Apparatus and method for remotely testing a passive integrated transponder tag interrogation system
US6369694B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2000 |
| Grant date | Apr 9, 2002 |
| Priority date | — |
| Expiry date | Jul 20, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10465
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A remotely testable Passive Integrated Transponder (PIT) tag interrogation system is described. The system comprises a remotely activated test PIT tag fixed within the field of the system antenna By selectively activating the test PIT tag, and determining successful receipt of the test tag identification signal during such activation, remote confirmation of proper operation of the system is achieved. The system also contains components which permit the remote detection of the antenna field by analyzing signals present in the antenna during operation. Remote detection of the natural frequency to which the antenna is tuned is also achieved by analyzing signals present in the antenna during the collapse of the electromagnetic field in the antenna when the antenna drive signal is removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.