CN114912561A - Double-frequency disposable conversion anti-counterfeit label and method based on liquid metal circuit - Google Patents

Double-frequency disposable conversion anti-counterfeit label and method based on liquid metal circuit Download PDF

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Publication number
CN114912561A
CN114912561A CN202210416604.9A CN202210416604A CN114912561A CN 114912561 A CN114912561 A CN 114912561A CN 202210416604 A CN202210416604 A CN 202210416604A CN 114912561 A CN114912561 A CN 114912561A
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China
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frequency
circuit
antenna
dual
layer
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Chinese (zh)
Inventor
王唯
杨余恺晨
段佳宇
马新达
张淮清
侯世英
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Chongqing University
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Chongqing University
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Priority to CN202210416604.9A priority Critical patent/CN114912561A/en
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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
    • G06K19/077—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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10297—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
    • H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Security & Cryptography (AREA)
  • Details Of Aerials (AREA)

Abstract

The invention discloses a double-frequency disposable conversion anti-counterfeit label based on a liquid metal circuit and a method thereof, wherein the double-frequency disposable conversion anti-counterfeit label comprises a first antenna layer, a flexible material isolation layer and a second antenna layer which are arranged from top to bottom, an air through hole is formed in the middle of the flexible material isolation layer, a bulge is arranged at the bottom of the first antenna layer, an accommodating groove matched with the bulge is formed in the upper surface of the second antenna layer, the bulge penetrates through the air through hole and is inserted into the accommodating groove, two ends of the air through hole are respectively provided with a non-joule magnetostrictive magnetic sheet, an RFID ultrahigh frequency antenna made of liquid metal is arranged between the non-joule magnetostrictive magnetic sheets and the bulge, a circuit groove is formed in the bottom of the accommodating groove, the shape of the circuit groove is matched with that of the NFC ultrahigh frequency antenna, and the RFID ultrahigh frequency antenna is connected with a double-frequency module. The tag of the invention adopts liquid metal to manufacture the antenna, and has a one-time conversion function of the dual-frequency band antenna which is driven by the non-joule magnetostrictive magnet, thereby realizing the multifunctional application of the tag in different periods of products.

Description

Double-frequency disposable conversion anti-counterfeit label and method based on liquid metal circuit
Technical Field
The invention relates to the technical field of logistics, in particular to a dual-frequency disposable conversion anti-counterfeit label based on a liquid metal circuit and a method.
Background
Since the commodity economy is developed at a high speed, counterfeit and shoddy commodities generally exist in the market, the vital interests of enterprises and consumers are seriously endangered, and the national economic order is influenced. In recent years, electronic tags based on RFID and NFC technologies have become mainstream anti-counterfeit tags and occupy the market.
The RFID technology carries out non-contact bidirectional data communication in a wireless radio frequency mode, has good medium and long distance identification performance, and is often applied to scenes of intelligent warehousing management of large-scale goods, intelligent sale of goods and the like.
The NFC technology is integrated and developed in the RFID and interconnection technology, and is used for realizing short-distance non-contact high-frequency data exchange. In recent years, mobile phones with NFC technology are gradually popularized, so that data exchange modes between users and the outside are enriched to a great extent, and a relatively convenient interaction means is provided.
Non-joule magnetostrictive magnets undergo large changes in length and volume when placed in a magnetic field. The conventional magnetostrictive material is limited by joule magnetostriction and can only be used for applying force in a single direction, and the non-joule magnetostrictive magnet can expand in all directions at the same time and can be used as an omnidirectional brake.
The liquid metal is an amorphous flowable liquid metal, is in a liquid state at normal temperature, has good conductivity and is easy to destroy, so that the liquid metal is difficult to copy and transfer. Compared with the traditional circuit, the circuit manufactured based on the liquid metal has more flexibility and is replaceable and modifiable, and free conversion among different circuits can be realized through proper physical driving and constraint.
The prior art has the defects that most of the wires in the existing anti-counterfeiting label circuit are made of copper foil, so that the anti-counterfeiting label circuit is not easy to damage, is easy to be maliciously transferred for secondary use, and is greatly discounted in anti-counterfeiting performance. And traditional liquid metal label operating frequency range is single, can't realize NFC, RFID function organic combination, and the label practicality is lacked.
Disclosure of Invention
In view of at least one defect of the prior art, the invention aims to provide a dual-frequency disposable conversion anti-counterfeit label based on a liquid metal circuit, the anti-counterfeit label adopts the liquid metal circuit to manufacture an antenna circuit, the liquid metal antenna circuit is easy to damage, the label is prevented from being maliciously transferred for secondary use, and the dual-frequency antenna disposable conversion function using a non-joule magnetostrictive magnet as a drive is provided, so that the multifunctional application of the label in different periods of products is realized, and the practicability and the anti-counterfeit performance of the electronic label are greatly improved.
