Patent ID: 8089365
Filing Date: 2012-01-03
Classification: B60S,G01N

Abstract:
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) detecting an adhesion cycle of a raindrop adhering on said detection surface; (b) determining a current adhesion cycle to be the basis when determining intermittence time of said wiper based on said detected raindrop adhesion cycle; (c) determining said wiper intermittence time based on said current adhesion cycle; (d) detecting said raindrop adhesion cycle shorter than said current adhesion cycle; (e) changing the current adhesion cycle to a shorter adhesion cycle if said raindrop adhesion cycle shorter than said current adhesion cycle is detected a predetermined number of times; and (f) determining said wiper intermittence time based on the changed current adhesion cycle.