CN211829189U - Tag antenna and passive temperature detection device - Google Patents
Tag antenna and passive temperature detection device Download PDFInfo
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- CN211829189U CN211829189U CN202020112842.7U CN202020112842U CN211829189U CN 211829189 U CN211829189 U CN 211829189U CN 202020112842 U CN202020112842 U CN 202020112842U CN 211829189 U CN211829189 U CN 211829189U
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Abstract
An embodiment of the utility model provides a tag antenna, include: the feeder line comprises a first conducting wire and a second conducting wire; first, second and third conductors in an elongated shape, and first and second connection conductors; the first connecting conductor is respectively connected with the lower ends of the first conductor, the second conductor and the third conductor; the second connecting conductor is connected with the first conductor, the second conductor and the third conductor; the first connecting conductor and the second connecting conductor are spaced by a set distance, and a first lead of the feeder is connected with the first connecting conductor; the second lead is connected to the second connection conductor. The embodiment of the utility model provides a passive temperature-detecting device is still provided.
Description
Technical Field
The utility model belongs to the technical field of the wireless communication technique and specifically relates to a tag antenna and passive temperature detection device are related to.
Background
Radio Frequency Identification (RFID) is an automatic identification technology that appears and develops in the middle and late 20 th century. The RFID technology realizes non-contact identification of a target object by transmitting a radio frequency signal through a reader through space electromagnetic waves, and the identification process does not need human intervention. With the introduction of the concept of the internet of things, the advantages of the RFID technology, such as non-contact identification and fast reading, make the RFID technology become one of the most promising information technologies in the 21 st century. The RFID technology working in the ultrahigh frequency band has the advantages of long identification distance, low tag manufacturing cost, simultaneous identification and quick identification of multiple tags and the like, and is particularly suitable for occasions such as retail industry, warehouse management, target tracking and the like, so that the RFID technology is rapidly developed. Research and development of UHF RFID technology has a positive effect on actual production and life.
The RFID system mainly comprises three parts, namely an electronic tag, a reader and system-level application, and when a reader antenna and a read-write system are fixed, the performance of the tag antenna determines the performance of the whole system. The tag antenna is divided into an active tag and a passive tag, the active tag can be read far enough to reach dozens of meters to hundreds of meters, but the tag antenna has large volume, high cost and limited service life by a battery; the passive tag has the advantages of low manufacturing cost, simple design, long service life and the like. In recent years, the tag antenna has a single function and a limited application environment. With the continuous development of the internet of things, in order to realize the interconnection of everything, various complex environments in nature are necessarily involved, so that the design of the RFID tag antenna capable of being suitable for a specific environment has important significance.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a tag antenna.
An embodiment of the utility model provides a tag antenna, include:
the feeder line comprises a first conducting wire and a second conducting wire;
the first conductor, the second conductor and the third conductor are arranged in a three-dimensional manner;
the first connecting conductor is respectively connected with the lower ends of the first conductor, the second conductor and the third conductor;
the second connecting conductor is connected with the first conductor, the second conductor and the third conductor;
the first connecting conductor and the second connecting conductor are spaced by a set distance, and a first lead of the feeder is connected with the first connecting conductor; the second lead is connected to the second connection conductor.
The embodiment of the utility model provides a still provide a passive temperature-detecting device, include:
the probe assembly comprises a probe and a temperature sensor, and the temperature sensor is arranged in the probe;
according to any tag antenna, one end of a feeder line in the tag antenna is connected with the temperature sensor;
the tag antenna receives an external first wireless signal and converts the first wireless signal into electric energy to excite the temperature sensor to detect temperature information, and feeds back a second wireless signal with the temperature information outwards.
The embodiment of the utility model provides a tag antenna and passive temperature detection device conveniently are at arbitrary angle temperature measurement.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a passive temperature detection device according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a passive temperature detection device according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of a passive temperature detection device according to an embodiment of the present invention;
fig. 4 is a structural diagram of a tag antenna of a passive temperature detection device according to an embodiment of the present invention;
fig. 5 is a structural diagram of another tag antenna of the passive temperature detection device according to an embodiment of the present invention;
fig. 6 is a structural diagram of another tag antenna of the passive temperature detection device according to an embodiment of the present invention;
fig. 7 is a schematic partial structural diagram of a passive temperature detection device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
The embodiment of the utility model provides a terminology such as "first", "second", only for distinguishing relevant technical feature, do not show the precedence order.
