Who has the information on the DCS 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 technology, its basic idea is decentralized control, centralized operation, hierarchical management, flexible configuration, convenient configuration.

Overview: The system is mainly composed of on-site control station, data communication system, man-machine interface unit, cabinet, power supply, etc. The system has an open architecture and can provide multi-layer open data interfaces.

The hardware system has a high degree of reliability, easy maintenance and advanced technology in harsh industrial sites. The underlying Chinese software platform has powerful processing functions, and provides convenient configuration of complex control systems and the ability of users to independently develop special advanced control algorithms, which is easy to configure and easy to use.

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.

Categories: Education, Science, >> Science & Technology.

Problem description: What is DCS system, it seems to have something to do with the switch.

Analysis: DCS, (distributed control system) is the abbreviation of distributed control system, which is generally used to be called distributed control system in China. DCS 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 technology, its basic idea is decentralized control, centralized operation, hierarchical management, flexible configuration and convenient configuration.

DCS has the following features:

1) High reliability. Because DCS distributes the system control function to 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, a special computer with a specific structure and software can be used for the functions that need to be realized, so that the reliability of each computer in the system is also improved.

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

Discrete Control System Decentralized control system.

It is used in industrial control and is widely used in petrochemical, chemical, electric power and other industries. In short, through the operation of the computer in the control room, the control of field equipment and materials is realized.

Definition: The control system designed on the basis of multiple microprocessors, with decentralized control functions, centralized display operations, and the principle of decentralization and autonomy and comprehensive coordination, is called distributed control system (DCS).

Technical support: four C technology (computer technology, communication technology, CRT display technology, CRT process control technology).

From the point of view of the control system:

DCS is a hierarchical control system. Different functions are done at each level. The functional hierarchical system is a significant feature of the decentralized control system, and it is the key to realize the decentralization of control functions and the centralization of operation and display.

1.Process control level.

Equipment: field station (acquisition station, control station).

Function: data acquisition, computing processing and control output; Communication through communication networks and control management level communication.

Composition: communication module, controller module and IO module.

2.Control the administrative level.

Equipment: Operator Station, Engineer Station.

Functions: Monitoring and Operation; Interfaces between people and processes. Data is sent to the production management level through the gateway machine.

engineering configuration, parameter adjustment and system maintenance; The interface between people and systems.

Composition: host and peripherals.

3.Production management level.

Equipment: Real-time data server, workstation.

Functions: monitoring and management of plant-level production process, plant-level fault diagnosis and analysis, plant-level performance index calculation. Data is sent to the operation and management level through the gateway machine.

4 .Management level.

Devices: Data servers, workstations.

Functions: plant-level operation management, financial management and personnel management, etc.

From an information systems perspective:

DCS is a data communication system with different network structures, connecting nodes with different functions to realize information transmission and exchange between nodes.

From the point of view of the computer system:

DCS is divided into hardware system and software system.

1 Hardware system.

A range of microprocessor-based smart modules, process channels, communication interfaces, and various peripherals.

2 Software systems.

It includes an operating system for system management, a database system, data communication software, configuration software and a series of standardized functional modules for process control.

DCS control system generally refers to a distributed 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 functions, centralized display operation, autonomy and comprehensive coordination.

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

PLC is defined as a programmable controller is an electronic system that operates digitally and is designed for use in an industrial environment. It uses programmable memory to store instructions for performing logical operations, sequence control, timing, counting and arithmetic operations, and controls various types of machinery or production processes through digital and analog inputs and outputs.