Automatically switched vehicle parking light - has light sensitive semiconductor element or phototransistor and is microprocessor controlled

摘要

Two light sensors are mounted on the vehicle, which, sensing the approach of other vehicles by the intensity of their lights falling on the vehicle evaluated by an electronic circuit, switch on a parking light on the vehicle. One sensor operates for each end of the vehicle. The sensor is a light sensitive semiconductor element or a phototransistor. The device is microprocessor . controlled and an analogue to digital converter is provided for the measured signal. ADVANTAGE - Parking light operates only when needed rather than continuously.