Arrangement Comprising An Object Made At Least Partially Of Metal Or Precious Metal And An RFID Indetification Device

• US 20090015431A1
• Filed: 02/03/2007
• Published: 01/15/2009
• Est. Priority Date: 03/03/2006
• Status: Active Grant

• Current Assignee: Soheil Hamedani
• Original Assignee: Soheil Hamedani
• Inventors: Hamedani, Soheil
• Granted Patent: US 9,024,763 B2
• Time in Patent Office: Days
• US Class Current: 340/825.490
• CPC Class Codes: G06K 19/02 characterised by the selection of materials, e.g. to avoid wear during transport through the machine
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: G06K 19/07771 the record carrier comprising means for minimising adverse effects on the data communication capability of the record carrier, e.g. minimising Eddy currents induced in a proximate metal or otherwise electromagnetically interfering object

Abstract

The invention relates to an arrangement including an object made at least partially of metal and/or precious metal and an RFID system, wherein the object and the RFID system are connected to one another in such a way that the transponder and the aerial of the RFID system are applied on a site of the object, on its surface, which is facing or can be caused to face an assigned reading device or are embedded into its surface in the form of an inlay, and means are provided which shield or attenuate the electrically conductive surface of the object against eddy currents induced in the conductor loop. Furthermore, the invention relates to a method for tracking and position-fixing objects of all kinds, which are made at least partially of metal and/or precious metal or are plated therewith, and into which a position-fixing device operating according to RFID technology is integrated. A transponder and, spaced apart from the latter, an aerial coupled with a reading device are disposed in or on the object at an application-specific conductive site and the transponder is shielded with respect to the conductive surface.

Claims

1. An arrangement comprising an object made at least partially of metal or precious metal and an RFID system, wherein the object and the RFID system are connected to one another in such a way that a transponder and an aerial of the RFID system are applied on a site of the object, on a surface, which is facing or can be caused to face an assigned reading device or are embedded into the surface in the form of an inlay, and means are provided which shield or attenuate the electrically conductive surface of the object against eddy currents induced in the conductor loop.

2. The arrangement according to claim 1, wherein, for the purpose of shielding, ferromagnetic particles in the form of a shielding layer, e.g. a substrate applied on the metal object, are formed over a predetermined region and orientated magnetically, which region includes the aerial structure of the transponder, as a result of which the eddy currents generated when the transponder enters into the magnetic field of a reading device are reduced.

3. The arrangement according to claim 1, wherein the object is an access card, a chip card or similar card made of precious metal with RFID technology.

4. A device according to claim 1, wherein the object is a valuable item, a work of art or suchlike made of metal or precious metal with RFID technology.

5. The device according to claim 1, wherein the object made of precious metal is set with at least one diamond, which terminates flush with the surface and which represents a marking site of the object.

8. The arrangement according to claim 1, wherein the transponder is placed into a recess of the surface of the object, an access card, and is disposed flush with the object surface.

9. The arrangement according to claim 1, wherein the transponder is on a carrier, the carrier comprises a reflector.

10. The arrangement according to claim 1, wherein the conductor loop is an aerial structure in the form of a UHF aerial, which is configured as a dipole, or an HF aerial, and which is configured as an induction loop.

11. The arrangement according to claim 1, wherein the conductor loop is an aerial structure so that radiation emitted by the aerial is bundled.

6. A method for tracking and position-fixing objects of all kinds, which are made at least partially of metal or precious metal or are plated therewith, and into which a position-fixing device operating according to RFID technology is integrated, wherein the object is produced from conductive material, metal or precious metal, or is plated therewith, and that a transponder and, spaced apart from the latter, an aerial coupled with a reading device are disposed in or on the object at an application-specific conductive site, and that the transponder is shielded with respect to the conductive surface.

7. A tracking and position-fixing device of a transponder, which comprises an electronic chip and an aerial structure, which device is provided with an object which is made at least partially of metal or precious metal or is plated therewith, the transponder being formed on an application-specific, conductive surface of the object and the transponder being disposed insulated with respect to the conductive surface.

12. (canceled)