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DATA ACQUISITION SYSTEMS FOR AUDIO-FREQUENCY, MECHANICAL-TESTING APPLICATIONS — RECENT DEVELOPMENTS 2001 —Smith, Strether 10 1900 (has links)
International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada / The objective of any data acquisition system is to make accurate measurements of physical
phenomena. Many of the phenomena to be characterized contain data that is in the audio-frequency
range between 0 and 50,000 Hertz. Examples include structural vibration, wind-tunnel
measurements, turbine engines and acoustics in air and water. These tests often require a large
number of channels and may be very expensive. In some cases, there may be only one opportunity
to acquire the data.
This paper describes a testing/measurement philosophy and the use of advances in available
hardware/software systems to implement the requirements. Primary emphasis is on robustness
(assurance that critical data is properly recorded), measurement/characterization of unexpected
results (generated by accidents or unexpected behavior), and test safety (for both the test article and
the facility).
Finally, a data acquisition system that encompasses the features discussed is described.
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CONCEPTUAL DESIGN OF A PCM DIGITAL RECORDER FOR ON-BOARD APPLICATIONSPenna, Sergio D., Rios, Domingos B. 10 1900 (has links)
International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California / On reviewing current PCM on-board data acquisition systems design is not very uncommon to find lots
of useful signals being generated together with the PCM stream, such as bit clocks, word clocks, minor
and major frame pulses. The purpose of this paper is to demonstrate a conceptual design of a digital
recording device that takes advantage of these signals to collect data directly into a computer compatible
disk file. Such device can eliminate the need of further PCM signal processing after the test and speed up
the conversion process of pure digital sampling values into floating point numbers.
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The F-22A Quick Response Package-QRPNatale, Louis, Roach, John 10 1900 (has links)
ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada / The F-22 Quick Response Package was designed to efficiently solve aircraft anomalies in the field. Providing this capability would enhance aircraft combat availability and lower maintenance costs. Using the current F-22 instrumentation flight test system design package as a baseline, a smaller, and much more versatile, version of the system was designed. This new design concept includes a data acquisition and recording system on a single pallet called the Quick Response Package (QRP). The QRP can be installed in any operational F-22 war fighter in a single production shift with no intrusion to the aircraft's systems readiness. The data acquisition and recording capabilities provide a near real-time field solution without excessive downtime or pilot intervention. This paper describes the design requirements, the design concept and packaging details of the QRP.
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A generic intelligent control system for grindingChen, Yinnan January 1997 (has links)
No description available.
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Data Acquisition and Distribution System (DADS)Shipley, Lawrence E., Roth, Mari L. 11 1900 (has links)
International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada / The Data Acquisition and Distribution System (DADS) transparently collects data from a ship's combat system and transfers that data by satellite to a shore site. The system was developed by the Naval Surface Warfare Center Port Hueneme Division (NSWC PHD). DADS supports surface ship data collection, display, distribution, and debrief capabilities. NSWC PHD personnel used equipment assets developed in-house and purchased data communications hardware and software to develop DADS. A satellite terminal was placed outside Building 1380, and analog telephone lines were installed, linking the Data Communications and Control Laboratory (DCCL) with the Satellite Earth Station in Santa Paula, CA. A shipboard DADS transparently taps a ship's Combat System and collects selected data files. The data is compressed and archived. After shore site personnel select the data required for analysis, DADS encrypts it, and transmits the data via satellite to the shore site for reconstruction and analysis. DADS is unattended. The portable shipboard system equipment and software is controlled from a shore site via the International Maritime Satellite (INMARSAT). The DCC supports transmission speeds of up to 9.6 kilobits/second when connected to a communication system with this capability.
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The Common Airborne Instrumentation System Program Management OverviewBrown, Thomas R., Jr. 10 1900 (has links)
International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, California / The Department of Defense, through a Tri-Service Program Office, is developing the Common Airborne Instrumentation System (CAIS) to promote standardization, commonality, and interoperability among aircraft test instrumentation systems. The advent of CAIS will change how the DoD test community conducts business. The CAIS program will allow aircraft test and evaluation facilities to utilize common airborne systems, ground support equipment, and technical knowledge for airborne instrumentation systems. The CAIS Program Office will conduct requirements analyses, manage system upgrades, and provide full life cycle support for this system. It is initiating several requirements contracts to provide direct ordering opportunities for DoD users to easily procure defined test instrumentation hardware. The program office will provide configuration management, inventory control, maintenance support, system integration, engineering support, and software management. In addition, it will continue to enhance the current system and develop new items to meet future requirements. Where existing equipment provides added benefit, this equipment may be added to the official CAIS family.
