Housing structure for RFID tag, installation structure for RFID tag, and communication using such RFID tag
First Claim
1. A housing structure for an RFID tag in which an RFID tag formed in a rod shape as a whole having a cylindrical antenna coil and a control section is housed in a container made of a conductive member and comprised of separable members contacting with each other by separation planes thereof, and in which said container has a flux leakage path on the separation planes for communication with electromagnetic wave by ASK (Amplitude Shift Keying) method between the RFID tag and the exterior of the container, wherein the flux leakage path extends from the vicinity of a tip of the RFID tag housed in the container to the exterior of the container.
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Accused Products
Abstract
A first object of the present invention resides in providing a novel installation structure for an RFID tag, which effectively protects the RFID tag from external stress or impact during the storage, transportation and usage, and allows communication with the external.
A second object of the present invention resides in that providing a novel installation structure for an RFID tag, which enables communication with the external even if the RFID tag is installed on a conductive member such as a metal member, and the surface thereof is covered with a protective member typically made of a metal which has an excellent strength and durability.
A third object of the present invention is to provide a communication method using an RFID tag as being surrounded by a conductive member typically made of a metal.
Even if an RFID tag 1a is housed in a container A typically made of a conductive material such as a metal having a large mechanical strength, the RFID tag 1a can communicate with an external read/write terminal 9 as mediated by leakage magnetic flux if only a flux leakage path 12 composed for example of a gap is formed in such container A.
183 Citations
19 Claims
- 1. A housing structure for an RFID tag in which an RFID tag formed in a rod shape as a whole having a cylindrical antenna coil and a control section is housed in a container made of a conductive member and comprised of separable members contacting with each other by separation planes thereof, and in which said container has a flux leakage path on the separation planes for communication with electromagnetic wave by ASK (Amplitude Shift Keying) method between the RFID tag and the exterior of the container, wherein the flux leakage path extends from the vicinity of a tip of the RFID tag housed in the container to the exterior of the container.
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7. An installation structure for an RFID tag in which a conductive member is formed with an installation groove and in which an RFID tag formed in a rod shape as a whole having a cylindrical antenna coil and a control section is installed in the installation groove,
wherein the axial direction of the RFID tag is, under this situation, installed in parallel to the bottom plane of the installation groove, wherein the surface side of the RFID tag is covered with a protective member made of a conductive material, wherein a flux leakage path made of separation planes of the conductive member and the protective member is formed for communication with electromagnetic wave by ASK (Amplitude Shift Keying) method between the RFID tag and the exterior of the container, and wherein the flux leakage path extends from the vicinity of a tip of the RFID tag housed in the container to the exterior of the protective member.
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13. A communication method using an RFID tag formed in a rod shape as a whole having a cylindrical antenna coil and a control section, as being surrounded by a conductive member and comprised of separable members contacting with each other by separation planes thereof,
wherein said conductive member is provided with a flux leakage path made of a narrow gap is formed for communication with electromagnetic wave by ASK (Amplitude Shift Keying) method between the RFID tag and the exterior of the container, and wherein the flux leakage path extends from the vicinity of a tip of the RFID tag housed in the conductive member to the exterior of the protective member, wherein communication is performed between said RFID tag and the exterior of the conductive member in utilizing leaked magnetic flux passing through the flux leakage path.
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18. A communication method for external communication by using an RFID tag formed in a rod shape as a whole having a cylindrical antenna coil and installed in an installation groove in a conductive material, the RFID tag being housed in a container,
wherein the axial direction of the installed RFID tag is, parallel to a bottom plane of the installation groove, wherein a surface of the RFID tag is covered with a protective member made of a conductive material, wherein a flux leakage path made of a narrow gap is formed for communication with electromagnetic wave by ASK (Amplitude Shift Keying) method between the RFID tag and the exterior of the container, and wherein the flux leakage path extends from the vicinity of a tip of the RFID tag housed in the container to the exterior of the protective member, and wherein communication is performed between the RFID tag and the exterior of the protective member in utilizing the flux leakage path.
Specification