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RFID tag equipped with RFID boradband protective metal member

A technology of RFID tags and metal parts, applied in the field of RFID tags, can solve the problems of lack of convenience of RFID tags

Inactive Publication Date: 2011-09-28
HITACHI SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In response to such demands, if protective metal parts are individually prepared for each frequency band of the RFID tag, there are problems in terms of cost and installation space, and there are problems such as lack of convenience in the application of the RFID tag.

Method used

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  • RFID tag equipped with RFID boradband protective metal member
  • RFID tag equipped with RFID boradband protective metal member
  • RFID tag equipped with RFID boradband protective metal member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] pass Figure 1 to Figure 6 , the first embodiment of the present invention will be described.

[0086] figure 1 It is a top view of an RFID tag with a protective metal part according to the first embodiment of the present invention, figure 2 show figure 1 The B-B' profile. in addition, Figure 3A It shows the state in which the RFID tag with the protective metal part is unfolded and disassembled. The RFID tag with protective metal parts has a three-layer structure of a protective metal plate 1 on the surface, a metal substrate 2 on the bottom layer, and an insulating layer 3 in the middle. The protective metal plate 1 has one or more slits 11 extending parallel to the middle in the length direction of the metal plate. In the slit 11, an insulating space by air or an insulating layer or an insulating film filled with an insulating material or the like (hereinafter, these are simply referred to as insulating coating) is provided. In other words, the width of the s...

Embodiment 2

[0122] Next, a second embodiment of the present invention will be described.

[0123] In the protective metal part of the antenna of the present invention, in the communication electromagnetic waves of LF and HF, the insulating properties of the slits of the metal arm portion with the slits can allow the transmission of electromagnetic waves. In addition, in UHF and microwave communication electromagnetic waves, regarding the size of the antenna structure, for example, the long side of the metal part resonates in the UHF communication electromagnetic wave, and the short side resonates in the microwave to improve sensitivity. Such a common protective metal piece can be made.

[0124] According to the second embodiment of the present invention, the outer dimension of the axial direction of the protective metal body 1 is set to the dimension of the dipole antenna or the dimension of the electromagnetic wave resonance mode.

[0125] For example, in the Figure 5 When Du is the e...

Embodiment 3

[0137] In Embodiments 1 and 2, one of a plurality of RFID tag inserts corresponding to a wide frequency band from LF to microwave is provided in an insertion hole in an insulating layer to achieve common use. In contrast, two antennas can also be selected in the insulating layer at the same time, that is, from Figure 3B Select one antenna from each of the "1st frequency band group" and "2nd frequency band group" of "Common Classification Example 1" shown, or select one antenna from "Shared Classification Example 2" of "Rod Antenna Band" and "Coil Antenna Band" "Select one antenna respectively, and store the plug-ins of these two antennas in a protective metal piece at the same time.

[0138] As a third embodiment of the present invention, using Figure 7A ~ Figure 7B , to describe the structure in which the inserts of the above two antennas are housed in one protective metal part at the same time.

[0139] Figure 7A It is a perspective view showing the appearance of the R...

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PUM

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Abstract

The invention discloses an RFID tag equipped with an RFID boradband protective metal member, wherein RFID inserts or other plug-in elements can be well protected. The electromagnetic wave of LF and HF bands will be reflected on the surface of a metal plate due to eddy current. Therefore, the slit-shaped cut is performed on metal plates and the lower part thereof is equipped with an insert. On the other hand, for the electromagnetic wave of UHF and microwaves, the size of metal plates are set in such a way that the metal plates will resonate at the frequency thereof and are high in sensitivity. Then metal members are protected by the metal plates and various inserts are placed therein. Therefore, corresponding metal tags correspondent with the multipal frequencies are realized.

Description

technical field [0001] The present invention relates to an RFID tag equipped with a wide frequency band for RFID (radio frequency identification) to protect metal parts, and in particular to an RFID tag capable of being used in wide frequency bands of LF (low frequency), HF (high frequency), UHF (ultra high frequency) and microwave band Besides, it is an RFID tag to protect metal fittings to improve electrical and mechanical impact resistance. Background technique [0002] Generally speaking, an RFID tag is formed by adding a protective film, an adhesive for installation, and a mounting part to an insert. The insert is formed by connecting an IC chip with identification information such as an ID number built into an integrated circuit. Antenna, and a base material integrally mounted with the antenna, through the IC chip, antenna, and mounting hardware, externally communicate identification information such as ID numbers with a reader / writer as a wireless means. [0003] Som...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/077
Inventor 山内繁山方茂肉户弘明森本裕文
Owner HITACHI SYST