacem; Djebrani, Samira; Bouziane, Abderraouf; Chahir, Youssef

    2013-01-01

    We present a nonconstraining and low-cost online signature acquisition system that has been developed to enhance the performances of an existing multimodal biometric authentication system (based initially on both voice and image modalities). A laboratory prototype has been developed and validated for an online signature acquisition.

  15. A Proposed Model of Jazz Theory Knowledge Acquisition

    ERIC Educational Resources Information Center

    Ciorba, Charles R.; Russell, Brian E.

    2014-01-01

    The purpose of this study was to test a hypothesized model that proposes a causal relationship between motivation and academic achievement on the acquisition of jazz theory knowledge. A reliability analysis of the latent variables ranged from 0.92 to 0.94. Confirmatory factor analyses of the motivation (standardized root mean square residual…

  16. Centaur propellant acquisition system study

    NASA Technical Reports Server (NTRS)

    Blatt, M. H.; Walter, M. D.

    1975-01-01

    A study was performed to determine the desirability of replacing the hydrogen peroxide settling system on the Centaur D-1S with a capillary acquisition system. A comprehensive screening was performed to select the most promising capillary device fluid acquisition, thermal conditioning, and fabrication techniques. Refillable start baskets and bypass feed start tanks were selected for detailed design. Critical analysis areas were settling and refilling, start sequence development with an initially dry boost pump, and cooling the fluid delivered to the boost pump in order to provide necessary net position suction head (NPSH). Design drawings were prepared for the start basket and start tank concepts for both LO2 and LH2 tanks. System comparisons indicated that the start baskets using wicking for thermal conditioning, and thermal subcooling for boost pump NPSH, are the most desirable systems for future development.

  17. WRATS Integrated Data Acquisition System

    NASA Technical Reports Server (NTRS)

    Piatak, David J.

    2008-01-01

    The Wing and Rotor Aeroelastic Test System (WRATS) data acquisition system (DAS) is a 64-channel data acquisition display and analysis system specifically designed for use with the WRATS 1/5-scale V-22 tiltrotor model of the Bell Osprey. It is the primary data acquisition system for experimental aeroelastic testing of the WRATS model for the purpose of characterizing the aeromechanical and aeroelastic stability of prototype tiltrotor configurations. The WRATS DAS was also used during aeroelastic testing of Bell Helicopter Textron s Quad-Tiltrotor (QTR) design concept, a test which received international attention. The LabVIEW-based design is portable and capable of powering and conditioning over 64 channels of dynamic data at sampling rates up to 1,000 Hz. The system includes a 60-second circular data archive, an integrated model swashplate excitation system, a moving block damping application for calculation of whirl flutter mode subcritical damping, a loads and safety monitor, a pilot-control console display, data analysis capabilities, and instrumentation calibration functions. Three networked computers running custom-designed LabVIEW software acquire data through National Instruments data acquisition hardware. The aeroelastic model (see figure) was tested with the DAS at two facilities at NASA Langley, the Transonic Dynamics Tunnel (TDT) and the Rotorcraft Hover Test Facility (RHTF). Because of the need for seamless transition between testing at these facilities, DAS is portable. The software is capable of harmonic analysis of periodic time history data, Fast Fourier Transform calculations, power spectral density calculations, and on-line calibration of test instrumentation. DAS has a circular buffer archive to ensure critical data is not lost in event of model failure/incident, as well as a sample-and-hold capability for phase-correct time history data.

  18. Fast Access Data Acquisition System

    SciTech Connect

    Dr. Vladimir Katsman

    1998-03-17

    Our goal in this program is to develop Fast Access Data Acquisition System (FADAS) by combining the flexibility of Multilink's GaAs and InP electronics and electro-optics with an extremely high data rate for the efficient handling and transfer of collider experimental data. This novel solution is based on Multilink's and Los Alamos National Laboratory's (LANL) unique components and technologies for extremely fast data transfer, storage, and processing.

  19. Aerial robotic data acquisition system

    SciTech Connect

    Hofstetter, K.J.; Hayes, D.W.; Pendergast, M.M.; Corban, J.E.

    1993-12-31

    A small, unmanned aerial vehicle (UAV), equipped with sensors for physical and chemical measurements of remote environments, is described. A miniature helicopter airframe is used as a platform for sensor testing and development. The sensor output is integrated with the flight control system for real-time, interactive, data acquisition and analysis. Pre-programmed flight missions will be flown with several sensors to demonstrate the cost-effective surveillance capabilities of this new technology.

  20. DSP based data acquisition system

    NASA Astrophysics Data System (ADS)

    Prasad, Peeyush; Subrahmanya, C. R.

    A new DSP based data acquisition system based on commercial, off-the-shelf available hardware is presented. The board features friendly high speed input and output interfaces, a powerful DSP and hardware offloading of essing to an FPGA. For flexibility of development, a soft realtime linux based kernel popular among embedded developers (uClinux) has been ported on the board.The development environment is fully open source both for the target as well as for host software. The motivation behind creating the system, the development ess and the current status is described. Some results obtained with this system as used in typical applications are also presented.

  1. DEAP-3600 Data Acquisition System

    NASA Astrophysics Data System (ADS)

    Lindner, Thomas

    2015-12-01

    DEAP-3600 is a dark matter experiment using liquid argon to detect Weakly Interacting Massive Particles (WIMPs). The DEAP-3600 Data Acquisition (DAQ) has been built using a combination of commercial and custom electronics, organized using the MIDAS framework. The DAQ system needs to suppress a high rate of background events from 39Ar beta decays. This suppression is implemented using a combination of online firmware and software-based event filtering. We will report on progress commissioning the DAQ system, as well as the development of the web-based user interface.

  2. Data Acquisition for Modular Biometric Monitoring System

    NASA Technical Reports Server (NTRS)

    Chmiel, Alan J. (Inventor); Humphreys, Bradley T. (Inventor); Grodsinsky, Carlos M. (Inventor)

    2014-01-01

    A modular system for acquiring biometric data includes a plurality of data acquisition modules configured to sample biometric data from at least one respective input channel at a data acquisition rate. A representation of the sampled biometric data is stored in memory of each of the plurality of data acquisition modules. A central control system is in communication with each of the plurality of data acquisition modules through a bus. The central control system is configured to collect data asynchronously, via the bus, from the memory of the plurality of data acquisition modules according to a relative fullness of the memory of the plurality of data acquisition modules.

  3. 77 FR 20887 - Proposed Information Collection (National Acquisition Center Customer Response Survey) Activity...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-06

    ... AFFAIRS Proposed Information Collection (National Acquisition Center Customer Response Survey) Activity; Comment Request AGENCY: Office of Acquisition and Logistics, Department of Veterans Affairs. ACTION: Notice. SUMMARY: The Office of Acquisition and Logistics (OAL), Department of Veterans Affairs (VA),...

  4. 12 CFR 225.15 - Procedures for other bank acquisition proposals.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 12 Banks and Banking 3 2010-01-01 2010-01-01 false Procedures for other bank acquisition proposals. 225.15 Section 225.15 Banks and Banking FEDERAL RESERVE SYSTEM (CONTINUED) BOARD OF GOVERNORS OF THE FEDERAL RESERVE SYSTEM BANK HOLDING COMPANIES AND CHANGE IN BANK CONTROL (REGULATION Y)...

  5. The NIFFTE Data Acquisition System

    NASA Astrophysics Data System (ADS)

    Qu, Hai; Niffte Collaboration

    2011-10-01

    The Neutron Induced Fission Fragment Tracking Experiment (NIFFTE) will employ a novel, high granularity, pressurized Time Projection Chamber to measure fission cross-sections of the major actinides to high precision over a wide incident neutron energy range. These results will improve nuclear data accuracy and benefit the fuel cycle in the future. The NIFFTE data acquisition system (DAQ) has been designed and implemented on the prototype TPC. Lessons learned from engineering runs have been incorporated into some design changes that are being implemented before the next run cycle. A fully instrumented sextant of EtherDAQ cards (16 sectors, 496 channels) will be used for the next run cycle. The Maximum Integrated Data Acquisition System (MIDAS) has been chosen and customized to configure and run the experiment. It also meets the requirement for remote control and monitoring of the system. The integration of the MIDAS online database with the persistent PostgreSQL database has been implemented for experiment usage. The detailed design and current status of the DAQ system will be presented.

  6. Monitoring the CMS data acquisition system

    NASA Astrophysics Data System (ADS)

    Bauer, G.; Behrens, U.; Biery, K.; Branson, J.; Cano, E.; Cheung, H.; Ciganek, M.; Cittolin, S.; Coarasa, J. A.; Deldicque, C.; Dusinberre, E.; Erhan, S.; Fortes Rodrigues, F.; Gigi, D.; Glege, F.; Gomez-Reino, R.; Gutleber, J.; Hatton, D.; Laurens, J. F.; Lopez Perez, J. A.; Meijers, F.; Meschi, E.; Meyer, A.; Mommsen, R.; Moser, R.; O'Dell, V.; Oh, A.; Orsini, L. B.; Patras, V.; Paus, C.; Petrucci, A.; Pieri, M.; Racz, A.; Sakulin, H.; Sani, M.; Schieferdecker, P.; Schwick, C.; Shpakov, D.; Simon, S.; Sumorok, K.; Zanetti, M.

    2010-04-01

    The CMS data acquisition system comprises O(20000) interdependent services that need to be monitored in near real-time. The ability to monitor a large number of distributed applications accurately and effectively is of paramount importance for robust operations. Application monitoring entails the collection of a large number of simple and composed values made available by the software components and hardware devices. A key aspect is that detection of deviations from a specified behaviour is supported in a timely manner, which is a prerequisite in order to take corrective actions efficiently. Given the size and time constraints of the CMS data acquisition system, efficient application monitoring is an interesting research problem. We propose an approach that uses the emerging paradigm of Web-service based eventing systems in combination with hierarchical data collection and load balancing. Scalability and efficiency are achieved by a decentralized architecture, splitting up data collections into regions of collections. An implementation following this scheme is deployed as the monitoring infrastructure of the CMS experiment at the Large Hadron Collider. All services in this distributed data acquisition system are providing standard web service interfaces via XML, SOAP and HTTP [15,22]. Continuing on this path we adopted WS-* standards implementing a monitoring system layered on top of the W3C standards stack. We designed a load-balanced publisher/subscriber system with the ability to include high-speed protocols [10,12] for efficient data transmission [11,13,14] and serving data in multiple data formats.

  7. Smart data acquisition system for utilities metering

    NASA Astrophysics Data System (ADS)

    Ileana, I.; Risteiu, M.; Tulbure, A.; Rusu, M.

    2009-01-01

    The paper approaches the task of automatically reading and recognition of registered data on the utility meters of the users and is a part of a more complex project of our team concerning the remote data acquisition from industrial processes. A huge amount of utility meters in our country is of mechanical type without remote acquiring facilities and as an intermediate solution we propose an intelligent optical acquisition system which will store the read values in desktop and mobile devices. The main requirements of such a system are: portability, data reading accuracy, fast processing and energy independence. The paper analyses several solutions (including Artificial Neural Networks approach) tested by our team and present the experimental results and our conclusions.

  8. 78 FR 28790 - Defense Federal Acquisition Regulation Supplement; Forward Pricing Rate Proposal Adequacy...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-16

    ... Regulation Supplement; Forward Pricing Rate Proposal Adequacy Checklist (DFARS Case 2012-D035) AGENCY... is proposing to amend the Defense Federal Acquisition Regulation Supplement (DFARS) to provide... new information collection requirement concerning Defense Federal Acquisition Regulation...

  9. INO prototype detector and data acquisition system

    NASA Astrophysics Data System (ADS)

    Behere, Anita; Bhatia, M. S.; Chandratre, V. B.; Datar, V. M.; Mukhopadhyay, P. K.; Jena, Satyajit; Viyogi, Y. P.; Bhattacharya, Sudeb; Saha, Satyajit; Bhide, Sarika; Kalmani, S. D.; Mondal, N. K.; Nagaraj, P.; Nagesh, B. K.; Rao, Shobha K.; Reddy, L. V.; Saraf, M.; Satyanarayana, B.; Shinde, R. R.; Upadhya, S. S.; Verma, P.; Biswas, Saikat; Chattopadhyay, Subhasish; Sarma, P. R.

    2009-05-01

    India-based Neutrino Observatory (INO) collaboration is proposing to build a 50 kton magnetised iron calorimetric (ICAL) detector in an underground laboratory to be located in South India. Glass resistive plate chambers (RPCs) of about 2 m×2 m in size will be used as active elements for the ICAL detector. As a first step towards building the ICAL detector, a 35 ton prototype of the same is being set up over ground to track cosmic muons. Design and construction details of the prototype detector and its data acquisition system will be discussed. Some of the preliminary results from the detector stack will also be highlighted.

  10. Multiple channel data acquisition system

    DOEpatents

    Crawley, H. Bert; Rosenberg, Eli I.; Meyer, W. Thomas; Gorbics, Mark S.; Thomas, William D.; McKay, Roy L.; Homer, Jr., John F.

    1990-05-22

    A multiple channel data acquisition system for the transfer of large amounts of data from a multiplicity of data channels has a plurality of modules which operate in parallel to convert analog signals to digital data and transfer that data to a communications host via a FASTBUS. Each module has a plurality of submodules which include a front end buffer (FEB) connected to input circuitry having an analog to digital converter with cache memory for each of a plurality of channels. The submodules are interfaced with the FASTBUS via a FASTBUS coupler which controls a module bus and a module memory. The system is triggered to effect rapid parallel data samplings which are stored to the cache memories. The cache memories are uploaded to the FEBs during which zero suppression occurs. The data in the FEBs is reformatted and compressed by a local processor during transfer to the module memory. The FASTBUS coupler is used by the communications host to upload the compressed and formatted data from the module memory. The local processor executes programs which are downloaded to the module memory through the FASTBUS coupler.

  11. Multiple channel data acquisition system

    DOEpatents

    Crawley, H.B.; Rosenberg, E.I.; Meyer, W.T.; Gorbics, M.S.; Thomas, W.D.; McKay, R.L.; Homer, J.F. Jr.

    1990-05-22

    A multiple channel data acquisition system for the transfer of large amounts of data from a multiplicity of data channels has a plurality of modules which operate in parallel to convert analog signals to digital data and transfer that data to a communications host via a FASTBUS. Each module has a plurality of submodules which include a front end buffer (FEB) connected to input circuitry having an analog to digital converter with cache memory for each of a plurality of channels. The submodules are interfaced with the FASTBUS via a FASTBUS coupler which controls a module bus and a module memory. The system is triggered to effect rapid parallel data samplings which are stored to the cache memories. The cache memories are uploaded to the FEBs during which zero suppression occurs. The data in the FEBs is reformatted and compressed by a local processor during transfer to the module memory. The FASTBUS coupler is used by the communications host to upload the compressed and formatted data from the module memory. The local processor executes programs which are downloaded to the module memory through the FASTBUS coupler. 25 figs.

  12. Miniature infrared data acquisition and telemetry system

    NASA Technical Reports Server (NTRS)

    Stokes, J. H.; Ward, S. M.

    1985-01-01

    The Miniature Infrared Data Acquisition and Telemetry (MIRDAT) Phase 1 study was performed to determine the technical and commercial feasibility of producing a miniaturized electro-optical telemetry system. This system acquires and transmits experimental data from aircraft scale models for realtime monitoring in wind tunnels. During the Phase 1 study, miniature prototype MIRDAT telemetry devices were constructed, successfully tested in the laboratory and delivered to the user for wind tunnel testing. A search was conducted for commercially available components and advanced hybrid techniques to further miniaturize the system during Phase 2 development. A design specification was generated from laboratory testing, user requirements and discussions with component manufacturers. Finally, a preliminary design of the proposed MIRDAT system was documented for Phase 2 development.

  13. Proposal for electrical insulation of the electromyographic signal acquisition module.

    PubMed

    Guirro, R R J; Forti, F; Bigaton, D R

    2006-11-01

    The aim was to analyze the inteiference in a signal acquisition module (SAM) EMG1000 (Lynx--10(9) Ohms, 16 bits and range of +/-1 V), with active surface electrode (Lynx--gain 20, IRMC > 100 dB) placed over the belly of the brachial biceps of 18 healthy, sedentary volunteers, without osteomyoarticular pathologies in the upper members. Initially, the intrinsic noise of the SAM was assessed by means of a short-circuit between the simple differential and the reference electrodes, and a second stage consisted of collecting the electromyographic signal at rest of the brachial biceps muscle in 4 different procedures. (1) SAM and desktop in the electrical network (EN); (2) SAM in the battery and desktop in the EN; (3) SAM in the EN and desktop connected to the fibre optic (FO) and (4) SAM in the battery and desktop in the FO. The rest signal was collected for 10 seconds and repeated 3 times. RMS and median frequency were assessed with the software Matlab. Under conditions 1, 2 and 3 there was great interference in the signal by EN. Whereas under condition 4, the interference was eliminated. According to the results, the electrical insulation proposed was efficient in eliminating the noise, guaranteeing the quality of the acquired signal.

  14. TFTR diagnostic control and data acquisition system

    NASA Astrophysics Data System (ADS)

    Sauthoff, N. R.; Daniels, R. E.

    1985-05-01

    General computerized control and data-handling support for TFTR diagnostics is presented within the context of the Central Instrumentation, Control and Data Acquisition (CICADA) System. Procedures, hardware, the interactive man-machine interface, event-driven task scheduling, system-wide arming and data acquisition, and a hierarchical data base of raw data and results are described. Similarities in data structures involved in control, monitoring, and data acquisition afford a simplification of the system functions, based on ``groups'' of devices. Emphases and optimizations appropriate for fusion diagnostic system designs are provided. An off-line data reduction computer system is under development.

  15. TFTR diagnostic control and data acquisition system

    SciTech Connect

    Sauthoff, N.R.; Daniels, R.E.; PPL Computer Division

    1985-05-01

    General computerized control and data-handling support for TFTR diagnostics is presented within the context of the Central Instrumentation, Control and Data Acquisition (CICADA) System. Procedures, hardware, the interactive man--machine interface, event-driven task scheduling, system-wide arming and data acquisition, and a hierarchical data base of raw data and results are described. Similarities in data structures involved in control, monitoring, and data acquisition afford a simplification of the system functions, based on ''groups'' of devices. Emphases and optimizations appropriate for fusion diagnostic system designs are provided. An off-line data reduction computer system is under development.

  16. 48 CFR 1401.7001-4 - Acquisition performance measurement systems.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Acquisition performance measurement systems. 1401.7001-4 Section 1401.7001-4 Federal Acquisition Regulations System DEPARTMENT OF THE... Acquisition performance measurement systems. (a) The acquisition performance measurement system is a...

  17. 48 CFR 1401.7001-4 - Acquisition performance measurement systems.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 5 2011-10-01 2011-10-01 false Acquisition performance measurement systems. 1401.7001-4 Section 1401.7001-4 Federal Acquisition Regulations System DEPARTMENT OF THE... Acquisition performance measurement systems. (a) The acquisition performance measurement system is a...

  18. 48 CFR 1401.7001-4 - Acquisition performance measurement systems.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 5 2014-10-01 2014-10-01 false Acquisition performance measurement systems. 1401.7001-4 Section 1401.7001-4 Federal Acquisition Regulations System DEPARTMENT OF THE... Acquisition performance measurement systems. (a) The acquisition performance measurement system is a...

  19. Thermal (Silicon Diode) Data Acquisition Systems

    NASA Technical Reports Server (NTRS)

    Wright, Ernest; Kegley, Jeff

    2008-01-01

    Marshall Space Flight Center s X-ray Cryogenic Facility (XRCF) has been performing cryogenic testing to 20 Kelvin since 1999. Two configurations for acquiring data from silicon diode temperature sensors have been implemented at the facility. The facility's environment is recorded via a data acquisition system capable of reading up to 60 silicon diodes. Test article temperature is recorded by a second data acquisition system capable of reading 150+ silicon diodes. The specifications and architecture of both systems will be presented.

  20. Thermal (Silicon Diode) Data Acquisition System

    NASA Technical Reports Server (NTRS)

    Kegley, Jeffrey

    2008-01-01

    Marshall Space Flight Center's X-ray Calibration Facility (XRCF) has been performing cryogenic testing to 20 Kelvin since 1999. Two configurations for acquiring data from silicon diode temperature sensors have been implemented at the facility. The facility's environment is recorded via a data acquisition system capable of reading up to 60 silicon diodes. Test article temperature is recorded by a second data acquisition system capable of reading 150+ silicon diodes. The specifications and architecture of both systems will be presented.

  1. Offline synchronization of data acquisition systems using system identification

    NASA Astrophysics Data System (ADS)

    Maes, K.; Reynders, E.; Rezayat, A.; Roeck, G. De; Lombaert, G.

    2016-10-01

    This paper presents a technique for offline time synchronization of data acquisition systems. The technique can be applied when real-time synchronization of data acquisition systems is impossible or not sufficiently accurate. It allows for accurate synchronization based on the acquired dynamic response of the structure only, without requiring a common response or the use of a trigger signal. The synchronization is performed using the results obtained from system identification, and assumes linear dynamic behavior of the structure and proportional damping of the structural modes. A demonstration for a laboratory experiment on a cantilever steel beam shows that the proposed methodology can be used for accurate time synchronization, resulting in a significant improvement of the accuracy of the identified mode shapes.

  2. The USB-based portable data acquisition system for AR

    NASA Astrophysics Data System (ADS)

    Zhu, Lei; Yan, Dayuan; Dong, Taian; Zhang, Hao; Liu, Guangting; Zheng, Chunliang

    2011-11-01

    Rotary position sensors are widely used in many applications that require precise shaft unlimited rotation: including control systems, robotics and AR (Augmented Reality) systems. However, traditional data acquisition system is often a PC-based (Personal Computer-based) one with complex structures and complicated electrical connections, which means that the system has limited application for its size as well as its poor portability. That is a main drawback, especially for AR system in which the user is supposed to walk freely. In this paper, a novel portable data acquisition system (PDAS) based on USB interface technology with a succinct hardware structure is proposed. Implemented on an 8051-based microcontroller AT89C5131, the proposed system can receive signal from optical encoder, decode the signal and transfer the data to the computer through USB interface. The experimental results show that this system can provide the possibility to realize portable and improve performance of AR, which demonstrate the efficiency of the proposed system.

  3. Proposal for Research and Development: Vertexing, Tracking, and Data Acquisition for the Bottom Collider Detector

    SciTech Connect

    Castro, H.; Gomez, B.; Rivera, F.; Sanabria, J.-C.; Yager, P.; Barsotti, E.; Bowden, M.; Childress, S.; Lebrun, P.; Morfin, J.; Roberts, L.A.; /Fermilab /Florida U. /Houston U. /IIT /Iowa U. /Northeastern U. /Northern Illinois U. /Ohio State U. /Oklahoma U. /Pennsylvania U.

    1989-01-01

    The authors propose a program of research and development into the detector systems needed for a B-physics experiment at the Fermilab p-{bar p} Collider. The initial emphasis is on the critical issues of vertexting, tracking, and data acquisition in the high-multiplicity, high-rate collider environment. R and D for the particle-identification systems (RICH counters, TRD's, and EM calorimeter) will be covered in a subsequent proposal. To help focus their efforts in a timely manner, they propose the first phase of the R and D should culminate in a system test at the C0 collider intersect during the 1990-1991 run: a small fraction of the eventual vertex detector would be used to demonstrate that secondary-decay vertices can be found at a hadron collider. The proposed budget for the r and D program is $800k in 1989, $1.5M in 1990, and $1.6M in 1991.

  4. Strategic petroleum reserve data acquisition system

    SciTech Connect

    Merillat, P D; Bauer, A G

    1980-10-01

    The Strategic Petroleum Reserve Data Acquisition System is a general purpose, digital data acquisition system designed for field use in the DOE's Strategic Petroleum Reserve testing and monitoring program. The system is computer driven, under the control of an operator. The system is designed to allow the operator to perform pre-test system configuration; test monitoring and control; and post test analysis. This document is a system description and an operator users manual. Topics covered include: configuration and running on-line tests, software documentation, and maintenance programming information.

  5. Data acquisition at a residential photovoltaic system

    NASA Astrophysics Data System (ADS)

    McIntyre, J. M.; Miller, G. N.

    A description is presented of the techniques employed for data collection and analysis in the study of a small residential photovoltaic (PV) system. A model home of approximately 139 sq m incorporated a PV array on the south-facing roof. The PV system was designed to interface directly to the local utility system through an inverter which converted the direct current output of the array to 60 Hz alternating current. Electric power could flow either from the utility lines into the house or vice versa. The solar panel consisted of 120 modules installed in a 5 x 24 array. Attention is given to initial problems, the conduction of a systems analysis, the data collection method, the equipment used in the data acquisition system, aspects of data collection, the encountered problems, and the results of the data acquisition project. It was found that the data acquisition system employed was effective for computer-compatible data collection.

  6. Measurement and Controls Data Acquisition System

    NASA Technical Reports Server (NTRS)

    Hall, Rick; Daniel, Alice; Batts, Frank E., Sr.

    2006-01-01

    Measurement and Controls Data Acquisition System (MCDAS) is an application program that integrates the functions of two stand-alone programs: one for acquisition of data, the other for controls. MCDAS facilitates and improves testing of complex engineering systems by helping to perform calibration and setup of test systems and acquisition, dissemination, and processing of data. Features of MCDAS include an intuitive, user-friendly graphical user interface, a capability for acquiring data at rates greater than previously possible, cooperation between the data-acquisition software subsystem and alarm-checking and analytical components of the control software subsystem, and a capability for dissemination of data through fiber optics and virtual and wide-area networks, including networks that contain hand-held display units. The integration of the data acquisition and control software offers a safety advantage by making alarm information available to the control software in a more timely manner. By enabling the use of hand-held devices, MCDAS reduces the time spent by technicians asking for screen updates to determine effects of setup actions. Previously recorded data can be processed without interruption to current acquisition of data. Analysts can continue to view test parameters while test-data files are being generated.

  7. DAQMAN - A flexible configurable data acquisition system

    SciTech Connect

    Sivertz, Michael; Larry Hoff, Seth Nemesure

    2012-08-01

    DAQMAN is a flexible configurable interface that allows the user to build and operate a VME-based data acquisition system on a Linux workstation. It consists of two parts: a Java-based Graphical User Interface to configure the system, and a C-based utility that reads out the data and creates the output ASCII data file, with two levels of diagnostic tools. The data acquisition system requires a CAEN CONET-VME Bridge to communicate between the hardware in the VME crate and the Linux workstation. Data acquisition modules, such as ADCs, TDC, Scalers, can be loaded into the system, or removed easily. The GUI allows users to activate modules, and channels within modules by clicking on icons. Running configurations are stored; data are collected and can be viewed either as raw numbers, or by charts and histograms that update as the data are accumulated. Data files are written to disk in ASCII format, with a date and time stamp.

  8. Knowledge acquisition for autonomous systems

    NASA Technical Reports Server (NTRS)

    Lum, Henry; Heer, Ewald

    1988-01-01

    Knowledge-based capabilities for autonomous aerospace systems, such as the NASA Space Station, must encompass conflict-resolution functions comparable to those of human operators, with all elements of the system working toward system goals in a concurrent, asynchronous-but-coordinated fashion. Knowledge extracted from a design database will support robotic systems by furnishing geometric, structural, and causal descriptions required for repair, disassembly, and assembly. The factual knowledge for these databases will be obtained from a master database through a technical management information system, and it will in many cases have to be augmented by domain-specific heuristic knowledge acquired from domain experts.

  9. Microprocessor-Based Laboratory Data Acquisition Systems.

    ERIC Educational Resources Information Center

    Woodard, F. E.; And Others

    1981-01-01

    Focuses on attributes of microcomputer systems which affect their usefulness in a laboratory environment. In addition to presenting general concepts, comments are made regarding the implementation of these concepts using a microprocessor-based data acquisition system developed at the University of North Carolina. (CO)

  10. Draft Automatic Data Acquisition System Plan

    SciTech Connect

    Not Available

    1987-04-01

    This Automatic Data Acquisition System (ADAS) Plan has been prepared in support of the requirement for detailed site characterization of the Deaf Smith County candidate repository site in salt, and describes the data acquisition system which will be used for unattended data collection from the geotechnical instrumentation installed at the site. Section 1.1 discusses the programmatic background to the plan, Section 1.2 presents the scope and purpose of the plan, and the organization of the document is given in Section 1.3. 31 refs., 34 figs., 8 tabs.

  11. On Shaft Data Acquisition System (OSDAS)

    NASA Technical Reports Server (NTRS)

    Pedings, Marc; DeHart, Shawn; Formby, Jason; Naumann, Charles

    2012-01-01

    On Shaft Data Acquisition System (OSDAS) is a rugged, compact, multiple-channel data acquisition computer system that is designed to record data from instrumentation while operating under extreme rotational centrifugal or gravitational acceleration forces. This system, which was developed for the Heritage Fuel Air Turbine Test (HFATT) program, addresses the problem of recording multiple channels of high-sample-rate data on most any rotating test article by mounting the entire acquisition computer onboard with the turbine test article. With the limited availability of slip ring wires for power and communication, OSDAS utilizes its own resources to provide independent power and amplification for each instrument. Since OSDAS utilizes standard PC technology as well as shared code interfaces with the next-generation, real-time health monitoring system (SPARTAA Scalable Parallel Architecture for Real Time Analysis and Acquisition), this system could be expanded beyond its current capabilities, such as providing advanced health monitoring capabilities for the test article. High-conductor-count slip rings are expensive to purchase and maintain, yet only provide a limited number of conductors for routing instrumentation off the article and to a stationary data acquisition system. In addition to being limited to a small number of instruments, slip rings are prone to wear quickly, and introduce noise and other undesirable characteristics to the signal data. This led to the development of a system capable of recording high-density instrumentation, at high sample rates, on the test article itself, all while under extreme rotational stress. OSDAS is a fully functional PC-based system with 48 channels of 24-bit, high-sample-rate input channels, phase synchronized, with an onboard storage capacity of over 1/2-terabyte of solid-state storage. This recording system takes a novel approach to the problem of recording multiple channels of instrumentation, integrated with the test

  12. Magnetic Field Response Measurement Acquisition System

    NASA Technical Reports Server (NTRS)

    Woodard, Stanley E.; Taylor, Bryant D.; Shams, Qamar A.; Fox, Robert L.

    2005-01-01

    A measurement acquisition method that alleviates many shortcomings of traditional measurement systems is presented in this paper. The shortcomings are a finite number of measurement channels, weight penalty associated with measurements, electrical arcing, wire degradations due to wear or chemical decay and the logistics needed to add new sensors. The key to this method is the use of sensors designed as passive inductor-capacitor circuits that produce magnetic field responses. The response attributes correspond to states of physical properties for which the sensors measure. A radio frequency antenna produces a time-varying magnetic field used to power the sensor and receive the magnetic field response of the sensor. An interrogation system for discerning changes in the sensor response is presented herein. Multiple sensors can be interrogated using this method. The method eliminates the need for a data acquisition channel dedicated to each sensor. Methods of developing magnetic field response sensors and the influence of key parameters on measurement acquisition are discussed.

  13. Implementation of Remote Acquisition and Storage System

    NASA Technical Reports Server (NTRS)

    Hess, Jason R.

    1995-01-01

    The existing system for gathering and processing acoustical test data had several shortcomings and limitations in the areas of microphone array size, sampling rate, and background noise. A new Remote Acquisition and Storage System (RASS) is being designed for applications not suited for the existing acquisition system. One of the first tasks in the design of the RASS was to redesign the microprocessor card of the existing system to include RS-232 serial ports to accept communications through the radio modem used in the RF link. Cost and parts availability comparisons were made between the newly designed board and commercially available models, and a commercially made model was selected. This model was tested for basic I/0 operations. The prototype of the RF telemetry system was set up and tested. Plans are now being developed for integrating the RF telemetry system with the other RASS subsystems.

  14. Cardiopulmonary data-acquisition system

    NASA Technical Reports Server (NTRS)

    Crosier, W. G.; Reed, R. A.

    1981-01-01

    Computerized system controls and monitors bicycle and treadmill cardiovascular stress tests. It acquires and reduces stress data and displays heart rate, blood pressure, workload, respiratory rate, exhaled-gas composition, and other variables. Data are printed on hard-copy terminal every 30 seconds for quick operator response to patient. Ergometer workload is controlled in real time according to experimental protocol. Collected data are stored directly on tape in analog form and on floppy disks in digital form for later processing.

  15. NASA Data Acquisitions System (NDAS) Software Architecture

    NASA Technical Reports Server (NTRS)

    Davis, Dawn; Duncan, Michael; Franzl, Richard; Holladay, Wendy; Marshall, Peggi; Morris, Jon; Turowski, Mark

    2012-01-01

    The NDAS Software Project is for the development of common low speed data acquisition system software to support NASA's rocket propulsion testing facilities at John C. Stennis Space Center (SSC), White Sands Test Facility (WSTF), Plum Brook Station (PBS), and Marshall Space Flight Center (MSFC).

  16. Multitasking in a data acquisition system

    SciTech Connect

    Larsen, J.E.

    1980-01-01

    Microprocessors and microcomputers have been employed widely in data acquisition applications due to low cost and the ease of adapting the microcomputer to changing or altered requirements. Multitasking offers ways of getting more performance from a microcomputer and also a means of designing a system which by its nature is easily changed to meet new requirements. The term multitasking is used to include definitions of multitasking and multiprogramming: multitasking-performing various related functions of the same job, e.g. data acquisition and data logging (recording); multiprogramming-performing possibly unrelated jobs concurrently.

  17. Current position on software for the automatic data acquisition system

    SciTech Connect

    Not Available

    1988-01-01

    This report describes the current concepts for software to control the operation of the Automatic Data Acquisition System (ADAS) proposed for the Deaf Smith County, Texas, Exploratory Shaft Facility (ESF). The purpose of this report is to provide conceptual details of how the ADAS software will execute the data acquisition function, and how the software will make collected information available to the test personnel, the Data Management Group (DMG), and other authorized users. It is not intended that this report describe all of the ADAS functions in exact detail, but the concepts included herein will form the basis for the formal ADAS functional requirements definition document. 5 refs., 14 figs.

  18. Incorporating Ethical Consumption into Electronic Device Acquisition: A Proposal

    ERIC Educational Resources Information Center

    Poggiali, Jennifer

    2016-01-01

    This essay proposes that librarians practice ethical consumption when purchasing electronic devices. Though librarians have long been engaged with environmentalism and social justice, few have suggested that such issues as e-waste and sweatshop labor should impact our decisions to acquire e-readers, tablets, and other electronics. This article…

  19. Performance confirmation data acquisition system

    SciTech Connect

    McAffee, D.A.; Raczka, N.T.

    1997-12-31

    As part of the Viability Assessment (VA) work, this QAP-3-9 document presents and evaluates a comprehensive set of viable concepts for collecting Performance Confirmation (PC) related data. The concepts include: monitoring subsurface repository air temperatures, humidity levels and gaseous emissions via the subsurface ventilation systems, and monitoring the repository geo-technical parameters and rock mass from bore-holes located along the perimeter main drifts and throughout a series of human-rated Observation Drifts to be located in a plane 25 meters above the plane of the emplacement drifts. A key element of this document is the development and analysis of a purposed multi-purpose Remote Inspection Gantry that would provide direct, real-time visual, thermal, and radiological monitoring of conditions inside operational emplacement drifts and close-up observations of in-situ Waste Packages. Preliminary finite-element analyses are presented that indicate the technological feasibility of operating an inspection gantry inside the operational emplacement drifts for short inspection missions lasting 2--3 hours. Overall reliability, availability, and maintainability of the PC data collection concepts are discussed. Preliminary concepts for PC data collection network are also provided.

  20. Magnetic Field Response Measurement Acquisition System

    NASA Technical Reports Server (NTRS)

    Woodard, Stanley E.; Taylor,Bryant D.; Shams, Qamar A.; Fox, Robert L.

    2007-01-01

    This paper presents a measurement acquisition method that alleviates many shortcomings of traditional measurement systems. The shortcomings are a finite number of measurement channels, weight penalty associated with measurements, electrical arcing, wire degradations due to wear or chemical decay and the logistics needed to add new sensors. Wire degradation has resulted in aircraft fatalities and critical space launches being delayed. The key to this method is the use of sensors designed as passive inductor-capacitor circuits that produce magnetic field responses. The response attributes correspond to states of physical properties for which the sensors measure. Power is wirelessly provided to the sensing element by using Faraday induction. A radio frequency antenna produces a time-varying magnetic field used to power the sensor and receive the magnetic field response of the sensor. An interrogation system for discerning changes in the sensor response frequency, resistance and amplitude has been developed and is presented herein. Multiple sensors can be interrogated using this method. The method eliminates the need for a data acquisition channel dedicated to each sensor. The method does not require the sensors to be near the acquisition hardware. Methods of developing magnetic field response sensors and the influence of key parameters on measurement acquisition are discussed. Examples of magnetic field response sensors and the respective measurement characterizations are presented. Implementation of this method on an aerospace system is discussed.

  1. Image acquisition system for a hospital enterprise

    NASA Astrophysics Data System (ADS)

    Moore, Stephen M.; Beecher, David E.

    1998-07-01

    Hospital enterprises are being created through mergers and acquisitions of existing hospitals. One area of interest in the PACS literature has been the integration of information systems and imaging systems. Hospital enterprises with multiple information and imaging systems provide new challenges to the integration task. This paper describes the requirements at the BJC Health System and a testbed system that is designed to acquire images from a number of different modalities and hospitals. This testbed system is integrated with Project Spectrum at BJC which is designed to provide a centralized clinical repository and a single desktop application for physician review of the patient chart (text, lab values, images).

  2. The CDMS II data acquisition system

    SciTech Connect

    Bauer, D.A.; Burke, S.; Cooley, J.; Crisler, M.; Cushman, P.; DeJongh, F.; Duong, L.; Ferril, R.; Golwala, S.R.; Hall, J.; Holmgren, D.; /Fermilab /Texas A-M

    2011-01-01

    The Data Acquisition System for the CDMS II dark matter experiment was designed and built when the experiment moved to its new underground installation at the Soudan Lab. The combination of remote operation and increased data load necessitated a completely new design. Elements of the original LabView system remained as stand-alone diagnostic programs, but the main data processing moved to a VME-based system with custom electronics for signal conditioning, trigger formation and buffering. The data rate was increased 100-fold and the automated cryogenic system was linked to the data acquisition. A modular server framework with associated user interfaces was implemented in Java to allow control and monitoring of the entire experiment remotely.

  3. Acquisition systems for heat transfer measurement

    SciTech Connect

    De Witt, R.J.

    1983-01-01

    Practical heat transfer data acquisition systems are normally characterized by the need for high-resolution, low-drift, low-speed recording devices. Analog devices such as strip chart or circular recorders and FM analog magnetic tape have excellent resolution and work well when data will be presented in temperature versus time format only and need not be processed further. Digital systems are more complex and require an understanding of the following components: digitizing devices, interface bus types, processor requirements, and software design. This paper discusses all the above components of analog and digital data acquisition, as they are used in current practice. Additional information on thermocouple system analysis will aid the user in developing accurate heat transfer measuring systems.

  4. EBT data acquisition system control facilities

    SciTech Connect

    Burris, R.D.

    1982-01-01

    A multicomputer, multitask data acquisition and analysis system has been implemented for the Elmo Bumpy Torus (EBT) experiment in controlled fusion. This document describes the control features of the computer system, including the provision of time and date to all computers, the control of data file names, the maintenance of critical data bases, and the control of various tasks. The physical control of the experiment itself, through the provision of voltages or the sensing of conditions, is not described in this document.

  5. TARA control, data acquisition and analysis system

    SciTech Connect

    Gaudreau, M.P.J.; Sullivan, J.D.; Fredian, T.W.; Karcher, C.A.; Sevillano, E.; Stillerman, J.; Thomas, P.

    1983-12-01

    The MIT tandem mirror (TARA) control, data acquisition and analysis system consists of two major parts: (1) a Gould 584 industrial programmable controller (PC) to control engineering functions; and (2) a VAX 11/750 based data acquisition and analysis system for physics analysis. The PC is designed for use in harsh industrial environments and has proven to be a reliable and cost-effective means for automated control. The PC configuration is dedicated to control tasks on the TARA magnet, vacuum, RF, neutral beam, diagnostics, and utility systems. The data transfer functions are used to download system operating parameters from menu selectable tables. Real time status reports are provided to video terminals and as blocks of data to the host computer for storage. The data acquisition and analysis system for TARA was designed to provide high throughput and ready access to data from earlier runs. The adopted design uses pre-existing software packages in a system which is simple, coherent, fast, and which requires a minimum of new software development. The computer configuration is a VAX 11/750 running VMS with 124 M byte massbus disk and 1.4 G byte unibus disk subsystem.

  6. Data Acquisition and Control Systems Laboratory

    NASA Technical Reports Server (NTRS)

    Holland, Randy; Jensen, Scott; Burrel, Terrence; Spooner, Richard

    2002-01-01

    The Data Acquisition and Control Systems (DACS) Laboratory is a facility at Stennis Space Center that provides an off test-stand capability to develop data-acquisition and control systems for rocket-engine test stands. It is also used to train new employees in state-of-the-art systems, and provides a controlled environment for troubleshooting existing systems, as well as the ability to evaluate the application of new technologies and process improvements. With the SSC propulsion testing schedules, without the DACS Laboratory, it would have been necessary to perform most of the development work on actual test systems, thereby subjecting both the rocket-engine testing and development programs to substantial interference in the form of delays, restrictions on modifications of equipment, and potentially compromising software configuration control. The DACS Laboratory contains a versatile assortment of computer hardware and software, digital and analog electronic control and data-acquisition equipment, and standard electronic bench test equipment and tools. Recently completed Control System development and software verification projects include support to the joint NASA/Air Force Integrated Powerhead Demonstration (IPD) LOX & LH2 PreBurner and Turbopump ground testing programs. In other recent activities, the DACS Laboratory equipment and expertise have supported the off-stand operation of high-pressure control valves to correct valve leak problems prior to installation on the test stand. Future plans include expanding the Laboratory's capabilities to provide cryogenic control valve characterization prior to installation, thereby reducing test stand activation time.

  7. Optoelectronic date acquisition system based on FPGA

    NASA Astrophysics Data System (ADS)

    Li, Xin; Liu, Chunyang; Song, De; Tong, Zhiguo; Liu, Xiangqing

    2015-11-01

    An optoelectronic date acquisition system is designed based on FPGA. FPGA chip that is EP1C3T144C8 of Cyclone devices from Altera corporation is used as the centre of logic control, XTP2046 chip is used as A/D converter, host computer that communicates with the date acquisition system through RS-232 serial communication interface are used as display device and photo resistance is used as photo sensor. We use Verilog HDL to write logic control code about FPGA. It is proved that timing sequence is correct through the simulation of ModelSim. Test results indicate that this system meets the design requirement, has fast response and stable operation by actual hardware circuit test.

  8. Isothermal thermogravimetric data acquisition analysis system

    NASA Technical Reports Server (NTRS)

    Cooper, Kenneth, Jr.

    1991-01-01

    The description of an Isothermal Thermogravimetric Analysis (TGA) Data Acquisition System is presented. The system consists of software and hardware to perform a wide variety of TGA experiments. The software is written in ANSI C using Borland's Turbo C++. The hardware consists of a 486/25 MHz machine with a Capital Equipment Corp. IEEE488 interface card. The interface is to a Hewlett Packard 3497A data acquisition system using two analog input cards and a digital actuator card. The system provides for 16 TGA rigs with weight and temperature measurements from each rig. Data collection is conducted in three phases. Acquisition is done at a rapid rate during initial startup, at a slower rate during extended data collection periods, and finally at a fast rate during shutdown. Parameters controlling the rate and duration of each phase are user programmable. Furnace control (raising and lowering) is also programmable. Provision is made for automatic restart in the event of power failure or other abnormal terminations. Initial trial runs were conducted to show system stability.

  9. 48 CFR 52.216-30 - Time-and-Materials/Labor-Hour Proposal Requirements-Non-Commercial Item Acquisition without...

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...-Hour Proposal Requirements-Non-Commercial Item Acquisition without Adequate Price Competition. 52.216... Time-and-Materials/Labor-Hour Proposal Requirements—Non-Commercial Item Acquisition without Adequate.../Labor-Hour Proposal Requirements—Non-Commercial Item Acquisition Without Adequate Price Competition...

  10. MPS (Multiparticle Spectrometer) data acquisition software system

    SciTech Connect

    Saulys, A.C.; Etkin, A.; Foley, K.J.; Hackenburg, R.W.; Longacre, R.S.; Love, W.A.; Morris, T.W.; Platner, E.D.; Lindenbaum, S.J.; Chan, C.S.

    1989-04-04

    A description of the software for a FASTBUS based data acquisition system in use at the Brookhaven National Laboratory Multiparticle Spectrometer is presented. Data reading and formatting is done by the SLAC Scanner Processors (SSP's) resident in the FASTBUS system. A multiprocess software system on VAX computers is used to communicate with the SSP's, record the data, and monitor on-line the progress of high energy and heavy ion experiments. The structure and the performance of this system are discussed. 4 refs., 1 fig.

  11. DAQMAN - A flexible configurable data acquisition system

    2012-08-01

    DAQMAN is a flexible configurable interface that allows the user to build and operate a VME-based data acquisition system on a Linux workstation. It consists of two parts: a Java-based Graphical User Interface to configure the system, and a C-based utility that reads out the data and creates the output ASCII data file, with two levels of diagnostic tools. The data acquisition system requires a CAEN CONET-VME Bridge to communicate between the hardware in themore » VME crate and the Linux workstation. Data acquisition modules, such as ADCs, TDC, Scalers, can be loaded into the system, or removed easily. The GUI allows users to activate modules, and channels within modules by clicking on icons. Running configurations are stored; data are collected and can be viewed either as raw numbers, or by charts and histograms that update as the data are accumulated. Data files are written to disk in ASCII format, with a date and time stamp.« less

  12. Wavelets for full reconfigurable ECG acquisition system

    NASA Astrophysics Data System (ADS)

    Morales, D. P.; García, A.; Castillo, E.; Meyer-Baese, U.; Palma, A. J.

    2011-06-01

    This paper presents the use of wavelet cores for a full reconfigurable electrocardiogram signal (ECG) acquisition system. The system is compound by two reconfigurable devices, a FPGA and a FPAA. The FPAA is in charge of the ECG signal acquisition, since this device is a versatile and reconfigurable analog front-end for biosignals. The FPGA is in charge of FPAA configuration, digital signal processing and information extraction such as heart beat rate and others. Wavelet analysis has become a powerful tool for ECG signal processing since it perfectly fits ECG signal shape. The use of these cores has been integrated in the LabVIEW FPGA module development tool that makes possible to employ VHDL cores within the usual LabVIEW graphical programming environment, thus freeing the designer from tedious and time consuming design of communication interfaces. This enables rapid test and graphical representation of results.

  13. War-gaming application for future space systems acquisition

    NASA Astrophysics Data System (ADS)

    Nguyen, Tien M.; Guillen, Andy T.

    2016-05-01

    Recently the U.S. Department of Defense (DOD) released the Defense Innovation Initiative (DII) [1] to focus DOD on five key aspects; Aspect #1: Recruit talented and innovative people, Aspect #2: Reinvigorate war-gaming, Aspect #3: Initiate long-range research and development programs, Aspect #4: Make DOD practices more innovative, and Aspect #5: Advance technology and new operational concepts. Per DII instruction, this paper concentrates on Aspect #2 and Aspect #4 by reinvigorating the war-gaming effort with a focus on an innovative approach for developing the optimum Program and Technical Baselines (PTBs) and their corresponding optimum acquisition strategies for acquiring future space systems. The paper describes a unified approach for applying the war-gaming concept for future DOD acquisition of space systems. The proposed approach includes a Unified Game-based Acquisition Framework (UGAF) and an Advanced Game-Based Mathematical Framework (AGMF) using Bayesian war-gaming engines to optimize PTB solutions and select the corresponding optimum acquisition strategies for acquiring a space system. The framework defines the action space for all players with a complete description of the elements associated with the games, including Department of Defense Acquisition Authority (DAA), stakeholders, warfighters, and potential contractors, War-Gaming Engines (WGEs) played by DAA, WGEs played by Contractor (KTR), and the players' Payoff and Cost functions (PCFs). The AGMF presented here addresses both complete and incomplete information cases. The proposed framework provides a recipe for the DAA and USAF-Space and Missile Systems Center (SMC) to acquire future space systems optimally.

  14. Increasingly automated procedure acquisition in dynamic systems

    NASA Technical Reports Server (NTRS)

    Mathe, Nathalie; Kedar, Smadar

    1992-01-01

    Procedures are widely used by operators for controlling complex dynamic systems. Currently, most development of such procedures is done manually, consuming a large amount of paper, time, and manpower in the process. While automated knowledge acquisition is an active field of research, not much attention has been paid to the problem of computer-assisted acquisition and refinement of complex procedures for dynamic systems. The Procedure Acquisition for Reactive Control Assistant (PARC), which is designed to assist users in more systematically and automatically encoding and refining complex procedures. PARC is able to elicit knowledge interactively from the user during operation of the dynamic system. We categorize procedure refinement into two stages: diagnosis - diagnose the failure and choose a repair - and repair - plan and perform the repair. The basic approach taken in PARC is to assist the user in all steps of this process by providing increased levels of assistance with layered tools. We illustrate the operation of PARC in refining procedures for the control of a robot arm.

  15. Maintenance Information and Data Acquisition System (MIDAS)

    SciTech Connect

    Stansberry, C.T.; Odom, S.M.; Martin, C.D. )

    1989-09-01

    The Maintenance Information Data Acquisition System (MIDAS) is an innovative program to combine new and existing programs into one unique system that allows quick response to a wide range of management information programs, leading to more effective administration of the Maintenance Management Department of the Instrumentation and Controls Division at Oak Ridge National Laboratory. The goal of this system is to provide rapid access to broad areas of management programs as easily as possible. Doing so with the touch of a single computer key thus lives up to the Midas legend, the Golden Touch.''

  16. Small parachute flight data acquisition system

    SciTech Connect

    Ryerson, D.E.; Hauser, G.C.

    1989-01-01

    Sandia National Laboratories does extensive parachute design and testing. In support of that work, Sandia's Telemetry Department has designed and fielded a small, inexpensive data acquisition system. The system has been used in over fifty parachute and water entry tests. It consists of a microprocessor controlled unit which digitizes up to eight channels of signal-conditioned analog data and stores the data in memory for readout after the test. The system is also capable of doing control functions such as releasing the parachute at a predetermined time after unit release. 4 refs., 7 figs.

  17. Embedded data acquisition system for neutron monitors

    NASA Astrophysics Data System (ADS)

    Población, Ó. G.; Blanco, J. J.; Gómez-Herrero, R.; Steigies, C. T.; Medina, J.; Tejedor, I. G.; Sánchez, S.

    2014-08-01

    This article presents the design and implementation of a new data acquisition system to be used as replacement for the old ones that have been in use with neutron monitors for the last decades and, which are eventually becoming obsolete. This new system is also intended to be used in new installations, enabling these scientific instruments to use today's communication networks to send data and receive commands from the operators. This system is currently running in two stations: KIEL2, in the Christian-Albrechts-Universität zu Kiel, Kiel, Germany, and CALMA, in the Castilla-La Mancha Neutron Monitor, Guadalajara, Spain.

  18. The HyperCP data acquisition system

    SciTech Connect

    Kaplan, D.M.; E871 Collaboration

    1997-06-01

    For the HyperCP experiment at Fermilab, we have assembled a data acquisition system that records on up to 45 Exabyte 8505 tape drives in parallel at up to 17 MB/s. During the beam spill, data are acquired from the front-end digitization systems at {approx} 60 MB/s via five parallel data paths. The front-end systems achieve typical readout deadtime of {approx} 1 {micro}s per event, allowing operation at 75-kHz trigger rate with {approx_lt}30% deadtime. Event building and tapewriting are handled by 15 Motorola MVME167 processors in 5 VME crates.

  19. A simulation of data acquisition system for SSC experiments

    SciTech Connect

    Watase, Y.; Ikeda, H.

