这是一份有关传感器的课程设计。课题是基于红外传感器的火车时速的检测。红外传感器检测到信号，传给单片机，单片机数据处理，并作出液晶显示，同时通过穿扩通信传给PC，可以用串口精灵在远端实时检测-This is a curriculum design of the sensor. The issue is the train speed of the infrared sensor-based detection. Infrared sensors to detect a signal is pass