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redundant control unit

A redundant control and redundant communication technology, applied in the direction of comprehensive factory control, general control system, control/regulation system, etc., can solve common cause failure, strong coupling of processor units, low stability and safety of fault-tolerant system, etc. problem, to achieve the effect of overcoming strong coupling and strong independence

Active Publication Date: 2022-05-31
ZHEJIANG SUPCON TECH
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Problems solved by technology

[0005] The purpose of this application is to provide a redundant control device for the above-mentioned deficiencies in the prior art, so as to solve the problems of strong coupling between processor units and common cause failures in the prior art, thereby causing this type of fault tolerance System stability and low security issues

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Embodiment Construction

[0042]In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. The drawings are only for the purpose of illustration and description, and are not used to limit the protection scope of the present application. In addition, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented in accordance with some embodiments of the application. It should be understood that the operations of the flowcharts may be performed out of order and that steps without logical context may be performed in reverse order or concurrently. In addition, those skilled in the art can add one or more other operations to the flowchart, and can also re...

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Abstract

The application provides a redundant control device, which relates to the technical field of industrial control. The device includes: multiple safety controllers and fault-tolerant units, each safety controller includes multiple processing boards and at least one isolation unit, and each processing board is electrically isolated through the isolation unit; each processing board is provided with a processor chip, redundant The communication unit and the fault-tolerant communication unit, the processor chip on each processing board obtains the data of other processor chips on the safety controller through the redundant communication unit, and receives the data of the external device through the fault-tolerant communication unit; The data obtained from other processor chips on the safety controller and the data received from external devices are voted to obtain the processing result of the processing board, and the processing result is sent to the fault-tolerant unit through the fault-tolerant communication unit, and the fault-tolerant unit performs a vote on each processing board The data sent is voted on. This solution solves the problems of strong coupling and common cause failure among processor units in the prior art.

Description

technical field [0001] The present application relates to the technical field of industrial control, and in particular, to a redundant control device. Background technique [0002] A fault-tolerant system is a highly reliable computer system that can continue to perform calculations and output correct results in the event of failure of some hardware or software resources. It is widely used in petrochemical and offshore drilling with high safety and high availability requirements. platform and other scenarios. [0003] At present, in fault-tolerant systems, on-chip multi-core redundancy technology is mainly used, that is, multiple identical processor units are integrated into the same chip, and multiple processor units in the chip process the same processing tasks at the same time, and then, The processed result is output to the voter in the fault-tolerant system, and the voter votes and outputs the result according to the principle of "minority obeys the majority", thereby ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B9/03
CPCY02P90/02
Inventor 金建祥张则立朱杰江竹轩吴晶晶
Owner ZHEJIANG SUPCON TECH
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