Patent ID: 6539293
Filing Date: 2003-03-25
Classification: B61K,B61L

Abstract:
A method of monitoring a bogie of a multi-axle vehicle guided on a running surface, the method which comprises:detecting respective accelerations of at least two axles of the bogie with acceleration sensors; subjecting sensor signals received from the acceleration sensors to a Fourier transformation in FFT modules provided in an adaptation stage and generating frequency profiles with the FFT modules; selecting one or more comparison operations from the following group: comparing the frequency profiles, in a first check module, to one another, to originally measured frequency profiles, and/or to a correspondingly selected standard profile; comparing the frequency profiles, in a second check module, to respective average value profiles formed in storage stages; and comparing the average value profiles formed in storage stages directly to each other, to originally measured frequency profiles, and/or to a correspondingly selected standard profile; and comparing determined deviations to threshold values, and accordingly delivering message signals to systems serving to control the vehicle.