Low-Cost PC-Based Telemetry Data-Reduction System

    Research output: Contribution to conferencePaper


    The Solar Energy Research Institute's (SERI) Wind Research Branch is using Pulse Code Modulation (PCM) telemetry data-acquisition systems to study horizontal-axis wind turbines. PCM telemetry systems are used in test installations that require accurate multiple-channel measurements taken from a variety of different locations. SERI has found them ideal for use in tests requiring concurrentacquisition of data from multiple wind turbines and meteorological towers in wind parks. SERI has developed a low-cost PC-based PCM telemetry datareduction system to facilitate quick, in-the-field multiple-channel data analysis. Called the 'PC-PCM System,' it consists of two basic components. First. AT-compatible hardware boards are used for decoding and combining PCM data streams. Up to fourhardware boards can be installed in a single PC, which provides the capability to combine data from four PCM streams directly to PC disk or memory. Each stream can have up to 62 data channels. Second, a software package written for the DOS operating system was developed to simplify data-acquisition control and management. The software provides a quick, easy-to-use interface between the PC andPCM data streams. Called the 'QuickLook Data Management Program,' it is a comprehensive menu-driven package used to organize, acquire, process, and display information from incoming PCM data streams. This paper describes both hardware and software aspects of the SERI PC-PCM system, concentratmg on features that make it useful in an experiment test environment to quickly examine and verifyincoming data. Also discussed are problems and techniques associated with PC-based telemetry data acquisition, processing, and real-time display.
    Original languageAmerican English
    Number of pages9
    StatePublished - 1990
    EventFourth National Conference on Microcomputer Applications in Energy - Tucson, Arizona
    Duration: 25 Apr 199025 Apr 1990


    ConferenceFourth National Conference on Microcomputer Applications in Energy
    CityTucson, Arizona

    Bibliographical note

    Prepared for the Fourth National Conference on Microcomputer Applications in Energy, Tucson, Arizona, 25 April 1990

    NREL Publication Number

    • NREL/TP-257-3737


    • horizontal-axis wind turbines (HAWT)
    • pulse code modulation (PCM)
    • telemetry data


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