CN116522982A - Anti-tearing suspension type radio frequency tag - Google Patents
Anti-tearing suspension type radio frequency tag Download PDFInfo
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- CN116522982A CN116522982A CN202310402444.7A CN202310402444A CN116522982A CN 116522982 A CN116522982 A CN 116522982A CN 202310402444 A CN202310402444 A CN 202310402444A CN 116522982 A CN116522982 A CN 116522982A
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- 239000000725 suspension Substances 0.000 title claims description 14
- 230000008878 coupling Effects 0.000 claims abstract description 109
- 238000010168 coupling process Methods 0.000 claims abstract description 109
- 238000005859 coupling reaction Methods 0.000 claims abstract description 109
- 239000000463 material Substances 0.000 claims abstract description 65
- 229910052751 metal Inorganic materials 0.000 claims description 29
- 239000002184 metal Substances 0.000 claims description 29
- 238000005452 bending Methods 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000003993 interaction Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
- 230000001808 coupling effect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07773—Antenna details
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07798—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card part of the antenna or the integrated circuit being adapted for rupturing or breaking, e.g. record carriers functioning as sealing devices for detecting not-authenticated opening of containers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The invention relates to a tearing-proof hanging type radio frequency tag, which comprises a radio frequency chip (1), a coupling feed ring (2), a radiator (3) and a plane material (4), wherein the coupling feed ring (2) is bent and wound on a target object along with the plane material (4) to realize hanging of the designed tearing-proof hanging type radio frequency tag on the target object; the UHF RFID chip impedance can be adapted without changing the radio frequency tag structure in application, and the UHF RFID chip impedance has stable frequency; when the radio frequency tag is hung on target objects of different materials, the resonant frequency and the distance of the radio frequency tag are not changed; and the sensitivity of the radio frequency tag can be adjusted under the condition of not changing the resonance frequency by changing the coupling position of the radio frequency chip (1) and the radiator (3); in addition, the original performance of the radio frequency tag can be destroyed no matter the coupling feed loop (2) or the radiator (3) is destroyed, so that the radio frequency tag is invalid, and the use safety of the radio frequency tag is improved.
Description
Technical Field
The invention relates to a tearing-proof suspension type radio frequency tag, and belongs to the field of radio frequency tags.
Background
In the conventional RFID antenna design, the conjugate matching with the chip needs to be realized by adjusting the structure of the antenna, so that when different chips are used under the same-sized antenna, the design needs to be redesigned; in addition, in the existing REID antenna, when the tag is in contact with objects of different materials, the tag is affected by the materials of different dielectric constants, and the performance (frequency, reading distance and the like) of the tag is changed to different degrees, so that the performance of the existing RFID antenna is affected.
Disclosure of Invention
The invention aims to solve the technical problem of providing the tearing-resistant suspension type radio frequency tag, which adopts a brand new structural design, has high-performance radio frequency operation, and can effectively detect the tearing action of the tag and interrupt the tag operation in time.
The invention adopts the following technical scheme for solving the technical problems: the invention designs a tearing-proof hanging type radio frequency tag which is used for hanging on a target object and comprises a radio frequency chip, a coupling feed loop, a radiator and a plane material;
the radio frequency chip is arranged at one end of the strip-shaped structure of the coupling feed loop; the radiator is a coplanar structure formed by bending a single metal wire with a preset length in an S shape, a strip-shaped notch with a preset length and a preset width is formed in the S-shaped structure, and the preset width of the strip-shaped notch is larger than the width of the strip-shaped structure of the coupling feed loop; the other end of the coupling feed loop strip structure is positioned at the opening position of the strip-shaped notch in the radiator;
based on the fact that the end of the radio frequency chip on the coupling feed ring strip-shaped structure is located in the direction away from the radiator, and when the coupling feed ring and the radiator are in a coplanar state, the shape and the size of the coupling feed ring and the shape and the size of the integral structure of the radiator are matched with each other, and the coupling feed ring and the integral structure of the radiator are arranged on the surface of the plane material in the corresponding shape edge; the coupling feed ring is bent along with the bending of a partial section on the surface material arranged on the coupling feed ring;
the end of the radio frequency chip arranged on the coupling feed loop strip-shaped structure is bent along with the plane material arranged in the direction of the strip-shaped notch in the radiator and wound on the target object, so that the end of the radio frequency chip arranged on the coupling feed loop strip-shaped structure is connected to a preset position in the strip-shaped notch in the radiator, and a local section of the direction of the end of the radio frequency chip arranged on the coupling feed loop strip-shaped structure is arranged in the strip-shaped notch in the radiator, so that the suspension of the anti-tearing suspension type radio frequency tag on the target object is realized.
