Application of Ultrasonic Sensors in the Vehicle Collision Avoidance and Early Warning System

Abstract

In order to improve the vehicle safety performance, the ultrasonic range finder is applied to the development of an automatic brake system. In a low-speed driving or reversing motion, the ultrasonic sensors can detect whether there are obstacles at front or back of the vehicle, optimize the ranging algorithm and build up a collision avoidance model. The temperature sensor can be used to measure the ambient temperature in real-time manner, correct the ultrasonic ranging result, display the distance between vehicle and obstacle and warn of the driver, and in case of emergency, automatically control the vehicle to start the emergency brake device. The ultrasonic collision avoidance and early warning system based on the microcontroller can help the driver have a good knowledge of the surrounding conditions of the vehicle and thus being of great significance for ensuring driving safety.