CN212647513U

CN212647513U - RFID tire label

Info

Publication number: CN212647513U
Application number: CN202020838271.5U
Authority: CN
Inventors: 曹云波; 周琴; 周福泉
Original assignee: Shanghai Estar Technology Co ltd
Current assignee: Shanghai Estar Technology Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-03-02
Anticipated expiration: 2030-05-19

Abstract

The utility model relates to a RFID tire label, including PCB board antenna and adding the sense antenna, it is the steel cord to add the sense antenna, it includes the extension that is the wave extension of two symmetry formulas to add the sense antenna, and continuous and formation has the coupling region of certain shape between the extension of symmetry formula, for with PCB board antenna looks coupling. The PCB antenna is provided with two welding spots, and the induction adding antenna and the PCB antenna are welded into a whole through the welding spots. In the RFID tire label of the utility model, the coupling antenna is made of steel cords, thus avoiding the cavity possibly formed between the tire label and the tire rubber; the antenna design is carried out aiming at the inductive antenna, so that the impedance matching of the tag can be realized under the small size, the inductive antenna is coupled with the magnetic field signal of the PCB antenna, the chip signal is transmitted in a long distance, and the tag information can be effectively read in a long distance.

Description

RFID tire label

Technical Field

The utility model belongs to the technical field of electronic tags, concretely relates to RFID tire label.

Background

An electronic tag (RFID) has a unique identification code and is integrated into an information carrier (e.g., a rubber tire) after being embedded therein without affecting the performance of the carrier. Under the drive of external read-write equipment, data can be sent/read at any time, and the management of the carrier in the whole process of production, sale, use, claim settlement or informatization monitoring can be monitored in real time.

An electronic tag (RFID) is mainly used for realizing data sending/receiving through connection of an antenna and a radio frequency module, and is limited by the reading distance of the antenna and certain degree of deflection and deformation formed in the manufacturing or using process of an information carrier, so that the problems that the reading distance of the tag is short, the tag is easy to damage and cannot normally communicate with an external reading and writing device are often encountered in the actual using process. For example, a spring antenna embedded in a tire, which is common in the market, is easily deformed in the process of embedding the spring antenna in a rubber tire, so that the frequency deviation is too large; in the tire deformation process, the welded part of the spring antenna and the PCB substrate connected by adopting the welding technology is easy to break, so that the label is damaged, more seriously, the existing spring antenna cannot be well fused with tire rubber, and in the automobile driving process, a hole between the spring antenna and the rubber is easy to cause, so that potential safety hazards are brought.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems of short reading distance of the electronic tag, easy damage of the tag and potential safety hazard in the prior art, the utility model provides an RFID tire tag, which is characterized in that an inductive antenna is added on the basis of a PCB antenna, the inductive antenna is designed to achieve the purpose of impedance matching, and the coupling principle of a magnetic field is utilized to further amplify signals so that the tag can be read remotely; meanwhile, the steel cord is used as an antenna main body, in the tire vulcanization process, the antenna can be effectively integrated with the tire, the antenna and the chip are prevented from being broken, a cavity possibly formed between a tire label and tire rubber is avoided, and the signal stability is enhanced.

In order to achieve the purpose, the technical scheme of the application is as follows:

RFID tire label, RFID tire label include PCB board antenna and add the sense antenna, it is the steel cord to add the sense antenna, it includes the extension that is the wave extension of two symmetry formulas to add the sense antenna, and continuous and formation has the coupling region of certain shape between the extension of symmetry formula, be used for with PCB board antenna looks coupling.

The preferable technical scheme is as follows:

according to the RFID tire label, the PCB antenna is provided with two welding spots, and the induction adding antenna and the PCB antenna are connected into a whole through the welding spots.

The RFID tire label as described above, wherein the coupling area is circular and has a radius of 0-10 mm.

According to the RFID tire label, the PCB antenna comprises the PCB substrate printed with the coil and the RFID chip which is embedded on the PCB substrate and connected with the coil.

The RFID tire label has the frequency band of 860 MHz and 950 MHz.

Advantageous effects

The RFID tire label of the utility model has the advantages that the coupling antenna is made of steel cords, has high toughness and is not easy to deform and damage, and can avoid the separation of the antenna and the electronic device due to fracture, damage or aging when the label is used for the rubber tire; simultaneously combine to add sense antenna and PCB antenna to carry out the antenna design to adding the sense antenna, make the label can realize impedance match under small-size, and then add the magnetic field signal looks coupling of sense antenna and PCB antenna, with chip signal remote transmission, can effectually carry out remote reading label information, in time inquire, record tire information, make things convenient for the tire to trace back the inquiry, the staff of being convenient for in time knows the product condition, save time cost, cost of labor.