As a preferred technical scheme of the invention: the radiator is a coplanar axisymmetric structure formed by bending a single metal wire in an S shape, two ends of the metal wire are positioned at two sides of the symmetry axis, and a strip-shaped notch with the width larger than that of the strip-shaped structure of the coupling feed loop along the direction of the symmetry axis is formed at the position of the metal wire corresponding to the symmetry axis.
As a preferred technical scheme of the invention: the straight line where the coupling feed loop bar structure is located is collinear with the straight line where the direction of the symmetry axis of the radiator is located.
As a preferred technical scheme of the invention: in the structure that the coupling feed ring is wound on the target object along with the bending of the plane material, the coupling feed ring is contacted with the periphery of the corresponding surface of the target object along with the inner side surface of the integral structure of the upper partial section of the plane material.
As a preferred technical scheme of the invention: the connection strength between the coupling feed ring and the surface of the plane material and the connection strength between the inner side surface of the integral structure of the coupling feed ring and the upper partial section of the plane material arranged on the coupling feed ring and the surface of the radiator and the corresponding surface of the target object are smaller than the connection strength between the coupling feed ring and the corresponding surface of the target object.
As a preferred technical scheme of the invention: the radio frequency chip is arranged at one end of the coupling feed loop strip structure in a binding or wire bonding mode.
As a preferred technical scheme of the invention: the coupling feed ring and the radiator are respectively arranged on the surface of the surface material in a glue adhesion mode.
As a preferred technical scheme of the invention: the coupling feed ring and the radiator are made of easily-torn metal materials.
As a preferred technical scheme of the invention: the easily-torn metal material is conductive ink or a fragile aluminum film.
As a preferred technical scheme of the invention: the surface material is made of easily shredded materials.
Compared with the prior art, the tearing-resistant suspension type radio frequency tag has the following technical effects:
the invention relates to a tearing-proof hanging type radio frequency tag, which comprises a radio frequency chip, a coupling feed ring, a radiator and a plane material, wherein the coupling feed ring is connected with each other according to the design scheme, is wound on a target object along with the plane material in a bending way, and enables the end of the radio frequency chip on a strip-shaped structure of the coupling feed ring to be arranged at a preset depth position in a strip-shaped notch in the radiator, so that the hanging of the tearing-proof hanging type radio frequency tag on the target object is realized; in practical application, the same radio frequency tag can be adapted to various UHF RFID chip impedances without changing the radio frequency tag structure, and the frequency can be stabilized in a certain interval; when the radio frequency tag is hung on target objects of different materials, the resonant frequency and the distance of the radio frequency tag are not changed; the sensitivity of the radio frequency tag can be adjusted under the condition of not changing the resonance frequency by changing the coupling position of the end of the radio frequency chip on the coupling feed ring and the radiator in the radio frequency tag, so that the radio frequency reading distance is changed; in addition, when the radio frequency tag is taken down from a hung target object, the original performance of the radio frequency tag can be destroyed no matter the coupling feed loop or the radiator is destroyed, so that the radio frequency tag is invalid, and then an alarm is given out in an induction mode, so that the use safety of the radio frequency tag is improved.
Drawings
FIG. 1 is a schematic diagram of a design of a tear-resistant hanging radio frequency tag of the present invention;
FIG. 2 is a schematic illustration of bending in a design of a tear-resistant hanging radio frequency tag application of the present invention;
FIG. 3 is a schematic diagram of the resonant frequency of the RF tag after it is bonded to RF chips of different manufacturers;
FIG. 4 is a schematic diagram of a tear-resistant hanging radio frequency tag of the present invention hanging in a bent form on a target metal object parallel thereto;
FIG. 5 is a schematic illustration of a design of the present invention for a tear-resistant hanging radio frequency tag to hang bent over a bent target metal object;
FIG. 6 is a schematic diagram showing the performance of the anti-tearing hanging radio frequency tag according to the present invention, which is folded and hung on different shapes and materials;
FIG. 7 is a schematic diagram of a RF chip in the design of the present invention at different predetermined depth positions within a strip-shaped recess in a radiator;
fig. 8 is a schematic diagram showing the comparison of the read distance performance of the rf chip in the radiator according to the present invention at different predetermined depth positions in the strip-shaped recess.
