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DCS is the abbreviation of Distributed Control System, which is also called distributed control system in the domestic automatic control industry. It is a multi-level computer system composed of process control level and process monitoring level with communication network as the link. It integrates computer (Computer), communication (Communication), display (CRT) and control (Control) and other technologies.

Its basic idea is Distributed control, centralized operation, hierarchical management, flexible configuration and convenient configuration.

The DCS system mainly consists of field control station (I/O station), data communication system, human-machine interface unit (operator station OPS, engineer station ENS), cabinet, power supply, etc. The system has an open architecture and can provide multi-layer open data interface.

The hardware system has high 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 support for users to independently develop special advanced control algorithms; easy to configure and easy to use. Support multiple fieldbus standards to meet future expansion needs.

Compared with conventional control instruments:

Advantages: Complete control functions, can realize complex control and optimal control. It is convenient for information integration and analysis.

Problems:

1. Danger concentration

2. Performance problems: single machine overload

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