根据超声波检测来避免小车与障碍的碰撞 -According to the ultrasonic detection to avoid the car with the obstacle of the collision

通过超声波测距控制汽车电机速度避免碰撞，内含程序源文件及Proteus仿真文件。(Through ultrasonic ranging control vehicle motor speed to avoid collision, including program source files and Proteus simulation files.)