Detection of derailment by determining the rate of fall
AssigneeSiemens AG Osterreich
InventorsGerhard Lueger, Michael Schmeja, Gérard Salzgeber, Christian Kitzmüller
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Abstract
A method and a device for the recognition of a derailment state of a wheel (RAD) of a rail vehicle. The acceleration of the wheel (RAD) is measured perpendicularly to a rail plane (ε) with at least one acceleration sensor (SEN), whereby from an acceleration signal (BSI) generated by the acceleration sensor (SEN) by means of simple integration (INT) over a time window of predeterminable magnitude, one determines a fall speed (FAG) of the wheel (RAD) in the direction of the rail plane (ε), and whereby on the basis of the determined fall speed (FAG), one examines whether a derailed state exists.
Claims20
A method for recognition of a derailment state of a wheel of a rail vehicle, comprising the steps of:
- measuring acceleration of the wheel perpendicularly to a rail plane with at least one acceleration sensor,
- determining a fall speed of the wheel in the direction of the rail plane from an acceleration signal generated by the acceleration sensor by means of simple integration over a time window of predeterminable magnitude, and
- determining whether a derailed state exists on the basis of only the determined fall speed.
A device for the recognition of a derailment state of a wheel of a rail vehicle, comprising:
- at least one acceleration sensor for the acquisition of acceleration of the wheel perpendicularly to a rail plane, whereby the acceleration sensor is set up with an analysis unit for the analysis of an acceleration signal that is generated by the acceleration sensor, and
- the analysis unit is so outfitted as to determine from the acceleration signal by means of simple integration over a time window of predeterminable magnitude a fall speed of the wheel in the direction of rail plane and where, on the basis of only the determined fall speed, one can examine whether a derailed state exists.
Dependencies are inferred from the claim text.