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Disaster recovery method, device and system for PLC (programmable logic controller)-based distributed control system

A distributed control and disaster recovery technology, applied in the PLC field, achieves the effects of easy maintenance, improved real-time performance, and improved disaster recovery capabilities

Inactive Publication Date: 2018-06-22
KYLAND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if multiple hard PLCs in a certain area and the corresponding redundant PLCs cannot work normally, since the hard PLCs in another area are working normally, and the PLCs in the two areas affect each other, At this time, the entire distributed control system can only be stopped to replace the hard PLC in the faulty area

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  • Disaster recovery method, device and system for PLC (programmable logic controller)-based distributed control system
  • Disaster recovery method, device and system for PLC (programmable logic controller)-based distributed control system
  • Disaster recovery method, device and system for PLC (programmable logic controller)-based distributed control system

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] figure 1 A schematic diagram of the structure of a distributed disaster recovery device applying the embodiment of the present invention is shown. like figure 1 As shown, the system architecture may include a client 101 , a server cluster 102 , an input / output (Input / Output, I / O for short) bus 103 , and a device 104 to be controlled. figure 1 Take the server cluster including server 102a, server 102b and server 102c as an example ...

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Abstract

An embodiment of the invention relates to the field of PLCs (programmable logic controllers) and particularly relates to a disaster recovery method, device and system for a PLC-based distributed control system to improve the disaster recovery performance of the distributed control system. The disaster recovery method for the PLC-based distributed control system is applied to a server cluster witha virtual operating system, and each server in the server cluster is provided with a soft PLC, a soft PLC real-time operating system, a soft guard and a soft guard real-time operating system. When thesoft guards determine soft PLC faults, an operating state of each server in the server cluster is acquired, the soft guards determine a target server according to the operating state of each server,the soft guards send configuration instructions to the target server, and the configuration instruction is used for instructing the target server in soft PLC configuration. Automatic soft PLC re-configuration can be realized, and the disaster recovery performance of the distributed control system is improved.

Description

technical field [0001] The embodiments of the present invention relate to the PLC field, and in particular to a disaster recovery method, device and system for a PLC-based distributed control system. Background technique [0002] With the continuous development of computer technology, signal processing technology, control technology network and the continuous improvement of user needs, Programmable Logic Controller (PLC) has been widely used. Such as steel, petroleum, chemical industry, electric power, machinery manufacturing, express delivery and cultural entertainment and other industries. Especially in the application of distributed control system. [0003] In the prior art, a PLC-based distributed control system is composed of multiple hard PLCs. There are usually many devices to be controlled in a distributed control system, which are distributed in a large area, and the devices to be controlled will affect each other. Therefore, it is necessary for the hard PLC in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/05
CPCG05B19/058G05B2219/1204G06F9/45533G06F11/203G06F11/2035G06F11/301G06F2009/45575G05B2219/14006
Inventor 宋健玮
Owner KYLAND TECH CO LTD
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