一种新型远程抄表系统的通信协议研究

针对户用计量仪表的远程集中抄表问题,设计了基于CAN/RS485双层网络结构的抄表系统,并对远程抄表技术通信过程中的数据可靠性低的问题,提出了一种握手联络式串口通信协议,根据远程抄表系统的通信特点设计了集中控制器与用户信息采集器、管理中心计算机与集中控制器之间的通信协议,得出了其软件实现框图。还对设计系统进行了反复测试,测试结果表明系统运行平稳,符合设计要求。

Study on Communication Protocol of a New Kind Remote Reading Meter System

Aiming at the existing problems of the remote concentrated reading meter,a double-layer network of remote reading meter based on CAN/RS485 is designed.According to its stability feature,a handshaking serial communication protocol is also introduced.Then,it designs picture in view of the character of remote reading meter's communication protocol and the remote reading meter system software among the user measure meter,the concentrated reading meter system,the center management computer.The practical test shows that this system has the characters of high stability,which can meet the design requirement.