    1989-04-01

    A simulation on some parts of the data acquisition system was performed using a general purpose simulation language GPSS. Several results of the simulation are discussed for the data acquisition system for the SSC experiment.

  20. MONSOON: Image Acquisition System or "Pixel Server"

    NASA Astrophysics Data System (ADS)

    Starr, Barry M.; Buchholz, Nick C.; Rahmer, Gustavo; Penegor, Gerald; Schmidt, Ricardo E.; Warner, Michael; Merrill, Michael; Claver, Charles F.; Ho, Y.; Chopra, K. N.; Shroff, C.; Shroff, D.

    2003-03-01

    The MONSOON Image Acquisition System has been designed to meet the need for scalable, multichannel, high-speed image acquisition required for the next-generation optical and infared detectors and mosaic projects currently under development at NOAO as described in other papers at this proceeding such as ORION, NEWFIRM, QUOTA, ODI and LSST. These new systems with their large scale (64 to 2000 channels) and high performance (up to 1Gbyte/s) raise new challenges in terms of communication bandwidth, data storage and data processing requirements which are not adequately met by existing astronomical controllers. In order to meet this demand, new techniques for not only a new detector controller, but rather a new image acquisition architecture, have been defined. These extremely large scale imaging systems also raise less obvious concerns in previously neglected areas of controller design such as physical size and form factor issues, power dissipation and cooling near the telescope, system assembly/test/ integration time, reliability, and total cost of ownership. At NOAO we have taken efforts to look outside of the astronomical community for solutions found in other disciplines to similar classes of problems. A large number of the challenges raised by these system needs are already successfully being faced in other areas such as telecommunications, instrumentation and aerospace. Efforts have also been made to use true commercial off the shelf (COTS) system elements, and find truly technology independent solutions for a number of system design issues whenever possible. The Monsoon effort is a full-disclosure development effort by NOAO in collaboration with the CARA ASTEROID project for the benefit of the astronomical community.

  1. Magnetic Field Response Measurement Acquisition System

    NASA Technical Reports Server (NTRS)

    Woodward, Stanley E. (Inventor); Taylor, Bryant D. (Inventor)

    2007-01-01

    Magnetic field response sensors designed as passive inductor- capacit or circuits produce magnetic field responses whose harmonic frequenci es correspond to states of physical properties for which the sensors measure. Power to the sensing element is acquired using Faraday induc tion. A radio frequency antenna produces the time varying magnetic fi eld used for powering the sensor, as well as receiving the magnetic field response of the sensor. An interrogation architecture for disce rning changes in sensor's response frequency, resistance and amplitud e is integral to the method thus enabling a variety of measurements. Multiple sensors can be interrogated using this method, thus eliminat ing the need to have a data acquisition channel dedicated to each se nsor. The method does not require the sensors to be in proximity to a ny form of acquisition hardware. A vast array of sensors can be used as interchangeable parts in an overall sensing system.

  2. Magnetic Field Response Measurement Acquisition System

    NASA Technical Reports Server (NTRS)

    Woodard, Stanley E. (Inventor); Taylor, Bryant D. (Inventor); Shams, Qamar A. (Inventor); Fox, Robert L. (Inventor); Fox, Christopher L. (Inventor); Fox, Melanie L. (Inventor); Bryant, Robert G. (Inventor)

    2006-01-01

    Magnetic field response sensors designed as passive inductor-capacitor circuits produce magnetic field responses whose harmonic frequencies correspond to states of physical properties for which the sensors measure. Power to the sensing element is acquired using Faraday induction. A radio frequency antenna produces the time varying magnetic field used for powering the sensor, as well as receiving the magnetic field response of the sensor. An interrogation architecture for discerning changes in sensor s response kequency, resistance and amplitude is integral to the method thus enabling a variety of measurements. Multiple sensors can be interrogated using this method, thus eliminating the need to have a data acquisition channel dedicated to each sensor. The method does not require the sensors to be in proximity to any form of acquisition hardware. A vast array of sensors can be used as interchangeable parts in an overall sensing system.

  3. Acquisition of a laboratory information system.

    PubMed

    Bilger, M P

    1987-07-01

    As with any large project, the proper planning and execution of the entire project scope will help ensure success. Following a carefully delinated plan for the acquisition of an LIS is a lengthy and time consuming task, but one well worth the effort. This process could take several years to complete from concept to implementation, but the selection of the right vendor will ultimately save the institution money by reducing costs, increasing personnel efficiency and improving the quality of care. In the end, improved patient care will allow the institution to grow and develop projects that serve the patient population outside of the institution's walls. The purchase of a computer system for the laboratory is one of the most taxing procedures that laboratory and hospital personnel will undertake, but one well worth the effort if done properly. Poor planning of the acquisition will only lead to increased costs and frustrations. Do it right the first time. PMID:10284495

  4. Acquisition of a laboratory information system.

    PubMed

    Bilger, M P

    1987-07-01

    As with any large project, the proper planning and execution of the entire project scope will help ensure success. Following a carefully delinated plan for the acquisition of an LIS is a lengthy and time consuming task, but one well worth the effort. This process could take several years to complete from concept to implementation, but the selection of the right vendor will ultimately save the institution money by reducing costs, increasing personnel efficiency and improving the quality of care. In the end, improved patient care will allow the institution to grow and develop projects that serve the patient population outside of the institution's walls. The purchase of a computer system for the laboratory is one of the most taxing procedures that laboratory and hospital personnel will undertake, but one well worth the effort if done properly. Poor planning of the acquisition will only lead to increased costs and frustrations. Do it right the first time.

  5. Jefferson Lab Data Acquisition Run Control System

    SciTech Connect

    Vardan Gyurjyan; Carl Timmer; David Abbott; William Heyes; Edward Jastrzembski; David Lawrence; Elliott Wolin

    2004-10-01

    A general overview of the Jefferson Lab data acquisition run control system is presented. This run control system is designed to operate the configuration, control, and monitoring of all Jefferson Lab experiments. It controls data-taking activities by coordinating the operation of DAQ sub-systems, online software components and third-party software such as external slow control systems. The main, unique feature which sets this system apart from conventional systems is its incorporation of intelligent agent concepts. Intelligent agents are autonomous programs which interact with each other through certain protocols on a peer-to-peer level. In this case, the protocols and standards used come from the domain-independent Foundation for Intelligent Physical Agents (FIPA), and the implementation used is the Java Agent Development Framework (JADE). A lightweight, XML/RDF-based language was developed to standardize the description of the run control system for configuration purposes.

  6. Two Demonstrations with a New Data-Acquisition System

    ERIC Educational Resources Information Center

    Kraftmakher, Yaakov

    2014-01-01

    Nowadays, the use of data-acquisition systems in undergraduate laboratories is routine. Many computer-assisted experiments became possible with the PASCO scientific data-acquisition system based on the 750 Interface and DataStudio software. A new data-acquisition system developed by PASCO includes the 850 Universal Interface and Capstone software.…

  7. Modeling of the DZero data acquisition system

    SciTech Connect

    Angstadt, R.; Johnson, M.; Manning, I.L. ); Wightman, J.A. . Dept. of Physics Texas Accelerator Center, The Woodlands, TX )

    1991-12-01

    A queuing theory model was used in the initial design of the D0 data acquisition system. It was mainly used for the front end electronic systems. Since then the model has been extended to include the entire data path for the tracking system. The tracking system generates the most data so we expect this system to determine the overall transfer rate. The model was developed using both analytical and simulation methods for solving a series of single server queues. We describe the model and the methods used to develop it. We also present results from the original models, updated calculations representing the system as built and comparisons with measurements made with the hardware in place for the cosmic ray test run. 3 refs.

  8. Self-adaptive iris image acquisition system

    NASA Astrophysics Data System (ADS)

    Dong, Wenbo; Sun, Zhenan; Tan, Tieniu; Qiu, Xianchao

    2008-03-01

    Iris image acquisition is the fundamental step of the iris recognition, but capturing high-resolution iris images in real-time is very difficult. The most common systems have small capture volume and demand users to fully cooperate with machines, which has become the bottleneck of iris recognition's application. In this paper, we aim at building an active iris image acquiring system which is self-adaptive to users. Two low resolution cameras are co-located in a pan-tilt-unit (PTU), for face and iris image acquisition respectively. Once the face camera detects face region in real-time video, the system controls the PTU to move towards the eye region and automatically zooms, until the iris camera captures an clear iris image for recognition. Compared with other similar works, our contribution is that we use low-resolution cameras, which can transmit image data much faster and are much cheaper than the high-resolution cameras. In the system, we use Haar-like cascaded feature to detect faces and eyes, linear transformation to predict the iris camera's position, and simple heuristic PTU control method to track eyes. A prototype device has been established, and experiments show that our system can automatically capture high-quality iris image in the range of 0.6m×0.4m×0.4m in average 3 to 5 seconds.

  9. Small multipurpose stored data acquisition system

    SciTech Connect

    Hauser, G.C.; Ryerson, D.E.

    1990-01-01

    Sandia National Laboratories Telemetry Department has designed and is fielding a small, inexpensive multipurpose stored data acquisition system in tests ranging from 6000 meters below the ocean surface in seafloor penetrators to 40,000 meters above sea level in gamma ray telescope balloons. The systems consists of a simple microprocessor-controlled unit which digitizes analog data stores the data in memory for readout after the test by a portable personal compute. The system has been used in over ninety tests consisting of parachute drops, water entry test, vehicle environmental monitoring, and seafloor penetration tests. Data typically recorded with the system are acceleration, strain, temperature, pressure, and angular velocity. The system is also capable of generating control functions such as parachute release. 5 refs., 6 figs.

  10. Data acquisition system for BLM at NSRL

    NASA Astrophysics Data System (ADS)

    Gong, Guanghua; Li, Yuxiong; Cui, Yonggang; Li, Juexin; Li, Weiming; Shao, Beibei

    2003-06-01

    A Beam Loss Monitoring (BLM) System has been built up for the 800 MeV storage ring in National Synchrotron Radiation Laboratory. It has helped to resolve some problems about beam lifetime. This paper introduces the data acquisition system of BLM. It has a counter whose counting rate is higher than 10 MHz. Furthermore, this counter is a free running one that will never lose any pulse when it is being read or written. This DAQ system is composed of 14 front-ends and a console connected via CAN bus. The intensity, distribution and time information of the beam loss can be offered by this system. This BLM system is helpful for machine study and operation.

  11. Secure Video Surveillance System Acquisition Software

    SciTech Connect

    2009-12-04

    The SVSS Acquisition Software collects and displays video images from two cameras through a VPN, and store the images onto a collection controller. The software is configured to allow a user to enter a time window to display up to 2 1/2, hours of video review. The software collects images from the cameras at a rate of 1 image per second and automatically deletes images older than 3 hours. The software code operates in a linux environment and can be run in a virtual machine on Windows XP. The Sandia software integrates the different COTS software together to build the video review system.

  12. An Effective 3D Ear Acquisition System

    PubMed Central

    Liu, Yahui; Lu, Guangming; Zhang, David

    2015-01-01

    The human ear is a new feature in biometrics that has several merits over the more common face, fingerprint and iris biometrics. It can be easily captured from a distance without a fully cooperative subject. Also, the ear has a relatively stable structure that does not change much with the age and facial expressions. In this paper, we present a novel method of 3D ear acquisition system by using triangulation imaging principle, and the experiment results show that this design is efficient and can be used for ear recognition. PMID:26061553

  13. An Effective 3D Ear Acquisition System.

    PubMed

    Liu, Yahui; Lu, Guangming; Zhang, David

    2015-01-01

    The human ear is a new feature in biometrics that has several merits over the more common face, fingerprint and iris biometrics. It can be easily captured from a distance without a fully cooperative subject. Also, the ear has a relatively stable structure that does not change much with the age and facial expressions. In this paper, we present a novel method of 3D ear acquisition system by using triangulation imaging principle, and the experiment results show that this design is efficient and can be used for ear recognition.

  14. An Effective 3D Ear Acquisition System.

    PubMed

    Liu, Yahui; Lu, Guangming; Zhang, David

    2015-01-01

    The human ear is a new feature in biometrics that has several merits over the more common face, fingerprint and iris biometrics. It can be easily captured from a distance without a fully cooperative subject. Also, the ear has a relatively stable structure that does not change much with the age and facial expressions. In this paper, we present a novel method of 3D ear acquisition system by using triangulation imaging principle, and the experiment results show that this design is efficient and can be used for ear recognition. PMID:26061553

  15. Secure Video Surveillance System Acquisition Software

    2009-12-04

    The SVSS Acquisition Software collects and displays video images from two cameras through a VPN, and store the images onto a collection controller. The software is configured to allow a user to enter a time window to display up to 2 1/2, hours of video review. The software collects images from the cameras at a rate of 1 image per second and automatically deletes images older than 3 hours. The software code operates in amore » linux environment and can be run in a virtual machine on Windows XP. The Sandia software integrates the different COTS software together to build the video review system.« less

  16. Bagless Transfer System Welder Data Acquisition Software

    SciTech Connect

    Collins, Susan L.

    2003-09-30

    The Bagless Transfer System Welder Data Acquisition Software (BTS DAS) was developed by SRTC to replace a strip chart recorder that has been in place since the design of the BTS. During the welding process, critical weld parameters such as weld current and voltage, can give valuable information about the weld. In the past, weld data from the TID welding process, has been monitored using strip chart recorders. The data from the weld process, recorded on the strip chart recorder traces, are reviewed to analyze the weld. The BTS DAS improves this technology by digitizing the weld data which allows for automation of the analysis process. Also, the data files are now stored digitally as well as a hard copy printout, so they can be reanalyzed if needed. The BTS DAS performs the necessary functions to perform the data acquisition functions during the BTS Welding Process. It is important to monitor the critical weld parameters, current and voltage, during a weld as they can be used to set acceptance criteria for weld acceptance. The software monitors and records the weld current, voltage, and RPM data. The welder DAS is a passive device and does not control the welder. The BTS control system interfaces directly with the welder and the BTS DAS. Digital handshaking is used between the BTS DAS and the BTS control system to ensure that the DAS is ready to weld prior to allowing the operator to initiate the welding process.

  17. Commissioning of the ALICE data acquisition system

    NASA Astrophysics Data System (ADS)

    Anticic, T.; Barroso, V.; Carena, F.; Carena, W.; Chapeland, S.; Cobanoglu, O.; Dénes, E.; Divià, R.; Fuchs, U.; Kiss, T.; Makhlyueva, I.; Ozok, F.; Roukoutakis, F.; Schossmaier, K.; Soós, C.; Vyvre, P. V.; Vergara, S.

    2008-07-01

    ALICE (A Large Ion Collider Experiment) is the heavy-ion detector designed to study the physics of strongly interacting matter and the quark-gluon plasma at the CERN Large Hadron Collider (LHC). A flexible, large bandwidth Data Acquisition System (DAQ) has been designed and deployed to collect sufficient statistics in the short running time foreseen per year for heavy ions and to accommodate very different requirements originated from the 18 sub-detectors. The Data Acquisition and Test Environment (DATE) is the software framework handling the data from the detector electronics up to the mass storage. This paper reviews the DAQ software and hardware architecture, including the latest features of the final design, such as the handling of the numerous calibration procedures in a common framework. We also discuss the large scale tests conducted on the real hardware to assess the standalone DAQ performances, its interfaces with the other online systems and the extensive commissioning performed in order to be ready for cosmics data taking scheduled to start in November 2007. The test protocols followed to integrate and validate each sub-detector with DAQ and Trigger hardware synchronized by the Experiment Control System are described. Finally, we give an overview of the experiment logbook, and some operational aspects of the deployment of our computing facilities. The implementation of a Transient Data Storage able to cope with the 1.25 GB/s recorded by the event-building machines and the data quality monitoring framework are covered in separate papers.

  18. Bagless Transfer System Welder Data Acquisition Software

    2003-09-30

    The Bagless Transfer System Welder Data Acquisition Software (BTS DAS) was developed by SRTC to replace a strip chart recorder that has been in place since the design of the BTS. During the welding process, critical weld parameters such as weld current and voltage, can give valuable information about the weld. In the past, weld data from the TID welding process, has been monitored using strip chart recorders. The data from the weld process, recordedmore » on the strip chart recorder traces, are reviewed to analyze the weld. The BTS DAS improves this technology by digitizing the weld data which allows for automation of the analysis process. Also, the data files are now stored digitally as well as a hard copy printout, so they can be reanalyzed if needed. The BTS DAS performs the necessary functions to perform the data acquisition functions during the BTS Welding Process. It is important to monitor the critical weld parameters, current and voltage, during a weld as they can be used to set acceptance criteria for weld acceptance. The software monitors and records the weld current, voltage, and RPM data. The welder DAS is a passive device and does not control the welder. The BTS control system interfaces directly with the welder and the BTS DAS. Digital handshaking is used between the BTS DAS and the BTS control system to ensure that the DAS is ready to weld prior to allowing the operator to initiate the welding process.« less

  19. The DISTO data acquisition system at SATURNE

    SciTech Connect

    Balestra, F. |; Bedfer, Y.; Bertini, R. ||

    1998-06-01

    The DISTO collaboration has built a large-acceptance magnetic spectrometer designed to provide broad kinematic coverage of multiparticle final states produced in pp scattering. The spectrometer has been installed in the polarized proton beam of the Saturne accelerator in Saclay to study polarization observables in the {rvec p}p {yields} pK{sup +}{rvec Y} (Y = {Lambda}, {Sigma}{sup 0} or Y{sup *}) reaction and vector meson production ({psi}, {omega} and {rho}) in pp collisions. The data acquisition system is based on a VME 68030 CPU running the OS/9 operating system, housed in a single VME crate together with the CAMAC interface, the triple port ECL memories, and four RISC R3000 CPU. The digitization of signals from the detectors is made by PCOS III and FERA front-end electronics. Data of several events belonging to a single Saturne extraction are stored in VME triple-port ECL memories using a hardwired fast sequencer. The buffer, optionally filtered by the RISC R3000 CPU, is recorded on a DLT cassette by DAQ CPU using the on-board SCSI interface during the acceleration cycle. Two UNIX workstations are connected to the VME CPUs through a fast parallel bus and the Local Area Network. They analyze a subset of events for on-line monitoring. The data acquisition system is able to read and record 3,500 ev/burst in the present configuration with a dead time of 15%.

  20. Instrumentation & Data Acquisition System (D AS) Engineer

    NASA Technical Reports Server (NTRS)

    Jackson, Markus Deon

    2015-01-01

    The primary job of an Instrumentation and Data Acquisition System (DAS) Engineer is to properly measure physical phenomenon of hardware using appropriate instrumentation and DAS equipment designed to record data during a specified test of the hardware. A DAS system includes a CPU or processor, a data storage device such as a hard drive, a data communication bus such as Universal Serial Bus, software to control the DAS system processes like calibrations, recording of data and processing of data. It also includes signal conditioning amplifiers, and certain sensors for specified measurements. My internship responsibilities have included testing and adjusting Pacific Instruments Model 9355 signal conditioning amplifiers, writing and performing checkout procedures, writing and performing calibration procedures while learning the basics of instrumentation.

  1. Shigella Iron Acquisition Systems and their Regulation

    PubMed Central

    Wei, Yahan; Murphy, Erin R.

    2016-01-01

    Survival of Shigella within the host is strictly dependent on the ability of the pathogen to acquire essential nutrients, such as iron. As an innate immune defense against invading pathogens, the level of bio-available iron within the human host is maintained at exceeding low levels, by sequestration of the element within heme and other host iron-binding compounds. In response to sequestration mediated iron limitation, Shigella produce multiple iron-uptake systems that each function to facilitate the utilization of a specific host-associated source of nutrient iron. As a mechanism to balance the essential need for iron and the toxicity of the element when in excess, the production of bacterial iron acquisition systems is tightly regulated by a variety of molecular mechanisms. This review summarizes the current state of knowledge on the iron-uptake systems produced by Shigella species, their distribution within the genus, and the molecular mechanisms that regulate their production. PMID:26904516

  2. Database Structure and System Design of an Online Acquisition System.

    ERIC Educational Resources Information Center

    Balasubramanian, V.; Bhattacharyya, Swati

    1986-01-01

    This description of the design of an online library acquisition system highlights the use of database management systems in developing information retrieval systems, and software requirements for the hierarchical menu-driven operation. A conceptual view of the database is included. (LRW)

  3. Multiple channel optical data acquisition system

    DOEpatents

    Fasching, G.E.; Goff, D.R.

    1985-02-22

    A multiple channel optical data acquisition system is provided in which a plurality of remote sensors monitoring specific process variable are interrogated by means of a single optical fiber connecting the remote station/sensors to a base station. The remote station/sensors derive all power from light transmitted through the fiber from the base station. Each station/sensor is individually accessed by means of a light modulated address code sent over the fiber. The remote station/sensors use a single light emitting diode to both send and receive light signals to communicate with the base station and provide power for the remote station. The system described can power at least 100 remote station/sensors over an optical fiber one mile in length.

  4. Auxiliary DCP data acquisition system. [airborne system

    NASA Technical Reports Server (NTRS)

    Snyder, R. V.

    1975-01-01

    An airborne DCP Data Aquisition System has been designed to augment the ERTS satellite data recovery system. The DCP's are data collection platforms located at pertinent sites. With the appropriate sensors they are able to collect, digitally encode and transmit environmental parameters to the ERTS satellite. The satellite in turn relays these transmissions to a ground station for processing. The satellite is available for such relay duty a minimum of two times in a 24-hour period. The equipment is to obtain continuous DCP data during periods of unusual environmental activity--storms, floods, etc. Two circumstances contributed to the decision to design such a system; (1) Wallops Station utilizes surveillance aircraft in support of rocket launches and also in support of earth resources activities; (2) the area in which Wallops is located, the Delaware and Chesapeake Bay areas, are fertile areas for DCP usage. Therefore, by developing an airborne DCP receiving station and installing it on aircraft more continuous DCP data can be provided from sites in the surrounding areas at relatively low cost.

  5. Medikas — An Interactive Knowledge Acquisition System*

    PubMed Central

    Baskin, A. B.; Levy, Allan H.

    1978-01-01

    Renewed interest in the use of computer-based system for medical problem solving has directed attention to the problems involved in representing medical knowledge in a form that will enable such knowledge to be 1) acquired efficiently, with guidance from the automated system, 2) maintained in such a form that modifications to it can be made easily, and 3) utilized by one or more systems of machine-based logic or inference. Our work in studying knowledge representation and devising structures for the interactive acquisition and efficient storage of information in knowledge bases has been directed toward these goals. A system of computer programs, MEDIKAS has been created. The system interacts with an expert in order to acquire information on an area of medical knowledge. In addition to operating interactively, the system manifests a level of intelligence in its discourse with the expert: by utilizing inference on information already acquired, it deduces relationships when possible, and thus promotes both the efficiency of the expert and the consistency of the content.

  6. Single transmission line data acquisition system

    DOEpatents

    Fasching, George E.

    1984-01-01

    A single transmission line interrogated multiple channel data acquisition system is provided in which a plurality of remote station/sensors monitor specific process variables and transmit measurement values over the single transmission line to a master station when addressed by the master station. Power for all remote stations (up to 980) is provided by driving the line with constant voltage supplied from the master station and automatically maintained independent of the number of remote stations directly connected to the line. The transmission line can be an RG-62 coaxial cable with lengths up to about 10,000 feet with branches up to 500 feet. The remote stations can be attached randomly along the line. The remote stations can be scanned at rates up to 980 channels/second.

  7. CODA: A scalable, distributed data acquisition system

    SciTech Connect

    Watson, W.A. III; Chen, J.; Heyes, G.; Jastrzembski, E.; Quarrie, D. )

    1994-02-01

    A new data acquisition system has been designed for physics experiments scheduled to run at CEBAF starting in the summer of 1994. This system runs on Unix workstations connected via ethernet, FDDI, or other network hardware to multiple intelligent front end crates -- VME, CAMAC or FASTBUS. CAMAC crates may either contain intelligent processors, or may be interfaced to VME. The system is modular and scalable, from a single front end crate and one workstation linked by ethernet, to as may as 32 clusters of front end crates ultimately connected via a high speed network to a set of analysis workstations. The system includes an extensible, device independent slow controls package with drivers for CAMAC, VME, and high voltage crates, as well as a link to CEBAF accelerator controls. All distributed processes are managed by standard remote procedure calls propagating change-of-state requests, or reading and writing program variables. Custom components may be easily integrated. The system is portable to any front end processor running the VxWorks real-time kernel, and to most workstations supplying a few standard facilities such as rsh and X-windows, and Motif and socket libraries. Sample implementations exist for 2 Unix workstation families connected via ethernet or FDDI to VME (with interfaces to FASTBUS or CAMAC), and via ethernet to FASTBUS or CAMAC.

  8. CODA: a scalable, distributed data acquisition system

    SciTech Connect

    David Quarrie; Edward Jastrzembski; William Heyes; Jie Chen; William Watson

    1994-02-01

    A new data acquisition system has been designed for physics experiments scheduled to run at CEBAF starting in the summer of 1994. This system runs on Unix workstations connected via ethernet, FDDI, or other network hardware to multiple intelligent front end crates-VME, CAMAC or FASTBUS. CAMAC crates may either contain intelligent processors, or may be interfaced to VME. The system is modular and scalable, from a single front end crate and one workstation linked by ethernet, to as many as 32 clusters of front end crates ultimately connected via a high speed network to a set of analysis workstations. The system includes an extensible, device independent slow controls package with drivers for CAMAC, VME, and high voltage crates, as well as a link to CEBAF accelerator controls. All distributed processes are managed by standard remote procedure calls propagating change-of-state requests, or reading and writing program variables. Custom components may be easily integrated. The system is portable to any front end processor running the VxWorks real-time kernel, and to most workstations supplying a few standard facilities such as rsh and X-windows, and Motif and socket libraries. Sample implementations exist for 2 Unix workstation families connected via ethernet or FDDI to VME (with interfaces to FASTBUS or CAMAC), and via ethernet to FASTBUS or CAMAC

  9. Wound Documentation by Using 3G Mobile as Acquisition Terminal: An Appropriate Proposal for Community Wound Care.

    PubMed

    Ge, Kui; Wu, Minjie; Liu, Hu; Gong, Jiahong; Zhang, Yi; Hu, Qiang; Fang, Min; Tao, Yanping; Cai, Minqiang; Chen, Hua; Wang, Jianbo; Xie, Ting; Lu, Shuliang

    2015-06-01

    The increasing numbers of cases of wound disease are now posing a big challenge in China. For more convenience of wound patients, wound management in community health care centers under the supervision of a specialist at general hospitals is an ideal solution. To ensure an accurate diagnosis in community health clinics, it is important that "the same language" for wound description, which may be composed of unified format description, including wound image, must be achieved. We developed a wound information management system that was built up by acquisition terminal, wound description, data bank, and related software. In this system, a 3G mobile phone was applied as acquisition terminal, which could be used to access to the data bank. This documentation system was thought to be an appropriate proposal for community wound care because of its objectivity, uniformity, and facilitation. It also provides possibility for epidemiological study in the future. PMID:25256281

  10. Wound Documentation by Using 3G Mobile as Acquisition Terminal: An Appropriate Proposal for Community Wound Care.

    PubMed

    Ge, Kui; Wu, Minjie; Liu, Hu; Gong, Jiahong; Zhang, Yi; Hu, Qiang; Fang, Min; Tao, Yanping; Cai, Minqiang; Chen, Hua; Wang, Jianbo; Xie, Ting; Lu, Shuliang

    2015-06-01

    The increasing numbers of cases of wound disease are now posing a big challenge in China. For more convenience of wound patients, wound management in community health care centers under the supervision of a specialist at general hospitals is an ideal solution. To ensure an accurate diagnosis in community health clinics, it is important that "the same language" for wound description, which may be composed of unified format description, including wound image, must be achieved. We developed a wound information management system that was built up by acquisition terminal, wound description, data bank, and related software. In this system, a 3G mobile phone was applied as acquisition terminal, which could be used to access to the data bank. This documentation system was thought to be an appropriate proposal for community wound care because of its objectivity, uniformity, and facilitation. It also provides possibility for epidemiological study in the future.

  11. The WASA data acquisition system (WDAQ)

    SciTech Connect

    Gustafsson, L.; Marciniewski, P.; Sukhanov, A.

    1999-06-01

    The WASA Data Acquisition System (WDAQ) is described. It is a modular, and scalable network based system. The chosen structure facilitate that different old and new front-end electronics standards can work together in an efficient way. Fast hardware triggers are created from discriminated signals from specific parts of the WASA detector by extensive use of programmable logic. The trigger logic is configured to do cluster finding in one or two dimensions. The front-end data is linked together in an event-building switch using the Asynchronous Transfer Mode (ATM) protocol and sent to different PC-stations for further filtering, before put onto tape. The data analysis software is using the ROOT (CERN) system which provides a set of object oriented frameworks with all the functionality needed to handle and analyze large amounts of data in a very efficient way. The slow control software is based on the MIDAS (PSI/TRIUMF) system and comprises a fast online database to keep and monitor all WDAQ parameters.

  12. Digital Data Acquisition System for Gammasphere

    NASA Astrophysics Data System (ADS)

    Hoffman, C. R.; Anderson, J. T.; Carpenter, M. P.; Hayden, T. A.; Janssens, R. V. F.; Kreps, A.; Lauritsen, T.; Lister, C. J.; Seweryniak, D.; Wilt, P.; Zhu, S.; Cromaz, M.; Lionberger, C.; Lee, I. Y.

    2010-11-01

    A new digital-based data acquisition system for Gammasphere is under development. This system leverages the electronics designed for the GRETINA collaboration. At the center of this development are the GRETINA 10-channel digitizer modules which digitize the Ge preamp signals at a 100MHz rate [1]. The new DAQ will increase event throughput significantly over the existing system while addressing multiple repair and maintenance issues. New hardware and firmware to integrate the GRETINA electronics with Gammasphere has been developed allowing for a staged changeover so that the experimental program will not be adversely affected. A successful field test of a small number of channels running parasitically to the analog system has demonstrated the anticipated increase in event rate and shown that the energy resolution will still remain satisfactory at these higher rates. The current status of project will be presented. This research is supported by the DOE Office of Nuclear Physics under Contract No. DE-AC02-06CH11357. [1] J.T. Anderson et al., IEEE Transactions on Nuclear Science, vol. 56, issue 1, pp. 258-265.

  13. Optimization of spatial acquisition systems for low-light-level robustness in space optical communications.

    PubMed

    Bai, Shuai; Qiang, Jia; Zhang, Liang; Wang, Jianyu

    2015-08-15

    The channel establishment in space optical communications relies on the Acquisition, Tracking, and Pointing (ATP) systems to initially acquire and then stably track the beacon beam. However, insufficient optical power may lead to unstable acquisition or even acquisition failure. In this Letter, we describe the mechanisms causing the instability, and then propose an approach to constrain the acquisition velocity. The approach is based on velocity prediction obtained from the light spot centroids and angle measurement data. Theoretical and experimental results show that the acceptable minimum optical power for acquisition decreases by 5.5 dB after optimization, which effectively enhances the acquisition system's robustness under low-light-level conditions. This approach improves the adaptability of satellite-ground optical communications and also has practical value for deep-space optical communications. PMID:26274651

  14. Optimization of spatial acquisition systems for low-light-level robustness in space optical communications.

    PubMed

    Bai, Shuai; Qiang, Jia; Zhang, Liang; Wang, Jianyu

    2015-08-15

    The channel establishment in space optical communications relies on the Acquisition, Tracking, and Pointing (ATP) systems to initially acquire and then stably track the beacon beam. However, insufficient optical power may lead to unstable acquisition or even acquisition failure. In this Letter, we describe the mechanisms causing the instability, and then propose an approach to constrain the acquisition velocity. The approach is based on velocity prediction obtained from the light spot centroids and angle measurement data. Theoretical and experimental results show that the acceptable minimum optical power for acquisition decreases by 5.5 dB after optimization, which effectively enhances the acquisition system's robustness under low-light-level conditions. This approach improves the adaptability of satellite-ground optical communications and also has practical value for deep-space optical communications.

  15. MIDAS (Master Information and Data Acquisition System)

    SciTech Connect

    Ball, D.L.

    1986-01-01

    The Master Information and Data Acquisition System (MIDAS) is a computerized work control system that provides 24-hour, real-time access to plant equipment information and work package status. It is used in the 400 Area of the Department of Energy (DOE) Hanford Site in Richland, Washington. MIDAS was originally created to aid in the release and control of work at the Fast Flux Test Facility (FFTF), which is operated by the Westinghouse Hanford Company for the DOE. After MIDAS performed that function at FFTF successfully for over two years, its role was expanded to provide similar functions for other facilities supporting the LMR mission. Through its ability to provide online, accurate information on plant components, safety criteria, and work package status, MIDAS reinforces Operations functions and the control and authorization of maintenance activities in the FFTF plant and in other related facilities. Thus, MIDAS enhances the operational safety, as well as the planning and scheduling process for these facilities. MIDAS consists of three parts: The Plant Tracking System (PTS), the Work Control Log (WCL), and the MIDAS Component Indices (MCI).

  16. A unified acquisition system for acoustic data

    NASA Technical Reports Server (NTRS)

    Zuckerwar, A. J.; Holmes, H. K.

    1977-01-01

    A multichannel, acoustic AM carrier system was developed for a wide variety of applications, particularly for aircraft noise and sonic boom measurements. Each data acquisition channel consists of a condenser microphone, an acoustic signal converter, and a Zero Drive amplifier, along with peripheral supporting equipment. A control network insures continuous optimal tuning of the converter and permits remote calibration of the condenser microphone. With a 12.70-mm (1/2-in.) condenser microphone, the converter/Zero Drive amplifier combination has a frequency response from 0 Hz to 20 kHz (-3 db), a dynamic range exceeding 70 db, and a minimum noise floor of 50 db ref. 20 micro Pa) in the band 22.4 Hz to 22.4 kHz. The system requires no external impedance matching networks and is insensitive to cable length, at least up to 900 m (3,000 ft). System gain varies only + or - 1 db over the temperature range 4 to 54 C (40 to 130 F). Adapters are available to accommodate 23.77-mm (1-in.) and 6.35-mm (1/4-in.) microphones and to provide 30-db attenuation. A field test to obtain the acoustical time history of a helicopter flyover proved successful.

  17. The PAN-DA data acquisition system

    SciTech Connect

    Petravick, D.; Berg, D.; Berman, E.; Bernett, M.; Constanta-Fanourakis, P.; Dorries, T.; Haire, M.; Kaczar, K; MacKinnon, B.; Moore, C.; Nicinski, T.; Oleynik, G.; Pordes, R.; Sergey, G.; Votava, M.; White, V.

    1989-05-01

    The Online and Data Acquisition software groups at Fermi National Accelerator Laboratory have extended the VAXONLINE data acquisition package to include a VME based data path. The resulting environment, PAN-DA, provides a high throughput for logging, filtering, formatting and selecting events. 10 refs., 1 fig.

  18. Anadarko's Proposed Acquisition of Kerr-McGee and Western Gas Resources

    EIA Publications

    2006-01-01

    Presentation of company-level, non-proprietary data and relevant aggregate data for worldwide oil and natural gas reserves and production of Anadarko, Kerr-McGee, and Western Gas Resources to inform discussions of Anadarko Petroleum Corp.'s proposed acquisition of both Kerr-McGee Corp. and Western Gas Resources Inc. for a total of $23.3 billion, which was announced June 23, 2006.

  19. Data acquisition system for harmonic motion microwave Doppler imaging.

    PubMed

    Tafreshi, Azadeh Kamali; Karadaş, Mürsel; Top, Can Barış; Gençer, Nevzat Güneri

    2014-01-01

    Harmonic Motion Microwave Doppler Imaging (HMMDI) is a hybrid method proposed for breast tumor detection, which images the coupled dielectric and elastic properties of the tissue. In this paper, the performance of a data acquisition system for HMMDI method is evaluated on breast phantom materials. A breast fat phantom including fibro-glandular and tumor phantom regions is produced. The phantom is excited using a focused ultrasound probe and a microwave transmitter. The received microwave signal level is measured on three different points inside the phantom (fat, fibro-glandular, and tumor regions). The experimental results using the designed homodyne receiver proved the effectiveness of the proposed setup. In tumor phantom region, the signal level decreased about 3 dB compared to the signal level obtained from the fibro-glandular phantom area, whereas this signal was about 4 dB higher than the received signal from the fat phantom.

  20. Data acquisition system for Doppler radar vital-sign monitor.

    PubMed

    Vergara, Alexander M; Lubecke, Victor M

    2007-01-01

    Automatic gain control (AGC) units increase the dynamic range of a system to compensate for the limited dynamic range of analog to digital converters. This problem is compounded in wireless systems in which large changes in signal strength are effects of a changing environment. These issues are evident in the direct-conversion Doppler radar vital-sign monitor. Utilizing microwave radar signals reflecting off a human subject, a two-channel quadrature receiver can detect periodic movement resulting from cardio-pulmonary activity. The quadrature signal is analyzed using an arctangent demodulation that extracts vital phase information. A data acquisition (DAQ) system is proposed to deal with issues inherent in arctangent demodulation of a quadrature radar signal.

  1. A high-speed transputer-based data acquisition system

    NASA Astrophysics Data System (ADS)

    Loureiro, C. F. M.; Santos, J. M. G. B.; Simões, J. B.; Correia, C. M. B. A.; Zilker, M.

    1996-01-01

    A 250 MHz 8-bit transputer-based data acquisition VME bus module is described. This module has been designed as the acquisition node of a transputer-based real-time processing and data reduction system for the reflectometry diagnostic in the ASDEX Upgrade tokamak experiment. The architecture of the board is detailed, emphasizing the advantages of using recently delivered devices, like fast synchronous FIFOs, in a mixed ECL/TTL data acquisition architecture. It is shown that the implemented architecture leads naturally to the implementation of hardware triggers that allow the acquisition channels to operate as stand-alone modules in a self-triggered, self-timed, data acquisition mode. The advantages of using transputers as local control and processing units are discussed. The use of the board in the reflectometry diagnostic and the general processing goals of the system are presented together with data characterizing the performance of the acquisition channels.

  2. Real-Time Wireless Data Acquisition System

    NASA Technical Reports Server (NTRS)

    Valencia, Emilio J.; Perotti, Jose; Lucena, Angel; Mata, Carlos

    2007-01-01

    Current and future aerospace requirements demand the creation of a new breed of sensing devices, with emphasis on reduced weight, power consumption, and physical size. This new generation of sensors must possess a high degree of intelligence to provide critical data efficiently and in real-time. Intelligence will include self-calibration, self-health assessment, and pre-processing of raw data at the sensor level. Most of these features are already incorporated in the Wireless Sensors Network (SensorNet(TradeMark)), developed by the Instrumentation Group at Kennedy Space Center (KSC). A system based on the SensorNet(TradeMark) architecture consists of data collection point(s) called Central Stations (CS) and intelligent sensors called Remote Stations (RS) where one or more CSs can be accommodated depending on the specific application. The CS's major function is to establish communications with the Remote Stations and to poll each RS for data and health information. The CS also collects, stores and distributes these data to the appropriate systems requiring the information. The system has the ability to perform point-to-point, multi-point and relay mode communications with an autonomous self-diagnosis of each communications link. Upon detection of a communication failure, the system automatically reconfigures to establish new communication paths. These communication paths are automatically and autonomously selected as the best paths by the system based on the existing operating environment. The data acquisition system currently under development at KSC consists of the SensorNet(TradeMark) wireless sensors as the remote stations and the central station called the Radio Frequency Health Node (RFHN). The RFF1N is the central station which remotely communicates with the SensorNet(TradeMark) sensors to control them and to receive data. The system's salient feature is the ability to provide deterministic sensor data with accurate time stamps for both time critical and non

  3. Data Acquisition System for Instructional Spectroscopes

    NASA Astrophysics Data System (ADS)

    Almeida, C. B. S. B.; Hetem, A.

    2014-10-01

    This article aims to present the software for data acquisition developed in scientific initiation program - IC, for use in the design of a spectrometer built by students. The program was built in C++, a language in wide use today. The origin of spectra used is a simplified model of rustic spectroscope. This equipment basically consists of a box that does not allow light to enter, except through a slit made in the side of it, a diffraction media and a camera for data acquisition. After the image acquisition, one executes the data processing, followed by the usual steps of reduction and analysis of this type of tool. We have implemented a method for calibrating the spectroscope, through which one can compare the incidence of the photons with characteristic of each monochromatic wave. The final result is a one-dimensional spectrum that can be subsequently analyzed.

  4. Information management system breadboard data acquisition and control system.

    NASA Technical Reports Server (NTRS)

    Mallary, W. E.

    1972-01-01

    Description of a breadboard configuration of an advanced information management system based on requirements for high data rates and local and centralized computation for subsystems and experiments to be housed on a space station. The system is to contain a 10-megabit-per-second digital data bus, remote terminals with preprocessor capabilities, and a central multiprocessor. A concept definition is presented for the data acquisition and control system breadboard, and a detailed account is given of the operation of the bus control unit, the bus itself, and the remote acquisition and control unit. The data bus control unit is capable of operating under control of both its own test panel and the test processor. In either mode it is capable of both single- and multiple-message operation in that it can accept a block of data requests or update commands for transmission to the remote acquisition and control unit, which in turn is capable of three levels of data-handling complexity.

  5. Improvements and modifications to the NASA microwave signature acquisition system

    NASA Technical Reports Server (NTRS)

    Jean, B. R.; Newton, R. W.; Warren, G. L.; Clark, B. V.; Zajicek, J. L.

    1978-01-01

    A user oriented description of the modified and upgraded Microwave Signature Acquisition System is provided. The present configuration of the sensor system and its operating characteristics are documented and a step-by-step operating procedure provides instruction for mounting the antenna truss assembly, readying the system for data acquisition, and for controlling the system during the data collection sequence. The resulting data products are also identified.

  6. 75 FR 71560 - Defense Federal Acquisition Regulation Supplement; Cost and Software Data Reporting System (DFARS...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-24

    ... the cost and software data reporting requirements. DoD published a proposed rule at 75 FR 25165 on May... from small entities and other interested parties (proposed rule at 75 FR 25165). No comments were... Acquisition Regulation Supplement; Cost and Software Data Reporting System (DFARS Case 2008-D027)...

  7. Value-informed space systems design and acquisition

    NASA Astrophysics Data System (ADS)

    Brathwaite, Joy

    Investments in space systems are substantial, indivisible, and irreversible, characteristics that make them high-risk, especially when coupled with an uncertain demand environment. Traditional approaches to system design and acquisition, derived from a performance- or cost-centric mindset, incorporate little information about the spacecraft in relation to its environment and its value to its stakeholders. These traditional approaches, while appropriate in stable environments, are ill-suited for the current, distinctly uncertain, and rapidly changing technical and economic conditions; as such, they have to be revisited and adapted to the present context. This thesis proposes that in uncertain environments, decision-making with respect to space system design and acquisition should be value-based, or at a minimum value-informed. This research advances the value-centric paradigm by providing the theoretical basis, foundational frameworks, and supporting analytical tools for value assessment of priced and unpriced space systems. For priced systems, stochastic models of the market environment and financial models of stakeholder preferences are developed and integrated with a spacecraft-sizing tool to assess the system's net present value. The analytical framework is applied to a case study of a communications satellite, with market, financial, and technical data obtained from the satellite operator, Intelsat. The case study investigates the implications of the value-centric versus the cost-centric design and acquisition choices. Results identify the ways in which value-optimal spacecraft design choices are contingent on both technical and market conditions, and that larger spacecraft for example, which reap economies of scale benefits, as reflected by their decreasing cost-per-transponder, are not always the best (most valuable) choices. Market conditions and technical constraints for which convergence occurs between design choices under a cost-centric and a value

  8. 29. Perimeter acquisition radar building room #318, data processing system ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    29. Perimeter acquisition radar building room #318, data processing system area; data processor maintenance and operations center, showing data processing consoles - Stanley R. Mickelsen Safeguard Complex, Perimeter Acquisition Radar Building, Limited Access Area, between Limited Access Patrol Road & Service Road A, Nekoma, Cavalier County, ND

  9. Dumand-array data-acquisition system

    SciTech Connect

    Brenner, A.E.; Theriot, D.; Dau, W.D.; Geelhood, B.D.; Harris, F.; Learned, J.G.; Stenger, V.; March, R.; Roos, C.; Shumard, E.

    1982-04-01

    An overall data acquisition approach for DUMAND is described. The scheme assumes one array to shore optical fiber transmission line for each string of the array. The basic event sampling period is approx. 13 ..mu..sec. All potentially interesting data is transmitted to shore where the major processing is performed.

  10. 48 CFR 215.404 - Proposal analysis.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false Proposal analysis. 215.404 Section 215.404 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT... Proposal analysis....

  11. 48 CFR 215.404 - Proposal analysis.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Proposal analysis. 215.404 Section 215.404 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT... Proposal analysis....

  12. 48 CFR 215.404 - Proposal analysis.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Proposal analysis. 215.404 Section 215.404 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT... Proposal analysis....

  13. 48 CFR 215.404 - Proposal analysis.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Proposal analysis. 215.404 Section 215.404 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT... Proposal analysis....

  14. 48 CFR 215.404 - Proposal analysis.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Proposal analysis. 215.404 Section 215.404 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT... Proposal analysis....

  15. Efficient lossy compression for compressive sensing acquisition of images in compressive sensing imaging systems.

    PubMed

    Li, Xiangwei; Lan, Xuguang; Yang, Meng; Xue, Jianru; Zheng, Nanning

    2014-12-05

    Compressive Sensing Imaging (CSI) is a new framework for image acquisition, which enables the simultaneous acquisition and compression of a scene. Since the characteristics of Compressive Sensing (CS) acquisition are very different from traditional image acquisition, the general image compression solution may not work well. In this paper, we propose an efficient lossy compression solution for CS acquisition of images by considering the distinctive features of the CSI. First, we design an adaptive compressive sensing acquisition method for images according to the sampling rate, which could achieve better CS reconstruction quality for the acquired image. Second, we develop a universal quantization for the obtained CS measurements from CS acquisition without knowing any a priori information about the captured image. Finally, we apply these two methods in the CSI system for efficient lossy compression of CS acquisition. Simulation results demonstrate that the proposed solution improves the rate-distortion performance by 0.4~2 dB comparing with current state-of-the-art, while maintaining a low computational complexity.

  16. Efficient Lossy Compression for Compressive Sensing Acquisition of Images in Compressive Sensing Imaging Systems

    PubMed Central

    Li, Xiangwei; Lan, Xuguang; Yang, Meng; Xue, Jianru; Zheng, Nanning

    2014-01-01

    Compressive Sensing Imaging (CSI) is a new framework for image acquisition, which enables the simultaneous acquisition and compression of a scene. Since the characteristics of Compressive Sensing (CS) acquisition are very different from traditional image acquisition, the general image compression solution may not work well. In this paper, we propose an efficient lossy compression solution for CS acquisition of images by considering the distinctive features of the CSI. First, we design an adaptive compressive sensing acquisition method for images according to the sampling rate, which could achieve better CS reconstruction quality for the acquired image. Second, we develop a universal quantization for the obtained CS measurements from CS acquisition without knowing any a priori information about the captured image. Finally, we apply these two methods in the CSI system for efficient lossy compression of CS acquisition. Simulation results demonstrate that the proposed solution improves the rate-distortion performance by 0.4∼2 dB comparing with current state-of-the-art, while maintaining a low computational complexity. PMID:25490597

  17. Data acquisition system for operational earth observation missions

    NASA Technical Reports Server (NTRS)

    Deerwester, J. M.; Alexander, D.; Arno, R. D.; Edsinger, L. E.; Norman, S. M.; Sinclair, K. F.; Tindle, E. L.; Wood, R. D.

    1972-01-01

    The data acquisition system capabilities expected to be available in the 1980 time period as part of operational Earth observation missions are identified. By data acquisition system is meant the sensor platform (spacecraft or aircraft), the sensors themselves and the communication system. Future capabilities and support requirements are projected for the following sensors: film camera, return beam vidicon, multispectral scanner, infrared scanner, infrared radiometer, microwave scanner, microwave radiometer, coherent side-looking radar, and scatterometer.

  18. A data acquisition system for marine and ecological research.

    NASA Technical Reports Server (NTRS)

    Johnson, R. A.

    1971-01-01

    Description of a self-contained portable data acquisition system for use in marine and ecological research. The compact lightweight data acquisition system is capable of recording 14 variables in its present configuration and is suitable for use in either a boat, pickup truck, or light aircraft. This system will provide the acquisition of reliable data on the structure of the environment and the effect of man-made and natural activities on the observed phenomenon. Utilizing both self-contained analog recording and a telemetry transmitter for real-time digital readout and recording, the prototype system has undergone extensive testing. Currently undergoing component performance upgrading, the prototype system has been utilized in several environmental science investigations associated with air pollution investigations and weather modification and is currently being used for marine data acquisition.

  19. Harpoon-based sample Acquisition System

    NASA Astrophysics Data System (ADS)

    Bernal, Javier; Nuth, Joseph; Wegel, Donald

    2012-02-01

    Acquiring information about the composition of comets, asteroids, and other near Earth objects is very important because they may contain the primordial ooze of the solar system and the origins of life on Earth. Sending a spacecraft is the obvious answer, but once it gets there it needs to collect and analyze samples. Conceptually, a drill or a shovel would work, but both require something extra to anchor it to the comet, adding to the cost and complexity of the spacecraft. Since comets and asteroids are very low gravity objects, drilling becomes a problem. If you do not provide a grappling mechanism, the drill would push the spacecraft off the surface. Harpoons have been proposed as grappling mechanisms in the past and are currently flying on missions such as ROSETTA. We propose to use a hollow, core sampling harpoon, to act as the anchoring mechanism as well as the sample collecting device. By combining these two functions, mass is reduced, more samples can be collected and the spacecraft can carry more propellant. Although challenging, returning the collected samples to Earth allows them to be analyzed in laboratories with much greater detail than possible on a spacecraft. Also, bringing the samples back to Earth allows future generations to study them.

