Double-antenna system for label identification and vehicle

Abstract

The invention relates to the technical field of communication, and discloses a dual-antenna system for tag identification and a vehicle, the dual-antenna system comprises a control chip, a first antenna identification path, a second antenna identification path, a first tag, a second tag and a third tag; the first transmitting end and the second transmitting end of the control chip are configured to output signals in a time-sharing manner; a first coil included in a first antenna in the first antenna identification channel covers the first tag and the second tag, and a second coil included in a second antenna in the second antenna identification channel covers the second tag and the third tag; the dual-antenna system further comprises a selective switch device, and the selective switch device is configured to control time-sharing conduction of the first antenna identification access and the second antenna identification access. The vehicle comprises the fragrance bottle bearing device and the double-antenna system. According to the invention, on the basis of reducing the cost, a multi-label position identification function can be realized.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a dual-antenna system and a vehicle for tag identification. Background Art

[0002] Radio Frequency Identification (RFID) technology is a contactless automatic identification technology that involves wireless communication with RFID tags to read or write information to them. Specifically, a reader emits a radio frequency signal to generate a changing magnetic field. Once the RFID tag enters the magnetic field, an induced current is generated through the coil on the tag. The energy gained from the induced current transmits the product information stored in the RFID tag chip, or the tag actively transmits a signal of a certain frequency. The reader reads and decodes the information and sends it to a central information system for data processing. RFID tag technology has been widely used in various industries, such as large supermarkets, logistics systems, the Internet of Things, and in-vehicle control, for asset inventory, identification, and location. For example, RFID tags are installed on different items or products, and items or products in different locations are controlled and managed based on the information stored in the RFID tags.

[0003] Existing technologies typically use differential antennas to identify the locations of items with different tags. However, existing differential antennas cannot enable a single NFC chip (Near Field Communication Controller, NFCC, also known as an NFC control chip) to identify the physical locations of multiple tags. This requires the addition of a multiplexer or multiple NFC chips, and these chip structures are generally expensive. Therefore, achieving multi-tag location identification in existing technologies is costly.

[0004] Therefore, how to realize the recognition function of multiple tag positions while reducing costs is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] In order to solve the above technical problems, the present disclosure provides a dual-antenna system and a vehicle for tag identification, so as to solve the problem in the prior art that it requires high costs to realize the identification of multiple tag positions.

[0006] The present disclosure provides a dual-antenna system for tag identification, comprising a control chip, a first antenna identification path, a second antenna identification path, a first tag, a second tag, and a third tag;

[0007] The control chip includes at least a first transmitting end, a second transmitting end, a first receiving end, and a second receiving end. The first transmitting end and the second transmitting end are configured to output signals in a time-sharing manner. A first antenna identification path is electrically connected between the first transmitting end and the first receiving end, and a second antenna identification path is electrically connected between the second transmitting end and the second receiving end.

[0008] The first antenna identification path includes at least a first antenna, the first antenna includes a first coil, and the first coil covers the first tag and the second tag; the second antenna identification path includes at least a second antenna, the second antenna includes a second coil, and the second coil covers the second tag and the third tag;

[0009] The invention also includes a selection switch device configured to control the first antenna identification path and the second antenna identification path to be turned on in a time-sharing manner.

[0010] Optionally, the first coil does not overlap with the third tag, and the second coil does not overlap with the first tag.

[0011] Optionally, including a first working period and a second working period;

[0012] In the first working period, the control chip controls the first transmitting end to output a signal, and the selection switch device controls the first antenna identification path to be turned on;

[0013] In the second working period, the control chip controls the second transmitting end to output a signal, and the selection switch device controls the second antenna identification path to be turned on.

