【摘要】 利用超声波测距原理,出于低成本、高精度的目的,提出了一种基于AT89S52的超声波倒车雷达系统的设计方案。硬件部分采用AT89S52单片机作为控制器,主要有超声波发射电路、超声波接收电路、温度检测电路、LCD显示电路和报警电路。本文在分析超声波测距原理的基础上,给出了实现超声波倒车雷达系统的软件设计流程图和硬件设计电路图。该系统测量精度为1cm,完全能够满足汽车倒车系统的设计要求。更多还原

【Abstract】 Aiming at low cost and high precision,and based on the principle of ultrasonic ranging,an ultrasonic ranging radar system based on AT89S52 is designed.The hardware adopts AT89S52 MCU as controller,and the system is composed of ultrasonic transmitter circuit,ultrasonic receiver circuit,temperature detection circuit,LCD display circuit,and alarm circuit.Based on the analysis of the basis of principle of ultrasonic ranging,this article gives the software design flow chart and hardware circuit diagrams for realizing ultrasonic ranging radar system.The measurement accuracy of the system is 1cm,is fully able to meet the design requirements of vehicle collision avoidance system.更多还原