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Method and system for contactless evaluation of fatigue of an operator

  • US 7,254,439 B2
  • Filed: 12/22/2004
  • Issued: 08/07/2007
  • Est. Priority Date: 01/06/2004
  • Status: Active Grant
First Claim
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1. A method for assessing fatigue of an operator comprising the steps of:

  • a) placing an electromagnetic inductance device to be fixed to a vehicle'"'"'s safety belt and positioned against a driver'"'"'s chest;

    b) embedding another version of said device in the back of a driver'"'"'s seat;

    c) connecting said electromagnetic inductance device to a vehicles'"'"'s computer via a cable;

    d) passing an alternating current through an excitation coil;

    e) measuring at least one induced current waveform derived from a receiver coil;

    f) processing said at least one induced current waveform associated with changes in an amplitude caused by eddy current losses in a heart region;

    g) determining a fatigue level based on said changes in said eddy current.

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