Antenna system for identifying double tags and electronic device

Abstract

The invention relates to the technical field of near field communication, and discloses an antenna system for identifying double tags and electronic equipment, the antenna system for identifying double tags comprises an NFC control chip, a first identification access, a second identification access, a first tag and a second tag, the NFC control chip communicates with the first tag through the first identification access, and the second tag communicates with the first tag through the second identification access. And the NFC control chip communicates with the second tag through the second identification access. The electronic equipment comprises the antenna system for identifying the double tags. According to the invention, the specific position of the first label can be identified and positioned through the first identification channel, and the specific position of the second label can be identified and positioned through the second identification channel, so that the positioning and identification performance of the double labels is realized, the identification accuracy can be ensured, and the user experience is improved.

Description

Technical Field

[0001] This disclosure relates to the field of near-field communication technology, and more particularly to an antenna system and electronic device for identifying dual tags. Background Technology

[0002] Near Field Communication (NFC) technology is increasingly being used in automotive fragrance systems, significantly improving user experience and system intelligence through its short-range, passive interaction and high security features. Core applications include intelligent identification of fragrance capsules and personalized configuration management. Specifically, fragrance capsules contain embedded NFC tags that store information such as fragrance type and remaining quantity. When inserted, the vehicle's card reader automatically identifies and synchronizes parameters, eliminating the need for manual settings. Users can quickly access their preferences (such as fragrance concentration or linked air conditioning / ambient lighting modes) by tapping their phone or NFC card on the in-vehicle sensor area, achieving seamless switching. Furthermore, NFC supports device maintenance and commercial service extensions. For example, repair personnel can use an NFC reader to read fault codes, and users can tap the fragrance packaging label to be redirected to an e-commerce page to restock, forming a closed loop of "hardware + service." The introduction of NFC technology upgrades automotive fragrance systems from functional modules to intelligent interactive entry points, becoming a key carrier for enhancing cabin personalization and ecosystem services. In these applications, the structural design of the NFC antenna will be crucial to the user experience.

[0003] However, in the process of using NFC technology to identify fragrance tags in existing car fragrance systems, the accuracy of location identification is often not high, which affects the user experience and satisfaction. Summary of the Invention

[0004] To address the aforementioned technical issues, this disclosure provides an antenna system and electronic device for identifying dual tags, thereby resolving the problem of low positioning accuracy and negative impact on user experience satisfaction when using NFC antennas to identify dual tags in the prior art.

[0005] This disclosure provides an antenna system for identifying dual tags, including an NFC control chip, a first identification path, a second identification path, a first tag, and a second tag; wherein the NFC control chip communicates with the first tag through the first identification path, and the NFC control chip communicates with the second tag through the second identification path.

[0006] Optionally, the NFC control chip includes a first control terminal and a second control terminal;

[0007] A first switching device is provided between the first control terminal and the first identification path. The first terminal of the first switching device is electrically connected to the first identification path, and the second terminal of the first switching device is grounded.

[0008] A second switching device is provided between the second control terminal and the second identification path. The first terminal of the second switching device is electrically connected to the second identification path, and the second terminal of the second switching device is grounded.

[0009] When the first identification path is working, the second control terminal controls the first and second terminals of the second switching device to be turned on.

[0010] When the second identification path is working, the first control terminal controls the first and second terminals of the first switching device to be turned on.

[0011] Optionally, when the first identification path is working, the first control terminal controls the first and second terminals of the first switching device to be turned off.

[0012] When the second identification path is working, the second control terminal controls the first and second terminals of the second switching device to be cut off.

[0013] Optionally, the NFC control chip may also include a first transmitter, a second transmitter, a first receiver, a second receiver, and a third receiver;

[0014] The first transmitting end, the second transmitting end, the first receiving end, and the second receiving end are electrically connected to a first identification path. The first identification path includes at least a dual-ended differential antenna, which includes a first coil that covers the first tag.

[0015] The first transmitting end, the second transmitting end and the third receiving end are electrically connected to a second identification path. The second identification path includes at least a single-ended antenna, and the single-ended antenna includes a second coil. The second coil covers the second tag.

[0016] The first terminal of the first switching device is electrically connected to the dual-ended differential antenna, and the first terminal of the second switching device is electrically connected to the single-ended antenna.

[0017] Further optionally, the first switching device includes a first MOSFET, the gate of the first MOSFET is electrically connected to a first control terminal, the first terminal of the first MOSFET is electrically connected to a dual-ended differential antenna, and the second terminal of the first MOSFET is grounded.

[0018] The second switching device includes a second MOSFET, the gate of which is electrically connected to a second control terminal, the first terminal of which is electrically connected to a single-ended antenna, and the second terminal of which is grounded.

[0019] Alternatively, both the first MOSFET and the second MOSFET may be P-type MOSFETs, or both the first MOSFET and the second MOSFET may be N-type MOSFETs.

[0020] The output levels of the first control terminal and the second control terminal are out of phase.

[0021] Alternatively, one of the first MOSFET and the second MOSFET may be a P-type MOSFET and the other may be an N-type MOSFET.

[0022] The first control terminal and the second control terminal are shorted together.

[0023] Further optionally, the first identification path also includes a low-pass filter module, a first matching circuit, and a first peripheral receiving circuit; the first transmitting end and the second transmitting end are respectively connected to the two input ends of the low-pass filter module, the first matching circuit is connected between the output end of the low-pass filter module and the dual-ended differential antenna, and the first receiving end and the second receiving end are respectively connected to the dual-ended differential antenna through the first peripheral receiving circuit;

[0024] The second identification path also includes a low-pass filter module, a second matching circuit, and a second peripheral receiving circuit; the second matching circuit is connected between the output of the low-pass filter module and the single-ended antenna, and the third receiving end is connected to the single-ended antenna through the second peripheral receiving circuit.

[0025] Further optionally, the first coil and the second coil include a gap, with a width of D1 along the direction from the first coil to the second coil, and the outer width of the first coil is D2; wherein, D1 = 1.5D2.

[0026] Further optionally, the NFC control chip includes an ADC conversion module, which is electrically connected to the first receiver, the second receiver, and the third receiver, respectively.

[0027] The ADC conversion module is configured to convert the quantization value based on the identification signal of the dual-ended differential antenna received by the first receiver and the second receiver to obtain a first quantization value. When the first quantization value is lower than a first preset threshold, it is determined that there is no first tag at the dual-ended differential antenna.

