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Vigilance monitoring technique for vehicle operators

  • US 20070080816A1
  • Filed: 10/12/2006
  • Published: 04/12/2007
  • Est. Priority Date: 10/12/2005
  • Status: Active Grant
First Claim
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1. A vigilance monitoring system for alerting a driver of a vehicle upon detecting a state of drowsiness by calculation of a deviation between a time derivative of displacement on a driver-vehicle interface and a moving average for the time derivative of displacement to thereby quantify the state of drowsiness of the driver independent of conditions inside and outside the vehicle, the system comprising:

  • a sensor connected to at least one driver-vehicle interface to monitor displacement of the driver-vehicle interface;

    an intelligent control in communication with the sensor;

    a time derivative profile modeled from the time derivative of displacement using the intelligent control;

    a general trend modeled from the moving average of the time derivative of displacement using the intelligent control; and

    a spikiness index defined by a degree of deviation between the time derivative profile and the general trend to thereby quantify the state of drowsiness of the driver independent of conditions inside and outside of the vehicle.

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