Design Of A New Kind Of Computer Control System Applied To Enamel Machine

After China entrying the WTO, in great demand of enameled wire makes our enameled wire production business expansion. As a traditional industry, it is still playing a larger support role for economic development because of its value, the large profits and providing a large number of jobs.But in production process of enameled wire, it consumes a lot of electric energy, organic solvent volatilized from paint cause air pollution. As upstream industries of enameled wire business, technology innovation and technological innovation investment in energy conservation and environmental protection of enamelling machine will directly affect the downstream enamel-insulated wire production situation and degree of environment pollution caused by unit of energy production. Facing the increasingly nervous energy and the unceasingly pollution of ecological environment, National policies and encourage measures issued timely, and actively guide energy-intensive industry to energy conservation and environmental protection high pollution. In summing up experience of enameled wire production and after reforming practice of oven, in recent years, enamelling machine, whose operation process cause high pollution and consume a lot of energy,its structure has been greatly improved. But the equipped with, the electrical control system,as the control core of enamelling machine is not timely follow-up, is still widespread adoption of routine instrument and relay control mode with simple structure, convenient maintenance, such separated electrical control mode with low precision of controlling not only become the restriction factor of enamelling machine further improvement of energy conservation and environmental protection, but also it cannot provide satisfactory mandatory index of enameled wire production.Meanwhile, because it does not provide information interaction interface, it makes the enterprise management isolated from production site information, which cause the upper management cannot monitor status of equipment and production results real-time, a operator cannot timely implement production instruction and feedback production information situation. Therefore, design a new kind of control system which controls accurately, have positive contributions to energy consumption and environmental protection, convenient to management of modern enterprise, it will have great economic value and application prospect. This paper discusses and compares the control system of enamelling machine, the domestic and foreign research on electric control system, proposes a new kind of design about electric control system based on a single board computer after analyzing actual application requirements of enamelling machine.In the aspects of the real time monitor and superior, it will collects datas of 6 monitoring temperature,40 spooler state,7 motor speed,1 electricity measurement information, follow the MODBUS RTU protocol and DLT645-1997 standards agreement,it makes operation control and acquisition concentrated, the method can guarantee collection of data real-time and accuracy, meanwhile, this design realizes the linkage control, according to the mechanism of equipment operation,when one of points appears unusual,, there will be a chain reaction, or controls related motor speed, or opens valve, make the monitoring state restored more rapidly and effectively.Method of temperature control, this design gives up the traditional PID control,and adopts fuzzy PID control mode which is more robustness, more precisely, higher anti-jamming, makes monitoring temperature control improved greatly. Remote management in enterprise, the main controller in this system is configured to a simple WEB server, using design patterns of browser/server (B/S) program which is in common usage in the network, it will transfer web pages which embeds datas of field to remote users,it realizes data real-time monitoring, while saving a lot of resources. On the aspect of anti-interference ability, propose protective ways in two aspect of hardware and software, ensure system run statable and minimizes effect of interference and internal disturbance.The design of the system has been installed in a enamelling machine, it has been operated stablely for one month.Compared with production of the same specification enameled wire, power consumption reduce 5% per unit time than before. Monitoring temperature fluctuations range reduce from±10℃to±3℃, basically reached the design goal. According to the reaction of operators, the system has a good human-machine interface, which makes the operation more easily. Because the system has the function of linkage control, it liberated operation staff occasionally from staring at equipment instrument and export of oven, make them focus on technology with more time and effort.Overall, this system have enough ability of running steadily in the field, and meet the demand of the enameled wire production while reducing energy consumption.