单片机控制的超声波测距仪的设计

Design of Ultrasonic Rangefinder Controlled by Single Chip Microcomputer

根据单片机控制超声波测距仪汽车倒车系统的工作原理,利用单片机调用超声波测距模块HC-SR04发射并接收超声波,温度传感器DS18B20对温度进行检测,补偿温度对超声波速度的影响,结合外围电路模块实现距离、温度的显示及报警,在系统硬件设计基础上,对系统软件进行了设计。

This paper is based on the working principle of the ultrasonic range finder of car reversing system controlled by single - chip microcomputer. It uses the single - chipped ultrasonic ranging module HC - SR04 in order to transmit and receive ultrasonic and detects temperature through the DSI8B20 temperature sensor so as to compensate the influence of temperature on ultrasonic speed. Combining with the peripheral circuit module, this paper realizes the display and alarm of temperature and distance. On the basis of the system hardware design, the system software is designed.