CN217360813U - Annular antenna, electronic tag and detection system - Google Patents

Abstract

The utility model relates to a loop antenna, electronic tags and detecting system, be equipped with at least one fracture on the loop antenna, the fracture makes loop antenna loses information transceiver function and forms first end and second end near fracture department at loop antenna, first end and second end accessible make loop antenna resume information transceiver function near outer conductor or radio frequency signal to the perception measures the physical quantity. Through increasing the fracture on loop antenna's conductor, be close to the human body when loop antenna fracture department, liquid, can make loop antenna normal work when external conductor such as metal or radio frequency signal, make loop antenna possess the various physical quantity functions of response, it is passive to have, the penetrability, high accuracy, low cost, it is ultra-thin, characteristics such as flexibility, can place inside the testee, accomplish the unable measuring field of traditional measurement, measure the temperature, the liquid level, physical quantities such as displacement, structural stability is good, therefore, the clothes hanger is strong in practicability, can be used to geology displacement measurement, the crack is measured, industrial measurement, temperature measurement and the like.

Description

Annular antenna, electronic tag and detection system

Technical Field

The utility model relates to an electronic tags field especially relates to a loop antenna, electronic tags and detecting system.

Background

The electronic tag is also called as a radio frequency tag, a transponder and a data carrier; the reader is also called a reading device, a scanner, a reading head, a communicator, a reader/writer (depending on whether the electronic tag can wirelessly rewrite data). The electronic tag and the reader realize space (non-contact) coupling of radio frequency signals through a coupling element; and in the coupling channel, energy transfer and data exchange are realized according to a time sequence relation.

In the prior art, the measurement of physical quantities such as temperature, liquid level and the like is carried out through corresponding sensors, the measurement is active, the volume is too large, the cost is high, the real-time measurement cannot be carried out, a great improvement space is provided in the aspects of structural stability, product economy, practicability and the like, and part of complex environments cannot be used, so that improvement is urgently needed.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an electronic tags structure, through increasing the fracture on loop antenna's conductor, be close to the human body when loop antenna fracture department, liquid, can make loop antenna normal work when external conductor such as metal or radio frequency signal, make loop antenna possess the various physical quantity functions of response, have passively, the penetrability, high accuracy, low cost, it is ultra-thin, characteristics such as flexibility, can place inside the measured object, can accomplish the unable measuring field of traditional measurement, measure the temperature, the liquid level, physical quantity such as displacement, not only structural stability is good, and the practicality is strong, can be used to geological displacement measurement, the crack is measured, industrial measurement, temperature measurement, inductive switch etc.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a loop antenna, the last at least one fracture that is equipped with of loop antenna, the fracture makes loop antenna loses information transceiver function and forms first end and second end near fracture department at loop antenna, first end and second end accessible make loop antenna resume information transceiver function when being close to outer conductor or radio frequency signal to the perception measures the physical quantity.

The utility model provides an electronic tag structure, includes foretell loop antenna, still includes array antenna, antenna connecting portion and basement, array antenna and loop antenna pass through antenna connecting portion connect, loop antenna, array antenna and antenna connecting portion all locate on the basement.

Furthermore, a section opening is formed in the loop antenna, and an RFID chip is arranged at the section opening.

The displacement electronic tag comprises the electronic tag structure, and further comprises a traction piece, an external conductor, a fixing piece, an expansion piece and a traction block, wherein one end of the expansion piece is connected with the fixing piece, the other end of the expansion piece is connected with the traction piece through the external conductor, the other end of the traction piece is connected with a measured object, and the external conductor can move under the driving of the traction piece and is in contact with the first end and the second end.

Furthermore, the electronic tag structures are multiple and are sequentially arranged, and the fractures of the electronic tag structures are located on a moving path of the external conductor.

A temperature electronic tag comprises at least one electronic tag structure, a container and a pipeline, wherein the container is communicated with the pipeline, the pipeline extends to a fracture of the electronic tag structure, and conductive liquid capable of expanding along with temperature rise is arranged in the container.

The utility model provides a temperature electronic tags, includes at least one foretell electronic tags structure, still includes container, pipeline, outer conductor and elastic component, the pipeline extends to the fracture of electronic tags structure, the one end of pipeline is located to the container, the elastic component is located the one end of keeping away from the container in the pipeline, the elastic component with outer conductor connects, be equipped with in the container and rise and the expanded gas along with the temperature.

