Closed loop location detection system
US8872661B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2009 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Sep 15, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P90/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A closed loop location detection system for use in monitoring simultaneously the presence or absence of objects in at least two locations, comprises at least one detectable element per location and adapted to be associated with a respective object to be monitored, and at least one detecting device adapted to detect the detectable elements of the objects and so determine whether objects are present in, or absent from, all of the locations being monitored. Means are provided for causing an object to be fed to a location determined to be devoid of objects by the detecting device. Typically, the closed loop location detection system uses RFID technology, e.g. the detection device comprises at least one antenna and the detectable element comprising at least one RF tag. There may be provided one such antenna for each location to be monitored, whereby for a given location, a respective antenna detects the presence or absence of a respective tag thereby determining whether an object is present in this given location. Alternatively, the antenna can be adapted to monitor more than one location, wherein a position tag is associated with each location and means to deactivate the position tag a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.