The Design And Realization Of Fieldbus Control System For Boiler

The control technology has changed from distributed control system(DCS) to fieldbus control system(FCS) now and will be replaced by the latter. The core of FCS is fieldbus, and the technology of fieldbus is the synthesis and the integration of the computer technology, the communication technology, control technology, The fieldbus brought profound transformation. For the characteristics of full-digital, full-dispersive, full-opening, the fieldbus control technology i s becoming the main of auto-control. As one of the standard of fieldbus, CAN has been regarded as one of the most promising fieldbus for its high-powered, high-reliability and particular design, and has been used in more and more fields. SHCAN2000 control system is based on the CAN, which adapts to medium-small-sized system, and being extended and used broadly, has provided a new way for our enterprises' production equipment.As one of important devices that transformed the crude resource into quadric resource, the boiler's working status affects the using rate of resource directly. At present, the boiler running is controlled by hand in most enterprises of our country with uncultured technology, low using rate of resource, high working intensity, bad working condition. It is necessary that design a safe, reliable, efficient control system for exerting resource virtue, proving the development of national economy.This paper puts forward a fieldbus control system project in allusion to two 20t/h heating boilers. This paper discusses software and hardware construction of boiler SHCAN2000fieldbus, the design and realization of software and hardware inthe course of practical application. Integrating boiler control computer reconstructing, the paper presents the solution of adopting SHCAN2000 system to realize auto control, including loop auto control, test data auto-collection, friendly human-machine interface, test reports auto building, etc. The function configuration realization of operation station and field control unit is discussed in this paper.This control system has successfully applied in Jinyuan area at Dalian development zone. The system has strong function, good control effect, and generalize application value. This proves the scheme design properly and practically, which realizes boiler control by FCS. This paper makes valuable attempt for field-bus' further application on industry control field.