In order to achieve the purpose, the invention adopts the following technical scheme: a double-frequency disposable conversion anti-counterfeit label based on a liquid metal circuit comprises a first antenna layer, a flexible material isolation layer and a second antenna layer which are arranged from top to bottom, wherein base materials of the first antenna layer and the second antenna layer are both made of flexible materials, a strip-shaped air through hole is formed in the middle of the flexible material isolation layer, a bulge is arranged at the bottom of the first antenna layer, a containing groove matched with the bulge is formed in the upper surface of the second antenna layer, the bulge penetrates through the center of the air through hole and is inserted into the containing groove and abutted against the bottom of the containing groove, the width of the bulge is matched with the width of the air through hole, two ends of the air through hole are respectively provided with a non-joule magnetostrictive magnetic sheet, an RFID ultrahigh frequency antenna circuit is arranged at the air through hole part between the non-joule magnetostrictive magnetic sheet and the bulge, and the RFID ultrahigh frequency antenna is made of liquid metal and is adhered to the bottom of the first antenna layer, the bottom of the accommodating groove is provided with a circuit groove, the shape of the circuit groove is matched with that of the NFC high-frequency antenna circuit, the RFID ultrahigh-frequency antenna circuit is connected with the double-frequency module, when the non-joule magnetostrictive magnetic sheet is acted by an external magnetic field, the volume of the antenna expands to increase the distance between the first antenna layer and the second antenna layer facing the air through hole, so that the bulge is pulled out of the accommodating groove, the non-joule magnetostrictive magnetic sheet also expands towards the bulge to damage the RFID ultrahigh frequency antenna circuit, and the liquid metal for manufacturing the RFID ultrahigh frequency antenna circuit is pushed into the accommodating groove, when the external magnetic field is removed, the volume of non-joule magnetostriction magnetic sheet takes place to reply, and the arch is inserted once more and is held the recess and with the bottom butt that holds the recess, with liquid metal crowded circuit recess in, form NFC high frequency antenna circuit, NFC high frequency antenna circuit connects the dual-frenquency module.
The dual-frequency module comprises an RFID ultrahigh frequency chip and an NFC high frequency chip, the RFID ultrahigh frequency chip is fixedly arranged on the upper surface of the first antenna layer, the RFID ultrahigh frequency chip is connected with an RFID ultrahigh frequency antenna circuit through a wire penetrating through the first antenna layer, the NFC high frequency chip is fixedly arranged on the lower surface of the second antenna layer, and the NFC high frequency chip is connected with the NFC high frequency antenna circuit through a wire penetrating through the second antenna layer.
The dual-frequency module is a dual-frequency chip, the dual-frequency chip is fixedly arranged on the upper surface of the first antenna layer, and the dual-frequency chip is connected with the RFID ultrahigh-frequency antenna circuit and the NFC high-frequency antenna circuit through a convex wire penetrating through the first antenna layer.
When removing the external magnetic field, the arch inserts the holding groove again and with the bottom butt that holds the recess, the arch is seamless with the bottom laminating that holds the recess, sets up wire and the contact of NFC high frequency antenna circuit and be connected NFC high frequency antenna circuit in the arch.
The bottom of the first antenna layer is coated with a secondary lyophilic metal coating at a position facing the RFID ultrahigh-frequency antenna circuit, a strong lyophilic metal coating is coated in the circuit groove, and the non-joule magnetostrictive magnetic sheet, the air through hole and the upper surface of the second antenna layer except the circuit groove are coated with a lyophobic metal coating.
A first flexible material layer is arranged on the first antenna layer; a second flexible material layer and a release paper layer are sequentially arranged below the second antenna layer, and an adhesive is arranged on the lower surface of the second flexible material layer.
The first flexible material layer, the first antenna layer, the flexible material isolation layer, the second antenna layer, the second flexible material layer and the release paper layer are sequentially stacked together from top to bottom.
The parts of the first flexible material layer, the first antenna layer, the flexible material isolation layer, the second antenna layer and the second flexible material layer which are in physical contact are all connected in a sealing mode.
The flexible material isolation layer is also made of flexible materials, and the thickness of the flexible material isolation layer is smaller than that of the rest flexible material layers.
In the production stage, the storage logistics stage and the retail management stage of the product, the dual-frequency module is connected with the RFID ultrahigh frequency antenna circuit, the dual-frequency disposable conversion anti-counterfeiting label is in an ultrahigh frequency RFID label mode and supports medium-distance and long-distance large-scale identification, and in the state, the dual-frequency disposable conversion anti-counterfeiting label can be damaged through malicious secondary transfer and loses an identifiable function;
when the dual-frequency disposable conversion anti-counterfeiting label is torn from a product by using an external force, the dual-frequency disposable conversion anti-counterfeiting label is damaged and loses efficacy due to the easily damaged performance of the flexible material and the RFID ultrahigh frequency antenna circuit;
when the anti-counterfeiting label is sold to a customer by a retail party, one-time irreversible conversion is carried out in a strong magnetic environment, the double-frequency module is connected with the NFC high-frequency antenna circuit, and the double-frequency one-time conversion anti-counterfeiting label is in a high-frequency NFC label mode in the using stage of the customer and supports close-range independent close-range interaction with private mobile equipment.