The utility model provides a liquid level electronic tags, includes a plurality of foretell electronic tags structures, still includes pipeline and outer conductor, and is a plurality of the direction of height of liquid level is followed to the electronic tags structure and is arranged, the pipeline intercommunication is a plurality of the fracture of electronic tags structure, outer conductor locates in the pipeline and can go up and down along with the liquid level.

Further, the electronic tag structure senses the liquid level through the RSSI.

A detection system comprises the electronic tag, a reader, a processor and a terminal, wherein the reader is used for reading data of the electronic tag, and the processor is used for processing the data and sending the data to the terminal.

The utility model discloses compare in prior art's beneficial effect and be:

the utility model has the characteristics of softness, thinness, passivity, high measurement accuracy, low cost and the like, through adding the fracture on the loop antenna, when the fracture of the loop antenna is close to external conductors or radio frequency signals of human body, liquid, metal and the like, the loop antenna can recover the information transceiving function, the loop antenna has the function of sensing various physical quantities, the loop antenna can adapt to the measurement requirements of different conditions, when the fracture of the loop antenna is close to the external conductors, the signal sensitivity of the loop antenna can be changed, the signal sensitivity can be changed by the approach distance between the fracture of the loop antenna and the external conductors, more than one loop antenna is used for arranging in sequence, the measured object expands or the measured object makes the conductor displace to the fracture, so that the loop antenna recovers the information transceiving function, the field which can not be measured by the traditional measurement can be completed, the physical quantities of temperature, liquid level, displacement and the like are measured, not only structural stability is good, and the practicality is strong moreover, can be used to fields such as geological displacement measurement, crack measurement, industrial survey, temperature measurement, inductive switch.

Drawings

Fig. 1 is a structural diagram of an electronic tag structure according to a first embodiment of the present invention.

Fig. 2 is an enlarged view of the area a in fig. 1.

Fig. 3 is a structural diagram of an electronic tag structure according to a second embodiment of the present invention.

Fig. 4 is a schematic structural diagram of the displacement electronic tag of the present invention.

Fig. 5 is a schematic structural diagram of another embodiment of the displacement electronic tag of the present invention.

Fig. 6 is a structural diagram of a first embodiment of the temperature electronic tag of the present invention.

Fig. 7 is a structural diagram of a second embodiment of the temperature electronic tag of the present invention.

Fig. 8 is a structural diagram of a third embodiment of the temperature electronic tag of the present invention.

Fig. 9 is a structural diagram of a fourth embodiment of the temperature electronic tag of the present invention.

Fig. 10 is a structural diagram of the liquid level electronic tag of the present invention.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention will be described in further detail with reference to specific embodiments and drawings.

Referring to fig. 1-2, a first embodiment of the present invention includes:

a loop antenna 100 is provided with at least one fracture 102 on the loop antenna 100, so that the loop antenna 100 loses the information transceiving function, and a first end 103 and a second end 104 are formed at the loop antenna 100 near the fracture 102, and the first end 103 and the second end 104 can make the loop antenna 100 restore the information transceiving function through an external conductor or a radio frequency signal strong enough to sense a measurement physical quantity.

It should be noted that, by providing the break 102, the first end 103 and the second end 104 are not connected in the initial state, and when the loop antenna is close to the external conductor or has a radio frequency signal, the first end 103 and the second end 104 can be connected to each other, so as to generate a signal, and further sense and measure the physical quantity. It is understood that the external conductor may be any conductive conductor, such as human body, liquid, metal, etc., and the application is not limited thereto.

It should be understood that a loop antenna is a radiating structure formed by winding a metal conductor into a certain shape (e.g., circular, square, triangular, etc.), and using two ends of the conductor as feeding ends. A multi-turn (e.g., helical or lap wound) wound loop antenna is known as a multi-turn loop antenna.

Loop antennas may be classified by the size of the electrical dimension. The length of the conductor of the winding ring is far less than the wavelength of free space, and the winding ring is called as an electric small ring antenna; when the length of the conductor of the winding ring is close to the resonance size (the ring circumference is close to the wavelength), the antenna is called as an electric large ring antenna, is mainly used as a unit of a directional array, and belongs to a resonance type antenna.

