Showing papers on "Data acquisition published in 1973"
Patent•
6 Aug 1973
TL;DR: In this article, a circulating register for storing data covering many patients including temperature, respiration rate, and pulse rate is used to display and store data on a display of the acquisition unit.
Abstract: Medical data including temperature, respiration rate and pulse rate are measured and stored in an acquisition unit incorporating a circulating register for storing data covering many patients. An analog temperature signal is converted into binary coded decimal for visual presentation on a display of the acquisition unit. The display data is then stored in the acquisition unit memory by actuating a RECORD switch. An analog respiration rate signal and an analog pulse rate signal are also converted into binary coded decimal for sequential display and storage in the acquisition unit memory. Medical data from external sources may similarly be stored in the acquisition unit memory. This recording procedure is repeated for any number of patients desired up to the storage limit of the acquisition memory. Data stored in the acquisition unit is then transferred into a printer unit that accesses each memory location and prints the data on a separate label for each individual patient. The printer includes a hard wired minicomputer which reads in data from the acquisition unit and compares it with identifying codes for controlling a digital printer. Medical data for each patient stored in the acquisition unit is temporarily stored in a random access memory and sequentially compared with each of a plurality of identifying codes for control of the digital printer. After all patient data in the acquisition unit has been transferred into the printer memory, a signal is generated to enable clearing of the acquisition unit memory for subsequent use thereof.
109 citations
Patent•
29 Oct 1973TL;DR: In this paper, a radio transponder and a seismic detector are located at each of a plurality of spaced seismic detector stations in a seismic prospect, and a master radio station means is located in or adjacent to the prospect.
Abstract: In operations such as seismic exploration seismic waves are generated at a shot point. The amplitudes of successive samples of seismic waves appearing at a plurality of detector stations variously spaced from said shot point in the wake of generation thereof are converted to digital codes. The codes from all the detectors are transmitted in sequence and on a real time basis by spread spectrum radio pulses to a master station. A plurality of data acquisition units each including a radio transponder and a seismic detector are located at each of a plurality of spaced seismic detector stations in a seismic prospect. A master radio station means is located in or adjacent to the prospect. Means in the acquisition units and in the master station means interrogates and sequentially polls the transponder units in real time to secure and store digital samples at the master station of analog signals from the detectors at a fixed sample interval the duration of which is selected in relation to the frequencies of the signals whereby samples portray the time amplitude variations of the signals.
48 citations
TL;DR: In this article, the authors have made a theoretical and an experimental study of these phenomena and the results allow them to derive some simple rules which make the choice of parameters of the system of data acquisition easy.
Abstract: It is not possible in practice to carry out measurements in quantitative or qualitative analysis at a precision level better than 0.5% if conventional equipment such as recorders and electronic integrators are used to obtain the data. Only numerical techniques of on-line or off-line measurements associated with data handling by computer can be used. From their very nature numerical techniques are discontinuous and the number of experimental points is limited. According to information theory this discontinuous character does not imply a loss of accuracy provided that some simple relationship derived from the theory of sampled systems is fulfilled. These conditions deal with the choice of the sampling frequency, the frequency band-width of the amplifier and measurement system, and the upper limit of the signal frequency. We have made a theoretical and an experimental study of these phenomena and the results allow us to derive some simple rules which make the choice of parameters of the system of data acquisition easy. We have also determined the main sources of error in data acquisition systems and calculated their contribution.
31 citations
Patent•
3 Jul 1973TL;DR: In this paper, a system of land (field) seismic exploration which eliminates the requirement for a main land cable to transmit seismic data from the sensors to a central recorder was disclosed, and the system includes: a seismic source for generating seismic energy; a data acquisition unit for collecting seismic information; and a master control and collating unit for transmitting coded identification and command signals to the source and data acquisition units.
Abstract: OF THE DISCLOSURE A system of land (field) seismic exploration which eliminates the requirement for a main land cable to transmit seismic data from the sensors to a central recorder 18 disclosed. The system includes: a seismic source for generating seismic energy; a data acquisition unit for collecting seismic information; and a master control and collating unit for transmitting coded identification and command signals to the source and data acquisition units and collating the data from the individual tapes of the data acquisition units. Each data acquisition unit includes its own controller, sensor group, analog to digital converter, signal conditioner data recorder, and radio frequency receiver. The analog to digital converter includes a plurality of bounded amplifiers to provide a number of fixed gain stages operative throughout a 120 db dynamic range. The signal conditioner includes a large scale integrated metal oxide semiconductor chip processor for performing desired seismic data processing functions.
