Method of determining the position of a vehicle moving along a guideway
US9085310B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2011 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Apr 9, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L3/125
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of determining the position of a vehicle moving along a guideway is disclosed wherein signals from groups of transponders located beside the guideway are detected as the vehicle moves along the guideway to create a footprint in the time domain corresponding to the time the vehicle is in communication with that transponder. The transponders of each group are spaced a known distance apart from each other. An estimate of the position of the moving vehicle is computed by matching the point in the time domain that bears the same geometric relationship to the footprints corresponding to the transponders of the group to a point in the spatial domain that bears a known geometric relationship with the transponders of each group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.