System for tracking railcars in a railroad environment
US7826938B2 · kind B2 · utility
10Cited by
10References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2005 |
| Grant date | Nov 2, 2010 |
| Priority date | — |
| Expiry date | Sep 1, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L2205/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system determines real-time locations of railcars in a railroad environment. Railcars are equipped with at least four RFID tags. A RFID reader at a fixed location at every track branch in the environment reads the RFID tags. Railcar locations are updated for the railcars by determining the branches on which the railcars are located.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.