Wave-shaped electronic tag for textile tracking
The textile RFID tag designed by coupling the wavy metal wire with the near-field module solves the problems of complex manufacturing and high cost of traditional textile RFID tags, and realizes efficient and low-cost textile tracking, which is suitable for a variety of application scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional textile RFID tag manufacturing processes are complex and costly, and it is difficult to achieve continuous production. Existing metal wire embedding solutions have low production efficiency and are easily affected by deformation.
By employing a wavy metal wire coupling design with the near-field module, and with the far-field antenna directly or indirectly sewn into the fabric layer, combined with the near-field coupling module and cover layer encapsulation, low-cost and high-efficiency textile tracking can be achieved.
It increases production efficiency by 40% and reduces the cost per label by 60%, making it suitable for large-scale tracking applications in clothing, medical textiles, and industrial linens.
Smart Images
Figure CN224122988U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic tag technology, specifically a wave-shaped 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 wavy electronic tag for textile tracking. Through the coupling design of the wavy metal wire and the near-field module, it realizes a low-cost and high-efficiency textile tracking function, 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 wavy electronic tag for textile tracking. Through the coupling design of the wavy metal wire and the 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 wave-shaped electronic tag for textile tracking, comprising a fabric layer, a near-field coupling module, a far-field antenna, and a cover layer. The far-field antenna is disposed inside the fabric layer, 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 wave-shaped metal wire with a length of 8cm to 15cm. 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 wavy metal wire made of multiple strands of stainless steel or copper wire.
[0008] Far-field antennas are sewn or woven directly or indirectly into the fabric layer.
[0009] The diameter of the straight metal wire is 0.1mm to 0.3mm.
[0010] The near-field coupling module contains a UHF RFID chip operating in the 860MHz to 960MHz frequency band and a near-field antenna.
[0011] The near-field antenna is a gold-plated copper conductor antenna.
[0012] The dimensions of the near-field coupling module are 2mm~4mm×2mm~4mm.
[0013] The thickness of the near-field coupling module is 0.4mm × 1mm.
[0014] The near-field coupling module is a module with a high-performance EMC epoxy material shell.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] Simple structure: The wavy metal wire combined with the midpoint coupling design breaks through the limitations of traditional antenna shapes. The wavy design can achieve a better reading angle and corresponding capabilities at the same reading distance while meeting the coupling function, thereby improving reading efficiency and user experience.
[0017] High production efficiency: Metal wires are directly integrated into the textile process, avoiding secondary processing, and can produce a large number of products in a short time.
[0018] Low cost: The manufacturing cost is reduced by more than 60% compared to traditional flexible labels, and the material utilization rate is more than 80%.
[0019] Wide range of applications: Suitable for large-scale tracking applications such as clothing, medical textiles, and industrial linens. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .
[0021] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .
[0022] Explanation of reference numerals in the attached figures:
[0023] 1. Fabric layer, 2. Near-field coupling module, 3. Far-field antenna, 4. Covering layer. Detailed Implementation
[0024] The present invention will now be further described with reference to the accompanying drawings.
[0025] See Figures 1-2This utility model provides a wavy electronic tag for textile tracking, including a fabric layer 1, a near-field coupling module 2, a far-field antenna 3, and a cover layer 4. The far-field antenna 3 is disposed inside the fabric layer 1, and the near-field coupling module 2 is disposed near the midpoint of the far-field antenna 3 and capacitively coupled to it. The far-field antenna 3 is a wavy metal wire with a length of 8cm to 15cm. The near-field coupling module 2 and a portion of the far-field antenna 3 nearby are encapsulated together in the cover layer 4.
[0026] The far-field antenna 3 is a wavy metal wire made of multi-strand stainless steel wire or multi-strand copper wire.
[0027] The far-field antenna 3 is directly or indirectly sewn or woven into the inside of the fabric layer 1.
[0028] The diameter of the straight metal wire is 0.1mm to 0.3mm.
[0029] The near-field coupling module 2 contains a UHF RFID chip with a working frequency band of 860 MHz to 960 MHz and a near-field antenna.
[0030] The near-field antenna is a gold-plated copper conductor antenna.
[0031] The dimensions of the near-field coupling module 2 are 2mm~4mm×2mm~4mm.
[0032] The thickness of the near-field coupling module 2 is 0.4mm × 1mm.
[0033] The near-field coupling module 2 is a module with a high-performance EMC epoxy material shell.
