Wireless distance measuring system based on 51 SCM

A wireless distance measuring system based on 51 single-chip micro-computer is designed in this paper.Using 90C52RC and 12C5604AD from STC as the controllers of main control terminal and measuring terminal respectively and the ultrasonic sensor as detector,the system completes real-time distance measurement.The high speed wireless data transmission is achieved by making use of nRF24L01.The system includes two parts--main control terminal and measuring terminal.The main control terminal controls the measuring terminal through key-press,and displays the real-time data on nixie light.This system also has a distance setting function,by which the measured data exceeding the setting value can start up the acousticoptic alarm.The system can be used in industrial data collection,wireless meter reading,environmental monitoring and other fields.