基于Petri网的平交道口信号设备故障诊断方法

平交道口是公路和铁路的交汇点，也是事故易发点。针对平交道口安全苛求性特征，研究平交道口信号设备故障诊断方法；以Petri网为工具，对平交道口信号设备控制逻辑和过程进行建模；采用TINA仿真软件生成平交道口信号设备模型的可达图，实现对平交道口信号设备的故障诊断。该故障诊断方法的应用将有助于提升平交道口的安全性和运行效率。

Fault diagnosis method of level crossing signal equipment based on Petri Net

The level crossing is the intersection of highway and railway, and it is also the prone accident point. Aiming at the safety critical characteristics of the level crossing, this paper studied the fault diagnosis method of the level crossing signal equipment, took Petri Net as a tool, modelled the control logic and process of the level crossing signal equipment, used TINA simulation software to generate the reachable graph of the level crossing signal equipment model, and implemented the fault diagnosis of the level crossing signal equipment. The application of this fault diagnosis method would help to improve the safety and operation efficiency of level crossings.