The anti-counterfeiting method of the dual-frequency disposable conversion anti-counterfeiting label based on the liquid metal circuit comprises the following steps:
step 1: a commodity manufacturer produces commodities; a label manufacturer produces a double-frequency disposable conversion anti-counterfeit label; transporting the dual-frequency disposable conversion anti-counterfeit label to a commodity manufacturer for product packaging;
step 2: a commodity manufacturer writes product information into the double-frequency disposable conversion anti-counterfeiting label on the product in a centralized manner;
and step 3: the commodity manufacturer stores the products in a warehouse;
and 4, step 4: is a product shipped from warehouse to retail? If not, turning to the step 5, and if yes, turning to the step 7;
and 5: carrying out medium-distance and long-distance large-scale identification on the double-frequency disposable conversion anti-counterfeiting label on the product in the warehousing process;
and 6: products are managed in a centralized way in the warehousing process; returning to the step 4;
and 7: the product is transported to a retail outlet for sale in a logistics way;
and 8: is a product packaged dual-frequency disposable conversion anti-counterfeit label transferred secondarily? If yes, go to step 9, if no, go to step 10;
and step 9: the double-frequency disposable conversion anti-counterfeit label is damaged and loses efficacy; the product is a fake product, and the process is finished;
step 10: the retail department carries out medium-distance and long-distance large-scale identification on the double-frequency disposable conversion anti-counterfeit label on the product;
step 11: centralized management is carried out on products in the retail process;
step 12: is the product sold? If yes, go to step 13, if no, go to step 8;
step 13: performing one-time irreversible conversion on a double-frequency one-time conversion anti-counterfeiting label packaged by a product in a strong magnetic environment, and converting the label into a high-frequency NFC label mode;
step 14: selling the product to a customer;
step 15: the customer uses private mobile equipment to carry out short-distance information interaction on the double-frequency disposable conversion anti-counterfeit label on the product; and the client acquires the authenticity information of the product.
The invention provides a double-frequency disposable conversion anti-counterfeiting label based on a liquid metal circuit and a method thereof, the anti-counterfeiting label adopts the liquid metal circuit to manufacture an antenna circuit, the label is prevented from being maliciously transferred for secondary use due to the easy destructiveness of the liquid metal antenna circuit, and the label has a disposable conversion function of a double-frequency band antenna which takes a non-joule magnetostrictive magnet as a drive, so that the multifunctional application of the label in different periods of products is realized, and the practicability and the anti-counterfeiting performance of the electronic label are greatly improved.
Drawings
FIG. 1 is an explosion structure diagram of a dual-core dual-frequency structure of a dual-frequency disposable conversion anti-counterfeit label;
FIG. 2 is an explosion structure diagram of a one-core double-frequency structure of a double-frequency disposable conversion anti-counterfeit label;
FIG. 3a is a cross-sectional view of a micro element of an RFID UHF antenna circuit;
FIG. 3b is a schematic diagram of a first antenna layer chip connection;
FIG. 3c is a cross-sectional view of a micro element of the NFC high-frequency antenna circuit;
FIG. 3d is a schematic diagram of a second antenna layer chip connection;
FIG. 4 is a schematic diagram of the connection between the dual-band chip (14) and the RFID UHF antenna circuit and the NFC HF antenna circuit;
fig. 5 is a schematic cross-sectional view of a first antenna layer to a second antenna layer in a normal state;
FIG. 6 is a schematic cross-sectional view illustrating a transition state from a first antenna layer to a second antenna layer;
fig. 7 is a schematic cross-sectional view of a final state from a first antenna layer to a second antenna layer;
FIG. 8 is a schematic view of an anti-counterfeit system of a dual-frequency disposable convertible anti-counterfeit label;
fig. 9 is a flow chart of the anti-counterfeiting function of the dual-frequency disposable conversion anti-counterfeiting label.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in fig. 1-9, a dual-frequency disposable conversion anti-counterfeit label based on a liquid metal circuit comprises a first antenna layer 1, a flexible material isolation layer 2 and a second antenna layer 3 which are arranged from top to bottom, wherein the base materials of the first antenna layer 1 and the second antenna layer 3 are both made of flexible materials, a strip-shaped air through hole 21 is arranged in the middle of the flexible material isolation layer 2, a protrusion 11 is arranged at the bottom of the first antenna layer 1, an accommodating groove 31 matched with the protrusion 11 is arranged on the upper surface of the second antenna layer 3, the protrusion 11 is inserted into the accommodating groove 31 through the center of the air through hole 21 and is abutted against the bottom of the accommodating groove 31, the width of the protrusion 11 is matched with the width of the air through hole 21, two ends of the air through hole 21 are respectively provided with a non-joule magnetostrictive magnetic sheet 4, and an RFID ultrahigh frequency antenna circuit 12 is arranged at the part of the air through hole 21 between the non-joule magnetostrictive magnetic sheet 4 and the protrusion 11, the RFID ultrahigh frequency antenna circuit 12 is made of liquid metal and is adhered to the bottom of the first antenna layer 1, the bottom of the accommodating groove 31 is provided with a circuit groove 311, the shape of the circuit groove 311 is matched with the shape of the NFC high frequency antenna circuit 32, the RFID ultrahigh frequency antenna circuit 12 is connected with a dual-frequency module, when the non-joule magnetostrictive magnetic sheet 4 is acted by an external magnetic field, the volume of the non-joule magnetostrictive magnetic sheet expands, the distance between the first antenna layer 1 and the second antenna layer 3 at the part of the air through hole 21 is increased, the bulge 11 is pulled out of the accommodating groove 31, the non-joule magnetostrictive magnetic sheet 4 also expands towards the bulge 11 to break the RFID ultrahigh frequency antenna circuit 12, the liquid metal which is made into the RFID ultrahigh frequency antenna circuit 12 is pushed into the accommodating groove 31, when the external magnetic field is removed, the volume of the non-joule magnetostrictive magnetic sheet 4 recovers, the bulge 11 is inserted into the accommodating groove 31 again and is abutted to the bottom of the accommodating groove 31, and extruding the liquid metal into the circuit groove 311 to form the NFC high-frequency antenna circuit 32, wherein the NFC high-frequency antenna circuit 32 is connected with the dual-frequency module.
