本源程序为超声波测距程序，利用超声波模块进行距离探测，利用温度补偿，液晶显示距离探测值，进行距离分段控制，适合做与距离相关的项目参考(Source program for Ultrasonic Ranging procedures, the use of ultrasonic modules for distance detection, the use of temperature compensation, liquid crystal display range detection value, distance control, suitable for distance related projects)