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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Reliable UHF Long-Range Textile-Integrated RFID Tag Based on a Compact Flexible Antenna Filament
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Reliable UHF Long-Range Textile-Integrated RFID Tag Based on a Compact Flexible Antenna Filament

机译：基于紧凑型柔性天线细丝的可靠的UHF远程纺织品集成RFID标签

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This paper details the design, fabrication and testing of flexible textile-concealed Radio Frequency Identification (RFID) tags for wearable applications in a smart city/smart building environment. The proposed tag designs aim to reduce the overall footprint, enabling textile integration whilst maintaining the read range. The proposed RFID filament is less than 3.5 mm in width and 100 mm in length. The tag is based on an electrically small (0.0033 ) high-impedance planar dipole antenna with a tuning loop, maintaining a reflection coefficient less than −21 dB at 915 MHz, when matched to a commercial RFID chip mounted alongside the antenna. The antenna strip and the RFID chip are then encapsulated and integrated in a standard woven textile for wearable applications. The flexible antenna filament demonstrates a 1.8 dBi gain which shows a close agreement with the analytically calculated and numerically simulated gains. The range of the fabricated tags has been measured and a maximum read range of 8.2 m was recorded at 868 MHz Moreover, the tag’s maximum calculated range at 915 MHz is 18 m, which is much longer than the commercially available laundry tags of larger length and width, such as Invengo RFID tags. The reliability of the proposed RFID tags has been investigated using a series of tests replicating textile-based use case scenarios which demonstrates its suitability for practical deployment. Washing tests have shown that the textile-integrated encapsulated tags can be read after over 32 washing cycles, and that multiple tags can be read simultaneously while being washed.
机译：本文详细介绍了在智能城市/智能建筑环境中可穿戴应用中的柔性纺织品隐蔽式射频识别（RFID）标签的设计，制造和测试。提议的标签设计旨在减少总占地面积，从而实现纺织品集成，同时保持读取范围。提出的RFID灯丝的宽度小于3.5毫米，长度小于100毫米。该标签基于带有调谐环的电学上很小的（0.0033）高阻抗平面偶极天线，当与安装在天线旁边的商用RFID芯片匹配时，在915 MHz时反射系数保持小于-21 dB。然后将天线条和RFID芯片封装并集成到标准编织纺织品中，以实现可穿戴应用。柔性天线灯丝的增益为1.8 dBi，与解析计算和数值模拟的增益非常接近。测量了制成的标签的范围，并在868 MHz处记录了8.2 m的最大读取范围。此外，该标签在915 MHz处的最大计算范围为18 m，这比市售的较大长度和长度的洗衣标签更长。宽度，例如Invengo RFID标签。已使用复制基于纺织品的用例场景的一系列测试对建议的RFID标签的可靠性进行了研究，证明了其在实际部署中的适用性。洗涤测试表明，经过32个洗涤周期后，可以读取与纺织品结合的封装标签，并且在洗涤时可以同时读取多个标签。

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