Synchronization process of total distributed control system operator stations EMS memory database structure storage

A distributed control system, operator station technology, applied in the directions of comprehensive factory control, comprehensive factory control, electrical program control, etc., can solve problems such as the insufficiency of real-time database, achieve less resource occupation, solve data conflicts, and realize simple technology. Effect

Inactive Publication Date: 2008-04-09
ZHEJIANG UNIV
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Problems solved by technology

The real-time database as the data exchange center of each functional module of the distributed control system can no longer meet the application requirements, and the development of the memory database oriented to the distributed control system is an effective technology to solve this technical problem

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  • Synchronization process of total distributed control system operator stations EMS memory database structure storage
  • Synchronization process of total distributed control system operator stations EMS memory database structure storage
  • Synchronization process of total distributed control system operator stations EMS memory database structure storage

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Embodiment Construction

[0019] The distributed control system is composed of three basic subsystems, the on-site control station, the operator station and the engineer station, which are connected to the control network. The operator station is based on the operation configuration The file is a data dictionary, the memory database is established in the shared RAM memory of the operator station, the operation configuration file is stored in the Flash memory, the data structure and data are stored separately, and the monitoring of the industrial site is realized on the real-time monitoring platform of the operator station; for The data update mode of the memory database of the operator station is single, and the synchronization of the memory database is achieved by using the read-write double pointer combined with the read-write semaphore technology; in view of the characteristics of the operating mode of the operator station, a multi-level pointer storage structure is used to represent the memory databa...

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Abstract

The invention discloses a synchronization method of memory database structure storage of a distributed control system operator station. An operation configuration file is stored inside the operator station built-in Flash memory. The operation configuration file is taken as a data dictionary and establishes a memory database inside the operator station share RAM memory, the memory database structure is stored separately with the data and is monitored on a real-time monitoring software platform. By adopting a multi-level pointer storage structure, the memory database relational tuple is expressed as a pointer set pointing to the actual data. Aiming to the single update feature of the operator station, the invention adopts the read-write double-pointer and combines the read-write signal amount technology to realize the synchronization of the memory database. The invention effectively solves the data integrity and consistency problems caused by the data confliction when reading and writing task of the operator station; the multi-pointer storage structure has the high efficiency of direct address visit, is suitable for operator station memory database variable word length field special requirements and the industrial field data are only needed to be stored once in the memory database.

Description

technical field [0001] The invention relates to the fields of distributed control systems and computers, in particular to a method for synchronizing the structure storage of the internal memory database of the operator station of the distributed control system. Background technique [0002] In industrial production, the system with the most direct and obvious application benefits should be the industrial control system, especially the distributed control system. The distributed control system is a centralized management and decentralized control system. It is an advanced control system that integrates computer technology, control technology and communication network technology. The functions of system management, control, and data collection are scattered among different computers in the system. In the traditional resident disk database DRDB, transaction processing involves time-consuming disk IO, which is not suitable for real-time applications. The distributed control sys...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 李化东吴明光安庆敏
Owner ZHEJIANG UNIV
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