Multicomputer system priority chain voting device applied to space application

A multi-machine system and priority chain technology, applied in the field of electronic information, can solve the problems of complex hardware design, no cold backup support, and no mutual exclusion of hardware, so as to avoid disorderly competition and achieve the effect of strong real-time performance.

Active Publication Date: 2014-03-12
NO 771 INST OF NO 9 RES INST CHINA AEROSPACE SCI & TECH
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Problems solved by technology

The disadvantage is that it is only suitable for the three-machine hot backup system, does not support cold backup, and only supports single margin faults. The hardware design

Method used

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  • Multicomputer system priority chain voting device applied to space application
  • Multicomputer system priority chain voting device applied to space application
  • Multicomputer system priority chain voting device applied to space application

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, and the present invention includes but not limited to the following embodiments.

[0032] The logic block diagram of the multi-machine priority chain voting device is as follows: figure 2 shown.

[0033] The multi-computer priority chain voting device includes several sets of identical subsystems, which are respectively installed in each computer. Each subsystem is divided into two modules, which are the local Fv voting module and the local MC state control module.

[0034] Local Fv voting module input signal:

[0035] 1) The self-test results of the fault-tolerant software of the machine and the comparison results of multi-machine communication;

[0036] 2) Local hardware watchdog signal (WDT#);

[0037] 3) Local reset signal (RESET#);

[0038] 4) Other stand-alone clears the local Fv signal (CLR_FV#).

[0039] Local Fv voting module output signal:...

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Abstract

The invention provides a multicomputer system priority chain voting device applied to a space application. The device comprises a plurality of identical subsystems which are installed on computers respectively, each subsystem comprises a local machine Fv voting module and a local machine MC state control module, each local machine Fv voting module is valid in output when the situation that a local machine fault-tolerant software self-inspection result is right, a multicomputer communication comparative result is right, a local machine hardware watchdog signal is invalid, a local machine reset signal is invalid and other one-machine clear local machine Fv signals are invalid is met, and each local machine MC state control module is valid in output when the situations that a local machine operation result Fv is valid and a local priority is higher than a local one-machine MC state are invalid. The device can conveniently achieve independent redundant fault-tolerance of amulticomputer system and system reconfiguration, and has the advantages of being high in real-time performance and reliability and long in service life.

Description

technical field [0001] The invention relates to a voting device, which belongs to the technical field of electronic information. Background technique [0002] The design method of the multi-machine system priority chain voting device (taking three machines as an example) widely used in the space computer field is as follows: the system is composed of three identical single machines (A, B, C), and the three single-machine running programs Similarly, after the system is powered on, the three machines run at the same time. Through the self-test of the underlying fault-tolerant software or the interactive communication between the three machines, each single machine outputs the current flight of this machine and the other two machines (MC='1', set this machine as the current Flight, MC='0', set this machine as non-on-duty flight) status flag, completely through the hardware voting, and finally output the master-slave control of the system, and the priority order among the three ...

Claims

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Application Information

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IPC IPC(8): G06F11/00
Inventor 曲翕吴铭麻建文张婧媛冶晓利郭芳
Owner NO 771 INST OF NO 9 RES INST CHINA AEROSPACE SCI & TECH
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