[0028] The ADC conversion module is also configured to perform quantization conversion based on the identification signal of the single-ended antenna received by the third receiver to obtain a second quantized value. When the second quantized value is lower than a second preset threshold, it is determined that there is no second tag at the single-ended antenna.

[0029] Based on the same inventive concept, this disclosure also provides an electronic device, including a fragrance bottle carrier and the above-mentioned antenna system for identifying dual tags;

[0030] The fragrance bottle carrier includes two fragrance bottle interfaces, with a first label and a second label respectively disposed within the two fragrance bottle interfaces.

[0031] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0032] 1. The antenna system for identifying dual tags disclosed herein, wherein the NFC control chip communicates with the first tag through a first identification channel and with the second tag through a second identification channel, the specific location of the first tag can be identified and located through the first identification channel and the specific location of the second tag can be identified and located through the second identification channel, thereby achieving the positioning and identification performance of dual tags.

[0033] 2. The antenna system for identifying dual tags disclosed herein further includes a first switching device between the first control terminal of the NFC control chip and the first identification path, and a second switching device between the second control terminal of the NFC control chip and the second identification path. The NFC control chip controls the control signals output by the first and second control terminals so that when the first identification path is working, i.e., when the NFC control chip controls the first identification path to communicate with the first tag, the NFC control chip outputs an enable control signal through the second control terminal to control the second switching device to be in a conducting state. This makes the first and second terminals of the second switching device conduct. Even if the antenna radiation field of the second identification path inevitably overlaps with that of the first identification path, when the energy of the antenna radiation field of the second identification path is coupled to the first identification path, it will preferentially flow into the ground terminal and be preferentially consumed by the ground terminal. This can make the coupling between antennas more thorough, thereby effectively reducing the coupling and interference of the antenna radiation field of the second identification path to the first identification path when it is working. Similarly, when the second identification path is working, i.e., when the NFC control chip controls the second identification path to communicate with the second tag, the NFC control chip outputs an enable control signal through the first control terminal to control the first switching device to be in a conducting state. This makes the first and second terminals of the first switching device conduct. Even if the radiation field of the antenna of the first identification path inevitably overlaps with that of the second identification path, the energy of the radiation field of the antenna of the first identification path coupled to the second identification path will preferentially flow into the ground terminal and be preferentially consumed by the ground terminal. This can make the coupling between antennas more thorough, thereby effectively reducing the coupling and interference of the antenna radiation field of the first identification path when the second identification path is working. This disclosure can effectively reduce the coupling effect of the antenna during use, which is conducive to enhancing the communication stability of the entire system, ensuring identification accuracy, and improving the user experience. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0035] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of an antenna system for identifying dual tags provided in an embodiment of this disclosure;

[0037] Figure 2 yes Figure 1 A schematic diagram illustrating the working principle of the first identification pathway in the middle;

[0038] Figure 3 yes Figure 1 A schematic diagram illustrating the working principle of the second identification pathway.

[0039] Figure 4 yes Figure 1 A schematic diagram of a circuit connection structure for an antenna system used to identify dual tags;

[0040] Figure 5 yes Figure 1 A schematic diagram of another circuit connection structure for an antenna system used to identify dual tags;

[0041] Figure 6 yes Figure 1 A schematic diagram of another circuit connection structure for an antenna system used to identify dual tags;

[0042] Figure 7 yes Figure 1 A schematic diagram of another circuit connection structure for an antenna system used to identify dual tags;

[0043] Figure 8 This is another schematic diagram of an antenna system for identifying dual tags provided in an embodiment of this disclosure;

[0044] Figure 9 yes Figure 1 A schematic diagram of another circuit connection structure for an antenna system used to identify dual tags;

[0045] Figure 10 This is a schematic diagram of the connection structure between a fragrance bottle carrier and an antenna system for identifying dual tags in an electronic device, as provided in an embodiment of this disclosure. Detailed Implementation

[0046] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0047] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0048] Please refer to Figure 1 , Figure 1 This is a schematic diagram of an antenna system for identifying dual tags provided in this embodiment. The antenna system 000 for identifying dual tags provided in this embodiment includes an NFC control chip 10, a first identification path 20A, a second identification path 20B, a first tag 30A, and a second tag 30B. The NFC control chip 10 communicates with the first tag 30A through the first identification path 20A and with the second tag 30B through the second identification path 20B.

[0049] Specifically, the antenna system 000 for identifying dual tags provided in this embodiment includes an NFC control chip 10, a first identification path 20A, a second identification path 20B, a first tag 30A, and a second tag 30B. The NFC control chip 10 can be an NFC chip (Near Field Communication Controller, NFCC). The NFC control chip 10 is used to provide an output signal and receive the identification signal for demodulation and reading when communicating between the first identification path 20A and the first tag 30A. The NFC control chip 10 is also used to provide an output signal and receive the identification signal for demodulation and reading when communicating between the second identification path 20B and the second tag 30B.

[0050] In this embodiment, the NFC control chip 10 communicates with the first tag 30A through the first identification path 20A and with the second tag 30B through the second identification path 20B. The first identification path 20A can be used to identify and locate the specific location of the first tag 30A, and the second identification path 20B can be used to identify and locate the specific location of the second tag 30B, thereby achieving the positioning and identification performance of dual tags.

[0051] In some alternative embodiments, please continue to refer to Figure 1 In this embodiment, the NFC control chip 10 includes a first control terminal 10-1 and a second control terminal 10-2.

[0052] A first switching device 401 is provided between the first control terminal 10-1 and the first identification path 20A. The first terminal of the first switching device 401 is electrically connected to the first identification path 20A, and the second terminal of the first switching device 401 is grounded to GND.

[0053] A second switching device 402 is provided between the second control terminal 10-2 and the second identification path 20B. The first terminal of the second switching device 402 is electrically connected to the second identification path 20B, and the second terminal of the second switching device 402 is grounded to GND.

[0054] When the first identification path 20A is working, the second control terminal 10-2 controls the first and second terminals of the second switching device 402 to be turned on.

[0055] When the second identification path 20B is working, the first control terminal 10-1 controls the first and second terminals of the first switching device 401 to be turned on.

