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Data acquisition is the sampling of the real world to generate data that can be manipulated by a computer. Sometimes abbreviated DAQ or DAS, data acquisition typically involves acquisition of signals and waveforms and processing the signals to obtain desired information. The components of data acquisition systems include appropriate sensors that convert any measurement parameter to an electrical signal, which is acquired by data acquisition hardware.
Acquired data is displayed, analyzed, and stored on a computer, either using vendor supplied software, or custom displays and control can be developed using various programming languages such as BASIC, C, Fortran, Java, Lisp, Pascal. EPICS is used to build large scale data acquisition systems. Other listings of programming languages are: Categorical list of programming languages Generational list of programming languages Chronological list of programming languages Note: Esoteric programming languages have been moved to the separate List of esoteric programming languages. ...
Screenshot of Atari BASIC, one of the first BASIC languages for small computers. ...
Wikibooks has a book on the topic of C Programming The C programming language (often, just C) is a general-purpose, procedural, imperative computer programming language developed in the early 1970s by Dennis Ritchie for use on the Unix operating system. ...
Fortran (previously FORTRAN[1]) is a general-purpose[2], procedural,[3] imperative programming language that is especially suited to numeric computation and scientific computing. ...
Java is an object-oriented programming language developed by James Gosling and colleagues at Sun Microsystems in the early 1990s. ...
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Pascal is an imperative computer programming language, developed in 1970 by Niklaus Wirth as a language particularly suitable for structured programming. ...
The Experimental Physics and Industrial Control System (EPICS) is a software environment used to develop and implement distributed control systems to operate devices such as particle accelerators, telescopes and other large experiments. ...
How Data is acquired
Transducers (most often sensors) convert measurable physical phenomenon into electric signals. Examples of tranducers include microphones for sound and photocells for light. A transducer is a device, usually electrical or electronic, that converts one type of energy to another. ...
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Signals may be digital or analog depending on the tranducer used.
Signal conditioning may be necessary if the signal from the transducer is not suitable for the DAQ hardware to be used. The signal may be amplified or deamplified, or may require filtering.
DAQ hardware is what usually interfaces between the signal and a PC. It could be in the form of modules that can be connected to the computer's ports (parallel, serial, USB, etc...) or cards connected to slots (PCI, ISA) in the mother board. DAQ-cards often contain multiple components (multiplexer, ADC, DAC, TTL-IO, high speed timers, RAM). These are accessible via a bus by a micro controller, which can run small programs. The controller is more flexible than a hard wired logic, yet cheaper than a CPU so that it is all right to block it with simple polling loops. For example: Waiting for a trigger, starting the ADC, looking up the time, waiting for the ADC to finish, move value to RAM, switch multiplexer, get TTL input, let DAC proceede with voltage ramp.
Driver Software that usually comes with the DAQ hardware or from other vendors, allows the operating system to recognize the DAQ hardware and programs to access the signals being read by the DAQ hardware.
History Scientific Solutions[1] invented the PC based data acquisition in 1981 with the introduction of the LabMaster, BaseBoard,DADIO,LabTender, IEEE-488 hardware and LabPac software. [2] [3] [4] [5] [6] The Hewlett-Packard Instrument Bus (HP-IB), is a short-range digital communications cable standard developed by Hewlett-Packard (HP) in the 1970s for connecting electronic test and measurement devices (e. ...
See also Signal processing is the processing, amplification and interpretation of signals and deals with the analysis and manipulation of signals. ...
This article or section may be confusing or unclear for some readers, and should be edited to rectify this. ...
Data analysis is the act of transforming data with the aim of extracting useful information and facilitating conclusions. ...
A laser range scanner acquires three dimensional geometry by scanning a laser across an object. ...
This article or section should include material from AD converters In electronics, an analog-to-digital converter (abbreviated ADC, A/D, or A to D) is a device that converts continuous signals to discrete digital numbers. ...
In electronic instrumentation and signal processing, a time to digital converter (abbreviated TDC) is a device for converting a signal of sporadic pulses into a digital representation of their time indices. ...
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Camac Harps (Les Harpes Camac) is a French company that manufactures pedal (concert) harps, lever (folk) harps, and electric pedal and lever harps. ...
PXI is one of several electronic instrumentation platforms in current use. ...
VMEbus is a computer bus standard originally developed for the Motorola 68000 line of CPUs, but later widely used for many applications and standardized by the IEC as ANSI/IEEE 1014-1987. ...
The VXI bus architecture is an open standard platform for automated test based upon VMEbus. ...
The Experimental Physics and Industrial Control System (EPICS) is a software environment used to develop and implement distributed control systems to operate devices such as particle accelerators, telescopes and other large experiments. ...
Generic data acquisition (GDA) is an extensible and flexible data acquisition software toolkit for synchrotrons being developed by the synchrotrons Diamond Light Source and the SRS at Daresbury Laboratory. ...
LabVIEW (short for Laboratory Virtual Instrumentation Engineering Workbench) is a platform and development environment for a visual programming language from National Instruments. ...