  20. Course Ontology-Based User's Knowledge Requirement Acquisition from Behaviors within E-Learning Systems

    ERIC Educational Resources Information Center

    Zeng, Qingtian; Zhao, Zhongying; Liang, Yongquan

    2009-01-01

    User's knowledge requirement acquisition and analysis are very important for a personalized or user-adaptive learning system. Two approaches to capture user's knowledge requirement about course content within an e-learning system are proposed and implemented in this paper. The first approach is based on the historical data accumulated by an…

  1. The data acquisition system for the ANTARES neutrino telescope

    NASA Astrophysics Data System (ADS)

    Aguilar, J. A.; Albert, A.; Ameli, F.; Anghinolfi, M.; Anton, G.; Anvar, S.; Aslanides, E.; Aubert, J.-J.; Barbarito, E.; Basa, S.; Battaglieri, M.; Becherini, Y.; Bellotti, R.; Beltramelli, J.; Bertin, V.; Bigi, A.; Billault, M.; Blaes, R.; de Botton, N.; Bouwhuis, M. C.; Bradbury, S. M.; Bruijn, R.; Brunner, J.; Burgio, G. F.; Busto, J.; Cafagna, F.; Caillat, L.; Calzas, A.; Capone, A.; Caponetto, L.; Carmona, E.; Carr, J.; Cartwright, S. L.; Castel, D.; Castorina, E.; Cavasinni, V.; Cecchini, S.; Ceres, A.; Charvis, P.; Chauchot, P.; Chiarusi, T.; Circella, M.; Colnard, C.; Compère, C.; Coniglione, R.; Cottini, N.; Coyle, P.; Cuneo, S.; Cussatlegras, A.-S.; Damy, G.; van Dantzig, R.; de Marzo, C.; Dekeyser, I.; Delagnes, E.; Denans, D.; Deschamps, A.; Dessages-Ardellier, F.; Destelle, J.-J.; Dinkespieler, B.; Distefano, C.; Donzaud, C.; Drogou, J.-F.; Druillole, F.; Durand, D.; Ernenwein, J.-P.; Escoffier, S.; Falchini, E.; Favard, S.; Feinstein, F.; Ferry, S.; Festy, D.; Fiorello, C.; Flaminio, V.; Galeotti, S.; Gallone, J.-M.; Giacomelli, G.; Girard, N.; Gojak, C.; Goret, Ph.; Graf, K.; Hallewell, G.; Harakeh, M. N.; Hartmann, B.; Heijboer, A.; Heine, E.; Hello, Y.; Hernández-Rey, J. J.; Hößl, J.; Hoffman, C.; Hogenbirk, J.; Hubbard, J. R.; Jaquet, M.; Jaspers, M.; de Jong, M.; Jouvenot, F.; Kalantar-Nayestanaki, N.; Kappes, A.; Karg, T.; Karkar, S.; Katz, U.; Keller, P.; Kok, H.; Kooijman, P.; Kopper, C.; Korolkova, E. V.; Kouchner, A.; Kretschmer, W.; Kruijer, A.; Kuch, S.; Kudryavstev, V. A.; Lachartre, D.; Lafoux, H.; Lagier, P.; Lahmann, R.; Lamanna, G.; Lamare, P.; Languillat, J. C.; Laschinsky, H.; Le Guen, Y.; Le Provost, H.; Le van Suu, A.; Legou, T.; Lim, G.; Lo Nigro, L.; Lo Presti, D.; Loehner, H.; Loucatos, S.; Louis, F.; Lucarelli, F.; Lyashuk, V.; Marcelin, M.; Margiotta, A.; Masullo, R.; Mazéas, F.; Mazure, A.; McMillan, J. E.; Megna, R.; Melissas, M.; Migneco, E.; Milovanovic, A.; Mongelli, M.; Montaruli, T.; Morganti, M.; Moscoso, L.; Musumeci, M.; Naumann, C.; Naumann-Godo, M.; Niess, V.; Olivetto, C.; Ostasch, R.; Palanque-Delabrouille, N.; Payre, P.; Peek, H.; Petta, C.; Piattelli, P.; Pineau, J.-P.; Poinsignon, J.; Popa, V.; Pradier, T.; Racca, C.; Randazzo, N.; van Randwijk, J.; Real, D.; van Rens, B.; Réthoré, F.; Rewiersma, P.; Riccobene, G.; Rigaud, V.; Ripani, M.; Roca, V.; Roda, C.; Rolin, J. F.; Romita, M.; Rose, H. J.; Rostovtsev, A.; Roux, J.; Ruppi, M.; Russo, G. V.; Salesa, F.; Salomon, K.; Sapienza, P.; Schmitt, F.; Schuller, J.-P.; Shanidze, R.; Sokalski, I.; Spona, T.; Spurio, M.; van der Steenhoven, G.; Stolarczyk, T.; Streeb, K.; Stubert, D.; Sulak, L.; Taiuti, M.; Tamburini, C.; Tao, C.; Terreni, G.; Thompson, L. F.; Valdy, P.; Valente, V.; Vallage, B.; Venekamp, G.; Verlaat, B.; Vernin, P.; de Vita, R.; de Vries, G.; van Wijk, R.; de Witt Huberts, P.; Wobbe, G.; de Wolf, E.; Yao, A.-F.; Zaborov, D.; Zaccone, H.; Zornoza, J. D.; Zúñiga, J.

    2007-01-01

    The ANTARES neutrino telescope is being constructed in the Mediterranean Sea. It consists of a large three-dimensional array of photo-multiplier tubes. The data acquisition system of the detector takes care of the digitisation of the photo-multiplier tube signals, data transport, data filtering, and data storage. The detector is operated using a control program interfaced with all elements. The design and the implementation of the data acquisition system are described.

  2. Electronics and data acquisition system for the ICAL prototype detector of India-based neutrino observatory

    NASA Astrophysics Data System (ADS)

    Behere, A.; Bhuyan, M.; Chandratre, V. B.; Dasgupta, S.; Datar, V. M.; Kalmani, S. D.; Lahamge, S. M.; Mondal, N. K.; Mukhopadhyay, P. K.; Nagaraj, P.; Nagesh, B. K.; Pal, S.; Rao, Shobha K.; Samuel, D.; Saraf, M. N.; Satyanarayana, B.; Shastrakar, R. S.; Shinde, R. R.; Sudheer, K. M.; Upadhya, S. S.; Verma, P.

    2013-02-01

    The India-based Neutrino Observatory (INO) collaboration has proposed to build a 50 kton magnetized Iron Calorimeter (ICAL) detector with the primary goal to study neutrino oscillations, employing Resistive Plate Chambers (RPCs) as active detector elements. A prototype of the ICAL detector has been built in order to develop and characterize the intrinsic sub-systems, like RPCs, gas system, electronics and data acquisition system, etc. This paper describes in detail the readout electronics as well as the VME-based data acquisition system for the prototype detector.

  3. Free-space laser communication system with rapid acquisition based on astronomical telescopes.

    PubMed

    Wang, Jianmin; Lv, Junyi; Zhao, Guang; Wang, Gang

    2015-08-10

    The general structure of a free-space optical (FSO) communication system based on astronomical telescopes is proposed. The light path for astronomical observation and for communication can be easily switched. A separate camera is used as a star sensor to determine the pointing direction of the optical terminal's antenna. The new system exhibits rapid acquisition and is widely applicable in various astronomical telescope systems and wavelengths. We present a detailed analysis of the acquisition time, which can be decreased by one order of magnitude compared with traditional optical communication systems. Furthermore, we verify software algorithms and tracking accuracy. PMID:26367918

  4. Free-space laser communication system with rapid acquisition based on astronomical telescopes.

    PubMed

    Wang, Jianmin; Lv, Junyi; Zhao, Guang; Wang, Gang

    2015-08-10

    The general structure of a free-space optical (FSO) communication system based on astronomical telescopes is proposed. The light path for astronomical observation and for communication can be easily switched. A separate camera is used as a star sensor to determine the pointing direction of the optical terminal's antenna. The new system exhibits rapid acquisition and is widely applicable in various astronomical telescope systems and wavelengths. We present a detailed analysis of the acquisition time, which can be decreased by one order of magnitude compared with traditional optical communication systems. Furthermore, we verify software algorithms and tracking accuracy.

  5. 76 FR 71464 - Defense Federal Acquisition Regulation Supplement; Transition to the System for Award Management...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-18

    ... Integrated Acquisition Environment systems to the new System for Award Management architecture. DATES.... SUPPLEMENTARY INFORMATION: I. Background The Integrated Acquisition Environment (IAE) is an...

  6. Reducing acquisition risk through integrated systems of systems engineering

    NASA Astrophysics Data System (ADS)

    Gross, Andrew; Hobson, Brian; Bouwens, Christina

    2016-05-01

    In the fall of 2015, the Joint Staff J7 (JS J7) sponsored the Bold Quest (BQ) 15.2 event and conducted planning and coordination to combine this event into a joint event with the Army Warfighting Assessment (AWA) 16.1 sponsored by the U.S. Army. This multipurpose event combined a Joint/Coalition exercise (JS J7) with components of testing, training, and experimentation required by the Army. In support of Assistant Secretary of the Army for Acquisition, Logistics, and Technology (ASA(ALT)) System of Systems Engineering and Integration (SoSE&I), Always On-On Demand (AO-OD) used a system of systems (SoS) engineering approach to develop a live, virtual, constructive distributed environment (LVC-DE) to support risk mitigation utilizing this complex and challenging exercise environment for a system preparing to enter limited user test (LUT). AO-OD executed a requirements-based SoS engineering process starting with user needs and objectives from Army Integrated Air and Missile Defense (AIAMD), Patriot units, Coalition Intelligence, Surveillance and Reconnaissance (CISR), Focused End State 4 (FES4) Mission Command (MC) Interoperability with Unified Action Partners (UAP), and Mission Partner Environment (MPE) Integration and Training, Tactics and Procedures (TTP) assessment. The SoS engineering process decomposed the common operational, analytical, and technical requirements, while utilizing the Institute of Electrical and Electronics Engineers (IEEE) Distributed Simulation Engineering and Execution Process (DSEEP) to provide structured accountability for the integration and execution of the AO-OD LVC-DE. As a result of this process implementation, AO-OD successfully planned for, prepared, and executed a distributed simulation support environment that responsively satisfied user needs and objectives, demonstrating the viability of an LVC-DE environment to support multiple user objectives and support risk mitigation activities for systems in the acquisition process.

  7. 77 FR 187 - Federal Acquisition Regulation; Transition to the System for Award Management (SAM)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-03

    ... pertaining to three procurement systems included in the Integrated Acquisition Environment--the Central... Certifications Application. These three Integrated Acquisition Environment systems and the Disaster Response.... Background The Integrated Acquisition Environment (IAE) is an electronic- Government initiative. The IAE...

  8. Review of Supervisory Control and Data Acquisition (SCADA) Systems

    SciTech Connect

    Reva Nickelson; Briam Johnson; Ken Barnes

    2004-01-01

    A review using open source information was performed to obtain data related to Supervisory Control and Data Acquisition (SCADA) systems used to supervise and control domestic electric power generation, transmission, and distribution. This report provides the technical details for the types of systems used, system disposal, cyber and physical security measures, network connections, and a gap analysis of SCADA security holes.

  9. Review of digital fingerprint acquisition systems and wavelet compression

    NASA Astrophysics Data System (ADS)

    Hopper, Thomas

    2003-04-01

    Over the last decade many criminal justice agencies have replaced their fingerprint card based systems with electronic processing. We examine these new systems and find that image acquisition to support the identification application is consistently a challenge. Image capture and compression are widely dispersed and relatively new technologies within criminal justice information systems. Image quality assurance programs are just beginning to mature.

  10. An intelligent data acquisition system for fluid mechanics research

    NASA Technical Reports Server (NTRS)

    Cantwell, E. R.; Zilliac, G.; Fukunishi, Y.

    1989-01-01

    This paper describes a novel data acquisition system for use with wind-tunnel probe-based measurements, which incorporates a degree of specific fluid dynamics knowledge into a simple expert system-like control program. The concept was developed with a rudimentary expert system coupled to a probe positioning mechanism operating in a small-scale research wind tunnel. The software consisted of two basic elements, a general-purpose data acquisition system and the rulebased control element to take and analyze data and supplying decisions as to where to measure, how many data points to take, and when to stop. The system was validated in an experiment involving a vortical flow field, showing that it was possible to increase the resolution of the experiment or, alternatively, reduce the total number of data points required, to achieve parity with the results of most conventional data acquisition approaches.

  11. A study of the environmental information acquisition system based on smart phones

    NASA Astrophysics Data System (ADS)

    Xu, Lingyan; Chen, Feixiang; Ni, Shaoliang; Wang, Ling; Wei, Chao; Gong, Bowen

    2010-08-01

    In this paper, it proposed a new environmental information acquisition system based on smart phones (Smartphone / Pocket PC) which combined with Geographic Information System (GIS), Global Positioning System (GPS), wireless communication technology in allusion to the current actual situation of environmental protection information acquisition in city environmental protection department. System architecture and working principle is analyzed, and it designs the main modules of the software and hardware. In addition, transport protocols and application of the implementation method have been discussed. Experiments show that the environmental information acquisition system has high precision, easy to use, information transfer with high efficiency and reliability. Not only have that, the paper also discusses the effective strategies of network transmission of data encryption and the image transmission rate improvement. In brief, it can effectively enhance the work efficiency of the city environmental protection department when they collect relevant information.

  12. Uplink coarse acquisition for a mobile user satellite system

    NASA Astrophysics Data System (ADS)

    Biederman, L.

    For the purpose of the present investigation, coarse time acquisition is defined as the time required to receive a successful acknowledgement from the satellite. This definition can be justified if the false alarm probability is selected to be relatively low. It is assumed that the ground platforms are mobile, the uplink signal is frequently hopped, and all users have a preassigned uplink time synchronization channel. Attention is given to acquisition algorithm and system concept, the optimum detector structure, aspects of optimum detector performance, and coarse acquisition performance tradeoffs. For the optimum choice, the detector performance is shown as a function of the number of hops accumulated by the video integrator. It is found that the coarse acquisition detector performance could be severely degraded if the uplink signal-to-noise ratio drops by more than 1 dB below the threshold requirement.

  13. A High Performance Virtualized Seismic Data Acquisition System

    NASA Astrophysics Data System (ADS)

    Davis, G. A.; Eakins, J. A.; Reyes, J. C.; Franke, M.; Sánchez, R. F.; Cortes Muñoz, P.; Busby, R. W.; Vernon, F.; Barrientos, S. E.

    2014-12-01

    As part of a collaborative effort with the Incorporated Research Institutions for Seismology, a virtualized seismic data acquisition and processing system was recently installed at the Centro Sismológical Nacional (CSN) at the Universidad de Chile for use as part of their early warning system. Using lessons learned from the Earthscope Transportable Array project, the design of this system consists of dedicated acquisition, processing and data distribution nodes hosted on a high availability hypervisor cluster. Data is exchanged with the IRIS Data Management Center and the existing processing infrastructure at the CSN. The processing nodes are backed by 20 TB of hybrid Solid State Disk (SSD) and spinning disk storage with automatic tiering of data between the disks. As part of the installation, best practices for station metadata maintenance were discussed and applied to the existing IRIS sponsored stations, as well as over 30 new stations being added to the early warning network. Four virtual machines (VM) were configured with distinctive tasks. Two VMs are dedicated to data acquisition, one to the real-time data processing, and one as relay between data acquisition and processing systems with services for the existing earthquake revision and dissemination infrastructure. The first acquisition system connects directly to Basalt dataloggers and Q330 digitizers, managing them, and acquiring seismic data as well as state-of-health (SOH) information. As newly deployed stations become available (beyond the existing 30), this VM is configured to acquire data from them and incorporate the additonal data. The second acquisition system imports the legacy network of CSN and data streams provided by other data centers. The processing system is connected to the production and archive databases. The relay system merges all incoming data streams and obtains the processing results. Data and processing packets are available for subsequent review and dissemination by the CSN. Such

  14. 75 FR 76692 - Defense Federal Acquisition Regulation Supplement; Business Systems-Definition and Administration...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-09

    ... (DFARS Case 2009-D038) in the Federal Register on January 15, 2010 (75 FR 2457). The public comment... rule, DoD published a second proposed rule with request for comments on December 3, 2010 (75 FR 75550... Federal Acquisition Regulation Supplement; Business Systems--Definition and Administration (DFARS...

  15. A System for English Vocabulary Acquisition Based on Code-Switching

    ERIC Educational Resources Information Center

    Mazur, Michal; Karolczak, Krzysztof; Rzepka, Rafal; Araki, Kenji

    2016-01-01

    Vocabulary plays an important part in second language learning and there are many existing techniques to facilitate word acquisition. One of these methods is code-switching, or mixing the vocabulary of two languages in one sentence. In this paper the authors propose an experimental system for computer-assisted English vocabulary learning in…

  16. The UCR gamma ray telescope data acquisition system

    NASA Technical Reports Server (NTRS)

    O'Neill, T. J.; Sweeney, W. E.; Tumer, O. T.; Zych, A. D.; White, R. S.

    1988-01-01

    A description is given of an electronics system based on the DEC Falcon SBC-11/23+, which has been designed and built to support a balloon-borne double Compton gamma-ray telescope. The system provides support for commands, data acquisition, data routing and compression, and photomultiplier tube gain control. The software consists of a number of interrupt-driven routines of differing priorities to handle each system task. This includes two circular buffers for onboard processing and bit encoding before transmission of the information to the ground computer. Acquisition of gamma-ray events at rates above the 200-Hz telemetry constraint is easily achieved.

  17. Migrating Legacy Systems in the Global Merger & Acquisition Environment

    ERIC Educational Resources Information Center

    Katerattanakul, Pairin; Kam, Hwee-Joo; Lee, James J.; Hong, Soongoo

    2009-01-01

    The MetaFrame system migration project at WorldPharma, while driven by merger and acquisition, had faced complexities caused by both technical challenges and organizational issues in the climate of uncertainties. However, WorldPharma still insisted on instigating this post-merger system migration project. This project served to (1) consolidate the…

  18. The ATLAS Data Acquisition and High Level Trigger system

    NASA Astrophysics Data System (ADS)

    The ATLAS TDAQ Collaboration

    2016-06-01

    This paper describes the data acquisition and high level trigger system of the ATLAS experiment at the Large Hadron Collider at CERN, as deployed during Run 1. Data flow as well as control, configuration and monitoring aspects are addressed. An overview of the functionality of the system and of its performance is presented and design choices are discussed.

  19. Internal Control, Auditing, and the Automated Acquisitions System.

    ERIC Educational Resources Information Center

    Hawks, Carol Pitts

    1990-01-01

    Discusses issues and procedures involved in auditing the automated acquisitions system at Ohio State University Libraries. The audit process is explained, internal controls within the system are identified, general control mechanisms such as limited electronic access are discussed, and application control mechanisms that relate to specific…

  20. Data-Acquisition System With Remotely Adjustable Amplifiers

    NASA Technical Reports Server (NTRS)

    Nurge, Mark A.; Larson, William E.; Hallberg, Carl G.; Thayer, Steven W.; Ake, Jeffrey C.; Gleman, Stuart M.; Thompson, David L.; Medelius, Pedro J.; Crawford, Wayne A.; Vangilder, Richard M.; Kerce, Johnny L.; Fairbanks, Joey S.

    1994-01-01

    Improved data-acquisition system has both centralized and decentralized characteristics developed. Provides infrastructure for automation and standardization of operation, maintenance, calibration, and adjustment of many transducers. Increases efficiency by reducing need for diminishing work force of highly trained technicians to perform routine tasks. Large industrial and academic laboratory facilities benefit from systems like this one.

  1. College Bibliocentre Acquisition and Accounting System Description Manual.

    ERIC Educational Resources Information Center

    College Bibliocentre, Don Mills (Ontario).

    The Acquisition and Accounting System is a complex designed to perform all functions in the following areas: (1) ordering; (2) receipt, shipment and cancellation; (3) accounts payable, (4) invoicing, (5) order status, (6) inventory, (7) college budgeting and (8) management information reports. Some of the benefits that accrue from the system are:…

  2. 360-degree dense multiview image acquisition system using time multiplexing

    NASA Astrophysics Data System (ADS)

    Yendo, Tomohiro; Fujii, Toshiaki; Panahpour Tehrani, Mehrdad; Tanimoto, Masayuki

    2010-02-01

    A novel 360-degree 3D image acquisition system that captures multi-view images with narrow view interval is proposed. The system consists of a scanning optics system and a high-speed camera. The scanning optics system is composed of a double-parabolic mirror shell and a rotating flat mirror tilted at 45 degrees to the horizontal plane. The mirror shell produces a real image of an object that is placed at the bottom of the shell. The mirror shell is modified from usual system which is used as 3D illusion toy so that the real image can be captured from right horizontal viewing direction. The rotating mirror in the real image reflects the image to the camera-axis direction. The reflected image observed from the camera varies according to the angle of the rotating mirror. This means that the camera can capture the object from various viewing directions that are determined by the angle of the rotating mirror. To acquire the time-varying reflected images, we use a high-speed camera that is synchronized with the angle of the rotating mirror. We have used a high-speed camera which resolution is 256×256 and the maximum frame rate is 10000fps at the resolution. Rotating speed of the tilted flat mirror is about 27 rev./sec. The number of views is 360. The focus length of parabolic mirrors is 73mm and diameter is 360mm. Objects which length is less than about 30mm can be acquired. Captured images are compensated rotation and distortion caused by double-parabolic mirror system, and reproduced as 3D moving images by Seelinder display.

  3. Two Demonstrations with a New Data-Acquisition System

    NASA Astrophysics Data System (ADS)

    Kraftmakher, Yaakov

    2014-03-01

    Nowadays, the use of data-acquisition systems in undergraduate laboratories is routine. Many computer-assisted experiments became possible with the PASCO scientific data-acquisition system based on the 750 Interface and DataStudio software. A new data-acquisition system developed by PASCO includes the 850 Universal Interface and Capstone software. The new interface is much more powerful than previous ones from PASCO, while the new software provides many additional options for processing experimental data.2 The two demonstrations described below use the sweep frequency option, which is now available. By specifying the initial and final frequencies and the sweep time, this option makes possible the determination of the frequency response of any frequency-dependent device. The first demonstration shows the electromagnetic screening by metals and can serve as an introduction to studies of the eddy currents and skin effect in conductors. The second demonstration shows the resonance curves of an LCR circuit.

  4. 48 CFR 3046.790 - Use of warranties in major systems acquisitions by the USCG (USCG).

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... DEPARTMENT OF HOMELAND SECURITY, HOMELAND SECURITY ACQUISITION REGULATION (HSAR) CONTRACT MANAGEMENT QUALITY ASSURANCE Warranties 3046.790 Use of warranties in major systems acquisitions by the USCG (USCG)....

  5. 48 CFR 3046.790 - Use of warranties in major systems acquisitions by the USCG (USCG).

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... DEPARTMENT OF HOMELAND SECURITY, HOMELAND SECURITY ACQUISITION REGULATION (HSAR) CONTRACT MANAGEMENT QUALITY ASSURANCE Warranties 3046.790 Use of warranties in major systems acquisitions by the USCG (USCG)....

  6. Study and design of a cryogenic propellant acquisition system

    NASA Technical Reports Server (NTRS)

    Burge, G. W.; Blackmon, J. B.

    1973-01-01

    The development of an acquisition system for supplying subcooled liquid hydrogen and liquid oxygen under in-orbit conditions is discussed. The system will be applied to the integrated cryogenic feed requirements for space systems such as a space shuttle cryogenic auxiliary propulsion system (APS) and main propulsion for an advanced spacecraft propulsion module (ASPM). Concepts that use the favorable surface tension characteristics of fine mesh screens are emphasized. The specific objectives of the program are: (1) to evolve conceptual designs for candidate acquisition systems, (2) to formulate the analytical models needed to analyze the systems, and (3) to generate parametric data on overall candidate system performance, characteristics, and operational features in sufficient depth to establish critical design problems and criteria to support a sound system design and evaluation.

  7. An Overview of Advanced Data Acquisition System (ADAS)

    NASA Technical Reports Server (NTRS)

    Mata, Carlos T.; Steinrock, T. (Technical Monitor)

    2001-01-01

    The paper discusses the following: 1. Historical background. 2. What is ADAS? 3. R and D status. 4. Reliability/cost examples (1, 2, and 3). 5. What's new? 6. Technical advantages. 7. NASA relevance. 8. NASA plans/options. 9. Remaining R and D. 10. Applications. 11. Product benefits. 11. Commercial advantages. 12. intellectual property. Aerospace industry requires highly reliable data acquisition systems. Traditional Acquisition systems employ end-to-end hardware and software redundancy. Typically, redundancy adds weight, cost, power consumption, and complexity.

  8. Waste retrieval sluicing system data acquisition system acceptance test report

    SciTech Connect

    Bevins, R.R.

    1998-07-31

    This document describes the test procedure for the Project W-320 Tank C-106 Sluicing Data Acquisition System (W-320 DAS). The Software Test portion will test items identified in the WRSS DAS System Description (SD), HNF-2115. Traceability to HNF-2115 will be via a reference that follows in parenthesis, after the test section title. The Field Test portion will test sensor operability, analog to digital conversion, and alarm setpoints for field instrumentation. The W-320 DAS supplies data to assist thermal modeling of tanks 241-C-106 and 241-AY-102. It is designed to be a central repository for information from sources that would otherwise have to be read, recorded, and integrated manually. Thus, completion of the DAS requires communication with several different data collection devices and output to a usable PC data formats. This test procedure will demonstrate that the DAS functions as required by the project requirements stated in Section 3 of the W-320 DAS System Description, HNF-2115.

  9. Workshop on data acquisition and trigger system simulations for high energy physics

    SciTech Connect

    1992-12-31

    This report discusses the following topics: DAQSIM: A data acquisition system simulation tool; Front end and DCC Simulations for the SDC Straw Tube System; Simulation of Non-Blocklng Data Acquisition Architectures; Simulation Studies of the SDC Data Collection Chip; Correlation Studies of the Data Collection Circuit & The Design of a Queue for this Circuit; Fast Data Compression & Transmission from a Silicon Strip Wafer; Simulation of SCI Protocols in Modsim; Visual Design with vVHDL; Stochastic Simulation of Asynchronous Buffers; SDC Trigger Simulations; Trigger Rates, DAQ & Online Processing at the SSC; Planned Enhancements to MODSEM II & SIMOBJECT -- an Overview -- R.; DAGAR -- A synthesis system; Proposed Silicon Compiler for Physics Applications; Timed -- LOTOS in a PROLOG Environment: an Algebraic language for Simulation; Modeling and Simulation of an Event Builder for High Energy Physics Data Acquisition Systems; A Verilog Simulation for the CDF DAQ; Simulation to Design with Verilog; The DZero Data Acquisition System: Model and Measurements; DZero Trigger Level 1.5 Modeling; Strategies Optimizing Data Load in the DZero Triggers; Simulation of the DZero Level 2 Data Acquisition System; A Fast Method for Calculating DZero Level 1 Jet Trigger Properties and Physics Input to DAQ Studies.

  10. [External contour acquisition system for radiotherapy: an original solution].

    PubMed

    Létourneau, D; Brochet, F; Bohémier, R; Gagnon, J

    2000-01-01

    A contour acquisition system has been designed in radiotherapy at the Sagamie Hospital complex (Chicoutimi, Québec) to measure the external contours of the patients who do not need a CT exam. This measuring system can produce transversal, sagittal or coronal patient contours in the treatment position. The absolute accuracy of the system is +/- 1 mm. The contours produced by this equipment can be transferred electronically or on paper to the planning system.

  11. Distributed data acquisition system for Pachmarhi array of Cverenkov telescopes

    NASA Astrophysics Data System (ADS)

    Upadhya, S. S.; Acharya, B. S.; Bhat, P. N.; Chitnis, V. R.; D'Souza, A. I.; Francis, P. J.; Gothe, K. S.; Joshi, S. R.; Majumdar, P.; Manogaran, M.; Nagesh, B. K.; Pose, M. S.; Purohit, P. N.; Rahman, M. A.; Rao, K. K.; Rao, S. K.; Sharma, S. K.; Singh, B. B.; Stanislaus, A. J.; Sudersanan, P. V.; Venkatesh Murthy, B. L.; Vishwanath, P. R.

    2002-03-01

    Pachmarhi Array of Cverenkov Telescopes consists of 25 Telescopes distributed within an area of 8000m2. The array was designed to detect and process faint Cverenkov light flashes that lasts for a few nanoseconds, produced in the atmosphere by celestial VHE ?-rays or cosmic rays. In this experiment, the arrival time and amplitude of fast tiny pulses have to be measured and recorded from each of 175 photo-tubes in a shortest possible time. In view of the complexity of the system, the entire array is divided into 4 sectors. A Distributed Data Acquisition System developed for the purpose consists of independent Sector Data Acquisition Systems and a Master Data Acquisition System. The distributed data acquisition and monitoring system are built using PC's which are networked through LAN. The entire software for DDAS was developed in-house in C language under LINUX environment. Also, most of the hardware barring a few fast digitization modules were designed and fabricated in-house. The design features, implementation strategy as well as the performance of the whole system are discussed.

  12. 78 FR 64482 - Proposed Collection; Comment Request

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-29

    ...: Defense Acquisition University, Student Information System (SIS); OMB Control Number 0704- TBD. Needs and... of the Secretary Proposed Collection; Comment Request AGENCY: Defense Acquisition University, DoD..., the Defense Acquisition University announces a proposed public information collection and seeks...

  13. 75 FR 38088 - Proposed Collection; Comment Request

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-01

    ... Acquisition University, Student Information System (SIS); OMB Control Number 0704- TBD. Needs and Uses: The... of the Secretary Proposed Collection; Comment Request AGENCY: Defense Acquisition University, DOD..., the Defense Acquisition University announces a proposed public information collection and seeks...

  14. Implementation of High Speed Distributed Data Acquisition System

    NASA Astrophysics Data System (ADS)

    Raju, Anju P.; Sekhar, Ambika

    2012-09-01

    This paper introduces a high speed distributed data acquisition system based on a field programmable gate array (FPGA). The aim is to develop a "distributed" data acquisition interface. The development of instruments such as personal computers and engineering workstations based on "standard" platforms is the motivation behind this effort. Using standard platforms as the controlling unit allows independence in hardware from a particular vendor and hardware platform. The distributed approach also has advantages from a functional point of view: acquisition resources become available to multiple instruments; the acquisition front-end can be physically remote from the rest of the instrument. High speed data acquisition system transmits data faster to a remote computer system through Ethernet interface. The data is acquired through 16 analog input channels. The input data commands are multiplexed and digitized and then the data is stored in 1K buffer for each input channel. The main control unit in this design is the 16 bit processor implemented in the FPGA. This 16 bit processor is used to set up and initialize the data source and the Ethernet controller, as well as control the flow of data from the memory element to the NIC. Using this processor we can initialize and control the different configuration registers in the Ethernet controller in a easy manner. Then these data packets are sending to the remote PC through the Ethernet interface. The main advantages of the using FPGA as standard platform are its flexibility, low power consumption, short design duration, fast time to market, programmability and high density. The main advantages of using Ethernet controller AX88796 over others are its non PCI interface, the presence of embedded SRAM where transmit and reception buffers are located and high-performance SRAM-like interface. The paper introduces the implementation of the distributed data acquisition using FPGA by VHDL. The main advantages of this system are high

  15. Self contained data acquisition apparatus and system

    SciTech Connect

    Kupersmit, C.A.

    1987-06-09

    This patent describes an improved monitoring and control system for use with an industrial system where a process is carried out within a production environmental zone with the utilization of switching monitors and actuators with energizable loads coupled by a multiplicity of field wires to a control station, comprising: an environmentally secure housing positionable within the zone; switching input process interface means substantially positioned within the housing, including switch interface means connectable by field wiring with the switching monitors for deriving data signals and for evaluating the performance of the switching monitors and associated the field wiring to derive switching input status signals.

  16. An advanced data-acquisition system for wind energy projects

    SciTech Connect

    Simms, D.A. ); Cousineau, K.L. )

    1992-10-01

    NREL has subcontracted with Zond Systems, Inc. to develop an advanced data-acquisition system (ADAS) for wind energy projects. The ADAS can be used to simplify the process of making accurate measurements and analyzing. The system utilizes state-of-the-art electronics and telemetry to provide distributed multi-source, multi-channel data acquisition. Local stand-alone microprocessor-based data acquisition modules (DAMs) can be located near sources of measurement. These allow analog data values to be digitized close to the measurement source, thus eliminating the need for long data runs and slip rings. Signals from digital sensors and transducers can also be directly input to the local DAMS. A PC-based ground station is used to coordinate data transmission to and from all remote DAMS, display real-time values, archive data sets, and process and analyze results. The system is capable of acquiring synchronized time-series data from sensors and transducers under a variety of test configurations in an operational wind-park environment. Data acquisition needs of the wind industry differ significantly from those of most other technologies. Most conventional system designs do not handle data coming from multiple distributed sources, nor do they provide telemetry or the ability to mesh multiple incoming digital data streams. This paper describes the capabilities of the ADAS, and how its design and cost objectives are geared to meet anticipated US wind industry needs.

  17. New iron acquisition system in Bacteroidetes.

    PubMed

    Manfredi, Pablo; Lauber, Frédéric; Renzi, Francesco; Hack, Katrin; Hess, Estelle; Cornelis, Guy R

    2015-01-01

    Capnocytophaga canimorsus, a dog mouth commensal and a member of the Bacteroidetes phylum, causes rare but often fatal septicemia in humans that have been in contact with a dog. Here, we show that C. canimorsus strains isolated from human infections grow readily in heat-inactivated human serum and that this property depends on a typical polysaccharide utilization locus (PUL), namely, PUL3 in strain Cc5. PUL are a hallmark of Bacteroidetes, and they encode various products, including surface protein complexes that capture and process polysaccharides or glycoproteins. The archetype system is the Bacteroides thetaiotaomicron Sus system, devoted to starch utilization. Unexpectedly, PUL3 conferred the capacity to acquire iron from serotransferrin (STF), and this capacity required each of the seven encoded proteins, indicating that a whole Sus-like machinery is acting as an iron capture system (ICS), a new and unexpected function for Sus-like machinery. No siderophore could be detected in the culture supernatant of C. canimorsus, suggesting that the Sus-like machinery captures iron directly from transferrin, but this could not be formally demonstrated. The seven genes of the ICS were found in the genomes of several opportunistic pathogens from the Capnocytophaga and Prevotella genera, in different isolates of the severe poultry pathogen Riemerella anatipestifer, and in strains of Bacteroides fragilis and Odoribacter splanchnicus isolated from human infections. Thus, this study describes a new type of ICS that evolved in Bacteroidetes from a polysaccharide utilization system and most likely represents an important virulence factor in this group.

  18. New iron acquisition system in Bacteroidetes.

    PubMed

    Manfredi, Pablo; Lauber, Frédéric; Renzi, Francesco; Hack, Katrin; Hess, Estelle; Cornelis, Guy R

    2015-01-01

    Capnocytophaga canimorsus, a dog mouth commensal and a member of the Bacteroidetes phylum, causes rare but often fatal septicemia in humans that have been in contact with a dog. Here, we show that C. canimorsus strains isolated from human infections grow readily in heat-inactivated human serum and that this property depends on a typical polysaccharide utilization locus (PUL), namely, PUL3 in strain Cc5. PUL are a hallmark of Bacteroidetes, and they encode various products, including surface protein complexes that capture and process polysaccharides or glycoproteins. The archetype system is the Bacteroides thetaiotaomicron Sus system, devoted to starch utilization. Unexpectedly, PUL3 conferred the capacity to acquire iron from serotransferrin (STF), and this capacity required each of the seven encoded proteins, indicating that a whole Sus-like machinery is acting as an iron capture system (ICS), a new and unexpected function for Sus-like machinery. No siderophore could be detected in the culture supernatant of C. canimorsus, suggesting that the Sus-like machinery captures iron directly from transferrin, but this could not be formally demonstrated. The seven genes of the ICS were found in the genomes of several opportunistic pathogens from the Capnocytophaga and Prevotella genera, in different isolates of the severe poultry pathogen Riemerella anatipestifer, and in strains of Bacteroides fragilis and Odoribacter splanchnicus isolated from human infections. Thus, this study describes a new type of ICS that evolved in Bacteroidetes from a polysaccharide utilization system and most likely represents an important virulence factor in this group. PMID:25368114

  19. Quantitative knowledge acquisition for expert systems

    NASA Technical Reports Server (NTRS)

    Belkin, Brenda L.; Stengel, Robert F.

    1991-01-01

    A common problem in the design of expert systems is the definition of rules from data obtained in system operation or simulation. While it is relatively easy to collect data and to log the comments of human operators engaged in experiments, generalizing such information to a set of rules has not previously been a direct task. A statistical method is presented for generating rule bases from numerical data, motivated by an example based on aircraft navigation with multiple sensors. The specific objective is to design an expert system that selects a satisfactory suite of measurements from a dissimilar, redundant set, given an arbitrary navigation geometry and possible sensor failures. The systematic development is described of a Navigation Sensor Management (NSM) Expert System from Kalman Filter convariance data. The method invokes two statistical techniques: Analysis of Variance (ANOVA) and the ID3 Algorithm. The ANOVA technique indicates whether variations of problem parameters give statistically different covariance results, and the ID3 algorithms identifies the relationships between the problem parameters using probabilistic knowledge extracted from a simulation example set. Both are detailed.

  20. New Methodology of Designing Inexpensive Hybrid Control-Acquisition Systems for Mechatronic Constructions

    PubMed Central

    Augustyn, Jacek

    2013-01-01

    This article presents a new methodology for designing a hybrid control and acquisition system consisting of a 32-bit SoC microsystem connected via a direct Universal Serial Bus (USB) with a standard commercial off-the-shelf (COTS) component running the Android operating system. It is proposed to utilize it avoiding the use of an additional converter. An Android-based component was chosen to explore the potential for a mobile, compact and energy efficient solution with easy to build user interfaces and easy wireless integration with other computer systems. This paper presents results of practical implementation and analysis of experimental real-time performance. It covers closed control loop time between the sensor/actuator module and the Android operating system as well as the real-time sensor data stream within such a system. Some optimisations are proposed and their influence on real-time performance was investigated. The proposed methodology is intended for acquisition and control of mechatronic systems, especially mobile robots. It can be used in a wide range of control applications as well as embedded acquisition-recording devices, including energy quality measurements, smart-grids and medicine. It is demonstrated that the proposed methodology can be employed without developing specific device drivers. The latency achieved was less than 0.5 ms and the sensor data stream throughput was on the order of 750 KB/s (compared to 3 ms latency and 300 KB/s in traditional solutions). PMID:24351633

  1. Solar powered wrist worn acquisition system for continuous photoplethysmogram monitoring.

    PubMed

    Dieffenderfer, James P; Beppler, Eric; Novak, Tristan; Whitmire, Eric; Jayakumar, Rochana; Randall, Clive; Qu, Weiguo; Rajagopalan, Ramakrishnan; Bozkurt, Alper

    2014-01-01

    We present a solar-powered, wireless, wrist-worn platform for continuous monitoring of physiological and environmental parameters during the activities of daily life. In this study, we demonstrate the capability to produce photoplethysmogram (PPG) signals using this platform. To adhere to a low power budget for solar-powering, a 574 nm green light source is used where the PPG from the radial artery would be obtained with minimal signal conditioning. The system incorporates two monocrystalline solar cells to charge the onboard 20 mAh lithium polymer battery. Bluetooth Low Energy (BLE) is used to tether the device to a smartphone that makes the phone an access point to a dedicated server for long term continuous storage of data. Two power management schemes have been proposed depending on the availability of solar energy. In low light situations, if the battery is low, the device obtains a 5-second PPG waveform every minute to consume an average power of 0.57 mW. In scenarios where the battery is at a sustainable voltage, the device is set to enter its normal 30 Hz acquisition mode, consuming around 13.7 mW. We also present our efforts towards improving the charge storage capacity of our on-board super-capacitor.

  2. Solar powered wrist worn acquisition system for continuous photoplethysmogram monitoring.

    PubMed

    Dieffenderfer, James P; Beppler, Eric; Novak, Tristan; Whitmire, Eric; Jayakumar, Rochana; Randall, Clive; Qu, Weiguo; Rajagopalan, Ramakrishnan; Bozkurt, Alper

    2014-01-01

    We present a solar-powered, wireless, wrist-worn platform for continuous monitoring of physiological and environmental parameters during the activities of daily life. In this study, we demonstrate the capability to produce photoplethysmogram (PPG) signals using this platform. To adhere to a low power budget for solar-powering, a 574 nm green light source is used where the PPG from the radial artery would be obtained with minimal signal conditioning. The system incorporates two monocrystalline solar cells to charge the onboard 20 mAh lithium polymer battery. Bluetooth Low Energy (BLE) is used to tether the device to a smartphone that makes the phone an access point to a dedicated server for long term continuous storage of data. Two power management schemes have been proposed depending on the availability of solar energy. In low light situations, if the battery is low, the device obtains a 5-second PPG waveform every minute to consume an average power of 0.57 mW. In scenarios where the battery is at a sustainable voltage, the device is set to enter its normal 30 Hz acquisition mode, consuming around 13.7 mW. We also present our efforts towards improving the charge storage capacity of our on-board super-capacitor. PMID:25570657

  3. Language Acquisition without Universal Grammar: A General Nativist Proposal for L2 Learning.

    ERIC Educational Resources Information Center

    O'Grady, William

    1996-01-01

    Explores the prospects for a "general nativist" theory of first- and second-language acquisition (SLA), outlines a modular acquisition device not including Universal Grammar, and considers the role of universal grammar in the emergence of a first language (L1). (50 references) (Author/CK)

  4. Beacon data acquisition and display system

    DOEpatents

    Skogmo, D.G.; Black, B.D.

    1991-12-17

    A system for transmitting aircraft beacon information received by a secondary surveillance radar through telephone lines to a remote display includes a digitizer connected to the radar for preparing a serial file of data records containing position and identification information of the beacons detected by each sweep of the radar. This information is transmitted through the telephone lines to a remote computer where it is displayed. 6 figures.

  5. Beacon data acquisition and display system

    SciTech Connect

    Skogmo, David G.; Black, Billy D.

    1991-01-01

    A system for transmitting aircraft beacon information received by a secondary surveillance radar through telephone lines to a remote display includes a digitizer connected to the radar for preparing a serial file of data records containing position and identification information of the beacons detected by each sweep of the radar. This information is transmitted through the telephone lines to a remote computer where it is displayed.

  6. Mark-II Data Acquisition and Trigger system

    SciTech Connect

    Breidenbach, M.

    1984-06-01

    The Mark-II Data Acquisition and Trigger system requirements and general solution are described. The solution takes advantage of the synchronous crossing times and low event rates of an electron positron collider to permit a very highly multiplexed analog scheme to be effective. The system depends on a two level trigger to operate with acceptable dead time. The trigger, multiplexing, data reduction, calibration, and CAMAC systems are described.

  7. Modular Wireless Data-Acquisition and Control System

    NASA Technical Reports Server (NTRS)

    Perotti, Jose; Lucena, Angel; Medelius, Pedro; Mata, Carlos; Eckhoff, Anthony; Blalock, Norman

    2004-01-01

    A modular wireless data-acquisition and control system, now in operation at Kennedy Space Center, offers high performance at relatively low cost. The system includes a central station and a finite number of remote stations that communicate with each other through low-power radio frequency (RF) links. Designed to satisfy stringent requirements for reliability, integrity of data, and low power consumption, this system could be reproduced and adapted to use in a broad range of settings.

  8. The transputer based GA. SP data acquisition system

    SciTech Connect

    Colombo, D.; Avano, B.; DePoli, M.; Maron, G. ); Negro, A.; Parlati, G. )

    1992-04-01

    In this paper, the new data acquisition for the GA.SP detector is presented. It is a distributed system based on a network of 40 T800 and T222 transputers linked to a VME system used for histogram storage. A 100 MBit/s FDDI ring connects the system to UNIX workstations used for the experiment control, histogram display and second level data analysis.

  9. VME multiprocessor system for data acquisition at OSIRIS

    SciTech Connect

    Ziem, P.; Kiehne, T.; Beschorner, C.; Drescher, B.; Zahn, J.

    1987-08-01

    A VME multiprocessor system for data acquisition and data display utilizing several MC68XXX based CPUs and VMEbuses is described. The design of the VME system was stimulated by the data handling requirements of experiments using the anti-Compton spectrometer OSIRIS, i.e. data storage on optical disks and on-line accumulation of large 2-dimensional histograms (4096 x 4096 channels). Due to the general approach the VME system is easily applicable for other nuclear physics experiments.

  10. The wireless data acquisition system based on Bluetooth

    NASA Astrophysics Data System (ADS)

    Cheng, En; Xu, Xiao-na; Wu, Si-long

    2013-03-01

    Bluetooth is one of the wireless communication technology, which is developing rapidly in recent years. As a result of low cost and short distance, Bluetooth can set up a special connection for portable electronic devices and stationary electronic equipment communication environment. The paper studies a data acquisition system based on Bluetooth. The system can collect the angle of motor rotation and send it to the Receiver through the Bluetooth. The results show that the system can be run normal.[1

  11. 76 FR 7526 - Major System Acquisition; Earned Value Management

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-10

    ... Weber (Mail stop 5K80), NASA Headquarters, Office of Procurement, Contract Management Division... INFORMATION CONTACT: Carl Weber, NASA, Office of Procurement, Contract Management Division (Suite 5K80); (202... SPACE ADMINISTRATION 48 CFR Part 1834 RIN 2700-AD29 Major System Acquisition; Earned Value...

  12. 40 CFR 205.54-2 - Sound data acquisition system.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Sound data acquisition system. 205.54-2 Section 205.54-2 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) NOISE ABATEMENT PROGRAMS TRANSPORTATION EQUIPMENT NOISE EMISSION CONTROLS Medium and Heavy Trucks § 205.54-2...

  13. A status report on the SLD data acquisition system

    SciTech Connect

    Not Available

    1988-11-01

    The basic design of the SLD data acquisition system and its present status are reviewed. Aspects of the design that take particular advantage of the relatively low e/sup +/e/sup /minus// cross section and the low beam crossing rate of a linear collider are explained. 14 refs., 8 figs.

  14. Data acquisition system used in radiation induced electrical degradation experiments

    SciTech Connect

    White, D.P.

    1995-04-01

    Radiation induced electrical degradation (RIED) of ceramic materials has recently been reported and is the topic of much research at the present time. The object of this report is to describe the data acquisition system for an experiment designed to study RIED at the High Flux Beam Reactor (HFBR) at Brookhaven National Laboratory.

  15. Auto-Routable, Configurable, Daisy Chainable Data Acquisition System

    NASA Technical Reports Server (NTRS)

    Shuler, Robert L. (Inventor)

    2005-01-01

    A method and apparatus for an acquisition system includes a plurality of sensor input signal lines. At least one of the plurality of sensor input signal lines operatively connects to at least one of a plurality of amplifier circuits. At least one of the plurality of amplifier circuits operatively connects to at least one of a plurality of filter circuits.

  16. 40 CFR 205.54-2 - Sound data acquisition system.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 25 2014-07-01 2014-07-01 false Sound data acquisition system. 205.54... ABATEMENT PROGRAMS TRANSPORTATION EQUIPMENT NOISE EMISSION CONTROLS Medium and Heavy Trucks § 205.54-2 Sound... established as equivalent to a Type I—ANSI S1.4-1971 sound level meter for use in determining compliance...

  17. Aerial data acquisition system for earth survey

    NASA Astrophysics Data System (ADS)

    Uhl, Bernd

    1990-11-01

    Zeiss, in cooperation with Niletus, have developed an airborne Data Recording and Control System using high resolution reconnaissance cameras combined with video tape recording. Sensors are installed in a Dornier DO-228 aircraft for special earth survey missions which provide forest damage assessment in mountainous regions. Sensors include KS-153A wide angle- and telelens camera configurations. A laser distance meter provides autofocus capability for the telelens camera. Flight and mission data are recorded on film and video for cross-reference purposes during photo-interpretation. Special photogrammetric interpretation equipment then produces detailed maps used to direct corrective activities.

  18. The NA62 spectrometer acquisition system

    NASA Astrophysics Data System (ADS)

    Azorskiy, N.; Ceccucci, A.; Bendotti, J.; Danielsson, H.; Degrange, J.; Dixon, N.; Elsha, V.; Enik, T.; Glonti, L.; Gusakov, Y.; Kakurin, S.; Kekelidze, V.; Kislov, E.; Kolesnikov, A.; Koval, M.; Lichard, P.; Madigozhin, D.; Morant, J.; Movchan, S.; Perez Gomez, F.; Palladino, V.; Polenkevich, I.; Potrebenikov, Y.; Ruggiero, G.; Samsonov, V.; Shkarovskiy, S.; Sotnikov, A.

    2016-02-01

    The NA62 low mass spectrometer consists of 7000 straw tubes operating in vacuum. The front-end electronics is directly mounted on the detector and connected by a flexible PCB. The front-end board provides the amplification, shaping, discrimination and time measurements of the analogue signals from 16 channels. After digitisation the data is sent to a VME 9U read-out board. The data, once matched with the trigger, is sent to the next step and used by the trigger level 1 algorithm. The front-end and read-out systems of the detector will be presented along with the first results of the detector performances.

  19. Development of a Unix/VME data acquisition system

    SciTech Connect

    Miller, M.C.; Ahern, S.; Clark, S.M. )

    1992-01-01

    The current status of a Unix-based VME data acquisition development project is described. It is planned to use existing Fortran data collection software to drive the existing CAMAC electronics via a VME CAMAC branch driver card and associated Daresbury Unix driving software. The first usable Unix driver has been written and produces single-action CAMAC cycles from test software. The data acquisition code has been implemented in test mode under Unix with few problems and effort is now being directed toward finalizing calls to the CAMAC-driving software and ultimate evaluation of the complete system.

  20. Context-specific comparison of sleep acquisition systems in Drosophila

    PubMed Central

    Garbe, David S.; Bollinger, Wesley L.; Vigderman, Abigail; Masek, Pavel; Gertowski, Jill; Sehgal, Amita; Keene, Alex C.

    2015-01-01

    ABSTRACT Sleep is conserved across phyla and can be measured through electrophysiological or behavioral characteristics. The fruit fly, Drosophila melanogaster, provides an excellent model for investigating the genetic and neural mechanisms that regulate sleep. Multiple systems exist for measuring fly activity, including video analysis and single-beam (SB) or multi-beam (MB) infrared (IR)-based monitoring. In this study, we compare multiple sleep parameters of individual flies using a custom-built video-based acquisition system, and commercially available SB- or MB-IR acquisition systems. We report that all three monitoring systems appear sufficiently sensitive to detect changes in sleep duration associated with diet, age, and mating status. Our data also demonstrate that MB-IR detection appeared more sensitive than the SB-IR for detecting baseline nuances in sleep architecture, while architectural changes associated with varying life-history and environment were generally detected across all acquisition types. Finally, video recording of flies in an arena allowed us to measure the effect of ambient environment on sleep. These experiments demonstrate a robust effect of arena shape and size as well as light levels on sleep duration and architecture, and highlighting the versatility of tracking-based sleep acquisition. These findings provide insight into the context-specific basis for choosing between Drosophila sleep acquisition systems, describe a novel cost-effective system for video tracking, and characterize sleep analysis using the MB-IR sleep analysis. Further, we describe a modified dark-place preference sleep assay using video tracking, confirming that flies prefer to sleep in dark locations. PMID:26519516

  1. L-C Measurement Acquisition Method for Aerospace Systems

    NASA Technical Reports Server (NTRS)

    Woodard, Stanley E.; Taylor, B. Douglas; Shams, Qamar A.; Fox, Robert L.

    2003-01-01

    This paper describes a measurement acquisition method for aerospace systems that eliminates the need for sensors to have physical connection to a power source (i.e., no lead wires) or to data acquisition equipment. Furthermore, the method does not require the sensors to be in proximity to any form of acquisition hardware. Multiple sensors can be interrogated using this method. The sensors consist of a capacitor, C(p), whose capacitance changes with changes to a physical property, p, electrically connected to an inductor, L. The method uses an antenna to broadcast electromagnetic energy that electrically excites one or more inductive-capacitive sensors via Faraday induction. This method facilitates measurements that were not previously possible because there was no practical means of providing power and data acquisition electrical connections to a sensor. Unlike traditional sensors, which measure only a single physical property, the manner in which the sensing element is interrogated simultaneously allows measurement of at least two unrelated physical properties (e.g., displacement rate and fluid level) by using each constituent of the L-C element. The key to using the method for aerospace applications is to increase the distance between the L-C elements and interrogating antenna; develop all key components to be non-obtrusive and to develop sensing elements that can easily be implemented. Techniques that have resulted in increased distance between antenna and sensor will be presented. Fluid-level measurements and pressure measurements using the acquisition method are demonstrated in the paper.

  2. Data acquisition system for the VENUS detector at TRISTAN

    NASA Astrophysics Data System (ADS)

    Amako, K.; Arai, Y.; Sakamoto, H.; Teramoto, Y.; Uehara, S.; Yasu, Y.; Chiba, Y.; Endo, I.; Hayashibara, I.; Ohsugi, T.; Tanaka, R.

    1988-11-01

    A data acquisition system for the VENUS detector at the TRISTAN electron-positron collider is presented. The whole system of the VENUS detector consists of nine different kinds of principal detectors, and the total number of electronics channels of the system reaches about 30 000. A FASTBUS system was introduced as the main data path and the TKO and the CAMAC standard have also been utilized for the frontend electronics. A FASTBUS interface to an on-line computer (VAX11/780), simplex segment interconnect and many data acquisition modules were developed. Most of the data are analyzed in a VAX cluster system in real time. Data logging is done in a main frame computer (FACOM M382) by using an automatic loading cartridge tape subsystem.

  3. Testing proposed planetary systems - to destruction

    NASA Astrophysics Data System (ADS)

    Horner, J.; Wittenmyer, R. A.; Marshall, J. P.; Hinse, T. C.; Robertson, P.

    2014-08-01

    J Horner, R A Wittenmyer, J P Marshall, T C Hinse and P Robertson examine the dynamics of exoplanet systems and find that some of them don't last long. The stability of planetary systems offers a check on the likelihood of proposed multiple-exoplanet systems.