[0056] In existing technologies, when identifying and locating tags at two different locations, the radiation fields of the antennas communicating with different tags overlap. For example, when the NFC control chip 10 communicates with the first tag 30A through the first identification path 20A, the antenna radiation field of the second identification path 20B inevitably overlaps with that of the first identification path 20A. The antenna radiation field of the second identification path 20B is easily coupled into the antenna radiation field of the first identification path 20A, affecting the radiation energy in the first identification path 20A. This, in turn, affects the communication effect and accuracy between the first identification path 20A and the first tag 30A, making it easy to cause a certain degree of misselection when identifying and selecting the first tag 30A. Similarly, when the NFC control chip 10 communicates with the second tag 30B through the second identification path 20B, the antenna radiation fields of the first identification path 20A and the second identification path 20B inevitably overlap. The antenna radiation field of the first identification path 20A is easily coupled into the antenna radiation field of the second identification path 20B, affecting the radiation energy in the second identification path 20B. This, in turn, affects the communication effect and accuracy between the second identification path 20B and the second tag 30B, making it easy to cause a certain degree of misselection when identifying the second tag 30B. Ultimately, this results in low recognition accuracy of the dual tags, poor recognition signal quality, and a negative impact on user experience.

[0057] To address the aforementioned issues, this embodiment provides an NFC control chip 10 comprising a first control terminal 10-1 and a second control terminal 10-2. A first switching device 401 is positioned between the first control terminal 10-1 and the first identification path 20A. The first terminal of the first switching device 401 is electrically connected to the first identification path 20A, and the second terminal of the first switching device 401 is grounded (GND). The NFC control chip 10 controls the on / off state of the first switching device 401 via a control signal output from the first control terminal 10-1. For example, the NFC control chip 10 controls the on / off state of the first switching device 401 via a control signal output from the first control terminal 10-1. If the output control signal is an enable signal, the first switching device 401 is in the on state, and a conductive path is formed between the first identification path 20A electrically connected to the first terminal of the first switching device 401 and the ground terminal GND of the second terminal of the first switching device 401. Similarly, if the control signal output by the NFC control chip 10 through the first control terminal 10-1 is a non-enable signal, the first switching device 401 is in the off state, and the first identification path 20A electrically connected to the first terminal of the first switching device 401 and the ground terminal GND of the second terminal of the first switching device 401 are disconnected.

[0058] A second switching device 402 is provided between the second control terminal 10-2 and the second identification path 20B. The first terminal of the second switching device 402 is electrically connected to the second identification path 20B, and the second terminal of the second switching device 402 is grounded at GND. The NFC control chip 10 controls the conduction and cutoff of the second switching device 402 through the control signal output by the second control terminal 10-2. If the control signal output by the NFC control chip 10 through the second control terminal 10-2 is an enable signal, the second switching device 402 is in the conduction state, and a conduction path is formed between the first terminal of the second switching device 402 electrically connected to the second identification path 20B and the grounded terminal GND of the second terminal of the second switching device 402. Similarly, if the control signal output by the NFC control chip 10 through the second control terminal 10-2 is a non-enable signal, the second switching device 402 is in the cutoff state, and the circuit between the first terminal of the second switching device 402 electrically connected to the second identification path 20B and the grounded terminal GND of the second terminal of the second switching device 402 is broken.

[0059] The antenna system 000 for identifying dual tags in this embodiment uses a first switching device 401 between the first control terminal 10-1 of the NFC control chip 10 and the first identification path 20A, and a second switching device 402 between the second control terminal 10-2 of the NFC control chip 10 and the second identification path 20B. The NFC control chip 10 controls the control signals output by the first control terminal 10-1 and the second control terminal 10-2, so that when the first identification path 20A is working, the second control terminal 10-2 controls the first and second terminals of the second switching device 402 to be turned on, that is, the NFC control chip 10 controls the first identification path 20A to be turned on. When A communicates with the first tag 30A, the NFC control chip 10 outputs an enable control signal through the second control terminal 10-2 to control the second switching device 402 to be in a conducting state. This makes the first and second terminals of the second switching device 402 conduct. Even if the radiation field of the second identification path 20B antenna inevitably overlaps with the first identification path 20A, when the energy of the second identification path 20B antenna radiation field is coupled to the first identification path 20A, it will preferentially flow into the ground terminal GND and be preferentially consumed by the ground terminal GND. This can effectively reduce the coupling and interference of the second identification path 20B antenna radiation field to the first identification path 20A when it is working. Similarly, when the second identification path 20B is working, the first control terminal 10-1 controls the first and second terminals of the first switching device 401 to be turned on. That is, when the NFC control chip 10 controls the second identification path 20B to communicate with the second tag 30B, the NFC control chip 10 outputs an enable control signal through the first control terminal 10-1 to control the first switching device 401 to be in the on state, so that the first and second terminals of the first switching device 401 are turned on. Even if the antenna radiation field of the first identification path 20A inevitably overlaps with the second identification path 20B, when the energy of the antenna radiation field of the first identification path 20A is coupled to the second identification path 20B, it will preferentially flow into the ground terminal GND and be preferentially consumed by the ground terminal GND. This can effectively reduce the coupling and interference of the antenna radiation field of the first identification path 20A to the second identification path 20B when the second identification path 20B is working.

[0060] In this embodiment, by setting the first switching device 401 and the second switching device 402, when the first identification path 20A is not in use, the first switching device 401, which is electrically connected to it, is turned on, so that the ground terminal GND of the first identification path 20A is made, reducing interference and coupling to antennas in other areas; when the second identification path 20B is not in use, the second switching device 402, which is electrically connected to it, is turned on, so that the ground terminal GND of the second identification path 20B is made, reducing interference and coupling to antennas in other areas. This can effectively reduce the coupling effect of the antenna during use, which is conducive to enhancing the communication stability of the entire system, ensuring identification accuracy, and improving the user experience.

[0061] In this embodiment, by turning on the second identification path 20B through the second switching device 402 while controlling the first identification path 20A to operate, the antenna radiation field energy is preferentially discharged into the ground terminal GND. This allows for a more thorough elimination of coupling between antennas, better reducing interference and coupling of the second identification path 20B to antennas in other areas. By turning on the first identification path 20A through the first switching device 401 while controlling the second identification path 20B to operate, the antenna radiation field energy is preferentially discharged into the ground terminal GND. This further enhances the communication stability of the entire system and improves identification accuracy.

[0062] Optionally, in this embodiment, the first control terminal 10-1 and the second control terminal 10-2 can be GPIO (General-Purpose Input / Output) interfaces. Digital signal output can be realized through the internal configuration of the NFC control chip 10 to provide control signals for controlling the first switching device 401 to be turned on or off, and control signals for controlling the second switching device 402 to be turned on or off.