[0014] Optionally, the first antenna identification path includes a first low-pass filtering module, a first impedance matching circuit, and a first peripheral receiving circuit; the first antenna is electrically connected between the first impedance matching circuit and the ground terminal;

[0015] The second antenna identification path includes a second low-pass filter module, a second impedance matching circuit, and a second peripheral receiving circuit; the second antenna is electrically connected between the second impedance matching circuit and the ground terminal;

[0016] The selection switch device is arranged between the first antenna and the ground terminal, and the selection switch device is arranged between the second antenna and the ground terminal.

[0017] Further optionally, the selection switch device includes a first switch tube and a second switch tube;

[0018] A first electrode of the first switch tube is electrically connected to the first antenna, a second electrode of the first switch tube is electrically connected to the ground terminal, and a gate of the first switch tube is electrically connected to the first control terminal;

[0019] The first electrode of the second switch tube is electrically connected to the second antenna, the second electrode of the second switch tube is electrically connected to the ground end, and the gate of the second switch tube is electrically connected to the second control end.

[0020] Further optionally, a control signal output chip is further included, wherein the first output end of the control signal output chip is electrically connected to the first control end, and the second output end of the control signal output chip is electrically connected to the second control end.

[0021] Further optionally, the first low-pass filtering module includes a first inductor and a first capacitor group, one end of the first inductor is electrically connected to the first transmitting end, the other end of the first inductor is electrically connected to one end of the first capacitor group, and the other end of the first capacitor group is electrically connected to the ground end; a first node is included between the first inductor and the first capacitor group, the first impedance matching circuit includes a second capacitor group and a third capacitor group, one end of the second capacitor group is electrically connected to the first node, the other end of the second capacitor group is electrically connected to one end of the third capacitor group, and the other end of the third capacitor group is electrically connected to the ground end; a second node is included between the second capacitor group and the third capacitor group, and one end of the first antenna is electrically connected to the second node;

[0022] The second low-pass filtering module includes a second inductor and a fourth capacitor group, one end of the second inductor is electrically connected to the second transmitting end, the other end of the second inductor is electrically connected to one end of the fourth capacitor group, and the other end of the fourth capacitor group is electrically connected to the ground end; a third node is included between the second inductor and the fourth capacitor group, the second impedance matching circuit includes a fifth capacitor group and a sixth capacitor group, one end of the fifth capacitor group is electrically connected to the third node, the other end of the fifth capacitor group is electrically connected to one end of the sixth capacitor group, and the other end of the sixth capacitor group is electrically connected to the ground end; a fourth node is included between the fifth capacitor group and the sixth capacitor group, and one end of the second antenna is electrically connected to the fourth node.

[0023] Further optionally, the first capacitor group includes a first capacitor and a second capacitor connected in parallel, the second capacitor group includes a third capacitor and a fourth capacitor connected in parallel, and the third capacitor group includes a fifth capacitor, a sixth capacitor, and a seventh capacitor connected in parallel;

[0024] The fourth capacitor group includes an eighth capacitor and a ninth capacitor connected in parallel, the fifth capacitor group includes a tenth capacitor and an eleventh capacitor connected in parallel, and the sixth capacitor group includes a twelfth capacitor, a thirteenth capacitor, and a fourteenth capacitor connected in parallel.

[0025] Further optionally, the first peripheral receiving circuit includes a fifteenth capacitor and a first resistor, and the second peripheral receiving circuit includes a sixteenth capacitor and a second resistor;

[0026] The first receiving end is electrically connected to the first node via a fifteenth capacitor and a first resistor connected in series, and the second receiving end is electrically connected to the third node via a sixteenth capacitor and a second resistor connected in series.

[0027] Based on the same inventive concept, the present disclosure also provides a vehicle, including a fragrance bottle carrying device and the above-mentioned dual antenna system for tag identification; wherein the fragrance bottle carrying device includes three fragrance bottle interfaces, and the first tag, the second tag, and the third tag are respectively arranged in the three fragrance bottle interfaces.