In order to explain the technical solution of the embodiments of the present invention, the following description is made by using specific embodiments.
As shown in fig. 1-7, the structure of the passive temperature detecting device according to the embodiment of the present invention is schematically illustrated. The specific contents are as follows:
as shown in fig. 1-3, a passive temperature detecting device 100 according to an embodiment of the present invention is provided. The passive temperature detecting device 100 includes a housing 110, a probe assembly 120, and a tag antenna 130.
In an exemplary embodiment, the housing 110 is made of a heat resistant material, such as ceramic.
In an exemplary embodiment, the housing 110 includes an upper housing 111 and a lower housing 112. The upper case 111 has an elongated hollow structure, and a main portion of the tag antenna 130 is disposed inside the upper case 111. The lower case 112 is fitted to the upper case 111 to seal the upper case 111.
The probe assembly 120 includes a probe 121 and a temperature sensor 122. As shown in fig. 3, the probe 121 has a hollow structure, and the temperature sensor 122 is disposed in the hollow structure of the probe 121. In an exemplary embodiment, one or more temperature sensors 122 may be included in the probe assembly 120. If only one temperature sensor 122 is included in the probe assembly 120, the temperature sensor 122 is disposed as close to the head of the probe 121 as possible, i.e., disposed as close to the tip portion of the probe 121 as possible. If a plurality of temperature sensors 122 (more than two temperature sensors 122) are included in the probe assembly 120, the plurality of temperature sensors 122 may be distributed in the length direction of the probe 121. This facilitates detection of the temperature of various portions of the probe 121.
The embodiment of the utility model provides a tag antenna 130, tag antenna 130 is used for receiving the first wireless signal that external device sent and comes, and will first wireless signal turns into the electric energy, in order to arouse temperature sensor 122 detects temperature information. The tag antenna 130 also feeds back a second wireless signal with temperature information to the outside.
In a specific embodiment, the first wireless signal is an electromagnetic wave, and the tag antenna 130 converts the electromagnetic wave into electric energy after receiving the electromagnetic wave, so as to excite the temperature sensor 122 to detect the temperature information. The tag antenna 130 also feeds back electromagnetic waves with temperature information to the outside.
The specific structure of the tag antenna 130 is as follows:
the tag antenna includes a feed line 137, and the feed line 137 includes a first conductive line and a second conductive line (not labeled in the figure).
In an exemplary embodiment, the feed line 137 is a coaxial feed line, the first conductor of the coaxial feed line being an inner conductor and the second conductor being an outer conductor. Specifically, the outer conductor of the coaxial feeder is a metal tube, and the inner conductor is a metal probe. This ensures that the passive temperature sensing device 100 can operate in a high temperature environment (e.g., in the range of 200-800 ℃).
The tag antenna 130 further includes an elongated first conductor 131, a second conductor 132, and a third conductor 133. In an exemplary embodiment, the first conductor 131, the second conductor 132, and the third conductor 133 can be conductive sheets, wires, or coatings (e.g., metal sheets, wires, or coatings).
In a specific embodiment, the first conductor 131, the second conductor 132, and the third conductor 133 can be elongated metal sheets or wires, such as rectangular metal sheets or wires with an elongated shape, as shown in fig. 4-6.
In a specific embodiment, the first conductor 131, the second conductor 132, and the third conductor 133 are spatially distributed, that is, the first conductor 131, the second conductor 132, and the third conductor 133 are not distributed in the same plane, and the first conductor 131, the second conductor 132, and the third conductor 133 are not located on the same plane between each other.
The tag antenna 130 further includes a first connection conductor 135, and the first connection conductor 135 may be a conductive sheet, a conductive wire, a conductive coating, or the like (e.g., a metal sheet, a metal wire, a metal coating, or the like).
The first connection conductor 135 is connected to the lower ends of the first conductor 131, the second conductor 132, and the third conductor 133. The embodiment of the present invention provides a lower end of the first conductor 131, the second conductor 132, and the third conductor 133, and a portion near the lower end.
The tag antenna 130 of the embodiment of the present invention further includes a second connecting conductor 136, wherein the second connecting conductor 136 is connected to the first conductor 131, the second conductor 132, and the third conductor 133. That is, the second connection conductor 136 is connected to one or both of the first conductor 131, the second conductor 132, and the third conductor 133.
