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Seamless reconstruction method of three-module redundant fault tolerant computer based on micro-packet protocol

A redundant fault-tolerant computer technology, which is applied to the redundancy of hardware for data error detection, calculation, and response error generation, can solve problems such as complex management and unsuitability

Inactive Publication Date: 2010-06-02
CAPITAL NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the recovery process, the system adopts dual-computer and three-mode mixed operation mode, which is complicated to manage and is not suitable for application in three-mode redundant fault-tolerant computers.

Method used

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  • Seamless reconstruction method of three-module redundant fault tolerant computer based on micro-packet protocol
  • Seamless reconstruction method of three-module redundant fault tolerant computer based on micro-packet protocol
  • Seamless reconstruction method of three-module redundant fault tolerant computer based on micro-packet protocol

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Embodiment Construction

[0025] Without loss of generality, this embodiment adopts a triple-mode redundant fault-tolerant computer composed of 80X86 processors as the target system, and the system structure is as follows figure 1 shown. The system consists of three isomorphic computer modules, the main frequency of the CPU is 100MHz, and the memory is 64MB, including a 32-bit precision 1μs time-base timer and several switch outputs. Each computer module includes three functional modules related to fault-tolerant management, such as a three-computer synchronization module, a serial data exchange module and a power supply management module. The three-machine synchronization module is used to maintain the synchronization of the three machines during system execution. Under the control of the normal computer module, the power management module can control the power on and off of the faulty machine. The serial data exchange channel of the three computer modules constitutes a synchronous serial communicat...

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Abstract

The invention provides a method for reconstructing and restoring by a micro-packet protocol structure. The method uses a triplication redundancy fault-tolerant computer as a target system, wherein thetarget system consists of three redundancy (either isomorphism or isomerism is acceptable) computer modules; each redundancy computer module comprises a three-computer synchronizing module, a serialdata exchange module and a power supply management module. The method is characterized in that when a certain computer module which is restored from a failure is subjected to reconstruction restoration, the reconstruction restored data is divided into proper data packets, each data packet comprises a type domain, a length domain, a target address domain, a data block and a verification domain; andaccording to difference of the type domain, the format of the data packets can be expanded to a reconstruction command packet protocol through combining with requirement of reconstruction in different states. Through transmitting the data packets during idle time, the method can maintain continuous work of the system in the process of reconstruction.

Description

technical field [0001] The invention relates to a seamless reconfiguration method of a redundant fault-tolerant computer based on a micropacket protocol, in particular to a seamless reconfiguration method of a triple-mode redundant fault-tolerant computer based on a micropacket protocol. Background technique [0002] Triple-mode redundant fault-tolerant computer (TMR) can ensure the correctness of system task execution in case of single-mode failure, and can effectively improve the security and reliability of real-time embedded systems. It has a wide range of applications in aerospace, aviation, railway control and other fields. Application requirements. When a single computer module fails, the TMR computer will be downgraded to a dual-machine working mode. If it is not repaired, the system will not be able to fault-tolerant to subsequent failures, and the safety and reliability will be reduced accordingly. Faults that cause system degradation can be transient or permanent....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/18G06F11/00
Inventor 张伟功朱晓燕关永张永祥周全尚媛园朱虹
Owner CAPITAL NORMAL UNIVERSITY