The radio frequency chip 1, the coupling feed ring 2, the radiator 3 and the plane material 4.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the drawings.
The invention designs a tearing-proof hanging type radio frequency tag which is used for hanging on a target object and comprises a radio frequency chip, a coupling feed loop 2, a radiator 3 and a plane material 4 in practical application.
As shown in fig. 1, the coupling feed loop 2 has a strip structure, and the radio frequency chip is arranged at one end of the strip structure of the coupling feed loop 2 in a binding or wire bonding manner; in practical application, for the specific structural design of the radiator 3, a coplanar axisymmetric structure formed by bending a single metal wire with a preset length in an S shape can be designed, two ends of the metal wire are positioned at two sides of a symmetric axis, the positions of the metal wire corresponding to the symmetric axis form a strip-shaped notch with preset length and preset width along the symmetric axis direction, and the preset width of the strip-shaped notch is larger than the strip-shaped structure width of the coupling feed loop 2; the other end of the coupling feed loop 2 on the strip-shaped structure is located at the open mouth of the strip-shaped recess in the radiator 3.
As shown in fig. 1, based on the fact that the end of the radio frequency chip on the strip-shaped structure of the coupling feed ring 2 is located in the direction away from the radiator 3, and when the coupling feed ring 2 and the radiator 3 are in a coplanar state, the shape and the size of the integral structure of the coupling feed ring 2 and the radiator 3 are matched with the shape and the size of the plane material 4, and the edges of the integral structure of the coupling feed ring 2 and the radiator 3 are arranged on the surface of the plane material 4 in the corresponding shape; the coupling feed loop 2 is bent along with bending of a partial section on the surface material 4 on which it is arranged.
Regarding the arrangement of the coupling feed ring 2 and the radiator 3 on the surface material 4, in practical application, the integral structure of the coupling feed ring 2 and the radiator 3 is arranged on the surface of the surface material 4 with a large area, and the surface material 4 with the large area is cut according to the outline of the integral structure of the coupling feed ring 2 and the radiator 3, namely, the surface material with the shape and the size which are matched with the shape and the size of the integral structure of the coupling feed ring 2 and the radiator 3 is obtained.
As shown in fig. 2, fig. 4, fig. 5 and fig. 7, based on the fact that the end of the radio frequency chip on the strip-shaped structure of the coupling feed ring 2 is bent along with the surface material 4 to be arranged in the direction of the strip-shaped notch in the radiator 3 and wound on the target object, the end of the radio frequency chip on the strip-shaped structure of the coupling feed ring 2 is connected to a preset position in the strip-shaped notch in the radiator 3, and a local section of the direction of the end of the radio frequency chip on the strip-shaped structure of the coupling feed ring 2 is distributed along the inside of the strip-shaped notch in the radiator 3, so that the suspension of the anti-tearing suspension type radio frequency tag on the target object is realized.
Based on the design of the tearing-proof suspension type radio frequency tag, the optimal technical scheme is further designed, and the straight line where the strip-shaped structure of the coupling feed loop 2 is positioned is collinear with the straight line where the direction of the symmetry axis of the radiator 3 is positioned; in the structure that the coupling feed loop 2 is bent along with the plane material 4 and wound on the target object, the inner side surface of the whole structure of the coupling feed loop 2 and the upper partial section of the plane material 4 is further designed to be contacted with one periphery of the corresponding surface of the target object.
In the connection between the coupling feed ring 2 and the radiator 3 and the surface of the plane material 4, in practical application, the coupling feed ring 2 and the radiator 3 are respectively arranged on the surface of the plane material 4 in a glue adhesion mode, and the adhesion force between the coupling feed ring 2 and the surface of the plane material 4 and between the coupling feed ring 2 and the radiator 3 is smaller than the adhesion force between the inner side surface of the integral structure of the upper part section of the plane material 4 and the corresponding surface of the target object.
In practical application, the coupling feed ring 2 and the radiator 3 are made of easily-torn metal materials, such as conductive ink or fragile aluminum films; the surface material 4 is made of easily shredded materials, such as paper.
