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Computer control system based on 2-out-of-2 structure and implementation method thereof

A technology of control system and implementation method, which is applied in the direction of general control system, control/regulation system, instrument, etc., can solve the problems of short fault response time and failure to achieve the synchronization tolerance of the whole system, and achieve small dependence, small data volume, good practical effect

Active Publication Date: 2010-12-15
TRAFFIC CONTROL TECH CO LTD
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  • Abstract
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Problems solved by technology

For systems with a high level of safety sophistication, the fault reaction time is required to be as short as possible. In this case, synchronization after each task may not meet the requirements of the synchronization tolerance of the entire system.

Method used

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  • Computer control system based on 2-out-of-2 structure and implementation method thereof
  • Computer control system based on 2-out-of-2 structure and implementation method thereof
  • Computer control system based on 2-out-of-2 structure and implementation method thereof

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Embodiment Construction

[0035] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] Such as figure 1 As shown, the present invention provides a computer control system based on a 2-for-2 structure, including a security management layer and a 2-for-2 execution layer with two processors, the security management layer and the 2-for-2 execution layer are passed through High-speed communication bus connection. The 2 out of 2 execution layer is used to complete the application processing of each stage, complete the data comparison of different stages, and send the synchronization status signal and the data comparison result to the security management layer; the security management layer is used to control and judge all The above 2 fetches the synchroni...

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Abstract

The invention discloses a computer control system based on a 2-out-of-2 structure and an implementation method thereof. The system comprises a safety management layer and a 2-out-of-2 execution layer with two processors, wherein the safety management layer is connected with the 2-out-of-2 execution layer through a high-speed communication bus; the 2-out-of-2 execution layer is used for finishing application processing of each stage, finishing data comparison of different stages, and sending synchronous state signals and data comparison results to the safety management layer; and the safety management layer is used for controlling and judging the synchronous states of the two processors in the 2-out-of-2 execution layer and judging whether the data comparison results of the two processors are consistent or not.

Description

technical field [0001] The invention relates to the field of industrial control, in particular to a computer control system based on a 2 out of 2 structure and an implementation method thereof. Background technique [0002] Most of the current industrial control systems are computer-controlled systems, and the use of fault-tolerant technology can significantly improve their reliability and availability. However, once the system fails to work normally, it may output dangerous control signals to the controlled equipment, resulting in casualties and property losses. Therefore, fields such as railways, petrochemicals, and steel require industrial control computer systems to be not only highly reliable and highly available fault-tolerant systems, but also fail-safe systems. The computer control system with 2 out of 2 structure has a complete dual-computer comparison ability to detect dangerous side faults, and is widely used in key control processes. [0003] A computer control...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B9/03
Inventor 宁滨王悉马连川袁彬彬
Owner TRAFFIC CONTROL TECH CO LTD
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