技术领域technical field
本发明属于无线射频识别技术领域，具体涉及一种用于弯曲金属物体表面的柔性UHF RFID 抗金属标签。The invention belongs to the technical field of radio frequency identification, and in particular relates to a flexible UHF RFID anti-metal tag used on the surface of a curved metal object.
背景技术Background technique
射频识别（Radio Frequency Identification，RFID）技术是指应用射频识别信号对目标物进行识别。射频识别技术是一种内建无线电芯片的技术，芯片中可储存一系列信息。通常，RFID系统由电子标签、读写器和数据管理系统这三个主要部分组成。其中，天线是一种以电磁波形式把无线电收发机的射频信号功率接收或辐射出去的装置；在RFID系统中，天线分为标签天线和阅读器天线两种。标签天线的目标是将传输中的能量进出标签芯片，将芯片中的相关信息传输出去。Radio Frequency Identification (RFID) technology refers to the application of radio frequency identification signals to identify objects. Radio frequency identification technology is a technology with a built-in radio chip, which can store a series of information. Generally, an RFID system consists of three main parts: electronic tags, readers and data management systems. Among them, the antenna is a device that receives or radiates the radio frequency signal power of the radio transceiver in the form of electromagnetic waves; in the RFID system, the antenna is divided into two types: tag antenna and reader antenna. The goal of the tag antenna is to transmit the energy in and out of the tag chip and transmit the relevant information in the chip.
目前RFID技术已经逐步应用于物流仓储、交通管理、零售、军事、图书馆、食品安全、旅游、会务等多个领域，并且开始向各行各业普及。而在设备、仪器、工具等金属物体领域中，经常需要将RFID标签和金属物体有机地结合在一起使用，以达到借还、维修、保养、及安全识别的目的。At present, RFID technology has been gradually applied in many fields such as logistics warehousing, traffic management, retail, military, library, food safety, tourism, conference affairs, etc., and has begun to spread to all walks of life. In the field of metal objects such as equipment, instruments, and tools, it is often necessary to organically combine RFID tags and metal objects to achieve the purpose of borrowing, repairing, maintaining, and safe identification.
UHF RFID标签天线是靠接收到一定能量的电磁波来工作的；这些电磁波由UHFRFID阅读器通过阅读器天线发出，电磁波在空气中衰减，因此在较远距离的时候，因为电磁波不够强，不足以让UHF RFID 标签天线进行工作；而且金属容易将电磁波吸收，导致UHFRFID标签天线的阻抗特性发生变化，从而影响标签天线接收电磁波；另外，金属物体表面形状不一，圆弧弯曲或者凹凸不平的表面上难以贴附硬质基材的标签。因此，常用的UHF RFID标签不适用于表面弯曲不平的的金属物体上。The UHF RFID tag antenna works by receiving electromagnetic waves of a certain energy; these electromagnetic waves are sent out by the UHF RFID reader through the reader antenna, and the electromagnetic waves are attenuated in the air, so at a long distance, because the electromagnetic waves are not strong enough to allow The UHF RFID tag antenna works; and the metal is easy to absorb electromagnetic waves, resulting in a change in the impedance characteristics of the UHF RFID tag antenna, thereby affecting the tag antenna to receive electromagnetic waves; in addition, the surface shape of the metal object is different, and the arc is curved or the surface is uneven. Attaches labels to rigid substrates. Therefore, commonly used UHF RFID tags are not suitable for metal objects with curved and uneven surfaces.
发明内容Contents of the invention
本发明是为了克服上述现有技术中的缺陷，提供一种柔性UHF RFID抗金属标签，以解决现有UHF RFID标签使用在金属物体表面时阅读距离短、难以贴附在弯曲不平的金属物体表面等一系列问题。The purpose of the present invention is to overcome the defects in the above-mentioned prior art and provide a flexible UHF RFID anti-metal tag to solve the problem that the existing UHF RFID tag has a short reading distance when used on the surface of a metal object and is difficult to attach to the surface of a curved and uneven metal object. And so on a series of questions.