The termination impedance of the loop antenna may be zero or equal to the characteristic impedance of the loop, with a current distribution similar to that of a parallel transmission line. The currents on the electrical ringlets are approximately in equal amplitude and in phase. The current on the electrical large ring is in a standing wave distribution. When the impedance of the terminating load is equal to the characteristic impedance of the loop, the current on the loop is distributed as a traveling wave.

According to the duality principle of electromagnetic radiation, the radiation fields of the small electric ring and the small electric dipole antenna which is arranged perpendicular to the ring surface are similar except that the electric quantity and the magnetic quantity are exchanged, namely, the upward direction of the plane of the ring surface is a circle, the upward direction of the plane of the ring axis is a figure 8, and the radiation along the direction of the ring axis is zero.

The loop may be hollow or magnetic core, single or multi-turn. Theories and experiments prove that the radiation field is in direct proportion to the area and the number of turns of the ring and the current on the ring and in inverse proportion to the square sum of the working wavelength and the distance; is not much related to the shape of the ring.

If a load resistor is connected to a proper position of the loop antenna to make the conductor carry the traveling wave current, a non-resonant loop antenna or a loaded loop antenna can be formed, which has a wider frequency band characteristic. An electrical small loop antenna may be equivalent to a magnetic dipole consisting of a pair of magnetic charges of equal and opposite sign. The normal direction of the ring surface is taken as a polar axis of the spherical coordinate system, and the center of the ring is arranged at the origin of coordinates. The small loop antenna has the same directivity when used as a receiving antenna and a transmitting antenna. This is a necessary result, as can be seen from the reciprocity principle. Usually, the loop antenna can be directly used as a tuning inductor of the receiver input circuit, and the voltage obtained at the receiver input is Q times of the induced electromotive force of the loop antenna. Where Q is the quality factor of the tuned loop. In the past, small loop antennas have been used primarily in the lower frequency bands as broadcast receiving or direction finding antennas. Since the 70's of the 20 th century, it was widely used for VHF and UHF frequencies, not only as a receiving antenna, but also as a transmitting antenna.

The present application further provides an electronic tag structure 200, including the above-mentioned loop antenna 100, the antenna 201, the antenna connection portion 202, and the substrate not shown in the figure, the antenna 201 and the loop antenna 100 are connected through the antenna connection portion 202, and the loop antenna 100, the antenna 201, and the antenna connection portion 202 are all disposed on the substrate. Illustratively, the array antenna 201 is symmetrically disposed, and the antenna connection portion 202 has a meandering shape, and one end thereof is connected to the array antenna 201, and the other end thereof is connected to the loop antenna 100. The loop antenna 100, the antenna element 201, and the antenna connection portion 202 are mounted on the substrate by means of bonding or soldering.

In this embodiment, the loop antenna 100 is provided with a cross-section opening 105, and the cross-section opening 105 is provided with an RFID chip 106. It should be noted that when the break of the loop antenna is close to the conductor, the rf signal on the loop antenna 100 generates a skin effect, and the electromagnetic signal is conducted from the first end 103 to the external conductor, and the external conductor is conducted to the second end 104, so that the loop antenna recovers the information transceiving function.

In addition, a skin effect is generated based on the high frequency ac signal on the loop antenna 100, and when the rf signal is strong enough, the loop antenna recovers the information transceiving function.

Therefore, based on the skin effect generated by the high frequency ac signal on the loop antenna 100, when the loop antenna fracture 102 is close to the external conductor of human body, liquid, metal, etc. or the rf signal, the loop antenna can work normally, and by this characteristic, the loop antenna can be used to measure the change of physical quantity such as humidity, temperature, etc. by combining with the water absorbing material or the thermal expansion material, etc.

It is understood that in some embodiments, the loop antenna 100 may not be provided with the fracture surface 105, that is, the loop antenna 100 is not provided with the RFID chip, and the loop antenna 100 can also sense and measure the physical quantity through the fracture surface.

The loop antenna can be applied to UHF electronic tags, and it should be noted that UHF (ultra High frequency) electronic tags are also called ultra High frequency electronic tags. The UHF tag is one of the RFID tags, and has the characteristics of long identification distance, high identification rate, strong anti-collision capacity, good expandability and the like, the reading distance reaches 3-10 meters, and 100 cards can be read per second.

