The Monitoring And Control System Of YinZhuJiXing Water Works

The monitoring and control system plays an important role in the industrial control fields, which can provide the system with higher reliability and higher stability. The monitoring and control system involves a lot of scientific fields. Because of the system's complexity , The monitoring and control system is the important research task in domestic automatization fields at all times.The computer control technology and the computer network technology are applied to the monitoring ^ control and management of water works, which can be propitious to improving the level of the monitoring and control system of the water works and improving the water works reliability ,which has the practical significance. In the recent few years , the domestic water works and the hydropower plants introduce the monitoring and control system, which has improved the whole level of the water conservation's serving the society.The water hammer and the water hammer's control measures are the important research task of the field of the water works and the water works automatization .The water hammer does great harm to the pipeline, and especially breaks the pipe. Researching the water power's transitional process may improve the water works' security and reduce the investment by controlling the water hammer's harm and providing the effective defensive measures.This paper is from the Yinzhujixing water works. In order to meet the demand of the water power control and automation management, the monitoring and control system is introduced. The paper includes two aspects. In the monitoring and control aspect, we establish the layered and distributed architecture of the computer network based on the pattern of DCS by the configure software, and developed the communication software among the multi-stations and between the instruments and the PC. In the water works control aspect, modifying the valve by the effective algorithm can lighten the pipe's pressure in order to resolve the water hammer defensive problem.This paper's main task include:In the aspect of the network communication and database application, To satisfy the demands of the works, the software of sustaining DDE is worked out , which realizes the DDE with the configure software, so the problem that the instruments' protocols do not match to the configure software's is solved; we work out the software of collecting datum information from the instruments on the RS-485 bus; the software of transferring information by the telephony network is worked out, and the software of alarm by beep-pager is work out too ; the software of database report with the performance of supporting COM, by which the engineers can visit the field database everywhere in the world ; the software that the two servers are redundant mutually is developed; some ladder program of PLC is developed and the MegaBasic software is developed which collects datum information from the instruments on the RS-485 bus.In the aspect of the water works, this paper involves the emulation of the valve control, and the emulation of the partial differential equation of the water hammer models.Aiming to the practical problem of the Yinzhujixing works, a lot of software developments and hardware experiments have been done. A satisfying result is obtained . The tasks above offer a lot of practical experiences by which the works can carry on smoothly.