为了达到以上目的，本发明所采用的技术方案是：一种柔性UHF RFID 抗金属标签，包括标签天线和布设于标签天线下表面的柔性介质；所述标签天线呈长方形，包括第一长边、第二长边、第一宽边和第二宽边；所述标签天线上设有第一中空区、第二中空区、第一开口和第二开口；第一开口与第一中空区连通，第一开口用于固定芯片；第二开口的一端延伸至第一长边，另一端与第二中空区相通。In order to achieve the above purpose, the technical solution adopted in the present invention is: a flexible UHF RFID anti-metal tag, including a tag antenna and a flexible medium arranged on the lower surface of the tag antenna; the tag antenna is rectangular, including the first long side, The second long side, the first wide side and the second wide side; the tag antenna is provided with a first hollow area, a second hollow area, a first opening and a second opening; the first opening communicates with the first hollow area, The first opening is used to fix the chip; one end of the second opening extends to the first long side, and the other end communicates with the second hollow area.
作为本发明的一种优选方案，所述第二中空区沿第二开口的中心位置对称布设；且第二中空区与第二开口呈⊥形状。As a preferred solution of the present invention, the second hollow area is arranged symmetrically along the center of the second opening; and the second hollow area and the second opening are in a ⊥ shape.
作为本发明的一种优选方案，所述第二中空区与第一开口相连通；第一开口的宽度为0.1mm～3mm。As a preferred solution of the present invention, the second hollow area communicates with the first opening; the width of the first opening is 0.1 mm˜3 mm.
作为本发明的一种优选方案，所述第一中空区和第二中空区相互平行设置。As a preferred solution of the present invention, the first hollow area and the second hollow area are arranged parallel to each other.
作为本发明的一种优选方案，所述第二开口的宽度为0.1mm～10mm。As a preferred solution of the present invention, the width of the second opening is 0.1 mm˜10 mm.
作为本发明的一种优选方案，所述第二中空区呈长方形状，长边的长度为0.1mm～20mm，宽边的长度为0.1mm～10mm；第一中空区呈长方形状，长边的长度为0.1mm～10mm，宽边的长度为0.1mm～5mm。As a preferred solution of the present invention, the second hollow area is in the shape of a rectangle, the length of the long side is 0.1 mm to 20 mm, and the length of the wide side is 0.1 mm to 10 mm; the first hollow area is in the shape of a rectangle, and the length of the long side is The length is 0.1 mm to 10 mm, and the length of the wide side is 0.1 mm to 5 mm.
作为本发明的一种优选方案，所述柔性介质的厚度为0.1—15mm。As a preferred solution of the present invention, the thickness of the flexible medium is 0.1-15 mm.
作为本发明的一种优选方案，所述柔性介质采用泡沫海绵制成，其中泡沫海绵的材料为PVC聚氯乙烯、PMMA聚甲基丙烯酸甲酯、EVA乙烯-醋酸乙烯酯、PET聚对苯二甲酸乙二醇酯与它们的复合物等。As a preferred solution of the present invention, the flexible medium is made of foam sponge, wherein the material of the foam sponge is PVC polyvinyl chloride, PMMA polymethyl methacrylate, EVA ethylene-vinyl acetate, PET polyterephthalate Ethylene glycol formate and their complexes, etc.
作为本发明的一种优选方案，所述第一中空区至标签天线的第二长边距离为0.1mm～10mm。As a preferred solution of the present invention, the distance from the first hollow area to the second long side of the tag antenna is 0.1mm˜10mm.
作为本发明的一种优选方案，所述标签天线的长边长度为20mm～300mm；宽边的长度为5-100mm。As a preferred solution of the present invention, the length of the long side of the tag antenna is 20mm-300mm; the length of the wide side is 5-100mm.