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On The Move, Interactive Telemetry Data Acquisition System for the Multiple Launch Rocket System (MLRS)Kirkpatrick, Charles R., Tuncay, A. Ayban 10 1900 (has links)
International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, Nevada / This paper describes the Launcher Instrumentation and Data Acquisition System (LIDAS) that has been developed for real-time monitoring and simultaneous recording of a diverse set of data buses on a moving MLRS launcher. The launcher onboard instrumentation consists of a central Bus Data Conversion Module (BDCM) and several specialized, intelligent "break-in" boxes. The break-in boxes collect and tag the data by using the IRIG-B standard time-code, and transfer them to the BDCM using a unique asynchronous scheme. The BDCM is built around an Intel 80960CA processor board in a VME bus environment. It coordinates all the data traffic and also stores selected data to an onboard Flash ROM data storage unit. The data from different MLRS buses are combined into a 1 megabits per second RS4-22 serial stream and telemetered to a ground station, where the user interface is provided through an IBM PC/AT type computer with touch-screen controls. The developed PC software offers several data monitoring options with engineering-unit conversions and allows simultaneous recording on a hard-disk. Because of its interactive capabilities, the system is also well suited for personnel training.
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Batch Processing of Flight Test DataTurver, Kim D. 10 1900 (has links)
International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, Nevada / Boeing's Test Data Retrieval System not only acts as an interface between the Airborne Data Acquisition System and a mainframe computer but also does batch mode processing of data at faster than real time. Analysis engineers request time intervals and measurements of interest. Time intervals and measurements requested are acquired from the flight tape, converted to first order engineering units, and output to 3480 data cartridge tape for post processing. This allows all test data to be stored and only the data of interest to be processed at any given time.
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The development of a new versatile computer controlled electrochemical/ESR data acquisition system.Mleczko, Richard R, mikewood@deakin.edu.au January 1990 (has links)
A new versatile computer controlled electrochemlcal/ESR data acquisition system has been developed for the Investigation of short-lived radicals with life-times of 20 milliseconds and greater, Different computer programs have been developed to monitor the decay of radicals; over hours or minutes, seconds or milliseconds. Signal averaging and Fourier smoothing is employed in order to improve the signal to noise ratio.
Two microcomputers are used to control the system, one home-made computer containing the M6800 chip which controls the magnetic field, and an IBM PC XT which controls the electrochemistry and the data acquisition. The computer programs are written in Fortran and C, and call machine language subroutines,
The system functions by having the radical generated by an electrochemical pulse: after or during the pulse the ESR data are collected.
Decaying radicals which have half-lives of seconds or greater have their spectra collected in the magnetic field domain, which can be swept as fast as 200 Gauss per second.
The decay of the radicals in the millisecond region is monitored by time-resolved ESR: a technique in which data is collected in both the time domain and in the magnetic field domain. Previously, time-resolved ESR has been used (without field modulation) to investigate ultra-short-lived species with life-times in the region of only a few microseconds.
The application of the data acquisition system to chemical systems is illustrated.
This is the first time a computer controlled system whereby the radical is generated by electrochemical means and subsequently the ESR data collected, has been developed.
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Upgrade of PV Lab and Implementation of Automatic Measurement System : Photovoltaic Monitoring SystemQureshi, Yasir Karim January 2012 (has links)
The report is focused on the implementation of a data acquisition system that will be used for measuring different parameters which are needed in solar panel behavior analysis. To accomplish the DAQ system a DAQ board has been designed and implemented. This DAQ board acquires measured climatic parameters that affect the PV module behavior and voltage and current of a PV module. The DAQ board may take measurements of multiple analog and digital signals that come from various sensors including solar radiation, temperature, wind sensors and other measurement devices. The DAQ board may also output analog signals for controlling other devices. The DAQ board is the basic part of the DAQ system and several of them can be connected via a single communication bus (RS485). A unique slave ID can be assigned to each DAQ board on the communication bus, which allows the control of all boards via a GUI application installed on a master computer. Therefore, the DAQ system can be used for monitoring a PV module installation as well as logging the measured data in a data storage server. This report outlines the details of the DAQ system design which are helpful in utilizing or upgrading this system. These details also include programming of DAQ board and implementation of MODBUS communication protocol within the DAQ system.
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