An electronic tag for smart tool cabinet

Abstract

The electronic tag for a smart tool cabinet provided by the present application includes a tag antenna, a tag chip, and a tag substrate. The tag antenna and the tag chip are arranged on the surface of the tag substrate. The tag antenna includes a radiating plate, a microstrip loading ring, and a matching load. The microstrip loading rings are distributed on both sides of the matching load. The microstrip loading rings on each side are symmetrically staggered with a double row of L-shaped resonators. The longer sides of the double row of L-shaped resonators are vertically parallel, and the shorter sides are horizontally flat. The edge of the radiating plate is connected to the metal grounding surface on the back of the tag substrate through a via. By adjusting the length of the long and short sides of the double row of L-shaped resonators of the microstrip loading ring, or the distance between the L-shaped resonators, the magnetic field distribution of the tag antenna can be adjusted, the tag signal transmission and reception strength can be changed, and the signal reading distance can be changed, which is conducive to reducing electromagnetic wave interference in the smart tool cabinet. The electronic tag provided by the present application improves the efficiency of item management and control and enhances the safety of tool use.

Description

Technical Field

[0001] The present application relates to the technical field of electronic tag identification of metal objects using ultra-high frequency RFID technology, and in particular to an electronic tag for a smart tool cabinet. Background Art

[0002] RFID, short for Radio Frequency Identification (RFI), is a communications technology commonly known as electronic tags. It uses radio signals to identify specific targets and read and write relevant data, without the need for mechanical or optical contact between the identification system and the target. RFID, an automatic identification technology that emerged in the 1990s, utilizes radio frequency signals through spatial coupling (alternating magnetic or electromagnetic fields) to achieve contactless information transmission and identification through the transmitted information. RFID technology offers unparalleled advantages in item identification and tracking, and therefore holds broad prospects in various industries, including manufacturing, retail, logistics, and transportation.

[0003] The intelligent tool cabinet provides a comprehensive protective environment with dust, damage and moisture resistance for tools in professional fields such as power systems, rail transportation, and oil exploration. It avoids safety accidents caused by taking the wrong type of insulating tools through labeling and classification, and can effectively manage insulating tools of different voltages.

[0004] However, conventional paper surface labels, flexible labels, punch-mounted labels and electronic tags are used, and anti-metal electronic tags are more commonly used to identify materials in the cabinet. Due to the complex metal structure in the cabinet, there are electromagnetic wave reflections from metal materials and absorption by non-metallic materials, resulting in attenuation of the electronic tag signal reading energy of the items. Especially when there are many metal tools in the material environment, the electronic tag recognition rate is generally low, resulting in reduced tool management efficiency in the smart tool cabinet and possible omission of tools. At present, most anti-metal tags are made of metal grounding structure, but most of them are used in non-enclosed spaces and are used to attach to the surface of metal objects. Therefore, the electromagnetic wave reflection situation is relatively simple and has little interference with the recognition rate. The smart tool cabinet is a closed metal space with complex electronic wave reflection, resulting in a reduced recognition rate. Therefore, the existing anti-metal electronic tags cannot work well on smart tool cabinets. Summary of the Invention

[0005] The present application provides an electronic tag for a smart tool cabinet. By adjusting the shape of the microstrip loading ring, the magnetic field distribution of the tag antenna can be adjusted, the tag signal transmission and reception strength can be changed, and the signal reading distance can be changed, which is beneficial to reducing electromagnetic wave interference in the smart tool cabinet and effectively solving the problem of low electronic tag recognition rate caused by electromagnetic wave reflection in existing smart tool cabinets.

[0006] The technical solutions adopted by this application to solve the above technical problems are as follows:

[0007] An electronic tag for an intelligent tool cabinet, comprising a tag antenna, a tag chip and a tag substrate, wherein the tag antenna and the tag chip are arranged on the surface of the tag substrate;

[0008] The tag antenna includes a radiating plate, a microstrip loading ring, and a matching load. The microstrip loading rings are distributed on both sides of the matching load. The microstrip loading rings on each side are symmetrically staggered with double rows of L-shaped resonators. The longer sides of the double rows of L-shaped resonators are vertically parallel and the shorter sides are horizontally flat. The edge of the radiating plate is connected to the metal ground surface on the back of the tag substrate through a via.

[0009] Optionally, the matching load is a rectangular structure with a T-shaped opening formed on one side of the short side thereof, and the label chip is located on the surface of the label substrate and is disposed at the T-shaped opening of the matching load.

[0010] Optionally, a protective coating is provided on the outer edge of the tag antenna.

[0011] Optionally, the chip is a Monza R6 chip.

[0012] Optionally, the label substrate is a high dielectric constant material.

