CN206657374U

CN206657374U - The RFID label tag and rfid chip module of expansible antenna

Info

Publication number: CN206657374U
Application number: CN201621179732.2U
Authority: CN
Inventors: 陈猛; 吕策
Original assignee: Wang Lian Polytron Technologies Inc
Current assignee: Wang Lian Polytron Technologies Inc
Priority date: 2016-11-03
Filing date: 2016-11-03
Publication date: 2017-11-21
Anticipated expiration: 2026-11-03

Abstract

The utility model discloses a kind of RFID label tag of expansible antenna, including a matrix (1), two primary antennas (2) of electrically insulated from one another on matrix (1), and a RFID chip (3) are fitted in.The antenna leads of RFID chip (3) two are stated to electrically connect with two primary antennas (2) respectively；The metal body electrical connection mechanism with required installation is respectively arranged with two primary antennas (2).Due to the metal body of metal product to be extendable to the RFID label antenna to be connected with label chip, the antenna of RFID label tag is significantly increased, improves the sensitivity of RFID label tag, extends the application of RFID label tag.

Description

The RFID label tag and rfid chip module of expansible antenna

Technical field

It the utility model is related to automatic identification field.More particularly to a kind of RFID label tag suitable for expansible antenna, And applicable rfid chip module.

Background technology

Radio frequency identification is RFID (Radio Frequency Identification, RFID) technology, also known as RFID label tag (or electronic tag), it is the communication technology risen a kind of the 1990s, specific objective can be identified simultaneously by radio signals Related data is read and write, without establishing mechanical or optical contact between identifying system and specific objective.

RFID label tag is also known as RF tag, transponder, data medium, is made up of antenna, coupling element and chip.Antenna master To be made up of metal, be embedded into together with a plastic tab in label substrate, be a ultra-thin loop, with the chip in base material Connection.Base material uses ambroin.

RFID system is made up of electronic tag, read write line and application software system etc..After electronic tag enters magnetic field, receive The electromagnetic wave that read write line is sent, the product information of storage in the chips is sent out by the energy that induced-current is obtained, or Actively send the signal of a certain frequency；After read write line reads information and decoded, deliver to application software system and carry out at relevant data Reason.

Electromagnetic wave can penetrate the non-metallic materials such as paper, timber and plastics, carry out penetrability communication, can recognize reading simultaneously Access electronic tag.For non-metallic material, electronic tag may be mounted at any position, and read write line can be read in multiple angles Access evidence, significantly increase the convenience of RFID system application.

Patent law of china document CN204876889U is disclosed a kind of to be matched based on the sensing of RFID intelligent door lock and key System, the internal system encapsulate secondary coil；Termination management module is used for system administration, induction module on door lock, The write-in of information in response matching module on the key.However, as a rule for the sake of security, door leaf and doorframe are all for antitheft door It is made of the panel using integral metal material.And electromagnetic wave can not penetrate metal, the high-frequency ac employed in RFID technique It is actually the metal decking that can not pass through safety door door leaf to change electromagnetic wave, and if using the mode of windowing come for RFID Technology provides the path of electromagnetic wave, then can damage the complete performance of safety door completely.Obvious the prior art only proposes one Individual theory, also without the possibility implemented.At present, electronic tag must be arranged on gold by the prior art in terms of production management Belong to product surface, communicated towards electromagnetic radiation direction with read write line.But for a kind of product of antitheft door, it is raw Product is stacked together often during production, is now influenceed by the metal decking of the front and rear product laminated, hinders electromagnetism The path of ripple, now read write line be difficult to read overlay centre product on electronic tag data.Thus, produced in reality In, when the metal product with electronic tag is stacked together, read write line will be realized while read several electronic tags, to electricity Subtab is fixed on the position of metal product surface and metal product stacks mode and has very high requirement.To production, storage, logistics Management brings many inconvenience.Even if RFID label tag is arranged in doorframe peripheral bead, but hem shape is narrow, can only fixed body The less RFID label tag of product, has limited to the size of antenna, and the size of antenna is a big determinant of RFID label tag performance, day Line is bigger, and the reading distance of RFID label tag is more remote.Therefore the RFID label tag in doorframe peripheral bead is arranged on because antenna is too small, And then the performance of label is limited to.