[0063] Optionally, this embodiment does not limit the type and specific structure of the first switching device 401 and the second switching device 402. In specific implementation, the first switching device 401 and the second switching device 402 can both be transistors, or both can both be relays, or both can both be select switches. It is only required that under the control signal provided by the first control terminal 10-1, the conduction between the first terminal and the second terminal of the first switching device 401 can be controlled, and under the control signal provided by the second control terminal 10-2, the conduction between the first terminal and the second terminal of the second switching device 402 can be controlled.

[0064] It is understood that the specific design structure of the first identification path 20A and the second identification path 20B will not be described in detail in this embodiment. For details, please refer to the structure of the antenna identification circuit in the related technology, or refer to the description of the following embodiments for understanding.

[0065] In some alternative embodiments, please refer to the references. Figure 1 , Figure 2 and Figure 3 , Figure 2 yes Figure 1 A schematic diagram illustrating the working principle of the first identification pathway. Figure 3 yes Figure 1The schematic diagram of the second identification path in operation is shown in this embodiment. When the first identification path 20A is working, the first control terminal 10-1 controls the first and second terminals of the first switching device 401 to be cut off. When the second identification path 20B is working, the second control terminal 10-2 controls the first and second terminals of the second switching device 402 to be cut off.

[0066] This embodiment explains that the control signals provided by the first control terminal 10-1 and the second control terminal 10-2 of the NFC control chip 10 enable the second control terminal 10-2 to control the first and second terminals of the second switching device 402 to conduct when the first identification path 20A is working. When controlling the first identification path 20A to work, the second identification path 20B is also turned on through the second switching device 402, allowing the antenna radiation energy of the second identification path 20B to preferentially dissipate into the ground terminal GND. This allows for a more thorough elimination of coupling between antennas, better reducing interference and coupling of the second identification path 20B to antennas in other areas. Meanwhile, the first control terminal 10-1 controls the first and second terminals of the first switching device 401 to be turned off (e.g., ...). Figure 2 As shown, Figure 2 The use of a cross symbol to indicate that the first and second terminals of the first switching device 401 are off can reduce the driving power consumption of the NFC control chip 10 and ensure normal communication between the first identification path 20A and the first tag 30A. When the second identification path 20B is working, the first control terminal 10-1 controls the first and second terminals of the first switching device 401 to be turned on. When controlling the second identification path 20B to work, the first identification path 20A is turned on through the first switching device 401, so that the antenna radiation field energy of the first identification path 20A is preferentially discharged to the ground terminal GND. This can eliminate the coupling between antennas more thoroughly and better reduce the interference and coupling of the first identification path 20A to other antenna areas. At this time, the second control terminal 10-2 controls the first and second terminals of the second switching device 402 to be turned off (e.g., ...). Figure 3 As shown, Figure 3 The use of a cross symbol to indicate that the first and second ends of the second switching device 402 are cut off can reduce the driving power consumption of the NFC control chip 10 and ensure normal communication between the second identification path 20B and the second tag 30B.

[0067] In some alternative embodiments, please refer to the references. Figure 1 and Figure 4 , Figure 4 yes Figure 1 A schematic diagram of a circuit connection structure for an antenna system used to identify dual tags (it can be understood that this is to clearly illustrate the physical coverage relationship between the first tag and the first coil, and the physical coverage relationship between the second tag and the second coil). Figure 1(Transparency filling is performed in the middle). In this embodiment, the NFC control chip 10 also includes a first transmitting end TX1, a second transmitting end TX2, a first receiving end RXN, a second receiving end RXP, and a third receiving end RX.

[0068] The first transmitting end TX1 and the second transmitting end TX2 are electrically connected to the first receiving end RXN and the second receiving end RXP via a first identification path 20A. The first identification path 20A includes at least a dual-ended differential antenna 20A1, which includes a first coil that covers the first tag 30A.

[0069] The first transmitting end TX1, the second transmitting end TX2 and the third receiving end RX are electrically connected to the second identification path 20B. The second identification path 20B includes at least a single-ended antenna 20B1. The single-ended antenna 20B1 includes a second coil, and the second coil covers the second tag 30B.

[0070] The first terminal of the first switching device 401 is electrically connected to the dual-ended differential antenna 20A1, and the first terminal of the second switching device 402 is electrically connected to the single-ended antenna 20B1.

[0071] This embodiment explains that the NFC control chip 10 includes a first transmitter TX1, a second transmitter TX2, a first receiver RXN, and a second receiver RXP. The first transmitter TX1 and the second transmitter TX2 are electrically connected to the first receiver RXN and the second receiver RXP via a first identification path 20A. The first transmitter TX1 and the second transmitter TX2 communicate with the first tag 30A through the first identification path 20A, and feed back the identification results to the NFC control chip 10 for demodulation and reading through the first receiver RXN and the second receiver RXP, thereby realizing the identification and positioning function of the first identification path 20A for the first tag 30A. The NFC control chip 10 also includes a third receiver RX. The first transmitter TX1, the second transmitter TX2, and the third receiver RX are electrically connected to a second identification path 20B. The first transmitter TX1 and the second transmitter TX2 communicate with the second tag 30B through the second identification path 20B, and feed back the identification results to the NFC control chip 10 for demodulation and reading through the third receiver RX, thereby realizing the identification and positioning function of the second identification path 20B for the second tag 30B.

[0072] In this embodiment, the first identification path 20A includes at least a dual-ended differential antenna 20A1. The dual-ended differential antenna 20A1 includes a first coil that covers a first tag 30A. The first coil can be a serpentine metal winding structure. The first tag 30A refers to an RFID (Radio Frequency Identification) tag, which can be understood as an electronic tag installed or attached to an asset or item. This tag can store and transmit data through radio signals to achieve automatic identification and tracking of assets or items. In terms of physical location, the first coil of the dual-ended differential antenna 20A1 covers the first tag 30A, so that when the first identification path 20A is working, the dual-ended differential antenna 20A1 can communicate with the first tag 30A. The second identification path 20B includes at least a single-ended antenna 20B1. The single-ended antenna 20B1 includes a second coil that covers a second tag 30B. The second coil can be a serpentine metal winding structure. The second tag 30B refers to an RFID (Radio Frequency Identification) tag, which can be understood as an electronic tag installed or attached to an asset or item. This tag can store and transmit data via radio signals to achieve automatic identification and tracking of assets or items. In terms of physical location, the second coil of the single-ended antenna 20B1 covers the second tag 30B, so that when the second identification path 20B is working, the single-ended antenna 20B1 can communicate with the second tag 30B. That is, in this embodiment, the antenna included in the first identification path 20A is a dual-ended differential antenna 20A1, and the antenna included in the second identification path 20B is a single-ended antenna 20B1. Compared with the single-ended antenna 20B1, the dual-ended differential antenna 20A1 has less energy loss and a stronger transmitted field, which is more conducive to improving the tag identification effect of the entire system. Furthermore, in this embodiment, the first identification path 20A and the second identification path 20B use different receiving ends. The first identification path 20A uses the first receiving end RXN and the second receiving end RXP, while the second identification path 20B uses the third receiving end RX. This can also avoid interference from the other antenna when one antenna is working, which is beneficial to ensuring identification accuracy.

