基于模糊熵的轨道电路分路不良故障自动预警系统设计

Design of automatic early warning system for track circuit's poor bifurcation fault based on fuzzy entropy

摘要:

为使预警软件能够准确识别轨道电路分路的不良故障行为，设计基于模糊熵的轨道电路分路不良故障自动预警系统。设置电源电路，借助RS485转RS232接口模块，将电源回路与微处理器元件、显示及报警模块相连，完成轨道电路分路不良故障自动预警系统硬件设计。根据熵性质定义条件，求解模糊熵参数，以此为基础，分析故障信号的模糊特征，完成模糊熵算法的预警原理研究。完善编码器-解码器结构模型，根据预警指标取值结果，界定警限区域范围，实现轨道电路分路不良故障预警体系的建立，完成基于模糊熵的轨道电路分路不良故障自动预警系统软件设计。对比实验表明，应用基于模糊熵自动预警系统，可将非故障电压与故障电压之间的差值水平控制在0.05kV之内，在提升系统主机对于轨道电路分路不良故障行为的预警能力方面具有突出应用价值。

Abstract:

In order to make the warning software can accurately identify the bad fault behavior of track circuit, the automatic warning system of track circuit bad fault based on fuzzy entropy is designed. With the help of RS485 to RS232 interface module, the power circuit is connected with the microprocessor component, display and alarm module, and the hardware design of the automatic warning system for the track circuit's bad branch fault is completed. According to the entropy properties, the conditions are defined and the fuzzy entropy parameters are solved. Based on this, the fuzzy characteristics of fault signals are analyzed, and the early warning principle of fuzzy entropy algorithm is studied. The structure model of encoder-decoder is improved, the range of warning limit area is defined according to the value result of warning index, the early warning system of track circuit bad branch fault is established, and the software design of automatic early warning system of track circuit bad branch fault based on fuzzy entropy is completed. Comparative experiments show that the fuzzy entropy based automatic warning system can control the difference between the non-fault voltage and the fault voltage within 0.05kV, which has outstanding application value in improving the system host's early warning ability for the bad fault behavior of track circuit branching.