可视化车辆倒行危险状况报警系统的设计

Visualization vehicle to do the Reverse the Dangerous Conditions Alarm System Design

针对倒车过程中视野受限而无法有效观察车后部障碍物危险的问题,设计的一种基于嵌入式处理器的可视化车辆倒行危险状况报警系统;设计通过压电式超声波发生系统发送超声波信号,传感器接收到从障碍物反射回来的电信号并送入处理器,通过计算信号的传播速度从而得出雷达探头到车后部障碍物之间的距离,并通过车内的TFT彩色液晶屏显示出实测距离,同时根据距离的远近发出节奏不同的报警声音;通过实验测试,系统在常温状态下,测量误差小于0.05m。

According to the back--draft process view and not effective limited observation car back the dangers of obstacles, the design of a visualization of based on embedded processor vehicle to do the reverse the dangerous conditions alarm system. This design through the piezoelectric type ultrasonic happen system to transmit ultrasonic signal, sensor to receive the reflected signals from obstacles and into the processor, through the calculation of the signal transmission speed and get the car back to the radar probe the distance between the obstacles, and through the car, the TFT color LCD shows the actual distance, at the same time, according to the distance a rhythm of different alarm sound. Through the experiment test, This system in normal state, the measurement error is less than 0. 05 meters.