Rail local defect vehicle-mounting detection method merging with vehicle speed information and front and rear axle box acceleration information
A local defect and detection method technology, applied in the field of transportation, can solve the problems of high cost, time-consuming and labor-intensive track short-wave measurement, etc., and achieve the effect of low cost, high reliability and high application value
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[0053] Such as figure 1 The vehicle-mounted detection method for track short-wave irregularities shown includes four parts: (1) Acquisition of three-channel information, that is, the acquisition of vertical vibration acceleration of the front axle box, vertical vibration acceleration of the rear axle box, and vehicle speed information; (2) According to the geometric dimensions of the object structure of the vehicle where the equipment is installed, the fusion rule of the vehicle speed signal and the two vibration acceleration signals is established to realize the spatial positioning of the vibration acceleration; (3) Extract the time-frequency features of the fused vibration acceleration to find out the cause The time-frequency characteristics of vibration acceleration caused by track short-wave irregularities; (4) Compare and understand the time-frequency characteristics, establish the judgment rules for the existence of track short-wave irregularities, and realize the vehicle...
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