26 citations
TL;DR: In this paper, a voltage variable capacitance subroutine within a four-terminal Q_B field-dependent model is recommended for MOS-device and circuit modeling problems, and the importance of accurate data acquisition and model and parameter maintenance is stressed.
Abstract: Generalized MOS-device and circuit modeling problems are discussed. Guidelines for comparing MOS-device models, for selecting phenomena to be modeled, for acquiring model parameters, and for implementing the model are established. A voltage variable capacitance subroutine within a four-terminal Q_B field-dependent model is recommended. The importance of accurate data acquisition and model and parameter maintenance is stressed and computer implementation configurations are discussed.
23 citations
TL;DR: An interface for coupling a laser Raman spectrometer employing photon counting detection to an on-line programmable calculator or minicomputer and the resulting system provides both background and spectral data in digital form that allows data manipulation to be easily performed.
Abstract: An interface for coupling a laser Raman spectrometer employing photon counting detection to an on-line programmable calculator or minicomputer is described. The resulting system provides both background and spectral data in digital form that allows data manipulation to be easily performed. In addition online computer control allows the enhancement of the signal-to-noise ratio by signal averaging. The spectrum of gaseous N(2) and O(2) taken with the system illustrates the capability of the interface and computer when coupled with the spectrometer to make precise and sensitive measurements.
16 citations
Proceedings Article•
1 Jan 1973TL;DR: The Space Plasma, High Voltage Interaction Experiment (SPHINX) is an auxiliary payload satellite scheduled to be launched in January 1974 as mentioned in this paper, which was specifically designed to obtain the engineering data on the interaction of high voltage systems with the space plasma.
Abstract: The Space Plasma, High Voltage Interaction Experiment (SPHINX) is the name given to an auxiliary payload satellite scheduled to be launched in January 1974. The principal experiments carried on this satellite are specifically designed to obtain the engineering data on the interaction of high voltage systems with the space plasma. The classes of experiments are solar array segments, insulators, insulators with pin holes and conductors. The satellite is also carrying experiments to obtain flight data on three new solar array configurations; the edge illuminated-multijunction cells, the Teflon encased cells and the violet cells.
15 citations
TL;DR: Pulse generating anemometers have been incorporated into a computer-controlled data acquisition system for taking meteorological measurements and have been used successfully for three years and has now collected over 3000 hours of data.
Abstract: Pulse generating anemometers have been incorporated into a computer-controlled data acquisition system for taking meteorological measurements. A computer accepts data in digital form, and pulses from 16 anemometers can be fed into the computer via a single general purpose interface card. The interrupt system is used directly to record and count the pulses, and the necessary programmes use only 222 locations of memory. The final on-line output consists of five-minute and hourly averages of wind speed from each of the sensors and a plot of wind profiles. The system has been used successfully for three years and has now collected over 3000 hours of data.
12 citations
TL;DR: A multidetector system for regional pulmonary function evaluations using xenon-133 is described and a general description of the experimental techniques of radiospirometry and of the methods for data analysis is given.
Abstract: A multidetector system for regional pulmonary function evaluations using xenon-133 is described. Sixteen NaI(Tl) detectors (eight collinear pairs) are employed and counting data is accumulated into a 1600-word magnetic core memory via a high speed, buffered, data acquisition system. The data are read out from the magnetic core memory to digital magnetic tape for processing and analysis using a laboratory computer system. A general description of the experimental techniques of radiospirometry and of the methods for data analysis is given.
11 citations
1 Nov 1973
TL;DR: A minicomputer-based data acquisition and analysis system developed and applied to a variety of experiments involving the interactions between laser radiation and real and simulated atmospheres, with main applications as a dual-parameter analyzer.
