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Wiper control method and wiper control device

  • US 20070132417A1
  • Filed: 05/13/2004
  • Published: 06/14/2007
  • Est. Priority Date: 05/15/2003
  • Status: Active Grant
First Claim
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1. A method for controlling operation of a wiper by reflecting light emitted from a light emitting element on a detection surface provided at a part of a wiper wiping area of a windshield glass of a vehicle and by detecting a state of said detection surface by receiving said reflected light by a light receiving element, comprising the steps of:

  • (a) determining entrance of said vehicle to a rainfall shutoff environment;

    (b) making setting to lower a wiping level for a low-level rainfall less than a predetermined rainfall level in response to the determination in said Step (a) and to raise the wiping level for a high-level rainfall at the predetermined rainfall level or more; and

    (c) determining the rainfall level by detecting adhesion of raindrops and determining operation of said wiper based on the wiping level set in said Step (b).

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