摘要
介绍了一种以AT89C51单片机为主控芯片,基于超声波测距原理,能实现倒车防撞报警功能的系统,并提出了系统硬件和软件的设计方法。各功能电路采用集成芯片,减小了信号的相互干扰,提高了精度。该系统的最大测距误差不超过1cm,测距范围为10cm～300cm,满足了倒车雷达的要求。
Employing the principle of ultrasonic distance measurement, this paper introduces a system which uses AT89C51 as a master chip to realize a reverse collision avoidance alarm system, and proposes the method of designing the system hardware and software. Integrated chips are used in each functional circuit, reducing interference between the signals and improving accuracy. The ranging error of this system ranges from 10 cm--300 cm, while its maximum ranging error is less than 1 cm, which meets the requirements of reversing radars.
出处
《机械工程与自动化》
2011年第6期121-123,共3页
Mechanical Engineering & Automation
关键词
单片机
超声波
防撞系统
倒车
MCU
ultrasonic
collision avoidance system
reversing
