The invention discloses an online rail fault diagnosis system and method. The system comprises a high-frequency AC (alternating-current) excitation source, a clamping mechanism, a current sensor, a filtration and analog-to-digital conversion module and an embedded industrial personal computer, wherein the high-frequency AC excitation source is used for producing a sinusoidal AC excitation signal sent to the clamping mechanism; the clamping mechanism is clamped at a steel rail, a turnout switch rail or a movable point rail of a railway and used for sending the excitation signal to the steel rail, the turnout switch rail or the movable point rail of the railway; the current sensor is used for detecting the high-frequency sinusoidal current signal from the steel rail, the turnout switch rail or the movable point rail and sending the signal into the filtration and analog-to-digital conversion module; the filtration and analog-to-digital conversion module performs filtration and then analog-to-digital conversion on the high-frequency sinusoidal current signal and sends the signal subjected to analog-to-digital conversion into the embedded industrial personal computer; the embedded industrial personal computer performs fault judgment on the received signal through fast Fourier transform. With the adoption of the online rail fault diagnosis system and method, online detection of cracks of key equipment, namely, the steel rail, the turnout switch rail and the movable point rail, of the railway is realized.
Online rail fault diagnosis system and method
2015-06-10
Patent
Electronic Resource
English
IPC: | B61K Andere Hilfseinrichtungen für Eisenbahnen , OTHER AUXILIARY EQUIPMENT FOR RAILWAYS |
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