The System To Monitor And Control Pump Station By Means Of IPC And PLC On The Basis Of Distributed Control System

The paper emphasize on the system to monitor and control pump station by means of IPC and PLC on the basis of distributed control system. The core and charictaristics of DCS is distributed control and centralized adminstration. The whole system is divided into four layers:equipment layer,process control layer,administrative layer etc. The different layers is connected by communication protocols. It is no doubt that the communication protocols are playing key role in the control systemThe paper look insight into such widely- used communication protocols as PPI, FREEPORT, MPI and PROFIBUS, especially hardware configuration and software configuration. The resercher on them has meaning as follows:By means of these communication protocols,we can use digital signals instead of analogue signals as soon as possible.It is possible to communication between PLC, IPC, Intelligent equipment and censor.The paper sticks to open-minded design method which means that both hardware configuration and software configuration are carried out in the forms of modules. The basic configuration is decided by consumer demands. The different protocols are realized by addition and decrease of modules. During design, I not only pay more attemtion to the current demand, but also to the development in the future.The control of the electrical valves are elaborated in the paper. The advanced technology of numerical control is also applied to it. Meanwhile, I take some special measures to cope with malfunction frequently happening on those electrical valves.By the end of the paper, the realization of Industrial Ethernet is also heartedly discussedThe system has been put to use in the year 2003 and contributed a lot to the improvement of administration and promotion of the rate of proper run.