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System and method of detecting drowsy driving

  • US 9,008,857 B2
  • Filed: 12/06/2013
  • Issued: 04/14/2015
  • Est. Priority Date: 12/26/2012
  • Status: Active Grant
First Claim
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1. A method of detecting drowsy driving, comprising:

  • calculating, by a controller, basic characteristics based on steering torque information and lateral displacement information for every first time;

    calculating, by the controller, basic thresholds based on the basic characteristics for a second time;

    calculating, by the controller, a current characteristic based on the steering torque information and the lateral displacement information for every third time;

    calculating, by the controller, current thresholds based on the current characteristics for a fourth time; and

    comparing, by the controller, the current thresholds and the current characteristics to determine whether drowsy driving is generated,wherein the basic characteristic and the current characteristic are any one of a limitation of a range of a maximum value and a minimum value of the information, evaluation of an inclination, and analysis of a frequency.

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