基于单片机超声波测距系统的电路设计与实现.PDF

ELECTRONICS WORLD 技术交流 ・ 基于单片机超声波测距系统的电路设计与实现 厦门惠尔洁卫浴科技有限公司 杨 斌 郑翔骥 湄洲湾职业技术学院 佘明辉 【摘要】 文章采用以8051单片机为核心的数字显示超声波测距的硬件电路和软件设计方法来实现功能。本系统由微处 理器8051控制超声波传感器发射超声波，当超声波信号碰到障碍物时信号立刻返回，通过超声波传感器接收返回信 号，送入单片机8051处理换算就可以得出超声波传感器所测得的距离并送入LED显示器显示出来。整个电路采用模块化 设计，文中对主程序、预置子程序、发射子程序、接收子程序、显示子程序等模块设计与实现进行了较详细地阐述。 【关键词】 单片机；超声波；测距系统；自动化 Design and implementation of ultrasonic ranging system based on single-chip microcomputer 1 1 2 YANG-bin ,ZHENG Xiang-ji , SHE Ming-hui (1.Xiamen Huier bathroom Technology Co., Ltd.Xiamen 363105,China; 2. Department of automation engineering, Meizhouwan Vocational College, Putian 351254, China) Abstract: This paper adopts software design method and the digital hardware circuit with 8051 single slices of machine as core that shows supersonic range finding to realize function. The system consists of a microprocessor controlled ultrasonic sensor to transmit ultrasonic 8051, When the ultrasonic signal when encountering an obstacle signal return immediately, The ultrasonic sensor receivesa return signal, Send into 8051 only flat machine handlings conversion can reach supersonic sensor the distance that measured and send into LED display show. The circuit uses modular design, In writing for main program put subprogram in advance , project subprogram, take over subprogram, show realization and the modular designs such as subprogram have gone on elaborate comparatively in detail. Key words: SCM;ultrasonic; ranging system; automation 声波发射器、超声波接收器、LED显示器、电源电路等五 引言 大部分组成。单片机控制器(微处理器8