Linear electronic tag for textile tracking

Abstract

The utility model relates to the technical field of electronic tags, in particular to a linear electronic tag for textile tracking and a preparation method of the linear electronic tag. According to the linear electronic tag, a linear metal wire is directly used as a far-field antenna to be integrated in cloth and is coupled with a near-field module; compared with the prior art, the high reading distance and performance can be achieved without improving the shape of the far-field antenna, the production efficiency is improved and the cost is reduced in the mode that the far-field antenna is cut and the coupling module is installed, the technology is more simplified, operation is easy, the method is suitable for large-scale stable production, and development of the field is greatly promoted.

Description

Technical Field

[0001] This utility model relates to the field of electronic tag technology, specifically a linear electronic tag for tracking textiles. Background Technology

[0002] Textile electronic tags are electronic tags made using RFID (Radio Frequency Identification) technology, primarily used for the identification and management of textiles and clothing. These tags store and transmit data via radio signals, enabling automatic identification and tracking of textiles.

[0003] Traditional RFID tags for textiles typically employ flexible etched or printed antennas, which are complex and costly to manufacture. Furthermore, some existing technologies attempt to embed metal wires into textiles as antennas, but this requires processing the metal wires into special shapes (such as spirals or bends) to achieve UHF band performance, leading to low production efficiency and susceptibility to deformation. Additionally, traditional processes require separate steps for antenna molding and chip installation, making continuous production difficult.

[0004] Based on the above reasons, this utility model designs a linear electronic tag for textile tracking. By directly fixing a linear metal wire to the fabric and coupling it with a near-field module, a low-cost and high-efficiency textile tracking function is achieved, while significantly improving production efficiency. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a linear electronic tag for textile tracking. By directly fixing a linear metal wire to the fabric and coupling it with a near-field module, a low-cost and high-efficiency textile tracking function is achieved, while significantly improving production efficiency.

[0006] To achieve the above objectives, this utility model provides a linear electronic tag for textile tracking, comprising a fabric, a near-field coupling module, a far-field antenna, and a cover layer. The far-field antenna is disposed inside the fabric, and the near-field coupling module is disposed near the midpoint of the far-field antenna and capacitively coupled to it. The far-field antenna is a straight metal wire with a length of 12cm to 18cm without changing its shape. The near-field coupling module and a portion of the far-field antenna nearby are encapsulated together in the cover layer.

[0007] The far-field antenna is a straight metal wire made of multiple strands of stainless steel wire or multiple strands of copper wire.

[0008] The far-field antenna is sewn or woven directly or indirectly into the fabric and is parallel to the long side of the fabric.

[0009] The diameter of the straight metal wire is 0.1mm-0.3mm.

[0010] The UHF RFID chip and the near field antenna are encapsulated in the near field coupling module.

[0011] The size of the near field coupling module is 2mm-4mm*2mm-4mm.

[0012] The thickness of the near field coupling module is 0.4mm*1mm.

[0013] The near field coupling module is a module with a high-performance EMC epoxy material shell.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] Simple structure: the straight metal wire can realize UHF resonance without any shape change, and the midpoint coupling design breaks through the limitation of traditional antenna shape.

[0016] Strong deformation resistance: the stress distribution of the straight structure is uniform when the fabric is bent, and the performance remains stable even if it is bent to half the length.

[0017] High production efficiency: the metal wire is directly integrated in the textile process, avoiding secondary processing, and a large number of products can be produced in a short time.

[0018] Low cost: the manufacturing cost of the traditional flexible label is reduced by more than 60%, and the material utilization rate is more than 80%.

[0019] Wide application range: suitable for large-scale tracking application scenarios such as clothing, medical textiles and industrial cloth. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structure of the utility model is shown Figure 1 .

[0021] Figure 2 The structure of the utility model is shown Figure 2 .

[0022] Figure 3 The read performance curve of the utility model is shown.

[0023] MARKED DESCRIPTION:

[0024] 1 cloth, 2 near field coupling module, 3 far field antenna, 4 cover layer. DETAILED DESCRIPTION

[0025] The utility model will be further described in combination with the drawings.

[0026] Referring to Figures 1 to 3The utility model provides a linear electronic tag for textile tracking, including cloth 1, near field coupling module 2, far field antenna 3 and cover layer 4, the inside of cloth 1 is provided with far field antenna 3, the midpoint of far field antenna 3 is provided with near field coupling module 2 with its mutual electric capacity coupling, far field antenna 3 is the linear metal wire of 12cm~18cm length without shape change, and the length of 12cm~18cm is the best resonant length, and after strict test, the performance is best in this range, and the reading distance can reach 6 meters, even if far field antenna 3 is bent to half length (6cm~9cm) in the use process, the influence to the reading performance of UHF is also little, and can also keep at about 5 meters (such as Figure 3 Indicated).

[0027] Near field coupling module 2 and the part of far field antenna 3 near it are encapsulated in cover layer 4.

[0028] Far field antenna 3 is the linear metal wire of multiple strands of stainless steel wire or multiple strands of copper wire.

[0029] Far field antenna 3 is directly or indirectly sewn or knitted and fixed in the inside of cloth 1, and parallel to the long side of cloth 1.

[0030] The diameter of linear metal wire is 0.1mm~0.3mm.

[0031] UHF RFID chip and near field antenna are encapsulated in near field coupling module 2.

[0032] The size of near field coupling module 2 is 2mm~4mmx2mm~4mm.

[0033] The thickness of near field coupling module 2 is 0.4mmx1mm.

