The Research And Developing Of Wastewater Treatment Control System Based On LONWORKS

With the improvement of industrialization rhythms and urbanization levels, water pollution has become one of the major problems universally. It is an economical and efficient way to use automation control of Waste Water Treatment Process.LonWorks network control technology is a new-style fieldbus technology. LON bus which is a kind of the most popular fieldbus has been used in building, traffic, energy sources and so on. LonWorks technology gathers computer, network and control, integrates LonTalk protocol with all seven layers of ISO/OSI, and realizes communication and control functions, being flexible in grouping and good at opening.This thesis is based on the reconstruction of automotive supervision and control systems in Yibing Huimei Waste Water Treatment Plant. According to the practical requirements, the LonWorks network control system to Waste Water Treatment Plant is proposed.First of all, the paper discusses the design clue and hardware circuit and software design of Aerobic part of Intelligent Node, which based on PL3150 Power Line Smart Transceiver and some accessorial circuitry is designed. Secondly, compared with several kinds of control strategies, a new Fuzzy+PID control strategy is proposed. In addition, the man-machine conversation of the central monitoring system is programmed by King View6.5.The establishment of high level automation on sewage treatment plant, not only may strengthen the system's reliability, accuracy, but also may reduce the labor intensity and the processing cost and save the energy. The sewage treatment plant automatic control system will reduce the cost of production and maintenance and will provide the convenience for the further improvement of production craft. It can receive the good economical and social benefit.