As shown in fig. 1, the air through hole 21 is substantially in the shape of a bar, the middle portion and both ends of which are appropriately deformed according to the shapes of the protrusion 11 and the non-joule magnetostrictive magnetic sheet 4, the protrusion 11 is in the shape of a cylinder, the width of which is adapted to the width of the air through hole 21, and the non-joule magnetostrictive magnetic sheet 4 is adapted to the width of both ends of the air through hole 21.
This disposable conversion antifalsification label adopts liquid metal to make antenna circuit, because the easy destructiveness of liquid metal antenna circuit, prevents that the label from being maliciously shifted the secondary and using. The flexible material is also easily destroyed when being torn by force due to the thin thickness.
The RFID uhf antenna circuit 12 is an open type RFID uhf antenna circuit. The NFC high-frequency antenna circuit 32 employs an embedded NFC high-frequency antenna circuit.
As shown in fig. 1, the dual-frequency module includes an RFID ultrahigh frequency chip 13 and an NFC high frequency chip 33, the RFID ultrahigh frequency chip 13 is disposed on the upper surface of the first antenna layer 1, the RFID ultrahigh frequency chip is connected to the RFID ultrahigh frequency antenna circuit 12 through a wire passing through the first antenna layer 1, the NFC high frequency chip 33 is disposed on the lower surface of the second antenna layer 3, and the NFC high frequency chip 33 is connected to the NFC high frequency antenna circuit 32 through a wire passing through the second antenna layer 3. The NFC high-frequency chip 33 is an embedded NFC high-frequency chip.
As shown in fig. 2, the dual-frequency module is a dual-frequency chip 14, the dual-frequency chip 14 is disposed on the upper surface of the first antenna layer 1, and the dual-frequency chip 14 is connected to the RFID uhf antenna circuit 12 and the NFC hf antenna circuit 32 through a wire passing through the protrusion 11 of the first antenna layer 1.
When the external magnetic field is removed, the protrusion 11 is inserted into the accommodating recess 31 again and abuts against the bottom of the accommodating recess 31, the protrusion 11 is attached to the bottom of the accommodating recess 31 without a gap, and the wire provided in the protrusion 11 is in contact with and connected to the NFC high-frequency antenna circuit 32.
As shown in fig. 1-2, the dual-frequency disposable conversion label is designed with a dual-core dual-frequency conversion structure and a single-core dual-frequency conversion structure, so as to realize disposable conversion of the dual-frequency disposable conversion label and enrich the use functions of the anti-counterfeit label.
The dual-core dual-frequency conversion structure is different from the single-core dual-frequency conversion structure in that the selection of the tag chip is different from the connection mode of the antenna circuit. The dual-core dual-frequency conversion structure requires that the RFID ultrahigh frequency chip 13 is an RFID tag chip compatible with ultrahigh frequency 860-960MHz, and the NFC high frequency chip 33 is an NFC tag chip compatible with high frequency 13.56 MHz; the one-chip dual-frequency conversion structure requires that the dual-frequency chip 14 is an RFID chip compatible with both the UHF 860-960MHz and the HF 13.56 MHz.
Fig. 3b and 3d are schematic diagrams illustrating connection between the RFID uhf chip 13 and the NFC hf chip 33 of the dual-core dual-frequency conversion structure and the RFID uhf antenna circuit 12 and the NFC hf antenna circuit 32, respectively.
Fig. 4 is a schematic diagram illustrating that the dual-frequency chip 14 under the one-core dual-frequency conversion structure is respectively connected with the RFID ultrahigh-frequency antenna circuit 12 and the NFC high-frequency antenna circuit 32 through wires arranged in the protrusion 11.