[0034] Near field coupling module 2 is the module of high-performance EMC epoxy material shell.

[0035] A preparation method of a linear electronic tag for textile tracking, comprising the following steps:

[0036] S1, a whole roll of linear metal wire is taken as far field antenna 3, and is directly integrated on cloth 1 through sewing, knitting or hot-pressing process, and forms parallel linear array with the long side of cloth 1.

[0037] S2, the linear metal wire is cut off at a length interval of 12cm~18cm to meet the reading distance required by different customer use scenarios.

[0038] S3, near field coupling module 2 is automatically attached near the midpoint position of each metal wire after cutting in S2, and is electrically connected through pulse current or hot melt glue.

[0039] S4, another layer of cloth is covered on the position of the near field coupling module 2 and metal wires and the packaging is completed to form the cover layer 4 by hot pressing or ultrasonic welding, so that the complete electronic tag structure is completed.

[0040] Working principle:

[0041] A plurality of straight metal wires are integrated on the cloth 1 in parallel along the long side of the cloth 1, the metal wires are cut according to the requirement in the length of 12cm-18cm, the near field coupling module 2 is attached near the center position of each metal wire after cutting, the working frequency of the selected near field coupling module 2 is 860MHz-960MHz, and finally the packaging is completed after two layers of cloth are hot-pressed to form the cover layer 4. Test shows that the production efficiency of this way is improved by more than 40% than the traditional process, and the cost of a single tag is reduced by 60%.

[0042] The manufacturing process of the near field coupling module 2 is that the chip and the corresponding near field antenna are simultaneously injection molded in the module shell. The two connecting points of the chip are electrically connected with the near field antenna, and form a closed loop, which can work under UHF frequency.

[0043] The shell material of the near field coupling module 2 is high-performance EMC epoxy material, which has high airtightness and high strength, so that the stability of the near field module can be significantly improved, and it is ensured that the module shell will not be broken and deformed during use. There is no electrically connected solder point on the outside of the module shell, and the near field coupling module 2 itself already has the reading and writing function of RFID (at a distance of 5cm, 30dbm power).

[0044] The near field antenna adopts gold-plated copper conductor and is attached in the frame inside the module, and the chip is an ISO1800-6 international UHF RFID chip. The near field coupling module 2 must work together with the far field antenna 3, so as to realize various function requirements of the passive UHF RFID washing label, and the near field coupling module 2 and the far field antenna 3 occur electric field coupling under the electric field of the external UHF 860-960MHz frequency band, so as to achieve a reading distance of 6 meters or more. By activating the chip under UHF super high frequency, various data exchange functions of the UHF RFID chip are realized, and the purpose of long-distance data communication is achieved.

[0045] The far field antenna 3 of the utility model is coupled with the near field coupling module 2, and the principle of such design is that the label will be impacted or distorted in the washing scene, and the washing label is not easy to produce excessive physical displacement and other damage to cause the overall performance to be poor. The defective rate is greatly reduced.

[0046] The above are only preferred embodiments of the present application, and are used to help understand the method and its core idea of the present application. The protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the idea of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and refinements without departing from the principle of the present application can also be considered as the protection scope of the present application.

[0047] The present application solves the problems of complex manufacturing process and high cost caused by the flexible etching antenna or printing antenna in the prior art, and the problems of multiple installation steps, easy errors, low efficiency and the like caused by the change of the antenna shape and the distribution of the embedded installation chip. The linear metal wire is directly integrated in the cloth as a far-field antenna and coupled with a near-field module, without the need for shape improvement of the far-field antenna, and a higher reading distance and performance can be achieved. The production efficiency is improved, the cost is reduced, the process is simplified, and the operation is easy, which is suitable for mass stable production and greatly promotes the development of the field.

Claims

1. A straight electronic tag for textile tracking, characterized by, It comprises cloth (1), near field coupling module (2), far field antenna (3) and cover layer (4), the inside of the cloth (1) is provided with the far field antenna (3), the midpoint of the far field antenna (3) is provided with the near field coupling module (2) that is capacitively coupled with it, the far field antenna (3) is straight metal wire of 12cm-18cm length without shape change, the near field coupling module (2) and the part of the far field antenna (3) near it are encapsulated in the cover layer (4) together.

2. The straight electronic tag for textile tracking according to claim 1, characterized in that, The far field antenna (3) is straight metal wire of multiple strands of stainless steel wire or multiple strands of copper wire.

3. The straight electronic tag for textile tracking according to claim 2, characterized in that, The far field antenna (3) is directly or indirectly sewn or knitted and fixed in the inside of the cloth (1), and is parallel with the long side of the cloth (1).

4. The straight electronic tag for textile tracking according to claim 3, characterized in that, The diameter of the straight metal wire is 0.1mm-0.3mm.

5. The straight electronic tag for textile tracking according to claim 1, characterized in that, The inside of the near field coupling module (2) is encapsulated with UHF RFID chip and near field antenna.

6. The straight electronic tag for textile tracking according to claim 5, characterized in that, The size of the near field coupling module (2) is 2mm-4mm×2mm-4mm.

7. The straight electronic tag for textile tracking according to claim 6, characterized in that, The thickness of the near field coupling module (2) is 0.4mm×1mm.

8. The straight electronic tag for textile tracking according to claim 7, characterized in that, The near field coupling module (2) is a module of high-performance EMC epoxy material shell. The near field coupling module (2) is a module of high-performance EMC epoxy material shell.

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