计算机工程 ›› 2010, Vol. 36 ›› Issue (5): 15-17.doi: 10.3969/j.issn.1000-3428.2010.05.006

• 博士论文 • 上一篇    下一篇

空间DSP加载系统可靠性设计

张 路,贺兴华,卢焕章   

  1. (国防科技大学ATR实验室,长沙 410073)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-03-05 发布日期:2010-03-05

Reliable Design of Space DSP Bootloading System

ZHANG Lu, HE Xing-hua, LU Huan-zhang   

  1. (ATR Lab, National University of Defense Technology, Changsha 410073)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-03-05 Published:2010-03-05

摘要: 在空间环境中,长时间运行的空间飞行器信息处理系统存储器容易发生单粒子翻转现象(SEU),而单粒子翻转现象是导致空间飞行器失效的主要原因之一。基于此,通过分析SEU现象对不同类型存储器的影响,阐述SEU现象对加载可靠性的影响。通过重新设计加载系统结构,并引入三模冗余、检纠错编码和定时刷新FLASH存储器的方法,降低系统加载时由于SEU而失败的概率,提高系统加载运行的可靠性。

关键词: 差错检测和纠正, 数字信号处理器, 加载, 单粒子翻转

Abstract: In space environment, Single-Event Upset(SEU) occurs in the memories of information processing system which runs on the platform of space aircraft. Researching on the effect of SEU with different memory, a new boot system is designed and several measures such as adding Error Detection And Correction(EDAC) module and refreshing the FLASH-ROM are carried on to reduce the error probability on booting, and it increases the reliability of DSP system.

Key words: Error Detection And Correction(EDAC), Digital Signal Processor(DSP), bootloading, Single-Event Upset(SEU)

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