[0028] The technical solution provided by the embodiments of the present disclosure has the following advantages over the prior art:

[0029] The present disclosure provides a dual-antenna system for tag identification, comprising a control chip, a first antenna identification path, a second antenna identification path, a first tag, a second tag, and a third tag. The first antenna identification path is electrically connected between a first transmitting end and a first receiving end of the control chip, and the second antenna identification path is electrically connected between a second transmitting end and a second receiving end. The first coil of the first antenna in the first antenna identification path covers the first and second tags, and the second coil of the second antenna in the second antenna identification path covers the second and third tags. The dual-antenna system also includes a selection switch device configured to control the time-sharing conduction of the first and second antenna identification paths. For example, during a first operating period of the dual-antenna system, the control chip controls the first transmitting end to output a signal. When the second transmitting end is in a closed state and does not output a signal, the selection switch device controls only the first antenna identification path to be conductive, while the second antenna identification path is closed. The first antenna operates, while the second antenna does not operate. During a second operating period of the dual-antenna system, the control chip controls the second transmitting end to output a signal. When the first transmitting end is in a closed state and does not output a signal, the selection switch device controls only the second antenna identification path to be conductive, while the first antenna identification path is closed. The second antenna operates, while the first antenna does not operate. The present disclosure uses a selective switching device to control the time-sharing conduction of the first antenna identification path and the second antenna identification path. This allows the first antenna to operate when the second antenna is inoperative, and vice versa. This allows one of the antennas to be disconnected in a time-sharing manner, effectively avoiding the mutual interference caused by the time-sharing single-ended transmission of signals by the first and second antennas, thereby effectively ensuring the reliability of the time-sharing operation of the first and second antennas. The present disclosure uses the selective setting of the switching device to switch the first and second antenna identification paths on and off. This not only effectively avoids interference between multiple antennas, but also enables location identification and information reading of one, two, or multiple tags. It also eliminates the need for multiplexers or multiple control chips, effectively reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0031] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 is a structural diagram of a dual-antenna system provided by an embodiment of the present disclosure;

[0033] Figure 2 yes Figure 1 A circuit connection diagram of a dual antenna system;

[0034] Figure 3 yes Figure 2 Schematic diagram of the working principle of the dual antenna system in the first working period;

[0035] Figure 4 yes Figure 2 Schematic diagram of the working principle of the dual antenna system in the second working period;

[0036] Figure 5 yes Figure 1 Another circuit connection diagram of the dual antenna system;

[0037] Figure 6 yes Figure 1 Another circuit connection diagram of the dual antenna system;

[0038] Figure 7 yes Figure 6 A schematic diagram of the structural details of the dual antenna system;

[0039] Figure 8 yes Figure 6 Another structural detail diagram of the dual antenna system;

[0040] Figure 9 yes Figure 6 Another structural detail diagram of the dual antenna system;

[0041] Figure 10 This is a schematic diagram of the connection structure of a fragrance bottle carrying device and a dual antenna system for tag identification in a vehicle structure provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0042] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0044] Please refer to Figure 1 and Figure 2 , Figure 1 is a structural diagram of a dual-antenna system provided by an embodiment of the present disclosure, Figure 2 yes Figure 1 A circuit connection diagram of a dual-antenna system (it can be understood that in order to clearly illustrate the physical overlapping relationship between the first antenna and the first tag and the second tag, and the physical overlapping relationship between the second antenna and the second tag and the third tag, Figure 1 and Figure 2 Transparency filling is performed. Figure 1 and Figure 2 Different filling patterns are used to distinguish the first antenna and the second antenna, and different filling patterns are used to distinguish the first tag, the second tag, and the third tag). The dual-antenna system 000 for tag identification provided in this embodiment includes a control chip 10, a first antenna identification path 20, a second antenna identification path 30, a first tag 401, a second tag 402, and a third tag 403;

[0045] The control chip 10 includes at least a first transmitting terminal TX1, a second transmitting terminal TX2, a first receiving terminal RXP, and a second receiving terminal RXN. The first transmitting terminal TX1 and the second transmitting terminal TX2 are configured to output signals in a time-sharing manner. A first antenna identification path 20 is electrically connected between the first transmitting terminal TX1 and the first receiving terminal RXP, and a second antenna identification path 30 is electrically connected between the second transmitting terminal TX2 and the second receiving terminal RXN.

