JP2014176077A - Rfid data carrier suitable for automobile individual management - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an RFID data carrier that does not disturb the see-through property of a transparent plate such as a window pane as much as possible in the case where the RFID data carrier is used for individual management of an automobile by pasting it to the transparent plate such as the window pane of the automobile.SOLUTION: An RFID data carrier is made up of: a transparent base with an electric insulation property formed in a plate shape; an IC chip that includes a communication circuit for communicating data by a radio wave from an external reading and writing device and a storage element for storing data in a writable and readable manner, and is attached to the base; and a conductive antenna part that is connected with the IC chip and provided on the base. The base is made of transparent material and the antenna part is made of conductive thin ribbon-like wire.

Description

  The present invention relates to an RFID data carrier, and more particularly to the configuration and structure of an RFID data carrier suitable for automobile individual management.

  2. Description of the Related Art Conventionally, as a method for managing various data related to articles such as luggage, there is a system in which a transceiver called an RFID data carrier is provided as a tag attached to or attached to an article. This system using an RFID data carrier is equipped with a reading / writing device for reading and writing information of the RFID data carrier, transmits a radio wave controlled by the controller from the antenna of the reading / writing device, and is contactless to the RFID data carrier. Read and write various data. As another use example of this system, it is also used for entrance / exit management for locking / unlocking the gate by holding the RFID data carrier over the antenna of a reading / writing device attached near the gate side of a parking lot or building entrance. .

  The structure of the RFID data carrier is such that an IC part and an antenna part, in which data is recorded and provided with a transmission / reception circuit, are mounted on a base material made of synthetic resin or the like. In addition, various pattern shapes are known for the shape of the antenna portion in order to extend the recognition distance, reduce the size, and stabilize the operation.

  When a conventional general RFID data carrier is attached to a window glass of an automobile, there is a problem that the transparency of the window glass is hindered and difficult to use.

JP 2006-186742 A JP2003-209421A

  The present invention has been made in view of the above prior art, and when an RFID data carrier is used by being attached to a transparent plate such as a glass plate, the RFID data carrier that does not obstruct the transparency in front of the transparent plate as much as possible. It is a problem to provide.

  The subject is an electrically insulating substrate, a communication circuit for communicating data by radio waves from an external read / write device, and an IC unit attached to the substrate having a storage element for storing data in a readable and writable manner. An RFID data carrier comprising a conductive antenna portion connected to the IC portion and provided on the base material, wherein the antenna portion is formed of a conductive ribbon-like wire, and the base material has a visible light transmittance Is solved by using a transparent electrically insulating substrate of 70% or more.

  Since the conductive member forming the antenna portion has a width of 0.5 mm or less and a thickness of 0.05 mm or less, the field of view of the automobile driver is not lowered.

  The mesh-like conductive film that forms the antenna portion is a mesh in which ribbon-like wires having a line width and thickness of 0.02 mm or less are arranged at intervals of 0.2 mm to 0.5 mm. Will not drop.

  The electrical insulating substrate may have a visible light transmittance of 70% or more with a wavelength of 0.36 to 0.76 μm.

  When the RFID data carrier of the present invention is used by being attached to a transparent plate such as glass, the transparency in front of the transparent plate is remarkably improved.

  Further, when the RFID data carrier of the present invention is applied to a vehicle window management system by attaching the RFID data carrier to a vehicle window glass, the transparency of the window glass of the vehicle is hardly hindered and can contribute to safe driving of the vehicle. .

1 is a schematic diagram of an RFID data carrier suitable for automobile individual management using an antenna portion formed of a conductive ribbon-like wire, which is a first embodiment of the present invention. FIG. The schematic of the RFID data carrier suitable for vehicle individual management using the antenna part formed with the electroconductive ribbon-shaped wire which is 2nd embodiment of this invention. The schematic diagram of the RFID data carrier suitable for vehicle individual management using the antenna part formed with the mesh-shaped electroconductive net | network which is 3rd embodiment of this invention.

  A first embodiment of the RFID data carrier of the present invention will be described with reference to FIG. The RFID data carrier 10 of this embodiment is formed on the surface of a very thin rectangular transparent base material 12 as shown in FIG. 1, and an IC chip 14 and a conductive material are formed at a substantially central portion of the long side of the transparent base material 12. The antenna portion 16 is formed. The antenna portion 16 is formed of a conductive ribbon-like wire having a line width of 0.5 mm or less and a thickness of 0.05 mm or less. In FIG. 1, W is the line width of the ribbon-shaped wire, L is the length of the antenna portion, and D is the width of the antenna portion. A frame-shaped portion surrounded by X and D operates as an impedance matching circuit for the IC chip 14 and the antenna unit 16. In an RFID data carrier for attaching a glass in the 900 MHz band, L is set to approximately 80 mm to 150 mm, D is set to approximately 2 mm to 8 mm, and X is set to approximately 15 mm to 45 mm.