[0073] In some alternative embodiments, please refer to the references. Figure 1 , Figure 4 and Figure 5 , Figure 5 yes Figure 1A schematic diagram of another circuit connection structure for an antenna system used to identify dual tags is shown in this embodiment. The first identification path 20A further includes a low-pass filter module 200, a first matching circuit 20A2, and a first peripheral receiving circuit 20A3. The first transmitting end TX1 and the second transmitting end TX2 are respectively connected to the two input ends of the low-pass filter module 200. The first matching circuit 20A2 is connected between the output end of the low-pass filter module 200 and the dual-ended differential antenna 20A1. The first receiving end RXN and the second receiving end RXP are respectively connected to the dual-ended differential antenna 20A1 through the first peripheral receiving circuit 20A3.

[0074] The second identification path 20B also includes a low-pass filter module 200, a second matching circuit 20B2, and a second peripheral receiving circuit 20B3; the second matching circuit 20B2 is connected between the output of the low-pass filter module 200 and the single-ended antenna 20B1, and the third receiving end RX is connected to the single-ended antenna 20B1 through the second peripheral receiving circuit 20B3.

[0075] This embodiment illustrates an example implementation of the specific electrical connection structure of the first identification path 20A and the second identification path 20B. Specifically, the first identification path 20A includes a low-pass filter module 200, a first matching circuit 20A2, a first peripheral receiving circuit 20A3, and a dual-ended differential antenna 20A1. The first transmitting end TX1 and the second transmitting end TX2 of the NFC control chip 10 are respectively connected to the two input ends of the low-pass filter module 200. The low-pass filter module 200 is used to filter out high-frequency noise outside 13.56MHz, so that the signals transmitted and output by the first transmitting end TX1 and the second transmitting end TX2 are filtered to output a sine wave waveform with a frequency of 13.56MHz. Through the low-pass filter module 200, the system can operate at a frequency of 13.56MHz, and wireless identification and communication can be achieved through inductive coupling and data transmission. The first matching circuit 20A2 is connected between the output of the low-pass filter module 200 and the dual-ended differential antenna 20A1. The first matching circuit 20A2 is used to adjust the load impedance of the transmitted signals of the first transmitting end TX1 and the second transmitting end TX2 and adjust the resonant frequency to a specified 13.56MHz, so as to achieve impedance matching with the first transmitting end TX1 and the second transmitting end TX2 of the NFC control chip 10 and achieve the optimal transmission efficiency of the dual-ended differential antenna 20A1. The NFC control chip 10 also includes a first receiving end RXN and a second receiving end RXP. The first receiving end RXN and the second receiving end RXP are respectively connected to the dual-ended differential antenna 20A1 through the first peripheral receiving circuit 20A3. The first receiving end RXN, the second receiving end RXP, the first peripheral receiving circuit 20A3, and the dual-ended differential antenna 20A1 form the first receiving circuit, and the first peripheral receiving circuit 20A3 realizes DC blocking and pre-attenuation of the signal.

[0076] The second identification path 20B includes a low-pass filter module 200, a second matching circuit 20B2, a second peripheral receiving circuit 20B3, and a single-ended antenna 20B1. The second matching circuit 20B2 is connected between the output terminal of the low-pass filter module 200 and the single-ended antenna 20B1. That is, the first identification path 20A and the second identification path 20B can share a low-pass filter module 200. The first transmitting terminal TX1 and the second transmitting terminal TX2 of the NFC control chip 10 are respectively connected to the two input terminals of the low-pass filter module 200. The low-pass filter module 200 is used to filter out high-frequency noise outside 13.56MHz, so that the signals transmitted and output by the first transmitting terminal TX1 and the second transmitting terminal TX2 are filtered to output a sine wave waveform with a frequency of 13.56MHz. Through the low-pass filter module 200, the operating frequency of the system can be realized at 13.56MHz, and wireless identification and communication can be realized through inductive coupling and data transmission. The second matching circuit 20B2 is connected between the output of the low-pass filter module 200 and the single-ended antenna 20B1. The second matching circuit 20B2 is used to adjust the load impedance of the transmitted signals from the first transmitting end TX1 and the second transmitting end TX2 and to adjust the resonant frequency to a specified 13.56MHz, achieving impedance matching with the first transmitting end TX1 and the second transmitting end TX2 of the NFC control chip 10, thus achieving optimal transmission efficiency of the single-ended antenna 20B1. The NFC control chip 10 also includes a third receiving end RX, which is connected to the single-ended antenna 20B1 through a second peripheral receiving circuit 20B3. The third receiving end RX, the second peripheral receiving circuit 20B3, and the single-ended antenna 20B1 form a second receiving circuit, through which DC blocking and pre-attenuation of the signal are achieved.

[0077] It is understood that this embodiment does not limit or elaborate on the specific circuit structure of the low-pass filter module 200, the first matching circuit 20A2, the first peripheral receiving circuit 20A3, the second matching circuit 20B2, and the second peripheral receiving circuit 20B3. The circuit structure of the near-field communication system in related technologies can be used for understanding, as long as the above effects can be achieved.

[0078] In some alternative embodiments, please refer to the references. Figure 1 , Figure 4 and Figure 6 , Figure 6 yes Figure 1 Another circuit connection structure diagram of the antenna system used for identifying dual tags is shown in this embodiment. The first switching device 401 includes a first MOS transistor. The gate of the first MOS transistor is electrically connected to the first control terminal 10-1, the first electrode of the first MOS transistor is electrically connected to the dual-ended differential antenna 20A1, and the second electrode of the first MOS transistor is grounded at GND.