The bottom of the first antenna layer 1 is coated with a secondary lyophilic metal coating at a position facing the RFID ultrahigh frequency antenna circuit 12, a strong lyophilic metal coating is coated in the circuit groove 311, and the parts of the non-joule magnetostrictive magnetic sheet 4, the air through hole 21 and the upper surface of the second antenna layer 3 except the circuit groove 311 are coated with a lyophobic metal coating.
The strong affinity liquid metal coating has strong adsorption force to the liquid metal. The lyophobic metal coating has substantially no adsorptive force on the liquid metal. The secondary lyophilic metal coating has weaker adsorption force on the liquid metal than the strong lyophilic metal coating, and is easily damaged.
As shown in fig. 3a and 3c, the RFID uhf antenna circuit 12 is made of liquid metal, and is printed on the lower surface of the first antenna layer 1 by a sub-liquid metal coating, so that the stability is not high, and the RFID uhf antenna circuit 12 is easily deformed and damaged by external force. The NFC high-frequency antenna circuit 32 is also a liquid metal, and exists in the circuit groove 311 at the bottom of the accommodating groove 31 in the middle of the second antenna layer 6 by virtue of a strong-affinity liquid metal coating, and the circuit groove 311 is protected by an external flexible material in a normal state, so that the NFC high-frequency antenna circuit 32 is relatively stable, and the circuit cannot be easily damaged by external stress.
The RFID uhf antenna circuit 12 is printed on the lower surface of the first antenna layer 1 by a liquid metal circuit printer and connected to the RFID uhf chip 13.
As shown in fig. 5, the state of the dual-frequency one-time convertible tag is an initial normal state, two non-joule magnetostrictive magnetic sheets 4 are respectively embedded in the first antenna layer 1, the flexible material isolation layer 2 and two sides of the middle of the second antenna layer 4, the flexible materials of the outer contour entity part of the tag are tightly connected and can not be damaged, only the liquid metal on the RFID ultrahigh frequency antenna circuit 12 exists as an antenna circuit carrier, the circuit groove 311 is a hollow groove, and only the circuit form does not have an actual carrier. The protrusion 11 is closely fitted over the circuit recess 311. At this time, the tag is connected with the RFID ultrahigh frequency antenna circuit 12, and medium and long distance information identification can be realized.
As shown in fig. 6, the tag is switched by applying a strong magnetic field, and the state of the tag is switched at this time. Non-joule magnetostriction magnetic sheet 4 will expand rapidly under outside high magnetic field effect, because the constraint effect of label structure and flexible material's deformability, first antenna layer 1, flexible material isolation layer 2 will receive the effect of non-joule magnetostriction magnetic sheet 4 expanding force with second antenna layer 3 for air vent 21 height-increasing in flexible material isolation layer 2, and then make protruding 11 and circuit recess 311 end laminating state. Non-joule magnetostrictive magnetic sheet 4, air vent 21, second antenna layer 3 upper surface are coated with and are dredged liquid metal coating, and non-joule magnetostrictive magnetic sheet 4 is little because of air vent 21 constraint power, will mainly expand to protruding 11 directions, and then produce the contact with RFID hyperfrequency antenna circuit 12, promote unstable liquid metal substrate and continue the inflation, stop until touchhing protruding 11. At this time, the liquid metal on the RFID uhf antenna circuit 12 is all pushed into the receiving groove 31 on the upper surface of the second antenna layer 3. In this state, the NFC high-frequency antenna circuit 32 is not yet formed because no antenna circuit structure has failed completely.
As shown in FIG. 7, the tag is now in the post-transition final state. After the conversion state is finished, the external strong magnetic field is removed, the non-joule magnetostrictive magnetic sheet 4 will contract again, the flexible material will restore to the initial state structure, and the protrusion 11 and the bottom of the accommodating groove 31 enter the attaching state again. The liquid metal material scattered in the accommodating groove 31 on the upper surface of the second antenna layer 6 is compacted into the circuit groove 311 by the protrusions 11, and at the moment, the high-frequency antenna is effective, so that the tag is represented as an NFC tag and has a near field communication identification function. The RFID uhf antenna circuit 12 is destroyed and no substantial circuit carrier is present and fails.
The process is an irreversible process, and once the ultrahigh frequency tag is converted into the high frequency tag, the ultrahigh frequency tag cannot be recovered. Meanwhile, in view of the structural characteristics of the RFID ultrahigh frequency antenna circuit 12 and the NFC high frequency antenna circuit 32, the dual-frequency one-time conversion anti-counterfeit tag has the following characteristics:
1. when the label is in an ultrahigh frequency state, medium and long distance identification can be realized, a label circuit is easy to damage, and the label circuit can be directly failed due to strong external force interference after secondary malicious transfer.
2. When the tag is in a high-frequency state, near field communication identification can be achieved, a tag circuit is not easy to damage, and the tag has good structural strength and long service life.
