METHOD AND INSTRUMENTATION FOR DETECTION OF RAIL DEFECTS IN PARTICULAR RAIL TOP DEFECTS

摘要

The present invention relates to a method and an apparatus for detecting a rail defect in a railway track, particularly an upper rail fault, by measuring an axial box acceleration signal of a railway vehicle. In order to detect a rail fault, particularly a rail upper fault, Signal is used simultaneously with the vertical axis box acceleration signal. The method also includes measuring the vertical axis box acceleration of the rail vehicle, so that the longitudinal axis box acceleration signal is used simultaneously with the vertical axis box acceleration signal. Using the longitudinal axis box acceleration signal, the signal portion associated with the vibration of the set of wheels of the railway vehicle, including the bearing and shaft box 3, is removed from the vertical axis box acceleration signal, It is also desirable to filter the axial box acceleration signal to remove signal portions contributing to the oscillation of the orbit, including pads, sleepers, and ballast.