Method and system for automatically locating end of train devices
US7467032B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2006 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Apr 28, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L2205/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An end of train unit includes a positioning system such as a GPS receiver and is configured to transmit a message including the EOT unit's location when the EOT unit detects a loss of air pipe pressure and/or it is tipped over and/or a low battery condition is detected. In highly preferred embodiments, the EOT unit periodically re-transmits the message until an acknowledgment message is received. In some embodiments, information from the positioning system is used to create a signal as a substitute for a motion sensor. In other embodiments, information from the positioning system is used to determine the speed of the end of the train. End of train unit tracking is also performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.