An electronic tag sensitivity improvement device and method

Abstract

The present invention discloses an electronic tag sensitivity improvement device and method. The device includes a tag body and auxiliary radiators spaced on both sides of the tag body; by adding a certain number and size of auxiliary radiators, the present invention improves the sensitivity of the electronic tag itself, and at the same time has a better reading direction, reducing the probability of the electronic tag being read in the wrong direction.

Description

Technical Field

[0001] The present invention relates to a device and method for improving the sensitivity of an electronic tag, belonging to the technical field of electronic devices. Background Art

[0002] An electronic tag is also called a radio frequency tag, transponder, data carrier; a reader is also called a reading device, scanner, read head, communicator, reader / writer (depending on whether the electronic tag can rewrite data wirelessly). The radio frequency signal is spatially (contactlessly) coupled between the electronic tag and the reader through a coupling element; in the coupling channel, energy transfer and data exchange are realized according to the timing relationship.

[0003] Data transmission between the electronic tag and the reader is achieved through the electronic tag antenna. Most conventional electronic tag antennas are relatively large in size, making it impossible to make the electronic tag very small, thus affecting its usage range and application scenarios. Currently, there are also some small electronic tag antennas on the market. However, due to their small size, their sensitivity is poor and cannot meet people's needs. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a device and method for improving the sensitivity of an electronic tag, and solve the technical problem that the sensitivity of the existing electronic tag cannot meet people's increasing demands.

[0005] To achieve the above purpose, the present invention is implemented by the following technical solutions:

[0006] In the first aspect, the present invention provides a device for improving the sensitivity of an electronic tag, including a tag body and auxiliary radiators spaced on both sides of the tag body.

[0007] Optionally, the improving device further includes a housing, and the tag body and the auxiliary radiators are both arranged on the inner surface of the bottom of the housing; the housing is made of a non-metallic material.

[0008] Optionally, the auxiliary radiator is made of a metal conductor or a non-metal conductor. The metal conductors include aluminum, iron, copper, silver, and gold, and the non-metal conductors include carbon, graphite, and graphene.

[0009] Optionally, the resistivity of the auxiliary radiator is less than 0.1 .

[0010] Optionally, the number of the auxiliary radiators is 1 - 8.

[0011] Optionally, the number of the auxiliary radiators is three, which are respectively denoted as a first auxiliary radiator, a second auxiliary radiator, and a third auxiliary radiator. The second auxiliary radiator and the third auxiliary radiator are respectively arranged on both sides of the label body, and the first auxiliary radiator is arranged on the side of the second auxiliary radiator away from the label body.

[0012] Optionally, the length of the first auxiliary radiator satisfies: ;

[0013] The length of the second auxiliary radiator satisfies: ;

[0014] The length of the third auxiliary radiator satisfies: ;

[0015] The distance between the first auxiliary radiator and the second auxiliary radiator satisfies: ;

[0016] The distance between the second auxiliary radiator and the label body satisfies: ;

[0017] The distance between the third auxiliary radiator and the label body satisfies: ;

[0018] wherein, is the wavelength of the electromagnetic wave with a signal received by the label body.

[0019] In a second aspect, the present invention provides a method for improving the sensitivity of an electronic tag, which uses an electronic tag sensitivity improvement device as described above to improve the sensitivity of the electronic tag.

[0020] Compared with the prior art, the beneficial effects achieved by the present invention:

[0021] An electronic tag sensitivity improvement device and method provided by the present invention improve the sensitivity of the electronic tag itself by adding a certain number and size of auxiliary radiators, and at the same time have a better reading direction, reducing the probability of the electronic tag being read in the wrong direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of an electronic tag sensitivity improvement device provided by an embodiment of the present invention;

[0023] Figure 2 is a schematic size diagram of an electronic tag sensitivity improvement device provided by an embodiment of the present invention;

[0024] Figure 3 It is a schematic diagram of the use of a device for improving the sensitivity of an electronic tag provided by an embodiment of the present invention;

[0025] Figure 4 It is a schematic diagram for comparing the device of the present application with the existing device provided by an embodiment of the present invention Figure 1 ;

[0026] Figure 5 It is a schematic diagram for comparing the device of the present application with the existing device provided by an embodiment of the present invention Figure 2 ;

[0027] Figure 6 It is a schematic diagram for comparing the device of the present application with the existing device provided by an embodiment of the present invention Figure 3 ;

[0028] The markings in the figure are:

[0029] 1. Tag body, 2. Auxiliary radiator, 21. First auxiliary radiator, 22. Second auxiliary radiator, 23. Third auxiliary radiator, 3. Housing, 4. Electromagnetic signal. Specific embodiments

[0030] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0031] Embodiment 1:

[0032] As Figure 1 shown, an embodiment of the present invention provides a device for improving the sensitivity of an electronic tag, including a tag body 1 and auxiliary radiators 2 spaced on both sides of the tag body. For the installation of the tag body 1 and the auxiliary radiators 2, the improvement device further includes a housing 3, and the tag body 1 and the auxiliary radiators 2 are both arranged on the inner surface of the bottom of the housing 3; the housing 3 is made of a non-metallic material.

[0033] The auxiliary radiator 2 is made of a metal conductor or a non-metal conductor. The metal conductors include aluminum, iron, copper, silver and gold, and the non-metal conductors include carbon, graphite and graphene. The resistivity of the auxiliary radiator is less than 0.1 .

[0034] The number of the auxiliary radiators 2 is 1-8.

