Method and system to determine the position, orientation, size, and movement of RFID tagged objects
US8248210B2 · kind B2 · utility
19Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2009 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Apr 30, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10079
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system of determining spatial identification of an object, such as orientation, size, location, range, and/or movement, using an RFID system is disclosed. An RFID system can comprise one or more RFID reader receiving antennas that query one or more RFID tags coupled to the object. The measurement of the phase of the tag responses at the reader antennas and phase differentials as a function of distance, frequency, and time are the basis of spatial identification. The system can work with conventional Gen 2 tags and readers without modification of the tags or protocol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.