Location of a transponder center point
US8576114B2 · kind B2 · utility
0Cited by
12References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2011 |
| Grant date | Nov 5, 2013 |
| Priority date | — |
| Expiry date | Jan 10, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L2027/204
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a radio location system for vehicles moving along a guideway, a transmitter for energizes a transponder beside the guideway. A first detector for detects a response signal from the energized transponder to determine the transponder identification. A second detector detects a positional signal received from the transponder that is decoupled from the first signal and contains precise positional information. In one embodiment, the second detector picks up a crossover signal from a crossover antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.