北京航空航天大学学报 ›› 2008, Vol. 34 ›› Issue (10): 1200-1203.

• 论文 • 上一篇    下一篇

总线互连故障的一种快速诊断算法

钟 波, 孟晓风, 季 宏, 陈晓梅   

  1. 北京航空航天大学 仪器科学与光电工程学院, 北京 100191
  • 收稿日期:2007-09-27 出版日期:2008-10-30 发布日期:2010-09-16
  • 作者简介:钟 波(1980-),男,重庆人,博士生,buaa_zb@aspe.buaa.edu.cn.
  • 基金资助:

    武器装备预研课题资助项目(412030102)

Fast diagnosis algorithm for interconnect faults on system buses

Zhong Bo, Meng Xiaofeng, Ji Hong, Chen Xiaomei   

  1. School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2007-09-27 Online:2008-10-30 Published:2010-09-16

摘要: 数字总线的互连测试与故障诊断对于电子产品的生产和维护具有重要的意义.针对现有算法存在冗余测试以及测试时间长等问题,通过对总线互连故障的特征分析,提出了一种自适应快速诊断算法.该算法将测试过程分成两个阶段:第1阶段,诊断各个超网络上的短路和呆滞故障,按照短路关系将超网络分成若干集合;第2阶段,根据第1阶段的分组结果,对各集合中的超网络加载"并行走步1"向量,以诊断其开路故障.仿真结果表明,该算法可在保证故障诊断最大化的前提下,减少冗余测试,有效压缩测试向量长度,实现故障的快速诊断.

Abstract: The interconnect test and fault diagnosis for system buses are important to the manufacturing and maintenance of electronic products. The previous test algorithms which are proposed in literatures have some problems, such as existing redundant test vectors and having long test time etc. An adaptive and fast diagnosis algorithm was proposed according to the analysis of the interconnect-fault syndromes on system buses. The test process was divided into two phases. In the first phase, the short and stuck-at faults on supernets were diagnosed and then the supernets were divided into several groups according to the diagnosed short faults. In the second phase, the "parallel walking 1" test vectors were applied to the grouped supernets to diagnose the open faults. The results show that the proposed algorithm can support maximal diagnosis, remove the redundant test vectors, shorten the test time and realize fast diagnosis.

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