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A reference dictionary of sound and vibration terms
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  • Data Acquisition System
    Data acquisition is the process of sampling signals that measure real world physical conditions and converting the resulting samples into digital numeric values that can be manipulated by a computer. Data acquisition systems (abbreviated with the acronym DAS or DAQ) typically convert analog waveforms into digital values for processing. The components of data acquisition systems include:
    a. Sensors that convert physical parameters to electrical signals.
    b. Signal conditioning circuitry to convert sensor signals into a form that can be converted to digital values.
    c. Analog-to-digital converters, which convert conditioned sensor signals to digital values.

    Data acquisition applications are controlled by software programs developed using various general purpose programming languages such as BASIC, C, FORTRAN, Java, Lisp, and Pascal. COMEDI is an open source API (application program Interface) used by applications to access and controls the data acquisition hardware. Using COMEDI allows the same programs to run on different operating systems, like Linux and Windows. Specialized software tools used for building large-scale data acquisition systems include EPICS. Graphical programming environments include ladder logic, Visual C++, Visual Basic, MATLAB and LabView.