The content of the invention

The technical problem that the utility model solves is the limitation that RFID technique is applied on metal product, realizes read-write Device all can be with the RFID label tag normal communication on metal product from any angle in communication distance.Reading can be distinguished simultaneously RFID label tag on access different metal product.

Therefore, a kind of RFID label tag of expansible antenna of the present utility model, including RFID chip, the RFID chip two Antenna leads are each electrically connected a primary antenna, in addition to by the gold with required installation respectively on two primary antennas Belong to the electrical connection mechanism of the metal body connection of product.

Specifically, the electrical connection mechanism includes being molded over connecting hole on the primary antenna and through the connecting hole The primary antenna is connected to the fixture of the conductive material on the metal body.

The fixture is preferably screw or rivet.

Further, the RFID chip is fixed on an insulating body, is further fixed on the matrix described in two Primary antenna, it is electrically insulated between two primary antennas.

The primary antenna is fitting metal foil on the matrix, the connecting hole penetrate simultaneously the metal foil and Described matrix.

Preferably, the metal foil is extended on the inwall of the body portion of the connecting hole.

The insulating body is made of polytetrafluoroethylmaterial material.

Above-mentioned technical proposal of the present utility model has advantages below compared with prior art：Primary antenna is divided into two, And the metal body electrical connection mechanism with required installation is respectively arranged with two primary antennas, it is possible thereby to which metal is produced The metal body of product is transformed into the RFID label antenna being connected with label chip, significantly increases the antenna of RFID label tag.Such as tool The metallic door for having antenna function receives the radiofrequency signal that read write line launches and is converted to energy, and the energy of acquisition gives label core Piece is powered.When the energy of acquisition is enough, label chip is activated, and completes corresponding move according to the inquiry of read write line instruction Make, the label information stored on chip is reflected to read write line by the method for backscattered modulation.It is in read write line power In the environment of 32dBm, antenna gain are 9dBic, the farthest identification distance of the single metallic door is up to 12 meters.

Antenna by the metal body of metal product directly as RFID label tag, there is the characteristics of radiation efficiency is high.Overcome Radiation resistance can reduce rapidly when ordinary antennas is close to metal, and resistance is less than 2 ohm, and the real impedance of chip is about 15 Europe Nurse, both mismatch the defects of causing hydraulic performance decline completely.The close influence of metal can effectively be reduced.

The performance of electronic tag is adjusted by applying steel structure, for different metal products, only need to adjust deposited copper size i.e. Can.

Brief description of the drawings

Fig. 1 is the structural representation of the RFID label tag of expansible antenna of the present utility model；

Fig. 2 is the notch arrangement schematic diagram opened in a kind of peripheral bead structure of safety door；

Fig. 3 is that the RFID label tag of expansible antenna of the present utility model is installing the structure after fixing on notch shown in Fig. 2 Schematic diagram.

Wherein reference 1- matrixes, 2- primary antennas, 3-RFID chips, 4- connecting holes, 5- fixing screws, 6- safety Door, 7- notches, 8- mounting holes, 9- breach.

Embodiment

Referring to Fig. 1, the RFID label tag of expansible antenna of the present utility model, include the matrix of a polytetrafluoroethylene (PTFE) material 1, it is fitted in two copper foil primary antennas 2 of electrically insulated from one another in described matrix 1, and a RFID chip 3.The present embodiment In, the RFID chip 3 is fixed on the centre of described matrix 1, and two primary antennas 2 are oppositely disposed at the institute RFID The both sides of chip 3 simultaneously stretch out round about.State 3 liang of antenna leads of RFID chip respectively with two primary antennas 2 Electrical connection.The outer end of two primary antennas 2 is respectively arranged with the metal body electrical connection mechanism of the metal product with being applied. The electrical connection mechanism includes insertion and is molded over connecting hole 4 in the primary antenna 2 and described matrix 1, and through the company Connect the metal fixing screws 5 that the primary antenna 2 is connected on the metal body by hole 4.

Metal body specifically described herein refers to realize that corresponding function forms the hardware of a metal product part. Referring to Fig. 2, in the present embodiment, the metal product is metal safety door 6, then metal body refers to safety door metal door leaf. The edge of the safety door 6 forms bead structure, as shown in dash area in figure.In the peripheral bead of the safety door 6 Open a notch 7 on structure optional position, the notch 7 is conceded the RFID chip 3 and worked required space；In the notch 7 positions for nearby corresponding to the connecting hole 4 form the mounting hole 8 being connected suitable for the fixing screws 5, one of them The mounting hole 8 is the elongated hole extended along the line at the center of two mounting holes 8.The mounting hole 8 is described with extending to The breach 9 of notch 7, the aperture of the mounting hole 8 are slightly less than the smallest radial yardstick of the fixing screws 5, the profit of mounting hole 8 Deformation is either closely coupled in the fixing screws 5 caused by the breach 9.

