Smooth rain-responsive wiper control

  • US 5,568,027 A
  • Filed: 05/19/1995
  • Issued: 10/22/1996
  • Est. Priority Date: 05/19/1995
  • Status: Expired due to Fees
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First Claim
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1. A rain responsive windshield wiper control system for a vehicle of the type having a windshield, a windshield wiper adapted to be driven by a windshield wiper motor for sweeping moisture from the windshield, the windshield wiper control system comprising:

  • (a) a sensor disposed at a predetermined location on a vehicle windshield traversed by the wiper for generating an output indicative of the moisture impinging on the windshield proximate the predetermined location, said sensor means producing a recent rain flux value;

    (b) a plurality of averaging means operatively coupled to receive said recent rain flux values and to produce outputs to a combining means for forming a single weighted average value of rain flux;

    (c) wiper mode control means operatively coupled to receive said single weighted average value of rain flux for establishing a sweep rate for the windshield wiper; and

    (d) means for electrically driving the wiper motor at the sweep rate determined by the wiper mode control means.

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