A first flexible material layer 5 is arranged on the first antenna layer 1; a second flexible material layer 6 and a release paper layer are sequentially arranged below the second antenna layer 3, and an adhesive is arranged on the lower surface of the second flexible material layer 6.
The antenna comprises a first flexible material layer 5, a first antenna layer 1, a flexible material isolation layer 2, a second antenna layer 3, a second flexible material layer 6 and a release paper layer which are sequentially stacked together from top to bottom, and the peripheries of the first flexible material layer, the first antenna layer 1, the flexible material isolation layer 2, the second antenna layer 3, the second flexible material layer and the release paper layer are glued together.
The release paper layer is not shown, and when the label is attached to a commodity, the release paper layer needs to be torn off.
The first layer of flexible material 5 may be provided with product information or the like.
The first flexible material layer 5, the first antenna layer 1, the flexible material isolation layer 2, the second antenna layer 3 and the second flexible material layer 6 are all connected in a sealing mode in the portions in physical contact.
The flexible material isolation layer 2 is also made of flexible material, and the thickness of the flexible material isolation layer is smaller than that of the rest flexible material layer.
As shown in fig. 8, in the product production stage, the warehouse logistics stage, and the retail management stage, the dual-frequency module is connected to the RFID ultrahigh frequency antenna circuit 12, and the dual-frequency disposable conversion anti-counterfeit label is in the ultrahigh frequency RFID label mode and supports medium-distance and long-distance large-scale identification, and in this state, the dual-frequency disposable conversion anti-counterfeit label is damaged by malicious secondary transfer and loses the identifiable function;
when an external force is used to tear the dual-frequency disposable conversion anti-counterfeiting label from the product, the dual-frequency disposable conversion anti-counterfeiting label is damaged and fails due to the easily damaged performance of the flexible material and the RFID ultrahigh frequency antenna circuit 12;
when the anti-counterfeiting label is sold to a customer by a retailer, the anti-counterfeiting label is subjected to one-time irreversible conversion in a strong magnetic environment, the double-frequency module is connected with the NFC high-frequency antenna circuit 32, and the double-frequency one-time conversion anti-counterfeiting label is in a high-frequency NFC label mode in the using stage of the customer and supports close-range interaction with private mobile equipment independently in a close range.
The anti-counterfeiting method of the dual-frequency disposable conversion anti-counterfeiting label based on the liquid metal circuit comprises the following steps:
step 1: a commodity manufacturer produces commodities; a label manufacturer produces a double-frequency disposable conversion anti-counterfeit label; transporting the dual-frequency disposable conversion anti-counterfeit label to a commodity manufacturer for product packaging;
step 2: a commodity manufacturer writes product information into the double-frequency disposable conversion anti-counterfeiting label on the product in a centralized manner;
and step 3: the commodity manufacturer stores the products in a warehouse;
and 4, step 4: is a product shipped from warehouse to retail? If not, turning to the step 5, and if yes, turning to the step 7;
and 5: carrying out medium-distance and long-distance large-scale identification on the double-frequency disposable conversion anti-counterfeiting label on the product in the warehousing process;
and 6: products are managed in a centralized way in the warehousing process; returning to the step 4;
and 7: transporting the product logistics to a retail outlet for sale;
and 8: is a product packaged dual-frequency disposable conversion anti-counterfeit label transferred secondarily? If yes, go to step 9, if no, go to step 10;
and step 9: the double-frequency disposable conversion anti-counterfeit label is damaged and loses efficacy; the product is a fake product, and the process is finished;
step 10: the retail department carries out medium-distance and long-distance large-scale identification on the double-frequency disposable conversion anti-counterfeit label on the product;
step 11: centralized management is carried out on products in the retail process;
step 12: is the product sold? If yes, go to step 13, if no, go to step 8;
step 13: performing one-time irreversible conversion on a double-frequency one-time conversion anti-counterfeiting label packaged by a product in a strong magnetic environment, and converting the label into a high-frequency NFC label mode;
step 14: selling the product to a customer;
step 15: the customer uses private mobile equipment to carry out short-distance information interaction on the double-frequency disposable conversion anti-counterfeit label on the product; the customer obtains the true and false information of the product and the latest dynamics of the manufacturer.
Because the product information and the voucher provided by the merchant are stored in the electronic tag for a long time, the electronic tag is equivalent to an official certificate for the high value-added commodity, and the collection value of the product can be improved. When the user scans the label to obtain the genuine product authentication information, the satisfaction degree of the commodity is improved due to high collection value.