Abstract: A minicomputer-based data acquisition and analysis system has been developed and applied to a variety of experiments involving the interactions between laser radiation and real and simulated atmospheres. This paper describes the system, its software, and main applications. System features include signal-analysis capability of both pulsed and continuous lasers, high data acquisition and computation rates, and real-time display of results. Basic system components include two minicomputers, four analog-to-digital converters, and a disk storage unit. One of the main applications of the system is as a dual-parameter analyzer in experiments to determine the transmission of laser energy in controlled atmospheres. Efforts to complete these experiments were unsuccessful until minicomputer capability was added. The resulting real-time computation and display enabled real-time calibration and experiment monitoring. Minicomputer system application on the difficult experiments has also proven successful.
TL;DR: In this paper, the authors developed methodologies that permit the rational evaluation and design of data acquisition systems for water quality management, which must necessarily include an evaluation of the cost of a data acquisition system and its effectiveness.
Abstract: Current water quality regulatory procedures are established in such a manner that they require sound data as a basis for action. In establishing the regulatory procedures, much emphasis has been placed on the water criteria, whereas little emphasis has been placed on developing the ways and means to provide meaningful data to enforce the criteria. The object of the study is to develop methodologies that permit the rational evaluation and design of data acquisition systems for water quality management. This must necessarily include an evaluation of the cost of a data acquisition system and its effectiveness. The evaluation and design procedure of the water quality data acquisition system is based on two major points. First, the strategy used by the managing agency must be related to a specific type or form of data. Second, the character of the streams to be managed must be carefully delineated. To relate these two points to some measure of system effectiveness, a data acquisition system model is developed. This model relates grab-sampling frequency to the detection of pollution events. By then determining the cost of various sampling frequencies, cost-effectiveness relationships can be developed. The procedure is applied to Colorado.
IBM1
TL;DR: A digital-to-analog converter (DAC) is described that has transformer-coupled isolation for both power and data inputs and provides a true differential output, an analog output feature available on the IBM System/7.
Abstract: A digital-to-analog converter (DAC) is described that has transformer-coupled isolation for both power and data inputs and provides a true differential output. The DAC provides a 10-bit, 10.23-V unipolar output of either polarity, depending on which of the two output lines is used as the load reference potential. The common-mode potential may be as large as 250 V, and below 120 Hz the common-mode rejection typically exceeds 100 dB. The isolated, balanced circuit eliminates environmental noise problems and permits long cabling lengths without loss of dc accuracy. The DAC is an analog output feature available on the IBM System/7, a small computer designed for data acquisition and real-time automation applications.
TL;DR: This paper tells how to do the implementation of intercomputer links in real time control and data acquisition systems using the NAL link.
Abstract: Considerations of bandwidth, noise, distance, response time, data and system integrity, maintenance, interfacing, software control, data organization, cost, and development time complicate the implementation of intercomputer links in real time control and data acquisition systems. This paper tells how to do it. The NAL link provides an example.
TL;DR: A small digital computer has been interfaced to voltage clamp control circuitry and a buffer memory in order for it to both control experiments and provide fast and flexible data acquisition.
Abstract: A small digital computer (a Digital Equip. Corp. LINC-8) has been interfaced to voltage clamp control circuitry and a buffer memory in order for it to both control experiments and provide fast and flexible data acquisition. The experiments are designed and run from the computer graphic terminal in a conversational language, offering the experimenter programmed control over input voltage-time patterns and the rate of data sampling. Because many records are usually required and biological preparations tend to deteriorate with time, automated experiment control and faster data acquisition and storage provides more dependable data than manual methods. Subsequent analysis is much more convenient when the data has been stored along with parameters values and labels in a standard format on a digital bulk storage device such as a magnetic tape or disk.
1 Jan 1973
TL;DR: The Data Acquisition and Processing Program (DAPP) is a unique and valuable data system as discussed by the authors, which includes sensors, communications, and data processing contribute to form the most responsive operational system of its kind.
Abstract: The Data Acquisition and Processing Program (DAPP) is a unique and valuable data system. The sensors, communications, and data processing contribute to form the most responsive operational system of its kind. Data from DAPP will soon be routine ly available to the meteorological community.
1 Jan 1973
Abstract: A system has been developed to sense and record eye point-of-gaze for on-line computer processing, using a Mackworth camera in conjunction with a closed-circuit television system. System optics and electronics are described, together with computer software for system calibration and automatic artifact removal.