[0079] The second switching device 402 includes a second MOSFET, the gate of which is electrically connected to the second control terminal 10-2, the first terminal of which is electrically connected to the single-ended antenna 20B1, and the second terminal of which is grounded to GND.

[0080] This embodiment explains that the first switching device 401, located between the first control terminal 10-1 and the dual-ended differential antenna 20A1 of the first identification path 20A, can be a MOS transistor. For example, if the first switching device 401 is a first MOS transistor, the gate of the first MOS transistor is electrically connected to the first control terminal 10-1, and the first control terminal 10-1 provides a control signal to the gate of the first MOS transistor. The first terminal of the first MOS transistor is electrically connected to the dual-ended differential antenna 20A1, and the second terminal of the first MOS transistor is grounded at GND. When the control signal provided by the first control terminal 10-1 enables the first MOS transistor to conduct, the dual-ended differential antenna 20A1 and the grounded terminal GND of the first terminal of the first MOS transistor can conduct. When the control signal provided by the first control terminal 10-1 turns off the first MOS transistor, the dual-ended differential antenna 20A1 and the grounded terminal GND of the first terminal of the first MOS transistor are disconnected. Similarly, the second switching device 402, located between the second control terminal 10-2 and the single-ended antenna 20B1 of the second identification path 20B, can also be a MOSFET device. For example, if the second switching device 402 is a second MOSFET, its gate is electrically connected to the second control terminal 10-2, and the second control terminal 10-2 provides a control signal to the gate of the second MOSFET. The first terminal of the second MOSFET is electrically connected to the single-ended antenna 20B1, and the second terminal of the second MOSFET is grounded (GND). When the control signal provided by the second control terminal 10-2 enables the second MOSFET to conduct, the single-ended antenna 20B1 and the grounded terminal GND of the first terminal of the second MOSFET are connected. When the control signal provided by the second control terminal 10-2 turns off the second MOSFET, the single-ended antenna 20B1 and the grounded terminal GND of the first terminal of the second MOSFET are disconnected. This embodiment uses a MOSFET structure for the first switching device 401 and the second switching device 402, which does not increase the design cost of the entire system and has a simple structure that is easily driven and controlled by the NFC control chip 10.

[0081] Optionally, both the first and second MOSFETs are P-type MOSFETs (not shown in the attached diagram), or both the first and second MOSFETs are N-type MOSFETs (e.g., ...). Figure 6 (As shown); at this time, the output level of the first control terminal 10-1 and the output level of the second control terminal 10-2 are out of phase. Assuming... Figure 6As shown, both the first and second MOSFETs are N-type MOSFETs. When the first identification path 20A is working, the first control terminal 10-1 provides a low-level potential, and the second control terminal 10-2 provides a high-level potential. The first N-type MOSFET is cut off, that is, the first and second terminals of the first switching device 401 are cut off. The second N-type MOSFET is turned on, that is, the first and second terminals of the second switching device 402 are turned on. Even if the antenna radiation field of the single-ended antenna 20B1 of the second identification path 20B inevitably overlaps with the dual-ended differential antenna 20A1 of the first identification path 20A, when the antenna radiation field energy of the single-ended antenna 20B1 is coupled to the dual-ended differential antenna 20A1 of the first identification path 20A, it will preferentially flow into the ground terminal GND due to the conduction of the second switching device 402 and be preferentially consumed by the ground terminal GND. This can effectively reduce the coupling and interference of the antenna radiation field of the single-ended antenna 20B1 of the second identification path 20B to the dual-ended differential antenna 20A1 of the first identification path 20A when the dual-ended differential antenna 20A1 of the first identification path 20A is working. Similarly, when the second identification path 20B is working, the first control terminal 10-1 provides a high-level potential, and the second control terminal 10-2 provides a low-level potential. The first MOSFET of the N-type MOSFET is turned on, that is, the first and second terminals of the first switching device 401 are turned on. The second MOSFET of the N-type MOSFET is turned off, that is, the first and second terminals of the second switching device 402 are turned off. Even if the antenna radiation field of the dual-ended differential antenna 20A1 of the first identification path 20A inevitably overlaps with the single-ended antenna 20B1 of the second identification path 20B, when the antenna radiation field energy of the dual-ended differential antenna 20A1 is coupled to the single-ended antenna 20B1 of the second identification path 20B, it will preferentially flow into the ground terminal GND due to the conduction of the first switching device 401 and be preferentially consumed by the ground terminal GND. This can effectively reduce the coupling and interference of the antenna radiation field of the dual-ended differential antenna 20A1 of the first identification path 20A to the single-ended antenna 20B1 of the second identification path 20B when the single-ended antenna 20B1 of the second identification path 20B is working.

[0082] Optional, such as Figure 1 , Figure 4 and Figure 7 , Figure 7 yes Figure 1 A schematic diagram of another circuit connection structure for an antenna system used to identify dual tags is shown in this embodiment. In this embodiment, one of the first MOS transistor and the second MOS transistor is a P-type MOS transistor and the other is an N-type MOS transistor; the first control terminal 10-1 and the second control terminal 10-2 are shorted.