The anti-counterfeiting method of the dual-frequency disposable conversion anti-counterfeiting label based on the liquid metal circuit comprises the following steps of 13: when the non-joule magnetostrictive magnetic sheet 4 is acted by an external magnetic field, the volume of the non-joule magnetostrictive magnetic sheet is expanded, the distance between the first antenna layer 1 and the second antenna layer 3 facing the air through hole 21 is increased, the protrusion 11 is pulled out of the accommodating groove 31, the non-joule magnetostrictive magnetic sheet 4 is also expanded towards the protrusion 11, the RFID ultrahigh frequency antenna circuit 12 is damaged, the liquid metal for manufacturing the RFID ultrahigh frequency antenna circuit 12 is pushed into the accommodating groove 31, when the external magnetic field is removed, the volume of the non-joule magnetostrictive magnetic sheet 4 is restored, the protrusion 11 is inserted into the accommodating groove 31 again and is abutted against the bottom of the accommodating groove 31, the liquid metal is squeezed into the circuit groove 311, the NFC high frequency antenna circuit 32 is formed, and the NFC high frequency antenna circuit 32 is connected with the dual-frequency module.
Finally, it is noted that: the above-mentioned embodiments are only examples of the present invention, and it is a matter of course that those skilled in the art can make modifications and variations to the present invention, and it is considered that the present invention is protected by the modifications and variations if they are within the scope of the claims of the present invention and their equivalents.

Claims (8)

1. A double-frequency disposable conversion anti-counterfeit label based on a liquid metal circuit is characterized by comprising a first antenna layer (1), a flexible material isolation layer (2) and a second antenna layer (3) which are arranged from top to bottom, wherein the base materials of the first antenna layer (1) and the second antenna layer (3) are made of flexible materials, a strip-shaped air through hole (21) is formed in the middle of the flexible material isolation layer (2), a bulge (11) is arranged at the bottom of the first antenna layer (1), an accommodating groove (31) matched with the bulge (11) is formed in the upper surface of the second antenna layer (3), the bulge (11) penetrates through the center of the air through hole (21) and is inserted into the accommodating groove (31) and abutted against the bottom of the accommodating groove (31), two ends of the air through hole (21) are respectively provided with a non-Joule magnetostrictive magnetic sheet (4), and an RFID antenna circuit (12) is arranged between the non-Joule magnetostrictive magnetic sheet (4) and the bulge (11), the RFID ultrahigh-frequency antenna circuit (12) is made of liquid metal and is adhered to the bottom of the first antenna layer (1), a circuit groove (311) is arranged at the bottom of the accommodating groove (31), the shape of the circuit groove (311) is matched with that of the NFC high-frequency antenna circuit (32), the RFID ultrahigh-frequency antenna circuit (12) is connected with the dual-frequency module, when the non-Joule magnetostrictive magnetic sheet (4) is acted by an external magnetic field, the volume of the RFID ultrahigh-frequency antenna circuit expands, the distance between the first antenna layer (1) and the second antenna layer (3) which are opposite to the air through hole (21) is increased, the bulge (11) is pulled out of the accommodating groove (31), the non-Joule magnetostrictive magnetic sheet (4) also expands towards the bulge (11), the RFID ultrahigh-frequency antenna circuit (12) is damaged, and the liquid metal which is made into the RFID ultrahigh-frequency antenna circuit (12) is pushed into the accommodating groove (31), when removing external magnetic field, the volume of non-joule magnetostriction magnetic sheet (4) takes place to reply, and arch (11) insert accommodate recess (31) again and with the bottom butt of accommodating recess (31), form NFC high frequency antenna circuit (32) in crowded circuit recess (311) with liquid metal, and NFC high frequency antenna circuit (32) are connected the dual-frenquency module.
2. The dual-frequency disposable switching antifalsification label based on liquid metal circuit of claim 1, characterized in that: the dual-frequency module comprises an RFID ultrahigh frequency chip (13) and an NFC high frequency chip (33), the RFID ultrahigh frequency chip (13) is arranged on the upper surface of the first antenna layer (1), the RFID ultrahigh frequency chip is connected with an RFID ultrahigh frequency antenna circuit (12) through a wire penetrating through the first antenna layer (1), the NFC high frequency chip (33) is arranged on the lower surface of the second antenna layer (3), and the NFC high frequency chip (33) is connected with an NFC high frequency antenna circuit (32) through a wire penetrating through the second antenna layer (3).
3. The dual-frequency disposable switching antifalsification label based on liquid metal circuit of claim 1, characterized in that: the dual-frequency module is a dual-frequency chip (14), the dual-frequency chip (14) is arranged on the upper surface of the first antenna layer (1), and the dual-frequency chip (14) is connected with the RFID ultrahigh-frequency antenna circuit (12) and the NFC high-frequency antenna circuit (32) through a lead which penetrates through the bulge (11) of the first antenna layer (1).
4. The dual-frequency disposable switching antifalsification label based on liquid metal circuit of claim 1, characterized in that: the bottom of the first antenna layer (1) is coated with a secondary lyophilic metal coating at a position facing the RFID ultrahigh frequency antenna circuit (12), a strong lyophilic metal coating is coated in the circuit groove (311), and the parts of the non-joule magnetostrictive magnetic sheet (4), the air through hole (21) and the circuit groove (311) on the upper surface of the second antenna layer (3) are coated with a lyophobic metal coating.