[0046] The first antenna identification path 20 includes at least a first antenna 201, the first antenna 201 includes a first coil 201A, and the first coil 201A covers the first tag 401 and the second tag 402; the second antenna identification path 30 includes at least a second antenna 301, the second antenna 301 includes a second coil 301A, and the second coil 301A covers the second tag 402 and the third tag 403;

[0047] The invention further includes a selection switch device 50 configured to control the first antenna identification path 20 and the second antenna identification path 30 to be turned on in a time-sharing manner.

[0048] Specifically, the dual-antenna system 000 for tag identification provided in this embodiment can identify and locate the specific positions of the first tag 401, the second tag 402, and the third tag 403 through the first antenna identification path 20 and the second antenna identification path 30. The control chip 10 includes at least a first transmitter TX1, a second transmitter TX2, a first receiver RXP, and a second receiver RXN. The control chip 10 can be an NFC control chip (Near Field Communication Controller, NFCC, also known as an NFC chip). The first transmitter TX1 and the second transmitter TX2 are configured to output signals in a time-sharing manner, that is, the control chip 10 can control the first transmitter TX1 and the second transmitter TX2 to output signals in a time-sharing manner. When the first transmitter TX1 outputs a signal, the second transmitter TX2 is in a closed state and does not output a signal. When the second transmitter TX2 outputs a signal, the first transmitter TX1 is in a closed state and does not output a signal. A first antenna identification path 20 is electrically connected between the first transmitting end TX1 and the first receiving end RXP, and a second antenna identification path 30 is electrically connected between the second transmitting end TX2 and the second receiving end RXN. The first antenna identification path 20 includes at least a first antenna 201, and the second antenna identification path 30 includes at least a second antenna 301. That is, the first transmitting end TX1, the first antenna identification path 20, the first receiving end RXP, and a near-field communication circuit of the first antenna 201 are formed, and the second transmitting end TX2, the second antenna identification path 30, and the second receiving end RXN form a near-field communication circuit of the second antenna 301.

[0049] The structure of the first antenna 201 includes a first coil 201A, and the first coil 201A covers the first tag 401 and the second tag 402 at different positions, that is, the physical position relationship between the first coil 201A and the first tag 401 and the second tag 402 is that the first coil 201A overlaps with the first tag 401 and the second tag 402 at different positions; the structure of the second antenna 301 includes a second coil 301A, and the second coil 301A covers the second tag 402 and the third tag 403 at different positions, that is, the physical position relationship between the second coil 301A and the second tag 402 and the third tag 403 is that the second coil 301A overlaps with the second tag 402 and the third tag 403 at different positions. Figure 1 It is understood that the first tag 401, the second tag 402, and the third tag 403 in this embodiment refer to RFID (Radio Frequency Identification) tags, which can be understood as electronic tags installed or attached to an asset or item. The tags can store and transmit data via radio signals to achieve automatic identification and tracking of assets or items.