  4. Goddard Space Flight Center's Structural Dynamics Data Acquisition System

    NASA Technical Reports Server (NTRS)

    McLeod, Christopher

    2004-01-01

    Turnkey Commercial Off The Shelf (COTS) data acquisition systems typically perform well and meet most of the objectives of the manufacturer. The problem is that they seldom meet most of the objectives of the end user. The analysis software, if any, is unlikely to be tailored to the end users specific application; and there is seldom the chance of incorporating preferred algorithms to solve unique problems. Purchasing a customized system allows the end user to get a system tailored to the actual application, but the cost can be prohibitive. Once the system has been accepted, future changes come with a cost and response time that's often not workable. When it came time to replace the primary digital data acquisition system used in the Goddard Space Flight Center's Structural Dynamics Test Section, the decision was made to use a combination of COTS hardware and in-house developed software. The COTS hardware used is the DataMAX II Instrumentation Recorder built by R.C. Electronics Inc. and a desktop Pentium 4 computer system. The in-house software was developed using MATLAB from The MathWorks. This paper will describe the design and development of the new data acquisition and analysis system.

  5. Goddard Space Flight Center's Structural Dynamics Data Acquisition System

    NASA Technical Reports Server (NTRS)

    McLeod, Christopher

    2004-01-01

    Turnkey Commercial Off The Shelf (COTS) data acquisition systems typically perform well and meet most of the objectives of the manufacturer. The problem is that they seldom meet most of the objectives of the end user. The analysis software, if any, is unlikely to be tailored to the end users specific application; and there is seldom the chance of incorporating preferred algorithms to solve unique problems. Purchasing a customized system allows the end user to get a system tailored to the actual application, but the cost can be prohibitive. Once the system has been accepted, future changes come with a cost and response time that's often not workable. When it came time to replace the primary digital data acquisition system used in the Goddard Space Flight Center's Structural Dynamics Test Section, the decision was made to use a combination of COTS hardware and in-house developed software. The COTS hardware used is the DataMAX II Instrumentation Recorder built by R.C. Electronics Inc. and a desktop Pentium 4 computer system. The in-house software was developed using MATLAF3 from The Mathworks. This paper will describe the design and development of the new data acquisition and analysis system.

  6. A distributed data acquisition system for aeronautics test facilities

    NASA Technical Reports Server (NTRS)

    Fronek, Dennis L.; Setter, Robert N.; Blumenthal, Philip Z.; Smalley, Robert R.

    1987-01-01

    The NASA Lewis Research Center is in the process of installing a new data acquisition and display system. This new system will provide small and medium sized aeronautics test facilities with a state-of-the-art real-time data acquisition and display system. The new data system will provide for the acquisition of signals from a variety of instrumentation sources. They include analog measurements of temperatures, pressures, and other steady state voltage inputs; frequency inputs to measure speed and flow; discrete I/O for significant events, and modular instrument systems such as multiplexed pressure modules or electronic instrumentation with a IEEE 488 interface. The data system is designed to acquire data, convert it to engineering units, compute test dependent performance calculations, limit check selected channels or calculations, and display the information in alphanumeric or graphical form with a cycle time of one second for the alphanumeric data. This paper describes the system configuration, its salient features, and the expected impact on testing.

  7. Software development for a switch-based data acquisition system

    SciTech Connect

    Booth, A. ); Black, D.; Walsh, D. )

    1991-12-01

    We report on the software aspects of the development of a switch-based data acquisition system at Fermilab. This paper describes how, with the goal of providing an integrated systems engineering'' environment, several powerful software tools were put in place to facilitate extensive exploration of all aspects of the design. These tools include a simulation package, graphics package and an Expert System shell which have been integrated to provide an environment which encourages the close interaction of hardware and software engineers. This paper includes a description of the simulation, user interface, embedded software, remote procedure calls, and diagnostic software which together have enabled us to provide real-time control and monitoring of a working prototype switch-based data acquisition (DAQ) system.

  8. Software development for a switch-based data acquisition system

    SciTech Connect

    Booth, A.; Black, D.; Walsh, D.

    1991-12-01

    We report on the software aspects of the development of a switch-based data acquisition system at Fermilab. This paper describes how, with the goal of providing an ``integrated systems engineering`` environment, several powerful software tools were put in place to facilitate extensive exploration of all aspects of the design. These tools include a simulation package, graphics package and an Expert System shell which have been integrated to provide an environment which encourages the close interaction of hardware and software engineers. This paper includes a description of the simulation, user interface, embedded software, remote procedure calls, and diagnostic software which together have enabled us to provide real-time control and monitoring of a working prototype switch-based data acquisition (DAQ) system.

  9. An integrated, multi-vendor distributed data acquisition system

    SciTech Connect

    Butner, D.N.; Drlik, M.; Meyer, W.H.; Moller, J.M.; Preckshot, G.G.

    1988-03-03

    A distributed data acquisition system that uses various computer hardware and software is being developed to support magnetic fusion experiments at Lawrence Livermore National Laboratory (LLNL). The experimental sequence of operations is controlled by a supervisory program, which coordinates software running on Digital Equipment Corporation (DEC) VAX computers, Hewlett-Packard (HP) UNIX-based workstations, and HP BASIC desktop computers. An interprocess communication system (IPCS) allows programs to communicate with one another in a standard manner regardless of program location in the network or of operating system and hardware differences. We discuss the design and implementation of this data acquisition system with particular emphasis on the coordination model and the IPCS. 5 refs., 3 figs.

  10. Simulation Based Acquisition for NASA's Office of Exploration Systems

    NASA Technical Reports Server (NTRS)

    Hale, Joe

    2004-01-01

    In January 2004, President George W. Bush unveiled his vision for NASA to advance U.S. scientific, security, and economic interests through a robust space exploration program. This vision includes the goal to extend human presence across the solar system, starting with a human return to the Moon no later than 2020, in preparation for human exploration of Mars and other destinations. In response to this vision, NASA has created the Office of Exploration Systems (OExS) to develop the innovative technologies, knowledge, and infrastructures to explore and support decisions about human exploration destinations, including the development of a new Crew Exploration Vehicle (CEV). Within the OExS organization, NASA is implementing Simulation Based Acquisition (SBA), a robust Modeling & Simulation (M&S) environment integrated across all acquisition phases and programs/teams, to make the realization of the President s vision more certain. Executed properly, SBA will foster better informed, timelier, and more defensible decisions throughout the acquisition life cycle. By doing so, SBA will improve the quality of NASA systems and speed their development, at less cost and risk than would otherwise be the case. SBA is a comprehensive, Enterprise-wide endeavor that necessitates an evolved culture, a revised spiral acquisition process, and an infrastructure of advanced Information Technology (IT) capabilities. SBA encompasses all project phases (from requirements analysis and concept formulation through design, manufacture, training, and operations), professional disciplines, and activities that can benefit from employing SBA capabilities. SBA capabilities include: developing and assessing system concepts and designs; planning manufacturing, assembly, transport, and launch; training crews, maintainers, launch personnel, and controllers; planning and monitoring missions; responding to emergencies by evaluating effects and exploring solutions; and communicating across the OEx

  11. Biometric iris image acquisition system with wavefront coding technology

    NASA Astrophysics Data System (ADS)

    Hsieh, Sheng-Hsun; Yang, Hsi-Wen; Huang, Shao-Hung; Li, Yung-Hui; Tien, Chung-Hao

    2013-09-01

    Biometric signatures for identity recognition have been practiced for centuries. Basically, the personal attributes used for a biometric identification system can be classified into two areas: one is based on physiological attributes, such as DNA, facial features, retinal vasculature, fingerprint, hand geometry, iris texture and so on; the other scenario is dependent on the individual behavioral attributes, such as signature, keystroke, voice and gait style. Among these features, iris recognition is one of the most attractive approaches due to its nature of randomness, texture stability over a life time, high entropy density and non-invasive acquisition. While the performance of iris recognition on high quality image is well investigated, not too many studies addressed that how iris recognition performs subject to non-ideal image data, especially when the data is acquired in challenging conditions, such as long working distance, dynamical movement of subjects, uncontrolled illumination conditions and so on. There are three main contributions in this paper. Firstly, the optical system parameters, such as magnification and field of view, was optimally designed through the first-order optics. Secondly, the irradiance constraints was derived by optical conservation theorem. Through the relationship between the subject and the detector, we could estimate the limitation of working distance when the camera lens and CCD sensor were known. The working distance is set to 3m in our system with pupil diameter 86mm and CCD irradiance 0.3mW/cm2. Finally, We employed a hybrid scheme combining eye tracking with pan and tilt system, wavefront coding technology, filter optimization and post signal recognition to implement a robust iris recognition system in dynamic operation. The blurred image was restored to ensure recognition accuracy over 3m working distance with 400mm focal length and aperture F/6.3 optics. The simulation result as well as experiment validates the proposed code

  12. A low cost concept for data acquisition systems applied to decentralized renewable energy plants.

    PubMed

    Jucá, Sandro C S; Carvalho, Paulo C M; Brito, Fábio T

    2011-01-01

    The present paper describes experiences of the use of monitoring and data acquisition systems (DAS) and proposes a new concept of a low cost DAS applied to decentralized renewable energy (RE) plants with an USB interface. The use of such systems contributes to disseminate these plants, recognizing in real time local energy resources, monitoring energy conversion efficiency and sending information concerning failures. These aspects are important, mainly for developing countries, where decentralized power plants based on renewable sources are in some cases the best option for supplying electricity to rural areas. Nevertheless, the cost of commercial DAS is still a barrier for a greater dissemination of such systems in developing countries. The proposed USB based DAS presents a new dual clock operation philosophy, in which the acquisition system contains two clock sources for parallel information processing from different communication protocols. To ensure the low cost of the DAS and to promote the dissemination of this technology in developing countries, the proposed data acquisition firmware and the software for USB microcontrollers programming is a free and open source software, executable in the Linux and Windows® operating systems.

  13. A Low Cost Concept for Data Acquisition Systems Applied to Decentralized Renewable Energy Plants

    PubMed Central

    Jucá, Sandro C. S.; Carvalho, Paulo C. M.; Brito, Fábio T.

    2011-01-01

    The present paper describes experiences of the use of monitoring and data acquisition systems (DAS) and proposes a new concept of a low cost DAS applied to decentralized renewable energy (RE) plants with an USB interface. The use of such systems contributes to disseminate these plants, recognizing in real time local energy resources, monitoring energy conversion efficiency and sending information concerning failures. These aspects are important, mainly for developing countries, where decentralized power plants based on renewable sources are in some cases the best option for supplying electricity to rural areas. Nevertheless, the cost of commercial DAS is still a barrier for a greater dissemination of such systems in developing countries. The proposed USB based DAS presents a new dual clock operation philosophy, in which the acquisition system contains two clock sources for parallel information processing from different communication protocols. To ensure the low cost of the DAS and to promote the dissemination of this technology in developing countries, the proposed data acquisition firmware and the software for USB microcontrollers programming is a free and open source software, executable in the Linux and Windows® operating systems. PMID:22346600

  14. A low cost concept for data acquisition systems applied to decentralized renewable energy plants.

    PubMed

    Jucá, Sandro C S; Carvalho, Paulo C M; Brito, Fábio T

    2011-01-01

    The present paper describes experiences of the use of monitoring and data acquisition systems (DAS) and proposes a new concept of a low cost DAS applied to decentralized renewable energy (RE) plants with an USB interface. The use of such systems contributes to disseminate these plants, recognizing in real time local energy resources, monitoring energy conversion efficiency and sending information concerning failures. These aspects are important, mainly for developing countries, where decentralized power plants based on renewable sources are in some cases the best option for supplying electricity to rural areas. Nevertheless, the cost of commercial DAS is still a barrier for a greater dissemination of such systems in developing countries. The proposed USB based DAS presents a new dual clock operation philosophy, in which the acquisition system contains two clock sources for parallel information processing from different communication protocols. To ensure the low cost of the DAS and to promote the dissemination of this technology in developing countries, the proposed data acquisition firmware and the software for USB microcontrollers programming is a free and open source software, executable in the Linux and Windows® operating systems. PMID:22346600

  15. The EUVE Electronic Proposal Review (EPR) System

    NASA Astrophysics Data System (ADS)

    Cullison, J.; Boyd, W.; Stroozas, B. A.; Malina, R. F.

    1999-12-01

    The Electronic Proposal Review (EPR) system created by the University of California, Berkeley has been used for the last three Extreme Ultraviolet Explorer (EUVE) observing cycles. This process, including the EUVE Electronic Proposal Submission (EPS) system and semi-automated processes for the proposal review, has proven to be an effective and preferred means of serving our users' needs. This paper discusses the various elements of EUVE's EPR system as well as the benefits and insights gained from its creation and usage. Via creating and using EPR, the EUVE staff has optimized the administration of the proposal review process and has gained insights relevant to the program's management and application design. EUVE staff has benefitted from EPR over the past three cycles, as the applications have been used to process 142 different proposals. The system has not only helped to cut Time Allocation Committee spending in half, standardize Guest Observer proposal submission (i.e. eliminate proposer errors), reduce mailing, minimize clerical work, and streamline committee reporting, it has also proved to be a preferable means of accessing proposals for science planners and data processors who occasionally need an instant means of double checking proposal specifications. Though participants are generally satisfied with the process, the EUVE management staff continues to work, for example, to find ways to insure that the electronic selection continues to involve meaningful avenues of communication where person-to-person contact is not possible or neceessary. Design of EPR is an evolutionary process with potential future improvements including increased automation for the post-submission processes and greater application portability. This work was funded under NASA Cooperative Agreement NCC5-138.

  16. A personal computer-based, multitasking data acquisition system

    NASA Technical Reports Server (NTRS)

    Bailey, Steven A.

    1990-01-01

    A multitasking, data acquisition system was written to simultaneously collect meteorological radar and telemetry data from two sources. This system is based on the personal computer architecture. Data is collected via two asynchronous serial ports and is deposited to disk. The system is written in both the C programming language and assembler. It consists of three parts: a multitasking kernel for data collection, a shell with pull down windows as user interface, and a graphics processor for editing data and creating coded messages. An explanation of both system principles and program structure is presented.

  17. Study of a Tracking and Data Acquisition System (TDAS) in the 1990's

    NASA Technical Reports Server (NTRS)

    1981-01-01

    Progress in concept definition studies, operational assessments, and technology demonstrations for the Tracking and Data Acquisition System (TDAS) is reported. The proposed TDAS will be the follow-on to the Tracking and Data Relay Satellite System and will function as a key element of the NASA End-to-End Data System, providing the tracking and data acquisition interface between user accessible data ports on Earth and the user's spaceborne equipment. Technical activities of the "spacecraft data system architecture' task and the "communication mission model' task are emphasized. The objective of the first task is to provide technology forecasts for sensor data handling, navigation and communication systems, and estimate corresponding costs. The second task is concerned with developing a parametric description of the required communication channels. Other tasks with significant activity include the "frequency plan and radio interference model' and the "Viterbi decoder/simulator study'.

  18. A research of a high precision multichannel data acquisition system

    NASA Astrophysics Data System (ADS)

    Zhong, Ling-na; Tang, Xiao-ping; Yan, Wei

    2013-08-01

    The output signals of the focusing system in lithography are analog. To convert the analog signals into digital ones which are more flexible and stable to process, a desirable data acquisition system is required. The resolution of data acquisition, to some extent, affects the accuracy of focusing. In this article, we first compared performance between the various kinds of analog-to-digital converters (ADC) available on the market at the moment. Combined with the specific requirements (sampling frequency, converting accuracy, numbers of channels etc) and the characteristics (polarization, amplitude range etc) of the analog signals, the model of the ADC to be used as the core chip in our hardware design was determined. On this basis, we chose other chips needed in the hardware circuit that would well match with ADC, then the overall hardware design was obtained. Validation of our data acquisition system was verified through experiments and it can be demonstrated that the system can effectively realize the high resolution conversion of the multi-channel analog signals and give the accurate focusing information in lithography.

  19. DATA ACQUISITION FOR SNS BEAM LOSS MONITOR SYSTEM

    SciTech Connect

    YENG,Y.GASSNER,D.HOFF,L.WITKOVER,R.

    2003-10-13

    The Spallation Neutron Source (SNS) beam loss monitor system uses VME based electronics to measure the radiation produced by lost beam. Beam loss signals from cylindrical argon-filled ion chambers and neutron detectors will be conditioned in analog front-end (AFE) circuitry. These signals will be digitized and further processed in a dedicated VME crate. Fast beam inhibit and low-level, long-term loss warnings will be generated to provide machine protection. The fast loss data will have a bandwidth of 35kHz. While the low level, long-term loss data will have much higher sensitivity. This is further complicated by the 3 decade range of intensity as the Ring accumulates beam. Therefore a bandwidth of 100kHz and dynamic range larger than 21 bits data acquisition system will be required for this purpose. Based on the evaluation of several commercial ADC modules in preliminary design phase, a 24 bits Sigma-Delta data acquisition VME bus card was chosen as the SNS BLM digitizer. An associated vxworks driver and EPICS device support module also have been developed at BNL. Simulating test results showed this system is fully qualified for both fast loss and low-level, long-term loss application. The first prototype including data acquisition hardware setup and EPICS software (running database and OPI clients) will be used in SNS Drift Tube Linac (DTL) system commissioning.

  20. Two Axis Pointing System (TAPS) attitude acquisition, determination, and control

    NASA Technical Reports Server (NTRS)

    Azzolini, John D.; Mcglew, David E.

    1990-01-01

    The Two Axis Pointing System (TAPS) is a 2 axis gimbal system designed to provide fine pointing of Space Transportation System (STS) borne instruments. It features center-of-mass instrument mounting and will accommodate instruments of up to 1134 kg (2500 pounds) which fit within a 1.0 by 1.0 by 4.2 meter (40 by 40 by 166 inch) envelope. The TAPS system is controlled by a microcomputer based Control Electronics Assembly (CEA), a Power Distribution Unit (PDU), and a Servo Control Unit (SCU). A DRIRU-II inertial reference unit is used to provide incremental angles for attitude propagation. A Ball Brothers STRAP star tracker is used for attitude acquisition and update. The theory of the TAPS attitude determination and error computation for the Broad Band X-ray Telescope (BBXRT) are described. The attitude acquisition is based upon a 2 star geometric solution. The acquisition theory and quaternion algebra are presented. The attitude control combines classical position, integral and derivative (PID) control with techniques to compensate for coulomb friction (bias torque) and the cable harness crossing the gimbals (spring torque). Also presented is a technique for an adaptive bias torque compensation which adjusts to an ever changing frictional torque environment. The control stability margins are detailed, with the predicted pointing performance, based upon simulation studies. The TAPS user interface, which provides high level operations commands to facilitate science observations, is outlined.

  1. Data acquisition and analysis using the IBM Computer System 9000

    SciTech Connect

    Mueller, G.E.

    1985-10-01

    A data-acquisition, analysis, and graphing program has been developed on the IBM CS-9000 multitask computer to support the UNM/SNL/GA Thermal-Hydraulic Test Facility. The software has been written in Computer System BASIC which allows accessing and configuring I/O devices. The CS-9000 has been interfaced with an HP 3497A Data Acquisition/Control Unit and an HP 7470A Graphics Plotter through the IEEE-488 Bus. With this configuration the system is capable of scanning 60 channels of analog thermocuple compensated input, 20 channels of analog pressure transducer input, and 16 channels of digital mass flow rate input. The CS-9000 graphics coupled with the HP 7470A provides useful visualization of changes in measured parameters. 8 refs., 7 figs.

  2. Multi-channel data acquisition system with absolute time synchronization

    NASA Astrophysics Data System (ADS)

    Włodarczyk, Przemysław; Pustelny, Szymon; Budker, Dmitry; Lipiński, Marcin

    2014-11-01

    We present a low-cost, stand-alone global-time-synchronized data acquisition system. Our prototype allows recording up to four analog signals with a 16-bit resolution in variable ranges and a maximum sampling rate of 1000 S/s. The system simultaneously acquires readouts of external sensors e.g. magnetometer or thermometer. A complete data set, including a header containing timestamp, is stored on a Secure Digital (SD) card or transmitted to a computer using Universal Serial Bus (USB). The estimated time accuracy of the data acquisition is better than ±200 ns. The device is intended for use in a global network of optical magnetometers (the Global Network of Optical Magnetometers for Exotic physics - GNOME), which aims to search for signals heralding physics beyond the Standard Model, that can be generated by ordinary spin coupling to exotic particles or anomalous spin interactions.

  3. Design of the iLocater acquisition camera demonstration system

    NASA Astrophysics Data System (ADS)

    Bechter, Andrew; Crass, Jonathan; Ketterer, Ryan; Crepp, Justin R.; King, David; Zhao, Bo; Reynolds, Robert; Hinz, Phil; Brooks, Jack; Bechter, Eric

    2015-09-01

    Existing planet-finding spectrometers are limited by systematic errors that result from their seeing-limited design. Of particular concern is the use of multi-mode fibers (MMFs), which introduce modal noise and accept significant amounts of background radiation from the sky. We present the design of a single-mode fiber-based acquisition camera for a diffraction-limited spectrometer named "iLocater." By using the "extreme" adaptive optics (AO) system of the Large Binocular Telescope (LBT), iLocater will overcome the limitations that prevent Doppler instruments from reaching their full potential, allowing precise radial velocity (RV) measurements of terrestrial planets around nearby bright stars. The instrument presented in this paper, which we refer to as the acquisition camera "demonstration system," will measure on-sky single-mode fiber (SMF) coupling efficiency using one of the 8.4m primaries of the LBT in fall 2015.

  4. A middle man approach to knowledge acquisition in expert systems

    NASA Technical Reports Server (NTRS)

    Jordan, Janice A.; Lin, Min-Jin; Mayer, Richard J.; Sterle, Mark E.

    1990-01-01

    The Weed Control Advisor (WCA) is a robust expert system that has been successfully implemented on an IBM AT class microcomputer in CLIPS. The goal of the WCA was to demonstrate the feasibility of providing an economical, efficient, user friendly system through which Texas rice producers could obtain expert level knowledge regarding herbicide application for weed control. During the development phase of the WCA, an improved knowledge acquisition method which we call the Middle Man Approach (MMA) was applied to facilitate the communication process between the domain experts and the knowledge engineer. The MMA served to circumvent the problems associated with the more traditional forms of knowledge acquisition by placing the Middle Man, a semi-expert in the problem domain with some computer expertise, at the site of system development. The middle man was able to contribute to system development in two major ways. First, the Middle Man had experience working in rice production and could assume many of the responsibilities normally performed by the domain experts such as explaining the background of the problem domain and determining the important relations. Second, the Middle Man was familiar with computers and worked closely with the system developers to update the rules after the domain experts reviewed the prototype, contribute to the help menus and explanation portions of the expert system, conduct the testing that is required to insure that the expert system gives the expected results answer questions in a timely way, help the knowledge engineer structure the domain knowledge into a useable form, and provide insight into the end user's profile which helped in the development of the simple user friendly interface. The final results were not only that both time expended and costs were greatly reduced by using the MMA, but the quality of the system was improved. This papa will introduce the WCA system and then discuss traditional knowledge acquisition along with

  5. A triggerless digital data acquisition system for nuclear decay experiments

    SciTech Connect

    Agramunt, J.; Tain, J. L.; Albiol, F.; Algora, A.; Estevez, E.; Giubrone, G.; Jordan, M. D.; Molina, F.; Rubio, B.; Valencia, E.

    2013-06-10

    In nuclear decay experiments an important goal of the Data Acquisition (DAQ) system is to allow the reconstruction of time correlations between signals registered in different detectors. Classically DAQ systems are based in a trigger that starts the event acquisition, and all data related with the event of that trigger are collected as one compact structure. New technologies and electronics developments offer new possibilities to nuclear experiments with the use of sampling ADC-s. This type of ADC-s is able to provide the pulse shape, height and a time stamp of the signal. This new feature (time stamp) allows new systems to run without an event trigger. Later, the event can be reconstructed using the time stamp information. In this work we present a new DAQ developed for {beta}-delayed neutron emission experiments. Due to the long moderation time of neutrons, we opted for a self-trigger DAQ based on commercial digitizers. With this DAQ a negligible acquisition dead time was achieved while keeping a maximum of event information and flexibility in time correlations.

  6. A triggerless digital data acquisition system for nuclear decay experiments

    NASA Astrophysics Data System (ADS)

    Agramunt, J.; Tain, J. L.; Albiol, F.; Algora, A.; Estevez, E.; Giubrone, G.; Jordan, M. D.; Molina, F.; Rubio, B.; Valencia, E.

    2013-06-01

    In nuclear decay experiments an important goal of the Data Acquisition (DAQ) system is to allow the reconstruction of time correlations between signals registered in different detectors. Classically DAQ systems are based in a trigger that starts the event acquisition, and all data related with the event of that trigger are collected as one compact structure. New technologies and electronics developments offer new possibilities to nuclear experiments with the use of sampling ADC-s. This type of ADC-s is able to provide the pulse shape, height and a time stamp of the signal. This new feature (time stamp) allows new systems to run without an event trigger. Later, the event can be reconstructed using the time stamp information. In this work we present a new DAQ developed for β-delayed neutron emission experiments. Due to the long moderation time of neutrons, we opted for a self-trigger DAQ based on commercial digitizers. With this DAQ a negligible acquisition dead time was achieved while keeping a maximum of event information and flexibility in time correlations.

  7. Isolated data acquisition system for high voltage applications

    SciTech Connect

    Waitz, A.; Donaldson, A.

    1985-06-01

    This report describes the design and operation of a microcomputer controlled system for acquisition of both analog and binary data within the high voltage stages of a linac modulator. The system is comprised of a microprocessor Controller which communicates with the remote data Acquisition circuits via an optical bus. The bus, which uses a 1 MHz Manchester II format, is configured as a loop, starting at the Controller, daisy-chaining the remote cards and terminating back at the Controller. Upon receiving a linac timing pulse, the Controller sends addressed commands to the individual remote cards and receives data back. It then passes this data to the linac control system through a Multibus connection. Each remote circuit can return 16 binary sense and 7 (12 bit) analog parameters within 270 us. This speed is possible because of a pipelined design where one word is transmitted while another is being converted. A data conversion cycle is initiated when a remote data acquisition card receives the proper command and address from the controller.

  8. The ADIS advanced data acquisition, imaging, and storage system

    SciTech Connect

    Flaherty, J.W.

    1986-01-01

    The design and development of Automated Ultrasonic Scanning Systems (AUSS) by McDonnell Aircraft Company has provided the background for the development of the ADIS advanced data acquisition, imaging, and storage system. The ADIS provides state-of-the-art ultrasonic data processing and imaging features which can be utilized in both laboratory and production line composite evaluation applications. System features, such as, real-time imaging, instantaneous electronic rescanning, multitasking capability, histograms, and cross-sections, provide the tools necessary to inspect and evaluate composite parts quickly and consistently.

  9. The Nuclotron internal target control and data acquisition system

    NASA Astrophysics Data System (ADS)

    Isupov, A. Yu.; Krasnov, V. A.; Ladygin, V. P.; Piyadin, S. M.; Reznikov, S. G.

    2013-01-01

    The new control system of the Nuclotron (JINR, Dubna) internal target is described in both hardware and software aspects. The CAMAC hardware is based on the use of the standard CAMAC modules developed and manufactured at JINR. The internal target control and data acquisition (IntTarg CDAQ) system software is implemented using the ngdp framework under the Unix-like operating system (OS) FreeBSD to allow easy network distribution of the online data collected from internal target and accompanying detectors, as well as the internal target remote control.

  10. A microcomputer based data acquisition system and experiment controller

    NASA Technical Reports Server (NTRS)

    Ganz, M. W.

    1981-01-01

    A data acquisition system is described. The system monitors and records the signal strength of a radio beacon sent to Earth from a geosynchronous satellite. It acquires data from several devices such as a radar, a radiometer, and a rain gauge which monitor the meteorological conditions along the Earth space propagation path. The acquired data are stored in digital format on magnetic tape for analysis at the computer center. A detailed description of the design and operation of the system's various hardware components is given. Schematic diagrams, the theory of operation, and normal operating procedures are presented.

  11. A unique data acquisition system for electrical resistance tomography

    SciTech Connect

    Daily, W.; Ramirez, A.; Zonge, K.

    1996-01-04

    Unique capabilities are needed in instrumentation used for acquiring data to do electrical resistance tomography (ERT). A data acquisition system is described which has a good combination of the required capabilities and yet is field rugged and user friendly. The system is a multichannel detector for high data rates, can operate over a wide range of load conditions, will measure both in phase and quadrature resistance at frequencies between 0.0007 Hz and 8 kHz. The system has been used in both the field and laboratory to collect data with a typical accuracy between 1 and 10%.

  12. Acquisition, tracking, and pointing system for self-protection applications

    NASA Astrophysics Data System (ADS)

    Hammer, Steven J.; Stockum, Larry A.; Chesser, Douglas E.; Miller, John E.

    1998-07-01

    A state-of-the-art acquisition/tracking/positioning (ATP) system for vehicle protection and area defense application is presently being developed. The ATP system, referred to as the high performance laser fire control system, has been designed to automatically acquire, track, rangefind and designate top attack weapons, such as mortars and artillery, as well as line-of-sight type weapons, such as anti-tank guided missiles and anti-tank projectiles. The ATP mission scenario requires full hemispherical coverage, extremely high acceleration capabilities, precision stabilization, and precision pointing.

  13. 76 FR 81554 - 60-Day Notice of Proposed Information Collection: Department of State Acquisition Regulation (DOSAR)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-28

    ... Collection: Department of State Acquisition Regulation (DOSAR). OMB Control Number: 1405-0050. Type of... of the Procurement Executive (A/OPE). Form Number: N/A. Respondents: Any business, other for-profit, individual, not-for-profit, or household organizations wishing to receive Department of State...

  14. 76 FR 27385 - Proposed Information Collection (Forms for Grants to States for Construction and Acquisition of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-11

    ... State Home Facilities) Activity; Comment Request AGENCY: Veterans Health Administration, Department of... the notice. This notice solicits comments for information needed to apply for a state home.... Title: Forms for Grants to States for Construction and Acquisition of State Home Facilities, VA Forms...

  15. High Speed Data Acquisition System for Three-Dimensional X-Ray and Neutron Computed Tomography

    SciTech Connect

    Davis, A.W.; Claytor, T.N.; Sheats, M.J.

    1999-07-01

    Computed tomography for nondestructive evaluation applications has been limited by system cost, resolution, and time requirements for three-dimensional data sets. FlashCT (Flat panel Amorphous Silicon High-Resolution Computed Tomography) is a system developed at Los Alamos National Laboratory to address these three problems. Developed around a flat panel amorphous silicon detector array, FlashCT is suitable for low to medium energy x-ray and neutron computed tomography at 127-micron resolution. Overall system size is small, allowing rapid transportation to a variety of radiographic sources. System control software was developed in LabVIEW for Windows NT to allow multithreading of data acquisition, data correction, and staging motor control. The system control software simplifies data collection and allows fully automated control of the data acquisition process, leading toward remote or unattended operation. The first generation of the FlashCT Data Acquisition System was completed in Au gust 1998, and since that time the system has been tested using x-ray sources ranging in energy from 60 kV to 20MV. The system has also been used to collect data for thermal neutron computed tomography at Los Alamos Neutron Science Center (LANSCE). System improvements have been proposed to provide faster data collection and greater dynamic range during data collection.

  16. Monitoring and Acquisition Real-time System (MARS)

    NASA Technical Reports Server (NTRS)

    Holland, Corbin

    2013-01-01

    MARS is a graphical user interface (GUI) written in MATLAB and Java, allowing the user to configure and control the Scalable Parallel Architecture for Real-Time Acquisition and Analysis (SPARTAA) data acquisition system. SPARTAA not only acquires data, but also allows for complex algorithms to be applied to the acquired data in real time. The MARS client allows the user to set up and configure all settings regarding the data channels attached to the system, as well as have complete control over starting and stopping data acquisition. It provides a unique "Test" programming environment, allowing the user to create tests consisting of a series of alarms, each of which contains any number of data channels. Each alarm is configured with a particular algorithm, determining the type of processing that will be applied on each data channel and tested against a defined threshold. Tests can be uploaded to SPARTAA, thereby teaching it how to process the data. The uniqueness of MARS is in its capability to be adaptable easily to many test configurations. MARS sends and receives protocols via TCP/IP, which allows for quick integration into almost any test environment. The use of MATLAB and Java as the programming languages allows for developers to integrate the software across multiple operating platforms.

  17. Software for Digital Acquisition System and Application to Environmental Monitoring

    NASA Technical Reports Server (NTRS)

    Copeland, G. E.

    1975-01-01

    Criteria for selection of a minicomputer for use as a core resident acquisition system were developed for the ODU Mobile Air Pollution Laboratory. A comprehensive data acquisition program named MONARCH was instituted in a DEC-8/E-8K 12-bit computer. Up to 32 analog voltage inputs are scanned sequentially, converted to BCD, and then to actual numbers. As many as 16 external devices (valves or any other two-state device) are controlled independently. MONARCH is written as a foreground-background program, controlled by an external clock which interrupts once per minute. Transducer voltages are averaged over user specified time intervals and, upon completion of any desired time sequence, outputted are: day, hour, minute, second; state of external valves; average value of each analogue voltage (E Format); as well as standard deviations of these values. Output is compatible with any serially addressed media.

  18. A Proposed System for Classifying Research Universities.

    ERIC Educational Resources Information Center

    Anderson, Robert C.

    A system of classifying research unviersities is proposed based on quantitative criteria. Data from several studies were used to develop a list of 57 leading U.S. research universities. The Carnegie Commission's 1973 and 1976 classification of "Research Universities I" and the Academy for Educational Development's listing are presented, along with…

  19. Low-power triggered data acquisition system and method

    NASA Technical Reports Server (NTRS)

    Champaigne, Kevin (Inventor); Sumners, Jonathan (Inventor)

    2012-01-01

    A low-power triggered data acquisition system and method utilizes low-powered circuitry, comparators, and digital logic incorporated into a miniaturized device interfaced with self-generating transducer sensor inputs to detect, identify and assess impact and damage to surfaces and structures wherein, upon the occurrence of a triggering event that produces a signal greater than a set threshold changes the comparator output and causes the system to acquire and store digital data representative of the incoming waveform on at least one triggered channel. The sensors may be disposed in an array to provide triangulation and location of the impact.

  20. Acquisition system testing with superfluid helium. [cryopumping for space

    NASA Technical Reports Server (NTRS)

    Anderson, John E.; Fester, Dale A.; Dipirro, Michael J.

    1988-01-01

    Minus one-g outflow tests were conducted with superfluid helium in conjunction with a thermomechanical pump setup in order to study the use of capillary acquisition systems for NASA's Superfluid Helium On-Orbit Transfer (SHOOT) flight experiment. Results show that both fine mesh screen and porous sponge systems are capable of supplying superfluid helium to the thermomechanical pump inlet against a one-g head up to 4 cm, fulfilling the SHOOT requirements. Sponge results were found to be reproducible, while the screen results were not.

  1. Wearable System for Acquisition and Monitoring of Biological Signals

    NASA Astrophysics Data System (ADS)

    Piccinini, D. J.; Andino, N. B.; Ponce, S. D.; Roberti, MA; López, y. N.

    2016-04-01

    This paper presents a modular, wearable system for acquisition and wireless transmission of biological signals. Configurable slaves for different signals (such as ECG, EMG, inertial sensors, and temperature) based in the ADS1294 Medical Analog Front End are connected to a Master, based in the CC3200 microcontroller, both from Texas Instruments. The slaves are configurable according to the specific application, providing versatility to the wearable system. The battery consumption is reduced, through a couple of Li-ion batteries and the circuit has also a battery charger. A custom made box was designed and fabricated in a 3D printer, preserving the requirements of low cost, low weight and safety recommendations.

  2. Natural Language Control of Resources for Experimental Data Acquisition Systems

    PubMed Central

    Harbort, Robert A.; Franklin, David; Spencer, James H.

    1980-01-01

    This presentation outlines the results of research into providing a “friendly interface” between a medical scientist and a medical data acquisition system for doing clinical research. The intended user of the system is presumed to have no knowledge of programming languages. The research has emphasized outlining the needs of such a user in terms of hardware configuration, developing specifications for meeting these needs dynamically, and creating a natural language control structure for setting up experiments without the help of a programmer or electronics technician.

  3. Nonredundant Roles of Iron Acquisition Systems in Vibrio cholerae.

    PubMed

    Peng, Eric D; Wyckoff, Elizabeth E; Mey, Alexandra R; Fisher, Carolyn R; Payne, Shelley M

    2015-12-07

    Vibrio cholerae, the causative agent of the severe diarrheal disease cholera, thrives in both marine environments and the human host. To do so, it must encode the tools necessary to acquire essential nutrients, including iron, under these vastly different conditions. A number of V. cholerae iron acquisition systems have been identified; however, the precise role of each system is not fully understood. To test the roles of individual systems, we generated a series of mutants in which only one of the four systems that support iron acquisition on unsupplemented LB agar, Feo, Fbp, Vct, and Vib, remains functional. Analysis of these mutants under different growth conditions showed that these systems are not redundant. The strain carrying only the ferrous iron transporter Feo grew well at acidic, but not alkaline, pH, whereas the ferric iron transporter Fbp promoted better growth at alkaline than at acidic pH. A strain defective in all four systems (null mutant) had a severe growth defect under aerobic conditions but accumulated iron and grew as well as the wild type in the absence of oxygen, suggesting the presence of an additional, unidentified iron transporter in V. cholerae. In support of this, the null mutant was only moderately attenuated in an infant mouse model of infection. While the null mutant used heme as an iron source in vitro, we demonstrate that heme is not available to V. cholerae in the infant mouse intestine.

  4. Nonredundant Roles of Iron Acquisition Systems in Vibrio cholerae

    PubMed Central

    Peng, Eric D.; Wyckoff, Elizabeth E.; Mey, Alexandra R.; Fisher, Carolyn R.

    2015-01-01

    Vibrio cholerae, the causative agent of the severe diarrheal disease cholera, thrives in both marine environments and the human host. To do so, it must encode the tools necessary to acquire essential nutrients, including iron, under these vastly different conditions. A number of V. cholerae iron acquisition systems have been identified; however, the precise role of each system is not fully understood. To test the roles of individual systems, we generated a series of mutants in which only one of the four systems that support iron acquisition on unsupplemented LB agar, Feo, Fbp, Vct, and Vib, remains functional. Analysis of these mutants under different growth conditions showed that these systems are not redundant. The strain carrying only the ferrous iron transporter Feo grew well at acidic, but not alkaline, pH, whereas the ferric iron transporter Fbp promoted better growth at alkaline than at acidic pH. A strain defective in all four systems (null mutant) had a severe growth defect under aerobic conditions but accumulated iron and grew as well as the wild type in the absence of oxygen, suggesting the presence of an additional, unidentified iron transporter in V. cholerae. In support of this, the null mutant was only moderately attenuated in an infant mouse model of infection. While the null mutant used heme as an iron source in vitro, we demonstrate that heme is not available to V. cholerae in the infant mouse intestine. PMID:26644383

  5. Low cost open data acquisition system for biomedical applications

    NASA Astrophysics Data System (ADS)

    Zabolotny, Wojciech M.; Laniewski-Wollk, Przemyslaw; Zaworski, Wojciech

    2005-09-01

    In the biomedical applications it is often necessary to collect measurement data from different devices. It is relatively easy, if the devices are equipped with a MIB or Ethernet interface, however often they feature only the asynchronous serial link, and sometimes the measured values are available only as the analog signals. The system presented in the paper is a low cost alternative to commercially available data acquisition systems. The hardware and software architecture of the system is fully open, so it is possible to customize it for particular needs. The presented system offers various possibilities to connect it to the computer based data processing unit - e.g. using the USB or Ethernet ports. Both interfaces allow also to use many such systems in parallel to increase amount of serial and analog inputs. The open source software used in the system makes possible to process the acquired data with standard tools like MATLAB, Scilab or Octave, or with a dedicated, user supplied application.

  6. Proposed military handbook for dynamic data acquisition and analysis - An invitation to review

    NASA Technical Reports Server (NTRS)

    Himelblau, Harry; Wise, James H.; Piersol, Allan G.; Grundvig, Max R.

    1990-01-01

    A draft Military Handbook prepared under the sponsorship of the USAF Space Division is presently being distributed throughout the U.S. for review by the aerospace community. This comprehensive document provides recommended guidelines for the acquisition and analysis of structural dynamics and aeroacoustic data, and is intended to reduce the errors and variability commonly found in flight, ground and laboratory dynamic test measurements. In addition to the usual variety of measurement problems encountered in the definition of dynamic loads, the development of design and test criteria, and the analysis of failures, special emphasis is given to certain state-of-the-art topics, such as pyroshock data acquisition and nonstationary random data analysis.

  7. Signal distortion from microelectrodes in clinical EEG acquisition systems

    NASA Astrophysics Data System (ADS)

    Stacey, William C.; Kellis, Spencer; Patel, Paras R.; Greger, Bradley; Butson, Christopher R.

    2012-10-01

    Many centers are now using high-density microelectrodes during traditional intracranial electroencephalography (iEEG) both for research and clinical purposes. These microelectrodes are FDA-approved and integrate into clinical EEG acquisition systems. However, the electrical characteristics of these electrodes are poorly described and clinical systems were not designed to use them; thus, it is possible that this shift into clinical practice could have unintended consequences. In this study, we characterized the impedance of over 100 commercial macro- and microelectrodes using electrochemical impedance spectroscopy (EIS) to determine how electrode properties could affect signal acquisition and interpretation. The EIS data were combined with the published specifications of several commercial EEG systems to design digital filters that mimic the behavior of the electrodes and amplifiers. These filters were used to analyze simulated brain signals that contain a mixture of characteristic features commonly observed in iEEG. Each output was then processed with several common quantitative EEG measurements. Our results show that traditional macroelectrodes had low impedances and produced negligible distortion of the original signal. Brain tissue and electrical wiring also had negligible filtering effects. However, microelectrode impedances were much higher and more variable than the macroelectrodes. When connected to clinical amplifiers, higher impedance electrodes produced considerable distortion of the signal at low frequencies (<60 Hz), which caused significant changes in amplitude, phase, variance and spectral band power. In contrast, there were only minimal changes to the signal content for frequencies above 100 Hz. In order to minimize distortion with microelectrodes, we determined that an acquisition system should have an input impedance of at least 1 GΩ, which is much higher than most clinical systems. These results show that it is critical to account for variations

  8. The research of data acquisition system for Raman spectrometer

    NASA Astrophysics Data System (ADS)

    Cui, Xiao; Guo, Pan; Zhang, Yinchao; Chen, Siying; Chen, He; Chen, Wenbo

    2011-11-01

    Raman spectrometer has been widely used as an identification tool for analyzing material structure and composition in many fields. However, Raman scattering echo signal is very weak, about dozens of photons at most in one laser plus signal. Therefore, it is a great challenge to design a Raman spectrum data acquisition system which could accurately receive the weak echo signal. The system designed in this paper receives optical signals with the principle of photon counter and could detect single photon. The whole system consists of a photoelectric conversion module H7421-40 and a photo counting card including a field programmable gate array (FPGA) chip and a PCI9054 chip. The module H7421-40 including a PMT, an amplifier and a discriminator has high sensitivity on wavelength from 300nm to 720nm. The Center Wavelength is 580nm which is close to the excitation wavelength (532nm), QE 40% at peak wavelength, Count Sensitivity is 7.8*105(S-1PW-1) and Count Linearity is 1.5MHZ. In FPGA chip, the functions are divided into three parts: parameter setting module, controlling module, data collection and storage module. All the commands, parameters and data are transmitted between FPGA and computer by PCI9054 chip through the PCI interface. The result of experiment shows that the Raman spectrum data acquisition system is reasonable and efficient. There are three primary advantages of the data acquisition system: the first one is the high sensitivity with single photon detection capability; the second one is the high integrated level which means all the operation could be done by the photo counting card; and the last one is the high expansion ability because of the smart reconfigurability of FPGA chip.

  9. Wireless Data-Acquisition System for Testing Rocket Engines

    NASA Technical Reports Server (NTRS)

    Lin, Chujen; Lonske, Ben; Hou, Yalin; Xu, Yingjiu; Gang, Mei

    2007-01-01

    A prototype wireless data-acquisition system has been developed as a potential replacement for a wired data-acquisition system heretofore used in testing rocket engines. The traditional use of wires to connect sensors, signal-conditioning circuits, and data acquisition circuitry is time-consuming and prone to error, especially when, as is often the case, many sensors are used in a test. The system includes one master and multiple slave nodes. The master node communicates with a computer via an Ethernet connection. The slave nodes are powered by rechargeable batteries and are packaged in weatherproof enclosures. The master unit and each of the slave units are equipped with a time-modulated ultra-wide-band (TMUWB) radio transceiver, which spreads its RF energy over several gigahertz by transmitting extremely low-power and super-narrow pulses. In this prototype system, each slave node can be connected to as many as six sensors: two sensors can be connected directly to analog-to-digital converters (ADCs) in the slave node and four sensors can be connected indirectly to the ADCs via signal conditioners. The maximum sampling rate for streaming data from any given sensor is about 5 kHz. The bandwidth of one channel of the TM-UWB radio communication system is sufficient to accommodate streaming of data from five slave nodes when they are fully loaded with data collected through all possible sensor connections. TM-UWB radios have a much higher spatial capacity than traditional sinusoidal wave-based radios. Hence, this TM-UWB wireless data-acquisition can be scaled to cover denser sensor setups for rocket engine test stands. Another advantage of TM-UWB radios is that it will not interfere with existing wireless transmission. The maximum radio-communication range between the master node and a slave node for this prototype system is about 50 ft (15 m) when the master and slave transceivers are equipped with small dipole antennas. The range can be increased by changing to

  10. A method for knowledge acquisition in diagnostic expert system.

    PubMed

    Li, Weishi; Li, Aiping; Li, Shudong

    2015-01-01

    Knowledge acquisition plays very important role in the diagnostic expert system. It usually takes a long period to acquire disease knowledge using the traditional methods. To solve this problem, this paper describes relations between rough set theory and rule-based description of diseases, which corresponds to the process of knowledge acquisition of diagnostic expert system. Then the exclusive rules, inclusive rules and disease images of disease are built based on the PDES diagnosis model, and the definition of probability rule is put forward. At last, the paper presents the rule-based automated induction reasoning method, including exhaustive search, post-processing procedure, estimation for statistic test and the bootstrap and resampling methods. We also introduce automated induction of the rule-based description, which is used in our diseases diagnostic expert system. The experimental results not only show that rough set theory gives a very suitable framework to represent processes of uncertain knowledge extraction, but also that this method induces diagnostic rules correctly. This method can act as the assistant tool for development of diagnosis expert system, and has an extensive application in intelligent information systems.

  11. The LUX experiment - trigger and data acquisition systems

    NASA Astrophysics Data System (ADS)

    Druszkiewicz, Eryk

    2013-04-01

    The Large Underground Xenon (LUX) detector is a two-phase xenon time projection chamber designed to detect interactions of dark matter particles with the xenon nuclei. Signals from the detector PMTs are processed by custom-built analog electronics which provide properly shaped signals for the trigger and data acquisition (DAQ) systems. During calibrations, both systems must be able to handle high rates and have large dynamic ranges; during dark matter searches, maximum sensitivity requires low thresholds. The trigger system uses eight-channel 64-MHz digitizers (DDC-8) connected to a Trigger Builder (TB). The FPGA cores on the digitizers perform real-time pulse identification (discriminating between S1 and S2-like signals) and event localization. The TB uses hit patterns, hit maps, and maximum response detection to make trigger decisions, which are reached within few microseconds after the occurrence of an event of interest. The DAQ system is comprised of commercial digitizers with customized firmware. Its real-time baseline suppression allows for a maximum event acquisition rate in excess of 1.5 kHz, which results in virtually no deadtime. The performance of the trigger and DAQ systems during the commissioning runs of LUX will be discussed.

  12. Spent fuel test. Climax data acquisition system integration report

    SciTech Connect

    Nyholm, R.A.; Brough, W.G.; Rector, N.L.

    1982-06-01

    The Spent Fuel Test - Climax (SFT-C) is a test of the retrievable, deep geologic storage of commercially generated, spent nuclear reactor fuel in granitic rock. Eleven spent fuel assemblies, together with 6 electrical simulators and 20 guard heaters, are emplaced 420 m below the surface in the Climax granite at the Nevada Test Site. On June 2, 1978, Lawrence Livermore National Laboratory (LLNL) secured funding for the SFT-C, and completed spent fuel emplacement May 28, 1980. This multi-year duration test is located in a remote area and is unattended much of the time. An extensive array of radiological safety and geotechnical instrumentation is deployed to monitor the test performance. A dual minicomputer-based data acquisition system collects and processes data from more than 900 analog instruments. This report documents the design and functions of the hardware and software elements of the Data Acquisition System and describes the supporting facilities which include environmental enclosures, heating/air-conditioning/humidity systems, power distribution systems, fire suppression systems, remote terminal stations, telephone/modem communications, and workshop areas. 9 figures.

  13. Real-time reconfigurable foveal target acquisition and tracking system

    NASA Astrophysics Data System (ADS)

    Stack, David J.; Bandera, Cesar; Wrigley, Christopher J.; Pain, Bedabrata

    1999-07-01

    This paper presents a target acquisition and tracking system based on the biomimetic concept of foveal vision. The system electronically reconfigures the resolution, sizes, shape, and focal plane position of visual acuity to meet time- varying operational requirements while maximizing the relevance of acquired video. A reconfigurable multiresolution active pixel CMOS imaging array is integrated in a closed-loop fashion with video processing and configuration control. Imager and algorithm configuration is updated frame-by-frame and reactively to target and scene conditions. By dynamically tailoring the visual acuity of the senor itself, the relevance and acquired visual information is maximized and a fast update rate is achieved with reduced communications bandwidth and processing requirements throughout the entire system. The system also features small size and less power consumption, and does not require a pointing mechanism. The distinguishing features of reconfigurable foveal machine vision are presented, and the hardware and software architecture of the target acquisition and tracking system is discussed. Real-time experimental result for automated target search, detection, interrogation, and tracking are then presented.

  14. Magnetic-Field-Response Measurement-Acquisition System

    NASA Technical Reports Server (NTRS)

    Woodward, Stanley E.; Shams, Qamar A.; Fox, Robert L.; Taylor, Bryant D.

    2006-01-01

    A measurement-acquisition system uses magnetic fields to power sensors and to acquire measurements from sensors. The system alleviates many shortcomings of traditional measurement-acquisition systems, which include a finite number of measurement channels, weight penalty associated with wires, use limited to a single type of measurement, wire degradation due to wear or chemical decay, and the logistics needed to add new sensors. Eliminating wiring for acquiring measurements can alleviate potential hazards associated with wires, such as damaged wires becoming ignition sources due to arcing. The sensors are designed as electrically passive inductive-capacitive or passive inductive-capacitive-resistive circuits that produce magnetic-field-responses. One or more electrical parameters (inductance, capacitance, and resistance) of each sensor can be variable and corresponds to a measured physical state of interest. The magnetic-field- response attributes (frequency, amplitude, and bandwidth) of the inductor correspond to the states of physical properties for which each sensor measures. For each sensor, the measurement-acquisition system produces a series of increasing magnetic-field harmonics within a frequency range dedicated to that sensor. For each harmonic, an antenna electrically coupled to an oscillating current (the frequency of which is that of the harmonic) produces an oscillating magnetic field. Faraday induction via the harmonic magnetic fields produces an electromotive force and therefore a current in the sensor. Once electrically active, the sensor produces its own harmonic magnetic field as the inductor stores and releases magnetic energy. The antenna of the measurement- acquisition system is switched from a transmitting to a receiving mode to acquire the magnetic-field response of the sensor. The rectified amplitude of the received response is compared to previous responses to prior transmitted harmonics, to ascertain if the measurement system has detected a

  15. VETA x ray data acquisition and control system

    NASA Technical Reports Server (NTRS)

    Brissenden, Roger J. V.; Jones, Mark T.; Ljungberg, Malin; Nguyen, Dan T.; Roll, John B., Jr.