References - ^ http://www.scientificsolutions.com/
- ^ COMDEX FALL 1981, BYTE VOL7 NO.1
- ^ PC Magazine Vol1 No.1
- ^ PC World Issue1 No.1
- ^ PC TechJournal, Vol1 No.1
- ^ Test&Meausrement World Vol11 No 10 Decade of Progress Award: Scientific Solutions - LabMaster
Books on Data Acquisition - Charles D. Spencer (1990). Digital Design for Computer Data Acquisition. Cambridge University Press. ISBN 0-521-37199-6.
- B.G. Thompson & A. F. Kuckes (1989). IBM-PC in the laboratory. Cambridge University Press. ISBN 0-521-32199-9.
- W. R. Leo: "Techniques for Nuclear and Particle Physics Experiments", Springer, 1994, ISBN 3-540-57280-5
Articles on Data Acquisition
Articles about generic data acquisition systems - E. T. Subramaniam, Kusum Rani, B. P. Ajith Kumar, and R. K. Bhowmik (Sept 2006). "Ethernet based list processing controller for high speed data acquisition systems". Review of Scientific Instruments 77: 096102. DOI:10.1063/1.2338300.
- Robson CCW, Bousselham A, Bohm C (Aug 2006). "An FPGA-based general-purpose data acquisition controller". IEEE Transactions on Nuclear Science 53 (4): 2092-2096. DOI:10.1109/TNS.2006.878698.
- Xia YP (July 2004). "Serial port controls 16 independent output lines". Electronics World: 41.
- Mason G (Nov 2002). "A handheld data acquisition system for use in an undergraduate data acquisition course". IEEE Transactions on Education 45 (4): 388 - 393. DOI:10.1109/TE.2002.804402.
- Fullem TZ, Spencer CD (Sep 2002). "A Universal Serial Bus interface for electronics projects and instruments". American journal of physics 70 (9): 972-974. DOI:10.1119/1.1477436.
A digital object identifier (or DOI) is a permanent identifier (permalink) given to a World Wide Web file or other Internet document so that if its Internet address changes, users will be redirected to its new address. ...
A digital object identifier (or DOI) is a permanent identifier (permalink) given to a World Wide Web file or other Internet document so that if its Internet address changes, users will be redirected to its new address. ...
A digital object identifier (or DOI) is a permanent identifier (permalink) given to a World Wide Web file or other Internet document so that if its Internet address changes, users will be redirected to its new address. ...
A digital object identifier (or DOI) is a permanent identifier (permalink) given to a World Wide Web file or other Internet document so that if its Internet address changes, users will be redirected to its new address. ...
A digital object identifier (or DOI) is a permanent identifier (permalink) given to a World Wide Web file or other Internet document so that if its Internet address changes, users will be redirected to its new address. ...
Articles about how to teach a course on data acquisition - J. Maps (Jul 1993). "A computer-based data acquisition laboratory for undergraduates". American Journal of Physics 61 (7): 651-655. DOI:10.1119/1.17175.
- Carl A. Kocher (Mar 1992). "A laboratory course in computer interfacing and instrumentation". American Journal of Physics 60 (3): 246-251. DOI:10.1119/1.16903.
A digital object identifier (or DOI) is a permanent identifier (permalink) given to a World Wide Web file or other Internet document so that if its Internet address changes, users will be redirected to its new address. ...
A digital object identifier (or DOI) is a permanent identifier (permalink) given to a World Wide Web file or other Internet document so that if its Internet address changes, users will be redirected to its new address. ...
A digital object identifier (or DOI) is a permanent identifier (permalink) given to a World Wide Web file or other Internet document so that if its Internet address changes, users will be redirected to its new address. ...
A digital object identifier (or DOI) is a permanent identifier (permalink) given to a World Wide Web file or other Internet document so that if its Internet address changes, users will be redirected to its new address. ...
Articles about data acquisition systems for specific applications - DeSerio R (April 2004). "Synchronous analog I/O for acquisition of chaotic data in periodically driven systems". American journal of physics 72 (4): 553-558. DOI:10.1119/1.1648330.
- Ochoa OR, Kolp NF (Nov 1997). "The computer mouse as a data acquisition interface: Application to harmonic oscillators". American Journal of Physics 65 (11): 1115-1118. DOI:10.1119/1.18732.
- Spencer CD, Paul SR (Jan 1997). "Hardware and software for a pulse height analyzer linked to a personal computer". Computers in Physics 11 (1): 101-109. DOI:10.1063/1.168598.
A digital object identifier (or DOI) is a permanent identifier (permalink) given to a World Wide Web file or other Internet document so that if its Internet address changes, users will be redirected to its new address. ...
A digital object identifier (or DOI) is a permanent identifier (permalink) given to a World Wide Web file or other Internet document so that if its Internet address changes, users will be redirected to its new address. ...
A digital object identifier (or DOI) is a permanent identifier (permalink) given to a World Wide Web file or other Internet document so that if its Internet address changes, users will be redirected to its new address. ...
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