Wiper control system and method for controlling wiper
AssigneesDenso Corporation, Nippon Soken, Inc.
InventorsTaiji Morishita, Masao Tokunaga
Life of this patent
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Abstract
A raindrop sensor detects an amount of raindrops landed on a window glass and outputs a measurement signal to a microcomputer. The microcomputer calculates an average amount of raindrops by averaging a predetermined number of the latest measurements. The microcomputer calculates an interval time for the wiper based on the calculated average amount of raindrops. At this time, when the calculated average amount of raindrops deviates from a predetermined reference value, the microcomputer calculates the average amount of raindrops using a smaller number of the latest measurements.
Claims14
A wiper control system comprising:
- a wiper for wiping off raindrops landed on a window glass;
- a sensing means for taking a measurement of an amount of raindrops present in a predetermined area of the window glass at a predetermined time in each wiping period of the wiper, wherein the sensing means is disposed in a wiping range of the wiper on the window glass;
- an average amount calculating means for calculating an average amount of raindrops in each wiping period of the wiper by averaging a predetermined number of the latest measurements measured with the sensing means;
- and
- a wiper control means for controlling operation of the wiper based on the average amount of raindrops, which is calculated by the average amount calculating means.
A method for controlling a wiper, which wipes off raindrops landed on a window glass, the method comprising:
- taking a measurement of an amount of raindrops present in a predetermined area of the window glass at a predetermined time in each wiping period of the wiper;
- calculating an average amount of raindrops in each wiping period of the wiper by averaging a predetermined number of the latest measurements;
- and
- controlling operation of the wiper based on the average amount of raindrops.
Dependencies are inferred from the claim text.