    1992-01-01

    We describe the X-ray Data Acquisition and Control System (XDACS) used together with the X-ray Detection System (XDS) to characterize the X-ray image during testing of the AXAF P1/H1 mirror pair at the MSFC X-ray Calibration Facility. A variety of X-ray data were acquired, analyzed and archived during the testing including: mirror alignment, encircled energy, effective area, point spread function, system housekeeping and proportional counter window uniformity data. The system architecture is presented with emphasis placed on key features that include a layered UNIX tool approach, dedicated subsystem controllers, real-time X-window displays, flexibility in combining tools, network connectivity and system extensibility. The VETA test data archive is also described.

  16. The new digital data acquisition system for Gammasphere

    NASA Astrophysics Data System (ADS)

    Carpenter, M. P.; Albers, M.; Anderson, J. T.; Ayangeakaa, A.; David, H. M.; Hoffman, C. R.; Janssens, R. V. F.; Lauritsen, T.; Madden, T.; Oberling, M.; Seweryniak, D.; Wilt, P.; Zhu, S.

    2015-10-01

    A new digital-based data acquisition system (DAQ) for Gammasphere has been developed. This system leverages the electronics designed for the GRETINA collaboration. At the center of this development are the GRETINA 10-channel digitizer modules which handle the Ge preamp signals at a 100MHz rate, and master trigger and router modules which allow triggers to be constructed from information obtained from the digitizer channels. The new DAQ increases event throughput significantly over the existing system while addressing multiple repair and maintenance issues. New hardware and firmware to integrate the DAQ with Gammasphere and its suite of ancillary detectors has been developed allowing for a seamless changeover from the analog DAQ to the new digital system. An overview of the system and illustrative results from several recent experiments will be presented. This material is based on work supported by the DOE, Office of Science, Office of Nuclear Physics under Contract No. DE-AC02-06CH11357.

  17. Control and data acquisition systems for high field superconducting wigglers

    NASA Astrophysics Data System (ADS)

    Batrakov, A.; Ilyin, I.; Karpov, G.; Kozak, V.; Kuzin, M.; Kuper, E.; Mamkin, V.; Mezentsev, N.; Repkov, V.; Selivanov, A.; Shkaruba, V.

    2001-07-01

    This paper describes the control and DAQ system of superconducting wigglers with magnetic field range up to 10.3 T. The first version of the system controls a 7 T superconducting wiggler prepared for installation at Bessy-II (Germany). The second one controls a 10 T wiggler which is under testing now at the SPring-8 site (Japan). Both systems are based on VME apparatus. The set of specialized VME modules is elaborated to arrange wiggler power supply control, full time wiggler monitoring, and magnetic field high accuracy measurement and field stabilization. The software for the control of the wigglers is written in C language for VxWorks operation system for a Motorola-162 VME controller. The task initialization, stops and acquisition of the data can be done from the nearest personal computer (FTP host for VME), or from the remote system as well.

  18. VME-based data acquisition system for the India-based Neutrino Observatory prototype detector

    NASA Astrophysics Data System (ADS)

    Bhuyan, M.; Chandratre, V. B.; Dasgupta, S.; Datar, V. M.; Kalmani, S. D.; Lahamge, S. M.; Mondal, N. K.; Nagaraj, P.; Pal, S.; Rao, S. K.; Redij, A.; Samuel, D.; Saraf, M. N.; Satyanarayana, B.; Shinde, R. R.; Upadhya, S. S.

    2012-01-01

    The India-based Neutrino Observatory (INO) collaboration has proposed to build a 50 kton Iron-Calorimeter (ICAL) to study neutrino oscillations. About 28,800 Resistive Plate Chambers will be used as active detector elements in this experiment. Preliminary studies are currently underway and as a part of it, a prototype detector was developed which now serves as a cosmic-ray telescope and as a test-bench to study the indigenously built RPCs. A VME-based data acquisition system was designed for this prototype system. Modern software tools were used in the designing of the DAQ software. The design and development of this DAQ system are discussed.

  19. [Hyperspectral acquisition system for tongue inspection based on X-Y scanning galvanometer].

    PubMed

    Li, Gang; Zhao, Jing; Lin, Ling; Zhang, Bao-ju

    2011-12-01

    Hyperspectral was used for tongue inspection in the present work to resolve the problem that information of current research for tongue inspection was inadequate. A hyperspectral acquisition system based on X-Y scanning galvanometer was also proposed due to the high cost of the current hyperspectral apparatus. An experiment was made to test the ability of this system. By collecting the hyperspectral information of color pictures with size similar to the tongue, the results of experiment showed that this system can acquire more information of tongue than other methods, and this method can provide a new way for tongue inspection.

  20. [Hyperspectral acquisition system for tongue inspection based on X-Y scanning galvanometer].

    PubMed

    Li, Gang; Zhao, Jing; Lin, Ling; Zhang, Bao-ju

    2011-12-01

    Hyperspectral was used for tongue inspection in the present work to resolve the problem that information of current research for tongue inspection was inadequate. A hyperspectral acquisition system based on X-Y scanning galvanometer was also proposed due to the high cost of the current hyperspectral apparatus. An experiment was made to test the ability of this system. By collecting the hyperspectral information of color pictures with size similar to the tongue, the results of experiment showed that this system can acquire more information of tongue than other methods, and this method can provide a new way for tongue inspection. PMID:22295792

  1. A low-power asynchronous ECG acquisition system in CMOS technology.

    PubMed

    Hwang, Sungkil; Trakimas, Michael; Sonkusale, Sameer

    2010-01-01

    An asynchronous electrocardiogram (ECG) acquisition system is presented for wearable ambulatory monitoring. The proposed system consists of a low noise front-end amplifier (AFE) with tunable bandwidth, an asynchronous analog-to-digital converter (ADC), and digital signal processing (DSP). Data compression is achieved by the inherent signal dependent sampling rate of the asynchronous architecture. This makes the system attractive for compact wearable ECG monitoring applications. The AFE and ADC were fabricated in a 0.18 microm CMOS technology and consume a total of 79 microW. Measured results demonstrating ECG monitoring are presented. PMID:21096052

  2. 78 FR 18865 - Defense Federal Acquisition Regulation Supplement: Proposal Adequacy Checklist (DFARS Case 2011...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-28

    ... Federal Register at 76 FR 75512 on December 2, 2011, to incorporate the requirement for a proposal... proposed rule is contrary to the BBP Initiative to reduce nonproductive processes and bureaucracy....

  3. MIRAGE: The data acquisition, analysis, and display system

    NASA Technical Reports Server (NTRS)

    Rosser, Robert S.; Rahman, Hasan H.

    1993-01-01

    Developed for the NASA Johnson Space Center and Life Sciences Directorate by GE Government Services, the Microcomputer Integrated Real-time Acquisition Ground Equipment (MIRAGE) system is a portable ground support system for Spacelab life sciences experiments. The MIRAGE system can acquire digital or analog data. Digital data may be NRZ-formatted telemetry packets of packets from a network interface. Analog signal are digitized and stored in experimental packet format. Data packets from any acquisition source are archived to a disk as they are received. Meta-parameters are generated from the data packet parameters by applying mathematical and logical operators. Parameters are displayed in text and graphical form or output to analog devices. Experiment data packets may be retransmitted through the network interface. Data stream definition, experiment parameter format, parameter displays, and other variables are configured using spreadsheet database. A database can be developed to support virtually any data packet format. The user interface provides menu- and icon-driven program control. The MIRAGE system can be integrated with other workstations to perform a variety of functions. The generic capabilities, adaptability and ease of use make the MIRAGE a cost-effective solution to many experimental data processing requirements.

  4. State-of-the-art digital data acquisition system

    SciTech Connect

    Scudiere, M.B.; Adams, D.J.; Beshears, D.L.; Capps, G.J.; Jordan, J.K.; Napier, R.W.; Ott, G.W.; White, C.P.; Nodine, R.N.; Todd, R.A.

    1988-11-01

    The torpedo data acquisition (TORDAC) system is a stand-alone, transportable data acquisition system, packaged to fit into a torpedo-sized vehicle, and is designed to record a mix of user-selectable analog and digital data. TORDAC calibrates, conditions, digitizes, and records multiple channels of analog voltage outputs generated by arrays of vehicle sensors and it also records digital data streams from on-board digital processors. The maximum write speed of the system is 107 Mb/s (one hour duration) which provides a recordable analog bandwidth in excess of 1800 kHz with 96-dB resolution. Configuration of analog signal inputs is flexible; a typical configuration will record 60 wide-band channels (sampled at 100 kHz with a 16-bit analog-to-digital (A/D) converter) and 56 narrow-band channels (sampled at 1.5 kHz with a 12-bit A/D converter). TORDAC also generates programmable output signals (to control internal or external functions) based on the status of inputs being recorded. Operator control of the system for setup, checkout, playback, data validation, and data reduction is performed on networked computer workstations. Dedicated hardware is provided to reconstitute all analog voltage waveforms in real time (from recorded digitized data) to permit quick-look data validation. 14 figs., 1 tab.

  5. Floating data acquisition system for microwave calorimeter measurements on MTX

    SciTech Connect

    Sewall, N.R.; Meassick, S. )

    1989-09-13

    A microwave calorimeter has been designed for making 140-GHz absorption measurements on the MTX. Measurement of the intensity and spatial distribution of the FEL-generated microwave beam on the inner wall will indicate the absorption characteristics of the plasma when heated with a 140 GHz FEL pulse. The calorimeter works by monitoring changes of temperature in silicon carbide tiles located on the inner wall of the tokamak. Thermistors are used to measure the temperature of each tile. The tiles are located inside the tokamak about 1 cm outside of the limiter radius at machine potential. The success of this measurement depends on our ability to float the data acquisition system near machine potential and isolate it from the rest of the vault ground system. Our data acquisition system has 48 channels of thermistor signal conditioning, a multiplexer and digitizer section, a serial data formatter, and a fiber-optic transmitter to send the data out. Additionally, we bring timing signals to the interface through optical fibers to tell it when to begin measurement, while maintaining isolation. The receiver is an HP 200 series computer with a serial data interface; the computer provides storage and local display for the shot temperature profile. Additionally, the computer provides temporary storage of the data until it can be passed to a shared resource management system for archiving. 2 refs., 6 figs.

  6. WIND TURBINE DRIVETRAIN TEST FACILITY DATA ACQUISITION SYSTEM

    SciTech Connect

    Mcintosh, J.

    2012-01-03

    The Wind Turbine Drivetrain Test Facility (WTDTF) is a state-of-the-art industrial facility used for testing wind turbine drivetrains and generators. Large power output wind turbines are primarily installed for off-shore wind power generation. The facility includes two test bays: one to accommodate turbine nacelles up to 7.5 MW and one for nacelles up to 15 MW. For each test bay, an independent data acquisition system (DAS) records signals from various sensors required for turbine testing. These signals include resistance temperature devices, current and voltage sensors, bridge/strain gauge transducers, charge amplifiers, and accelerometers. Each WTDTF DAS also interfaces with the drivetrain load applicator control system, electrical grid monitoring system and vibration analysis system.

  7. An OS9-UNIX data acquisition system with ECL readout

    SciTech Connect

    Ziem, P.; Beschorner, C.; Bohne, W.; Drescher, B.; Friese, T.; Kiehne, T.; Kluge, C.

    1996-02-01

    A new data acquisition system has been developed at the Hahn-Meitner-Institut to handle almost 550 parameters of nuclear physics experiments. The system combines a UNIX host running a portable data buffer router and a VME front-end based on the OS9 real time operating system. Different kinds of pulse analyzers are located in several CAMAC crates which are controlled by the VME system via a VICbus connection. Data readout is performed by means of an ECL daisy chain. Besides controlling CAMAC the main purpose of the VME front-end is event data formatting and histogramming. Using TCP/IP services, the UNIX host receives formatted data packages for data storage and display. During a beam time at the antiproton accelerator LEAR/CERN, the PS208 experiment has accumulated about 100 Gbyte of event data.

  8. Iron acquisition and regulation systems in Streptococcus species.

    PubMed

    Ge, Ruiguang; Sun, Xuesong

    2014-05-01

    Gram-positive Streptococcus species are responsible for millions of cases of meningitis, bacterial pneumonia, endocarditis, erysipelas and necrotizing fasciitis. Iron is essential for the growth and survival of Streptococcus in the host environment. Streptococcus species have developed various mechanisms to uptake iron from an environment with limited available iron. Streptococcus can directly extract iron from host iron-containing proteins such as ferritin, transferrin, lactoferrin and hemoproteins, or indirectly by relying on the employment of specialized secreted hemophores (heme chelators) and small siderophore molecules (high affinity ferric chelators). This review presents the most recent discoveries in the iron acquisition system of Streptococcus species - the transporters as well as the regulators.

  9. Systolic time interval data acquisition system. Specialized cardiovascular studies

    NASA Technical Reports Server (NTRS)

    Baker, J. T.

    1976-01-01

    The development of a data acquisition system for noninvasive measurement of systolic time intervals is described. R-R interval from the ECG determines instantaneous heart rate prior to the beat to be measured. Total electromechanical systole (Q-S2) is measured from the onset of the ECG Q-wave to the onset of the second heart sound (S2). Ejection time (ET or LVET) is measured from the onset of carotid upstroke to the incisure. Pre-ejection period (PEP) is computed by subtracting ET from Q-S2. PEP/ET ratio is computed directly.

  10. Data acquisition in a wireless diabetic and cardiac monitoring system.

    PubMed

    Harvey, Paul; Woodward, Bryan; Datta, Sekharjit; Mulvaney, David

    2011-01-01

    A telemedicine system is described for monitoring the vital signs and general health indicators of patients with cardiac and diabetic conditions. Telemetry from wireless sensors and readings from other instruments are combined into a comprehensive patient health dataset. The data can be stored, accessed and displayed using mobile Internet communications with a server. The paper concentrates on the data acquisition process, using an alternative sensor network protocol to Bluetooth and manual data entry into a smartphone application and HTML5 web browser. PMID:22255009

  11. A flight instrumentation system for acquisition of atmospheric turbulence data

    NASA Technical Reports Server (NTRS)

    Meissner, C. W., Jr.

    1976-01-01

    A flight instrumentation system for the acquisition of atmospheric turbulence data is described. Airflow direction transducers and an impact pressure transducer are the primary instruments for measuring vertical and lateral gust velocity, and a sensitive incremental pressure transducer is used to measure longitudinal gust velocity. Airplane motions, sensed by an inertial platform, are subtracted from the primary measurements during postflight data reduction to yield true gust velocity time histories. Salient engineering features of the instrumentation are discussed, and a complete description of the instrumentation is presented.

  12. Spent Fuel Test - Climax data acquisition system operations manual

    SciTech Connect

    Nyholm, R.A.

    1983-01-01

    The Spent Fuel Test-Climax (SFT-C) is a test of the retrievable, deep geologic storage of commercially generated, spent nuclear reactor fuel in granite rock. Eleven spent fuel assemblies, together with 6 electrical simulators and 20 guard heaters, are emplaced 420 m below the surface in the Climax granite at the US Department of Energy Nevada Test Site. On June 2, 1978, Lawrence Livermore National Laboratory (LLNL) secured funding for the SFT-C, and completed spent fuel emplacement May 28, 1980. The multi-year duration test is located in a remote area and is unattended much of the time. An extensive array of radiological safety and geotechnical instrumentation is deployed to monitor the test performance. A dual minicomputer-based data acquisition system (DAS) collects and processes data from more than 900 analog instruments. This report documents the software element of the LLNL developed SFT-C Data Acquisition System. It defines the operating system and hardware interface configurations, the special applications software and data structures, and support software.

  13. Application of the MIAS methodology in design of the data acquisition system for wastewater treatment plant

    NASA Astrophysics Data System (ADS)

    Ćwikła, G.; Krenczyk, D.; Kampa, A.; Gołda, G.

    2015-11-01

    This paper presents application of MIAS (Manufacturing Information Acquisition System) methodology to develop customized data acquisition system supporting management of the Central Wastewater Treatment Plant (CWWTP) in Gliwice, Poland, being example of production systems leading continuous flow, automated production processes. Access to current data on the state of production system is a key to efficient management of a company, allowing fast reaction or even anticipation of future problems with equipment and reduction of waste. Overview of both analysis and synthesis of organisational solutions, data sources, data pre-processing and communication interfaces, realised according to proposed MIAS methodology, had been presented. The stage of analysis covered i.e.: organisational structure of the company, IT systems used in the company, specifics of technological processes, machines and equipment, structure of control systems, assignments of crew members, materials used in the technological processes. This paper also presents results of the stage of synthesis of technical and organisational solutions of MIAS for CWWTP, including proposed solutions covering MIAS architecture and connections with other IT systems, data sources in production system that are currently available and newly created, data preprocessing procedures, and necessary communication interfaces.

  14. 3D Image Acquisition System Based on Shape from Focus Technique

    PubMed Central

    Billiot, Bastien; Cointault, Frédéric; Journaux, Ludovic; Simon, Jean-Claude; Gouton, Pierre

    2013-01-01

    This paper describes the design of a 3D image acquisition system dedicated to natural complex scenes composed of randomly distributed objects with spatial discontinuities. In agronomic sciences, the 3D acquisition of natural scene is difficult due to the complex nature of the scenes. Our system is based on the Shape from Focus technique initially used in the microscopic domain. We propose to adapt this technique to the macroscopic domain and we detail the system as well as the image processing used to perform such technique. The Shape from Focus technique is a monocular and passive 3D acquisition method that resolves the occlusion problem affecting the multi-cameras systems. Indeed, this problem occurs frequently in natural complex scenes like agronomic scenes. The depth information is obtained by acting on optical parameters and mainly the depth of field. A focus measure is applied on a 2D image stack previously acquired by the system. When this focus measure is performed, we can create the depth map of the scene. PMID:23591964

  15. System and method for acquisition management of subject position information

    DOEpatents

    Carrender, Curt

    2007-01-23

    A system and method for acquisition management of subject position information that utilizes radio frequency identification (RF ID) to store position information in position tags. Tag programmers receive position information from external positioning systems, such as the Global Positioning System (GPS), from manual inputs, such as keypads, or other tag programmers. The tag programmers program each position tag with the received position information. Both the tag programmers and the position tags can be portable or fixed. Implementations include portable tag programmers and fixed position tags for subject position guidance, and portable tag programmers for collection sample labeling. Other implementations include fixed tag programmers and portable position tags for subject route recordation. Position tags can contain other associated information such as destination address of an affixed subject for subject routing.

  16. System and method for acquisition management of subject position information

    DOEpatents

    Carrender, Curt

    2005-12-13

    A system and method for acquisition management of subject position information that utilizes radio frequency identification (RF ID) to store position information in position tags. Tag programmers receive position information from external positioning systems, such as the Global Positioning System (GPS), from manual inputs, such as keypads, or other tag programmers. The tag programmers program each position tag with the received position information. Both the tag programmers and the position tags can be portable or fixed. Implementations include portable tag programmers and fixed position tags for subject position guidance, and portable tag programmers for collection sample labeling. Other implementations include fixed tag programmers and portable position tags for subject route recordation. Position tags can contain other associated information such as destination address of an affixed subject for subject routing.

  17. Data Acquisition System for Russian Arctic Magnetometer Network

    NASA Astrophysics Data System (ADS)

    Janzhura, A.; Troshichev, O. A.; Takahashi, K.

    2010-12-01

    Monitoring of magnetic activity in the auroral zone is very essential for space weather problem. The big part of northern auroral zone lies in the Russian sector of Arctica. The Russian auroral zone stations are located far from the proper infrastructure and communications, and getting the data from the stations is complicated and nontrivial task. To resolve this problem a new acquisition system for magnetometers was implemented and developed in last few years, with the magnetic data transmission in real time that is important for many forecasting purpose. The system, based on microprocessor modules, is very reliable in hush climatic conditions. The information from the magnetic sensors transmits to AARI data center by satellite communication system and is presented at AARI web pages. This equipment upgrading of Russian polar magnetometer network is supported by the international RapidMag program.

  18. Multispectral data acquisition and classification - Statistical models for system design

    NASA Technical Reports Server (NTRS)

    Huck, F. O.; Park, S. K.

    1978-01-01

    In this paper we relate the statistical processes that are involved in multispectral data acquisition and classification to a simple radiometric model of the earth surface and atmosphere. If generalized, these formulations could provide an analytical link between the steadily improving models of our environment and the performance characteristics of rapidly advancing device technology. This link is needed to bring system analysis tools to the task of optimizing remote sensing and (real-time) signal processing systems as a function of target and atmospheric properties, remote sensor spectral bands and system topology (e.g., image-plane processing), radiometric sensitivity and calibration accuracy, compensation for imaging conditions (e.g., atmospheric effects), and classification rates and errors.

  19. Data acquisition systems for the Sloan Digital Sky Survey

    SciTech Connect

    Petravick, D.; Berman, E.; MacKinnon, B.; Nicinski, T.; Pordes, R.; Sergey, G.; Rechenmacher, R.; Annis, J.; Kent, S.; McKay, T.; Stoughton, C.; Husby, D.

    1994-03-01

    The Sloan Digital Sky Survey (SDSS) will image {Pi} steradians about the north galactic cap in five filters, and acquire one million spectra using a dedicated 2.5 meter telescope at the Apache Point Observatory in New Mexico. The authors describe the data acquisition system for the survey`s three main detectors: an imaging camera, mounting 54 Tektronix charge-coupled devices (CCD); a pair of spectrographs, each mounting a pair of CCDs; and a smaller monitor telescope camera. The authors describe the system`s hardware and software architecture, and relate it to the survey`s special requirements for high reliability and need to understand its instrumentation in order to produce a consistent survey over a five year period.

  20. System design of the METC automatic data acquisition and control system

    SciTech Connect

    Goff, D. R.; Armstrong, D. L.

    1982-02-01

    A system of computer programs and hardware was developed by the Instrumentation Branch of the Morgantown Energy Technology Center (METC) to provide data acquisition and control features for research projects at the site. The Automatic Data Acquisition and Control System (ADACS) has the capability of servicing up to eight individual projects simultaneously, providing data acquisition, data feedback, and process control where needed. Several novel software features - including a data table driven program, extensive feedback in real time, free format English commands, and high reliability - were incorporated to provide these functions.

  1. Design of propellant acquisition systems for advanced cryogenic space propulsion systems

    NASA Technical Reports Server (NTRS)

    Burge, G. W.; Blackmon, J. B.; Castle, J. N.

    1973-01-01

    This paper presents results of work conducted to expand the technology base and evolve practical propellant surface tension acquisition system designs for future cryogenic space vehicles. Surface tension screen device channel flow analysis and supporting tests showed that reasonable mesh sizes could provide the required retention performance. Integrated subsystem studies and development showed that practical and effective screen surface tension acquisition devices could be designed for typical applications, but that other interfacing feed subsystems are often constrained by the design of the particular acquisition device. These constraints may dominate the total feed system performance.

  2. An effective data acquisition system using image processing

    NASA Astrophysics Data System (ADS)

    Poh, Chung-How; Poh, Chung-Kiak

    2005-12-01

    The authors investigate a data acquisition system utilising the widely available digital multi-meter and the webcam. The system is suited for applications that require sampling rates of less than about 1 Hz, such as for ambient temperature recording or the monitoring of the charging state of rechargeable batteries. The data displayed on the external digital readout is acquired into the computer through the process of template matching. MATLAB is used as the programming language for processing the captured 2-D images in this demonstration. A RC charging experiment with a time characteristic of approximately 33 s is setup to verify the accuracy of the image-to-data conversion. It is found that the acquired data matches the steady-state voltage value displayed by the digital meter after an error detection technique has been devised and implemented into the data acquisition script file. It is possible to acquire a number of different readings simultaneously from various sources with this imaging method by placing a number of digital readouts within the camera's field-of-view.

  3. Proposal for massively parallel data storage system

    NASA Technical Reports Server (NTRS)

    Mansuripur, M.

    1992-01-01

    An architecture for integrating large numbers of data storage units (drives) to form a distributed mass storage system is proposed. The network of interconnected units consists of nodes and links. At each node there resides a controller board, a data storage unit and, possibly, a local/remote user-terminal. The links (twisted-pair wires, coax cables, or fiber-optic channels) provide the communications backbone of the network. There is no central controller for the system as a whole; all decisions regarding allocation of resources, routing of messages and data-blocks, creation and distribution of redundant data-blocks throughout the system (for protection against possible failures), frequency of backup operations, etc., are made locally at individual nodes. The system can handle as many user-terminals as there are nodes in the network. Various users compete for resources by sending their requests to the local controller-board and receiving allocations of time and storage space. In principle, each user can have access to the entire system, and all drives can be running in parallel to service the requests for one or more users. The system is expandable up to a maximum number of nodes, determined by the number of routing-buffers built into the controller boards. Additional drives, controller-boards, user-terminals, and links can be simply plugged into an existing system in order to expand its capacity.

  4. The Wireless Data Acquisition System for the Vibration Table

    NASA Astrophysics Data System (ADS)

    Teng, Y. T.; Hu, X.

    2014-12-01

    The vibration table is a large-scaled tool used for inspecting the performance of seismometers. The output from a seismometer on the table can be directly monitored when the vibration table moves in certain pattern. Compared with other inspection methods, inspecting seismometers' performance indicators (frequency response, degree of linearity, sensitivity, lateral inhibition and dynamic range etc). using vibration tables is more intuitive. Therefore, the vibration tables are an essential testing part in developing new seismometers and seismometer quality control. Whereas, in practice, a cable is needed to connect the seismometer to the ground equipments for its signal outputs and power supply, that means adding a time-varying nonlinear spring between the vibration table and ground. The cable adds nonlinear feature to the table, distorts the table-board movement and bring extra errors to the inspecting work and affected the testing accuracy and precision. In face of this problem, we developed a wireless acquiring system for the vibration table. The system is consisted of a three-channel analog-to-digital conversion, an acquisition control part, local data storage, network interface, wireless router and power management, etc. The analog-to-digital conversion part uses a 24-digit high-precision converter, which has a programmable amplifier at the front end of its artificial circuit, with the function of matching outputs with different amplifier from the vibration table. The acquisition control part uses a 32 bit ARM processor, with low-power dissipation, minute extension and high performance. The application software platform is written in Linux to make the system convenient for multitasking work. Large volume local digital storage is achieved by a 32G SD card, which is used for saving real time acquired data. Data transmission is achieved by network interface and wireless router, which can simplify the application software by the supported TCP/IP protocol. Besides

  5. A 3D acquisition system combination of structured-light scanning and shape from silhouette

    NASA Astrophysics Data System (ADS)

    Sun, Changku; Tao, Li; Wang, Peng; He, Li

    2006-05-01

    A robust and accurate three dimensional (3D) acquisition system is presented, which is a combination of structured-light scanning and shape from silhouette. Using common world coordinate system, two groups of point data can be integrated into the final complete 3D model without any integration and registration algorithm. The mathematics model of structured-light scanning is described in detail, and the shape from silhouette algorithm is introduced as well. The complete 3D model of a cup with a handle is obtained successfully by the proposed technique. At last the measurement on a ball bearing is performed, with the measurement precision better than 0.15 mm.

  6. Proposal for hierarchical description of software systems

    NASA Technical Reports Server (NTRS)

    Thauboth, H.

    1973-01-01

    The programming of digital computers has developed into a new dimension full of diffculties, because the hardware of computers has become so powerful that more complex applications are entrusted to computers. The costs of software development, verification, and maintenance are outpacing those of the hardware and the trend is toward futher increase of sophistication of application of computers and consequently of sophistication of software. To obtain better visibility into software systems and to improve the structure of software systems for better tests, verification, and maintenance, a clear, but rigorous description and documentation of software is needed. The purpose of the report is to extend the present methods in order to obtain a documentation that better reflects the interplay between the various components and functions of a software system at different levels of detail without losing the precision in expression. This is done by the use of block diagrams, sequence diagrams, and cross-reference charts. In the appendices, examples from an actual large sofware system, i.e. the Marshall System for Aerospace Systems Simulation (MARSYAS), are presented. The proposed documentation structure is compatible to automation of updating significant portions of the documentation for better software change control.

  7. Acquisition/expulsion system for earth orbital propulsion system study. Volume 5: Earth storable design

    NASA Technical Reports Server (NTRS)

    1973-01-01

    A comprehensive analysis and parametric design effort was conducted under the earth-storable phase of the program. Passive Acquisition/expulsion system concepts were evaluated for a reusable Orbital Maneuvering System (OMS) application. The passive surface tension technique for providing gas free liquid on demand was superior to other propellant acquisition methods. Systems using fine mesh screens can provide the requisite stability and satisfy OMS mission requirements. Both fine mesh screen liner and trap systems were given detailed consideration in the parametric design, and trap systems were selected for this particular application. These systems are compatible with the 100- to 500-manned mission reuse requirements.

  8. An automated data acquisition system for isolated tissue studies.

    PubMed

    Gross, D M; Weitz, D

    1982-09-01

    The automation of an isolated atria assay is described. Data acquisition, operation of the strip chart recorder, data reduction and manipulation and generation of notebook pages showing final EC50's, dose-ratios and local pA2's has been completely automated. The data are acquired via a SYM-1 (6502 CPU) 8-bit single board computer running an assembly language program stored on an EPROM chip. The data from a physiological recorder system are stored by the SYM-1 and, at the conclusion of the experiment, transmitted to a DEC MINC-11 microminicomputer running a sequence of programs in BASIC for the mathematical manipulation of the data and the automatic generation of lab notebook pages. The automated system totally eliminates hand transcription of data, manual plotting of curves and mathematical errors.

  9. System of acquisition and processing of images of dynamic speckle

    NASA Astrophysics Data System (ADS)

    Vega, F.; >C Torres,

    2015-01-01

    In this paper we show the design and implementation of a system to capture and analysis of dynamic speckle. The device consists of a USB camera, an isolated system lights for imaging, a laser pointer 633 nm 10 mw as coherent light source, a diffuser and a laptop for processing video. The equipment enables the acquisition and storage of video, also calculated of different descriptors of statistical analysis (vector global accumulation of activity, activity matrix accumulation, cross-correlation vector, autocorrelation coefficient, matrix Fujji etc.). The equipment is designed so that it can be taken directly to the site where the sample for biological study and is currently being used in research projects within the group.

  10. A direct-to-drive neural data acquisition system.

    PubMed

    Kinney, Justin P; Bernstein, Jacob G; Meyer, Andrew J; Barber, Jessica B; Bolivar, Marti; Newbold, Bryan; Scholvin, Jorg; Moore-Kochlacs, Caroline; Wentz, Christian T; Kopell, Nancy J; Boyden, Edward S

    2015-01-01

    Driven by the increasing channel count of neural probes, there is much effort being directed to creating increasingly scalable electrophysiology data acquisition (DAQ) systems. However, all such systems still rely on personal computers for data storage, and thus are limited by the bandwidth and cost of the computers, especially as the scale of recording increases. Here we present a novel architecture in which a digital processor receives data from an analog-to-digital converter, and writes that data directly to hard drives, without the need for a personal computer to serve as an intermediary in the DAQ process. This minimalist architecture may support exceptionally high data throughput, without incurring costs to support unnecessary hardware and overhead associated with personal computers, thus facilitating scaling of electrophysiological recording in the future.

  11. A direct-to-drive neural data acquisition system.

    PubMed

    Kinney, Justin P; Bernstein, Jacob G; Meyer, Andrew J; Barber, Jessica B; Bolivar, Marti; Newbold, Bryan; Scholvin, Jorg; Moore-Kochlacs, Caroline; Wentz, Christian T; Kopell, Nancy J; Boyden, Edward S

    2015-01-01

    Driven by the increasing channel count of neural probes, there is much effort being directed to creating increasingly scalable electrophysiology data acquisition (DAQ) systems. However, all such systems still rely on personal computers for data storage, and thus are limited by the bandwidth and cost of the computers, especially as the scale of recording increases. Here we present a novel architecture in which a digital processor receives data from an analog-to-digital converter, and writes that data directly to hard drives, without the need for a personal computer to serve as an intermediary in the DAQ process. This minimalist architecture may support exceptionally high data throughput, without incurring costs to support unnecessary hardware and overhead associated with personal computers, thus facilitating scaling of electrophysiological recording in the future. PMID:26388740

  12. A direct-to-drive neural data acquisition system

    PubMed Central

    Kinney, Justin P.; Bernstein, Jacob G.; Meyer, Andrew J.; Barber, Jessica B.; Bolivar, Marti; Newbold, Bryan; Scholvin, Jorg; Moore-Kochlacs, Caroline; Wentz, Christian T.; Kopell, Nancy J.; Boyden, Edward S.

    2015-01-01

    Driven by the increasing channel count of neural probes, there is much effort being directed to creating increasingly scalable electrophysiology data acquisition (DAQ) systems. However, all such systems still rely on personal computers for data storage, and thus are limited by the bandwidth and cost of the computers, especially as the scale of recording increases. Here we present a novel architecture in which a digital processor receives data from an analog-to-digital converter, and writes that data directly to hard drives, without the need for a personal computer to serve as an intermediary in the DAQ process. This minimalist architecture may support exceptionally high data throughput, without incurring costs to support unnecessary hardware and overhead associated with personal computers, thus facilitating scaling of electrophysiological recording in the future. PMID:26388740

  13. Development of Data Acquisition System for Consolidated Undrained Triaxial Test

    NASA Astrophysics Data System (ADS)

    Lee, L. M.; Yasuo, T.; Wei, L. C.; Yuan, L. C.

    2016-07-01

    Consolidated Undrained (CU) triaxial test is a common laboratory test used in practice for determining effective and total shear strength parameters of soil. This paper reported works carried out to develop a data acquisition system for a self-assembled triaxial machine. The developed system was capable of acquiring signals from the installed sensors (i.e. pressure transducer, load cell, LVDT), interpreting and presenting the data in real-time graphs. In addition, the study highlighted the advantages of performing double vacuuming method to saturate the soil specimen. The saturation can be obtained quicker and at a significantly lower cell pressure compared to the conventional stepwise increment of back pressure and cell pressure method.

  14. Proposed Modification to the Plutonium Systemic Model.

    PubMed

    Konzen, Kevin; Miller, Scott; Brey, Richard

    2015-10-01

    The currently accepted biokinetic model for plutonium distribution within the human body was recommended by the International Commission on Radiological Protection in publication 67. This model was developed from human and animal studies and behavioral knowledge acquired from other known bone-seeking radionuclides. The biokinetic model provides a mathematical means of predicting the distribution, retention, and clearance of plutonium within the human body that may be used in deriving organ, tissue, and whole body dose. This work proposed a modification to the ICRP 67 systemic model for plutonium that incorporated the latest knowledge acquired from recent human injection studies with physiologically based improvements. In summary, the changes included a separation of the liver compartments, removed the intermediate soft tissue-to-bladder pathway, and added pathways from the blood compartment to both the cortical and trabecular bone volumes. The proposed model provided improved predictions for several bioassay indicators compared to the ICRP 67 model while also maintaining its basic structure. Additionally, the proposed model incorporated physiologically based improvements for the liver and skeleton and continued to ensure efficient coupling with intake biokinetic models.

  15. Evolutionary analysis of iron (Fe) acquisition system in Marchantia polymorpha.

    PubMed

    Lo, Jing-Chi; Tsednee, Munkhtsetseg; Lo, Ying-Chu; Yang, Shun-Chung; Hu, Jer-Ming; Ishizaki, Kimitsune; Kohchi, Takayuki; Lee, Der-Chuen; Yeh, Kuo-Chen

    2016-07-01

    To acquire appropriate iron (Fe), vascular plants have developed two unique strategies, the reduction-based strategy I of nongraminaceous plants for Fe(2+) and the chelation-based strategy II of graminaceous plants for Fe(3+) . However, the mechanism of Fe uptake in bryophytes, the earliest diverging branch of land plants and dominant in gametophyte generation is less clear. Fe isotope fractionation analysis demonstrated that the liverwort Marchantia polymorpha uses reduction-based Fe acquisition. Enhanced activities of ferric chelate reductase and proton ATPase were detected under Fe-deficient conditions. However, M. polymorpha did not show mugineic acid family phytosiderophores, the key components of strategy II, or the precursor nicotianamine. Five ZIP (ZRT/IRT-like protein) homologs were identified and speculated to be involved in Fe uptake in M. polymorpha. MpZIP3 knockdown conferred reduced growth under Fe-deficient conditions, and MpZIP3 overexpression increased Fe content under excess Fe. Thus, a nonvascular liverwort, M. polymorpha, uses strategy I for Fe acquisition. This system may have been acquired in the common ancestor of land plants and coopted from the gametophyte to sporophyte generation in the evolution of land plants. PMID:26948158

  16. A design of camera simulator for photoelectric image acquisition system

    NASA Astrophysics Data System (ADS)

    Cai, Guanghui; Liu, Wen; Zhang, Xin

    2015-02-01

    In the process of developing the photoelectric image acquisition equipment, it needs to verify the function and performance. In order to make the photoelectric device recall the image data formerly in the process of debugging and testing, a design scheme of the camera simulator is presented. In this system, with FPGA as the control core, the image data is saved in NAND flash trough USB2.0 bus. Due to the access rate of the NAND, flash is too slow to meet the requirement of the sytsem, to fix the problem, the pipeline technique and the High-Band-Buses technique are applied in the design to improve the storage rate. It reads image data out from flash in the control logic of FPGA and output separately from three different interface of Camera Link, LVDS and PAL, which can provide image data for photoelectric image acquisition equipment's debugging and algorithm validation. However, because the standard of PAL image resolution is 720*576, the resolution is different between PAL image and input image, so the image can be output after the resolution conversion. The experimental results demonstrate that the camera simulator outputs three format image sequence correctly, which can be captured and displayed by frame gather. And the three-format image data can meet test requirements of the most equipment, shorten debugging time and improve the test efficiency.

  17. Naval Underwater Systems Center Torpedo Data Acquisition center: Dry system conceptual design report

    SciTech Connect

    Jordan, J.K.; Napier, R.W.; Scudiere, M.B.

    1988-05-01

    A digital data acquisition system, the ''wet'' system, is being developed to acquire and record sensor data in torpedo test vehicles. This document defines the conceptual design for a ''dry'' system which will be used for programming the wet system, handling the test data, and performing ''quick-look'' signal analysis.

  18. Data acquisition system for the BESS-Polar experiment

    NASA Astrophysics Data System (ADS)

    Orito, Reiko

    The Balloon-borne experiment with a superconducting spectrometer on a long duration balloon flight in Antarctica (BESS-Polar) has been carried out to investigate elementary particle phenomena in the early universe through the measurement of cosmic-ray antiparticles[1]. To realize the long term observation over 20 days, the data acquisition system(DAQ) for the BESS-Polar spectrometer has been newly developed with a base of previous BESS-DAQ[2]. The BESS-Polar DAQ system consists of low-power front end electronics(FEE)[3], high speed processors, large capacity data storage, telemetry communicating system, monitors for the spectrometer, and the solar-panel power supply system. The data from the FEEs(TDCs, QDCs, FADCs) are converted to USB2.0 signal and sent to the dual core processor with a CompactPCI bus. The event is built(˜3k byte/event) and recorded to the data storage with an array of sixteen 1TB-HDDs. The data recording system is installed in the compact pressurized data vessel with a proper thermal treatment. The dead time of data acquisition was below 20% at 2.5kHz trigger rate during the flight. The total power consumption of the BESS- Polar spectrometer was 500W. The power lines from the solar panels to the spectrometer are controlled by the programmable TOSHIBA Neuron chips and the low-power PC104 system. The monitor data and the telemetry are also received by original modules on the PC104 system. This system was operated during the scientific run for 24.5 days over Antarctica and successfully recorded 4.6 billion cosmic-ray events during the solar minimum period in 2007-2008. All the DAQ system was well operated without any critical problem. In this presentation, the DAQ system for the BESS-Polar experiment and its performances will be reported. References: [1] A.Yamamoto et al., Nuclear Physics B, Vol.166, 2007, pp.62-67 [2] Y. Ajima et al., Nucl. Instr. and Methods , A 443, 2000, pp.71-100 [3] M.Sasaki et al., 29th ICRC, Pune (2005) 3, pp.421-424

  19. Proposed Science Requirements and Acquisition Priorities for the First Mars Sample Return

    NASA Technical Reports Server (NTRS)

    Agee, C. B.; Bogard, D. D.; Draper, D. S.; Jones, J. H.; Meyer , C., Jr.; Mittlefehldt, D. W.

    2000-01-01

    A sample return mission is an important next step in the exploration of Mars. The first sample return should come early in the program time-line because the science derived from earth-based analyses of samples provides crucial "ground truth" needed for further exploration planning, enhancement of remote measurements, and achieving science goals and objectives that include: (1) the search for environments that may support life and any indicators of the past or present existence of life, (2) understanding the history of water and climate on Mars, (3) understanding the evolution of Mars as a planet. Returned samples from Mars will have unique value because they can be studied by scientists worldwide using the most powerful analytical instruments available. Furthermore, returned Mars samples can be preserved for studies by future generations of scientists using new techniques and addressing new issues in Mars science. To ensure a high likelihood of success, the first sample return strategy should be simple and focused. We outline a fundamental set of sample requirements and acquisition priorities for Mars sample return.

  20. TDAS: The Thermal Expert System (TEXSYS) data acquisition system

    NASA Technical Reports Server (NTRS)

    Hack, Edmund C.; Healey, Kathleen J.

    1987-01-01

    As part of the NASA Systems Autonomy Demonstration Project, a thermal expert system (TEXSYS) is being developed. TEXSYS combines a fast real time control system, a sophisticated human interface for the user and several distinct artificial intelligence techniques in one system. TEXSYS is to provide real time control, operations advice and fault detection, isolation and recovery capabilities for the space station Thermal Test Bed (TTB). TEXSYS will be integrated with the TTB and act as an intelligent assistant to thermal engineers conducting TTB tests and experiments. The results are presented from connecting the real time controller to the knowledge based system thereby creating an integrated system. Special attention will be paid to the problem of filtering and interpreting the raw, real time data and placing the important values into the knowledge base of the expert system.

  1. Infrared spectrometry studies: Spectral digital data acquisition system (1971 version)

    NASA Technical Reports Server (NTRS)

    Lu, L.; Lyon, R. J. P.

    1971-01-01

    The construction of the Stanford Spectral Digital Data Acquisition System is described. The objective of the system is to record both the spectral distribution of incoming radiation from the rock samples measured by the spectroradiometer (Exotech Model 10-34 Circular Variable Filter Infrared Spectroradiometer) together with other weather information. This system is designed for both laboratory and field measurement programs. The multichannel inputs (8 channels) of the system are as follows: Ch 1 the Spectro-radiometer, Ch 2 the radiometer (PRT-5), and Ch 3 to Ch 8 for the weather information. The system records data from channel 1 and channel 2 alternately for 48 times, before a fast sweep across the six weather channels, to form a single scan in the scan counter. The operation is illustrated in a block diagram, and the theory of operation is described. The outputs are written on a 7-track magnetic tape with IBM compatible form. The format of the tape and the playback computer programs are included. The micro-pac digital modules and a CIPHER model 70 tape recorder (Cipher Data Products) are used. One of the major characteristics of this system is that it is externally clocked by the spectroradiometer instead of taking data at intervals of various wavelengths by using internal-clocking.

  2. Naval Underwater Systems Center torpedo data acquisition system design update

    SciTech Connect

    Adams, D.J.; Beshears, D.L.; Capps, G.J.; Jordan, J.K.; Napier, R.W.; Ott, G.W.; Scudiere, M.B.; White, C.P.; Nodine, R.N.; Todd, R.A.

    1988-10-01

    In the process of developing technology for torpedo applications, the Naval Underwater Systems Center test vehicles are instrumented with sensors (and signal processors), and their outputs are recorded during in water exercises. This paper defines the design for both the wet'' and dry'' systems. The wet system will be the on-board torpedo equipment used to monitor and record a multitude of transducer of transducer signals. The dry system will be used for programming the wet system, handling the test data, and performing quick-look signal analyses. The system will be used to monitor, record, and analyze an enormous volume of data from transducer signals during either routine or development in-water exercises. 24 figs.

  3. Naval underwater systems center torpedo data acquisition system: Wet system conceptual design report

    SciTech Connect

    Adams, D.J.; Beshears, D.L.; Capps, G.J.; Jordan, J.K.; Ott, G.W.; Scudiere, M.B.; White, C.P.; Nodine, R.N.; Todd, R.A.

    1988-04-01

    In the process of developing technology for torpedo applications, Naval test vehicles are instrumented with sensors (and signal processors), and their outputs are recorded during in-water exercises. This paper defines the coneptual design for a state-of-the-art on-board torpedo digital data acquisition system which will be used to monitor and record an enormous volume of data from transducer signals during either routine or development in-water exercises.

  4. 76 FR 75512 - Defense Federal Acquisition Regulation Supplement: Proposal Adequacy Checklist (DFARS Case 2011...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-02

    ... the costs; such as, existing excess material, changes in production methods, make-or-buy decisions...: I. Background This proposed rule supports one of DoD's Better Buying Power initiatives by...'s Better Buying Power initiatives. The objective of the rule is to ensure that offerors...

  5. 77 FR 60170 - Americans With Disabilities Act: Proposed Circular Chapter, Vehicle Acquisition

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-02

    ... published in the Federal Register on April 11, 2000 (65 FR 19477). Docket: For access to the docket to read... Federal Transit Administration Americans With Disabilities Act: Proposed Circular Chapter, Vehicle... circular chapter and request for comments. SUMMARY: The Federal Transit Administration (FTA) has placed...

  6. Spallation neutron source/proposed rf system

    SciTech Connect

    Meth, M.; Brennan, J.M.

    1993-09-30

    The rf system for the synchrotrons of the spallation neutron source is designed to accelerate 1.4 {times} 10{sup 14} protons/pulse to an energy of 3.6 GeV. Injection energy is 600 MeV. The synchrotron repetition frequency is 30 Hz, with a 50% duty factor. The choice of operating frequency is somewhat arbitrary. The authors propose a low frequency of 1.3 to 1.6 MHz, which is the second harmonic of the revolution frequency. The advantages of such a low frequency system are: (1) There will be two bunches in the machines and the time between bunches will be sufficiently long to allow for the rise time of the extraction kicker. No missing bunches will be necessary, which simplifies injection, and transient beam loading problems are avoided. (2) With only two bunches there are no unstable coupled-bunch modes of longitudinal instability. (3) In multi-gap low frequency cavities the transient time factor is essentially unity because the rf wavelength is much longer than the cavity dimensions. (4) Cavities in this low frequency range are basically lumped-element type structures, where the sources of the inductance and capacitance are clearly identified. This allows effective control of higher order mode impedances in such cavities. (5) Ferrite-loaded low-frequency cavities are necessarily low impedance structures; ferrites are lossy. This low impedance makes it possible to achieve system stability without large amounts of feedback in a heavily beam loaded system. (6) BNL has a good deal of experience in building rf systems in this range of frequency, voltage, and power level. This report outlines the essential parameters of a practical rf system for the synchrotrons of the Spallation Neutron Source. The design uses materials, ferrites and vacuum tubes, that are commercially available and with which the laboratory has recent experience.

  7. Ecological baseline study of the Yakima Firing Center proposed land acquisition: A Preliminary Report

    SciTech Connect

    Rogers, L.E.; Beedlow, P.A.; Eberhardt, L.E.; Dauble, D.D.; Fitzner, R.E.

    1988-02-01

    A baseline census was conducted from October 1987 to Janurary 1988 on the property identified for possible expansion of the Yakima Firing Center. These studies provide general descriptions of the major plant communities presentand animal inhabitants during the late fall and winter study period. A vegetation map derived from a combination of onsite surveillance and remotely sensed imagery is also provided as part of this report. Through January 1988, 13 wildlife species of special interest to state and federal agencies, in addition to ducks and geese, were observed on the proposed expansion area. Then raptorial bird species were observed in the area, including bald eagles, golden eagles, and prairie falcons. Upland game bird species, such as sage grouse, California quail, chuckars, and gray (Hungarian) partridge were present. Loggerhead shrikes, a species of special interest, were also observed on the site. Estimates of waterfowl abundance are included for the Priest Rapids Pool of the Columbia River, which includes the proposed river crossing sites. The number of waterfowl on the proposed crossing areas were comparatively low during the winter of 1986 to 1987 and high in 1987 to 1988. Bald eagles ad common loons were observed on the crossing areas. Six small mammal species were captured during this study period;one, the sagebrush vole, is a species of special interest. Two large animal species, mule deer and elk, were noted on the site. Beaver were the only furbearig animals noted to date. Rainbow trout were the only fish species collected within the proposed northern expansion area. The distribution of fall chinook salmon spawning areas was documented within the proposed river crossing areas. 3 refs., 7 figs., 3 tabs.

  8. Effect of Vibration on Retention Characteristics of Screen Acquisition Systems

    NASA Technical Reports Server (NTRS)

    Tegart, J. R.; Park, A. C.

    1977-01-01

    An analytical and experimental investigation of the effect of vibration on the retention characteristics of screen acquisition systems was performed. The functioning of surface tension devices using fine-mesh screens requires that the pressure differential acting on the screen be less than its pressure retention capability. When exceeded, screen breakdown will occur and gas-free expulsion of propellant will no longer be possible. An analytical approach to predicting the effect of vibration was developed. This approach considers the transmission of the vibration to the screens of the device and the coupling of the liquid and the screen in establishing the screen response. A method of evaluating the transient response of the gas/liquid interface within the screen was also developed.

  9. Single transmission line interrogated multiple channel data acquisition system

    DOEpatents

    Fasching, George E.; Keech, Jr., Thomas W.

    1980-01-01

    A single transmission line interrogated multiple channel data acquisition system is provided in which a plurality of remote station/sensor circuits each monitors a specific process variable and each transmits measurement values over a single transmission line to a master interrogating station when addressed by said master interrogating station. Typically, as many as 330 remote stations may be parallel connected to the transmission line which may exceed 7,000 feet. The interrogation rate is typically 330 stations/second. The master interrogating station samples each station according to a shared, charging transmit-receive cycle. All remote station address signals, all data signals from the remote stations/sensors and all power for all of the remote station/sensors are transmitted via a single continuous terminated coaxial cable. A means is provided for periodically and remotely calibrating all remote sensors for zero and span. A provision is available to remotely disconnect any selected sensor station from the main transmission line.

  10. Computer-assisted knowledge acquisition for hypermedia systems

    NASA Technical Reports Server (NTRS)

    Steuck, Kurt

    1990-01-01

    The usage of procedural and declarative knowledge to set up the structure or 'web' of a hypermedia environment is described. An automated knowledge acquisition tool was developed that helps a knowledge engineer elicit and represent an expert's knowledge involved in performing procedural tasks. The tool represents both procedural and prerequisite, declarative knowledge that supports each activity performed by the expert. This knowledge is output and subsequently read by a hypertext scripting language to generate the link between blank, but labeled cards. Each step of the expert's activity and each piece of supporting declarative knowledge is set up as an empty node. An instructional developer can then enter detailed instructional material concerning each step and declarative knowledge into these empty nodes. Other research is also described that facilitates the translation of knowledge from one form into a form more readily useable by computerized systems.