[0083] This embodiment explains that when the first switching device 401 and the second switching device 402 are designed as MOSFETs, the first MOSFET of the first switching device 401 and the second MOSFET of the second switching device 402 can be of different types, such as the first MOSFET being an N-type MOSFET and the second MOSFET being a P-type MOSFET (e.g., Figure 7 (As shown in the figure), or if the first MOSFET is a P-type MOSFET and the second MOSFET is an N-type MOSFET (not shown in the figure), then the first control terminal 10-1 and the second control terminal 10-2 can be short-circuited. It can also be understood that the first control terminal 10-1 and the second control terminal 10-2 can share the interface of an NFC control chip 10. The NFC control chip 10 only needs to output a control signal to the shared first control terminal 10-1 and the second control terminal 10-2. Assuming the first MOSFET is an N-type MOSFET and the second MOSFET is a P-type MOSFET, when the first identification path 20A is working, the first control terminal 10-1 and the second control terminal 10-2 are shorted together to output a low-level potential. The first MOSFET of the N-type MOSFET is cut off, that is, the first and second terminals of the first switching device 401 are cut off. The second MOSFET of the P-type MOSFET is turned on, that is, the first and second terminals of the second switching device 402 are turned on. Even if the antenna radiation field of the single-ended antenna 20B1 of the second identification path 20B inevitably overlaps with the dual-ended differential antenna 20A1 of the first identification path 20A, when the antenna radiation field energy of the single-ended antenna 20B1 is coupled to the dual-ended differential antenna 20A1 of the first identification path 20A, it will preferentially flow into the ground terminal GND due to the conduction of the second switching device 402 and be preferentially consumed by the ground terminal GND. This can effectively reduce the coupling and interference of the antenna radiation field of the single-ended antenna 20B1 of the second identification path 20B to the dual-ended differential antenna 20A1 of the first identification path 20A when the dual-ended differential antenna 20A1 of the first identification path 20A is working. Similarly, when the second identification path 20B is working, the first control terminal 10-1 and the second control terminal 10-2 are shorted together to output a high-level potential. The first MOSFET of the N-type MOSFET is turned on, that is, the first and second terminals of the first switching device 401 are turned on. The second MOSFET of the P-type MOSFET is turned off, that is, the first and second terminals of the second switching device 402 are turned off. Even if the antenna radiation field of the dual-ended differential antenna 20A1 of the first identification path 20A inevitably overlaps with the single-ended antenna 20B1 of the second identification path 20B, when the antenna radiation field energy of the dual-ended differential antenna 20A1 is coupled to the single-ended antenna 20B1 of the second identification path 20B, it will preferentially flow into the ground terminal GND due to the conduction of the first switching device 401 and be preferentially consumed by the ground terminal GND. This can effectively reduce the coupling and interference of the antenna radiation field of the dual-ended differential antenna 20A1 of the first identification path 20A to the single-ended antenna 20B1 of the second identification path 20B when the single-ended antenna 20B1 of the second identification path 20B is working.

[0084] In this embodiment, the first MOSFET of the first switching device 401 and the second MOSFET of the second switching device 402 are designed to be of different types. The first MOSFET is an N-type MOSFET and the second MOSFET is a P-type MOSFET, or the first MOSFET is a P-type MOSFET and the second MOSFET is an N-type MOSFET. This allows the first control terminal 10-1 and the second control terminal 10-2 to be short-circuited. This means that the first control terminal 10-1 and the second control terminal 10-2 can share the interface of an NFC control chip 10. The NFC control chip 10 only needs to output one control signal to the shared first control terminal 10-1 and the shared second control terminal 10-2, which helps to save the driving power consumption of the NFC control chip 10.

[0085] In some alternative embodiments, please refer to the references. Figure 6 and Figure 8 , Figure 8 This is another structural schematic diagram of an antenna system for identifying dual tags provided in this embodiment. In this embodiment, there is a gap of 20K between the first coil of the dual-ended differential antenna 20A1 and the second coil of the single-ended antenna 20B1. The width of the gap 20K along the direction from the first coil to the second coil is D1, and the outer width of the first coil is D2; wherein, D1 = 1.5D2.

[0086] This embodiment explains that a certain distance of 20K is required between the first coil of the dual-ended differential antenna 20A1 and the second coil of the single-ended antenna 20B1 to avoid mutual interference between the first tag 30A covered by the first coil and the second tag 30B covered by the second coil in terms of identification effect. Along the direction from the first coil to the second coil, the width D1 of the 20K distance is preferably equal to 1.5 times the outer width D2 of the first coil. Thus, even when the first coil of the dual-ended differential antenna 20A1 and the second coil of the single-ended antenna 20B1 are close to each other, the influence of mutual coupling between the antennas can be avoided through the control of the first switching device 401 and the second switching device 402 in this embodiment, which effectively enhances the communication stability of the entire system and ensures the identification accuracy.

[0087] In some alternative embodiments, please refer to the references. Figure 1 , Figure 4 and Figure 9 , Figure 9 yes Figure 1 Another circuit connection structure diagram of the antenna system used to identify dual tags is shown in this embodiment. The NFC control chip 10 includes an ADC conversion module 10A, which is electrically connected to the first receiving terminal RXN, the second receiving terminal RXP, and the third receiving terminal RX, respectively.

[0088] The ADC conversion module 10A is configured to perform quantization conversion on the identification signal of the dual-ended differential antenna 20A1 received by the first receiving end RXN and the second receiving end RXP to obtain a first quantized value. When the first quantized value is lower than a first preset threshold, it is determined that there is no first tag 30A at the dual-ended differential antenna 20A1.

[0089] The ADC conversion module 10A is also configured to perform quantization conversion on the identification signal of the single-ended antenna 20B1 received by the third receiver RX to obtain a second quantized value. When the second quantized value is lower than the second preset threshold, it is determined that there is no second tag at the single-ended antenna 20B1.

[0090] This embodiment explains that when using the antenna system 000 for identifying dual tags, the user may replace the tags, resulting in a situation where a tag is missing at a certain antenna location. In this embodiment, an ADC conversion module 10A can be integrated within the NFC control chip 10. The ADC conversion module 10A is electrically connected to the first receiver RXN, the second receiver RXP, and the third receiver RX, respectively. The ADC conversion module 10A can pre-store a first preset threshold and a second preset threshold. In actual use, the ADC conversion module 10A can quantize the identification signal from the dual-ended differential antenna 20A1 received by the first receiver RXN and the second receiver RXP to obtain a first quantized value. This first quantized value is then compared with the first preset threshold stored in the ADC conversion module 10A. If the first quantized value is lower than the first preset threshold, it is determined that the first tag 30A is missing at the dual-ended differential antenna 20A1, accurately identifying that the system is currently in a state where the first tag 30A has been replaced. The ADC conversion module 10A can also perform quantization conversion based on the identification signal received by the single-ended antenna 20B1 from the third receiving end RX to obtain a second quantized value. The second quantized value is then compared with a second preset threshold stored in the ADC conversion module 10A. If the second quantized value is lower than the second preset threshold, it is determined that there is no second tag at the single-ended antenna 20B1. This can accurately identify that the current system is in the state of replacing the second tag 30B. By comparing and judging the received identification signal by the ADC conversion module 10A, the user experience can be improved.

[0091] In some alternative embodiments, please refer to the references. Figures 1-9 , Figure 10 , Figure 10This is a schematic diagram of the connection structure between a fragrance bottle carrier and an antenna system for identifying dual tags in an electronic device according to an embodiment of this disclosure. The electronic device 111 provided in this embodiment includes a fragrance bottle carrier 100 and an antenna system 000 for identifying dual tags as described in any of the above embodiments. The electronic device 111 provided in this disclosure has the beneficial effects of the antenna system 000 for identifying dual tags provided in this disclosure. For details, please refer to the specific descriptions of the antenna system 000 for identifying dual tags in the above embodiments. These details will not be repeated here.