5. The dual-frequency disposable switching antifalsification label based on liquid metal circuit of claim 1, characterized in that: a first flexible material layer (5) is arranged on the first antenna layer (1); a second flexible material layer (6) and a release paper layer are sequentially arranged below the second antenna layer (3), and an adhesive is arranged on the lower surface of the second flexible material layer (6).
6. The dual-frequency disposable switching antifalsification label based on liquid metal circuit of claim 1, characterized in that: in the production stage, the storage logistics stage and the retail management stage of the product, the dual-frequency module is connected with an RFID ultrahigh frequency antenna circuit (12), the dual-frequency disposable conversion anti-counterfeiting label is in an ultrahigh frequency RFID label mode and supports medium-distance and long-distance large-scale identification, and in the state, the dual-frequency disposable conversion anti-counterfeiting label can be damaged through malicious secondary transfer and loses an identifiable function;
when the anti-counterfeiting label is sold to a customer by a retail party, disposable irreversible conversion is carried out in a strong magnetic environment, the dual-frequency module is connected with the NFC high-frequency antenna circuit (32), the dual-frequency disposable conversion anti-counterfeiting label is in a high-frequency NFC label mode in the using stage of the customer, and close-range interaction with private mobile equipment is supported independently.
7. The anti-counterfeiting method of the dual-frequency disposable conversion anti-counterfeiting label based on the liquid metal circuit, which is characterized in that: the method comprises the following steps:
step 1: a commodity manufacturer produces commodities; a label manufacturer produces a double-frequency disposable conversion anti-counterfeit label; the double-frequency one-time conversion anti-counterfeiting label is transported to a commodity manufacturer for product packaging;
step 2: a commodity manufacturer writes product information into the double-frequency disposable conversion anti-counterfeiting label on the product in a centralized manner;
and step 3: the commodity manufacturer stores the products in a warehouse;
and 4, step 4: is a product shipped from warehouse to retail? If not, turning to the step 5, and if yes, turning to the step 7;
and 5: carrying out medium-distance and long-distance large-scale identification on the double-frequency disposable conversion anti-counterfeiting label on the product in the warehousing process;
step 6: products are managed in a centralized way in the warehousing process; returning to the step 4;
and 7: transporting the product logistics to a retail outlet for sale;
and 8: is a product packaged dual-frequency disposable conversion anti-counterfeit label transferred secondarily? If yes, go to step 9, if no, go to step 10;
and step 9: the double-frequency disposable conversion anti-counterfeit label is damaged and loses efficacy; the product is a fake product, and the process is finished;
step 10: the retail department carries out medium-distance and long-distance large-scale identification on the double-frequency disposable conversion anti-counterfeit label on the product;
step 11: performing centralized management on products in the retail process;
step 12: is the product sold? If yes, go to step 13, if no, go to step 8;
step 13: performing one-time irreversible conversion on a double-frequency one-time conversion anti-counterfeiting label packaged by a product in a strong magnetic environment, and converting the label into a high-frequency NFC label mode;
step 14: selling the product to a customer;
step 15: the customer uses private mobile equipment to carry out short-distance information interaction on the double-frequency disposable conversion anti-counterfeit label on the product; and the client acquires the authenticity information of the product.
8. The anti-counterfeiting method of the dual-frequency disposable conversion anti-counterfeiting label based on the liquid metal circuit, which is characterized in that: step 13 comprises the following steps: when the non-joule magnetostrictive magnetic sheet (4) is acted by an external magnetic field, the volume of the non-joule magnetostrictive magnetic sheet expands, so that the distance between the first antenna layer (1) and the second antenna layer (3) which are opposite to the air through hole (21) is increased, the bulge (11) is pulled out from the accommodating groove (31), the non-joule magnetostrictive magnetic sheet (4) also expands towards the bulge (11), and the RFID ultrahigh frequency antenna circuit (12) is damaged, and the liquid metal which is made into the RFID ultrahigh frequency antenna circuit (12) is pushed into the containing groove (31), when the external magnetic field is removed, the volume of the non-joule magnetostrictive magnetic sheet (4) is recovered, the bulge (11) is inserted into the accommodating groove (31) again and is abutted against the bottom of the accommodating groove (31), the liquid metal is extruded into the circuit groove (311), and forming an NFC high-frequency antenna circuit (32), wherein the NFC high-frequency antenna circuit (32) is connected with the dual-frequency module.
CN202210416604.9A 2022-04-20 2022-04-20 Double-frequency disposable conversion anti-counterfeit label and method based on liquid metal circuit Pending CN114912561A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210416604.9A CN114912561A (en) 2022-04-20 2022-04-20 Double-frequency disposable conversion anti-counterfeit label and method based on liquid metal circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210416604.9A CN114912561A (en) 2022-04-20 2022-04-20 Double-frequency disposable conversion anti-counterfeit label and method based on liquid metal circuit

Publications (1)

Publication Number Publication Date
CN114912561A true CN114912561A (en) 2022-08-16

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CN (1) CN114912561A (en)

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