[0013] Optionally, the radiation sheet is made of a metal material with a relative dielectric constant ranging from 1 to 1.2.

[0014] Optionally, the radiation sheet has a thickness of 10um-40um.

[0015] Optionally, the protective coating is a high-temperature anti-corrosion coating with a thickness between 20um and 40um.

[0016] The technical solution provided by this application includes the following beneficial technical effects:

[0017] The present application provides an electronic tag for an intelligent tool cabinet, comprising a tag antenna, a tag chip, and a tag substrate, wherein the tag antenna and the tag chip are arranged on the surface of the tag substrate; the tag antenna comprises a radiating plate, a microstrip loading ring, and a matching load, wherein the microstrip loading rings are distributed on both sides of the matching load, and the microstrip loading rings on each side are symmetrically staggered with a double row of L-shaped resonators, wherein the longer sides of the double row of L-shaped resonators are vertically parallel and the shorter sides are horizontally flat, and the edge of the radiating plate is connected to the metal grounding surface on the back of the tag substrate through a via. By adjusting the length of the long and short sides of the double row of L-shaped resonators in the microstrip loading ring, or the distance between the L-shaped resonators, the magnetic field distribution of the tag antenna can be adjusted, the tag signal transmission and reception strength can be changed, and the signal reading distance can be changed, which is conducive to reducing electromagnetic wave interference in the intelligent tool cabinet. The electronic tag for an intelligent tool cabinet provided in the present application is used to identify the flow process of items in the tool cabinet, improve the efficiency of item management and control, enhance the safety of tool use, and effectively solve the problem of low electronic tag recognition rate caused by electromagnetic wave reflection in existing intelligent tool cabinets. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic diagram of the structure of the electronic tag for the smart tool cabinet provided in an embodiment of the present application.

[0020] Description of reference numerals:

[0021] 1-Tag antenna, 2-Tag chip, 3-Tag substrate, 4-Metal ground plane, 5-Protective coating, 11-Radiating plate, 12-Microstrip loading ring, 13-Matching load, 14-Via. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application; it is obvious that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0023] like Figure 1, which is a schematic structural diagram of an electronic tag for a smart tool cabinet provided in an embodiment of the present application. The electronic tag for a smart tool cabinet provided in an embodiment of the present application is characterized in that it includes a tag antenna 1, a tag chip 2, and a tag substrate 3, wherein the tag antenna 1 and the tag chip 2 are arranged on the surface of the tag substrate 3;

[0024] The tag antenna 1 includes a radiating plate 11, a microstrip loading ring 12 and a matching load 13. The microstrip loading ring 12 is distributed on both sides of the matching load 13. The microstrip loading ring 12 on each side is a double-row L-shaped resonator symmetrically staggered. The longer sides of the double-row L-shaped resonators are vertically parallel and the shorter sides are horizontally flat. The edge of the radiating plate 11 is connected to the metal ground plane 4 on the back of the tag substrate 3 through a via 14.

[0025] The electronic tag for a smart tool cabinet provided in an embodiment of the present application can adjust the magnetic field distribution of the tag antenna 1 by adjusting the length of the long and short sides of the dual-row L-shaped resonators of the microstrip loading ring 12, or the distance between each L-shaped resonator, thereby changing the tag signal transmission and reception strength, and changing the signal reading distance, thereby reducing electromagnetic interference within the smart tool cabinet. Conventional anti-metal electronic tags can also adjust their directionality and transmission and reception strength, but this adjustment can cause the electronic tag's center frequency to change, resulting in an inability to receive signals transmitted by the reader / writer. However, the electronic tag provided in an embodiment of the present application can adjust its directionality and transmission and reception strength with minimal change in the center frequency.

[0026] Optionally, the matching load 13 is a rectangular structure with a T-shaped opening along one side of the short side, and the label chip 2 is located on the surface of the label substrate 3 and is arranged at the T-shaped opening of the matching load 13 .

[0027] The matching load 13 structure provided in the embodiment of the present application is a typical antenna impedance matching structure. Placing the tag chip 2 at the T-shaped opening of the matching load 13 can adjust the impedance matching between the tag antenna and the tag chip, thereby reducing the energy loss caused by electromagnetic wave reflection.

[0028] Optionally, a protective coating 5 is provided on the outer edge of the tag antenna 1 to protect the tag antenna 1 and the tag chip 2 from oxidation and corrosion, thereby preventing changes in the tag performance and extending the service life of the tag.

[0029] Optionally, the tag chip 2 uses a Monza R6 chip with adaptive tuning technology. The R6 chip can maintain stable performance on different media due to its automatic tuning technology; at the same time, the Monza R6 chip has a high industry-leading reading sensitivity of -22.1dBm, which enables it to still have good signal recognition accuracy in complex environments.