[0092] The electronic device 111 in this embodiment can be an in-vehicle system, which may include a fragrance bottle carrier 100. The fragrance bottle carrier 100 is used to carry different fragrance bottles, such as fragrance bottles with different scents, or fragrance bottles with the same scent but different concentrations. The fragrance bottle carrier 100 may include two fragrance bottle interfaces 1001. By setting different labels on the fragrance bottle interfaces 1001, different types of fragrance bottles can be distinguished. For example, in this embodiment, the first label 30A and the second label 30B store information about different types of fragrance bottles, and the first label 30A and the second label 30B are respectively set in the two fragrance bottle interfaces 1001. The antenna system 000 for identifying dual tags provided in any of the above embodiments can identify and confirm the physical location of the first tag 30A and the second tag 30B (the principle and process of location identification will not be described in detail in this embodiment), thereby determining the corresponding position of different types of fragrance bottles in the fragrance bottle carrier device 100. The host computer can control the direct opening of the fragrance bottle at the required corresponding position, thereby providing the user of the electronic device 111 with the required fragrance environment.

[0093] It is understood that this embodiment is only an example illustrating one applicable environment for the antenna system 000 for identifying dual tags. In specific implementation, the application environment of the antenna system 000 for identifying dual tags includes, but is not limited to, this embodiment. It can also be applied to other usage environments that require identification and confirmation of the physical location of different structures. This embodiment will not elaborate on these details.

[0094] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0095] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An antenna system for identifying dual tags, characterized in that, It includes an NFC control chip, a first identification path, a second identification path, a first tag, and a second tag; wherein the NFC control chip communicates with the first tag through the first identification path, and the NFC control chip communicates with the second tag through the second identification path.

2. The antenna system for identifying dual tags according to claim 1, characterized in that, The NFC control chip includes a first control terminal and a second control terminal; A first switching device is provided between the first control terminal and the first identification path. The first terminal of the first switching device is electrically connected to the first identification path, and the second terminal of the first switching device is grounded. A second switching device is provided between the second control terminal and the second identification path. The first terminal of the second switching device is electrically connected to the second identification path, and the second terminal of the second switching device is grounded. When the first identification path is working, the second control terminal controls the first and second terminals of the second switching device to be turned on; When the second identification path is working, the first control terminal controls the first and second terminals of the first switching device to be turned on.

3. The antenna system for identifying dual tags according to claim 2, characterized in that, When the first identification path is working, the first control terminal controls the first and second terminals of the first switching device to be turned off. When the second identification path is working, the second control terminal controls the first and second terminals of the second switching device to be turned off.

4. The antenna system for identifying dual tags according to claim 2, characterized in that, The NFC control chip also includes a first transmitting end, a second transmitting end, a first receiving end, a second receiving end, and a third receiving end; The first transmitting end, the second transmitting end, the first receiving end, and the second receiving end are electrically connected to the first identification path. The first identification path includes at least a dual-ended differential antenna, and the dual-ended differential antenna includes a first coil, which covers the first tag. The first transmitting end, the second transmitting end and the third receiving end are electrically connected to the second identification path. The second identification path includes at least a single-ended antenna. The single-ended antenna includes a second coil, and the second coil covers the second tag. The first terminal of the first switching device is electrically connected to the dual-ended differential antenna, and the first terminal of the second switching device is electrically connected to the single-ended antenna.

5. The antenna system for identifying dual tags according to claim 4, characterized in that, The first switching device includes a first MOSFET, the gate of the first MOSFET is electrically connected to the first control terminal, the first terminal of the first MOSFET is electrically connected to the dual-ended differential antenna, and the second terminal of the first MOSFET is grounded. The second switching device includes a second MOSFET, the gate of the second MOSFET is electrically connected to the second control terminal, the first terminal of the second MOSFET is electrically connected to the single-ended antenna, and the second terminal of the second MOSFET is grounded.

6. The antenna system for identifying dual tags according to claim 5, characterized in that, Both the first MOSFET and the second MOSFET are P-type MOSFETs, or both the first MOSFET and the second MOSFET are N-type MOSFETs; The output level of the first control terminal and the output level of the second control terminal are out of phase.

7. The antenna system for identifying dual tags according to claim 5, characterized in that, One of the first MOSFET and the second MOSFET is a P-type MOSFET, and the other is an N-type MOSFET; The first control terminal and the second control terminal are short-circuited.

8. The antenna system for identifying dual tags according to claim 4, characterized in that, The first identification path further includes a low-pass filter module, a first matching circuit, and a first peripheral receiving circuit; the first transmitting end and the second transmitting end are respectively connected to the two input ends of the low-pass filter module, the first matching circuit is connected between the output end of the low-pass filter module and the dual-ended differential antenna, and the first receiving end and the second receiving end are respectively connected to the dual-ended differential antenna through the first peripheral receiving circuit; The second identification path also includes the low-pass filter module, the second matching circuit, and the second peripheral receiving circuit; The second matching circuit is connected between the output of the low-pass filter module and the single-ended antenna, and the third receiving end is connected to the single-ended antenna through the second peripheral receiving circuit.

9. The antenna system for identifying dual tags according to claim 4, characterized in that, The first coil and the second coil are separated by a gap along the direction from the first coil to the second coil, the width of the gap being D1, and the outer perimeter width of the first coil being D2; wherein, D1 = 1.5D2.

10. The antenna system for identifying dual tags according to claim 4, characterized in that, The NFC control chip includes an ADC conversion module, which is electrically connected to the first receiver, the second receiver, and the third receiver, respectively. The ADC conversion module is configured to perform quantization conversion based on the identification signal of the dual-ended differential antenna received by the first receiving end and the second receiving end to obtain a first quantization value. When the first quantization value is lower than a first preset threshold, it is determined that the first tag does not exist at the dual-ended differential antenna. The ADC conversion module is further configured to perform quantization value conversion based on the identification signal of the single-ended antenna received by the third receiving end to obtain a second quantization value. When the second quantization value is lower than a second preset threshold, it is determined that the second tag does not exist at the single-ended antenna.

11. An electronic device, characterized in that, Includes a fragrance bottle carrier and an antenna system for identifying dual tags as described in any one of claims 1-10; The fragrance bottle carrier includes two fragrance bottle interfaces, and the first label and the second label are respectively disposed in the two fragrance bottle interfaces.

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