[0035] As Figure 2 shown, taking the number of the auxiliary radiators as 3 as an example, they are respectively denoted as the first auxiliary radiator 21, the second auxiliary radiator 22 and the third auxiliary radiator 23. The second auxiliary radiator 22 and the third auxiliary radiator 23 are respectively arranged on both sides of the tag body 1, and the first auxiliary radiator 21 is arranged on the side of the second auxiliary radiator 22 away from the tag body 1.

[0036] The length of the first auxiliary radiator 21 Satisfies: ;

[0037] The length of the second auxiliary radiator 22 Satisfies: ;

[0038] The length of the third auxiliary radiator 23 Satisfies: ;

[0039] The distance between the first auxiliary radiator 21 and the second auxiliary radiator 22 Satisfies: ;

[0040] The distance between the second auxiliary radiator 22 and the tag body 1 Satisfies: ;

[0041] The distance between the third auxiliary radiator 23 and the tag body 1 Satisfies: ;

[0042] Wherein, is the wavelength of the electromagnetic wave with a signal received by the tag body 1.

[0043] As Figure 3 shown, during operation:

[0044] The third auxiliary radiator 23 is designed with capacitive characteristics. The electromagnetic signal 4 first reaches the third auxiliary radiator 23, generating an induced electromotive force and an induced current .

[0045] The tag body 1 is designed with impedance matching characteristics. The electromagnetic signal 4 then passes through and reaches the tag body 1, generating an induced electromotive force and an induced current .

[0046] Because there is a difference in distance of (assuming here) in space, so is 90° out of phase behind . Because the third auxiliary radiator 23 exhibits capacitive characteristics, so is 90° behind . Therefore is 180° behind . The magnetic field generated by the induced current of the third auxiliary radiator 23 reaching the tag body 1 is again behind Lagging by 90°, The induced electromotive force generated on the tag body 1 is lagging by 90° compared to and is 0°, that is, the third auxiliary radiator 23 generates an electromotive force in the same direction on the tag body 1, and the energy on the tag body 1 is enhanced.

[0047] The second auxiliary radiator 22 is designed with inductive characteristics. After the electromagnetic signal 4 reaches the tag body 1, and then passes through the wavelength to reach the second auxiliary radiator 22, an induced electromotive force and an induced current are generated.

[0048] Because there is a difference in space of (assuming here ), the distance, so is lagging in phase by 90° compared to is lagging by 90° compared to is lagging by 180°. The induced current generated by the second auxiliary radiator 22 reaches the magnetic field formed on the tag body 1 which is also lagging by 90° compared to the induced electromotive force generated on the tag body 1 is lagging by 90° compared to is lagging by 180° compared to is lagging by 360°, that is, the second auxiliary radiator 22 generates an electromotive force in the same phase on the tag body 1, and the energy on the tag body 1 is enhanced.

[0049] Similarly, by the position and characteristics of the third auxiliary radiator 23, the energy at the tag body 1 can also be enhanced.

[0050] By selecting the MR6 chip as the tag body of this embodiment, through experiments, it can be obtained that its sensitivity is improved from -22 dBm to -27 dBm, as Figure 4 shown. As Figures 5-6 shown, the present invention also has a better reading direction. The probability of the tag being read in the wrong direction can be reduced.

[0051] The 0-degree direction (Z+) is the correct direction, and the performance is enhanced in the vicinity of this direction (0 degrees ± 45 degrees).

[0052] The 180-degree direction (Z-) is the wrong direction, and the performance is inhibited in the vicinity of this direction (180 degrees ± 135 degrees).

[0053] Embodiment 2:

[0054] The embodiment of the present invention provides a method for improving the sensitivity of an electronic tag, and uses an electronic tag sensitivity improvement device as in Embodiment 1 to improve the sensitivity of the electronic tag.

[0055] Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0056] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. An electronic tag sensitivity improvement device, characterized in that It includes a tag body and auxiliary radiators spaced on both sides of the tag body; the number of the auxiliary radiators is 3, which are respectively denoted as the first auxiliary radiator, the second auxiliary radiator and the third auxiliary radiator. The second auxiliary radiator and the third auxiliary radiator are respectively arranged on both sides of the tag body, and the first auxiliary radiator is arranged on the side of the second auxiliary radiator away from the tag body; the third auxiliary radiator is designed with capacitive characteristics, the tag body is designed with impedance matching characteristics, and the second auxiliary radiator and the first auxiliary radiator are designed with inductive characteristics; The length of the first auxiliary radiator satisfies: ; The length of the second auxiliary radiator Satisfies: ; The length of the third auxiliary radiator satisfies: ; The distance between the first auxiliary radiator and the second auxiliary radiator satisfies: ; The distance between the second auxiliary radiator and the tag body satisfies: ; The distance between the third auxiliary radiator and the tag body satisfies: ; Among them, is the electromagnetic wave wavelength with signals received by the tag body.

2. The electronic tag sensitivity improvement device according to claim 1, characterized in that, The lifting device further includes a housing, and the tag body and the auxiliary radiators are both arranged on the inner surface of the bottom of the housing; the housing is made of a non-metallic material.

3. An electronic tag sensitivity improvement device according to claim 1, characterized in that, The auxiliary radiator is made of a metal conductor or a non-metal conductor. The types of the metal conductor include aluminum, iron, copper, silver and gold, and the types of the non-metal conductor include carbon, graphite and graphene.

4. An electronic tag sensitivity improvement device according to claim 1, wherein The resistivity of the auxiliary radiator is less than 0.1 .

5. A method for improving the sensitivity of an electronic tag, characterized in that Use an electronic tag sensitivity improvement device according to any one of claims 1-4 to improve the sensitivity of the electronic tag.

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