Rfid tag installing structure, rfid tag installing method and rfid tag communication method

• US 20040052034A1
• Filed: 02/24/2003
• Published: 03/18/2004
• Est. Priority Date: 07/17/2000
• Status: Active Grant

• Current Assignee: Hanex Co., Ltd. (Vertex Corp.)
• Original Assignee: Hanex Co., Ltd. (Vertex Corp.)
• Inventors: Hyodo, Nakamaro, Senba, Fujio, Uchiyama, Tomoki, Kida, Shigeru
• Granted Patent: US 6,897,827 B2
• Time in Patent Office: Days
• US Class Current: 361/600
• CPC Class Codes: G06K 19/041 Constructional details G06K19/06 takes precedence
• 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 19/07758 arrangements for adhering the record carrier to further objects or living beings, functioning as an identification tag
• 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
• CPC Class Codes: G06K 19/07779 the inductive antenna being a coil
• CPC Class Codes: G06K 19/07781 the coil being fabricated in a winding process
• CPC Class Codes: H01Q 1/2225 used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 7/08 Ferrite rod or like elongated core

Abstract

An RFID tag installing structure for installing a micorminiaturized RFID tag having a cylindrical antenna coil to a conductive member, an RFID installing method, and communication method are disclosed An RFID tag (1) having a cylindrical antenna coil (2) and shaped into a rod is characterized in that the axial direction of the RFID tag (1) is parallel to the installation surface composed of the bottom surface (7a) of an installation groove (7) made in a conductive member (5) and is in contact with the installation surface.

Claims

1. An installation structure for an RFID tag in which an RFID tag having an antenna coil and a control section is installed to a conductive member, said RFID tag having a cylindrical antenna coil to thereby have as a whole a rod shape, and being installed so as to direct the axial direction thereof in parallel to the installation plane of said conductive member, and so as to approximately contact with such installation plane.

2. The installation structure for an RFID tag as claimed in claim 1, wherein said conductive member has in the surface portion thereof a top-opened installation groove, and said RFID tag is installed within such groove so as to direct the axial direction thereof in parallel to the installation plane comprising the bottom plane of such groove.

3. The installation structure for an RFID tag as claimed in claim 1 or 2, wherein said RFID tag is installed so as to keep a distance of 10 μ

m to 5 mm away from the installation plane of said conductive member.

7. The installation structure for an RFID tag as claimed in any one of claims 1 to 6, wherein the surface side of said RFID tag installed to said conductive member is covered with a protective member made of a non-conductive material.

8. The installation structure for an RFID tag as claimed in any one of claims 1 to 7, wherein said RFID tag performs communication based on the amplitude shift keying system.

4. An installation structure for an RFID tag in which an RFID tag having an antenna coil and a control section is installed to a conductive member, said conductive member having in the surface portion thereof an installation groove, said RFID tag having a cylindrical antenna coil to thereby have as a whole a rod shape, and being installed so as to direct the axial direction thereof oblique to the bottom plane of said installation groove.

5. The installation structure for an RFID tag as claimed in claim 4, wherein said RFID tag in an installed state within said installation groove is protected on the lateral plane and/or plane opposing to the installation plane thereof with a protective member made of a conductive material.

6. The installation structure for an RFID tag as claimed in claim 5, wherein said protective member has in the surface portion thereof a top-opened housing portion, and said RFID tag is housed within such housing portion to thereby protect the lateral plane and/or plane opposing to the installation plane of such tag.

9. A method for installing an RFID tag having an antenna coil and a control section to a conductive member, comprising the steps of:

housing said RFID tag in a top-opened housing portion formed in the surface portion of a protective member made of a conductive material,

said RFID tag having a cylindrical antenna coil to thereby have as a whole a rod shape; and

housing said protective member in a top-opened installation groove formed in the surface portion of said conductive member so as to direct the opened top of such housing portion to the opened top of such installation groove, and so as to direct the axial direction of such RFID tag in parallel to or oblique to the bottom plane of such installation groove.

10. A communication method using an RFID tag having an antenna coil and a control section as being installed to a conductive member, comprising the steps of:

installing said RFID tag, having a cylindrical antenna coil to thereby have as a whole a rod shape, so as to direct the axial direction of such tag in parallel to the installation plane of such conductive member, and so as to approximately contact with such installation plane; and

performing communication using such RFID tag mediated by magnetic flux formed in a space above the installation plane of said conductive member.

11. A communication method using an RFID tag having an antenna coil and a control section as being installed to a conductive member, comprising the steps of:

forming an installation groove in the surface portion of said conductive member;

installing said RFID tag, having a cylindrical antenna coil to thereby have as a whole a rod shape, so as to direct the axial direction of such tag in parallel to the bottom plane of such installation groove and so as to approximately contact therewith, or oblique to such bottom plane; and

performing communication using by such RFID tag mediated by magnetic flux formed in a space above the installation plane of said conductive member.