  11. Integration of the trigger and data acquisition systems in ATLAS

    NASA Astrophysics Data System (ADS)

    Abolins, M.; Adragna, P.; Aleksandrov, E.; Aleksandrov, I.; Amorim, A.; Anderson, K.; Anduaga, X.; Aracena, I.; Asquith, L.; Avolio, G.; Backlund, S.; Badescu, E.; Baines, J.; Barria, P.; Bartoldus, R.; Batreanu, S.; Beck, H. P.; Bee, C.; Bell, P.; Bell, W. H.; Bellomo, M.; Benslama, K.; Berge, D.; Berger, N.; Berry, T.; Biglietti, M.; Blair, R. E.; Bogaerts, A.; Bold, T.; Bosman, M.; Boyd, J.; Brelier, B.; B-Chromek, D.; Buttar, C.; Campanelli, M.; Caprini, M.; Carlino, G.; Casadei, D.; Casado, P.; Cataldi, G.; Cimino, D.; Ciobotaru, M; . Clements, D.; Coccaro, A.; Muino, P. C.; Conventi, F.; C-Radu, A.; Costa, M. J.; Torres, R. C.; Cranfield, R.; Cranmer, K.; Crone, G.; Dam, M.; Damazio, D.; Dawson, I.; Dawson, J.; Simoes, J. D. A.; Cecco, S. D.; Santo, A. D.; Della Pietra, M.; Delsart, P.-A.; Demers, S.; Demirkoz, B.; Mattia, A. D.; Dionisi, C.; Djilkibaev, R.; Dobinson, R.; Dobson, M.; Dotti, A.; Dova, M.; Drake, G.; Dufour, M.-A.; Eckweiler, S.; Ehrenfeld, W.; Eifert, T.; Ellis, N.; Emeliyanov, D.; Lima, D. E. F. d.; Ermoline, Y.; Eschrich, I.; Facius, K.; Falciano, S.; Farthouat, P.; Feng, E.; Ferland, J.; Ferrari, R.; Ferrer, M. L.; Fischer, G.; F-Martin, T.; Francis, D.; Gadomski, S.; Elejabarrieta, H. G.; Gaudio, G.; Gaumer, O.; George, S.; Giagu, S.; Goncalo, R.; Gorini, B.; Gorini, E.; Gowdy, S.; G-Bold, I.; Grancagnolo, S.; Green, B.; Haas, S.; Haberichter, W.; Hadavand, H.; Haeberli, C.; Haller, J.; Hamilton, A.; Hansen, J. R.; Hauschild, M.; Hauser, R.; Head, S.; Hillier, S.; Hoecker, A.; Hryn'ova, T.; H-Jones, R.; Huston, J.; Idarraga, J.; Igonkina, O.; Inada, M.; Jain, V.; Johns, K.; Joos, M.; Kama, S.; Kanaya, N.; Kazarov, A.; Kehoe, R.; Khoriauli, G.; Kieft, G.; Kilvington, G.; Kirk, J.; Kiyamura, H.; Klous, S.; Kolos, S.; Kono, T.; Konstantinidis, N.; Korcyl, K.; Kordas, K.; Kotov, V.; Krasznahorkay, A.; Kubota, T.; Kugel, A.; Kuhn, D.; Kurasige, H.; Kuwabara, T.; Kwee, R.; Lankford, A.; LeCompte, T.; Leahu, L.; Leahu, M.; Ledroit, F.; Miotto, G. L.; Lei, X.; Lellouch, D.; Leyton, M.; Li, S.; Lim, H.; Lohse, T.; Losada, M.; Luci, C.; Luminari, L.; Mapelli, L.; Martin, B.; Martin, B. T.; Marzano, F.; Masik, J.; McMahon, T.; McPherson, R.; Medinnis, M.; Meessen, C.; Meirosu, C.; Messina, A.; Mincer, A.; Mineev, M.; Misiejuk, A.; Moenig, K.; Monticelli, F.; Moraes, A.; Moreno, D.; Morettini, P.; Garcia, R. M.; Nagano, K.; Nagasaka, Y.; Negri, A.; Nemethy, P.; Neusiedl, A.; Nisati, A.; Nozicka, M.; Omachi, C.; Osculati, B.; Osuna, C.; Padilla, C.; Panikashvili, N.; Parodi, F.; Pasqualucci, E.; Pauly, T.; Perera, V.; Perez, E.; Reale, V. P.; Petersen, J.; Piegaia, R.; Pilcher, J.; Pinzon, G.; Pope, B.; Potter, C.; Primavera, M.; Radescu, V.; Rajagopalan, S.; Renkel, P.; Rescigno, M.; Rieke, S.; Risler, C.; Riu, I.; Robertson, S.; Roda, C.; Rodriguez, D.; Rogriquez, Y.; Ryabov, Y.; Ryan, P.; Salvatore, D.; Santamarina, C.; Rios, C. S.; Scannicchio, D.; Scannicchio, D. A.; Schiavi, C.; Schlereth, J.; Scholtes, I.; Schooltz, D.; Scott, W.; Segura, E.; Shimbo, N.; Sidoti, A.; Siragusa, G.; Sivoklokov, S.; Sloper, J. E.; Smizanska, M.; Soloviev, I.; Soluk, R.; Spagnolo, S.; Spiwoks, R.; Stancu, S.; Steinberg, P.; Stelzer, J.; Stradling, A.; Strom, D.; Strong, J.; Su, D.; Sushkov, S.; Sutton, M.; Szymocha, T.; Tapprogge, S.; Tarem, S.; Tarem, Z.; T-Dias, P.; Tokoshuku, K.; Torrence, E.; Touchard, F.; Tremblet, L.; Tripiana, M.; Usai, G.; Vachon, B.; Vandelli, W.; Ventura, A.; Vercesi, V.; Vermeulen, J.; Schmitt, J. V. D.; Wang, M.; Watson, A.; Wengler, T.; Werner, P.; W-Ellis, S.; Wickens, F.; Wiedenmann, W.; Wielers, M.; Wilkens, H.; Winklmeier, F.; Woehrling, E.-E.; Wu, S.-L.; Wu, X.; Xella, S.; Yamazaki, Y.; Yu, M.; Zema, F.; Zhang, J.; Zhao, L.; Zobernig, H.; dos Anjos, A.; zur Nedden, M.; Özcan, E.; Ünel, G.

    2008-07-01

    During 2006 and the first half of 2007, the installation, integration and commissioning of trigger and data acquisition (TDAQ) equipment in the ATLAS experimental area have progressed. There have been a series of technical runs using the final components of the system already installed in the experimental area. Various tests have been run including ones where level 1 preselected simulated proton-proton events have been processed in a loop mode through the trigger and dataflow chains. The system included the readout buffers containing the events, event building, level 2 and event filter trigger algorithms. The scalability of the system with respect to the number of event building nodes used has been studied and quantities critical for the final system, such as trigger rates and event processing times, have been measured using different trigger algorithms as well as different TDAQ components. This paper presents the TDAQ architecture, the current status of the installation and commissioning and highlights the main test results that validate the system.

  12. Data acquisition system for KOMAC beam monitoring using EPICS middleware

    NASA Astrophysics Data System (ADS)

    Song, Young-Gi

    2015-10-01

    The beam diagnostics instrument used to measure the beam properties is one of the important devices for the 100-MeV proton linear accelerator of the KOrea Multi-purpose Accelerator Complex (KOMAC). A data acquisition system (DAQ) is required to collect the output beam signals conditioned in the analog front-end circuitry of a beam loss monitor (BLM) and a beam position monitor (BPM). The electrical beam signal must be digitized, and the sampling has to be synchronized to a global timing system that produces a pulse signal for the pulsed beam operation. The digitized data must be accessible by the experimental physics and industrial control system (EPICS)-based control system, which manages all accelerator control. An input output controller (IOC), which runs Linux on a central process unit (CPU) module with a peripheral component interconnect (PCI) express-based Analog-to-digital converter (ADC) card, has been adopted to satisfy the requirements. An associated Linux driver and EPICS device support module have also been developed. The IOC meets the requirements, and the development and maintenance of software for the IOC is very efficient. In this paper, the details of the DAQ system for the BLM and the BPM with the introduction of the KOMAC beam-diagnostics devices, along with the performance, are described.

  13. Advanced Data Acquisition Systems with Self-Healing Circuitry

    NASA Technical Reports Server (NTRS)

    Larson, William E.; Ihlefeld, Curtis M.; Medelius, Pedro J.; Delgado, H. (Technical Monitor)

    2001-01-01

    Kennedy Space Center's Spaceport Engineering & Technology Directorate has developed a data acquisition system that will help drive down the cost of ground launch operations. This system automates both the physical measurement set-up function as well as configuration management documentation. The key element of the system is a self-configuring, self-calibrating, signal-conditioning amplifier that automatically adapts to any sensor to which it is connected. This paper will describe the core technology behind this device and the automated data system in which it has been integrated. The paper will also describe the revolutionary enhancements that are planned for this innovative measurement technology. All measurement electronics devices contain circuitry that, if it fails or degrades, requires the unit to be replaced, adding to the cost of operations. Kennedy Space Center is now developing analog circuits that will be able to detect their own failure and dynamically reconfigure their circuitry to restore themselves to normal operation. This technology will have wide ranging application in all electronic devices used in space and ground systems.

  14. Integration of the Trigger and Data Acquisition Systems in ATLAS

    SciTech Connect

    Abolins, M.; Adragna, P.; Aleksandrov, E.; Aleksandrov, I.; Amorim, A.; Anderson, K.; Anduaga, X.; Aracena, I.; Asquith, L.; Avolio, G.; Backlund, S.; Badescu, E.; Baines, J.; Barria, P.; Bartoldus, R.; Batreanu, S.; Beck, H.P.; Bee, C.; Bell, P.; Bell, W.H.; Bellomo, M.; /more authors..

    2011-11-09

    During 2006 and the first half of 2007, the installation, integration and commissioning of trigger and data acquisition (TDAQ) equipment in the ATLAS experimental area have progressed. There have been a series of technical runs using the final components of the system already installed in the experimental area. Various tests have been run including ones where level 1 preselected simulated proton-proton events have been processed in a loop mode through the trigger and dataflow chains. The system included the readout buffers containing the events, event building, level 2 and event filter trigger algorithms. The scalability of the system with respect to the number of event building nodes used has been studied and quantities critical for the final system, such as trigger rates and event processing times, have been measured using different trigger algorithms as well as different TDAQ components. This paper presents the TDAQ architecture, the current status of the installation and commissioning and highlights the main test results that validate the system.

  15. A flexible computerized system for environmental data acquisition and transmission

    NASA Astrophysics Data System (ADS)

    Zappalà, G.

    2009-04-01

    In recent years increasing importance has been addressed to the knowledge of the marine environment, either to help detecting and understanding global climate change phenomena, or to protect and preserve those coastal areas, where multiple interests converge (linked to the tourism, recreational or productive activities…) and which suffer greater impact from anthropogenic activities; this has in turn stimulated the start of research programs devoted to the monitoring and surveillance of these particular zones, coupling the needs for knowledge, sustainable development and exploitation of natural resources. There is an increasing need to have data available in real time or near real time in order to intervene in emergency situations. Cabled or wireless data transmission can be used. The first allows the transmission of a higher amount of data only in coastal sites, while the second gives a bigger flexibility in terms of application to different environments; more, using mobile phone services (either terrestrial or satellite), it is possible to allocate the data centre in the most convenient place, without any need of proximity to the sea. Traditional oceanographic techniques, based on ship surveys, hardly fit the needs of operational oceanography, because of their high cost and fragmentary nature, both in spatial and temporal domains. To obtain a good synopticity, it is necessary to complement traditional ship observations with measurements from fixed stations (buoys moored in sites chosen to be representative of wider areas, or to constitute a sentinel against the arrival of pollutants), satellite observations, use of ships of opportunity and of newly developed instruments, like the gliders, or towed sliding devices, like the SAVE. Modern instruments rely on an electronic heart; an integrated hardware-software system developed in Messina is here presented, used in various versions to control data acquisition and transmission on buoys or on ship

  16. 75 FR 32635 - Defense Acquisition Regulations System; Defense Federal Acquisition Regulation Supplement...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-08

    ... Regulation Supplement; Balance of Payments Program Exemption for Commercial Information Technology... Defense Federal Acquisition Regulation Supplement (DFARS) to implement the exemption from the Balance of... implement in the clauses at 252.225-7044, Balance of Payments Program--Construction Material, and...

  17. 77 FR 39125 - Defense Acquisition Regulations System; Defense Federal Acquisition Regulation Supplement; Only...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-29

    .... DATES: Effective Date: June 29, 2012. FOR FURTHER INFORMATION CONTACT: Ms. Amy G. Williams, telephone... at 76 FR 44293 on July 25, 2011, to address acquisitions using competitive procedures in which only... research/industry communication. In 2008, the Office of Management and Budget and Office of...

  18. Information/Knowledge Acquisition Methods for Decision Support Systems and Expert Systems.

    ERIC Educational Resources Information Center

    Yang, Heng-Li

    1995-01-01

    Compares information requirement-elicitation (IRE) methods for decision support systems (DSS) with knowledge acquisition (KA) methods for expert systems (ES) development. The definition and architectures of ES and DSS are compared and the systems' development cycles and IRE/KA methods are discussed. Differences are noted between ES and DSS…

  19. A new control and data acquisition system for cosmic ray telescopes based on multigap resistive plate chambers

    NASA Astrophysics Data System (ADS)

    Avanzini, C.; Bossini, E.; Paoletti, R.; Partini, S.; Pilo, F.; Tazzioli, A.

    2013-08-01

    The upcoming phase of expansion of the telescope network of the EEE project has recently inspired a proposal of redesign of the detector control and monitoring, as well as data acquisition interfaces. The new design results in a very compact and versatile system with a significant cost reduction. The system architecture is described, with emphasis on the integration of data acquisition, trigger and GPS into a single unit. Performances of a fully functional prototype are also reported, as well as plans for future developments.

  20. Ecological baseline study of the Yakima Firing Center proposed land acquisition: A status report

    SciTech Connect

    Rogers, L.E.; Beedlow, P.A.; Eberhardt, L.E.; Dauble, D.D.; Fitzner, R.E.

    1989-01-01

    This report provides baseline environmental information for the property identified for possible expansion of the Yakima Firing Center. Results from this work provide general descriptions of the animals and major plant communities present. A vegetation map derived from a combination of on-site surveillance and remotely sensed imagery is provided as part of this report. Twenty-seven wildlife species of special interest (protected, sensitive, furbearer, game animal, etc.), and waterfowl, were observed on the proposed expansion area. Bird censuses revealed 13 raptorial species (including four of special interest: bald eagle, golden eagle, osprey, and prairie falcon); five upland game bird species (sage grouse, California quail, chukar, gray partridge, and ring-necked pheasant); common loons (a species proposed for state listing as threatened); and five other species of special interest (sage thrasher, loggerhead shrike, mourning dove, sage sparrow, and long-billed curlew). Estimates of waterfowl abundance are included for the Priest Rapids Pool of the Columbia River. Six small mammal species were captured during this study; one, the sagebrush vole, is a species of special interest. Two large animal species, mule deer and elk, were noted on the site. Five species of furbearing animals were observed (coyote, beaver, raccoon, mink, and striped skunk). Four species of reptiles and one amphibian were noted. Fisheries surveys were conducted to document the presence of gamefish, and sensitive-classified fish and aquatic invertebrates. Rainbow trout were the only fish collected within the boundaries of the proposed northern expansion area. 22 refs., 10 figs., 4 tabs.

  1. 75 FR 41097 - Homeland Security Acquisition Regulation; Lead System Integrators [HSAR Case 2009-003

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-15

    ... Acquisition Regulation; Lead System Integrators AGENCY: Office of the Chief Procurement Officer, DHS. ACTION... lead system integrators in the acquisition of DHS major systems if they have direct financial interests... 6 U.S.C. 396; hereinafter ``Section 396''), limits firms that can serve as lead system...

  2. LOLA; Library On-Line Acquisitions Sub-System, Washington State University.

    ERIC Educational Resources Information Center

    Burgess, T.; Ames, L.

    The Acquisitions System is just one segment of an overall system design that was made for the entire Technical Services System of the Washington State University Library. After an overall study of the Technical Services System was conducted, a detailed study was made of work in the Acquisitions Department, and the Telecommunications Control…

  3. A Low-Power Bio-Potential Acquisition System with Flexible PDMS Dry Electrodes for Portable Ubiquitous Healthcare Applications

    PubMed Central

    Chen, Chih-Yuan; Chang, Chia-Lin; Chang, Chih-Wei; Lai, Shin-Chi; Chien, Tsung-Fu; Huang, Hong-Yi; Chiou, Jin-Chern; Luo, Ching-Hsing

    2013-01-01

    This work describes a bio-potential acquisition system for portable ubiquitous healthcare applications using flexible polydimethylsiloxane dry electrodes (FPDEs) and a low-power recording circuit. This novel FPDE used Au as the skin contact layer, which was made using a CO2 laser and replica method technology. The FPDE was revised from a commercial bio-potential electrode with a conductive snap using dry electrodes rather than wet electrodes that proposed reliable and robust attachment for the purpose of measurement, and attaching velcro made it wearable on the forearm for bio-potential applications. Furthermore, this study proposes a recording device to store bio-potential signal data and provides portability and low-power consumption for the proposed acquisition system. To acquire differential bio-potentials, such as electrocardiogram (ECG) signals, the proposed recording device includes a low-power front-end acquisition chip fabricated using a complementary metal-oxide-semiconductor (CMOS) process, a commercial microcontroller (MSP430F149), and a secure digital (SD) card for portable healthcare applications. The proposed system can obtain ECG signals efficiently and are comfortable to the skin. The power consumption of the system is about 85 mW for continuous working over a 3 day period with two AA batteries. It can also be used as a compact Holter ECG system. PMID:23459390

  4. Automated control and data acquisition system for lithium-ion accumulators test bench

    NASA Astrophysics Data System (ADS)

    Mizrah, E. A.; Balakirev, R. V.; Shtabel, N. V.

    2015-10-01

    In the article authors describe architecture of an automated data acquisition system for lithium ion accumulators lifetime test bench. The system is based on high performance data acquisition modules and allows acquisition of data in the process of simultaneous testing of 12 accumulators, including current, voltage and temperature of each accumulator. LabView based software is used to control testing, registration of data and loading of test program into system modules.

  5. Feasibility of a driver performance data acquisition system

    SciTech Connect

    Carter, R.J.; Spelt, P.F.; Goodman, M.J.

    1994-06-01

    The National Highway Traffic Safety Administration (NHTSA) envisions many future situations in which the effectiveness and consequences of new intelligent vehicle-highway systems technologies will need to be studied in actual production vehicles. Such studies will enable evaluations in vehicles which are familiar to drivers. These studies would be future enhanced by the availability of an instrumentation package that can be easily installed in these vehicles to enable specific vehicle configurations of interest to be evaluated, thereby increasing the variety of vehicle options that are available for study. Ideally, an approach is needed that would allow data collection from a variety of vehicle models and types, and would address the issue of driver familiarity. Such an approach is embodied in the concept of a driver performance data acquisition system that could be installed in a wide range of vehicles within a relatively short period of time. As a universally adaptable system, it would provide researchers with the ability to manually input data as well as directly record information on driver, vehicle, roadway, and environmental parameters. Furthermore, it would enable the measurement of driver performance in the driver`s own vehicle, thereby ensuring vehicle familiarity. In addition, it would be possible to measure driver performance in relation to any vehicle design characteristic at relatively little expense and effort, and would make it easy to update existing models of driver/vehicle behavior to reflect performance characteristics in vehicles of current manufacture.

  6. The Data Acquisition System for a Kinetic Inductance Detector

    NASA Astrophysics Data System (ADS)

    Branchini, P.; Budano, A.; Capasso, L.; Marchetti, D.

    2015-12-01

    The Data Acquisition System (DAQ) and the Front-End electronics for an array of Kinetic Inductance Detectors (KIDs) are described. KIDs are superconductive detectors, in which electrons are organized in Cooper pairs. Any incident radiation could break a pair generating a couple of quasi-particles that increase the inductance of the detector. The DAQ system we developed is a hardware/software co-design, based on state machines and on a microprocessor embedded into an FPGA. A commercial DAC/ADC board is used to interface the FPGA to the array of KIDs. The DAQ system generates a Stimulus signal suitable for an array of up to 128 KIDs. Such signal is up-mixed with a 3 GHz carrier wave and it then excites the KIDs array. The read-out signal from the detector is down-mixed with respect to the 3 GHz sine wave and recovered Stimulus is read back by the ADC device. The microprocessor stores read out data via a PCI express bus (PCIe) into an external disk. It also computes the Fast Fourier Transform of the acquired read out signal: this allows extrapolating which KID interacted and the energy of the impinging radiation. Simulations and tests have been performed successfully and experimental results are presented.

  7. Versatile data acquisition system and the ISOL facility TRISTAN

    SciTech Connect

    Gill, R.L.; Stelts, M.L.; Chrien, R.E.; Manzella, V.; Liou, H.I.; Shostak, S.

    1980-01-01

    The on-line mass separator, TRISTAN, is located at Brookhaven's High Flux Beam Reactor. A Nielsen-type ion source, which can contain up to 8g. of /sup 235/U in an external beam with a flux of approx. 2 x 10/sup 9/ n/cm/sup 2//sec is used to generate short-lived fission products. A Users Group has been formed to coordinate research between University groups and BNL. Developments planned for TRISTAN include FEBIAD, surface ionization and negative-surface ionization-type ion sources, and a He-jet system as well as construction of new experimental facilities. An off-line separator, ISTU, is available for the development program. A versatile, modular data acquisition system to service experiments on TRISTAN and other nuclear research facilities at the HFBR using Camac interfacing is described. Standard, commercially-available electronic instruments and computer programs, such as FORTRAN and system routines, are used throughout. Simple interfaces have been built to adapt non-Camac equipment to Camac input registers.

  8. Gel tomography for 3D acquisition of plant root systems

    NASA Astrophysics Data System (ADS)

    Montgomery, Kevin N.; Heyenga, Anthony G.

    1998-03-01

    A system for three-dimensional, non-destructive acquisition of the structure of plant root systems is described. The plants are grown in a transparent medium (a 'gel pack') and are then placed on a rotating stage. The stage is rotated in 5-degree increments while images are captured using either traditional photography or a CCD camera. The individual images are then used as input to a tomographic (backprojection) algorithm to recover the original volumetric data. This reconstructed volume is then used as input to a 3D-reconstruction system. The software performs segmentation and mesh generation to derive a tessellated mesh of the root structure. This mesh can then be visualized using computer graphics, or used to derive measurements of root thickness and length. For initial validation studies, a wire model of known length and gauge was used as a calibration sample. The use of the transparent gel- pack media, together with the gel tomography software, allows the plant biologist a method for non-destructive visualization and measurement of root structure that has previously been unattainable.

  9. UCam: universal camera controller and data acquisition system

    NASA Astrophysics Data System (ADS)

    McLay, S. A.; Bezawada, N. N.; Atkinson, D. C.; Ives, D. J.

    2010-07-01

    This paper describes the software architecture and design concepts used in the UKATC's generic camera control and data acquisition software system (UCam) which was originally developed for use with the ARC controller hardware. The ARC detector control electronics are developed by Astronomical Research Cameras (ARC), of San Diego, USA. UCam provides an alternative software solution programmed in C/C++ and python that runs on a real-time Linux operating system to achieve critical speed performance for high time resolution instrumentation. UCam is a server based application that can be accessed remotely and easily integrated as part of a larger instrument control system. It comes with a user friendly client application interface that has several features including a FITS header editor and support for interfacing with network devices. Support is also provided for writing automated scripts in python or as text files. UCam has an application centric design where custom applications for different types of detectors and read out modes can be developed, downloaded and executed on the ARC controller. The built-in de-multiplexer can be easily reconfigured to readout any number of channels for almost any type of detector. It also provides support for numerous sampling modes such as CDS, FOWLER, NDR and threshold limited NDR. UCam has been developed over several years for use on many instruments such as the Wide Field Infra Red Camera (WFCAM) at UKIRT in Hawaii, the mid-IR imager/spectrometer UIST and is also used on instruments at SUBARU, Gemini and Palomar.

  10. The upgraded HADES trigger and data acquisition system

    NASA Astrophysics Data System (ADS)

    Michel, J.; Böhmer, M.; Kajetanowicz, M.; Korcyl, G.; Maier, L.; Palka, M.; Stroth, J.; Tarantola, A.; Traxler, M.; Ugur, C.; Yurevich, S.

    2011-12-01

    The HADES experiment is a High Acceptance Di-Electron Spectrometer located at GSI in Darmstadt, Germany. Recently, its trigger and data acquisition system was upgraded. The main goal was to substantially increase the event rate capability by a factor of up to 20 to reach 100 kHz in light and 20 kHz in heavy ion reaction systems. The total data rate written to storage is about 400 MByte/s in peak. In this context, the complete read-out system was exchanged to FPGA-based platforms using optical communication. For data transport a general-purpose real-time network protocol was developed to meet the strong requirements of the system. In particular, trigger information has to reach all front-end modules with latencies of less than 5 μs through up to 10 intermediate hubs in a star-like network setup. Monitoring and slow control features as well as readout and trigger distribution were joined in a single network protocol made up by three virtual channels with inherent arbitration by priority and a typical switching time of 100 ns. The full DAQ system includes about 550 FPGAs distributed over the complete detector system. For control and monitoring a virtual address space spanning the whole network is provided. Data are merged by the network hubs into data streams and passed on to a server farm using an Ethernet infrastructure. Due to the electromagnetic noise environment, several transmission error detection and correction features were included. In collaboration with groups from experiments of the FAIR accelerator complex, further developments based on the versatile hardware and communication protocol are being pursued.

  11. 75 FR 68331 - Information Collection Requirement; Defense Federal Acquisition Regulation Supplement; DFARS Part...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-05

    ... Defense Acquisition Regulations System Information Collection Requirement; Defense Federal Acquisition... Acquisition Regulations System, Department of Defense (DoD). ACTION: Notice and request for comments regarding a proposed extension of an approved information collection requirement. SUMMARY: In compliance...

  12. Timing for distribution and interrupt control for the TOPAZ Data Acquisition System

    SciTech Connect

    Ikeda, H.; Enomoto, R.; Kawabata, S.; Yamauchi, M.; Imanishi, A.; Ishii, T.; Maruyama, K.; Masuda, H.; Okumo, H.; Ukai, K.

    1987-02-01

    In order to provide a standardized control for the data acquisition system for the TOPAZ detector, a Timing Server/Receiver scheme was developed. The entire system is under control of the Interrupt Control Section, which manages an integral operation of the data acquisition system in the FASTBUS environment.

  13. 12 CFR 225.13 - Factors considered in acting on bank acquisition proposals.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... provided in § 211.24(c)(1)(ii) of the Board's Regulation K (12 CFR 211.24(c)(1)(ii)). (b) Other factors. In..., including the Board's Regulation BB (12 CFR part 228). (c) Interstate transactions. The Board may approve... GOVERNORS OF THE FEDERAL RESERVE SYSTEM BANK HOLDING COMPANIES AND CHANGE IN BANK CONTROL (REGULATION...

  14. Computer software design description for the integrated control and data acquisition system LDUA system

    SciTech Connect

    Aftanas, B.L.

    1998-08-12

    This Computer Software Design Description (CSDD) document provides the overview of the software design for all the software that is part of the integrated control and data acquisition system of the Light Duty Utility Arm System (LDUA). It describes the major software components and how they interface. It also references the documents that contain the detailed design description of the components.

  15. Automatic Speech Acquisition and Recognition for Spacesuit Audio Systems

    NASA Technical Reports Server (NTRS)

    Ye, Sherry

    2015-01-01

    NASA has a widely recognized but unmet need for novel human-machine interface technologies that can facilitate communication during astronaut extravehicular activities (EVAs), when loud noises and strong reverberations inside spacesuits make communication challenging. WeVoice, Inc., has developed a multichannel signal-processing method for speech acquisition in noisy and reverberant environments that enables automatic speech recognition (ASR) technology inside spacesuits. The technology reduces noise by exploiting differences between the statistical nature of signals (i.e., speech) and noise that exists in the spatial and temporal domains. As a result, ASR accuracy can be improved to the level at which crewmembers will find the speech interface useful. System components and features include beam forming/multichannel noise reduction, single-channel noise reduction, speech feature extraction, feature transformation and normalization, feature compression, and ASR decoding. Arithmetic complexity models were developed and will help designers of real-time ASR systems select proper tasks when confronted with constraints in computational resources. In Phase I of the project, WeVoice validated the technology. The company further refined the technology in Phase II and developed a prototype for testing and use by suited astronauts.

  16. Chemical Applications of a Programmable Image Acquisition System

    NASA Astrophysics Data System (ADS)

    Ogren, Paul J.; Henry, Ian; Fletcher, Steven E. S.; Kelly, Ian

    2003-06-01

    Image analysis is widely used in chemistry, both for rapid qualitative evaluations using techniques such as thin layer chromatography (TLC) and for quantitative purposes such as well-plate measurements of analyte concentrations or fragment-size determinations in gel electrophoresis. This paper describes a programmable system for image acquisition and processing that is currently used in the laboratories of our organic and physical chemistry courses. It has also been used in student research projects in analytical chemistry and biochemistry. The potential range of applications is illustrated by brief presentations of four examples: (1) using well-plate optical transmission data to construct a standard concentration absorbance curve; (2) the quantitative analysis of acetaminophen in Tylenol and acetylsalicylic acid in aspirin using TLC with fluorescence detection; (3) the analysis of electrophoresis gels to determine DNA fragment sizes and amounts; and, (4) using color change to follow reaction kinetics. The supplemental material in JCE Online contains information on two additional examples: deconvolution of overlapping bands in protein gel electrophoresis, and the recovery of data from published images or graphs. The JCE Online material also presents additional information on each example, on the system hardware and software, and on the data analysis methodology.

  17. LBL Magnetic-Measurements Data-Acquisition System

    SciTech Connect

    Green, M.I.; Nelson, D.H.

    1983-03-01

    The LBL Magnetic Measurements Engineering (MME) Group has developed a Real-Time Data Acquisition System (DAS) for magnetic measurements. The design objective was for a system that was versatile, portable, modular, expandable, quickly and easily reconfigurable both in hardware and software, and inexpensive. All objectives except the last were attained. An LSI 11/23 microcomputer is interfaced to a clock-calendar, printer, CRT control terminal, plotter with hard copy, floppy and hard disks, GPIB, and CAMAC buses. Off-the-shelf hardware and software have been used where possible. Operational capabilities include: (1) measurement of high permeability materials; (2) harmonic error analysis of (a) superconducting dipoles and (b) rare earth cobalt (REC) and conventional quadrupole magnets; and (3) 0.1% accuracy x-y mapping with Hall probes. Results are typically presented in both tabular and graphical form during measurements. Only minutes are required to switch from one measurement capability to another. Brief descriptions of the DAS capabilities, some of the special instrumentation developed to implement these capabilities, and planned developments are given below.

  18. Design of extensible meteorological data acquisition system based on FPGA

    NASA Astrophysics Data System (ADS)

    Zhang, Wen; Liu, Yin-hua; Zhang, Hui-jun; Li, Xiao-hui

    2015-02-01

    In order to compensate the tropospheric refraction error generated in the process of satellite navigation and positioning. Temperature, humidity and air pressure had to be used in concerned models to calculate the value of this error. While FPGA XC6SLX16 was used as the core processor, the integrated silicon pressure sensor MPX4115A and digital temperature-humidity sensor SHT75 are used as the basic meteorological parameter detection devices. The core processer was used to control the real-time sampling of ADC AD7608 and to acquire the serial output data of SHT75. The data was stored in the BRAM of XC6SLX16 and used to generate standard meteorological parameters in NEMA format. The whole design was based on Altium hardware platform and ISE software platform. The system was described in the VHDL language and schematic diagram to realize the correct detection of temperature, humidity, air pressure. The 8-channel synchronous sampling characteristics of AD7608 and programmable external resources of FPGA laid the foundation for the increasing of analog or digital meteorological element signal. The designed meteorological data acquisition system featured low cost, high performance, multiple expansions.

  19. Use of a new high-speed digital data acquisition system in airborne ice-sounding

    USGS Publications Warehouse

    Wright, David L.; Bradley, Jerry A.; Hodge, Steven M.

    1989-01-01

    A high-speed digital data acquisition and signal averaging system for borehole, surface, and airborne radio-frequency geophysical measurements was designed and built by the US Geological Survey. The system permits signal averaging at rates high enough to achieve significant signal-to-noise enhancement in profiling, even in airborne applications. The first field use of the system took place in Greenland in 1987 for recording data on a 150 by 150-km grid centered on the summit of the Greenland ice sheet. About 6000-line km were flown and recorded using the new system. The data can be used to aid in siting a proposed scientific corehole through the ice sheet.

  20. Design of laser echo data acquisition system based on USB2.0

    NASA Astrophysics Data System (ADS)

    Shang, Fuzhou; Song, Yong; Hao, Qun; Zhang, Kai; Li, Meinan; Zhang, Wenlong

    2012-11-01

    In this paper, a high-speed data acquisition system based on the technology of USB2.0 (Universal Serial Bus) is designed, in which USB master logic is implemented in an FPGA (Field Programmable Gate Array). Firstly, the hardware of data acquisition system is discussed, which includes chip selection, data acquisition and transmission circuit and power conversion circuit. Secondly, the corresponding software including USB firmware program, USB device driver and application program as well as its modifications have been described. The designed hardware and software will help to achieve a data acquisition system with the characterstics of high speed and high accuracy, etc.

  1. A flexible computerized system for environmental data acquisition and transmission

    NASA Astrophysics Data System (ADS)

    Zappalà, G.

    2009-04-01

    In recent years increasing importance has been addressed to the knowledge of the marine environment, either to help detecting and understanding global climate change phenomena, or to protect and preserve those coastal areas, where multiple interests converge (linked to the tourism, recreational or productive activities…) and which suffer greater impact from anthropogenic activities; this has in turn stimulated the start of research programs devoted to the monitoring and surveillance of these particular zones, coupling the needs for knowledge, sustainable development and exploitation of natural resources. There is an increasing need to have data available in real time or near real time in order to intervene in emergency situations. Cabled or wireless data transmission can be used. The first allows the transmission of a higher amount of data only in coastal sites, while the second gives a bigger flexibility in terms of application to different environments; more, using mobile phone services (either terrestrial or satellite), it is possible to allocate the data centre in the most convenient place, without any need of proximity to the sea. Traditional oceanographic techniques, based on ship surveys, hardly fit the needs of operational oceanography, because of their high cost and fragmentary nature, both in spatial and temporal domains. To obtain a good synopticity, it is necessary to complement traditional ship observations with measurements from fixed stations (buoys moored in sites chosen to be representative of wider areas, or to constitute a sentinel against the arrival of pollutants), satellite observations, use of ships of opportunity and of newly developed instruments, like the gliders, or towed sliding devices, like the SAVE. Modern instruments rely on an electronic heart; an integrated hardware-software system developed in Messina is here presented, used in various versions to control data acquisition and transmission on buoys or on ship

  2. Sample Acquisition and Handling System from a Remote Platform

    NASA Technical Reports Server (NTRS)

    Badescu, Mircea; Sherrit, Stewart; Jones, Jack A.

    2011-01-01

    A system has been developed to acquire and handle samples from a suspended remote platform. The system includes a penetrator, a penetrator deployment mechanism, and a sample handler. A gravity-driven harpoon sampler was used for the system, but other solutions can be used to supply the penetration energy, such as pyrotechnic, pressurized gas, or springs. The deployment mechanism includes a line that is attached to the penetrator, a spool for reeling in the line, and a line engagement control mechanism. The penetrator has removable tips that can collect liquid, ice, or solid samples. The handling mechanism consists of a carousel that can store a series of identical or different tips, assist in penetrator reconfiguration for multiple sample acquisition, and deliver the sample to a series of instruments for analysis. The carousel sample handling system was combined with a brassboard reeling mechanism and a penetrator with removable tips. It can attach the removable tip to the penetrator, release and retrieve the penetrator, remove the tip, and present it to multiple instrument stations. The penetrator can be remotely deployed from an aerobot, penetrate and collect the sample, and be retrieved with the sample to the aerobot. The penetrator with removable tips includes sample interrogation windows and a sample retainment spring for unconsolidated samples. The line engagement motor can be used to control the penetrator release and reeling engagement, and to evenly distribute the line on the spool by rocking between left and right ends of the spool. When the arm with the guiding ring is aligned with the spool axis, the line is free to unwind from the spool without rotating the spool. When the arm is perpendicular to the spool axis, the line can move only if the spool rotates.

  3. Low-power wireless ECG acquisition and classification system for body sensor networks.

    PubMed

    Lee, Shuenn-Yuh; Hong, Jia-Hua; Hsieh, Cheng-Han; Liang, Ming-Chun; Chang Chien, Shih-Yu; Lin, Kuang-Hao

    2015-01-01

    A low-power biosignal acquisition and classification system for body sensor networks is proposed. The proposed system consists of three main parts: 1) a high-pass sigma delta modulator-based biosignal processor (BSP) for signal acquisition and digitization, 2) a low-power, super-regenerative on-off keying transceiver for short-range wireless transmission, and 3) a digital signal processor (DSP) for electrocardiogram (ECG) classification. The BSP and transmitter circuits, which are the body-end circuits, can be operated for over 80 days using two 605 mAH zinc-air batteries as the power supply; the power consumption is 586.5 μW. As for the radio frequency receiver and DSP, which are the receiving-end circuits that can be integrated in smartphones or personal computers, power consumption is less than 1 mW. With a wavelet transform-based digital signal processing circuit and a diagnosis control by cardiologists, the accuracy of beat detection and ECG classification are close to 99.44% and 97.25%, respectively. All chips are fabricated in TSMC 0.18-μm standard CMOS process. PMID:25561446

  4. Design and characterization of an image acquisition system and its optomechanical module for chip defects inspection on chip sorters

    NASA Astrophysics Data System (ADS)

    Chen, Ming-Fu; Huang, Po-Hsuan; Chen, Yung-Hsiang; Cheng, Yu-Cheng

    2011-08-01

    Chip sorter is one of packaging facilities in chip manufactory. Defects will occur for a few of chips during manufacturing processes. If the size of chip defects is larger than a criterion of impacting chip quality, these flawed chips have to be detected and removed. Defects inspection system is usually developed with frame CCD imagers. There're some drawbacks for this system, such as mechanism of pause type for image acquisition, complicated acquisition control, easy damage for moving components, etc. And acquired images per chip have to be processed in radiometry and geometry and then pieced together before inspection. These processes impact the accuracy and efficiency of defects inspection. So approaches of image acquisition system and its opto-mechanical module will be critical for inspection system. In this article, design and characterization of a new image acquisition system and its opto-mechanical module are presented. Defects with size of greater than 15μm have to be inspected. Inspection performance shall be greater than 0.6 m/sec. Thus image acquisition system shall have the characteristics of having (1) the resolution of 5μm and 10μm for optical lens and linear CCD imager respectively; (2) the lens magnification of 2; (3) the line rate of greater than 120 kHz for imager output. The design of structure and outlines for new system and module are also described in this work. Proposed system has advantages of such as transporting chips in constant speed to acquire images, using one image only per chip for inspection, no image-mosaic process, simplifying the control of image acquisition. And the inspection efficiency and accuracy will be substantially improved.

  5. Novel Aspects of the DESI Data Acquisition System

    NASA Astrophysics Data System (ADS)

    Beaufore, Lucas; Honscheid, Klaus; Elliott, Ann; Dark Energy Spectroscopic Instrument Collaboration

    2015-04-01

    The Dark Energy Spectroscopic Instrument (DESI) will measure the effect of dark energy on the expansion of the universe. It will obtain optical spectra for tens of millions of galaxies and quasars, constructing a 3-dimensional map spanning the nearby universe to 10 billion light years. The survey will be conducted on the Mayall 4-meter telescope at Kitt Peak National Observatory starting in 2018. In order to achieve these scientific goals the DESI collaboration is building a high throughput spectrograph capable of observing thousands of spectra simultaneously. In this presentation we discuss the DESI instrument control and data acquisition system that is currently being developed to operate the 5,000 fiber positioners in the focal plane, the 10 spectrographs each with three CDD cameras and every other aspect of the instrument. Special emphasis will be given to novel aspects of the design including the use of inexpensive Linux-based microcontrollers such as the Raspberry PI to control a number of DESI hardware components.

  6. LoFASM's FPGA-based Digital Acquisition System

    NASA Astrophysics Data System (ADS)

    Dartez, Louis P.; Jenet, F.; Creighton, T. D.; Ford, A. J.; Hicks, B.; Hinojosa, J.; Kassim, N. E.; Price, R. H.; Stovall, K.; Ray, P. S.; Taylor, G. B.

    2014-01-01

    The Low Frequency All Sky Monitor (LoFASM) is a distributed array of dipole antennas that are sensitive to radio frequencies from 10 to 88 MHz. LoFASM consists of antennas and front end electronics that were originally developed for the Long Wavelength Array (LWA) by the U.S. Naval Research Lab, the University of New Mexico, Virginia Tech, and the Jet Propulsion Laboratory. LoFASM, funded by the U.S. Department of Defense, will initially consist of 4 stations, each consisting of 12 dual-polarization dipole antenna stands. The primary science goals of LoFASM will be the detection and study of low-frequency radio transients, a high priority science goal as deemed by the National Research Council's decadal survey. The data acquisition system for the LoFASM antenna array will be using Field Programmable Gate Array (FPGA) technology to implement a real time full Stokes spectrometer and data recorder. This poster presents an overview of the current design and digital architecture of a single station of the LoFASM array as well as the status of the entire project.

  7. Polar On-Line Acquisition Relay and Transmission System (POLARATS)

    SciTech Connect

    Yuracko, K.

    2004-07-15

    POLARATS (Polar On-Line Acquisition Relay And Transmission System) is being developed by YAHSGS LLC (YAHSGS) and Oak Ridge National Laboratory (ORNL) to provide remote, unattended monitoring of environmental parameters under harsh environmental conditions. In particular, instrumental design and engineering is oriented towards protection of human health in the Arctic, and with the additional goal of advancing Arctic education and research. POLARATS will obtain and transmit environmental data from hardened monitoring devices deployed in locations important to understanding atmospheric and aquatic pollutant migration as it is biomagnified in Arctic food chains. An Internet- and personal computer (PC)-based educational module will provide real time sensor data, on-line educational content, and will be integrated with workbooks and textbooks for use in middle and high school science programs. The educational elements of POLARATS include an Internet-based educational module that will instruct students in the use of the data and how those data fit into changing Arctic environments and food chains. POLARATS will: (1) Enable students, members of the community, and scientific researchers to monitor local environmental conditions in real time over the Internet; and (2) Provide additional educational benefits through integration with middle- and high-school science curricula. Information will be relayed from POLARATS devices to classrooms and libraries along with custom-designed POLARATS teaching materials that will be integrated into existing curricula to enhance the educational benefits realized from the information obtained.

  8. 75 FR 25165 - Defense Federal Acquisition Regulation Supplement; Cost and Software Data Reporting System

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-07

    ... Regulation Supplement; Cost and Software Data Reporting System AGENCY: Defense Acquisition Regulations System... the Defense Federal Acquisition Regulation Supplement (DFARS) to set forth DoD Cost and Software Data... Software Data Reporting (CSDR) process offerors intend to use to satisfy the requirements of the...

  9. The electron spectroscopy for chemical analysis microscopy beamline data acquisition system at ELETTRA

    NASA Astrophysics Data System (ADS)

    Gariazzo, C.; Krempaska, R.; Morrison, G. R.

    1996-07-01

    The electron spectroscopy for chemical analysis (ESCA) microscopy data acquisition system enables the user to control the imaging and spectroscopy modes of operation of the beamline ESCA microscopy at ELETTRA. It allows the user to integrate all experiment, beamline and machine operations in one single environment. The system also provides simple data analysis for both spectra and images data to guide further data acquisition.

  10. Description and operating procedure for magma characterization data acquisition and control system

    SciTech Connect

    Woodward, M H

    1982-04-01

    A computerized data acquisition and control system used in a Sandia National Laboratories' facility for molten rock (magma) and metallurgical pressure bonding experiments is described. The system is based on a Hewlett-Packard 9826A Desktop Computer and a Hewlett-Packard 3497A Data Acquisition/Control Unit. Operating procedures are included, and detailed instructions for implementing the procedures are given.

  11. 48 CFR 1.102 - Statement of guiding principles for the Federal Acquisition System.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Federal Acquisition System is to deliver on a timely basis the best value product or service to the... of responsibility. (b) The Federal Acquisition System will— (1) Satisfy the customer in terms of cost...) Minimize administrative operating costs; (3) Conduct business with integrity, fairness, and openness;...

  12. The Data Acquisition System For Multichannel Spectrometer On Base Of The NGDP Framework

    SciTech Connect

    Isupov, A. Yu.; Kovtun, V. E.; Foshchan, A. G.

    2010-04-30

    In present work it is proposed to implement the data acquisition system (DAQ COMBAS) for the fragment--separator COMBAS under freely distributed UNIX--like operating system (OS) FreeBSD on base of the ngdp framework, which allows to build modular distributed DAQ. As a CAMAC subsystem the camac package (DLNP JINR) is used, which encapsulates code deals with each supported crate controller into corresponding driver. Authors create the driver kh(4) for the PCI adapter of the CC02 controller (Karazin Kharkov National University). The runtime configurable r2h(1) histogram server module is supposed. The histGUI(1) client module is intended for histograms viewing as well as for r2h(1) runtime control and configurating. The histGUI(1) client will not depend on DAQ and ngdp system libraries, so can be compiled under any OS equipped by the ROOT package.

  13. The Data Acquisition System For Multichannel Spectrometer On Base Of The NGDP Framework

    NASA Astrophysics Data System (ADS)

    Isupov, A. Yu.; Kovtun, V. E.; Foshchan, A. G.

    2010-04-01

    In present work it is proposed to implement the data acquisition system (DAQ COMBAS) for the fragment—separator COMBAS under freely distributed UNIX—like operating system (OS) FreeBSD on base of the ngdp framework, which allows to build modular distributed DAQ. As a CAMAC subsystem the camac package (DLNP JINR) is used, which encapsulates code deals with each supported crate controller into corresponding driver. Authors create the driver kh(4) for the PCI adapter of the CC02 controller (Karazin Kharkov National University). The runtime configurable r2h(1) histogram server module is supposed. The histGUI(1) client module is intended for histograms viewing as well as for r2h(1) runtime control and configurating. The histGUI(1) client will not depend on DAQ and ngdp system libraries, so can be compiled under any OS equipped by the ROOT package.

  14. Development and validation of an improved smartphone heart rate acquisition system

    NASA Astrophysics Data System (ADS)

    Karapetyan, G.; Barseghyan, R.; Sarukhanyan, H.; Agaian, S.

    2015-03-01

    In this paper we propose a robust system for touchless heart rate (HR) acquisition on mobile devices. The application allows monitor heart rate signal during usual mobile device usage such as video watching, games playing, article reading etc. The system is based on algorithm of acquiring heart rate via recording of skin color variations with built-in cameras of mobile device. The signal is acquired from different ROIs of human face, which make it more clear and the amplification of the signal improve the robustness in low lightening conditions. The effectiveness and robustness of the developed system has been demonstrated under different distances from camera source and illumination conditions. The experiments have been done with different mobile devices HRs were collected from 10 subjects, ages 22 to 65, by using the 3 devices. Moreover, we compared the developed method with Food and Drug Administration (FDA) approved sensors and related commercial applications of remote heart rate measurements on mobile devices.

  15. Evolution of the ATLAS Trigger and Data Acquisition System

    NASA Astrophysics Data System (ADS)

    Pozo Astigarraga, M. E.; ATLAS Collaboration

    2015-05-01

    ATLAS is a Physics experiment that explores high-energy particle collisions at the Large Hadron Collider at CERN. It uses tens of millions of electronics channels to capture the outcome of the particle bunches crossing each other every 25 ns. Since reading out and storing the complete information is not feasible (˜100 TB/s), ATLAS makes use of a complex and highly distributed Trigger and Data Acquisition (TDAQ) system, in charge of selecting only interesting data and transporting those to permanent mass storage (˜1 GB/s) for later analysis. The data reduction is carried out in two stages: first, custom electronics performs an initial level of data rejection for each bunch crossing based on partial and localized information. Only data corresponding to collisions passing this stage of selection will be actually read-out from the on-detector electronics. Then, a large computer farm (˜17 k cores) analyses these data in real-time and decides which ones are worth being stored for Physics analysis. A large network allows moving the data from ˜2000 front-end buffers to the location where they are processed and from there to mass storage. The overall TDAQ system is embedded in a common software framework that allows controlling, configuring and monitoring the data taking process. The experience gained during the first period of data taking of the ATLAS experiment (Run I, 2010-2012) has inspired a number of ideas for improvement of the TDAQ system that are being put in place during the so-called Long Shutdown 1 of the Large Hadron Collider (LHC), in 2013/14. This paper summarizes the main changes that have been applied to the ATLAS TDAQ system and highlights the expected performance and functional improvements that will be available for the LHC Run II. Particular emphasis will be put on the evolution of the software-based data selection and of the flow of data in the system. The reasons for the modified architectural and technical choices will be explained, and details

  16. Calibration method of the time synchronization error of many data acquisition nodes in the chained system

    NASA Astrophysics Data System (ADS)

    Jiang, Jia-jia; Duan, Fa-jie; Chen, Jin; Zhang, Chao; Wang, Kai; Chang, Zong-jie

    2012-08-01

    Time synchronization is very important in a distributed chained seismic acquisition system with a large number of data acquisition nodes (DANs). The time synchronization error has two causes. On the one hand, there is a large accumulated propagation delay when commands propagate from the analysis and control system to multiple distant DANs, which makes it impossible for different DANs to receive the same command synchronously. Unfortunately, the propagation delay of commands (PDCs) varies in different application environments. On the other hand, the phase jitter of both the master clock and the clock recovery phase-locked loop, which is designed to extract the timing signal, may also cause the time synchronization error. In this paper, in order to achieve accurate time synchronization, a novel calibration method is proposed which can align the PDCs of all of the DANs in real time and overcome the time synchronization error caused by the phase jitter. Firstly, we give a quantitative analysis of the time synchronization error caused by both the PDCs and the phase jitter. Secondly, we propose a back and forth model (BFM) and a transmission delay measurement method (TDMM) to overcome these difficulties. Furthermore, the BFM is designed as the hardware configuration to measure the PDCs and calibrate the time synchronization error. The TDMM is used to measure the PDCs accurately. Thirdly, in order to overcome the time synchronization error caused by the phase jitter, a compression and mapping algorithm (CMA) is presented. Finally, based on the proposed BFM, TDMM and CMA, a united calibration algorithm is developed to overcome the time synchronization error caused by both the PDCs and the phase jitter. The simulation experiment results show the effectiveness of the calibration method proposed in this paper.

  17. 48 CFR 18.111 - Oral requests for proposals.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 1 2013-10-01 2013-10-01 false Oral requests for proposals. 18.111 Section 18.111 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES EMERGENCY ACQUISITIONS Available Acquisition Flexibilities 18.111...

  18. 48 CFR 18.111 - Oral requests for proposals.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 1 2012-10-01 2012-10-01 false Oral requests for proposals. 18.111 Section 18.111 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES EMERGENCY ACQUISITIONS Available Acquisition Flexibilities 18.111...

  19. 48 CFR 18.111 - Oral requests for proposals.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 1 2011-10-01 2011-10-01 false Oral requests for proposals. 18.111 Section 18.111 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES EMERGENCY ACQUISITIONS Available Acquisition Flexibilities 18.111...

  20. 48 CFR 18.103 - Synopses of proposed contract actions.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Synopses of proposed contract actions. 18.103 Section 18.103 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES EMERGENCY ACQUISITIONS Available Acquisition...

  1. 48 CFR 18.103 - Synopses of proposed contract actions.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 1 2014-10-01 2014-10-01 false Synopses of proposed contract actions. 18.103 Section 18.103 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES EMERGENCY ACQUISITIONS Available Acquisition...

  2. 48 CFR 18.103 - Synopses of proposed contract actions.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 1 2012-10-01 2012-10-01 false Synopses of proposed contract actions. 18.103 Section 18.103 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES EMERGENCY ACQUISITIONS Available Acquisition...

  3. 48 CFR 18.103 - Synopses of proposed contract actions.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 1 2013-10-01 2013-10-01 false Synopses of proposed contract actions. 18.103 Section 18.103 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES EMERGENCY ACQUISITIONS Available Acquisition...

  4. 48 CFR 18.111 - Oral requests for proposals.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Oral requests for proposals. 18.111 Section 18.111 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES EMERGENCY ACQUISITIONS Available Acquisition Flexibilities 18.111...

  5. 48 CFR 18.111 - Oral requests for proposals.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 1 2014-10-01 2014-10-01 false Oral requests for proposals. 18.111 Section 18.111 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES EMERGENCY ACQUISITIONS Available Acquisition Flexibilities 18.111...

