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Doze prevention system

  • US 4,725,824 A
  • Filed: 11/24/1986
  • Issued: 02/16/1988
  • Est. Priority Date: 06/15/1983
  • Status: Expired due to Term
First Claim
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1. A doze prevention system comprising:

  • eyeblink sensor means for generating a waveform of eyeblink activity of an operator;

    eyeblink detecting means connected to said eyeblink sensor means for detecting eyeblink pulses in said waveform and for extracting at least one inherent attribute of each eyeblink pulse as a parameter;

    awake-state pattern generating means responsive to said eyeblink detecting means detecting a plurality of eyeblink pulses during an awake-state period for determining and recording an awake-state parameter pattern from the extracted parameters of the awake-state plurality of eyelink pulses;

    deviation determining means responsive to said eyeblink detecting means detecting an eyeblink pulse during a monitor-for-doze period after the awake-state period for determining a deviation of the extracted parameter of the monitor-for-doze eyeblink pulse from the awake-state parameter pattern to generate an output; and

    alert means connected to said deviation determining means for producing an alarm signal in response to the output of said deviation determining means.

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