Abstract
The purpose of this paper is to propose a design of an automobile driver-assistance system. It uses the STC12C5A60S2 as its main controller, and the HC-SR04 as its ultrasonic ranging. Then, the sensor DHT11 is responsible for the external temperature and humidity measurement as well as the velocity correction. These help to improve the precision of the ultrasonic measurement. Through the combination of the vehicle distance detecting and the photo resistance monitoring the external illuminance, we can realize the vehicle-headlights intelligent switching. LCD12864 is an information display combining all the information such as temperature, humidity, vehicle distance and so on, and finally conduct the collision warning via the buzzer. The experimental results show that the system designed has advantages of reliable operation, simple structure, low price and double functions as the collision warning and the vehicle-headlights intelligent switching, which ensures it a good application prospect.
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