Wiper control method and wiper control device
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United States of America Patent
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Jan 3, 2012
Grant Date -
Sep 4, 2008
app pub date -
May 13, 2004
filing date -
May 15, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A wiper control method and a wiper control device which can stabilize wiping rhythm of a wiper while ensuring required wiping and smoothly respond to change of a rainfall situation are provided. An adhesion cycle of a raindrop adhering on a detection surface is detected, a current adhesion cycle to be the basis when determining an intermittence time of a wiper is determined based on the detected raindrop adhesion cycle, the wiper intermittence time is determined based on the current adhesion cycle, a raindrop adhesion cycle shorter than the current adhesion cycle is detected, and when the raindrop adhesion cycle shorter than the current adhesion cycle is detected a predetermined number of times, the current adhesion cycle is changed to a shorter adhesion cycle and the wiper intermittence time is determined based on the changed current adhesion cycle.
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