The embodiment of the present invention provides a distance is set between the first connecting conductor 135 and the second connecting conductor 136. I.e. there is no direct contact between the first connection conductor 135 and the second connection conductor 136.
The embodiment of the utility model provides a first wire and the first connecting conductor 135 of feeder 137 are connected, and the second wire is connected with second connecting conductor 136.
In a specific embodiment, the first conductor 131, the second conductor 132, and the third conductor 133 are uniformly distributed circumferentially, that is, the first conductor 131, the second conductor 132, and the third conductor 133 are uniformly distributed on a circumference, and the radian therebetween is 120 degrees.
The tag antenna of the embodiment of the present invention, the portion close to the metal is a ground plane, specifically, one or two of the conductor 131, the second conductor 132, and the third conductor 133 may be close to the metal and serve as a ground plane; the other two or 1 are far from the metal as radiating elements. In this embodiment, the antenna radiating element and the ground plane constitute four conductive side portions, the size of which is 80mm × 11mm × 11mm, and the total size of the coaxial feeder portion antenna is 135mm × 11mm × 11 mm. The specific sizes are as follows: the dimensions of the four conductive side parts are 80mm × 5mm, the dimensions of the feed surface are 11mm × 4mm, the dimensions of the two identical short circuit surfaces are 3mm × 5mm, and the dimensions of the fixing surface are 11mm × 3 mm.
As shown in fig. 4-6, which are schematic structural diagrams of the tag antenna 130 according to an embodiment of the present invention. The tag antenna 130 as shown further includes an elongated fourth conductor 134, which may be a conductive sheet, wire, or coating (e.g., a metal sheet, wire, or coating). The first connection conductor 135 is connected to the lower end of the fourth conductor 134.
The second connection conductor 136 is connected to portions of the first conductor 131, the second conductor 132, the third conductor 133, and the fourth conductor 134. That is, the second connection conductor 136 is connected to 1 to 3 of the first conductor 131, the second conductor 132, the third conductor 133, and the fourth conductor 134.
As shown in fig. 4 to 6, the second connecting conductor 136 is connected to the second conductor 132 and the fourth conductor 134. In a specific embodiment, the first conductor 131, the second conductor 132, the third conductor 133 and the fourth conductor 134 are made of metal sheets, and the second connection conductor 136 is made of metal sheets. The second connection conductor 136 is connected to the second conductor 132 and the fourth conductor 134, respectively.
As shown in fig. 4-6, the feed line is a coaxial feed line, the inner conductor of which is connected to the second connection conductor 136.
In a specific embodiment, the first connection conductor 135 includes a first conductive structure and a second conductive structure (not labeled) connected to each other. In a specific embodiment, the first conductive structure is connected to the lower ends of the first conductor 131 and the second conductor 132 respectively; the second conductive structure is connected to the lower ends of the third conductor 133 and the fourth conductor 134, respectively.
The first conductor 131 and the second conductor 132 according to the embodiment of the present invention may be disposed adjacently or disposed oppositely (as shown in fig. 4-6, the first conductor 131 and the second conductor 132 are disposed adjacently); the third conductor 133 and the fourth conductor 134 may be disposed opposite to each other or adjacent to each other (as shown in fig. 4 to 6, the third conductor 133 and the fourth conductor 134 may be disposed adjacent to each other).
In a specific embodiment, the first conductive structure, the first conductive body 131, and the second conductive body 132 are divided into a bottom portion and left and right sides of a U-shaped metal sheet; and/or the second conductive structure, the third conductive body 133 and the fourth conductive body 134 are divided into a bottom part and left and right sides of a U-shaped metal sheet. The first conductor 131 and the second conductor 132 according to the embodiment of the present invention may be disposed oppositely or adjacently; the embodiment of the present invention provides a third conductor 133 and a fourth conductor 134 which can be disposed relatively or adjacently.
The first conductive structure, the first conductive body 131 and the second conductive body 132 according to the embodiment of the present invention are divided into a bottom part and left and right sides of a U-shaped metal wire; and/or the second conductive structure, the third conductive body 133 and the fourth conductive body 134 are divided into a bottom part and left and right sides of the U-shaped metal wire.
