Research Of Integration System Of Information And Control Based On FCS

The occurrence and development of the field bus lead to a revolution in the area of industrial control. Featured by full-digitalization, full-dispersal and full-openness, field bus is now a "hot spot" because it adapts to the development trend for industrial control area of dispersal, network and intelligence. Based on the fact that, leading in the area, monitoring systems integrated by field bus information is gradually superseding conventional control systems, it produced substantially both social and economical benefits. It is urgent and important to turn research achievements into practical applications, realizing a transformation from "industrial economy" into"information economy", especially when new technological reformation and product generation upgrading occurred in China. The study in this paper is conducted on such an industrial and technological background.Productive process control has been a difficult problem for a long time. Characterized by long reaction process, by combustible, by strict interlock conditions, by heavy control duties, by high control flexibility, by flexible control strategy, by concurrence of various control modes, and by equally highlight switch on/off control & analog control etc.. higher requirements are imposed on the control system. In addition, larger scale of industrial control field and more relevant equipment, such as sensors, performers and actuators, which are distributed in a wide area, required in productive processes. Therefore it is crucial, for information integration of monitoring system, to strengthen the state control of field-used equipment and the field data acquisition, processing and transmission. This is of universal significance to the whole industrial field control, thus the data acquisition for field bus and application of the control system providing a new scheme for resolving problems of this kind.There is a practical application projects: s "fluid quantity data acquisition and administration system in Benxi Steel & Iron Group"(widelydistributed, more data acquisition points, being able to automatically supervise network faults); the other is "monitoring system for activation stove t "(typically general intermittence control, strict interlock conditions and heavy control duties), project featured by modern industrial development, ie. Network, dispersal and intelligence. Combining the characteristics of the above projects, a research topic is selected based on the application of data acquisition and control system to focus on the realization of integration information administration with control. The advantages are demonstrated for the realization of chemical engineering process control using field bus control system and for the data acquisition monitoring network based on enterprise workshop INTRANET. Adopting the SHCAN2000 field bus control system in designing and realizing data acquisition and monitoring system, its feasibility is elucidated for the application of the scheme to field environments. It is intensively dealt with the frame structure of the SHCAN2000, the hardware and software design in the application of the system and how to realize system functions through computer programming and off-computer configuration.On the basis of field bus, the data acquisition and control system designed in this study has successfully been put into use in Benxi Steel & Iron Group and Yinkou Xiangyang Chemical Plant. It is of high value to be widely used in industrial control practice due to its powerful functions, good control effects and high intelligence. It is proved that the scheme presented is reasonable and practical and is a beneficial attempt for further application of field control to the area of industrial control.