单片机汽车倒车测距仪

单片机汽车倒车测距仪 学号： 班级： 姓名： 摘 要本设计是一种基于 AT89C52 单片机的超声波测距系统，由单片机模块、超声波模块、液晶显示模块等组成。本设计利用一片单片机对超声波信号循环不断地进行采集，能测量出倒车方向的障碍物与汽车之间的距离，并通过 LCD 显示模块显示两者之间的距离，然后通过蜂鸣器发出不同频率的声响，从而起到提示和报警的作用。关键词：单片机 超声波 液晶显示 信号 AbstractThis design is a kind of ultrasonic ranging system based on AT89C52 MCU,MCU, ultrasonic module by module, LCD module. This design using a single chipon the ultrasonic signal continuously collected, can measure between the obstacle and the car reversing the direction of the distance, and through the LCDdisplay module to display the distance between the two, and then through the buzzer sounds of different frequencies and different colors of the LED light out,thus plays the role of tips and alarm.Keywords: single chip ultrasonic liquid crystal display signal 目 录1方案设计..............................................................................................................................- 1 -1.1主控模块选择..........................................................................................- 1 -1.2超声波模块..............................................................................................- 1 -1.3液晶显示模块..........................................................................................- 2 -1.4提示报警模块..........................................................................................- 2 -2 结束语3参考文献..............................................................................................................................- 4 -4 附件 1 方案设计1.1主控模块选择单片机控制模块在本系统中处于核心地位，其工作包括号的采集，进行数据处理，控制执行机构的运行等。对单片机控制模块的基本要求是具有较高的速度且资源配置满足要求。AT89C52 是一个...