本发明涉及一种钢轨在线检测方法及系统。所述方法包括:获得振动信号;对所述振动信号进行小波包分解,分解成多个子频带小波包节点;确定所述多个子频带小波包节点中固定节点能量占比和小波包香农熵;基于所述固定节点能量占比和小波包香农熵对钢轨进行检测。所述系统包括:发送器、换能器、滤波器、传感器、接收器、数据传输模块、显示终端、和电源模块。本发明利用传感器在岔区钢轨尖端上采集到的振动信号,通过对振动信号进行小波包分解,进而对固定节点能量占比以及小波包香农熵分析,实现岔区钢轨断轨在线检测。

    The invention relates to a steel rail online detection method and system. The method comprises the following steps: acquiring a vibration signal; performing wavelet packet decomposition on the vibration signal to obtain a plurality of sub-band wavelet packet nodes; determining a fixed node energy ratio and a wavelet packet Shannon entropy in the plurality of sub-band wavelet packet nodes; and detecting the steel rail based on the fixed node energy ratio and the wavelet packet Shannon entropy. The system comprises a transmitter, a transducer, a filter, a sensor, a receiver, a data transmission module, a display terminal and a power supply module. According to the method, the vibration signals collected by the sensor at the tip of the turnout region steel rail are utilized, wavelet packet decomposition is carried out on the vibration signals, then the energy proportion of the fixed nodes and wavelet packet Shannon entropy analysis is carried out, and online detection of the turnout region steel rail breakage is achieved.


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    Titel :

    一种钢轨在线检测方法及系统


    Erscheinungsdatum :

    2024-05-10


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / B61K Andere Hilfseinrichtungen für Eisenbahnen , OTHER AUXILIARY EQUIPMENT FOR RAILWAYS / G01H MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES , Messen von mechanischen Schwingungen oder Ultraschall-, Schall- oder Infraschallwellen