The anti-tearing suspension type radio frequency tag has four characteristics in practical application, namely, the resonance frequency of the radio frequency tag is not influenced by chips, namely, chips of factories such as NXP/Impinj/Alien and the like are respectively bound on the antennas under the same antennas, the resonance frequency is shown in figure 3, and after the radio frequency tag is bound with radio frequency chips of different factories, the resonance frequency is stabilized within the interval of 915-925MHz, so that the radio frequency tag designed in the invention can be matched with any UHF RFID chip, and therefore, the design scheme of the radio frequency tag can be adapted to various RFID chips on the market under the condition of not changing the antennas.
The performance of the radio frequency tag is not affected by contact substances, namely, the radio frequency tag designed by the invention is generally hung on a target object in actual use, so that the coupling feed loop 2 part needs to be in close contact with the surface of the target object, and the target object can be made of metal or liquid-containing plastic and the like, as shown in fig. 4; conventional radio frequency tags are affected by object substances after being contacted with an object, the performance of the radio frequency tags can change to different degrees, and particularly when the radio frequency tags are contacted with a metal object or liquid, the performance of the radio frequency tags can be weakened sharply. The radio frequency tag designed by the invention is not affected by direct contact of substances when being contacted with metal or liquid, but the coupling effect between a metal object and the radiator 3 and the absorption effect of the liquid on electromagnetic waves are unavoidable.
Taking a radio frequency chip of Impinj as an example, as shown in fig. 6, when the radio frequency tag designed in the invention is hung on a metal substance parallel to the radio frequency tag, the resonant frequency of the radio frequency tag shifts to a low frequency band, and the sensitivity and the reading distance in the 915-925MHz frequency band are reduced to a certain extent, which is mainly formed by the coupling effect between the metal substance and the metal radiator 3 and is not caused by the contact of the coupling feed loop 2; as shown in fig. 5, the radio frequency tag designed by the invention is hung on a bent metal target object, such as a bent metal object, and the part of the metal object hung by the radio frequency tag is parallel to the width direction of the metal radiator 3, as shown in fig. 6, the performance of the radio frequency tag obviously tends to the performance of free space, which is the first demonstration of the second characteristic; in addition, when the radio frequency tag is hung on a plastic target object containing liquid, the performance curve and the free space of the radio frequency tag are almost consistent, which means that the original performance of the radio frequency tag is not affected after the coupling feed loop 2 is contacted with the target object, and the characteristic is the second demonstration of the characteristic.
The third feature is that the preset depth position of the radio frequency chip in the strip-shaped notch in the radiator 3 can control the reading distance of the radio frequency tag, but the resonant frequency of the radio frequency tag cannot be changed, and the radio frequency tag has different requirements on performance in different application scenes. Generally, after a radio frequency tag is determined, the performance of the radio frequency tag is also determined immediately and cannot be changed freely, and when the radio frequency tag is used in other scenes, other radio frequency tags are required to be replaced again due to the fact that the performance cannot be changed, so that the complexity of application is greatly increased;
the radio frequency tag designed by the invention can realize different reading distance performances without changing the resonance frequency by changing the preset depth position of the radio frequency chip in the strip-shaped notch in the radiator 3 as shown in figure 7. When the position of the radio frequency chip in the strip-shaped notch in the radiator 3 moves from normal to upper in sequence, as shown in fig. 8, the resonance frequency of the radio frequency tag is stabilized in the range of 915-925MHz, and the reading distance is reduced in sequence. Therefore, the reading distance of the radio frequency tag can be freely controlled by adjusting the position of the radio frequency chip in the strip-shaped notch in the radiator 3 after the coupling feed ring 2 is bent, so that the radio frequency tag is suitable for different application scenes.
The reading distance of the radio frequency tag can be reduced to different degrees by adjusting the position of the radio frequency chip in the strip-shaped notch in the radiator 3, and if the upper limit of the reading capacity of the radio frequency tag is required to be integrally improved, the following scheme can be adopted:
when the size and the structure of the radiator 3 are not changed, materials with higher conductivity, such as aluminum, gold, silver, copper and the like, can be adopted to manufacture the radiator 3;
2, when the material of the radiator 3 is not changed, the gain and efficiency of the radiator 3 can be improved by increasing the size of the radiator 3, so that the reading is improved, and the principle that the increased size needs to be satisfied is as follows: the self-resonant frequency of the radiator 3 is unchanged before and after the increase.
And fourthly, the radio frequency tag has the tearing-proof effect, and the radio frequency chip is provided with a unique identification code, can be used as an identification code of an article and is used for identification and theft prevention. The UHF RFID tag anti-theft principle is as follows: when the radio frequency chip and the antenna are well installed and properly matched, normal communication and interaction can be performed in a radiation field sent by the radio frequency reader-writer, but after a certain part of the antenna structure is destroyed, the original installation and matching are changed, and when the radio frequency tag in the radiation field of the radio frequency reader-writer cannot be normally communicated and delivered, the background of the system sends an alarm due to the loss of data.