本发明的有益效果是：本发明所述的柔性UHF RFID抗金属标签天线为长方形，其中间上方设有开口，且开口底部两边分别设有两个开口，其中间底部设有中空区，且中空区上方中间设有一个固定芯片的开口，与现有的技术相比，本发明通过特殊形状设计，以及使用特殊材料作为抗金属标签的基材，使UHF RFID天线具有较好的阅读性能和辐射面，适用于弯曲不平的金属物体表面。The beneficial effects of the present invention are: the flexible UHF RFID anti-metal tag antenna described in the present invention is rectangular, and an opening is provided above the middle, and two openings are respectively provided on both sides of the bottom of the opening, and a hollow area is provided at the bottom of the middle, and the hollow There is an opening for fixing the chip in the middle of the upper area. Compared with the existing technology, the present invention adopts a special shape design and uses a special material as the base material of the anti-metal label, so that the UHF RFID antenna has better reading performance and radiation Suitable for curved and uneven metal surfaces.
附图说明Description of drawings
图1为本发明的结构示意图。Fig. 1 is a structural schematic diagram of the present invention.
图2为本发明标签天线俯视图。Fig. 2 is a top view of the tag antenna of the present invention.
图3为本发明标签在金属表面的辐射方向图。Fig. 3 is a radiation pattern of the tag of the present invention on a metal surface.
图4 为本发明标签在金属表面的E面辐射方向图。Fig. 4 is a radiation pattern of the E plane of the label of the present invention on the metal surface.
图5 为本发明标签在金属表面的回波损耗图。Fig. 5 is a graph of the return loss of the tag of the present invention on a metal surface.
图中附图标记：第一长边1，标签天线2，柔性介质3，第一中空区4，第二开口5，第二中空区6，第一宽边7，第一开口8，第二长边9，第二宽边10。Reference signs in the figure: first long side 1, tag antenna 2, flexible medium 3, first hollow area 4, second opening 5, second hollow area 6, first wide side 7, first opening 8, second 9 on the long side, 10 on the second wide side.
具体实施方式detailed description
下面结合附图对本发明实施例作详细说明。Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
实施例：如图1-2所示，本实施例提供的是一种柔性UHF RIFD标签，包括标签天线2和布设于标签天线2下表面的具有一定厚度的柔性介质3；标签本体使用于金属物体的表面，标签本体使用柔性材料作为介质层，柔性介质3的厚度为0.1—15mm，优选为0.8mm或1.2mm；柔性介质3采用泡沫海绵制成，其中泡沫海绵的材料为PVC聚氯乙烯、PMMA聚甲基丙烯酸甲酯、EVA乙烯-醋酸乙烯酯、PET聚对苯二甲酸乙二醇酯与它们的复合物，等。柔性介质3用于支撑标签天线，并辅助作为标签天线的电介质材料。Embodiment: As shown in Figure 1-2, this embodiment provides a flexible UHF RIFD tag, including a tag antenna 2 and a flexible medium 3 with a certain thickness arranged on the lower surface of the tag antenna 2; the tag body is used for metal On the surface of the object, the label body uses a flexible material as the medium layer, and the thickness of the flexible medium 3 is 0.1-15mm, preferably 0.8mm or 1.2mm; the flexible medium 3 is made of foam sponge, and the material of the foam sponge is PVC polyvinyl chloride , PMMA polymethyl methacrylate, EVA ethylene-vinyl acetate, PET polyethylene terephthalate and their composites, etc. The flexible medium 3 is used to support the tag antenna and assist as a dielectric material for the tag antenna.
标签天线2呈长方形，包括第一长边1、第二长边9、第一宽边7和第二宽边10；标签天线2上设有第一中空区4、第二中空区6、第一开口8和第二开口5；第一开口8与第一中空区4连通，第一开口8用于固定芯片；第二开口5的一端延伸至第一长边1，另一端与第二中空区6相通；第二中空区6沿第二开口5的中心位置对称布设；且第二中空区6与第二开口5呈⊥形状；第一中空区（4）和第二中空区6相互平行设置。The tag antenna 2 is rectangular and includes a first long side 1, a second long side 9, a first wide side 7 and a second wide side 10; the tag antenna 2 is provided with a first hollow area 4, a second hollow area 6, a first An opening 8 and a second opening 5; the first opening 8 communicates with the first hollow area 4, and the first opening 8 is used to fix the chip; one end of the second opening 5 extends to the first long side 1, and the other end is connected to the second hollow area. The area 6 communicates; the second hollow area 6 is arranged symmetrically along the center of the second opening 5; and the second hollow area 6 and the second opening 5 are in a ⊥ shape; the first hollow area (4) and the second hollow area 6 are parallel to each other set up.
采用上述标签天线2的特殊形状设计，使用特殊材料作为抗金属标签的基材，使UHF RFID 天线具有较好的阅读性能和辐射面。The special shape design of the tag antenna 2 above is adopted, and special materials are used as the base material of the anti-metal tag, so that the UHF RFID antenna has better reading performance and radiation surface.
第二中空区6与第一开口8相连通；第一开口8的宽度为0.1mm～3mm；优选为1mm；第二开口5的宽度为0.1mm～10mm，优选为1mm或6mm；第二中空区6呈长方形状，长边的长度为0.1mm～20mm，优选为1mm或7mm；宽边的长度为0.1mm～10mm，优选为1mm或3mm；第一中空区4至标签天线2的第二长边9距离为0.1mm～10mm，优选为1mm或4mm；标签天线2的长边1和长边9的长度相等，为20mm～300mm，优选为50mm或60mm；宽边7和宽边10的长度相等，为5mm～100mm，优选为10mm～20mm。The second hollow area 6 communicates with the first opening 8; the width of the first opening 8 is 0.1 mm to 3 mm; preferably 1 mm; the width of the second opening 5 is 0.1 mm to 10 mm, preferably 1 mm or 6 mm; the second hollow The area 6 is in the shape of a rectangle, the length of the long side is 0.1 mm to 20 mm, preferably 1 mm or 7 mm; the length of the wide side is 0.1 mm to 10 mm, preferably 1 mm or 3 mm; the first hollow area 4 to the second part of the tag antenna 2 The distance between the long side 9 is 0.1 mm to 10 mm, preferably 1 mm or 4 mm; the length of the long side 1 and the long side 9 of the tag antenna 2 is equal to 20 mm to 300 mm, preferably 50 mm or 60 mm; the width of the wide side 7 and the wide side 10 The lengths are equal, ranging from 5 mm to 100 mm, preferably from 10 mm to 20 mm.
为了适应不同芯片的电学参数，所述标签天线2预留有三个可以调节的参数，分别是第一中空区4的宽度、第二开口5的宽度、柔性介质3的厚度。通过调节这三个参数可以适应不同芯片的电学参数，以实现天线与芯片之间的良好匹配；在尽可能减小尺寸的同时，最大限度地确保标签的识别效果。In order to adapt to the electrical parameters of different chips, the tag antenna 2 reserves three adjustable parameters, namely the width of the first hollow area 4 , the width of the second opening 5 , and the thickness of the flexible medium 3 . By adjusting these three parameters, the electrical parameters of different chips can be adapted to achieve a good match between the antenna and the chip; while reducing the size as much as possible, the identification effect of the tag can be ensured to the greatest extent.
为了适应不同金属物体的识别距离要求，标签天线2预留有三个可以调节的参数，分别是长边1和长边9的长度、宽边7和宽边10的宽度、第一中空区4至标签天线2的第二长边9距离。通过调节这三个参数可以适应不同金属物体的识别距离要求，以实现标签与物体的良好匹配。在尽可能减小尺寸的同时，最大限度地确保标签的识别效果。In order to meet the recognition distance requirements of different metal objects, the tag antenna 2 reserves three adjustable parameters, which are the length of the long side 1 and the long side 9, the width of the wide side 7 and the wide side 10, the first hollow area 4 to The distance between the second long side 9 of the tag antenna 2 . By adjusting these three parameters, the recognition distance requirements of different metal objects can be adapted to achieve a good match between the tag and the object. Maximize label identification while minimizing size.
为了适应不同芯片的尺寸规格，标签天线2预留了一个可以调节的参数，即：第一开口8的宽度。通过调节这个参数可以适应不同UHF RFID标签芯片的尺寸，以实现芯片与天线的良好匹配。在尽可能减小尺寸的同时，最大限度地确保标签芯片的绑定质量。In order to adapt to different chip sizes, the tag antenna 2 reserves an adjustable parameter, namely: the width of the first opening 8 . By adjusting this parameter, the size of different UHF RFID tag chips can be adapted to achieve a good match between the chip and the antenna. Maximize the binding quality of the tag chip while keeping the size as small as possible.
如图3-4所示，本实施例提供的一种柔性UHF RIFD标签在金属表面的最大增益为-13.7dB。As shown in Figure 3-4, the maximum gain of a flexible UHF RIFD tag provided in this embodiment on a metal surface is -13.7dB.
如图5所示，本实施例提供的一种柔性UHF RIFD标签在金属表面的回波损耗图，其中，在925MHz附近具有最低回波损耗-26dB，带宽为20MHz。As shown in FIG. 5 , the return loss diagram of a flexible UHF RIFD tag provided in this embodiment on a metal surface has the lowest return loss of -26dB near 925MHz, and the bandwidth is 20MHz.
本实施例通过特殊形状设计以及使用特殊材料，使UHF RFID天线在金属物体表面使用时具有较好的阅读性能和辐射面。In this embodiment, through the special shape design and the use of special materials, the UHF RFID antenna has better reading performance and radiation surface when used on the surface of metal objects.
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现；因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. 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 invention; therefore , the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611047569.9ACN106845604A (en) | 2016-11-22 | 2016-11-22 | A kind of flexible UHF RFID anti-metal tags |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611047569.9ACN106845604A (en) | 2016-11-22 | 2016-11-22 | A kind of flexible UHF RFID anti-metal tags |
| Publication Number | Publication Date |
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| CN106845604Atrue CN106845604A (en) | 2017-06-13 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611047569.9APendingCN106845604A (en) | 2016-11-22 | 2016-11-22 | A kind of flexible UHF RFID anti-metal tags |
| Country | Link |
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| CN (1) | CN106845604A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107545298A (en)* | 2017-08-11 | 2018-01-05 | 电子科技大学 | A kind of flexible anti-metal tag |
| CN113728333A (en)* | 2019-04-24 | 2021-11-30 | 京瓷株式会社 | RFID tag |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122369A (en)* | 2010-01-08 | 2011-07-13 | Ls产电株式会社 | Radio frequency identification tag |
| CN205594666U (en)* | 2016-01-06 | 2016-09-21 | 华大半导体有限公司 | Electronic license plate label that anti electrically conductive thing disturbed |
| CN206601722U (en)* | 2016-11-22 | 2017-10-31 | 杭州电子科技大学 | A kind of flexible UHF RFID anti-metal tags |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122369A (en)* | 2010-01-08 | 2011-07-13 | Ls产电株式会社 | Radio frequency identification tag |
| CN205594666U (en)* | 2016-01-06 | 2016-09-21 | 华大半导体有限公司 | Electronic license plate label that anti electrically conductive thing disturbed |
| CN206601722U (en)* | 2016-11-22 | 2017-10-31 | 杭州电子科技大学 | A kind of flexible UHF RFID anti-metal tags |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107545298A (en)* | 2017-08-11 | 2018-01-05 | 电子科技大学 | A kind of flexible anti-metal tag |
| CN107545298B (en)* | 2017-08-11 | 2019-11-26 | 电子科技大学 | A kind of flexibility anti-metal tag |
| CN113728333A (en)* | 2019-04-24 | 2021-11-30 | 京瓷株式会社 | RFID tag |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | Application publication date:20170613 | |
| RJ01 | Rejection of invention patent application after publication |