Method of controlling a windshield wiper system

  • US 5,276,389 A
  • Filed: 12/10/1992
  • Issued: 01/04/1994
  • Est. Priority Date: 12/14/1991
  • Status: Expired due to Term
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First Claim
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1. A method of controlling a vehicular windshield wiping system, the wiping system including a sensor mounted to the windshield for monitoring a portion of the windshield and generating a sensor signal, the method comprising the steps of:

  • detecting the presence of at least one falling edge in the sensor signal, the at least one falling edge indicating the presence of moisture on the monitored portion of the windshield;

    identifying the shape of the at least one falling edge, the wiping system detecting at least one rain pattern based on the shape and number of falling edges in the sensor signal during a predetermined period of time; and

    controlling the windshield wiping system based on the identified rain pattern.

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