1 Nov 1973
TL;DR: A computer-controlled engine test cell was developed for conducting complex transient experiments with automotive engines using a minicomputer with a 16 000-word 16-b core memory to perform data acquisition and closed-loop control of the engine and dynamometer.
Abstract: A computer-controlled engine test cell was developed for conducting complex transient experiments with automotive engines. The test cell uses a minicomputer with a 16 000-word 16-b core memory to perform data acquisition and closed-loop control of the engine and dynamometer. A table-driven real-time control program is used to duplicate the effects of vehicle, transmission, and road on engine operation. Reference data and acquired data are exchanged over a high-speed communications channel between the minicomputer and a centralized data acquisition computer (DAC) system. Data can be plotted against time or cross-plotted against other parameters on a graphic cathode-ray-tube display peripheral to the minicomputer. The user can interact with the system to change parameters during the running of an experiment.
TL;DR: A system has been developed to sense and record eye point-of-gaze for on-line computer processing, using a Mackworth camera in conjunction with a closed-circuit television system.
Abstract: A system has been developed to sense and record eye point-of-gaze for on-line computer processing, using a Mackworth camera in conjunction with a closed-circuit television system. System optics and electronics are described, together with computer software for system calibration and automatic artifact removal.
IBM1
TL;DR: An experimental x-y measurement system is described that was designed for the high-speed, high-precision measurements required in integrated circuit manufacturing and for optical measurement applications in which a sufficiently large data base is required for statistical process analysis.
Abstract: An experimental x-y measurement system is described that was designed for the high-speed, high-precision measurements required in integrated circuit manufacturing and for optical measurement applications in which a sufficiently large data base is required for statistical process analysis. The technology for this experimental system differs considerably from that of conventional optical measuring systems in current use and utilizes a computer for data acquisition, manipulation and evaluation. The system, utilizing the edge detection principle, presently operates at a measuring speed of 2.5 cm/s. An analysis gives both the short-term and the long-term precision of the system. The standard deviation for the short-term precision 0.038 µm.
TL;DR: The hydrogen-line interferometer system at the National Radio Astronomy Observatory (NRO) as discussed by the authors consists of telescopes, receivers, a data acquisition program, and a reduction program.
Abstract: This paper describes the hydrogen-line interferometer system at the National Radio Astronomy Observatory. The system consists of telescopes, receivers, a data acquisition program, and a reduction program. The reduction program uses a random-access data base which stores both the interferometer data and the synthesized maps. The calibration, mapping, and display of the data are described in detail
1 Sep 1973
TL;DR: The ERTS-1 payload as discussed by the authors includes three television cameras, which view the same area in three different spectral bands, and a multispectral scanner subsystem and a data collection system which collects information from some 150 remote, unattended, instrumented ground platforms.
Abstract: The ERTS-1 payload is discussed, giving attention to three television cameras, which view the same area in three different spectral bands. The payload includes also a multispectral scanner subsystem and a data collection system which collects information from some 150 remote, unattended, instrumented ground platforms. Many government agencies use ERTS-1 data as integral parts of their ongoing programs. Through its EROS program, the Interior Department represents the largest single recipient and user agency of data obtained from NASA aircraft and spacecraft designed to gather repetitive information related to a wide variety of earth-science and natural-resources disciplines. Questions of environmental impact are considered together with applications in agriculture, forestry, marine resources, geography, and the survey of water resources.
Journal Article•
TL;DR: The ability to UTILIZE the system as a PROGRAMMABLE DESK CALCULATOR when not in use for data acquisition MAKES it much more VERSATILE and ECONOMICALLY VIABLE than a DEDICATED COORDINATE DIGITIZER.
