Method and apparatus for detecting and signalling derailment conditions in a railway vehicle
US6860453B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2001 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | Jul 12, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L23/047
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A wheel (1) of a railway vehicle is associated with a vibration sensor (3) for supplying a vibration impulsive signal (V), indicative of the vibration of the wheel, to an electronic processing unit (E). This generates, based on the vibration signal (V), an impulsive surveillance signal (S) the instant value of which is increased in a manner correlated to the amplitude of each vibration impulse (I) and decreased in accordance with a predetermined law after each vibration impulse. The processing unit (E) compares the instant value of the surveillance signal (S) with a reference threshold value (T) and automatically generates an alarm signal (A) when the instant value of the surveillance signal (S) reaches or exceeds the reference threshold value (T).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.