| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To accurately detect the change in the rainfall state, and to reflect it in controlling of a wiper. <P>SOLUTION: The wiper controller which detects the raindrops adhered onto windshield glass G of a vehicle to control the wiper based on the detected result is provided with a wiped water measurement part 30 for calculating an amount of water wiped by the wiper, a wiper operation time measurement part 40 for obtaining the actual wiper operation time based on the ON/OFF signal of a wiper motor for driving the wiper, a delay time calculation part 60 which obtains the wiper operation delay time by comparing the actual wiper operation time with the reference wiper operation time, and an operation change determination part 70 for determining with respect to the need for changing the wiper operation based on the wiper operation delay time and the amount of water wiped by the wiper. The change in the rainfall state is derived from the wiper operation delay time and the amount of water wiped by the wiper to appropriately control the wiper in response to the change in the rainfall state. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
