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将 Poage 提出的用三值特性描绘的逻辑式变形一下,得到包含故障的二值逻辑式;它用图形来表示则成全通路图。全通路图简化后成为逻辑通路图。用逻辑通路图的概念可以检测和诊断单故障,用全通路图的概念可以检测多故障。逻辑通路图可以用带故障标志的逻辑式来表示。实际上单,多故障的检测和单故障的诊断全用该式进行。将求测试组的过程变成简单的逻辑运算。文中通俗地说明了全通路图及其简化;介绍了无扇出,有扇出无冗余、有冗余等情况下单故障的检测和诊断以及多故障的检测,最后给出了实例。
Deforming the logic represented by the three-valued character proposed by Poage gives a binary logic equation containing the fault; it uses a graph to represent the complete path map. All-pass map simplified to become a logical route map. The concept of logical pathgraphs can detect and diagnose single faults, and the concept of full pathgraph can detect multiple faults. Logical path diagrams can be represented logically with fault flags. In fact, single, multiple fault detection and single fault diagnosis using the formula. The process of seeking test groups into a simple logic operation. The paper fully describes the all-access roadmap and its simplification. The paper introduces single-fault detection and diagnosis without fan-out, fan-out without redundancy, redundancy detection and so on. Finally, an example is given.