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RAIN DROP SENSOR AND RAIN-DROP MEASURING DEVICE USING THE SENSOR AS WELL AS WIPER DRIVING DEVICE USING THE MEASURING DEVICE
RAIN DROP SENSOR AND RAIN-DROP MEASURING DEVICE USING THE SENSOR AS WELL AS WIPER DRIVING DEVICE USING THE MEASURING DEVICE
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机译:使用该传感器的雨滴传感器和雨滴测量装置以及使用该测量装置的雨刮驱动装置
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摘要
PURPOSE: To detect rain drops simply and accurately. ;CONSTITUTION: A light-emitting section 5 and a light-receiving section 6 are disposed oppositely on the boundary section of the bonnet 1 and windshield 2 of an automobile. The light-emitting section 5 receives a synchronizing signal from an amplifier unit 3 stored in a car body and intermittently projects band- shaped light 8, and the quantity of light received, which is obtained by the light-receiving section 6, is output to a control section 4 through the amplifier unit 3. When a rain drop passes between the light-emitting section 5 and the light-receiving section 6, band-shaped light 8 is shielded and the rate of light reception is deteriorated, the rain drop is detected. The controller 4 measures the quantity of the rain drops from the result of the detection, and outputs a wiper driving signal and drives a wiper 7 when the result of the measurement reaches a fixed threshold.;COPYRIGHT: (C)1996,JPO
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