Automatical wiper control system circuit diagram

Published:2011/5/9 20:48:00 Author:Nicole | Keyword: aAutomatical wiper, control system | From:SeekIC

It is a automatical wiper control system circuit diagram, when the rain drops to sensor, its internal will produce voltage(A point) change which changes in relation to the rain intensity and frequency(in piezoelectric element, the voltage waveform is proportional to the rain drop energy), this voltage waveform is amplified by sensor internal amplifier circuit(B point), it is stored in power amplifier charge circuit. When the voltage singal of storing charge circuit reaches a definite value(V0), it is imported into wiper dirve circuit by comparing circuit, then the wiper starts to work. The interval time(T) is proportional to the speed 14 of charge circuit voltage, so the wiper's energy is higher, the car speed is quicker, so the time is shorter; on the contrary, the time is longer.



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