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A priority chain voting device suitable for space application multi-machine system

A multi-machine system and priority chain technology, applied in the field of electronic information, can solve problems such as complex hardware design, unsupported cold backup, complex master-slave switching, etc., to achieve the effect of avoiding disorderly competition and strong real-time performance

Active Publication Date: 2017-10-24
NO 771 INST OF NO 9 RES INST CHINA AEROSPACE SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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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 is relatively complicated, and the master-slave switch is relatively complicated, requiring the participation of multiple machines. Mutex, not suitable for long-lived systems

Method used

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  • A priority chain voting device suitable for space application multi-machine system
  • A priority chain voting device suitable for space application multi-machine system
  • A priority chain voting device suitable for space application multi-machine system

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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 priority chain voting device suitable for multi-computer systems in space applications, which includes several sets of identical subsystems, which are respectively installed in each computer, and each subsystem includes a local Fv voting module and a local MC state control module , the local Fv voting module is output when the self-test result of the local fault-tolerant software is correct, the multi-machine communication comparison result is correct, the local hardware watchdog signal is invalid, the local reset signal is invalid, and other stand-alone clearing local Fv signals are invalid. Valid, the local MC state control module outputs valid when the running result Fv of the local machine is valid and the MC state of the single machine whose priority is higher than that of the local machine is invalid. The invention can conveniently realize autonomous redundancy and fault tolerance between multi-computer systems, and system reconstruction, and has the characteristics of strong real-time performance, high reliability and long 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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Patent Type & Authority Patents(China)
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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