Qualitative Analysis of Fault Tree Diagnosis for TCAS Data Processor

On the basis of hierarchical fault diagnosis model, the characteristics of TCAS system are studied and a hierarchical fault diagnosis model based on actual TCAS system is designed and constructed. According to the relationship between system modules, a fault propagation stage model based on directed graph is established, and the fault is located to a specific data processor. Combined with the fault tree principle, a fault location model for TCAS data processor is established, and the detection points and components are detected and analyzed, and finally the fault source is determined. Experimental results show that the hierarchical fault diagnosis model can fully express the fault knowledge of TCAS data processor, and improve the system fault diagnosis ability and operation efficiency.