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Vehicle interface for moisture-sensitive wiper control

  • US 5,239,244 A
  • Filed: 03/03/1992
  • Issued: 08/24/1993
  • Est. Priority Date: 03/03/1992
  • Status: Expired due to Term
First Claim
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1. In an integrated manual/automatic windshield wiper control system including an automatic moisture-sensing wiper control system and an original equipment automatic/manual wiper control system equipped with a manually controlled PULSE-WIPE mode setting, wherein the moisture-sensing wiper control system replaces the PULSE-WIPE mode setting and includes a system for adjusting the moisture sensitivity of the moisture-sensing control system which comprises a manually mechanically positioned variable resistor device associated with the PULSE-WIPE mode setting of the manual control, the improvement comprising:

  • microprocessor controller means for receiving input signals and generating output control signals;

    a sensitivity reader circuit which, with the microprocessor controller means, continually monitors the position of the variable resistor device and uses it in the control of the moisture-sensing wiper control system; and

    wherein the variable resistor device for adjusting the moisture sensitivity of the moisture-sensing system further includes linearizing means associated with the sensitivity reader circuit that produces a value in software that corresponds linearly to the mechanical position of the variable resistor device.

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