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Alertness monitor

  • US 7,071,831 B2
  • Filed: 11/07/2002
  • Issued: 07/04/2006
  • Est. Priority Date: 11/08/2001
  • Status: Expired due to Term
First Claim
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1. An alertness monitoring system which includes:

  • a) means to measure velocity and amplitude of eyelid and eye movement;

    b) storage means to continuously record the measurements;

    c) a data processor to calculate the blink amplitude to velocity ratio and/or the saccade amplitude to velocity ratio and compare the measurements against a predetermined scale, said scale being averaged measurements of the eye and eyelid movement parameters for a sample population measured against predetermined incremental blood alcohol levels;

    d) a display for showing the alertness measurement based on the scale;

    ore) an alarm means triggered by the scale reading reaching a predetermined limit based on the blood alcohol level scale.

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