Title:
METHOD AND SYSTEM FOR DETECTING WHEN AN END OF TRAIN HAS PASSED A POINT
Document Type and Number:
WIPO Patent Application WO2004103791
Kind Code:
A3
Abstract:
A controller determines that an end of train (EOT) has passed a point through the use of positioning systems at the head of the train (HOT) and the EOT. In a first method, the controller obtains the HOT position at a point of interest from the HOT positioning system. The controller then determines when the train has traveled a distance equal to the length of the train and then interrogates the EOT positioning system. If the difference between this position and the position reported by the HOT positioning system at the point of interest exceeds a threshold, then the EOT has passed the point. In a second method, when the HOT positioning system reaches a point of interest, the position reported by the EOT positioning system is integrated until the total distance traveled by the EOT equals the length of the train.
Inventors:
KANE MARK EDWARD
SHOCKLEY JAMES FRANCIS
HICKENLOOPER HARRISON THOMAS
SHOCKLEY JAMES FRANCIS
HICKENLOOPER HARRISON THOMAS
Application Number:
PCT/US2004/015737
Publication Date:
February 24, 2005
Filing Date:
May 19, 2004
Export Citation:
Assignee:
QUANTUM ENGINEERING INC (US)
International Classes:
B61L15/00; B61L25/02; G06F17/00; G08G1/123; B61L; (IPC1-7): G06F17/00
Foreign References:
| US6081769A | 2000-06-27 | |||
| US6480766B2 | 2002-11-12 | |||
| US4807127A | 1989-02-21 | |||
| US5817934A | 1998-10-06 | |||
| US5890682A | 1999-04-06 | |||
| US5969643A | 1999-10-19 |
Download PDF: