Tag antennas for animal temperature measurement

Abstract

This invention provides a tag antenna for animal temperature measurement. The tag antenna for animal temperature measurement includes a ceramic body, an upper electrode, a second upper electrode, a lower electrode, a side electrode, a feed electrode, and a temperature-measuring RFID chip. The body is elongated, with a first connecting portion along its length and a second connecting portion along its length. The first and second upper electrodes are both fixed to one connecting portion, and a coupling seam at the connecting portion disconnects the first and second upper electrodes. The lower electrode is fixed to the second connecting portion of the body, and the side electrode is fixed to one end of the body, electrically connecting the second and lower electrodes. This tag antenna exhibits high stability.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and more specifically to a tag antenna for animal temperature measurement. Background Technology

[0002] RFID (Radio Frequency Identification) technology is a communication technology that can identify specific targets and read and write related data through radio signals without the need for mechanical or optical contact between the identification system and the specific target.

[0003] Therefore, it is widely used in logistics, medical device management, material use, library management, animal identification, production assembly and other fields.

[0004] An RFID system generally consists of three parts: electronic tags, readers, and application software. Electronic tags store the identification information of the tagged object. Readers communicate wirelessly with the electronic tags, enabling the writing and reading of data from the tags. The application software analyzes and processes the data collected by the readers. The electronic tag is a key component of the entire system, and the performance of the tag antenna largely determines the tag's performance, including read / write distance and consistency. Electronic tag antennas mainly come in various types, such as dipole antennas, microstrip antennas, planar inverted-F antennas, and planar L antennas, and are used in different applications.

[0005] Currently, most animal body temperature monitoring methods used are external temperature measurement methods such as ear tags or collars, which are greatly affected by the environment and also have the risk of falling off. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned problems in existing technologies by providing a highly applicable and compact tag antenna for animal temperature measurement.

[0007] To achieve the above objectives, this utility model can be implemented through the following technical solutions:

[0008] A tag antenna for animal temperature measurement includes a ceramic body, characterized in that it further includes an upper electrode, an upper electrode, a lower electrode, a side electrode, a feed electrode, and a temperature-measuring RFID chip. The body is elongated, with a connecting portion one on the upper side along the length of the body and a connecting portion two on the lower side along the length of the body. The upper electrode one and the upper electrode two are both fixedly connected to the connecting portion one, and a coupling seam is provided at the connecting portion one to disconnect the upper electrode one and the upper electrode two. The lower electrode is fixedly connected to the connecting portion two of the body. The side electrode is fixedly connected to one end of the body and electrically connects the upper electrode two and the lower electrode. The feed electrode is fixedly connected to the other end of the body and electrically connects the upper electrode one and the lower electrode. The RFID chip is fixedly connected to the feed electrode.

[0009] The aforementioned tag antenna for animal temperature measurement also includes a tubular sleeve sealed at both ends. An upper electrode, an upper electrode, a lower electrode, a side electrode, a feed electrode, and an RFID chip fixed to the main body form a temperature measurement tag, which is located inside the sleeve.

[0010] In the aforementioned tag antenna for animal temperature measurement, the two ends of the temperature measurement tag are respectively close to the corresponding ends inside the sleeve.

[0011] In the aforementioned tag antenna for animal temperature measurement, the chip feed pin of the feed electrode is electrically connected to the upper electrode two.

[0012] In the aforementioned tag antenna for animal temperature measurement, the coupling slot includes three straight segments: slot one, slot two, and slot three. Slot one extends from one side of the body to the middle of the body along the width direction of the body, and slot three extends from the other side of the body to the middle of the body along the width direction of the body. Slot two is located in the middle of the body and connects slot one and slot three.

[0013] In the aforementioned tag antenna for animal temperature measurement, the upper electrode 2 between the first slit and the side electrode is the first adjustment part, and the upper electrode 1 between the third slit and the feed electrode is the second adjustment part.

[0014] In the aforementioned tag antenna for animal temperature measurement, the main body is rectangular in shape.

[0015] In the aforementioned tag antenna for animal temperature measurement, the body is a microwave dielectric ceramic with a dielectric constant of 20 to 160.

[0016] In the aforementioned tag antenna for animal temperature measurement, the body is one of BaO-PbO-Nd2O3-TiO2, CaO-Li2O-Ln2O3-TiO2, Zr-Nb2O5-TiO2, or BaO-Sm2O3-TiO2.

[0017] In the aforementioned tag antenna for animal temperature measurement, the sleeve is a glass tube.

[0018] In the aforementioned tag antenna for animal temperature measurement, the outer side of the sleeve has a coating.

[0019] In the aforementioned tag antenna for animal temperature measurement, the coating is a nano-titanium dioxide coating.

[0020] In the aforementioned tag antenna for animal temperature measurement, the coating is a fluorocarbon resin coating.

[0021] Compared with existing technologies, the tag antenna for animal temperature measurement is implemented in the form of a coupled-fed PIFA antenna, which allows the tag antenna to operate on a long strip body. This structure is easy to use as an implantable tag.

[0022] Meanwhile, during fabrication, the operating frequency of the tag antenna is adjusted by adjusting adjustment part two, and the tag chip impedance is conjugate matched at the operating frequency by adjusting adjustment part one. Therefore, its applicability is relatively high. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the tag antenna used for animal temperature measurement when it is used with the temperature measurement tag.

[0024] Figure 2 This is a top view of the structure of the tag antenna used for animal temperature measurement when it is used with the temperature measurement tag.

[0025] Figure 3 This is a cross-sectional view of the tag antenna used for animal temperature measurement when it is used as an implanted tag.

[0026] In the picture:

[0027] 1. Body; 1a. Connecting part one; 1b. Connecting part two; 2. Upper electrode one; 3. Upper electrode two; 4. Lower electrode; 5. Side electrode; 6. Feeding electrode; 7. RFID chip; 8. Coupling seam; 8a. Segment seam one; 8b. Segment seam two; 8c. Segment seam three; 9. Adjustment part one; 10. Adjustment part two; 11. Sleeve; 12. Coating. Detailed Implementation

[0028] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings.

[0029] Example 1

[0030] like Figure 1 and Figure 2As shown, the tag antenna for animal temperature measurement includes a ceramic body 1, an upper electrode 2, an upper electrode 3, a lower electrode 4, a side electrode 5, a feed electrode 6, and a temperature-measuring RFID chip 7. The body 1 is elongated, with a connecting part 1a on the upper side along the length of the body 1 and a connecting part 2b on the lower side along the length of the body 1. The upper electrode 2 and the upper electrode 3 are both fixed to the connecting part 1a. A coupling slit 8 is provided at the connecting part 1a to disconnect the upper electrode 2 and the upper electrode 2. The lower electrode 4 is fixed to the connecting part 2b of the body 1. The side electrode 5 is fixed to one end of the body 1 and electrically connects the upper electrode 2 and the lower electrode 4. The feed electrode 6 is fixed to the other end of the body 1 and electrically connects the upper electrode 2 and the lower electrode 4. The RFID chip 7 is fixed to the feed electrode 6.

[0031] The chip feed pin of the feed electrode 6 is electrically connected to the upper electrode 3.

[0032] The coupling seam 8 includes three straight segments: a first segment 8a, a second segment 8b, and a third segment 8c. The first segment 8a extends from one side of the body 1 to the middle of the body 1 along the width direction of the body 1. The third segment 8c extends from the other side of the body 1 to the middle of the body 1 along the width direction of the body 1. The second segment 8b is located in the middle of the body 1 and connects the first segment 8a and the third segment 8c.

[0033] The entire coupling seam 8 has a "Z" shaped structure.

[0034] The upper electrode 2 3 between the first slit 8a and the side electrode 5 is the first adjustment part 9, and the upper electrode 2 between the third slit 8c and the feed electrode 6 is the second adjustment part 10.

[0035] The main body 1 is rectangular in shape.

[0036] As can be seen, the main body 1 of this tag antenna is elongated, and the upper electrode 3 is an irregular elongated strip composed of two regular rectangles. The length and width of the upper electrode 3 are related to the operating frequency of the antenna.

[0037] The tag antenna using this solution can greatly reduce the requirements for the dielectric constant of the ceramic material. For example, a tag antenna that requires a length of 16mm typically requires a dielectric constant of over 200, while with this design, a 16mm tag antenna only requires a dielectric constant of 40-50.

[0038] Because a higher dielectric constant results in a stronger confinement of the radiated electric field, the lower the radiation efficiency of the tag antenna, this scheme has a higher tag antenna radiation efficiency and a longer read / write distance under the same conditions.

[0039] In practice, the length and width of the upper electrode 2 3 are obtained using simulation software, such as HFSS, and then fine-tuned based on actual test results. Simultaneously, the operating frequency can be fine-tuned later by adjusting the width of the side electrode 5.

[0040] When used as a temperature measurement tag, the temperature of the temperature measurement tag needs to be read by a corresponding device, such as a handheld reader that matches the temperature measurement tag.

[0041] The higher the dielectric constant of the ceramic material used in this solution's label, the smaller its size, and the closer the read / write distance.

[0042] The body 1 is a microwave dielectric ceramic with a dielectric constant of 20. Depending on the actual situation, a microwave dielectric ceramic with a dielectric constant of 160 is also feasible.