  A second embodiment of the RFID data carrier of the present invention will be described with reference to FIG. The RFID data carrier 20 of this embodiment is formed on the surface of a very thin rectangular transparent base material 22 as shown in FIG. 1, and an IC chip 24 and a conductive material are provided at the center of the long side of the transparent base material 22. The antenna portion 26 is formed. The antenna portion 26 is formed of a conductive ribbon-like wire having a line width of 0.5 mm or less and a thickness of 0.05 mm or less. In FIG. 2, W is the line width of the ribbon-shaped wire, L is the length of the antenna section, and D is the width of the antenna section. A frame-shaped portion surrounded by X and D operates as an impedance matching circuit for the IC chip 24 and the antenna unit 26. In an RFID data carrier for attaching a glass in the 900 MHz band, L is set to approximately 80 mm to 150 mm, D is set to approximately 2 mm to 8 mm, and X is set to approximately 15 mm to 45 mm.

  A third embodiment of the RFID data carrier of the present invention will be described with reference to FIG. The RFID data carrier 30 of this embodiment is formed on the surface of a very thin rectangular transparent base material 32 as shown in FIG. 3, and an IC chip 34 and a conductive material are formed at the center of the long side of the transparent base material 32. The antenna portion 36 is formed. The mesh-like conductive net forming the antenna portion 36 is a conductor having a mesh structure in which ribbon-like wires having a line width and thickness of 0.02 mm or less are arranged at intervals of 0.2 mm to 0.5 mm. In FIG. 3, W is the line width of the ribbon-shaped wire, L is the length of the antenna portion, and D is the width of the antenna portion. A frame-shaped portion surrounded by X and Y operates as an impedance matching circuit for the IC chip 34 and the antenna unit 36. In an RFID data carrier for attaching a glass in the 900 MHz band, L is set to approximately 80 mm to 150 mm, D is set to approximately 2 mm to 8 mm, X is set to approximately 15 mm to 45 mm, and Y is set to approximately 1 mm to 6 mm.

  In FIG. 1, FIG. 2, and FIG. 3, a transparent adhesive for adhering the RFID data carrier of the present invention to a glass plate or the like on the surface of the transparent substrate where the IC chip and the antenna portion are not formed Apply. Furthermore, the adhesive surface is protected with a protective seal that can be easily peeled off.

  In FIG. 1, FIG. 2, and FIG. 3, a very thin transparent seal for protecting the IC chip and the antenna portion is attached to the surface of the transparent base on which the IC chip and the antenna portion are formed.

  The RFID data carrier of the present invention is used by being attached to an electric insulator part of an automobile such as a side visor, in addition to a windshield of a car, a rear glass, a window glass of a driver seat and a passenger seat, and a window glass of right and left of a rear seat. For the parking management system, data reading and writing devices are installed at the entrance and exit, and when the car approaches the parking entrance gate or exit gate, the data reading and writing device is activated and attached to the car Read the data recorded on the IC chip in the RFID data carrier.

  The data recorded on the IC chip in the RFID data carrier includes date / time, vehicle type, registration number, and the like.

DESCRIPTION OF SYMBOLS 10 RFID data carrier 12 Transparent base material 14 IC chip 16 Antenna part 20 RFID data carrier 22 Transparent base material 24 IC chip 26 Antenna part 30 RFID data carrier 32 Transparent base material 34 IC chip 36 Antenna part

Claims (2)

An electrically insulating transparent substrate formed in a plate shape having a visible light transmittance of 70% or more, a communication circuit for communicating data by radio waves from an external reading / writing device, and a storage element for storing data in a readable / writable manner And a conductive ribbon-like wire rod having a line width of 0.5 mm or less and a thickness of 0.05 mm or less, which is connected to the IC chip and provided on the substrate. An RFID data carrier suitable for car individual management consisting of formed antenna parts. An electrically insulating transparent substrate formed in a plate shape having a visible light transmittance of 70% or more, a communication circuit for communicating data by radio waves from an external reading / writing device, and a storage element for storing data in a readable / writable manner And an IC chip attached to the base material and a conductive ribbon-like wire rod having a line width and thickness of 0.02 mm or less, which is connected to the IC chip and provided on the base material, is 0.2 mm. An RFID data carrier suitable for automobile individual management, comprising an antenna portion formed of a conductive net arranged in a mesh at intervals of ˜0.5 mm.

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