System and method for locating a target using RFID
US7787886B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2004 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Jan 13, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wireless system and method for determining the location of a fixed or mobile target configured to have a transponder on the target, a transceiver monitoring the target location, communicating between the transponder and transceiver, and a processor for finding the target by virtual triangulation based on values of received position information. The processor is determines virtual triangulation based on successive values of the position information using at least three points P1, P2 and P3 of the transponder respective of the transceiver. The present invention discloses methods for finding with virtual triangulation by: (1) finding with virtual triangulation by generating position information in real-time, in the case of (i) stationary and moving target, and or (ii) in the case of the presence of obstacles; (2) finding with virtual triangulation relating to the average speed of the motion of operator; and or (3) finding with simplified virtual triangulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.