System and method for train position sensing
US9714042B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2015 |
| Grant date | Jul 25, 2017 |
| Priority date | — |
| Expiry date | Oct 8, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L25/048
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Train position is sensed using a position sensing unit having plurality of position sensors arrayed in the direction of train travel. The sensors respond to the presence and absence of a detection element on each train car, the detection element being longer than the spacing between adjacent position sensors. A confirmed count of a train car passing the position sensing unit requires detection of a series of related position sensor activations and deactivations. Alternately, the position sensing unit senses data tags on the train cars, reading unique identifiers therefrom. A list of identifiers corresponding to the car order is stored and compared to the identifiers read in order to determine train position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.