Method and system for automatically activating a warning device on a train
US6609049B1 · kind B1 · utility
62Cited by
46References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2002 |
| Grant date | Aug 19, 2003 |
| Priority date | — |
| Expiry date | Jul 1, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L2205/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method and system for automatically activating a train warning device that uses a positioning system such as a global positioning system (GPS) receiver or an inertial navigation system (INS) to determine the train's position. The system further includes a database containing locations of grade crossings and other locations at which a train is required to give a warning signal and what regulations govern activation of the warning device at such locations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.