Method and system for determining the position of a wanted object which is positioned in a row of objects and is provided with a transponder
US6674361B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2001 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Dec 24, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q20/203
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a method and a system (1) for determining a position (d) of a wanted object (BKn) fitted with a transponder (TRn), scanning signals (INTnle, INTnri) with current strengths (Ire, Iri) changed (reduced) in steps and starting from a starting value (maximum value) are supplied to a left transmission coil (9) and separately therefrom to a right transmission coil (10), and it is determined by detection means (15, 16) when the transponder (TRn) associated with the wanted object (BKn) has changed its behavior between delivery and non-delivery of its response signal (RESn), whereupon those values V(Ii+1), V(Ik+1) of the changed (reduced) current strengths (Ii+1, Ik+1) are determined at which the transponder (TRn) has changed its behavior between delivery and non-delivery of its response signal (RESn), and the position (d) of the wanted object (BKn) is subsequently determined from said values V(Ii+1), V(Ik+1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.