  6. 48 CFR 18.103 - Synopses of proposed contract actions.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 1 2011-10-01 2011-10-01 false Synopses of proposed contract actions. 18.103 Section 18.103 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES EMERGENCY ACQUISITIONS Available Acquisition...

  7. Automated site characterization for robotic sample acquisition systems

    NASA Technical Reports Server (NTRS)

    Scholl, Marija S.; Eberlein, Susan; Yates, Gigi; Schumate, Michael S.; Majani, Eric; Anderson, Charles H.; Sloan, Jeffrey A.

    1991-01-01

    A mobile, semi-autonomous vehicle with multiple sensors and on-board intelligence is proposed for performing preliminary scientific investigations on extraterrestrial bodies prior to human exploration. Two technologies, a hybrid optical-digital computer system based on optical correlator technology and an image and instrument data analysis system, provide complementary capabilities which might be part of an instrument package for an intelligent robotic vehicle. The hybrid digital-optical vision system could perform real-time image classification tasks using an optical correlator with programmable matched filters under control of a digital microcomputer. The data analysis system would analyze visible and multiband imagery to extract mineral composition and textural information for geologic characterization. Together these technologies would support the site characterization needs of a robotic vehicle for both navigational and scientific purposes.

  8. 76 FR 44293 - Defense Acquisition Regulations System; Defense Federal Acquisition Regulation Supplement; Only...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-25

    ... additional period of at least 30 days, if the solicitation allowed fewer than 30 days for receipt of proposals and only one offer is received. If a period of at least 30 days was allowed for receipt of... period of at least 30 days for receipt of proposals. If the solicitation allowed at least 30 days...

  9. System design description for ``Mini-DACS`` data acquisition and control system

    SciTech Connect

    Ermi, A.M.

    1996-10-01

    This document describes the computer software design and associated hardware for the Mini-DACS (Data Acquisition and Control System) in support of testing the second spare pump (HMR-3) for tank 241SY101. The testing of HMR-3 was conducted at the Maintenance and Storage Facility (MASF).

  10. Signal acquisition module design for multi-channel surface magnetic resonance sounding system.

    PubMed

    Lin, Tingting; Chen, Wuqiang; Du, Wenyuan; Zhao, Jing

    2015-11-01

    To obtain a precise 2D/3D image of fissure or karst water, multi-channel magnetic resonance sounding (MRS) systems using edge-to-edge or overlapping receiving coils are needed. Thus, acquiring a nano-volt signal for a small amount of the aquifer and suppressing the mutual coupling between adjacent coils are two important issues for the design of the signal acquisition module in the system. In the present study, we propose to use a passive low pass filter, consisted of a resistance (R) and capacitance (C), to inhibit the mutual coupling effects of the coils. Four low-noise operational amplifiers LT1028, OPA124, AD745, and OP27 were compared with respect to achieving the lowest system noise. As a result, 3 pieces of LT1028 were chosen and connected in parallel to serve as preamplifier, with a sensitivity of 1.4 nV/√Hz at 2 kHz. Experimental results are presented for 2D MRS groundwater investigations conducted in the suburb of Changchun, China. The inversion result is consistent with the result of drilling log, suggesting that the signal acquisition module is well developed. PMID:26628154

  11. 48 CFR 1515.305 - Proposal evaluation.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 6 2014-10-01 2014-10-01 false Proposal evaluation. 1515.305 Section 1515.305 Federal Acquisition Regulations System ENVIRONMENTAL PROTECTION AGENCY... evaluation....

  12. 48 CFR 1515.305 - Proposal evaluation.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 6 2012-10-01 2012-10-01 false Proposal evaluation. 1515.305 Section 1515.305 Federal Acquisition Regulations System ENVIRONMENTAL PROTECTION AGENCY... evaluation....

  13. 48 CFR 1515.305 - Proposal evaluation.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 6 2013-10-01 2013-10-01 false Proposal evaluation. 1515.305 Section 1515.305 Federal Acquisition Regulations System ENVIRONMENTAL PROTECTION AGENCY... evaluation....

  14. Cryogenic Liquid Sample Acquisition System for Remote Space Applications

    NASA Technical Reports Server (NTRS)

    Mahaffy, Paul; Trainer, Melissa; Wegel, Don; Hawk, Douglas; Melek, Tony; Johnson, Christopher; Amato, Michael; Galloway, John

    2013-01-01

    There is a need to acquire autonomously cryogenic hydrocarbon liquid sample from remote planetary locations such as the lakes of Titan for instruments such as mass spectrometers. There are several problems that had to be solved relative to collecting the right amount of cryogenic liquid sample into a warmer spacecraft, such as not allowing the sample to boil off or fractionate too early; controlling the intermediate and final pressures within carefully designed volumes; designing for various particulates and viscosities; designing to thermal, mass, and power-limited spacecraft interfaces; and reducing risk. Prior art inlets for similar instruments in spaceflight were designed primarily for atmospheric gas sampling and are not useful for this front-end application. These cryogenic liquid sample acquisition system designs for remote space applications allow for remote, autonomous, controlled sample collections of a range of challenging cryogenic sample types. The design can control the size of the sample, prevent fractionation, control pressures at various stages, and allow for various liquid sample levels. It is capable of collecting repeated samples autonomously in difficult lowtemperature conditions often found in planetary missions. It is capable of collecting samples for use by instruments from difficult sample types such as cryogenic hydrocarbon (methane, ethane, and propane) mixtures with solid particulates such as found on Titan. The design with a warm actuated valve is compatible with various spacecraft thermal and structural interfaces. The design uses controlled volumes, heaters, inlet and vent tubes, a cryogenic valve seat, inlet screens, temperature and cryogenic liquid sensors, seals, and vents to accomplish its task.

  15. On Board Data Acquisition System with Intelligent Transducers for Unmanned Aerial Vehicles

    NASA Astrophysics Data System (ADS)

    Rochala, Zdzisław

    2012-02-01

    This report presents conclusions from research project no. ON50900363 conducted at the Mechatronics Department, Military University of Technology in the years 2007-2010. As the main object of the study involved the preparation of a concept and the implementation of an avionics data acquisition system intended for research during flight of unmanned aerial vehicles of the mini class, this article presents a design of an avionics system and describes equipment solutions of a distributed measurement system intended for data acquisition consisting of intelligent transducers. The data collected during a flight controlled by an operator confirmed proper operation of the individual components of the data acquisition system.

  16. Data acquisition system of the NANOSAW-2 stand alone wind diesel plant. Document and user's guide

    NASA Astrophysics Data System (ADS)

    Manninen, L. M.

    1993-12-01

    This document is the report of a wind-diesel measurement and modeling project. A measurement system comprising signal transducers, wiring, data logger, and data acquisition software has been constructed. The system produces comprehensive data of high quality. Remote control of measurement system and monitoring of plant status is also possible. The selected data logging unit has proved to be reliable. The logger and software can also be applied to other data acquisition applications with minor changes. Chapters 2 and 3 describe the physical measurement system excluding the data logger. The data acquisition including the hardware (data logger) and the software are discussed in chapter 4. Chapter 5 contains the user instructions.

  17. Development of a PC-based data acquisition and control system

    Technology Transfer Automated Retrieval System (TEKTRAN)

    An inexpensive data acquisition and control system was developed, which can easily be used with different computers for many agricultural and biological applications. The high-speed data acquisition and control device uses only an RS-232 serial port to interface with a PC. The device has two analo...

  18. Proposal for a National Serials Data System.

    ERIC Educational Resources Information Center

    Adams, Scott

    A hypothetical model is given for a National Serials Data System based on the best educated guesses of what the system should do and how, therefore, it should function. The model focuses attention on the ultimate goal rather than on the decision-making processes relating to choice of data elements, unique identification codes, etc. This conceptual…

  19. A Pilot - An On-Line Library Acquisition System.

    ERIC Educational Resources Information Center

    Spigai, Frances; And Others

    This report presents documentation of files, of file organization, and of 42 of the modular program subroutines used in a pilot project devised by the Oregon State University (OSU) Computer Center to simulate procedures in the Acquisitions Department of the OSU Library. A total of 224 bibliographically verified requests for monographs, 30 vender…

  20. What's right and what's wrong with laboratory information system requests for proposals.

    PubMed

    Weilert, M

    1992-01-01

    Using a formal request for proposal (RFP) has been widely promoted as an essential phase of laboratory information system (LIS) selection and acquisition. Recently, stories of system or project failure--despite adherence to the RFP procedure--have increased. Case reports suggest that the RFP itself may sometimes hinder, rather than facilitate, the system selection process. As with any tool, the RFP has strengths and weaknesses, either of which may predominate depending on how the tool is used. Laboratories should be aware of alternatives to the formal RFP and should view the RFP as part of an integrated process of system evaluation and selection. PMID:10116939

  1. An Update of The Diagnostic Systems Proposed for The New Third Generation UK Light Source, DIAMOND

    NASA Astrophysics Data System (ADS)

    Buckley, Stephen R.; Dufau, Michael J.; Smith, Robert J.

    2002-12-01

    This paper describes the currently proposed systems for electron beam position monitoring (EBPM) and diagnostics for the DIAMOND synchrotron. Although the basic requirements have remained unaltered, the philosophy of implementation has been subject to change, influenced by the experiences of other national light sources, and the emerging availability of commercial equipment, suited to the needs of DIAMOND. This paper focuses in greatest detail on the storage ring systems, including data acquisition and control. Details of Total Current Monitor (TCM) systems, and an active, beam position based interlock system for protecting ID vessels against thermal damage, by beam mis-steer, are also included.

  2. 48 CFR 15.404 - Proposal analysis.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Proposal analysis. 15.404 Section 15.404 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES CONTRACTING BY NEGOTIATION Contract Pricing 15.404 Proposal analysis....

  3. 48 CFR 15.404 - Proposal analysis.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 1 2011-10-01 2011-10-01 false Proposal analysis. 15.404 Section 15.404 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES CONTRACTING BY NEGOTIATION Contract Pricing 15.404 Proposal analysis....

  4. 48 CFR 15.404 - Proposal analysis.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 1 2012-10-01 2012-10-01 false Proposal analysis. 15.404 Section 15.404 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES CONTRACTING BY NEGOTIATION Contract Pricing 15.404 Proposal analysis....

  5. 48 CFR 15.404 - Proposal analysis.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 1 2013-10-01 2013-10-01 false Proposal analysis. 15.404 Section 15.404 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES CONTRACTING BY NEGOTIATION Contract Pricing 15.404 Proposal analysis....

  6. 48 CFR 15.404 - Proposal analysis.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 1 2014-10-01 2014-10-01 false Proposal analysis. 15.404 Section 15.404 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES CONTRACTING BY NEGOTIATION Contract Pricing 15.404 Proposal analysis....

  7. 48 CFR 5215.608 - Proposal evaluation.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 7 2014-10-01 2014-10-01 false Proposal evaluation. 5215.608 Section 5215.608 Federal Acquisition Regulations System DEPARTMENT OF THE NAVY ACQUISITION REGULATIONS CONTRACTING BY NEGOTIATION Source Selection 5215.608 Proposal evaluation. (a) When a cost...

  8. 48 CFR 5215.608 - Proposal evaluation.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 7 2010-10-01 2010-10-01 false Proposal evaluation. 5215.608 Section 5215.608 Federal Acquisition Regulations System DEPARTMENT OF THE NAVY ACQUISITION REGULATIONS CONTRACTING BY NEGOTIATION Source Selection 5215.608 Proposal evaluation. (a) When a cost...

  9. 48 CFR 5215.608 - Proposal evaluation.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 7 2011-10-01 2011-10-01 false Proposal evaluation. 5215.608 Section 5215.608 Federal Acquisition Regulations System DEPARTMENT OF THE NAVY ACQUISITION REGULATIONS CONTRACTING BY NEGOTIATION Source Selection 5215.608 Proposal evaluation. (a) When a cost...

  10. 48 CFR 5215.608 - Proposal evaluation.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 7 2013-10-01 2012-10-01 true Proposal evaluation. 5215.608 Section 5215.608 Federal Acquisition Regulations System DEPARTMENT OF THE NAVY ACQUISITION REGULATIONS CONTRACTING BY NEGOTIATION Source Selection 5215.608 Proposal evaluation. (a) When a cost...

  11. 48 CFR 5215.608 - Proposal evaluation.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 7 2012-10-01 2012-10-01 false Proposal evaluation. 5215.608 Section 5215.608 Federal Acquisition Regulations System DEPARTMENT OF THE NAVY ACQUISITION REGULATIONS CONTRACTING BY NEGOTIATION Source Selection 5215.608 Proposal evaluation. (a) When a cost...

  12. A Four Channel Beam Current Monitor Data Acquisition System Using Embedded Processors

    SciTech Connect

    Wheat, Jr., Robert Mitchell; Dalmas, Dale A.; Dale, Gregory E.

    2015-08-11

    Data acquisition from multiple beam current monitors is required for electron accelerator production of Mo-99. A two channel system capable of recording data from two beam current monitors has been developed, is currently in use, and is discussed below. The development of a cost-effective method of extending this system to more than two channels and integrating of these measurements into an accelerator control system is the main focus of this report. Data from these current monitors is digitized, processed, and stored by a digital data acquisition system. Limitations and drawbacks with the currently deployed digital data acquisition system have been identified as have been potential solutions, or at least improvements, to these problems. This report will discuss and document the efforts we've made in improving the flexibility and lowering the cost of the data acquisition system while maintaining the minimum requirements.

  13. Dynamic Acquisition and Retrieval Tool (DART) for Comet Sample Return : Session: 2.06.Robotic Mobility and Sample Acquisition Systems

    NASA Technical Reports Server (NTRS)

    Badescu, Mircea; Bonitz, Robert; Kulczycki, Erick; Aisen, Norman; Dandino, Charles M.; Cantrell, Brett S.; Gallagher, William; Shevin, Jesse; Ganino, Anthony; Haddad, Nicolas; Walkemeyer, Phillip; Backes, Paul; Shiraishi, Lori

    2013-01-01

    The 2011 Decadal Survey for planetary science released by the National Research Council of the National Academies identified Comet Surface Sample Return (CSSR) as one of five high priority potential New Frontiers-class missions in the next decade. The main objectives of the research described in this publication are: develop a concept for an end-to-end system for collecting and storing a comet sample to be returned to Earth; design, fabricate and test a prototype Dynamic Acquisition and Retrieval Tool (DART) capable of collecting 500 cc sample in a canister and eject the canister with a predetermined speed; identify a set of simulants with physical properties at room temperature that suitably match the physical properties of the comet surface as it would be sampled. We propose the use of a dart that would be launched from the spacecraft to impact and penetrate the comet surface. After collecting the sample, the sample canister would be ejected at a speed greater than the comet's escape velocity and captured by the spacecraft, packaged into a return capsule and returned to Earth. The dart would be composed of an inner tube or sample canister, an outer tube, a decelerator, a means of capturing and retaining the sample, and a mechanism to eject the canister with the sample for later rendezvous with the spacecraft. One of the significant unknowns is the physical properties of the comet surface. Based on new findings from the recent Deep Impact comet encounter mission, we have limited our search of solutions for sampling materials to materials with 10 to 100 kPa shear strength in loose or consolidated form. As the possible range of values for the comet surface temperature is also significantly different than room temperature and testing at conditions other than the room temperature can become resource intensive, we sought sample simulants with physical properties at room temperature similar to the expected physical properties of the comet surface material. The chosen

  14. Fully digital data acquisition system for the neutron time-of-flight spectrometer TOFOR at JET

    SciTech Connect

    Skiba, M.; Weiszflog, M.; Hjalmarsson, A.; Ericsson, G.; Hellesen, C.; Conroy, S.; Andersson-Sunden, E.; Eriksson, J.; Binda, F.; Collaboration: JET-EFDA Contributors

    2012-10-15

    A prototype of a fully digital data acquisition system based on 1 Gsps 12 bit digitizers for the TOFOR fusion neutron spectrometer at JET is assessed. The prototype system enables the use of geometry-based background discrimination techniques, which are modeled, evaluated, and compared to experimental data. The experimental results are in line with the models and show a significant improvement in signal-to-background ratio in measured time-of-flight spectrum compared to the existing data acquisition system.

  15. The electronics and data acquisition system for the PandaX-I dark matter experiment

    NASA Astrophysics Data System (ADS)

    Ren, X.; Chen, X.; Ji, X.; Li, S.; Lei, S.; Liu, J.; Wang, M.; Xiao, M.; Xie, P.; Yan, B.

    2016-04-01

    We describe the electronics and data acquisition system used in the first phase of the PandaX experiment—a 120 kg dual-phase liquid xenon dark matter direct detection experiment in the China Jin-Ping Underground Laboratory. This system utilized 180 channels of commercial flash ADC waveform digitizers. During the entire experimental run, the system has achieved low trigger threshold (<1 keV electron-equivalent energy) and low deadtime data acquisition.

  16. Advanced Signal Conditioners for Data-Acquisition Systems

    NASA Technical Reports Server (NTRS)

    Lucena, Angel; Perotti, Jose; Eckhoff, Anthony; Medelius, Pedro

    2004-01-01

    Signal conditioners embodying advanced concepts in analog and digital electronic circuitry and software have been developed for use in data-acquisition systems that are required to be compact and lightweight, to utilize electric energy efficiently, and to operate with high reliability, high accuracy, and high power efficiency, without intervention by human technicians. These signal conditioners were originally intended for use aboard spacecraft. There are also numerous potential terrestrial uses - especially in the fields of aeronautics and medicine, wherein it is necessary to monitor critical functions. Going beyond the usual analog and digital signal-processing functions of prior signal conditioners, the new signal conditioner performs the following additional functions: It continuously diagnoses its own electronic circuitry, so that it can detect failures and repair itself (as described below) within seconds. It continuously calibrates itself on the basis of a highly accurate and stable voltage reference, so that it can continue to generate accurate measurement data, even under extreme environmental conditions. It repairs itself in the sense that it contains a micro-controller that reroutes signals among redundant components as needed to maintain the ability to perform accurate and stable measurements. It detects deterioration of components, predicts future failures, and/or detects imminent failures by means of a real-time analysis in which, among other things, data on its present state are continuously compared with locally stored historical data. It minimizes unnecessary consumption of electric energy. The design architecture divides the signal conditioner into three main sections: an analog signal section, a digital module, and a power-management section. The design of the analog signal section does not follow the traditional approach of ensuring reliability through total redundancy of hardware: Instead, following an approach called spare parts tool box, the

  17. Development of a knowledge acquisition tool for an expert system flight status monitor

    NASA Technical Reports Server (NTRS)

    Disbrow, J. D.; Duke, E. L.; Regenie, V. A.

    1986-01-01

    Two of the main issues in artificial intelligence today are knowledge acquisition dion and knowledge representation. The Dryden Flight Research Facility of NASA's Ames Research Center is presently involved in the design and implementation of an expert system flight status monitor that will provide expertise and knowledge to aid the flight systems engineer in monitoring today's advanced high-performance aircraft. The flight status monitor can be divided into two sections: the expert system itself and the knowledge acquisition tool. The knowledge acquisition tool, the means it uses to extract knowledge from the domain expert, and how that knowledge is represented for computer use is discussed. An actual aircraft system has been codified by this tool with great success. Future real-time use of the expert system has been facilitated by using the knowledge acquisition tool to easily generate a logically consistent and complete knowledge base.

  18. Acquisition of reliable vacuum hardware for large accelerator systems

    SciTech Connect

    Welch, K.M.

    1995-09-06

    Credible and effective communications prove to be the major challenge in the acquisition of reliable vacuum hardware. Technical competence is necessary but not sufficient. The authors must effectively communicate with management, sponsoring agencies, project organizations, service groups, staff and with vendors. Most of Deming`s 14 quality assurance tenants relate to creating an enlightened environment of good communications. All projects progress along six distinct, closely coupled, dynamic phases. All six phases are in a state of perpetual change. These phases and their elements are discussed, with emphasis given to the acquisition phase and its related vocabulary. Large projects require great clarity and rigor as poor communications can be costly. For rigor to be cost effective, it can`t be pedantic. Clarity thrives best in a low-risk, team environment.

  19. Electronics engineering tools for modern data acquisition systems

    SciTech Connect

    Cardoso, Guilherme; Kwan, Simon; Vergara, Sergio; Sheaff, Marleigh; /Wisconsin U., Madison

    2003-01-01

    The very large number of channels and high data rates in modern particle physics experiments put very stringent requirements on the acquisition of data. To reduce the cost as well as the number of cables required to transport the data from detector to counting room, it is necessary to use very large scale integrated circuits for pre-processing the data right on the front-end circuit boards. Also, very high speed optoelectronic circuits are needed to transport the data on to the counting room from the front-end circuits. Two techniques relevant to data acquisition are discussed. The first is Field Programmable Gate Arrays (FPGAs), including using the Very High Speed Integrated Circuit Hardware Description Language (VHDL) to program them. The second is the design of a very high speed optoelectronic circuit for data transport.

  20. Extended depth of field system for long distance iris acquisition

    NASA Astrophysics Data System (ADS)

    Chen, Yuan-Lin; Hsieh, Sheng-Hsun; Hung, Kuo-En; Yang, Shi-Wen; Li, Yung-Hui; Tien, Chung-Hao

    2012-10-01

    Using biometric signatures for identity recognition has been practiced for centuries. Recently, iris recognition system attracts much attention due to its high accuracy and high stability. The texture feature of iris provides a signature that is unique for each subject. Currently most commercial iris recognition systems acquire images in less than 50 cm, which is a serious constraint that needs to be broken if we want to use it for airport access or entrance that requires high turn-over rate . In order to capture the iris patterns from a distance, in this study, we developed a telephoto imaging system with image processing techniques. By using the cubic phase mask positioned front of the camera, the point spread function was kept constant over a wide range of defocus. With adequate decoding filter, the blurred image was restored, where the working distance between the subject and the camera can be achieved over 3m associated with 500mm focal length and aperture F/6.3. The simulation and experimental results validated the proposed scheme, where the depth of focus of iris camera was triply extended over the traditional optics, while keeping sufficient recognition accuracy.

  1. A digital receiver module with direct data acquisition for magnetic resonance imaging systems

    NASA Astrophysics Data System (ADS)

    Tang, Weinan; Sun, Hongyu; Wang, Weimin

    2012-10-01

    A digital receiver module for magnetic resonance imaging (MRI) with detailed hardware implementations is presented. The module is based on a direct sampling scheme using the latest mixed-signal circuit design techniques. A single field-programmable gate array chip is employed to perform software-based digital down conversion for radio frequency signals. The modular architecture of the receiver allows multiple acquisition channels to be implemented on a highly integrated printed circuit board. To maintain the phase coherence of the receiver and the exciter in the context of direct sampling, an effective phase synchronization method was proposed to achieve a phase deviation as small as 0.09°. The performance of the described receiver module was verified in the experiments for both low- and high-field (0.5 T and 1.5 T) MRI scanners and was compared to a modern commercial MRI receiver system.

  2. A digital receiver module with direct data acquisition for magnetic resonance imaging systems.

    PubMed

    Tang, Weinan; Sun, Hongyu; Wang, Weimin

    2012-10-01

    A digital receiver module for magnetic resonance imaging (MRI) with detailed hardware implementations is presented. The module is based on a direct sampling scheme using the latest mixed-signal circuit design techniques. A single field-programmable gate array chip is employed to perform software-based digital down conversion for radio frequency signals. The modular architecture of the receiver allows multiple acquisition channels to be implemented on a highly integrated printed circuit board. To maintain the phase coherence of the receiver and the exciter in the context of direct sampling, an effective phase synchronization method was proposed to achieve a phase deviation as small as 0.09°. The performance of the described receiver module was verified in the experiments for both low- and high-field (0.5 T and 1.5 T) MRI scanners and was compared to a modern commercial MRI receiver system.

  3. Novel host-specific iron acquisition system in the zoonotic pathogen Vibrio vulnificus.

    PubMed

    Pajuelo, David; Lee, Chung-Te; Roig, Francisco J; Hor, Lien-I; Amaro, Carmen

    2015-06-01

    Vibrio vulnificus is a marine bacterium associated with human and fish (mainly farmed eels) diseases globally known as vibriosis. The ability to infect and overcome eel innate immunity relies on a virulence plasmid (pVvbt2) specific for biotype 2 (Bt2) strains. In the present study, we demonstrated that pVvbt2 encodes a host-specific iron acquisition system that depends on an outer membrane receptor for eel transferrin called Vep20. The inactivation of vep20 did not affect either bacterial growth in human plasma or virulence for mice, while bacterial growth in eel blood/plasma was abolished and virulence for eels was significantly impaired. Furthermore, vep20 is an iron-regulated gene overexpressed in eel blood during artificially induced vibriosis both in vitro and in vivo. Interestingly, homologues to vep20 were identified in the transferable plasmids of two fish pathogen species of broad-host range, Vibrio harveyi (pVh1) and Photobacterium damselae subsp. damselae (pPHDD1). These data suggest that Vep20 belongs to a new family of plasmid-encoded fish-specific transferrin receptors, and the acquisition of these plasmids through horizontal gene transfer is likely positively selected in the fish-farming environment. Moreover, we propose Ftbp (fish transferrin binding proteins) as a formal name for this family of proteins. PMID:25630302

  4. [Study of fast acquisition technique for heavy ion CT system based on the measurement of residual range distribution].

    PubMed

    Mogaki, Tatsuya; Abe, Shinji; Sato, Hitoshi; Muraishi, Hiroshi; Hara, Hidetake; Hara, Satoshi; Miyake, Shoko; Himukai, Takeshi; Kanai, Tatsuaki

    2012-01-01

    We proposed a new technique for the fast acquisition heavy ion CT (HICT) system based on the measurement of residual range distribution using an intensifying screen and charge coupled device camera. The previously used fast acquisition HICT system had poor electron density resolution. In the new technique, the range shifter thickness is varied over the required dynamic range in the spill of the heavy ion beam at each projection angle and the residual range distribution is determined by a series of acquisition data. We examined the image quality using the contrast noise ratio and the noise power spectrum, and estimated the electron density resolution, using a low-contrast phantom for measurement of electron density resolution. The image quality of the new technique was superior to that of the previous fast acquisition HICT system. Furthermore, the relative electron density resolution was 0.011, which represented an improvement of about 12-fold. Therefore we showed that the new technique was potentially useful in clinical use of HICT, including treatment and quality assurance of heavy ion therapy. PMID:24592673

  5. A GNM mission and system design proposal

    NASA Technical Reports Server (NTRS)

    Bailey, Stephen

    1990-01-01

    Here, the author takes an advocacy position for the proposed Mars Global Network Mission (GNM); it is not intended to be an objective review, although both pros and cons are presented in summary. The mission consists of launches from earth in the '96, '98, and '01 opportunities on Delta-class launch vehicles (approx. 1000 kg injected to Mars in 8 to 10 ft diameter shroud). The trans Mars boost stage injects a stack of small independent, aeroshelled spacecraft. The stack separates from the boost stage and each rigid (as opposed to deployable) aeroshell flies to Mars on its own, performing midcourse maneuvers as necessary. Each spacecraft flies a unique trajectory which is targeted to achieve approach atmospheric interface at the desired latitude and lighting conditions; arrival times may vary by a month or more. A direct entry is performed, there is no propulsive orbit capture. The aeroshelled rough-landers are targeted to achieve a desired attitude and entry flight path angle, and then follow a passive ballistic trajectory until terminal descent. Based on sensed acceleration (integrated to deduce altitude), the aft aeroshell skirt is jettisoned; a short later a supersonic parachute is deployed. The ballistic coefficient of the parachute is sized to achieve terminal velocity at about 8 km. However the parachute is not deployed until a few Km above the surface to minimize wind-induced drift. The nose cap descent imaging begins, a laser altimeter also measures true altitude. Based on range and range rate to the surface, the parachute is jettisoned and the lander uses descent engines to achieve touchdown velocity. A contact sensor shuts down the motors to avoid cratering, and the lander rough-lands at less than 5 m/sec. The remaining aeroshell and a deployable bladder attenuate landing loads and minimize the possibility of tip over. Science instruments are deployed and activated, and the network is established.

  6. Proposed clinical internal carotid artery classification system

    PubMed Central

    Abdulrauf, Saleem I; Ashour, Ahmed M; Marvin, Eric; Coppens, Jeroen; Kang, Brian; Hsieh, Tze Yu Yeh; Nery, Breno; Penanes, Juan R; Alsahlawi, Aysha K; Moore, Shawn; Al-Shaar, Hussam Abou; Kemp, Joanna; Chawla, Kanika; Sujijantarat, Nanthiya; Najeeb, Alaa; Parkar, Nadeem; Shetty, Vilaas; Vafaie, Tina; Antisdel, Jastin; Mikulec, Tony A; Edgell, Randall; Lebovitz, Jonathan; Pierson, Matt; Pires de Aguiar, Paulo Henrique; Buchanan, Paula; Di Cosola, Angela; Stevens, George

    2016-01-01

    Introduction: Numerical classification systems for the internal carotid artery (ICA) are available, but modifications have added confusion to the numerical systems. Furthermore, previous classifications may not be applicable uniformly to microsurgical and endoscopic procedures. The purpose of this study was to develop a clinically useful classification system. Materials and Methods: We performed cadaver dissections of the ICA in 5 heads (10 sides) and evaluated 648 internal carotid arteries with computed tomography angiography. We identified specific anatomic landmarks to define the beginning and end of each ICA segment. Results: The ICA was classified into eight segments based on the cadaver and imaging findings: (1) Cervical segment; (2) cochlear segment (ascending segment of the ICA in the temporal bone) (relation of the start of this segment to the base of the styloid process: Above, 425 sides [80%]; below, 2 sides [0.4%]; at same level, 107 sides [20%]; P < 0.0001) (relation of cochlea to ICA: Posterior, 501 sides [85%]; posteromedial, 84 sides [14%]; P < 0.0001); (3) petrous segment (horizontal segment of ICA in the temporal bone) starting at the crossing of the eustachian tube superolateral to the ICA turn in all 10 samples; (4) Gasserian-Clival segment (ascending segment of ICA in the cavernous sinus) starting at the petrolingual ligament (PLL) (relation to vidian canal on imaging: At same level, 360 sides [63%]; below, 154 sides [27%]; above, 53 sides [9%]; P < 0.0001); in this segment, the ICA projected medially toward the clivus in 275 sides (52%) or parallel to the clivus with no deviation in 256 sides (48%; P < 0.0001); (5) sellar segment (medial loop of ICA in the cavernous sinus) starting at the takeoff of the meningeal hypophyseal trunk (ICA was medial into the sella in 271 cases [46%], lateral without touching the sella in 127 cases [23%], and abutting the sella in 182 cases [31%]; P < 0.0001); (6) sphenoid segment (lateral loop of ICA within the

  7. Proposed clinical internal carotid artery classification system

    PubMed Central

    Abdulrauf, Saleem I; Ashour, Ahmed M; Marvin, Eric; Coppens, Jeroen; Kang, Brian; Hsieh, Tze Yu Yeh; Nery, Breno; Penanes, Juan R; Alsahlawi, Aysha K; Moore, Shawn; Al-Shaar, Hussam Abou; Kemp, Joanna; Chawla, Kanika; Sujijantarat, Nanthiya; Najeeb, Alaa; Parkar, Nadeem; Shetty, Vilaas; Vafaie, Tina; Antisdel, Jastin; Mikulec, Tony A; Edgell, Randall; Lebovitz, Jonathan; Pierson, Matt; Pires de Aguiar, Paulo Henrique; Buchanan, Paula; Di Cosola, Angela; Stevens, George

    2016-01-01

    Introduction: Numerical classification systems for the internal carotid artery (ICA) are available, but modifications have added confusion to the numerical systems. Furthermore, previous classifications may not be applicable uniformly to microsurgical and endoscopic procedures. The purpose of this study was to develop a clinically useful classification system. Materials and Methods: We performed cadaver dissections of the ICA in 5 heads (10 sides) and evaluated 648 internal carotid arteries with computed tomography angiography. We identified specific anatomic landmarks to define the beginning and end of each ICA segment. Results: The ICA was classified into eight segments based on the cadaver and imaging findings: (1) Cervical segment; (2) cochlear segment (ascending segment of the ICA in the temporal bone) (relation of the start of this segment to the base of the styloid process: Above, 425 sides [80%]; below, 2 sides [0.4%]; at same level, 107 sides [20%]; P < 0.0001) (relation of cochlea to ICA: Posterior, 501 sides [85%]; posteromedial, 84 sides [14%]; P < 0.0001); (3) petrous segment (horizontal segment of ICA in the temporal bone) starting at the crossing of the eustachian tube superolateral to the ICA turn in all 10 samples; (4) Gasserian-Clival segment (ascending segment of ICA in the cavernous sinus) starting at the petrolingual ligament (PLL) (relation to vidian canal on imaging: At same level, 360 sides [63%]; below, 154 sides [27%]; above, 53 sides [9%]; P < 0.0001); in this segment, the ICA projected medially toward the clivus in 275 sides (52%) or parallel to the clivus with no deviation in 256 sides (48%; P < 0.0001); (5) sellar segment (medial loop of ICA in the cavernous sinus) starting at the takeoff of the meningeal hypophyseal trunk (ICA was medial into the sella in 271 cases [46%], lateral without touching the sella in 127 cases [23%], and abutting the sella in 182 cases [31%]; P < 0.0001); (6) sphenoid segment (lateral loop of ICA within the

  8. The upgrade for the data acquisition system of the KOTO detector

    NASA Astrophysics Data System (ADS)

    Tecchio, M.; Beechert, J.; Campbell, M.; Huff, M.; Micallef, J.; Rymph, C.; Schamis, H.; Su, S.; Xu, J.

    2016-07-01

    A major upgrade to the KOTO detector data acquisition system based on the ATCA standard is being considered. The ATCA standard provides a natural solution to the current KOTO constraints, including communication between boards and higher input and output bandwidth.

  9. The DOE/NASA wind turbine data acquisition system. Part 3: Unattended power performance monitor

    NASA Technical Reports Server (NTRS)

    Halleyy, A.; Heidkamp, D.; Neustadter, H.; Olson, R.

    1983-01-01

    Software documentation, operational procedures, and diagnostic instructions for development version of an unattended wind turbine performance monitoring system is provided. Designed to be used for off line intelligent data acquisition in conjunction with the central host computer.

  10. System safety management lessons learned from the US Army acquisition process

    SciTech Connect

    Piatt, J.A.

    1989-05-01

    The Assistant Secretary of the Army for Research, Development and Acquisition directed the Army Safety Center to provide an audit of the causes of accidents and safety of use restrictions on recently fielded systems by tracking residual hazards back through the acquisition process. The objective was to develop lessons learned'' that could be applied to the acquisition process to minimize mishaps in fielded systems. System safety management lessons learned are defined as Army practices or policies, derived from past successes and failures, that are expected to be effective in eliminating or reducing specific systemic causes of residual hazards. They are broadly applicable and supportive of the Army structure and acquisition objectives. Pacific Northwest Laboratory (PNL) was given the task of conducting an independent, objective appraisal of the Army's system safety program in the context of the Army materiel acquisition process by focusing on four fielded systems which are products of that process. These systems included the Apache helicopter, the Bradley Fighting Vehicle (BFV), the Tube Launched, Optically Tracked, Wire Guided (TOW) Missile and the High Mobility Multipurpose Wheeled Vehicle (HMMWV). The objective of this study was to develop system safety management lessons learned associated with the acquisition process. The first step was to identify residual hazards associated with the selected systems. Since it was impossible to track all residual hazards through the acquisition process, certain well-known, high visibility hazards were selected for detailed tracking. These residual hazards illustrate a variety of systemic problems. Systemic or process causes were identified for each residual hazard and analyzed to determine why they exist. System safety management lessons learned were developed to address related systemic causal factors. 29 refs., 5 figs.

  11. Accurate GPS Time-Linked data Acquisition System (ATLAS II) user's manual.

    SciTech Connect

    Jones, Perry L.; Zayas, Jose R.; Ortiz-Moyet, Juan

    2004-02-01

    The Accurate Time-Linked data Acquisition System (ATLAS II) is a small, lightweight, time-synchronized, robust data acquisition system that is capable of acquiring simultaneous long-term time-series data from both a wind turbine rotor and ground-based instrumentation. This document is a user's manual for the ATLAS II hardware and software. It describes the hardware and software components of ATLAS II, and explains how to install and execute the software.

  12. SHIVA - A multitask data acquisition system for the Oslo University cyclotron laboratory

    SciTech Connect

    Skaali, B.; Haugen, A.; Ingebretsen, F.; Midttun, G.

    1983-10-01

    The authors describe a general nuclear data acquisition system implemented on a minicomputer using the standard facilities of a real time operating system. The CAMAC data acquisition hardware is controlled by a high speed ADC scanner module. Sorting of multiparameter data is based on a flexible Transformation Of Nuclear Event (TONE) language. The data processing rate, including tape transfer, is several thousand events/s, depending on the complexity of the sorting program.

  13. Automated support for pharmacovigilance: a proposed system.

    PubMed

    Bright, Roselie A; Nelson, Robert C

    2002-03-01

    Governments, manufacturers, and other entities are interested in adverse event surveillance of marketed medical products. FDA's Center for Drug Evaluation and Research redesigned the post-marketing adverse reaction surveillance process to use the advantages of new technology. As part of this effort, a 'Pharmacovigilance Working Group' designed a new strategy for the review and analyses of adverse event reports received by FDA. It created requirements which divided signal detection into five tiers: (1) Single 'urgent' reports would be sent to reviewers' workstations nightly for immediate attention. Reviewers would be able to customize definitions of 'urgent' (events that should not wait for aggregate review). (2) Single urgent reports would be placed in a context matrix containing historical counts of similar events to aid in initial interpretation. (3) In this first level of aggregate review, graphical displays would highlight patterns within all the reports, both urgent and non-urgent, and (4) periodic drug-specific tabled-based reports would display the newly received reports across a pre-defined variety of displays. These four tiers would produce passive and criteria-based results which would be presented to safety reviewers' electronic workstations. (5) Active query capabilities (routine, such as age, sex, and year distributions, as well as ad hoc) would be available for exploring alerted issues. The historical database would be migrated into the new format. All historical and new reaction data would be coded with the new MedDRA (Medical Dictionary for Regulatory Activities) scheme. The strategy was to design a full data capture system which effectively exploits current computing advances and technical performance to automate many aspects of initial adverse event review, supporting more efficient and effective clinical assessment of safety signals.

  14. Data Acquisition Backend

    SciTech Connect

    Britton Jr., Charles L.; Ezell, N. Dianne Bull; Roberts, Michael

    2013-10-01

    This document is intended to summarize the development and testing of the data acquisition module portion of the Johnson Noise Thermometry (JNT) system developed at ORNL. The proposed system has been presented in an earlier report [1]. A more extensive project background including the project rationale is available in the initial project report [2].

  15. Acquisition/expulsion system for earth orbital propulsion system study. Volume 3: Cryogenic test

    NASA Technical Reports Server (NTRS)

    1973-01-01

    A ground test program was conducted to verify several of the design methods and techniques that were used in designing cryogenic acquisition/expulsion systems. The testing of a 63.5-cm diameter DSL subscale model was particularly significant. Under these tests, the operational characteristics of the DSL concept were verified using LH2 and LN2. Demonstration of the gas free liquid expulsion characteristics was accomplished by expelling LH2 under -1 g using both GH2 and GHe pressurization. Loading of the acquisition/expulsion device was successfully accomplished using LH2 and LN2. The liquid free vapor venting performance of the model was limited because of the thermal stratification under the -1 g test conditions.

  16. Development of an optical beam system for deep sea data acquisition

    SciTech Connect

    Shibata, Yozo

    1994-12-31

    Remotely Operated Vehicles (ROV) are an ideal method for acquiring data from instruments located on the seabed. Electrical, acoustic or optical signals can be used to communicate with the data acquisition system. While optical signals have high capacity, the power of the optical beam decreases rapidly with distance in sea water; however, the ROV`s ability to approach the instruments eliminates this problem. To investigate a feasibility of an optical beam system for underwater data acquisition, the author has developed and manufactured a prototype data acquisition instrument which the ROV can control. Based on the communication test results, he concludes that such a system is a practical means of short-range underwater data acquisition.

  17. Autonomous system for initializing synthetic aperture radar seeker acquisition

    SciTech Connect

    Hamilton, P.C.

    1993-08-03

    A method is described of guiding a missile having an active seeker including a synthetic aperture radar operating in a squint mode to a target aircraft having a search radar therein the maximum range of active seeker acquisition being within said missile's maneuver capability to intercept, and the maximum range of active seeker acquisition not exceeding the capability of the active seeker, said method comprising the steps of: launching said missile in response to detection of the search radar; implementing a passive seeker mode of operation to passively guide said missile towards said target aircraft in a manner to avoid detection of said missile by said target aircraft; transferring from said passive seeker mode to an active seeker mode in response to detected shutdown of said search radar; maneuvering said missile to execute a turn angle away from said target aircraft such that the search field of said synthetic aperture radar sweeps through an entire target uncertainty volume, said turn angle being within a first preselected limit and a second preselected limit such that said target aircraft does not cross over said missile's terminal flight path; and intercepting said target aircraft within a lethal range of said missile.

  18. 48 CFR 215.404-1 - Proposal analysis techniques.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... reliability of its estimating and accounting systems. ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Proposal analysis techniques. 215.404-1 Section 215.404-1 Federal Acquisition Regulations System DEFENSE...

  19. A Library Service Center for Suburban Maryland County Library Systems, Anne Arundel, Baltimore, Montgomery, Prince George's; An Establishment Proposal.

    ERIC Educational Resources Information Center

    Duchac, Kenneth F.

    Based on a year of inquiry and consultation, this report of the Suburban Maryland Project confirms the feasibility of cooperative technical service functions for the four public library systems of suburban Maryland. It is recommended that the proposed Library Service Center be assigned the ordering, acquisition, cataloging, preparation for book…

  20. Data acquisition and readout system for the LUX dark matter experiment

    NASA Astrophysics Data System (ADS)

    Akerib, D. S.; Bai, X.; Bedikian, S.; Bernard, E.; Bernstein, A.; Bradley, A.; Cahn, S. B.; Carmona-Benitez, M. C.; Carr, D.; Chapman, J. J.; Clark, K.; Classen, T.; Coffey, T.; Curioni, A.; Dazeley, S.; de Viveiros, L.; Dragowsky, M.; Druszkiewicz, E.; Faham, C. H.; Fiorucci, S.; Gaitskell, R. J.; Gibson, K. R.; Hall, C.; Hanhardt, M.; Holbrook, B.; Ihm, M.; Jacobsen, R. G.; Kastens, L.; Kazkaz, K.; Lander, R.; Larsen, N.; Lee, C.; Leonard, D.; Lesko, K.; Lyashenko, A.; Malling, D. C.; Mannino, R.; McKinsey, D. N.; Mei, D.; Mock, J.; Morii, M.; Nelson, H.; Nikkel, J. A.; Pangilinan, M.; Phelps, P.; Shutt, T.; Skulski, W.; Sorensen, P.; Spaans, J.; Stiegler, T.; Svoboda, R.; Sweany, M.; Szydagis, M.; Thomson, J.; Tripathi, M.; Verbus, J. R.; Walsh, N.; Webb, R.; White, J. T.; Wlasenko, M.; Wolfs, F. L. H.; Woods, M.; Zhang, C.

    2012-03-01

    LUX is a two-phase (liquid/gas) xenon time projection chamber designed to detect nuclear recoils from interactions with dark matter particles. Signals from the LUX detector are processed by custom-built analog electronics which provide properly shaped signals for the trigger and data acquisition (DAQ) systems. The DAQ is composed of commercial digitizers with firmware customized for the LUX experiment. Data acquisition systems in rare-event searches must accommodate high rate and large dynamic range during precision calibrations involving radioactive sources, while also delivering low threshold for maximum sensitivity. The LUX DAQ meets these challenges using real-time baseline suppression that allows for a maximum event acquisition rate in excess of 1.5 kHz with virtually no deadtime. This paper describes the LUX DAQ and the novel acquisition techniques employed in the LUX experiment.

  1. Use of Low-Cost Acquisition Systems with an Embedded Linux Device for Volcanic Monitoring.

    PubMed

    Moure, David; Torres, Pedro; Casas, Benito; Toma, Daniel; Blanco, María José; Del Río, Joaquín; Manuel, Antoni

    2015-01-01

    This paper describes the development of a low-cost multiparameter acquisition system for volcanic monitoring that is applicable to gravimetry and geodesy, as well as to the visual monitoring of volcanic activity. The acquisition system was developed using a System on a Chip (SoC) Broadcom BCM2835 Linux operating system (based on DebianTM) that allows for the construction of a complete monitoring system offering multiple possibilities for storage, data-processing, configuration, and the real-time monitoring of volcanic activity. This multiparametric acquisition system was developed with a software environment, as well as with different hardware modules designed for each parameter to be monitored. The device presented here has been used and validated under different scenarios for monitoring ocean tides, ground deformation, and gravity, as well as for monitoring with images the island of Tenerife and ground deformation on the island of El Hierro. PMID:26295394

  2. Use of Low-Cost Acquisition Systems with an Embedded Linux Device for Volcanic Monitoring.

    PubMed

    Moure, David; Torres, Pedro; Casas, Benito; Toma, Daniel; Blanco, María José; Del Río, Joaquín; Manuel, Antoni

    2015-08-19

    This paper describes the development of a low-cost multiparameter acquisition system for volcanic monitoring that is applicable to gravimetry and geodesy, as well as to the visual monitoring of volcanic activity. The acquisition system was developed using a System on a Chip (SoC) Broadcom BCM2835 Linux operating system (based on DebianTM) that allows for the construction of a complete monitoring system offering multiple possibilities for storage, data-processing, configuration, and the real-time monitoring of volcanic activity. This multiparametric acquisition system was developed with a software environment, as well as with different hardware modules designed for each parameter to be monitored. The device presented here has been used and validated under different scenarios for monitoring ocean tides, ground deformation, and gravity, as well as for monitoring with images the island of Tenerife and ground deformation on the island of El Hierro.

  3. Use of Low-Cost Acquisition Systems with an Embedded Linux Device for Volcanic Monitoring

    PubMed Central

    Moure, David; Torres, Pedro; Casas, Benito; Toma, Daniel; Blanco, María José; Del Río, Joaquín; Manuel, Antoni

    2015-01-01

    This paper describes the development of a low-cost multiparameter acquisition system for volcanic monitoring that is applicable to gravimetry and geodesy, as well as to the visual monitoring of volcanic activity. The acquisition system was developed using a System on a Chip (SoC) Broadcom BCM2835 Linux operating system (based on DebianTM) that allows for the construction of a complete monitoring system offering multiple possibilities for storage, data-processing, configuration, and the real-time monitoring of volcanic activity. This multiparametric acquisition system was developed with a software environment, as well as with different hardware modules designed for each parameter to be monitored. The device presented here has been used and validated under different scenarios for monitoring ocean tides, ground deformation, and gravity, as well as for monitoring with images the island of Tenerife and ground deformation on the island of El Hierro. PMID:26295394

  4. Experiences with the application of LAN emulation in a data acquisition system

    SciTech Connect

    Laat, C.T.A.M. de; Kuijer, P.G.; Olthuis, H.P.; Giesing, V.J.; Venema, J.

    1997-08-01

    Distributed data-acquisition and run-control system was developed for controlling and monitoring all experiments in the Nuclear Physics Department at Utrecht University, The Netherlands. The system consists of two almost independent parts: the readout hardware and real-time software system UDAQ, and the monitoring and control software Utrecht Measurement Analysis and Control utility (UMAC). The authors applied for the first time the ATM technology and the LAN Emulation protocol in an existing data acquisition system. The distributed data acquisition system, based on standard host computers connected via TCP/IP over ethernet to processors in VME crates was upgraded using ethernet to ATM bridges and ATM switches. The maximum data rates in the new situation are a factor of five higher than in the previous architecture because the VME processors have individual bottleneck-free network connections to the host computer. This system scales with the available ATM network bandwidth and host computer CPU power.

  5. Study on data acquisition system for living environmental information for biofication of living spaces

    NASA Astrophysics Data System (ADS)

    Shimoyama, Norihisa; Mita, Akira

    2008-03-01

    In Japan's rapidly aging society, the number of elderly people living alone increases every year. Theses elderly people require more and more to maintain as independent a life as possible in their own homes. It is necessary to make living spaces that assist in providing safe and comfortable lives. "Biofication of Living Spaces" is proposed with the concept of creating save and pleasant living environments. It implies learning from biological systems, and applying to living spaces features such as high adaptability and excellent tolerance to environmental changes. As a first step towards realizing "Biofied Spaces", a system for acquisition and storing information must be developed. This system is similar to the five human senses. The information acquired includes environmental information such as temperature, human behavior, psychological state and location of furniture. This study addresses human behavior as it is the most important factor in design of a living space. In the present study, pyroelectric infrared sensors were chosen for human behavior recognition. The pyroelectric infrared sensor is advantageous in that it has no limitation on the number of sensors put in a single space because sensors do not interfere with each other. Wavelet analysis was applied to the output time histories of the pyroelectric infrared sensors. The system successfully classified walking patterns with 99.5% accuracy of walking direction (from right or left) and 85.7% accuracy of distance for 440 patterns pre-learned and an accuracy of over 80% accuracy of walking direction for 720 non-learned patterns.

  6. Use of a priori statistics to minimize acquisition time for RFI immune spread spectrum systems

    NASA Technical Reports Server (NTRS)

    Holmes, J. K.; Woo, K. T.

    1978-01-01

    The optimum acquisition sweep strategy was determined for a PN code despreader when the a priori probability density function was not uniform. A psuedo noise spread spectrum system was considered which could be utilized in the DSN to combat radio frequency interference. In a sample case, when the a priori probability density function was Gaussian, the acquisition time was reduced by about 41% compared to a uniform sweep approach.

  7. Lidar data acquisition system for detecting atmospheric temperature and extinction coefficient

    NASA Astrophysics Data System (ADS)

    Chen, Wenbo; Guo, Pan; Chen, Siying; Zhang, Yinchao; Ge, Xianying; Cui, Xiao; Bu, Zhichao

    2011-11-01

    Digital data acquisition system is a key part of the whole lidar system, which plays an important role in ensuring detecting accuracy and is the emphasis of this paper. Lidar system could detect both Raman and Mie backscattering signal simultaneously. A digital data acquisition system is designed to capture the signal in this paper. A FPGA chip is used as an essential part in the digital data acquisition system to control time sequence and process capturing data. Then the data is transmitted into the computer through a USB interface, and displayed in the real-time by dedicated software. Three channels of the system can be programmed separately to measure Mie and Raman scattering signal simultaneously within a single measurement. Moreover, acquisition resolution can be chosen among 15m, 30m and 45m. Meanwhile, some other detecting parameters can also be specified, such as height layers and so on. In the aspect of communicating with PC, a Cypress USB CY7C68013A chip is used in this design. The interface is set to work in Slave FIFO mode in the USB firmware, by which FPGA can control USB easily, just like controlling a normal external FIFO. Usually, USB interface can transmit the data faster and more convenient than other PC interfaces. Results of experiments demonstrate that the digital data acquisition system works correctly and accurately.

  8. Web-based data acquisition and management system for GOSAT validation Lidar data analysis

    NASA Astrophysics Data System (ADS)

    Okumura, Hiroshi; Takubo, Shoichiro; Kawasaki, Takeru; Abdullah, Indra N.; Uchino, Osamu; Morino, Isamu; Yokota, Tatsuya; Nagai, Tomohiro; Sakai, Tetsu; Maki, Takashi; Arai, Kohei

    2012-11-01

    An web-base data acquisition and management system for GOSAT (Greenhouse gases Observation SATellite) validation lidar data analysis is developed. The system consists of data acquisition sub-system (DAS) and data management sub-system (DMS). DAS written in Perl language acquires AMeDAS ground-level meteorological data, Rawinsonde upper-air meteorological data, ground-level oxidant data, skyradiometer data, skyview camera images, meteorological satellite IR image data and GOSAT validation lidar data. DMS written in PHP language demonstrates satellite-pass date and all acquired data.