In a specific embodiment, the first conductor 131, the second conductor 132, the third conductor 133 and the fourth conductor 134 may be distributed circumferentially or uniformly distributed circumferentially.
In a specific embodiment, the first conductor 131 is disposed opposite to the third conductor 133, the second conductor 132 is disposed opposite to the fourth conductor 134, and the radian between the first conductor 131 and the second conductor 132 is 70-110 °.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A tag antenna, comprising:
the feeder line comprises a first conducting wire and a second conducting wire;
the first conductor, the second conductor and the third conductor are arranged in a three-dimensional manner;
the first connecting conductor is respectively connected with the lower ends of the first conductor, the second conductor and the third conductor;
the second connecting conductor is connected with the first conductor, the second conductor and the third conductor;
the first connecting conductor and the second connecting conductor are spaced by a set distance, and a first lead of the feeder is connected with the first connecting conductor; the second lead is connected to the second connection conductor.
2. The tag antenna of claim 1, wherein the first conductor, the second conductor, and the third conductor are circumferentially uniformly distributed.
3. The tag antenna of claim 1, further comprising:
an elongated fourth electrical conductor;
the first connecting conductor is connected with the lower end of the fourth conductor;
the second connection conductor is connected to portions of the first conductor, the second conductor, the third conductor, and the fourth conductor.
4. A tag antenna according to claim 3, wherein the first connection conductor comprises a first conductive structure and a second conductive structure connected to each other;
the first conductive structure is respectively connected with the lower ends of the first conductor and the second conductor;
the second conductive structure is respectively connected with the lower ends of the third conductor and the fourth conductor.
5. The tag antenna of claim 4, wherein the first conductive structure, the first conductor, and the second conductor are divided into a bottom portion and left and right sides of a U-shaped metal sheet;
and/or the second conductive structure, the third conductor and the fourth conductor are divided into the bottom part, the left side and the right side of a U-shaped metal sheet.
6. The tag antenna of claim 4, wherein the first conductive structure, the first conductor, and the second conductor are divided into a bottom portion and left and right sides that are U-shaped wires;
and/or the second conductive structure, the third conductor and the fourth conductor are divided into a bottom part and left and right sides which are U-shaped metal wires.
7. The tag antenna of claim 6, wherein the first conductor and the second conductor are disposed opposite to each other;
and/or the third conductor and the fourth conductor are oppositely arranged or adjacently arranged.
8. The tag antenna of claim 1, wherein the feed line is a coaxial feed line, the first wire is an outer conductor of the coaxial feed line, and the second wire is an inner conductor of the coaxial feed line.
9. The tag antenna of claim 8, wherein the coaxial feed outer conductor is a metal tube and the inner conductor is a metal probe.
10. A passive temperature sensing device, comprising:
the probe assembly comprises a probe and a temperature sensor, and the temperature sensor is arranged in the probe;
a tag antenna according to any one of claims 1 to 9, wherein a feed line within the tag antenna is connected at one end to the temperature sensor;
the tag antenna receives an external first wireless signal and converts the first wireless signal into electric energy to excite the temperature sensor to detect temperature information, and feeds back a second wireless signal with the temperature information outwards.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020112842.7U CN211829189U (en) | 2020-01-17 | 2020-01-17 | Tag antenna and passive temperature detection device |
| AU2020294325A AU2020294325B2 (en) | 2020-01-17 | 2020-12-24 | Tag antenna and passive temperature detection apparatus |
| US17/133,670 US11781916B2 (en) | 2020-01-17 | 2020-12-24 | Tag antenna and passive temperature detection apparatus |
| EP20218005.5A EP3852191A1 (en) | 2020-01-17 | 2020-12-31 | Tag antenna and passive temperature detection apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020112842.7U CN211829189U (en) | 2020-01-17 | 2020-01-17 | Tag antenna and passive temperature detection device |
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| CN211829189U true CN211829189U (en) | 2020-10-30 |
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| CN202020112842.7U Active CN211829189U (en) | 2020-01-17 | 2020-01-17 | Tag antenna and passive temperature detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11781916B2 (en) | 2020-01-17 | 2023-10-10 | Shenzhen Hypersynes Co., Ltd. | Tag antenna and passive temperature detection apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11781916B2 (en) | 2020-01-17 | 2023-10-10 | Shenzhen Hypersynes Co., Ltd. | Tag antenna and passive temperature detection apparatus |
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