利用单片机（51系列）控制超声波模块，实现测距的动能，有盲区，但是通过调整程序可以提高精度。经过本人调试，程序可用并可实现测距功能-Microchip (51) control ultrasonic module, the kinetic energy ranging, there are blind spots, but the accuracy can be improved through the adjustment process. After I debug, the program can be used to achieve distance function