The invention discloses a system for detecting pressure signals of bolts for urban subway tracks. The system comprises a pressure sensor, a wireless transmission module, an upper computer and a voltage-stabilizing circuit, wherein the pressure sensor is used for acquiring pressure generated by the pressure sensor when bolt gaskets are extruded by the bolts; the wireless transmission module is usedfor sending the pressure signals to the upper computer of a train; the upper computer is used for performing fault diagnosis of the track bolts and feeding a diagnosis result back to a trainman; andthe voltage-stabilizing circuit is used for taking electricity from a contact net arranged on the track. The method for detecting states of the bolts provided by the invention comprises the followingsteps: acquiring the pressure against the bolt gaskets through the bolts by adopting the pressure sensor; acquiring pressure and position labels of the bolts by adopting the upper computer; building abolt database; inputting the pressure of the bolts into a trained support vector classifier; and marking the bolt states. According to the system and the method disclosed by the invention, the laborcost is greatly reduced, the efficiency is high, the overall size is small, the maintenance cost is low, and later repairing of the tracks is convenient.

    本发明公开了一种城市地铁轨道螺栓压力信号检测系统,其包括:压力传感器,采集螺栓挤压螺栓垫片时压力传感器产生的压力;无线传输模块,将压力信号发送给列车上的上位机;上位机。进行轨道螺栓的故障诊断,并将诊断结果反馈给列车员;稳压电路,稳压电路从轨道上接触网取电。本发明提供的螺栓状态检测方法包括:压力传感器采集螺栓对螺栓垫片的压力、上位机收集螺栓压力及位置标签、建立螺栓数据库、螺栓压力均输入训练好的支持向量分类器中、标记出螺栓状态等步骤。本方案大大降低了人力成本,效率高,整体小巧,维护成本低,便于后期轨道维修。


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    Title :

    System for detecting pressure signals of bolts for urban subway tracks and method


    Additional title:

    一种城市地铁轨道螺栓压力信号检测系统及方法


    Contributors:
    OUYANG JIE (author) / LIU YANG (author) / ZHAO MIN (author) / WANG ZEZHI (author) / LI WEI (author) / MA LAN (author)

    Publication date :

    2020-12-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B61K Andere Hilfseinrichtungen für Eisenbahnen , OTHER AUXILIARY EQUIPMENT FOR RAILWAYS / G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE / G06K Erkennen von Daten , RECOGNITION OF DATA



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