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A microcomputer controlled snow ski binding system--I. Instrumentation and field evaluation.

D MacGregor, M L Hull, L K Dorius

    Journal of Biomechanics
    |January 1, 1985
    PubMed
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    This study introduces the first microcomputer-controlled ski binding system, featuring real-time control and data recording. The innovative design successfully captured boot moment components and managed ski binding release during skiing.

    Area of Science:

    • Biomechanics
    • Sports Engineering
    • Instrumentation

    Background:

    • Traditional ski bindings lack real-time data acquisition and precise control capabilities.
    • Evaluating ski binding performance and skier safety requires accurate measurement of forces and moments.
    • Existing systems do not offer integrated control and data logging for dynamic skiing analysis.

    Purpose of the Study:

    • To design and evaluate the first microcomputer-controlled ski binding system.
    • To integrate a dynamometer for measuring boot moment components.
    • To enable real-time control of ski binding release during skiing maneuvers.

    Main Methods:

    • Developed an Intel 8086 microcomputer-controlled system with an integral binding/dynamometer.
    • Utilized a strain gage dynamometer with four octagonal half strain rings to measure three moment load components.

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  • Implemented extensive operating software for data acquisition, storage, and electro-mechanical binding control.
  • Recorded dynamometer data via a miniature digital cassette tape recorder.

    • Main Results:

    • The system successfully performed real-time control and recorded dynamometer data during field evaluations.
    • The integral binding/dynamometer provided operational and mounting convenience comparable to commercial bindings.
    • The system accurately measured boot moment components and controlled ski binding release during actual skiing.
    • Presented typical moment histories for three common recreational skiing maneuvers.

    Conclusions:

    • The microcomputer-controlled ski binding system is a viable tool for analyzing skiing biomechanics.
    • This integrated system enhances the understanding of forces experienced by skiers.
    • The technology offers potential improvements in ski binding safety and performance evaluation.