基于OPC和Profibus-DP总线的远程控制

针对远程控制系统难以实现和控制效果不理想的问题,提出了一种基于OPC(OLEfor Process Control)和Profibus-DP总线的远程控制实现方法。建立了以太网和Profibus-DP现场总线两层网络的双水箱液位控制装置实验平台,给出了基于OPC和Profibus-DP总线的远程控制系统框图和控制原理。系统通过Profibus-DP总线实现现场设备的数据实时采集,并传递给SI-MATIC NETOPC服务器,客户端MCGS获取OPC服务器的实时数据,利用Matlab实现BP神经网络优化PID控制参数,优化后的参数通过SIMATIC NET OPC服务器传递给Profibus-DP总线控制系统,实现远程控制。实验结果表明,提出的远程控制方法有效,具有较好的控制效果。

Remote Control Based on OPC and Profibus-DP Bus

To the problem that remote control system is difficult to realize and control effect is unsatisfactory,a remote control system realization method based on OPC and Profibus-DP Bus is proposed.With Ethernet and Profibus-DP Bus,an double-holding liquid level container experimental platform of two network layers is built and a remote control system diagram and control principle based on OPC and Profibus-DP Bus are given out.The system get the process devices data through Profibus-DP Bus and transmits them to SIMATIC NET OPC server.The client MCGS gets the real-time data from OPC server and realizes the BP neural network PID controller parameters optimization using Matlab.The optimized parameters are transmitted through SIMATIC NET OPC server to Profibus-DP Bus control system to realize remote control.The experimental results show that the proposed remote control method is effective and has a good control effect.