Satellite borne electronic system on basis of hot backup and hot backup method
An electronic system and hot backup technology, applied to the generation of response errors, error detection of redundant data in hardware, etc., can solve the problems of time delay of on-board electronic systems, cannot guarantee real-time continuous completion of tasks, etc., and achieve improvement The effect of using
Active Publication Date: 2014-04-16
AEROSPACE DONGFANGHONG DEV LTD
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Problems solved by technology
[0005] The technical problem solved by the present invention is to provide a hot backup-based on-board electronic system and a hot-backup method, which overcomes the technical problems of time delay in the prior art on-board electronic system and cannot guarantee real-time and continuous completion of tasks, and improves the reliability of the system. sex
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[0021] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.
[0022] like figure 1 As shown, the specific implementation method of the present invention is: build a kind of on-board electronic system based on hot backup, comprise a plurality of stand-alone machines 1 and the bus 2 that connect stand-alone with mutual backup function to work independently, described a plurality of stand-alone machines 1 through bus 2 connections, each of the stand-alone machines 1 includes a functional unit 11 for performing system functions and backup work, a frequency generating unit 12 for generating frequency pulses when the stand-alone machines 1 are working, and a unit for comparing the frequency pulses generated when each stand-alone machine 1 is working Frequency comparison unit 13, the frequency pulse generated by the frequency generating unit 12 of each stand-alone 1 is sent to the frequency comparison unit 13 of al...
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The invention relates to a satellite borne electronic system on the basis of hot backup and a hot backup method. A plurality of single machines are connected through a bus. A frequency pulse generated by a frequency generating unit inside each single machine is transmitted to frequency comparison units of all the single machines for carrying out frequency comparison. Priorities of all the single machines are set by a frequency pulse comparison result of the frequency comparison units. The single machine with the highest priority is used as a host. When the single machine serving as the host has faults to cause the frequency generating unit of the single machine serving as the host not to output the frequency pulse, the single machine serving as the host is switched into the single machine with the highest priority currently by the frequency comparison unit so that the single machine with the highest priority currently is used as the host. After the satellite borne electronic system on the basis of hot backup and the hot backup method are adopted, the task of the satellite borne electronic system can be effectively ensured to be continuously completed in real time in the process of implementing the task when the single machine has the faults and the interruption of the task implementation cannot be caused. Meanwhile, the single machine system which has the faults can also be subjected to reset operation by the satellite borne electronic system, and if the single machine which has the faults is successfully reset, the single machine continuously exists as the backup single machine, so that the utilization of system resources is effectively improved.
Description
technical field [0001] The invention relates to an on-board electronic system and a backup method, in particular to an on-board electronic system based on hot backup and a hot backup method of the on-board electronic system. Background technique [0002] Due to the increasing complexity of the on-board electronic system, the reliability of the device is becoming more and more important. Sometimes the failure of a circuit will lead to the failure of the entire system, resulting in huge losses. The generalized reliability of products includes inherent reliability, operational reliability, and maintainability. For on-board electronic systems, maintainability is not required, and the design focuses more on inherent reliability and operational reliability. [0003] Under the action of external thermal, electrical, mechanical and other stresses, various physical and chemical changes and effects that occur inside and at the interface of space-borne electronic devices will affect or...
Claims
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IPC IPC(8): G06F11/16
Inventor 高岱黄旭柯广贤田佳琳
Owner AEROSPACE DONGFANGHONG DEV LTD