Computer Science ›› 2016, Vol. 43 ›› Issue (Z11): 532-535.doi: 10.11896/j.issn.1002-137X.2016.11A.120

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Research of Fault-tolerant Booting for On-board Computer Based on Anti-radiation Loongson

HUANG Chao, CHEN Yong and LIN Bao-jun   

  • Online:2018-12-01 Published:2018-12-01

Abstract: To protect on-board computer (OBC) against negative impact brought by space environment,a new architecture of OBC which takes a Loongson processor as its core and uses FLASH memory to store the boot program was proposed.Hardware redundancy was combined with error detection and correction (EDAC) and scrubbing technology in fault-tolerant design.Memory data reliability can be improved obviously by EDAC and scrubbing technology.The OBC reliability was analyzed and a fault-tolerant boot method was described on the basis of the new hardware design.The method shields faulty memory chip and software error by hardware redundancy and software backup.The experimental results show that the solution protects OBC against the common fault of the boot process and improves OBC reliability effectively.

Key words: On-board computer,Loongson,Reliability,Fault-tolerant booting

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