[0043] The substrate 1 is BaO-PbO-Nd2O3-TiO2. Depending on the actual situation, it is feasible to use any one of CaO-Li2O-Ln2O3-TiO2, Zr-Nb2O5-TiO2, or BaO-Sm2O3-TiO2 for the substrate 1.

[0044] Example 2

[0045] This embodiment adds a sleeve 11 to the existing embodiment one. Specifically:

[0046] like Figure 3 As shown, it also includes a tubular sleeve 11 sealed at both ends. An upper electrode 2, an upper electrode 3, a lower electrode 4, a side electrode 5, a feed electrode 6, and an RFID chip 7, which are fixed to the body 1, form a temperature measuring tag. The temperature measuring tag is located inside the sleeve 11.

[0047] The two ends of the temperature measuring tag are respectively close to the corresponding ends inside the sleeve 11.

[0048] The sleeve 11 is a glass tube.

[0049] When this implementation is used as an implanted tag, the temperature measuring tag needs to be inserted into a glass tube and sealed at both ends, and a coating is added to the surface of the glass tube.

[0050] The outer side of the sleeve 11 has a coating 12. In this embodiment, the coating 12 is a nano-titanium dioxide coating. TiO₂ is a natural mineral that is harmless to the human body and does not pollute the environment.

[0051] Depending on the specific circumstances, a fluorocarbon resin coating can also be used. This coating offers excellent wear resistance and UV resistance, extending the lifespan of glass products. Furthermore, it is non-toxic and suitable for a variety of applications.

[0052] The tag antenna for animal temperature measurement is implemented in the form of a coupled-fed PIFA antenna, which allows the tag antenna to operate on a long strip body. This structure is easy to use as an implantable tag.

[0053] Meanwhile, during fabrication, the operating frequency of the tag antenna is adjusted by adjusting adjustment part two, and the tag chip impedance is conjugate matched at the operating frequency by adjusting adjustment part one. Therefore, its applicability is relatively high.

[0054] The above-described technical solution of this utility model addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies. The parts not covered in this application's technical solution are the same as or can be implemented using existing technologies, and will not be described in detail here.

[0055] The technical solutions in the above embodiments have clearly and completely described the content of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A tag antenna for temperature measurement of an animal, comprising a body of a ceramic material, characterized in that, It also includes an upper electrode 1, an upper electrode 2, a lower electrode, a side electrode, a feed electrode, and a temperature-measuring RFID chip. The main body is elongated, with a connecting part 1 on the upper side along the length of the main body and a connecting part 2 on the lower side along the length of the main body. The upper electrode 1 and the upper electrode 2 are both fixed to one point of the connecting part. A coupling seam is provided at the connecting part to disconnect the upper electrode 1 and the upper electrode 2. The lower electrode is fixed to the connecting part 2 of the main body. The side electrode is fixed to one end of the main body and electrically connects the upper electrode 2 and the lower electrode. The feed electrode is fixed to the other end of the main body and electrically connects the upper electrode 1 and the lower electrode. The RFID chip is fixed to the feed electrode.

2. The tag antenna for animal temperature measurement according to claim 1, wherein It also includes a tubular sleeve sealed at both ends, with an upper electrode one, an upper electrode two, a lower electrode, a side electrode, a feed electrode and an RFID chip fixed to the body to form a temperature measuring tag, the temperature measuring tag being located inside the sleeve.

3. The tag antenna for animal temperature measurement according to claim 2, wherein The two ends of the temperature measuring tag are respectively close to the corresponding ends inside the sleeve.

4. The tag antenna for animal temperature measurement according to claim 1 or 2 or 3, characterized by, The chip feed pin of the feed electrode is electrically connected to the upper electrode two.

5. The tag antenna for animal temperature measurement according to claim 1 or 2 or 3, wherein The coupling seam includes three straight segments: segment one, segment two, and segment three. Segment one extends from one side of the body to the middle of the body along the width direction of the body. Segment three extends from the other side of the body to the middle of the body along the width direction of the body. Segment two is located in the middle of the body and connects segment one and segment three.

6. The tag antenna for temperature measurement of an animal according to claim 5, wherein The upper electrode 2 between the first slit and the side electrode is the first adjustment part, and the upper electrode 1 between the third slit and the feed electrode is the second adjustment part.

7. The tag antenna for animal temperature measurement according to claim 6, wherein The body is rectangular in shape.

8. The tag antenna for animal temperature measurement according to claim 7, wherein The body is a microwave dielectric ceramic with a dielectric constant of 20~160.

9. The tag antenna for animal temperature measurement according to claim 8, wherein The substrate is one of BaO-PbO-Nd2O3-TiO2, CaO-Li2O-Ln2O3-TiO2, Zr-Nb2O5-TiO2, and BaO-Sm2O3-TiO2.

10. The tag antenna for temperature measurement of an animal according to claim 2, wherein The sleeve is a glass tube.

Images