Dynamic scene spontaneous recovering method used for triplication redundancy computers

A recovery method and three-mode redundancy technology, the redundancy applied in the hardware is used for data error detection, response error generation and other directions, which can solve problems such as failure reconstruction failure and inconsistency, and improve system reliability and security. improve the efficiency of refactoring

Active Publication Date: 2013-11-20
NO 513 INST THE FIFTH INST OF CHINA AEROSPACE SCI & TECH
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  • Abstract
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Problems solved by technology

If the software operation site of the normal computer changes, but the faulty computer is still waiting to wake up at the preset software operation code after the reconstruction is complet

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  • Dynamic scene spontaneous recovering method used for triplication redundancy computers

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Embodiment Construction

[0017] In order to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Assume that the computer on board a project is a three-mode redundant fault-tolerant computer used in the upper-level control tasks. It adopts a three-mode redundant fault-tolerant design scheme and has three main CPUs. The CPU numbers are 1, 2, 3, namely three Mutual redundant computers, of which there is only one host right, the initial power-on default is the first computer, the 1553B bus working mode of the host is BC mode, the other two computers are MT working mode, BC mode is for bus communication, MT mode is for bus monitoring , If the host is abnormal, the host authority will be transferred to the 2nd unit, at this time the 2nd unit will change to the BC working mode, and the transfer of the main-level authority will be 1> 2> 3> 1. Each computer...

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Abstract

The invention discloses a dynamic scene spontaneous recovering method used for triplication redundancy computers. When a system works normally, the system is in a three-computer working mode. When one computer module breaks down, computer modules which work normally can conduct fault detection on the computer which breaks down and conduct degradation processing, and the system is changed to be in a double-computer working mode. Then, system reconfiguration recovery is conducted on the computer which breaks down, and the normal computers send reconfiguration data to the computer which breaks down through a three-computer communication interface. After reconfiguration is completed, the computer which breaks down reenters the system to recover normal work, so that the system recovers to be in the three-computer working mode, and the reliability of the system and the safety of the system are greatly improved. The dynamic scene spontaneous recovering method can solve the problems brought by the facts that at present, during triplication redundancy fault-tolerant computer reconfiguration recovery, different modes run in CPU boards and software running scenes change.

Description

Technical field [0001] The invention relates to the technical field of dynamic on-site autonomous recovery for fault-tolerant systems, and in particular to a dynamic on-site autonomous recovery method for three-mode redundant computers. Background technique [0002] Compared with the commonly used dual-redundant computer structure, the three-mode redundant fault-tolerant computer has higher safety performance and has more urgent application requirements in the safety-critical control field. The three-mode redundant fault-tolerant computer has the following characteristics: through the synchronization of time and tasks, the three single machines are guaranteed to run completely synchronously; the single point of failure is completely eliminated in the system design; the single-machine failure is shielded through the three-machine voting mechanism, and the single machine fails. There is no need to interrupt the current task; and it can remove the faulty single machine from the syst...

Claims

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Application Information

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IPC IPC(8): G06F11/16
Inventor 谭沛靳加农曹振兴牟文秀邱庆林
Owner NO 513 INST THE FIFTH INST OF CHINA AEROSPACE SCI & TECH
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