Referring to fig. 3, in the present embodiment, the electronic tag structure of the second embodiment of the present invention includes a first end 103 and a second end 104 parallel to each other, and both ends have a predetermined length, and a fracture 102 is located between the first end 103 and the second end 104, so as to form a sensitivity sensing area, and by sensing the contact length between the external conductor and the first end 103 and the second end 104, the sensitivity of the electronic tag can be changed, and by reading different sensitivities through an external device, the change of the physical quantity can be obtained.

Referring to fig. 4, fig. 4 is a structural diagram of a displacement electronic tag adopting the above electronic tag structure, wherein a part of fig. 4 is a schematic diagram of a state before displacement, and b part of fig. 4 is a schematic diagram of a state after displacement. Specifically, the displacement electronic tag of the embodiment mainly includes an electronic tag structure 200, a pulling element 206, an external conductor 207, a fixing element 208, a telescopic element 210, and a pulling block 209, wherein one end of the telescopic element 210 is connected to the fixing element 208, the other end is connected to the pulling element 206 through the external conductor 207, the external conductor 207 is disposed on one side of the electronic tag structure 200 and contacts with the electronic tag structure 200, one end of the pulling element 206 is connected to the external conductor 207, and the other end is connected to the pulling block 209.

The measurement principle of the displacement electronic tag is as follows: pulling through the pull piece 209 and pulling 206, pull piece 206 drives outer conductor 207, outer conductor 207 and first end 103 and second end 104 contact, make both communicate, electronic tags structure 200 resumes information transceiver function, along with outer conductor 207's removal, outer conductor 207 moves along the length direction of sensitivity induction zone for the contact length with first end 103 and second end 104 changes, thereby change electronic tags's sensitivity, can obtain the displacement volume through reading different sensitivities.

Referring to fig. 5, fig. 5 is a structural diagram of a displacement electronic tag according to another embodiment, in which a portion of fig. 5 is a schematic diagram of a state before displacement, and b portion of fig. 5 is a schematic diagram of a state after displacement. Specifically, the displacement electronic tag of this embodiment includes the above-mentioned electronic tag structures 200, and further includes a pulling member 206, an outer conductor 207, a telescopic member 210 and a fixing member 208, the electronic tag structures 200 are arranged in sequence, one end of the telescopic member 210 is connected with the fixing member 208, the other end is connected with the pulling member 206 through the outer conductor 207, the other end of the pulling member 206 is connected with the object to be tested, and the position of the fracture 102 of the telescopic member 210 and the electronic tag structures 200 is opposite.

When the measured object generates displacement, the measured object drives the external conductor 207 and the telescopic piece 210 through the traction piece 206, so that the external conductor 207 is sequentially contacted with the fractures 102 of the electronic tag structures 200 in rows, the corresponding electronic tag structure 200 contacted with the external conductor 207 recovers the information transceiving function, the displacement of the measured object can be obtained by reading the position information of the electronic tag structure 200, and the displacement measurement perception of the measured object is realized.

Referring to fig. 6, fig. 6 is a structural diagram of a first embodiment of the temperature electronic tag of the present application, in which a portion of fig. 6 is a schematic diagram of a state of an initial temperature, and b portion of fig. 6 is a schematic diagram of a state after a temperature is increased. The temperature electronic tag of the embodiment comprises the electronic tag structure 200, and further comprises a container 211 and a pipeline 212, wherein the pipeline 212 is parallel to the length direction of the electronic tag structure 200, the container 211 is arranged at one end of the pipeline 212, and a conductive liquid capable of expanding along with the temperature rise is arranged in the container 211. As an example, mercury may be used as the conductive liquid, and the conductive liquid is illustrated in fig. 6 by hatching for ease of understanding.

The measurement principle of the temperature electronic tag is as follows: the conductive liquid expands along the pipeline 212 when heated and is close to the first end 103 and the second end 104, so that the first end 103 and the second end 104 are communicated with each other, the electronic tag structure 200 recovers the information transceiving function, the conductive liquid moves along the length direction of the sensitivity sensing area along with the expansion of the conductive liquid, the contact length between the conductive liquid and the first end 103 and the contact length between the conductive liquid and the second end 104 are changed, the sensitivity of the electronic tag is changed, and the corresponding temperature can be obtained by reading different sensitivities.

