What is a DCS system? What is DCS?

DCS is the English abbreviation of distributed control system, which is also called distributed control system in the domestic automatic control industry.

That is, the so-called distributed control system, or in some data called distributed system, is a new type of computer control system relative to the centralized control system, which is developed and evolved on the basis of the centralized control system. It is a multi-level computer system composed of process control level and process monitoring level with communication network as the link, integrating computer, communication, display and control and other 4C technologies, and its basic idea is decentralized control, centralized operation, hierarchical management, flexible configuration and convenient configuration. In terms of system functions, DCS and centralized control systems are not very different, but they are completely different in the way system functions are implemented.

The main function of the engineer station is to provide the DCS configuration, configuration work and system supervision, control and maintenance of the network node, its main function is to provide the DCS configuration, configuration work tool software (i.e., configuration software), and in the DCS ** operation real-time monitoring of the operation of each node on the DCS network, so that the system engineer can adjust the system configuration and some system parameters through the engineer station in time, so that the DCS is in the best working condition at any time. Unlike centralized control systems, all DCSs require system configuration capabilities

Centralized display, decentralized control.

Distributed control systems.

DCS is the English abbreviation of distributed control system, which is also called distributed control system in the domestic automatic control industry. It is a new type of computer control system relative to the centralized control system, which is developed and evolved on the basis of the centralized control system.

The distributed control system is a new generation of instrument control system based on microprocessor, which adopts the design principles of decentralized control function, centralized display operation, autonomy and comprehensive coordination. Distributed control system is referred to as DCS, which can also be literally translated as "distributed control system" or "distributed computer control system". It adopts the basic design idea of decentralized control, centralized operation and management, and adopts a multi-level hierarchical, cooperative and autonomous structural form.

Its main feature is its centralized management and decentralized control. At present, DCS has been widely used in various industries such as electric power, metallurgy, and petrochemical.

Definition: DCS system (distributed control system, distributed control system) is with the continuous rise of modern large-scale industrial production automation and the increasingly complex process control requirements of the integrated control system, it is the product of computer technology, system control technology, network communication technology and multi-technology combination, can provide window-friendly man-machine interface and powerful communication functions.

Features: High reliability.

Because DCS disperses the system control function on each computer, and the system structure adopts a fault-tolerant design, the failure of one computer will not lead to the loss of other functions of the system. In addition, because the tasks undertaken by each computer in the system are relatively simple, the reliability of each computer in the system can also be improved by using a dedicated computer with a specific structure and software for the functions that need to be achieved.

Open. DCS adopts open, standardized, modular and serial design, each computer in the system adopts LAN mode of communication, realizes information transmission, when it is necessary to change or expand the system function, the new computer can be connected to the system communication network or removed from the network, almost does not affect the work of other computers in the system.

Flexibility. Through the configuration software, the software and hardware configuration of Huiqianyu is carried out according to different process application objects, that is, to determine the measurement and control signals and the connection relationship between them, to select the applicable control rules from the control algorithm library, and to call the various monitoring and alarm screens required by the basic graphics from the graphics library, so as to conveniently constitute the required control system.

Easy to maintain. Small or micro special computer with a single function, with the characteristics of simple maintenance and convenience, when a part or a computer fails, it can be replaced without affecting the operation of the whole system, and the fault can be quickly eliminated.

Coordination. Each workstation transmits various data through the communication network, and the whole system information is shared and coordinated to complete the overall function and optimization of the control system.