基于RS 485单片机多机串行通信的电子开关设计  

Design of electronic switch for multiple MCUs serial communication based on RS 485

作　　者：周杰 郝丽娜[2] 李帅[2] 李智[2] 

机构地区：[1]宽城满族自治县冶金建材工业公司,河北承德067600 [2]东北大学机械学院,辽宁沈阳110819

出　　处：《现代电子技术》2012年第3期177-181,共5页Modern Electronics Technique

基　　金：国家高技术研究发展计划(2008AA04Z305);国家自然科学基金项目(51075066);国家机器人重点实验室(RL0200903)

摘　　要：针对大中型传送带传送过程中位置跑偏的检测,设计了基于RS 485单片机多机串行通信的电子开关。介绍了该电子开关的总体方案及硬件电路设计,该电子开关采用RS 485通信,不仅抗干扰能力好,并能够实现长距离通信且可以避免多个从机同时与主机通信时产生数据冲突的问题。实验表明,该电子开关结构简单、性能稳定,可应用于工业控制、检测等领域中。In order to test the position of the large or medium-sized conveyor belt in transmission process, the electronic switch for multiple MCUs serial communication based on RS 485 was designed. The overall scheme and the hardware circuit are mainly introduced. The electronic switch based on RS485 communication has better anti-interference ability, realizes the long distance communication and avoids the data communication conflict when multiple slaves communicate with the master at the same time. Experiment indicates that the electronic switch has simply structure and powerful stability and can be used in industrial control, testing and other fields.

关 键 词：RS 485 单片机 串行通信 电子开关 

分 类 号：TN919-34[电子电信—通信与信息系统]