The invention relates to improvement of a rail transit technology, in particular to an intelligent monitoring and defect positioning system and method for a long-distance steel rail, which improve the accuracy of an existing detection system, can accurately measure a rail damage point and improve the positioning precision of a broken rail. The system comprises an ultrasonic guided wave sending module, an ultrasonic guided wave receiving module, a communication module and a terminal, the ultrasonic guided wave sending module comprises an ARM control chip, an MOS drive circuit, a full-bridge circuit, a pulse transformer and an ultrasonic sensor; and the ARM control chip is connected with the MOS driving circuit, the full-bridge circuit comprises power MOS tubes Q1, Q2, Q3 and Q4, the MOS driving circuit is respectively connected to grid electrodes of the power MOS tubes Q1, Q2, Q3 and Q4, drain electrodes of the power MOS tubes Q1 and Q3 are connected with a power supply VCC, source electrodes of the power MOS tubes Q2 and Q4 are connected with a digital ground GND, and a source electrode of the power MOS tube Q1 and a drain electrode of the power MOS tube Q2 are respectively connected with one end of a primary side coil of the pulse transformer.

    本发明涉及轨道交通技术的改进,特别涉及一种长距离钢轨智能监测与缺陷定位系统及定位方法,提高了现有检测系统的准确度,并能够精准的测量出铁轨损伤点,提升了断轨的定位精度;包括超声导波发送模块、超声导波接收模块、通信模块和终端;所述超声导波发送模块包括ARM控制芯片、MOS驱动电路、全桥电路、脉冲变压器和超声波传感器;所述ARM控制芯片与MOS驱动电路连接,全桥电路包括功率MOS管Q1、Q2、Q3和Q4,MOS驱动电路分别接在功率MOS管Q1、Q2、Q3和Q4的栅极上,功率MOS管Q1和Q3的漏极连接电源VCC,功率MOS管Q2和Q4的源极连接数字地GND,功率MOS管Q1的源极和功率MOS管Q2的漏极分别与脉冲变压器的一次侧线圈的一端相连。


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    Title :

    Intelligent monitoring and defect positioning system and method for long-distance steel rail


    Additional title:

    一种长距离钢轨智能监测与缺陷定位系统及定位方法


    Contributors:
    FENG AO (author) / YAO WENQING (author) / RAO FENG (author)

    Publication date :

    2021-09-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B61K Andere Hilfseinrichtungen für Eisenbahnen , OTHER AUXILIARY EQUIPMENT FOR RAILWAYS / G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES



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