Referring to fig. 7, fig. 7 is a structural diagram of a second embodiment of a temperature electronic tag according to the present application, in which a portion of fig. 7 is a schematic diagram of a state of an initial temperature, and a portion b of fig. 7 is a schematic diagram of a state after the temperature is increased. The temperature electronic tag of the embodiment comprises a plurality of electronic tag structures 200, a container 211 and a pipeline 212, wherein the plurality of electronic tag structures 200 are sequentially arranged, the pipeline 212 extends along the arrangement direction of the electronic tag structures 200 and is communicated with fractures 102 of the plurality of electronic tag structures 200, the container 211 is arranged at one end of the pipeline 212, and conductive liquid capable of expanding along with temperature rise is arranged in the container 211. As an example, mercury may be used as the conductive liquid, and the conductive liquid is illustrated in fig. 7 by hatching for ease of understanding.

When the temperature rises, the conductive liquid is heated to expand along the pipeline 212 and contacts the first end 103 and the second end 104 of the electronic tag structures 200, so that the fractures 102 of the electronic tag structures 200 in the row are sequentially communicated, the information receiving and transmitting functions of the electronic tag structures 200 in the row are recovered, and the corresponding temperature can be obtained by reading the quantity or the position information of the electronic tag structures 200 with the information receiving and transmitting functions.

Referring to fig. 8, fig. 8 is a structural diagram of a third embodiment of a temperature electronic tag according to the present application, in which a portion of fig. 8 is a schematic diagram of a state of an initial temperature, and a portion b of fig. 8 is a schematic diagram of a state after a temperature is increased. The temperature electronic tag of the embodiment includes the electronic tag structure 200, and further includes a container 211, a pipe 212, an external conductor 207, and an elastic member 213, where the pipe 212 extends to the break of the electronic tag structure 200 and is parallel to the length direction of the sensitivity sensing area, the container 211 is disposed at one end of the pipe 212, the elastic member 213 is disposed at one end of the pipe 212 far from the container 211, the elastic member 213 is connected to the external conductor 207, and a gas capable of expanding with a temperature increase is disposed in the container 211, and for convenience of understanding, the gas is indicated by a shaded portion in fig. 8.

The measurement principle of the temperature electronic tag is as follows: the gas expands along the pipe 212 when heated, so that pressure is generated on the outer conductor 207, the elastic member 213 contracts under the pressure, the outer conductor 207 moves along the pipe 212 under the pressure of the gas and is in contact with the first end 103 and the second end 104, so that the first end 103 and the second end 104 are communicated, the electronic tag structure 200 recovers an information transceiving function, along with the expansion of the gas, the outer conductor 207 moves along the length direction of the sensitivity sensing area, the contact length between the outer conductor and the first end 103 and the contact length between the outer conductor and the second end 104 are changed, so that the sensitivity of the electronic tag is changed, and corresponding temperature can be obtained by reading different sensitivities.

Referring to fig. 9, fig. 9 is a structural diagram of a fourth embodiment of the temperature electronic tag of the present application, in which a portion of fig. 9 is a schematic diagram of a state of an initial temperature, and a portion b of fig. 9 is a schematic diagram of a state after a temperature is increased. The temperature electronic tag of the embodiment includes a plurality of the above-mentioned electronic tag structures 200, and further includes a container 211, a pipe 212, an external conductor 207, and an elastic member 213, wherein the plurality of electronic tag structures 200 are sequentially arranged, the pipe 212 extends along the arrangement direction of the electronic tag structures 200 and is communicated with the fractures 102 of the plurality of electronic tag structures 200, the container 211 is disposed at one end of the pipe 212, the elastic member 213 is disposed at one end of the pipe 212, which is far away from the container 211, the elastic member 213 is connected with the external conductor 207, and a gas capable of expanding along with a temperature rise is disposed in the container 211.

When the temperature rises, the gas expands along the pipe 212 when heated, so as to generate pressure on the external conductor 207, the elastic member 213 contracts under the pressure, the external conductor 207 moves along the pipe 212 under the pressure of the gas and contacts with the first end 103 and the second end 104 of the electronic tag structures 200 in rows in sequence, so that the electronic tag structures are communicated with each other, the corresponding electronic tag structures 200 recover the information transceiving function, and the corresponding temperature can be obtained by reading the position information of the electronic tag structures 200 with the information transceiving function.