  9. Data acquisition system for the neutron scattering instruments at the intense pulsed neutron source

    SciTech Connect

    Crawford, R.K.; Daly, R.T.; Haumann, J.R.; Hitterman, R.L.; Morgan, C.B.; Ostrowski, G.E.; Worlton, T.G.

    1981-01-01

    The Intense Pulsed Neutron Source (IPNS) at Argonne National Laboratory is a major new user-oriented facility which is now coming on line for basic research in neutron scattering and neutron radiation damage. This paper describes the data-acquisition system which will handle data acquisition and instrument control for the time-of-flight neutron-scattering instruments at IPNS. This discussion covers the scientific and operational requirements for this system, and the system architecture that was chosen to satisfy these requirements. It also provides an overview of the current system implementation including brief descriptions of the hardware and software which have been developed.

  10. 75 FR 2457 - Defense Federal Acquisition Regulation Supplement; Business Systems-Definition and Administration...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-15

    ... Federal Acquisition Regulation Supplement; Business Systems--Definition and Administration (DFARS Case... Regulation Supplement (DFARS) to improve the effectiveness of DoD oversight of contractor business systems.... Background Contractor business systems and internal controls are the first line of defense against...

  11. DDS-Suite - A Dynamic Data Acquisition, Processing, and Analysis System for Wind Tunnel Testing

    NASA Technical Reports Server (NTRS)

    Burnside, Jathan J.

    2012-01-01

    Wind Tunnels have optimized their steady-state data systems for acquisition and analysis and even implemented large dynamic-data acquisition systems, however development of near real-time processing and analysis tools for dynamic-data have lagged. DDS-Suite is a set of tools used to acquire, process, and analyze large amounts of dynamic data. Each phase of the testing process: acquisition, processing, and analysis are handled by separate components so that bottlenecks in one phase of the process do not affect the other, leading to a robust system. DDS-Suite is capable of acquiring 672 channels of dynamic data at rate of 275 MB / s. More than 300 channels of the system use 24-bit analog-to-digital cards and are capable of producing data with less than 0.01 of phase difference at 1 kHz. System architecture, design philosophy, and examples of use during NASA Constellation and Fundamental Aerodynamic tests are discussed.

  12. Multi-tier approach for data acquisition programming in the TJ-II remote participation system

    NASA Astrophysics Data System (ADS)

    Vega, J.; Sánchez, E.; Portas, A.; Ruiz, M.; Barrera, E.; López, S.

    2004-10-01

    Programming software to setup acquisition channels during device operation has been developed for the TJ-II remote participation system. The software follows a three-tier model. A first tier (client tier) groups client software containing only user interface code. A second tier (middle tier) includes code for authorization, authentication, and query processing. A third tier (data tier) consists of a relational database server for managing configurations. Multi-platform characteristics are provided by web browsers (client tier) and web servers (middle tier). This architecture avoids that data acquisition system controllers provide access control, database support, or graphic user interface resources. Therefore, computation capabilities of these systems can mainly be devoted to data handling. LabView (from National Instruments) has been used as programming language in the acquisition systems. This design allows a very transparent management of signals, independently on hardware modules and systems.

  13. Data acquisition and processing system of the electron cyclotron emission imaging system of the KSTAR tokamak

    SciTech Connect

    Kim, J. B.; Lee, W.; Yun, G. S.; Park, H. K.; Domier, C. W.; Luhmann, N. C. Jr.

    2010-10-15

    A new innovative electron cyclotron emission imaging (ECEI) diagnostic system for the Korean Superconducting Tokamak Advanced Research (KSTAR) produces a large amount of data. The design of the data acquisition and processing system of the ECEI diagnostic system should consider covering the large data production and flow. The system design is based on the layered structure scalable to the future extension to accommodate increasing data demands. Software architecture that allows a web-based monitoring of the operation status, remote experiment, and data analysis is discussed. The operating software will help machine operators and users validate the acquired data promptly, prepare next discharge, and enhance the experiment performance and data analysis in a distributed environment.

  14. Tracking and data relay satellite system - NASA's new spacecraft data acquisition system

    NASA Technical Reports Server (NTRS)

    Schneider, W. C.; Garman, A. A.

    1979-01-01

    This paper describes NASA's new spacecraft acquisition system provided by the Tracking and Data Relay Satellite System (TDRSS). Four satellites in geostationary orbit and a ground terminal will provide complete tracking, telemetry, and command service for all of NASA's orbital satellites below a 12,000 km altitude. Western Union will lease the system, operate the ground terminal and provide operational satellite control. NASA's network control center will be the focal point for scheduling user services and controlling the interface between TDRSS and the NASA communications network, project control centers, and data processing. TDRSS single access user spacecraft data systems will be designed for time shared data relay support, and reimbursement policy and rate structure for non-NASA users are being developed.

  15. MFTF-B plasma-diagnostics-system instrumentation and data-acquisition system

    SciTech Connect

    Goerz, D.A.; Lau, N.H.C.; Mead, J.E.; Throop, A.L.

    1981-10-21

    The change of scope for MFTF from a simple mirror to a tandem mirror configuration utilizing thermal barriers has expanded the range of plasma parameters and increased the requirements of the plasma diagnostics system. The instrument set that is needed for start-up operation has been identified and conceptual design work is proceeding. This paper describes the diagnostic instrumentation as presently envisioned for start-up operation, with a summary of the detectors and data channels. Also presented is an overview of the current conceptual design for the Local Control and Data Acquisition System and the Data Processing and Display system. As more detailed design is done, the exact number and nature of instruments may change, but overall, the system described here is one expected to satisfy the requirements for start-up and be expandable to the basic set of diagnostics.

  16. Pointing, acquisition, and tracking system for the free-space laser communication system SILEX

    NASA Astrophysics Data System (ADS)

    Nielsen, Toni Tolker

    1995-04-01

    The flight hardware for the European Semiconductor laser Intersatellite Link EXperiment, SILEX, is presently under integration. Qualification at equipment level has been performed during 1994 and performance testing at subsystem level is being undertaken. This paper describes the design requirements, the actual design, and the tests of the Pointing Acquisition and Tracking subsystem. It can be summarized in the following headlines: Mission overview, system tracking and pointing strategy, terminal design, PAT subsystem requirements, PAT equipment design, PAT subsystem design, and on ground verification approach.

  17. [The study on spectral reflectance reconstruction based on wideband multi-spectral acquisition system].

    PubMed

    Liu, Zhen; Wan, Xiao-Xia; Huang, Xin-Guo; Liu, Qiang; Li, Chan

    2013-04-01

    The multispectral image acquisition oriented to reproduction requests that the data is device independent and scenes independent, and can realize the characterization of the original color information. Aiming at disturbance, noise error of system, and the requirement for training samples' typical representative and correlation, the authors proposed orthogonal regression spectral algorithm and training samples selection algorithm based on subspace tracking, through the mapping function between the spectral space and color space, by selecting the best samples in typical representative and correlation samples between target samples and selected samples. The modified Sinar 75H trichromatic digital camera combined with bandpass filter glasses were used for experiment, the data show that our method has higher spectral and chromaticity accuracy, the training samples selected by subspace tracking method are uniformly distributed in the sample space, and have good orthogonality. The statistics experimental results indicate that the performance of the proposed method is obviously better than that of previous method, in both color difference error and spectral reflectance error. PMID:23841432

  18. [The study on spectral reflectance reconstruction based on wideband multi-spectral acquisition system].

    PubMed

    Liu, Zhen; Wan, Xiao-Xia; Huang, Xin-Guo; Liu, Qiang; Li, Chan

    2013-04-01

    The multispectral image acquisition oriented to reproduction requests that the data is device independent and scenes independent, and can realize the characterization of the original color information. Aiming at disturbance, noise error of system, and the requirement for training samples' typical representative and correlation, the authors proposed orthogonal regression spectral algorithm and training samples selection algorithm based on subspace tracking, through the mapping function between the spectral space and color space, by selecting the best samples in typical representative and correlation samples between target samples and selected samples. The modified Sinar 75H trichromatic digital camera combined with bandpass filter glasses were used for experiment, the data show that our method has higher spectral and chromaticity accuracy, the training samples selected by subspace tracking method are uniformly distributed in the sample space, and have good orthogonality. The statistics experimental results indicate that the performance of the proposed method is obviously better than that of previous method, in both color difference error and spectral reflectance error.

  19. System Design Description for the SY-101 Hydrogen Mitigation Test Project Data Acquisition and Control System (DACS-1)

    SciTech Connect

    ERMI, A.M.

    2000-01-24

    This document describes the hardware and software of the computer subsystems for the Data Acquisition and Control System (DACS) used in mitigation tests conducted on waste tank 241-SY-101 at the Hanford Nuclear Reservation.

  20. A PC-based single-ADC multi-parameter data acquisition system

    SciTech Connect

    Woodring, M.; Kegel, G.H.R.; Egan, J.J.

    1995-10-01

    A personal computer (PC) based mult parameter data acquisition system using the Microsoft Window operating environment has been designed and constructed. An IBI AT compatible personal computer with an Intel 486DX5 microprocessor was combined with a National Instruments ATIDIO 32 digital I/O card, a single Canberra 8713 ADC with 13-bit resolution and a modified Canberra 8223 8-input analog multiplexer to acquil data from experiments carried out at the UML Van de Graa accelerator. The accelerator data acquisition (ADAC) computer environment was programmed in Microsoft Visual BASIC for use i Windows. ADAC allows event-mode data acquisition with up to eight parameters (modifiable to 64) and the simultaneous display parameters during acquisition. Additional features of ADAC include replay of event-mode data and graphical analysis/display of data. TV ADAC environment is easy to upgrade or expand, inexpensive 1 implement, and is specifically designed to meet the needs of nuclei spectroscopy.

  1. A Data Acquisition System (DAS) for marine and ecological research from aerospace technology

    NASA Technical Reports Server (NTRS)

    Johnson, R. A.

    1972-01-01

    The efforts of researchers at Mississippi State University to utilize space-age technology in the development of a self-contained, portable data acquisition system for use in marine and ecological research are presented. The compact, lightweight data acquisition system is capable of recording 14 variables in its present configuration and is suitable for use in either a boat, pickup truck, or light aircraft. This system will provide the acquisition of reliable data on the structure of the environment and the effect of man-made and natural activities on the observed phenomenon. Utilizing both self-contained analog recording and a telemetry transmitter for real-time digital readout and recording, the prototype system has undergone extensive testing.

  2. A high speed PC-based data acquisition and control system for positron imaging

    NASA Astrophysics Data System (ADS)

    Leadbeater, T. W.; Parker, D. J.

    2009-06-01

    A modular positron camera with a flexible geometry suitable for performing Positron Emission Particle Tracking (PEPT) studies on a wide range of applications has been constructed. The demand for high speed list mode data storage required for these experiments has motivated the development of an improved data acquisition system to support the existing detectors. A high speed PC-based data acquisition system is presented. This device replaces the old dedicated hardware with a compact, flexible device with the same functionality and superior performance. Data acquisition rates of up to 80 MBytes per second allow coincidence data to be saved to disk for real-time analysis or post processing. The system supports the storage of time information with resolution of a half millisecond and remote trigger data support. Control of the detector system is provided by high-level software running on the same computer.

  3. Use of software engineering techniques in the design of the ALEPH data acquisition system

    NASA Astrophysics Data System (ADS)

    Charity, T.; McClatchey, R.; Harvey, J.

    1987-08-01

    The SASD methodology is being used to provide a rigorous design framework for various components of the ALEPH data acquisition system. The Entity-Relationship data model is used to describe the layout and configuration of the control and acquisition systems and detector components. State Transition Diagrams are used to specify control applications such as run control and resource management and Data Flow Diagrams assist in decomposing software tasks and defining interfaces between processes. These techniques encourage rigorous software design leading to enhanced functionality and reliability. Improved documentation and communication ensures continuity over the system life-cycle and simplifies project management.

  4. Study and design of cryogenic propellant acquisition systems. Volume 1: Design studies

    NASA Technical Reports Server (NTRS)

    Burge, G. W.; Blackmon, J. B.

    1973-01-01

    An in-depth study and selection of practical propellant surface tension acquisition system designs for two specific future cryogenic space vehicles, an advanced cryogenic space shuttle auxiliary propulsion system and an advanced space propulsion module is reported. A supporting laboratory scale experimental program was also conducted to provide design information critical to concept finalization and selection. Designs using localized pressure isolated surface tension screen devices were selected for each application and preliminary designs were generated. Based on these designs, large scale acquisition prototype hardware was designed and fabricated to be compatible with available NASA-MSFC feed system hardware.

  5. Data acquisition system for ion-selective potentiometric sensors

    NASA Astrophysics Data System (ADS)

    Filipkowski, Andrzej; Ogrodzki, Jan; Opalski, Leszek J.; Rybaniec, Radoslaw; Wieczorek, Piotr Z.

    2009-06-01

    The paper presents an idea and directives on construction of a measurement system for estimation of ions' concentration in water. System presented in paper has been fully designed and manufactured in Warsaw University of Technology in Institute of Electronic Systems. The measurement system works with cheap ion-selective potentiometric sensors. System allows for potentiometric, transient response and voltamperometric measurements. Data fusion method has been implemented in the system to increase the estimation's accuracy. Presented solution contains of many modern electronic elements like 32bit ARM microcontroller, precise operational amplifiers and some hydraulics subsystems essential for chemical measurements.

  6. 76 FR 40280 - Major System Acquisition; Earned Value Management

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-08

    ... CONTACT: Carl Weber, NASA, Office of Procurement, Contract Management Division (Suite 5K80); (202) 358-1784; e-mail: carl.c.weber@nasa.gov . SUPPLEMENTARY INFORMATION: I. Background NASA published a proposed rule in the Federal Register at 76 FR 7526 on February 10, 2011. The sixty day comment...

  7. A high speed data acquisition and analysis system for transonic velocity, density, and total temperature fluctuations

    NASA Technical Reports Server (NTRS)

    Clukey, Steven J.

    1988-01-01

    The high speed Dynamic Data Acquisition System (DDAS) is described which provides the capability for the simultaneous measurement of velocity, density, and total temperature fluctuations. The system of hardware and software is described in context of the wind tunnel environment. The DDAS replaces both a recording mechanism and a separate data processing system. The data acquisition and data reduction process has been combined within DDAS. DDAS receives input from hot wires and anemometers, amplifies and filters the signals with computer controlled modules, and converts the analog signals to digital with real-time simultaneous digitization followed by digital recording on disk or tape. Automatic acquisition (either from a computer link to an existing wind tunnel acquisition system, or from data acquisition facilities within DDAS) collects necessary calibration and environment data. The generation of hot wire sensitivities is done in DDAS, as is the application of sensitivities to the hot wire data to generate turbulence quantities. The presentation of the raw and processed data, in terms of root mean square values of velocity, density and temperature, and the processing of the spectral data is accomplished on demand in near-real-time- with DDAS. A comprehensive description of the interface to the DDAS and of the internal mechanisms will be prosented. A summary of operations relevant to the use of the DDAS will be provided.

  8. Multi-channel high-speed CMOS image acquisition and pre-processing system

    NASA Astrophysics Data System (ADS)

    Sun, Chun-feng; Yuan, Feng; Ding, Zhen-liang

    2008-10-01

    A new multi-channel high-speed CMOS image acquisition and pre-processing system is designed to realize the image acquisition, data transmission, time sequential control and simple image processing by high-speed CMOS image sensor. The modular structure design, LVDS and ping-pong cache techniques used during the designed image data acquisition sub-system design ensure the real-time data acquisition and transmission. Furthermore, a new histogram equalization algorithm of adaptive threshold value based on the reassignment of redundant gray level is incorporated in the image preprocessing module of FPGA. The iterative method is used in the course of setting threshold value, and a redundant graylevel is redistributed rationally according to the proportional gray level interval. The over-enhancement of background is restrained and the feasibility of mergence of foreground details is reduced. The experimental certificates show that the system can be used to realize the image acquisition, transmission, memory and pre-processing to 590MPixels/s data size, and make for the design and realization of the subsequent system.

  9. Multiprocessor data acquisition system for high event rates at the Heidelberg/Darmstadt crystal ball

    SciTech Connect

    Ender, C.; Manner, R.; Bauer, P. . Physikalisches Inst.)

    1989-10-01

    The Heidelberg/Darmstadt crystal ball detector uses a distributed data acquisition system consisting of a Fastbus/CAMAC front-end, the Heidelberg Polyp multiprocessor system with 30 processor modules, and an online VAX. For this heterogeneous multicomputer system a distributed real-time operating system was developed. The distributed computer system allows for event rates up to 2 x 10/sup 4/ events/s. It is managed user transparently and fault tolerantly.

  10. 48 CFR 49.206 - Settlement proposals.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Settlement proposals. 49.206 Section 49.206 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACT MANAGEMENT TERMINATION OF CONTRACTS Additional Principles for Fixed-Price Contracts Terminated...

  11. A prototype fully digital data acquisition system upgrade for the TOFOR neutron spectrometer at JET

    NASA Astrophysics Data System (ADS)

    Skiba, Mateusz; Ericsson, Göran; Hjalmarsson, Anders; Hellesen, Carl; Conroy, Sean; Andersson-Sundén, Erik; Eriksson, Jacob; JET Contributors

    2016-10-01

    A prototype of a fully digital data acquisition system upgrade for the TOFOR time-of-flight fusion neutron spectrometer at JET has been implemented and evaluated. The core of the system is composed of five fast PXIe waveform digitisers (1 GSPS, 12 bits) with large internal fast memory (1 GB). Due to the complexity and high requirements on timing precision of the spectrometer, the design and implementation of such a system poses numerous technical challenges, in particular regarding time alignment and synchronisation of signal paths and digitiser modules. These issues and their solutions, as pertaining to the TOFOR spectrometer, are presented in detail in the present paper. As a final assessment of the ability of the new data acquisition system to reproduce the capabilities of the original TOFOR system, a thorough comparison of results produced using both systems is presented. The comparison with TOFOR has been performed with satisfying results. Two immediate advantages of the new data acquisition system are significantly improved triggering dead time (from about 70 ns to 10 ns) and the ability to adjust the triggering thresholds as needed during the analysis step. The enhanced spectroscopic capabilities of the new data acquisition system will be reported on in future publications.

  12. Chinese-English Biliteracy Acquisition: Cross-Language and Writing System Transfer

    ERIC Educational Resources Information Center

    Wang, Min; Perfetti, Charles A.; Liu, Ying

    2005-01-01

    This study investigated cross-language and writing system relationship in biliteracy acquisition of children learning to read two different writing systems--Chinese and English. Forty-six Mandarin-speaking children were tested for their first language (Chinese-L1) and second language (English-L2) reading skills. Comparable experiments in Chinese…

  13. Cardiopulmonary data acquisition system. Version 2.0, volume 2: Detailed software/hardware documentation

    NASA Technical Reports Server (NTRS)

    1980-01-01

    Detailed software and hardware documentation for the Cardiopulmonary Data Acquisition System is presented. General wiring and timing diagrams are given including those for the LSI-11 computer control panel and interface cables. Flowcharts and complete listings of system programs are provided along with the format of the floppy disk file.

  14. Curriculum Online Review System: Proposing Curriculum with Collaboration

    ERIC Educational Resources Information Center

    Rhinehart, Marilyn; Barlow, Rhonda; Shafer, Stu; Hassur, Debby

    2009-01-01

    The Curriculum Online Review System (CORS) at Johnson County Community College (JCCC) uses SharePoint as a Web platform for the JCCC Curriculum Proposals Process. The CORS application manages proposals throughout the approval process using collaboration tools and workflows to notify all stakeholders. This innovative new program has changed the way…

  15. 111. 'PROPOSED CIRCULATION SYSTEM.' FROM FAIRFIELD COUNTY PLANNING ASSOCIATION, FAIRFIELD: ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    111. 'PROPOSED CIRCULATION SYSTEM.' FROM FAIRFIELD COUNTY PLANNING ASSOCIATION, FAIRFIELD: THE FIRST PLANNED COUNTY IN NEW ENGLAND, JUNE 1933. - Merritt Parkway, Beginning in Greenwich & running 38 miles to Stratford, Greenwich, Fairfield County, CT

  16. 112. 'PROPOSED CIRCULATION SYSTEM.' FROM FAIRFIELD COUNTY PLANNING ASSOCIATION, FAIRFIELD: ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    112. 'PROPOSED CIRCULATION SYSTEM.' FROM FAIRFIELD COUNTY PLANNING ASSOCIATION, FAIRFIELD: THE FIRST PLANNED COUNTY IN NEW ENGLAND. JUNE 1933. - Merritt Parkway, Beginning in Greenwich & running 38 miles to Stratford, Greenwich, Fairfield County, CT

  17. A proposed ecosystem services classification system to support green accounting

    EPA Science Inventory

    There are a multitude of actual or envisioned, complete or incomplete, ecosystem service classification systems being proposed to support Green Accounting. Green Accounting is generally thought to be the formal accounting attempt to factor environmental production into National ...

  18. Knowledge acquisition and representation for the Systems Test and Operations Language (STOL) Intelligent Tutoring System (ITS)

    NASA Technical Reports Server (NTRS)

    Seamster, Thomas L.; Eike, David R.; Ames, Troy J.

    1990-01-01

    This presentation concentrates on knowledge acquisition and its application to the development of an expert module and a user interface for an Intelligent Tutoring System (ITS). The Systems Test and Operations Language (STOL) ITS is being developed to assist NASA control center personnel in learning a command and control language as it is used in mission operations rooms. The objective of the tutor is to impart knowledge and skills that will permit the trainee to solve command and control problems in the same way that the STOL expert solves those problems. The STOL ITS will achieve this object by representing the solution space in such a way that the trainee can visualize the intermediate steps, and by having the expert module production rules parallel the STOL expert's knowledge structures.

  19. Electronic system for digital acquisition of rotational panoramic radiographs

    SciTech Connect

    McDavid, W.D.; Dove, S.B.; Welander, U.; Tronje, G. )

    1991-04-01

    A prototype system for digital panoramic imaging of the maxillofacial complex has been developed. In this system x-ray film is replaced by an electronic sensor that delivers the image information to a computer for storage in digital format. The images, which are similar to conventional panoramic radiographs, are displayed on a high-resolution video monitor and may be stored on optical disk for future use. Hard-copy output is also available. The present prototype system has been installed on an Orthopantomograph model OP10 panoramic x-ray machine is programmed for operation with this machine, but in principle the system can be installed on any such device. The system may be incorporated into the design of future panoramic x-ray systems or may be used to retrofit panoramic x-ray systems now using photographic film to record the radiographic image. Greater sensitivity of electronic sensors should make possible a reduction of x-ray dose to the patient, compared with film-based systems.

  20. A Proposed Method for Solving Fuzzy System of Linear Equations

    PubMed Central

    Rostami-Malkhalifeh, Mohsen; Jahanshaloo, Gholam Reza

    2014-01-01

    This paper proposes a new method for solving fuzzy system of linear equations with crisp coefficients matrix and fuzzy or interval right hand side. Some conditions for the existence of a fuzzy or interval solution of m × n linear system are derived and also a practical algorithm is introduced in detail. The method is based on linear programming problem. Finally the applicability of the proposed method is illustrated by some numerical examples. PMID:25215332

  1. A proposed method for solving fuzzy system of linear equations.

    PubMed

    Kargar, Reza; Allahviranloo, Tofigh; Rostami-Malkhalifeh, Mohsen; Jahanshaloo, Gholam Reza

    2014-01-01

    This paper proposes a new method for solving fuzzy system of linear equations with crisp coefficients matrix and fuzzy or interval right hand side. Some conditions for the existence of a fuzzy or interval solution of m × n linear system are derived and also a practical algorithm is introduced in detail. The method is based on linear programming problem. Finally the applicability of the proposed method is illustrated by some numerical examples.

  2. Dual cameras acquisition and display system of retina-like sensor camera and rectangular sensor camera

    NASA Astrophysics Data System (ADS)

    Cao, Nan; Cao, Fengmei; Lin, Yabin; Bai, Tingzhu; Song, Shengyu

    2015-04-01

    For a new kind of retina-like senor camera and a traditional rectangular sensor camera, dual cameras acquisition and display system need to be built. We introduce the principle and the development of retina-like senor. Image coordinates transformation and interpolation based on sub-pixel interpolation need to be realized for our retina-like sensor's special pixels distribution. The hardware platform is composed of retina-like senor camera, rectangular sensor camera, image grabber and PC. Combined the MIL and OpenCV library, the software program is composed in VC++ on VS 2010. Experience results show that the system can realizes two cameras' acquisition and display.

  3. A multiparameter data acquisition system based on universal serial bus interface for electron momentum spectrometer

    SciTech Connect

    Ning, C.G.; Deng, J.K.; Su, G.L.; Zhou, H.; Ren, X.G.

    2004-09-01

    A versatile multiparameter data acquisition system based on universal serial bus (USB) interface was designed and has been used on the electron momentum spectromenter. Digitized data were first buffered in a FIFO memory in an event-by-event mode with a check bit, and then transferred to computer through the USB interface. USB interface combined with a microcontroller unit provides much flexibility for data acquisition and experimental controls. The operation performance of the system is demonstrated in the measurement of electron momentum spectra of CH{sub 2}F{sub 2} molecules.

  4. An adaptive structure data acquisition system using a graphical-based programming language

    NASA Technical Reports Server (NTRS)

    Baroth, Edmund C.; Clark, Douglas J.; Losey, Robert W.

    1992-01-01

    An example of the implementation of data fusion using a PC and a graphical programming language is discussed. A schematic of the data acquisition system and user interface panel for an adaptive structure test are presented. The computer programs (a series of icons 'wired' together) are also discussed. The way in which using graphical-based programming software to control a data acquisition system can simplify analysis of data, promote multidisciplinary interaction, and provide users a more visual key to understanding their data are shown.

  5. Design and implementation of telemetry seismic data acquisition system based on embedded P2P Ethernet

    NASA Astrophysics Data System (ADS)

    Zhang, L.; Lin, J.; Chen, Z.

    2011-12-01

    A new design of telemetry seismic data acquisition system is presented which uses embedded, point to point (P2P) Ethernet networks. In our presentation, we explain the idea and motivation behind the use of P2P Ethernet topology and show the problems when such topology is used in seismic acquisition system. The presented paper focuses on the network protocols developed by us which include the generation of route table and dynamic IP address management. This new design has been implemented based on ARM and FPGA, which we have tested in laboratory and seismic exploration.

  6. Data acquisition system for X-ray free-electron laser experiments at SACLA

    PubMed Central

    Joti, Yasumasa; Kameshima, Takashi; Yamaga, Mitsuhiro; Sugimoto, Takashi; Okada, Kensuke; Abe, Toshinori; Furukawa, Yukito; Ohata, Toru; Tanaka, Ryotaro; Hatsui, Takaki; Yabashi, Makina

    2015-01-01

    A data acquisition system for X-ray free-electron laser experiments at SACLA has been developed. The system has been designed for reliable shot-to-shot data storage with a high data stream greater than 4 Gbps and massive data analysis. Configuration of the system and examples of prompt data analysis during experiments are presented. Upgrade plans for the system to extend flexibility are described. PMID:25931070

  7. Data acquisition system time measurement capabilities using WorkBench[trademark] software

    SciTech Connect

    Coutts, D.A.

    1992-04-01

    There is an increasing interest in the ability to measure transient behavior in the Heat Transfer Laboratory (HTL). To accomplish this the timing system behavior for the Data Acquisition Systems (DAS) must be evaluated. This report discusses the evaluation of a DAS timing system using WorkBench[trademark] Software in a Macintosh II environment. It also describes a method which can be successfully used to calibrate the timing system associated with the DAS.

  8. Data acquisition system time measurement capabilities using WorkBench{trademark} software

    SciTech Connect

    Coutts, D.A.

    1992-04-01

    There is an increasing interest in the ability to measure transient behavior in the Heat Transfer Laboratory (HTL). To accomplish this the timing system behavior for the Data Acquisition Systems (DAS) must be evaluated. This report discusses the evaluation of a DAS timing system using WorkBench{trademark} Software in a Macintosh II environment. It also describes a method which can be successfully used to calibrate the timing system associated with the DAS.

  9. A Microcomputer System for On-Line Acquisition of Neuromuscular Data

    PubMed Central

    Anders, R.J.; Anné, A.; Sanders, D.B.

    1977-01-01

    This paper describes an automated instrumentation system for the acquisition, analysis, and storage of miniature end-plate potentials. The system provides immediate analysis and display of MEPP frequency, peak amplitude, duration, rise-time and decay time along with the resting membrane potential (RMP) and other system characteristics. These characteristics may be automatically stored in a mass storage medium via interface with a large timesharing computing system. Statistical analysis over a long series of experiments is thus possible.

  10. Upgrading the Data Acquisition and Control System of the LANSCE LINAC

    SciTech Connect

    Baros, Dolores

    2011-01-01

    Los Alamos National Laboratory LANL is in the process of upgrading the control system for the Los Alamos Neutron Science Center (LANSCE) linear accelerator. The 38 year-old data acquisition and control equipment is being replaced with COTS hardware. An overview of the current system requirements and how the National Instruments cRIO system meets these requirements will be given, as well as an update on the installation and operation of a prototype system in the LANSCE LINAC.

  11. Knowledge acquisition for expert systems using statistical methods

    NASA Technical Reports Server (NTRS)

    Belkin, Brenda L.; Stengel, Robert F.

    1991-01-01

    A common problem in the design of expert systems is the definition of rules from data obtained in system operation or simulation. A statistical method for generating rule bases from numerical data, motivated by an example based on aircraft navigation with multiple sensors is presented. The specific objective is to design an expert system that selects a satisfactory suite of measurements from a dissimilar, redundant set, given an arbitrary navigation geometry and possible sensor failures. The systematic development of a Navigation Sensor Management (NSM) Expert System from Kalman Filter covariance data is described. The development method invokes two statistical techniques: Analysis-of-Variance (ANOVA) and the ID3 algorithm. The ANOVA technique indicates whether variations of problem parameters give statistically different covariance results, and the ID3 algorithm identifies the relationships between the problem parameters using probabilistic knowledge extracted from a simulation example set.

  12. 48 CFR 27.406-3 - Major system acquisition.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... satisfactorily met. (b) In a contract for, or in support of, a major system awarded by a civilian agency other than NASA or the U.S. Coast Guard, the following applies: (1) The contracting officer shall require...

  13. 48 CFR 27.406-3 - Major system acquisition.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... satisfactorily met. (b) In a contract for, or in support of, a major system awarded by a civilian agency other than NASA or the U.S. Coast Guard, the following applies: (1) The contracting officer shall require...

  14. Systematic methods for knowledge acquisition and expert system development

    NASA Technical Reports Server (NTRS)

    Belkin, Brenda L.; Stengel, Robert F.

    1991-01-01

    Nine cooperating rule-based systems, collectively called AUTOCREW, were designed to automate functions and decisions associated with a combat aircraft's subsystem. The organization of tasks within each system is described; performance metrics were developed to evaluate the workload of each rule base, and to assess the cooperation between the rule-bases. Each AUTOCREW subsystem is composed of several expert systems that perform specific tasks. AUTOCREW's NAVIGATOR was analyzed in detail to understand the difficulties involved in designing the system and to identify tools and methodologies that ease development. The NAVIGATOR determines optimal navigation strategies from a set of available sensors. A Navigation Sensor Management (NSM) expert system was systematically designed from Kalman filter covariance data; four ground-based, a satellite-based, and two on-board INS-aiding sensors were modeled and simulated to aid an INS. The NSM Expert was developed using the Analysis of Variance (ANOVA) and the ID3 algorithm. Navigation strategy selection is based on an RSS position error decision metric, which is computed from the covariance data. Results show that the NSM Expert predicts position error correctly between 45 and 100 percent of the time for a specified navaid configuration and aircraft trajectory. The NSM Expert adapts to new situations, and provides reasonable estimates of hybrid performance. The systematic nature of the ANOVA/ID3 method makes it broadly applicable to expert system design when experimental or simulation data is available.

  15. Research and design of portable photoelectric rotary table data-acquisition and analysis system

    NASA Astrophysics Data System (ADS)

    Yang, Dawei; Yang, Xiufang; Han, Junfeng; Yan, Xiaoxu

    2015-02-01

    Photoelectric rotary table as the main test tracking measurement platform, widely use in shooting range and aerospace fields. In the range of photoelectric tracking measurement system, in order to meet the photoelectric testing instruments and equipment of laboratory and field application demand, research and design the portable photoelectric rotary table data acquisition and analysis system, and introduces the FPGA device based on Xilinx company Virtex-4 series and its peripheral module of the system hardware design, and the software design of host computer in VC++ 6.0 programming platform and MFC package based on class libraries. The data acquisition and analysis system for data acquisition, display and storage, commission control, analysis, laboratory wave playback, transmission and fault diagnosis, and other functions into an organic whole, has the advantages of small volume, can be embedded, high speed, portable, simple operation, etc. By photoelectric tracking turntable as experimental object, carries on the system software and hardware alignment, the experimental results show that the system can realize the data acquisition, analysis and processing of photoelectric tracking equipment and control of turntable debugging good, and measurement results are accurate, reliable and good maintainability and extensibility. The research design for advancing the photoelectric tracking measurement equipment debugging for diagnosis and condition monitoring and fault analysis as well as the standardization and normalization of the interface and improve the maintainability of equipment is of great significance, and has certain innovative and practical value.

  16. Electronic system for data acquisition to study radiation effects on operating MOSFET transistors

    NASA Astrophysics Data System (ADS)

    de Oliveira, Juliano Alves; de Melo, Marco Antônio Assis; da Silveira, Marcilei A. Guazzelli; Medina, Nilberto H.

    2014-11-01

    In this work we present the development of an acquisition system for characterizing transistors under X-ray radiation. The system is able to carry out the acquisition and to storage characteristic transistor curves. To test the acquisition system we have submitted polarized P channel MOS transistors under continuous 10-keV X-ray doses up to 1500 krad. The characterization system can operate in the saturation region or in the linear region in order to observe the behavior of the currents or voltages involved during the irradiation process. Initial tests consisted of placing the device under test (DUT) in front of the X-ray beam direction, while its drain current was constantly monitored through the prototype generated in this work, the data are stored continuously and system behavior was monitored during the test. In order to observe the behavior of the DUT during the radiation tests, we used an acquisition system that consists of an ultra-low consumption16-bit Texas Instruments MSP430 microprocessor. Preliminary results indicate linear behavior of the voltage as a function of the exposure time and fast recovery. These features may be favorable to use this device as a radiation dosimeter to monitor low rate X-ray.

  17. Electronic system for data acquisition to study radiation effects on operating MOSFET transistors

    SciTech Connect

    Alves de Oliveira, Juliano; Assis de Melo, Marco Antônio; Guazzelli da Silveira, Marcilei A.; Medina, Nilberto H.

    2014-11-11

    In this work we present the development of an acquisition system for characterizing transistors under X-ray radiation. The system is able to carry out the acquisition and to storage characteristic transistor curves. To test the acquisition system we have submitted polarized P channel MOS transistors under continuous 10-keV X-ray doses up to 1500 krad. The characterization system can operate in the saturation region or in the linear region in order to observe the behavior of the currents or voltages involved during the irradiation process. Initial tests consisted of placing the device under test (DUT) in front of the X-ray beam direction, while its drain current was constantly monitored through the prototype generated in this work, the data are stored continuously and system behavior was monitored during the test. In order to observe the behavior of the DUT during the radiation tests, we used an acquisition system that consists of an ultra-low consumption16-bit Texas Instruments MSP430 microprocessor. Preliminary results indicate linear behavior of the voltage as a function of the exposure time and fast recovery. These features may be favorable to use this device as a radiation dosimeter to monitor low rate X-ray.

  18. Design of area array CCD image acquisition and display system based on FPGA

    NASA Astrophysics Data System (ADS)

    Li, Lei; Zhang, Ning; Li, Tianting; Pan, Yue; Dai, Yuming

    2014-09-01

    With the development of science and technology, CCD(Charge-coupled Device) has been widely applied in various fields and plays an important role in the modern sensing system, therefore researching a real-time image acquisition and display plan based on CCD device has great significance. This paper introduces an image data acquisition and display system of area array CCD based on FPGA. Several key technical challenges and problems of the system have also been analyzed and followed solutions put forward .The FPGA works as the core processing unit in the system that controls the integral time sequence .The ICX285AL area array CCD image sensor produced by SONY Corporation has been used in the system. The FPGA works to complete the driver of the area array CCD, then analog front end (AFE) processes the signal of the CCD image, including amplification, filtering, noise elimination, CDS correlation double sampling, etc. AD9945 produced by ADI Corporation to convert analog signal to digital signal. Developed Camera Link high-speed data transmission circuit, and completed the PC-end software design of the image acquisition, and realized the real-time display of images. The result through practical testing indicates that the system in the image acquisition and control is stable and reliable, and the indicators meet the actual project requirements.

  19. Spectral Dynamics Inc., ships hybrid, 316-channel data acquisition system to Sandia Labs.

    SciTech Connect

    Schwartz, Douglas

    2003-09-01

    Spectral Dynamics announced the shipment of a 316-channel data acquisition system. The system was custom designed for the Light Initiated High Explosive (LIHE) facility at Sandia Labs in Albuquerque, New Mexico by Spectral Dynamics Advanced Research Products Group. This Spectral Dynamics data acquisition system was tailored to meet the unique LIHE environmental and testing requirements utilizing Spectral Dynamics commercial off the shelf (COTS) Jaguar and VIDAS products supplemented by SD Alliance partner's (COTS) products. 'This system is just the beginning of our cutting edge merged technology solutions,' stated Mark Remelman, Manager for the Spectral Dynamics Advanced Research Products Group. 'This Hybrid system has 316-channels of data acquisition capability, comprised of 102.4kHz direct to disk acquisition and 2.5MHz, 200Mhz & 500Mhz RAM based capabilities. In addition it incorporates the advanced bridge conditioning and dynamic configuration capabilities offered by Spectral Dynamics new Smart Interface Panel System (SIPS{trademark}).' After acceptance testing, Tony King, the Instrumentation Engineer facilitating the project for the Sandia LIHE group commented; 'The LIHE staff was very impressed with the design, construction, attention to detail and overall performance of the instrumentation system'. This system combines VIDAS, a leading edge fourth generation SD-VXI hardware and field-proven software system from SD's Advanced Research Products Group with SD's Jaguar, a multiple Acquisition Control Peripheral (ACP) system that allows expansion to hundreds of channels without sacrificing signal processing performance. Jaguar incorporates dedicated throughput disks for each ACP providing time streaming to disk at up to the maximum sample rate. Spectral Dynamics, Inc. is a leading worldwide supplier of systems and software for advanced computer-automated data acquisition, vibration testing, structural dynamics, explosive shock, high-speed transient capture

  20. Development of an Integrated Data Acquisition System for a Small Flight Probe

    NASA Technical Reports Server (NTRS)

    Swanson, Gregory T.; Empey, Daniel M.; Skokova, Kristina A.; Venkatapathy, Ethiraj

    2012-01-01

    In support of the SPRITE concept, an integrated data acquisition system has been developed and fabricated for preliminary testing. The data acquisition system has been designed to condition traditional thermal protection system sensors, store their data to an on-board memory card, and in parallel, telemeter to an external system. In the fall of 2010, this system was integrated into a 14 in. diameter, 45 degree sphere cone probe instrumented with thermal protection system sensors. This system was then tested at the NASA Ames Research Center Aerodynamic Heating Facility's arc jet at approximately 170 W/sq. cm. The first test in December 2010 highlighted hardware design issues that were redesigned and implemented leading to a successful test in February 2011.

  1. A proposed computer-assisted preventive maintenance system.

    PubMed

    Veluchamy, S

    1982-01-01

    This paper describes a proposed Computerized Documentation System for effectively controlling all biomedical equipment preventive maintenance (PM) and repair functions to be effected by hospitals. There is a critical need for such a system to strengthen the management tools of hospital-based Biomedical/Clinical Engineering programs. The system's design objectives, implementation, and evaluation method are explained and the benefits attributable to such a computerized control system are summarized. PMID:10257192

  2. Real-Time Remote Monitoring with Data Acquisition System

    NASA Astrophysics Data System (ADS)

    Faizal Zainal Abidin, Ahmad; Huzaimy Jusoh, Mohammad; James, Elster; Junid, Syed Abdul Mutalib Al; Mohd Yassin, Ahmad Ihsan

    2015-11-01

    The purpose of this system is to provide monitoring system for an electrical device and enable remote monitoring via web based application. This monitoring system allow the user to monitor the device condition from anywhere as the information will be synchronised to the website. The current and voltage reading of the monitored equipment, ambient temperature and humidity level are monitored and recorded. These parameters will be updated on the web page. All these sensor are connected to the microcontroller and the data will saved in micro secure digital (SD) card and send all the gathered information to a web page using the GPRS service connection synchronously. The collected data will be displayed on the website and the user enable to download the data directly from the website. The system will help user to monitor the devices condition and ambient changes with ease. The system is successfully developed, tested and has been installed at residential area in Taman Cahaya Alam, Section U12, Shah Alam, Selangor, Malaysia.

  3. The relationship of acquisition systems to automated stereo correlation.

    USGS Publications Warehouse

    Colvocoresses, A.P.

    1983-01-01

    Today a concerted effort is being made to expedite the mapping process through automated correlation of stereo data. Stereo correlation involves the comparison of radiance (brightness) signals or patterns recorded by sensors. Conventionally, two-dimensional area correlation is utilized but this is a rather slow and cumbersome procedure. Digital correlation can be performed in only one dimension where suitable signal patterns exist, and the one-dimensional mode is much faster. Electro-optical (EO) systems, suitable for space use, also have much greater flexibility than film systems. Thus, an EO space system can be designed which will optimize one-dimensional stereo correlation and lead toward the automation of topographic mapping.-from Author

  4. A microcomputer based system for current-meter data acquisition

    USGS Publications Warehouse

    Cheng, R.T.; Gartner, J.W.

    1979-01-01

    The U.S. Geological Survey is conducting current measurements as part of an interdisciplinary study of the San Francisco Bay estuarine system. The current meters used in the study record current speed, direction, temperature, and conductivity in digital codes on magnetic tape cartridges. Upon recovery of the current meters, the data tapes are translated by a tape reader into computer codes for further analyses. Quite often the importance of the data processing phase of a current-measurement program is underestimated and downplayed. In this paper a data-processing system which performs the complete data processing and analyses is described. The system, which is configured around an LSI-11 microcomputer, has been assembled to provide the capabilities of data translation, reduction, and tabulation and graphical display immediately following recovery of current meters. The flexibility inherent in a microcomputer has made it available to perform many other research functions which would normally be done on an institutional computer.

  5. Acquisition System and Detector Interface for Power Pulsed Detectors

    NASA Astrophysics Data System (ADS)

    Cornat, Rémi; CALICE Colaboration

    A common DAQ system is being developed within the CALICE collaboration. It provides a flexible and scalable architecture based on giga-ethernet and 8b/10b serial links in order to transmit either slow control data, fast signals or read out data. A detector interface (DIF) is used to connect detectors to the DAQ system based on a single firmware shared among the collaboration but targeted on various physical implementations. The DIF allows to build, store and queue packets of data as well as to control the detectors providing USB and serial link connectivity. The overall architecture is foreseen to manage several hundreds of thousands channels.

  6. NSLS beam line data acquisition and analysis computer system

    SciTech Connect

    Feng-Berman, S.K.; Siddons, D.P.; Berman, L.

    1993-11-01

    A versatile computer environment to manage instrumentation alignment and experimental control at NSLS beam lines has been developed. The system is based on a 386/486 personal computer running under a UNIX operating system with X11 Windows. It offers an ideal combination of capability, flexibility, compatibility, and cost. With a single personal computer, the beam line user can run a wide range of scattering and spectroscopy experiments using a multi-tasking data collection program which can interact with CAMAC, GPIB and AT-Bus interfaces, and simultaneously examine and analyze data and communicate with remote network nodes.

  7. Development of the Data Acquisition and Processing System for a Pulsed 2-Micron Coherent Doppler Lidar System

    NASA Technical Reports Server (NTRS)

    Beyon, Jeffrey Y.; Koch, Grady J.; Kavaya, Michael J.

    2010-01-01

    A general overview of the development of a data acquisition and processing system is presented for a pulsed, 2-micron coherent Doppler Lidar system located in NASA Langley Research Center in Hampton, Virginia, USA. It is a comprehensive system that performs high-speed data acquisition, analysis, and data display both in real time and offline. The first flight missions are scheduled for the summer of 2010 as part of the NASA Genesis and Rapid Intensification Processes (GRIP) campaign for the study of hurricanes. The system as well as the control software is reviewed and its requirements and unique features are discussed.

  8. Computer system design description for SY-101 hydrogen mitigation test project data acquisition and control system (DACS-1). Revision 1

    SciTech Connect

    Truitt, R.W.

    1994-08-24

    This document provides descriptions of components and tasks that are involved in the computer system for the data acquisition and control of the mitigation tests conducted on waste tank SY-101 at the Hanford Nuclear Reservation. The system was designed and implemented by Los alamos National Laboratory and supplied to Westinghouse Hanford Company. The computers (both personal computers and specialized data-taking computers) and the software programs of the system will hereafter collectively be referred to as the DACS (Data Acquisition and Control System).

  9. A Measure of Systems Engineering Effectiveness in Government Acquisition of Complex Information Systems: A Bayesian Belief Network-Based Approach

    ERIC Educational Resources Information Center

    Doskey, Steven Craig

    2014-01-01

    This research presents an innovative means of gauging Systems Engineering effectiveness through a Systems Engineering Relative Effectiveness Index (SE REI) model. The SE REI model uses a Bayesian Belief Network to map causal relationships in government acquisitions of Complex Information Systems (CIS), enabling practitioners to identify and…

  10. State transition storyboards: A tool for designing the Goldstone solar system radar data acquisition system user interface software

    NASA Technical Reports Server (NTRS)

    Howard, S. D.

    1987-01-01

    Effective user interface design in software systems is a complex task that takes place without adequate modeling tools. By combining state transition diagrams and the storyboard technique of filmmakers, State Transition Storyboards were developed to provide a detailed modeling technique for the Goldstone Solar System Radar Data Acquisition System human-machine interface. Illustrations are included with a description of the modeling technique.

  11. Interaction of memory systems during acquisition of tool knowledge and skills in Parkinson's disease.

    PubMed

    Roy, Shumita; Park, Norman W; Roy, Eric A; Almeida, Quincy J

    2015-01-01

    Previous research suggests that different aspects of tool knowledge are mediated by different memory systems. It is believed that tool attributes (e.g., function, color) are represented as declarative memory while skill learning is supported by procedural memory. It has been proposed that other aspects (e.g., skilled tool use) may rely on an interaction of both declarative and procedural memory. However, the specific form of procedural memory underlying skilled tool use and the nature of interaction between declarative and procedural memory systems remain unclear. In the current study, individuals with Parkinson's disease (PD) and healthy controls were trained over 2 sessions, 3 weeks apart, to use a set of novel complex tools. They were also tested on their ability to recall tool attributes as well as their ability to demonstrate grasp and use of the tools to command. Results showed that, compared to controls, participants with PD showed intact motor skill acquisition and tool use to command within sessions, but failed to retain performance across sessions. In contrast, people with PD showed equivalent recall of tool attributes and tool grasping relative to controls, both within and across sessions. Current findings demonstrate that the frontal-striatal network, compromised in PD, mediates long-term retention of motor skills. Intact initial skill learning raises the possibility of compensation from declarative memory for frontal-striatal dysfunction. Lastly, skilled tool use appears to rely on both memory systems which may reflect a cooperative interaction between the two systems. Current findings regarding memory representations of tool knowledge and skill learning may have important implications for delivery of rehabilitation programs for individuals with PD.

  12. Hybrid Ion-Detector/Data-Acquisition System for a TOF-MS

    NASA Technical Reports Server (NTRS)

    Burton, William D., Jr.; Schultz, J. Albert; Vaughn, Valentine; McCully, Michael; Ulrich, Steven; Egan, Thomas F.

    2006-01-01

    A modified ion-detector/data-acquisition system has been devised to increase the dynamic range of a time-of-flight mass spectrometer (TOF-MS) that, previously, included a microchannel-plate detector and a data-acquisition system based on counting pulses and time-tagging them by use of a time-to-digital converter (TDC). The dynamic range of the TOF-MS was limited by saturation of the microchannel plate detector, which can handle no more than a few million counts per second. The modified system includes (1) a combined microchannel plate/discrete ion multiplier and (2) a hybrid data-acquisition system that simultaneously performs analog current or voltage measurements and multianode single-ion-pulse-counting time-of-flight measurements to extend the dynamic range of a TDC into the regime in which a mass peak comprises multiple ions arriving simultaneously at the detector. The multianode data are used to determine, in real time, whether the detector is saturated. When saturation is detected, the data-acquisition system selectively enables circuitry that simultaneously determines the ion-peak intensity by measuring the time profile of the analog current or voltage detector-output signal.

  13. Systematic methods for knowledge acquisition and expert system development

    NASA Technical Reports Server (NTRS)

    Belkin, Brenda L.; Stengel, Robert F.

    1991-01-01

    Nine cooperating rule-based systems, collectively called AUTOCREW which were designed to automate functions and decisions associated with a combat aircraft's subsystems, are discussed. The organization of tasks within each system is described; performance metrics were developed to evaluate the workload of each rule base and to assess the cooperation between the rule bases. Simulation and comparative workload results for two mission scenarios are given. The scenarios are inbound surface-to-air-missile attack on the aircraft and pilot incapacitation. The methodology used to develop the AUTOCREW knowledge bases is summarized. Issues involved in designing the navigation sensor selection expert in AUTOCREW's NAVIGATOR knowledge base are discussed in detail. The performance of seven navigation systems aiding a medium-accuracy INS was investigated using Kalman filter covariance analyses. A navigation sensor management (NSM) expert system was formulated from covariance simulation data using the analysis of variance (ANOVA) method and the ID3 algorithm. ANOVA results show that statistically different position accuracies are obtained when different navaids are used, the number of navaids aiding the INS is varied, the aircraft's trajectory is varied, and the performance history is varied. The ID3 algorithm determines the NSM expert's classification rules in the form of decision trees. The performance of these decision trees was assessed on two arbitrary trajectories, and the results demonstrate that the NSM expert adapts to new situations and provides reasonable estimates of the expected hybrid performance.

  14. 48 CFR 49.111 - Review of proposed settlements.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Review of proposed settlements. 49.111 Section 49.111 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACT MANAGEMENT TERMINATION OF CONTRACTS General Principles 49.111 Review of proposed settlements....

  15. 48 CFR 15.605 - Content of unsolicited proposals.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 1 2012-10-01 2012-10-01 false Content of unsolicited proposals. 15.605 Section 15.605 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES CONTRACTING BY NEGOTIATION Unsolicited Proposals 15.605 Content...

  16. 48 CFR 49.206-2 - Bases for settlement proposals.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 1 2012-10-01 2012-10-01 false Bases for settlement proposals. 49.206-2 Section 49.206-2 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION... Convenience 49.206-2 Bases for settlement proposals. (a) Inventory basis. (1) Use of the inventory basis...

  17. 48 CFR 49.206-2 - Bases for settlement proposals.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Bases for settlement proposals. 49.206-2 Section 49.206-2 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION... Convenience 49.206-2 Bases for settlement proposals. (a) Inventory basis. (1) Use of the inventory basis...

  18. 48 CFR 49.206-2 - Bases for settlement proposals.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 1 2011-10-01 2011-10-01 false Bases for settlement proposals. 49.206-2 Section 49.206-2 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION... Convenience 49.206-2 Bases for settlement proposals. (a) Inventory basis. (1) Use of the inventory basis...

  19. 48 CFR 49.206-2 - Bases for settlement proposals.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 1 2014-10-01 2014-10-01 false Bases for settlement proposals. 49.206-2 Section 49.206-2 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION... Convenience 49.206-2 Bases for settlement proposals. (a) Inventory basis. (1) Use of the inventory basis...

  20. 48 CFR 49.206-2 - Bases for settlement proposals.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 1 2013-10-01 2013-10-01 false Bases for settlement proposals. 49.206-2 Section 49.206-2 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION... Convenience 49.206-2 Bases for settlement proposals. (a) Inventory basis. (1) Use of the inventory basis...