System structure:

The distributed control system adopts standardized, modularized and serialized design, and consists of centralized management part, decentralized control detection part and communication part. The centralized management part includes management computer, engineer station and operation station. The management computer is used for information management and optimal control of the system, the engineer station is used for configuration and maintenance, and the operation station is used for monitoring and operation. The decentralized control and monitoring part includes control station, monitoring station or field control station, which is used to control and detect the communication part to connect various distributed parts of the system and complete the transmission of data, instructions and other information.

System features:

1. Each workstation independently completes the specified tasks of data acquisition, processing, calculation, monitoring, operation, control, etc. that are reasonably allocated. Complete control functions, rich control algorithms, integrated continuous control and batch control, and high system controllability.

2. Easy operation, intuitive display and good monitoring.

3. The human-computer dialogue system is practical and simple. The process flow state diagram, parameter list, historical trend diagram, real-time trend diagram, information alarm, fault analysis, operation guidance and other windows are rich.

4. DCS control system can be programmed in special software environment through laptop computer Minor parameter modification and program change will not cause interruption when being sent to DLC, and the internal variable parameters of PLC can also be continuously written online, thus facilitating the maintenance and inspection of the program.

5. Building block system structure, hardware and software of open, standardized and modular design, flexible configuration, good adaptability and expandability.

6. Real time acquisition, analysis, recording, monitoring, operation and control of process object parameters, online modification of system structure and configuration loop, online maintenance of local faults, and high system availability.

7. The system structure fault-tolerant design is adopted, which can maintain the integrity of the system in case of any unit failure, and maintain the work of local stations in case of global communication or management station failure.

8. With accident alarm, dual measures, online fault handling and other means, the system has high reliability and safety