US 8,577,546 B2 · Method and device for monitoring the driving behavior of a railway vehicle

Abstract

A method for monitoring the driving behavior of a railway vehicle, wherein at least one measurement variable characterizing the vibrational behavior of at least one wheel set of the railway vehicle, is captured by at least one sensor providing a corresponding measurement signal. The method includes the steps of identifying at least one significant event or a combination of multiple significant events within the time trace of the measurement signal and identifying the event time at which the significant event took place, deriving the frequency from the time trace of the measurement signal starting from the event time, comparing the derived frequency to at least one stored reference frequency, evaluating the vibrational behavior of the wheel set as a function of the deviation of the derived frequency from the at least one stored reference frequency.

Claims18

Dependent claims

A method for monitoring the driving behavior of a rail vehicle, the method comprising:

identifying at least one significant event within a time profile of a measurement signal generated by at least one sensor measuring at least one measurement variable characterizing vibration behavior of at least one wheel set of the rail vehicle, wherein during the at least one significant event, the measurement variable exceeds or undershoots a predefined threshold value;
identifying an event time at which the identified at least one significant event took place;
forming a frequency response from the time profile of the measurement signal from the identified event time onward, wherein the frequency response is formed for a defined time period (ta) starting from the identified event time;
comparing the formed frequency response with at least one stored reference frequency response;
and
evaluating oscillation behavior of the wheel set as a function of a deviation of the formed frequency response from the at least one stored reference frequency response.

3 more elements

A device for monitoring the driving behavior of a rail vehicle, the device comprising:

at least one sensor supplying a measurement signal corresponding to at least one measurement variable characterizing vibration behavior of at least one wheel set of the rail vehicle;
a signal capturing and evaluation device that identifies at least one significant event within a time profile of the measurement signal, wherein during the at least one significant event, the measurement variable exceeds a predefined minimum value and identified an event time at which the at least one significant event took place, forms a frequency response from the time profile of the measurement signal from the identified event time onward, wherein the frequency response is formed for a defined time period (ta) starting from the identified event time, compares the formed frequency response with at least one stored reference frequency response, and evaluates the oscillation behavior of the wheel set as a function of a deviation of the formed frequency response from the at least one stored reference frequency response.

Dependencies are inferred from the claim text.

Method and device for monitoring the driving behavior of a railway vehicle

Life of this patent

Method and device for monitoring the driving behavior of a railway vehicle

Life of this patent

Abstract

Claims18