The Design And Implementation OF Process Control Functions Of DCS

As a new type of control system based on PLC and developed with the continuous rise of modern large-scale industrial production automation in the mid-1970s, DCS is an integrated control system designed to meet the increasingly complex control requirements. For the present DCS develops into the main equipment of industrial process control, creates the conditions for improving the safety and smooth operation of industrial production, and plays an important role in improving the process operation, control and production management level.DCS, closely dependent on the automatic control technology, computer technology, communication technology and CRT display technology, achieves the centralized monitoring and management of production process, and avoids the problems of single function, scattered layout and highly centralized danger of computer control system in the conventional instrument.DCS improves the control precision of industrial production process, and reduces the costs of maintenance and operation.With the development of computer and communication technology, DCS is not confined to a control system with the purpose of mere process control functions any more, but rather an integrated platform for information management functions. System developers don’t see the development of configuration software or manufacture of various hardware units as the core technology any more, but rather use a third-party integration method to develop functions to meet the demands of users together. Based on that, DCS develops continuously towards informatization and integration.Beginning with monitoring needs of chemical production process, this paper uses seven chapters to state the key technologies, performance requirements, software and hardware design of DCS system in detail, and preliminarily discusses the realization of system functions through the combination of examples and automation control technology, and finally based on the actual work experience, introduces the system testing and maintenance.