Active software fault-tolerant method based on linked list

Abstract

An active fault-tolerating method of software based on chain list includes using application software to realize all function, dividing application software to be multiple function module as each module containing a master algorithm and N numbers of backup algorithms, using fault-tolerant software to monitor operation of each function module and revising module relation chain list to start up relevant backup algorithm for tolerating error by fault-tolerant software when master algorithm of certain function module is on error as well as shielding off said function module by fault-tolerant software when N numbers of backup algorithms are all on error.

Description

technical field [0001] The invention relates to a software active fault-tolerant method, in particular to a software active fault-tolerant method based on a link table, which adopts a software active fault-tolerant design method for a lunar surface inspection detector based on a link table. Background technique [0002] Software fault tolerance is the ability of software to detect software or hardware faults that will occur or have occurred in the system and recover from the faults. It has two meanings: one is to use software to achieve the purpose of fault tolerance, and the other is to allow software faults by the software itself . The main purpose is to provide sufficient redundant information and algorithm programs, so that the system can detect programming errors in time during actual operation, and take remedial measures to improve software reliability and ensure the normal operation of the entire computer system. There are generally two strategies for fault recovery:...

AI Technical Summary

Problems solved by technology

[0009] Since the lunar patrol detector adopts an integrated electronic system, the software of the whole vehicle is also integrated to realize the functions of various management, algorithm realization, data collection, processing and transmission of the whole vehicle, which affects the reliability and safety of the software. Therefore, software fault tolerance is a necessary means to meet the requirements of safety and reliability; secondly, due to the special scientific mission of the lunar surface inspection probe, especially on the first moon landing probe, there are many experimental projects , the algorithm is diversified to facilitate experimentation, which requires the software to be easy to reorganize different code modules with similar functions through redundant refactoring, so as to fully verify the differences between different algorithms; moreover, there are many unknown factors in the environment of the planet's surface, and Ground software testing can usually detect fatal errors in the code, but it is difficult to completely detect non-fatal errors that may occur in the actual environment, so the software is required to have a certain degree of autonomous fault tolerance to ensure the normal function of the vehicle

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