[0030] Optionally, the conventional label substrate 3 is made of PET material, but the label substrate 3 provided in the embodiment of the present application is not limited to PET material. A high dielectric constant material is selected to reduce the volume of the label and improve the applicability of the label.

[0031] Optionally, the radiation sheet 11 is made of a metal material with a relative dielectric constant ranging from 1 to 1.2.

[0032] The metal material with a relative dielectric constant range of 1-1.2 is selected because the metal materials with a dielectric constant in this range are common materials such as copper and aluminum, which can reduce the cost of the label. Since the price of most labels on the market currently ranges from 10 cents to 10 yuan, the cost range fluctuates greatly depending on the material selected. Therefore, choosing a metal material with a relative dielectric constant range of 1-1.2 can control the cost of preparing the finished product in a relatively stable state, which is convenient for better selection and use.

[0033] Furthermore, the thickness of the radiation sheet 11 is set to 10um-40um. Since the main function of the radiation sheet is to receive or radiate electromagnetic waves into space, the use of a radiation sheet with a thickness of 10um-40um is more in line with the requirements of the electroplating metal film process.

[0034] Furthermore, the protective coating 5 is a high-temperature anti-corrosion coating with a thickness of 20 μm to 40 μm, which can protect the copper or aluminum at the bottom layer to maintain its original state at high temperatures and not be corroded by corrosive agents.

[0035] The electronic tag for a smart tool cabinet provided in an embodiment of the present application includes a tag antenna 1, a tag chip 2, and a tag substrate 3. The tag antenna 1 and tag chip 2 are arranged on the surface of the tag substrate 3. The tag antenna 1 includes a radiating plate 11, a microstrip loading ring 12, and a matching load 13. The microstrip loading rings 12 are distributed on both sides of the matching load 13. The microstrip loading rings 12 on each side are symmetrically staggered, with two rows of L-shaped resonators. The longer sides of the two rows of L-shaped resonators are vertically parallel, and the shorter sides are horizontally flat. The edge of the radiating plate 11 is connected to the metal ground plane 4 on the back of the tag substrate 3 through a via 14. By adjusting the length of the long and short sides of the two rows of L-shaped resonators of the microstrip loading ring 12, or the distance between the L-shaped resonators, the magnetic field distribution of the tag antenna 1 can be adjusted, the tag signal transmission and reception strength can be changed, and the signal reading distance can be changed, which is conducive to reducing electromagnetic wave interference in the smart tool cabinet. The electronic tag for the smart tool cabinet provided in the embodiment of the present application is used to identify the flow process of items in the tool cabinet, improves the efficiency of item management and control, enhances the safety of tool use, and effectively solves the problem of low electronic tag recognition rate caused by electromagnetic wave reflection in existing smart tool cabinets.

[0036] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that an article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0037] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand and implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

[0038] It should be understood that the present application is not limited to the contents described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. An electronic tag for a smart tool cabinet, characterized in that: It comprises a tag antenna (1), a tag chip (2) and a tag substrate (3), wherein the tag antenna (1) and the tag chip (2) are arranged on the surface of the tag substrate (3); The tag antenna (1) includes a radiation plate (11), a microstrip loading ring (12) and a matching load (13), wherein the microstrip loading ring (12) is distributed on both sides of the matching load (13), and the microstrip loading ring (12) on each side is a double-row L-shaped resonator symmetrically staggered, wherein the longer sides of the double-row L-shaped resonators are vertically parallel and the shorter sides are horizontally flat, and the edge of the radiation plate (11) is connected to the metal ground plane (4) on the back of the tag substrate (3) through a via (14); The matching load (13) is a rectangular structure with a T-shaped opening formed on one side of the short side. The label chip (2) is located on the surface of the label substrate (3) and is arranged at the T-shaped opening of the matching load (13). The label substrate (3) is a high dielectric constant material; The radiation sheet (11) is made of a metal material with a relative dielectric constant ranging from 1 to 1.

2.

2. The electronic tag for a smart tool cabinet according to claim 1, characterized in that: A protective coating (5) is provided on the outer edge of the tag antenna (1).

3. The electronic tag for a smart tool cabinet according to claim 1, characterized in that: The tag chip (2) is a Monza R6 chip.

4. The electronic tag for a smart tool cabinet according to claim 1, characterized in that: The radiation sheet (11) has a thickness of 10 μm to 40 μm.

5. The electronic tag for a smart tool cabinet according to claim 2, characterized in that: The protective coating (5) is a high-temperature anti-corrosion coating with a thickness between 20 μm and 40 μm.

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