Referring to Fig. 3, the RFID label tag of the expansible antenna shown in Fig. 1 is placed on the notch 7, and make the connection Hole 4 aligns with the mounting hole 8 being molded on the safety door 6.The connecting hole 4 is passed through with fixing screws 5, and is squeezed into described The fixing screws 5 are closely made to be electrically connected with the safety door 6 by screw thread engagement in mounting hole 8.And therefore by described in 3 groups of RFID chip, which is connected to, to be molded on the notch 7 of the safety door 6.Because the nut of fixing screws 5 closely presses On the primary antenna 2, this completes the electrical connection between the RFID chip 3 and metal safety door 6.Now, it is golden Belong to the antenna for being monolithically fabricated the RFID chip 3 of safety door 6, thus the metal safety door 6 and the RFID chip 3 one It is same to constitute a RFID label tag.

In the above-described embodiments, the metal safety door 6 with antenna function receives the radiofrequency signal that read write line launches, And energy is derived from, and then powered with the energy to the RFID chip 3.When the energy that the RFID chip 3 obtains is enough When, the RFID chip 3 is activated, and completes corresponding action according to the inquiry of read write line instruction, by what is stored on chip FRID label information is reflected to read write line by the method for backscattered modulation.Read write line power be 32dBm, antenna gain be In the environment of 9dBic, the farthest identification distance of the single metal product is up to 12 meters.

In the above-described embodiments, only for RFID label tag, the insulating body 1 is not a necessary part. If mounting condition allows, the RFID chip 3 can be directly connected to the metal body of metal product directly or by wire On.

In the case where use environment is not harsh to requirements such as temperature, corrosion resistances, the insulating body 1 in above example It could alternatively be any isolation material, it might even be possible to use various types of pcb boards.

In the above-described embodiments, the electrical connection mechanism could alternatively be is fixedly connected with mode using screw-nut. It could alternatively be a pair of clip slots on the side of notch 7 being arranged on safety door 6.In each clip slot, a screw pass through into Hole of the type in the jig arm of the clip slot side and be screwed onto in the screw being molded in another jig arm.Added by adjusting the screw The primary antenna 2 tightly inserted in the clip slot.

Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or Among the protection domain that variation is created still in the utility model.

Claims

1. a kind of RFID label tag of expansible antenna, including RFID chip (3), the antenna leads of RFID chip (3) two are each It is electrically connected a primary antenna, it is characterised in that：Also include two primary antennas (2) gold with required installation respectively Belong to the electrical connection mechanism of the metal body connection of product.

2. the RFID label tag of expansible antenna according to claim 1, it is characterised in that：The electrical connection mechanism includes shaping Connecting hole (4) on the primary antenna (2) and the primary antenna (2) is connected to through the connecting hole (4) described The fixture (5) of conductive material on metal body.

3. the RFID label tag of expansible antenna according to claim 2, it is characterised in that：The fixture (5) be screw or Rivet.

4. the RFID label tag of expansible antenna according to Claims 2 or 3, it is characterised in that：The RFID chip (3) is fixed On an insulating body (1), two primary antennas (2), two primary antennas are further fixed in described matrix (1) (2) it is electrically insulated between.

5. the RFID label tag of expansible antenna according to claim 4, it is characterised in that：Described matrix (1) uses polytetrafluoro Vinyl material is made.

6. the RFID label tag of expansible antenna according to claim 4, it is characterised in that：The primary antenna (2) is fitting Metal foil in described matrix (1), the connecting hole (4) while penetrates the metal foil and described matrix (1).

7. the RFID label tag of expansible antenna according to claim 6, it is characterised in that：Described matrix (1) uses polytetrafluoro Vinyl material is made.

8. the RFID label tag of expansible antenna according to claim 6, it is characterised in that：The metal foil extends to the company Connect on the inwall of matrix (1) part of hole (4).

9. the RFID label tag of expansible antenna according to claim 8, it is characterised in that：Described matrix (1) uses polytetrafluoro Vinyl material is made.