Referring to fig. 10, fig. 10 is a structural diagram of a fourth embodiment of a temperature electronic tag according to the present application. The liquid level electronic tag of this embodiment includes a plurality of above-mentioned electronic tag structures 200, still includes pipeline 212 and outer conductor 207, and a plurality of electronic tag structures 200 are arranged along the direction of height of liquid level, and pipeline 212 communicates fracture 102 of a plurality of electronic tag structures 200, and outer conductor 207 locates in pipeline 212 and can go up and down along with the liquid level.

Through arranging a plurality of electronic tags structure 200 along the direction of height of liquid level to form the scale, when the liquid level reachd the electronic tags structure 200 that corresponds the height, this electronic tags structure 200 resumes information transceiver function, through the state of reading electronic tags structure 200, can judge the height of liquid level, realizes the measurement to the liquid level.

In this embodiment, the liquid level electronic tag senses the liquid level through the RSSI. It should be noted that RSSI (received Signal Strength indicator) is an indication of the Strength of the received Signal, the heights of the liquid levels are different, and the areas of the conductors near the fracture are different, so that the generated RSSI is different, and the electronic tag structure 200 can obtain the height value of the liquid level according to the RSSI, thereby realizing the measurement of the liquid level.

The embodiment of the present application further provides a detection system, which includes the above-mentioned electronic tag 200, and further includes a reader, a processor, and a terminal, where the reader is configured to read data of the electronic tag, and the processor is configured to process the data and send the data to the terminal. It should be noted that the reader may be an existing reader, the processor may be a processing chip or a single chip, and the terminal may be a display device, a server, or a mobile terminal.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a loop antenna, its characterized in that, be equipped with at least one fracture on the loop antenna, the fracture makes loop antenna loses information transceiver function and forms first end and second end near fracture department at loop antenna, first end and second end accessible make loop antenna resume information transceiver function near outer conductor or radio frequency signal to the perception measures the physical quantity.

2. An electronic tag structure, comprising the loop antenna of claim 1, and further comprising an array antenna, an antenna connection portion, and a substrate, wherein the array antenna and the loop antenna are connected through the antenna connection portion, and the loop antenna, the array antenna, and the antenna connection portion are all disposed on the substrate.

3. The electronic tag structure of claim 2, wherein a cross-sectional opening is formed on the loop antenna, and an RFID chip is disposed at the cross-sectional opening.

4. A displacement electronic tag, which is characterized by comprising the electronic tag structure as claimed in claim 3, and further comprising a traction member, an external conductor, a fixing member, a telescopic member and a traction block, wherein one end of the telescopic member is connected with the fixing member, the other end of the telescopic member is connected with the traction member through the external conductor, the other end of the traction member is connected with a tested object, and the external conductor can be driven by the traction member to move and contact with the first end and the second end.

5. The displacement electronic tag according to claim 4, wherein the electronic tag structure is a plurality of electronic tag structures, the electronic tag structures are arranged in sequence, and the fracture of each electronic tag structure is located on the moving path of the outer conductor.

6. A temperature electronic tag, comprising at least one electronic tag structure according to claim 3, further comprising a container and a conduit, wherein the container is in communication with the conduit, the conduit extends to the fracture of the electronic tag structure, and a conductive liquid capable of expanding with increasing temperature is provided in the container.

7. A temperature electronic tag, comprising at least one electronic tag structure according to claim 3, further comprising a container, a pipe, an external conductor, and an elastic member, wherein the pipe extends to the fracture of the electronic tag structure, the container is disposed at one end of the pipe, the elastic member is disposed at one end of the pipe, which is far away from the container, the elastic member is connected with the external conductor, and a gas capable of expanding along with the temperature rise is disposed in the container.

8. A liquid level electronic tag is characterized by comprising a plurality of electronic tag structures according to claim 3, and further comprising a pipeline and an external conductor, wherein the electronic tag structures are arranged along the height direction of the liquid level, the pipeline is communicated with a plurality of fractures of the electronic tag structures, and the external conductor is arranged in the pipeline and can ascend and descend along with the liquid level.

9. The liquid level electronic tag of claim 8, wherein the electronic tag structure senses liquid level by RSSI.

10. A detection system comprising an electronic tag according to any one of claims 4 to 9, further comprising a reader for reading data of the electronic tag, a processor for processing the data and transmitting the data to the terminal, and a terminal.

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