Abstract: DESIGN CONSIDERATIONS AND TEST APPLICATIONS OF ON-LINE OPERATED WANG 700 DESK CALCULATOR INTERFACED WITH A WILD A-10 STEREOPLOTTER ARE DISCUSSED. UTLIZING THE INPUT/OUTPUT CONNECTOR OF THE CALCULATOR, A SPECIAL ELECTRONIC INTERFACE USING INTEGRATED TTL-CIRCUITS WAS BUILT. THREE SEPARATE UP-DOWN COUNTERS ACCEPT EITHER SQUARE-WAVE OR PULSE OUTPUT FROM THREE INCREMENTAL SHAFT ENCODERS. STROBED INTO A BUFFER IN PARALLEL, THE PULSE COUNTS ARE READ DIGITWISE INTO THE CALCULATOR. THE INPUT PROCESS CAN BE INITIATED FROM EITHER THE KEYBOARD MANUALLY OR UNDER PROGRAM CONTROL PERIODICALLY. THE MODULAR ARRANGEMENT FEATURES DATA ACQUISITION SPEEDS UP TO 60 SPATIAL MODEL POINTS PER SECOND FLEXIBLE AND SIMPLE PROGRAMMING AND VERSATILE OUTPUT FORMAT. AS A TYPICAL ON-LINE DATA ACQUISITION SYSTEM IT SIMULTANEOUSLY CAN DIGITIZE, STORE, DISPLAY AND PROCESS PHOTOGRAMING CAPABILITY. A VARIETY OF APPLICATIONS INCLUDE ON-LINE RELATIVE AND ABSOLUTE ORIENTATION, AVERAGING REPEATED MEASUREMENTS AND INDICATING CURRENT STANDARD DEVIATIONS, STRIP FORMATION FROM INDEPENDENT MODELS, CORRECTION FOR EARTH CURVATURE, ON-LINE COMPUTATIONS AND DISPLAY OF SCALED OR TRANSFORMED MODEL COORDINATES, DISTANCES, AREAS, OR VOLUMES. THE ABILITY TO UTILIZE THE SYSTEM AS A PROGRAMMABLE DESK CALCULATOR WHEN NOT IN USE FOR DATA ACQUISITION MAKES IT MUCH MORE VERSATILE AND ECONOMICALLY VIABLE THAN A DEDICATED COORDINATE DIGITIZER. /AUTHOR/
1 Jan 1973
TL;DR: The advantages of sequential radionuclide scan data acquisition compared to incremental collection for gamma camera events have become increasingly apparent.
Abstract: The advantages of sequential radionuclide scan data acquisition compared to incremental collection for gamma camera events have become increasingly apparent. Computerized systems allow one to choose the mode of data collection, and hence are presumably more powerful than systems restricted to a single mode. To emphasize the possibilities provided by sequential acquisition, three applications are described. (CH)
TL;DR: In this paper, an evaluation of the approach and landing performance of a Kalman filter aided inertial navigation system using flight data obtained from a series of approaches and landings of the CV-340 aircraft at an instrumented test area is presented.
Abstract: An evaluation is presented of the approach and landing performance of a Kalman filter aided inertial navigation system using flight data obtained from a series of approaches and landings of the CV-340 aircraft at an instrumented test area. A description of the flight test is given, in which data recorded included: (1) accelerometer signals from the platform of an INS; (2) three ranges from the Ames-Cubic Precision Ranging System; and (3) radar and barometric altimeter signals. The method of system evaluation employed was postflight processing of the recorded data using a Kalman filter which was designed for use on the XDS920 computer onboard the CV-340 aircraft. Results shown include comparisons between the trajectories as estimated by the Kalman filter aided system and as determined from cinetheodolite data. Data start initialization of the Kalman filter, operation at a practical data rate, postflight modeling of sensor errors and operation under the adverse condition of bad data are illustrated.
TL;DR: In this article, a magnetic observatory near the ATS-1 conjugate point at Tungsten, N.W.T., Canada is described, with particular emphasis on outstanding problems.
Abstract: High quality magnetic field measurements in the auroral zone are particularly important in present studies of magnetospheric physics. The standard analog magnetometers are inappropriate because of limited dynamic range, sensitivity, and time resolution and inconveniences in the manipulation of the data. Remote observatories using satellite type magnetometers and digital data acquisition systems are therefore a desirable improvement. To complement the UCLA magnetometer on ATS-1, we have established a magnetic observatory near the ATS-1 conjugate point at Tungsten, N.W.T., Canada. The maintenance of this station and computer processing of the data have involved a number of unexpected problems which could delay similar efforts elsewhere. Therefore, the instrumentation and data processing for this observatory are described, with particular emphasis on outstanding problems. Alternatives to the use of digital incremental tape recorders as in the present system, e.g., data transmission via satellite link, are also discussed.