[0034] Working principle:
[0035] A roll of multi-strand straight metal wire is integrated parallel to the long side of fabric layer 1 through sewing, weaving, or hot pressing to form a continuous wavy line shape, forming the far-field antenna 3. The metal wire is cut to lengths of 8cm to 15cm to meet the reading distance requirements of different customer scenarios. Integrating the entire roll of metal wire directly before cutting can improve production efficiency by 1 / 3. The 8cm to 15cm cut length is the optimal resonant length; after rigorous testing, performance is best within this range, with a reading distance of up to 6 meters. A near-field coupling module 2 is attached near the center of each cut metal wire segment, and electrical connection is achieved through pulsed current or hot melt adhesive. The near-field coupling module 2 used in this invention operates at a frequency of 860MHz to 960MHz. The near-field coupling module 2 and a portion of the nearby far-field antenna 3 are then encapsulated within a cover layer 4 through hot pressing or ultrasonic welding, forming a two-layer fabric bonding.
[0036] Finally, the two layers of fabric are heat-pressed together to form the cover layer 4, completing the encapsulation. Tests show that this method improves production efficiency by more than 40% compared to traditional processes, and reduces the cost per label by 60%.
[0037] The near-field coupling module 2 is manufactured by simultaneously injection molding the chip and the corresponding near-field antenna into the module housing. The two connection points of the chip are electrically connected to the near-field antenna, forming a closed loop, which allows it to operate at UHF frequencies. Furthermore, the near-field coupling module 2 can be mass-produced stably, with dimensions ranging from 2mm to 4mm in side length and 0.4mm to 1mm in thickness, and its shape is not limited to square.
[0038] The shell of the near-field coupling module 2 is made of high-performance EMC epoxy material, which has high airtightness and high strength, thus significantly improving the stability of the near-field module and ensuring that the module shell will not crack or deform during use.
[0039] There are no electrical connection solder joints on the outside of the module housing. The near-field coupling module 2 itself has RFID read / write functionality (at a distance of 5cm and a power of 30dBm). The near-field antenna inside the near-field coupling module 2 uses a gold-plated copper conductor and is attached to the frame inside the module. The chip is a UHF RFID chip that conforms to ISO1800-6 international ultra-high frequency standards. The near-field module must work together with the far-field antenna to achieve the various functional requirements for the use of passive UHF RFID washing tags. Through the electric field coupling between the near-field coupling module 2 and the far-field antenna 3 in the external UHF 860MHz~960MHz frequency band, a reading distance of 6 meters or more can be achieved. By activating the chip under UHF ultra-high frequency, various data exchange functions of the UHF RFID chip can be realized, achieving the purpose of long-distance data communication.
[0040] In this invention, the far-field antenna 3 is coupled to the near-field coupling module 2. The principle behind this design is that the label may be subjected to impact or twisting during washing, and the washing label is less likely to experience excessive physical displacement or other damage that could lead to poor overall performance. This significantly reduces the defect rate.
[0041] The above are merely preferred embodiments of this utility model, intended only to aid in understanding the method and core concept of this application. The scope of protection of this utility model is not limited to the above embodiments; all technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the scope of protection of this utility model.
[0042] This invention addresses the shortcomings of existing technologies that use flexible etched antennas or printed antennas on substrates, which result in complex manufacturing processes and high costs, as well as the need for special pre-processing of far-field antennas for embedded antennas. By pre-sewing a whole roll of far-field antennas into the fabric and then cutting it according to requirements, rapid production is achieved. The manufacturing process is simple, and the reading performance remains stable and efficient.
Claims
1. A wavy electronic tag for tracking textiles, characterized in that, The device includes a fabric layer (1), a near-field coupling module (2), a far-field antenna (3), and a cover layer (4). The far-field antenna (3) is disposed inside the fabric layer (1). The near-field coupling module (2) is disposed near the midpoint of the far-field antenna (3) and is capacitively coupled to it. The far-field antenna (3) is a wavy metal wire with a length of 8cm to 15cm. The near-field coupling module (2) and a portion of the far-field antenna (3) nearby are encapsulated together in the cover layer (4). The far-field antenna (3) is a wavy metal wire made of multiple strands of stainless steel wire or multiple strands of copper wire.
2. The wavy electronic tag for textile tracking according to claim 1, characterized in that, The far-field antenna (3) is directly or indirectly sewn or woven into the inside of the fabric layer (1).
3. The wavy electronic tag for textile tracking according to claim 2, characterized in that, The diameter of the wavy metal wire is 0.1mm to 0.3mm.
4. The wavy electronic tag for textile tracking according to claim 1, characterized in that, The near-field coupling module (2) is internally encapsulated with a UHF RFID chip and a near-field antenna operating in the frequency band of 860 MHz to 960 MHz.
5. The wavy electronic tag for textile tracking according to claim 4, characterized in that, The near-field antenna is a gold-plated copper conductor antenna.
6. The wavy electronic tag for textile tracking according to claim 4, characterized in that, The size of the near-field coupling module (2) is 2mm~4mm×2mm~4mm.
7. The wavy 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 wavy electronic tag for textile tracking according to claim 7, characterized in that, The near-field coupling module (2) is a module with a high-performance EMC epoxy material shell.