When the designed anti-tearing hanging radio frequency tag is used, the coupling feed ring 2 needs to penetrate through a target object to be hung, the position of the radio frequency chip in a strip-shaped notch in the radiator 3 is precisely controlled after the external dimension of the plane material 4 which is cut in advance is bent, then the coupling feed ring 2 is closely contacted with the surface of the target object, in order to ensure the anti-tearing effect of the designed radio frequency tag, the plane material 4 can be made of materials which are easy to tear, such as paper, and the like, metals used for manufacturing the coupling feed ring 2 and the radiator 3 are fragile, such as conductive ink or fragile aluminum film, and the like, the metals are adhered on the plane material, and the adhesion force between the coupling feed ring 2 and the radiator 3 and the plane material is smaller than the adhesion force between the coupling feed ring and the hanging material. If the radio frequency tag is removed from the target object, the coupling feed loop 2 of the radio frequency tag must be cut off, and at this time, there are 2 cases of cutting off: firstly, when the coupling feed loop 2 is cut off, a certain part of the coupling feed loop 2 is directly destroyed, a closed loop formed between the radio frequency chip and the coupling feed loop 2 is invalid, the communication and interaction capacity of the radio frequency tag in a radiation field of the radio frequency reader-writer is zero, and at the moment, the radio frequency reader-writer starts a background alarm due to losing the information of the radio frequency tag; and secondly, the coupling feed ring 2 and the radiator 3 are just separated without damage when the coupling feed ring is cut off, at the moment, the communication and interaction capacity of the radio frequency tag is greatly reduced due to the fact that the radiator 3 with far-field radiation function is lost, if the communication and interaction range is insufficient to trigger the radio frequency reader-writer, the background alarms, if the communication and interaction capacity still meets the normal range of the radio frequency reader-writer, the background cannot alarm, at the moment, if a target object is required to be taken away, the coupling feed ring 2 is required to be separated from the target object, and further, because the adhesion between the coupling feed ring 2 and the target object is greater than that between a metal wire and a plane material 4, part of the metal wire on the coupling feed ring 2 is required to be separated from the plane material 4, and then the structure of the coupling feed ring 2 is damaged, so that a loop is invalid, and the communication and interaction capacity is zero.
From the above analysis, it can be seen that: the anti-tearing and anti-theft effects can be perfectly realized by adopting the fragile surface material 4 and the metal wires and the difference of stripping force between different materials.
The anti-tearing hanging type radio frequency tag designed by the technical scheme comprises a radio frequency chip, a coupling feed ring 2, a radiator 3 and a plane material 4, wherein the coupling feed ring 2 is bent along with the plane material 4 and wound on a target object according to the design scheme, and the preset depth position of the end of the coupling feed ring 2, at which the radio frequency chip is arranged, in a strip-shaped notch in the radiator 3 is formed, so that the hanging of the designed anti-tearing hanging type radio frequency tag on the target object is realized; in practical application, the same radio frequency tag can be adapted to various UHF RFID chip impedances without changing the radio frequency tag structure, and the frequency can be stabilized in a certain interval; when the radio frequency tag is hung on target objects of different materials, the resonant frequency and the distance of the radio frequency tag are not changed; and the sensitivity of the radio frequency tag can be adjusted under the condition of not changing the resonance frequency by changing the coupling position of the end of the radio frequency chip on the coupling feed loop 2 and the radiator 3 in the radio frequency tag, so that the radio frequency reading distance is changed; in addition, when the radio frequency tag is taken down from a hung target object, the original performance of the radio frequency tag can be destroyed no matter the coupling feed loop 2 or the radiator 3 is destroyed, so that the radio frequency tag is invalid, and then an alarm is given out in an induction mode, so that the use safety of the radio frequency tag is improved.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides a prevent tearing suspension type radio frequency label for hang on target object, its characterized in that: the antenna comprises a radio frequency chip (1), a coupling feed loop (2), a radiator (3) and a plane material (4);
