嵌入式远程测控终端与PLC通信的研究

Research on the Communication Between PLC and Remote Monitor Based on Embedded System

基于μClinux的多线程机制完成了一套中央空调远程测控终端系统,分析了嵌入式系统PLC的通信过程。通过在嵌入式处理器芯片上扩展网络接口将PLC连接到Internet,打破了PLC经由串口直接连接Internet的速率瓶颈,为实现分布式实时远程监控系统提供了一种高速率的解决方法。

Based on the μClinux＇s multi-thread mechanism,a center air-conditioner monitor system is successfully established.The communication between embedded system and PLC is analyzed.One network Interface is extended from the embedded processor in order to connect the PLC into the internet.The communicating rate has been greatly promoted,and this technique can be used into the implementation of the high-rate distributed real-time remote monitor system.