Method for monitoring items passing through an entry/exit opening in a delimited space and apparatus to carry out such method
US7448545B2 · kind B2 · utility
0Cited by
3References
20Claims
0Family size
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Key dates
| Filing date | Jun 26, 2006 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Feb 17, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V15/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for monitoring items passing through an entry/exit opening in a delimited space, comprising: Control means (5) are provided to continuously store and/or update the time-based detection events of the transponders and the time-based variation events of the signal transmitted by the sensors (3, 4), said control means (5) being adapted to compare said time-based signal-variation events to determine an opening passing-through time interval (T), and to compare the time-based detection events of the transponders with the passing-through time interval (T) to determine the transponders that have passed through the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.