the coupling feed ring (2) is of a strip-shaped structure, and the radio frequency chip (1) is arranged at one end of the strip-shaped structure of the coupling feed ring (2); the radiator (3) is a coplanar structure formed by bending a single metal wire with a preset length in an S shape, a strip-shaped notch with a preset length and a preset width is formed in the S-shaped structure, and the preset width of the strip-shaped notch is larger than the width of the strip-shaped structure of the coupling feed loop (2); the other end of the coupling feed ring (2) on the strip-shaped structure is positioned at the opening position of the strip-shaped notch in the radiator (3);
based on the fact that the end of the radio frequency chip (1) on the strip-shaped structure of the coupling feed ring (2) is located in the direction away from the radiator (3), and when the coupling feed ring (2) and the radiator (3) are in a coplanar state, the shape and the size of the integral structure of the coupling feed ring (2) and the radiator (3) are matched with the shape and the size of the plane material (4), and the integral structure of the coupling feed ring (2) and the radiator (3) is arranged on the surface of the plane material (4) in the edge of the corresponding shape; the coupling feed ring (2) is bent along with the bending of a partial section on the surface material (4) arranged on the coupling feed ring;
the end of the radio frequency chip (1) arranged on the strip-shaped structure based on the coupling feed ring (2) is bent along with the plane material (4) arranged in the direction of the strip-shaped notch in the radiator (3) and wound on the target object, so that the end of the radio frequency chip (1) arranged on the strip-shaped structure of the coupling feed ring (2) is connected to the preset position in the strip-shaped notch in the radiator (3), and the local section of the direction of the end of the radio frequency chip (1) arranged on the strip-shaped structure of the coupling feed ring (2) is distributed along the inside of the strip-shaped notch in the radiator (3), and the suspension of the anti-tearing suspension type radio frequency tag on the target object is realized.
2. A tear-resistant hanging radio frequency tag according to claim 1, wherein: the radiator (3) is a coplanar axisymmetric structure formed by bending a single metal wire in an S shape, two ends of the metal wire are positioned at two sides of the symmetry axis, and a strip-shaped notch with the width larger than the width of the strip-shaped structure of the coupling feed loop (2) along the direction of the symmetry axis is formed at the position of the metal wire corresponding to the symmetry axis.
3. A tear-resistant hanging radio frequency tag according to claim 2, wherein: the straight line where the strip-shaped structure of the coupling feed ring (2) is positioned is collinear with the straight line where the direction of the symmetry axis of the radiator (3) is positioned.
4. A tear-resistant hanging radio frequency tag according to claim 1, wherein: in the structure that the coupling feed ring (2) is wound on the target object along with the surface material (4), the inner side surface of the integral structure of the coupling feed ring (2) and the upper partial section of the surface material (4) is contacted with one periphery of the corresponding surface of the target object.
5. The tear-resistant hanging radio frequency tag of claim 4, wherein: the connection strength between the coupling feed ring (2) and the surface of the plane material (4) and the connection strength between the radiator (3) and the corresponding surface of the target object are smaller than the connection strength between the coupling feed ring (2) and the inner side surface of the integral structure of the upper partial section of the plane material (4) arranged on the coupling feed ring.
6. A tear-resistant hanging radio frequency tag according to claim 1, wherein: the radio frequency chip (1) is arranged at one end of the strip-shaped structure of the coupling feed ring (2) in a binding or wire bonding mode.
7. A tear-resistant hanging radio frequency tag according to claim 1, wherein: the coupling feed ring (2) and the radiator (3) are respectively arranged on the surface of the surface material (4) in a glue adhesion mode.
8. A tear-resistant hanging radio frequency tag according to claim 1, wherein: the coupling feed ring (2) and the radiator (3) are made of easily-torn metal materials.
9. The tear-resistant hanging radio frequency tag of claim 8, wherein: the easily-torn metal material is conductive ink or a fragile aluminum film.
10. A tear-resistant hanging radio frequency tag according to claim 1, wherein: the surface material (4) is made of easily shredded materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310402444.7A CN116522982A (en) | 2023-04-17 | 2023-04-17 | Anti-tearing suspension type radio frequency tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310402444.7A CN116522982A (en) | 2023-04-17 | 2023-04-17 | Anti-tearing suspension type radio frequency tag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116522982A true CN116522982A (en) | 2023-08-01 |
Family
ID=87407515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310402444.7A Pending CN116522982A (en) | 2023-04-17 | 2023-04-17 | Anti-tearing suspension type radio frequency tag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116522982A (en) |
-
2023
- 2023-04-17 CN CN202310402444.7A patent/CN116522982A/en active Pending
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