Drawings

Fig. 1 is a schematic structural diagram of an inductive antenna of an RFID tire tag according to the present invention;

fig. 2 is a schematic structural diagram of the PCB antenna of the RFID tire tag of the present invention;

FIG. 3 is a schematic diagram of the combination of the PCB antenna and the inductive antenna of the RFID tire tag of the present invention;

the antenna comprises a 1-PCB antenna, a 11-PCB substrate, a 12-coil, a 13-welding point, a 2-inductance adding antenna and a 21-coupling area.

Detailed Description

The present application is described in further detail below with reference to specific embodiments and with reference to the attached drawings.

The embodiment of the application provides an RFID tire label which is mainly applied to the inner side or the outer side of a framework of a car tire, a light truck tire, a heavy truck tire, an engineering machinery vehicle tire, an airplane tire and other rubber products in an inner sticking or outer sticking mode and can be read remotely through an ultrahigh frequency card reader. The RFID tire label comprises a PCB antenna 1 and an additive antenna 2, wherein the PCB antenna 1 can be an independent micro label, and the purpose is to reduce the volume of the label so as to reduce the influence of the label on a tire; the inductive antenna 2 is a steel cord, the steel cord is a thin steel wire strand or rope which is made of high-quality high-carbon steel, is plated with brass on the surface and has special purposes, the steel cord is used as an antenna main body, the antenna can be effectively integrated with a tire in the tire vulcanization process, a cavity which is possibly formed between a tire label and tire rubber is avoided while breakage between the antenna and a chip is avoided, compared with the tire label in the prior art, the inductive antenna 2 in the embodiment is used as a part of the RFID tire label, other encapsulation materials are not needed to be used for encapsulation, and the stability of signals can be enhanced.

Optionally, the structure of the PCB electronic tag may specifically adopt the following specific manner, as shown in fig. 2, the PCB board antenna 1 includes a PCB substrate 11 printed with a coil 12 and an RFID chip (not shown in the figure) embedded on the PCB substrate 11 and connected to the coil 12, and has an overall diameter of 7mm and an antenna portion diameter of 4-6 mm. More specifically, the tire further comprises a high temperature resistant coating shell for packaging the PCB substrate 11 and the RFID chip, the type of the RFID chip is selected according to specific use requirements, and the frequency band of the RFID tire tag in this embodiment is 860-950 MHz. The PCB antenna in the embodiment has a simple structure, and the coils are designed in a symmetrical annular mode, so that the volume is saved, and meanwhile, the impedance matching is favorably realized.

Further, as shown in fig. 2, the PCB board antenna 1 is further provided with two solder joints 13 for temporarily fixing the inductive antenna 2, so that the phenomenon that the PCB board antenna 1 is separated from the coupling antenna 2 when a tag is added and during tire vulcanization can be avoided, and the inductive antenna 2 and the PCB board antenna 1 are connected into a whole through the solder joints 13, so that remote reading can be conveniently performed through professional handheld equipment. The connection mode can be welding, adhesive bonding and the like.

An additive antenna in the prior art, such as a common spring antenna, is generally in a unidirectional extending helical structure; as shown in fig. 1, the additive antenna 2 in the present embodiment is different from the prior art in that it includes two symmetrical extending portions extending in a wave shape, the symmetrical extending portions are continuous to form a coupling region 21 with a certain shape, the coupling region is circular, and the radius is 0-10mm, as shown in fig. 3; the purpose of arranging the coupling region 21 is to facilitate the coupling of the inductive antenna 2 and the PCB antenna 1, further avoid the fracture between the antenna and the chip and enhance the signal stability; wherein, a certain shape refers to a circle, a rectangle, or other regular or irregular shapes, and the coupling region 21 in the present embodiment of the invention can also adopt any other shape setting that can realize its function.

The specific operation steps of the RFID tire label of the present embodiment during the processing and designing are as follows:

(1) designing a PCB antenna, and arranging two welding spots on a PCB substrate to ensure that the overall diameter of the PCB antenna is 7mm, and the diameter of an antenna part is 5 mm; wherein, the chip type is selected according to the specific use requirement;

(2) designing a sensing antenna, wherein the antenna is made of a steel cord, the antenna is symmetrically designed in a wave shape, and a circular coupling area with the radius of 6mm is reserved in the middle area;

(3) and welding the inductive antenna and the PCB into a whole.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

The RFID tire label comprises a PCB antenna and an induction antenna, and is characterized in that: the inductance adding antenna is a steel cord and comprises two symmetrical extending parts extending in a wave shape, and a coupling area with a certain shape is formed continuously between the symmetrical extending parts and is used for being coupled with the PCB antenna.
2. The RFID tire tag of claim 1, wherein the PCB board antenna is provided with two solder joints, and the inductive antenna and the PCB board antenna are connected as a whole by the solder joints.
3. The RFID tire tag of claim 1, wherein the coupling region is circular and has a radius of 0-10 mm.
4. The RFID tire tag of claim 1, wherein the PCB antenna comprises a PCB substrate printed with a coil and an RFID chip embedded on the PCB substrate and connected to the coil.
5. The RFID tire tag of claim 1, wherein the frequency band is 860 and 950 MHz.