基于单片机的超声波测距报警系统的设计与仿真

Design and simulation of ultrasonic distance measurement and alarm system based on single chip microcomputer

分析了超声波测距原理的基础上,设计了基于单片机的超声波测距报警系统,该系统可分为硬件设计和软件设计.系统基于AT89C51单片机可实时测量车辆与障碍物之间的距离,通过数码管电路显示,按键电路设置安全距离,实测距离小于安全距离时,显示电路实时显示并由报警电路发出报警。软件设计利用C语言进行编程。通过proteus软件对电路进行了仿真。该系统电路设计合理,运行稳定,工作性能好,响应速度快,通过计算实时显示测量数据,具有一定的测量精度可以满足工业需求。

Analysis of the ultrasonic ranging principle,the design of the alarm system based on MCU ultrasonic ranging,includes hardware design and software design.The system can be used AT89 C51 SCM system between real-time vehicle and obstacle distance based,through the digital tube display circuit key circuit,set the safety distance,the measured distance is less than the safe distance.Display circuit and display circuit alarm alarm issued by.Software design is programmed in C language.The circuit is simulated by proteus software.The system has reasonable circuit design,stable operation,good working performance and fast response speed.By measuring the measured data in real time,it has certain measurement accuracy and can meet the industrial needs.