| 摘要 |
PROBLEM TO BE SOLVED: To provide a raindrop sensing type windshield wiper system for improving wiring structure between a multi-functional switch (20) and a rain sensor module (10) to reduce weight and cost of a wiring harness, wherein the sensitivity of the rain sensor module (10) is adjusted only by a resistance value of an intermittent volume of the multifunctional switch (20), which is not influenced by fluctuation of a battery voltage generated in the inside of a vehicle. SOLUTION: The raindrop sensing type windshield wiper system comprises wiper motors, low and high speed relays for driving them respectively at a low or high speed, the multifunctional switch (20) for outputting a wiper operation signal by operation of a user, and the rain sensor module (10) for sensing the quantity of rainwater when an automatic signal is input therefrom and for operating the low and/or high speed relay according to the sensed quantity of the rainwater. The rain sensor module (10) has a first voltage sensing means for sensing the battery voltage, a second voltage sensing means for sensing a voltage of the automatic signal, and a micro computer for adjusting the sensitivity of the rain sensor module (10) based on the ratio of both voltages. COPYRIGHT: (C)2005,JPO&NCIPI
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