With the rapid development of information technology, DCS systems are widely used in coal, electricity, chemical and other industrial fields, and gradually change from the original supporting role to the protagonist position of determining the safe and economic operation of various industrial enterprises. Through various practices, the application of the distributed control system has greatly reduced the work intensity of the staff and improved the work efficiency. Distributed Control System (DCS) is a microprocessor-based decentralized integrated control system. The DCS system integrates computer technology, network communication technology, automatic control technology, redundancy and self-diagnosis technology. The structure, which is suitable for the control and management needs of modern production, has become the mainstream system of industrial process control. The distributed control system integrates the computer, instrument and electronic control technology, combined with the corresponding software, can realize the functions of automatic data collection, processing, process picture display, parameter over limit alarm, equipment failure alarm and report printing, etc. The parameters form a historical trend record, which can be viewed at any time and set a safe operation level, which is convenient for management and makes the system run safer and more reliable. At present, the DCS distributed control system has certain fields in various industries. Maybe someone really doesn't know how good the DCS distribution system is? Where is it? What are the characteristics? Today, Xiaobian wants everyone to introduce the characteristics of DCS. Its main features are control dispersion and centralized management. The basic idea is: decentralized control, centralized operation, hierarchical management, flexible configuration, and convenient configuration. The biggest characteristic of DCS in control is that it relies on the flexible configuration of various control and arithmetic modules, which can realize diversified control strategies to meet the needs of different situations, making the propositions in the unit combination instrument quite cumbersome and complicated to become simple. With the high flexibility and high efficiency requirements of enterprise reform, the control scheme based on classical control theory can no longer be adapted. After the advanced control strategy represented by multivariable predictive control is put forward and successfully applied, advanced process control is affected by the process. General concern in the industry. It should be emphasized that the extensive application of various advanced control and optimization technologies is the most effective, direct and most valuable development direction for mining and improving the overall performance of DCS. The development of instrument technology into the intelligent, networked development of industrial control equipment in the direction of digitalization, intelligence, and networking can promote the process of process control to be further dispersed and achieve "all-digital" and "fully dispersed" control in the true sense. In addition, because these smart meters have high precision, good repeatability, high reliability, and two-way communication and self-diagnosis functions, the installation, use and maintenance of the system is more convenient. Other features are: 1. I/O bus technology based on fieldbus idea 2, advanced redundancy technology, hot plugging technology po 3, complete I / O signal processing 4, based on the client / server application structure 5, Windows NT platform, Ethernet, TCP / IP protocol 6, OPC server provides interconnection 7, Web browser style, AcTIveX control support 8, ODBC, OLE technology, information, resource sharing
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March 15, 2023