基于IEEE1149．4标准的K节点故障诊断方法研究

Study of K-Node Fault Diagnosis Based on IEEE1149. 4

IEEE1149．4标准为解决数模混合电路的边界扫描测试提供了有效的方法;在IEEE1149．4标准所提出的模拟互连测试结构的基础上,结合K节点故障的可测性原则和测试节点选择方法,实现对常规的复杂无源模拟电路网络进行符合IEEE1149．4标准的可测性设计进行故障诊断,并通过实例验证该方法的有效性。

IEEE1149.4 infrastructure has been aimed primarily for the boundary scan test of the mixed-signal circuit, This paper based on the infrastructure of the analog interconnect in IEEE1149.4, by using k-node fault testability and test-node selection method, accom- plishes the design for test of the complex analog network, develops a new method of fault diagnosis. The application shows the efficiency of the method.