[0050] The dual-antenna system of this embodiment further includes a selection switch device 50. The selection switch device 50 is configured to control the time-sharing conduction of the first antenna identification path 20 and the second antenna identification path 30. That is, the selection switch device 50 can control the time-sharing conduction of the first antenna identification path 20 and the second antenna identification path 30. For example, in a first operating period of the dual-antenna system, the control chip 10 controls the first transmitting end TX1 to output a signal, and the second transmitting end TX2 is in a closed state and does not output a signal. The selection switch device 50 controls only the first antenna identification path 20 to be conductive, and the second antenna identification path 30 to be closed. The first antenna 201 is in operation, and the second antenna 301 is inoperative. In a second operating period of the dual-antenna system, the control chip 10 controls the second transmitting end TX2 to output a signal. When the first transmitting end TX1 is in a closed state and does not output a signal, the selection switch device 50 controls only the second antenna identification path 30 to be conductive, and the first antenna identification path 20 to be closed. The second antenna 301 is in operation, and the first antenna 201 is inoperative. In this embodiment, the first antenna identification path 20 and the second antenna identification path 30 are controlled to be turned on in a time-sharing manner by selecting the switch device 50. Thus, when the first antenna 201 is operating, the second antenna 301 is not operating, and when the second antenna 301 is operating, the first antenna 201 is not operating. Thus, one of the antennas can be disconnected in a time-sharing manner, thereby effectively avoiding the interference caused by the first antenna 201 and the second antenna 301 transmitting signals in a time-sharing single-ended manner, thereby effectively ensuring the reliability of the time-sharing operation of the first antenna 201 and the second antenna 301.

[0051] When the dual antenna system 000 for tag identification of this embodiment works, it first performs the first working period, such as Figure 3 As shown, Figure 3 yes Figure 2 The schematic diagram of the working principle of the dual-antenna system in the first working period can control the first transmitting end TX1 to output a signal through the control chip 10, and the second transmitting end TX2 is in a closed state and does not output a signal. The selection switch device 50 controls only the first antenna identification path 20 to be conductive, and only the first antenna 201 transmits a field, while the second antenna identification path 30 is not conductive, and the second antenna 301 does not transmit a field ( Figure 3The cross symbol is used to indicate that the second transmitting end TX2 is in the off state and does not output a signal, and the second antenna identification path 30 is not conductive). At this time, the first antenna 201 can be understood as a pure single-ended antenna, the first transmitting end TX1 outputs a signal, and the first antenna identification path 20 works, that is, the first tag 401 and the second tag 402 covered by the first coil 201A of the first antenna 201 are identified and read, and the returned signal is differentially received by the first receiving end RXP and the second receiving end RXN. The UID of the tag in the field of near field communication at this time, that is, UID1 of the first tag 401 and UID2 of the second tag 402, can be obtained by anti-collision means (multiple card tags are in the communication field, and the UID of the tag in the field can be obtained through the anti-collision process specified by the protocol). Similarly, the second working period is carried out, such as Figure 4 As shown, Figure 4 yes Figure 2 The working principle diagram of the dual-antenna system in the second working period can be used to control the second transmitting end TX2 to output a signal through the control chip 10, and the first transmitting end TX1 is in a closed state and does not output a signal. The selection switch device 50 controls only the second antenna identification path 30 to be conductive, and only the second antenna 301 transmits a signal. The first antenna identification path 20 is not conductive, and the first antenna 201 does not transmit a signal. Figure 4The cross symbol is used to indicate that the first transmitting end TX1 is in the off state and does not output a signal, and the first antenna identification path 20 is not conductive). At this time, the second antenna 301 can be understood as a pure single-ended antenna, the second transmitting end TX2 outputs a signal, and the second antenna identification path 30 works, that is, the second tag 402 and the third tag 403 covered by the second coil 301A of the second antenna 301 are identified and read, and the returned signals are differentially received by the first receiving end RXP and the second receiving end RXN. The UIDs of the tags in the field of near-field communication at this time, that is, UID2 of the second tag 402 and UID3 of the third tag 403, can be obtained through anti-collision. Then, a comparative analysis of the four UIDs is performed through the analysis module integrated in the control chip 10 or the main control connected to the control chip 10. The label corresponding to the identical UID is the label of the overlapping part of the first coil 201A and the second coil 301A. That is, after the comparative analysis, it is found that UID2 is repeated. Then the physical position of the second label 402 corresponding to UID2 is at the physical position where the first coil 201A and the second coil 301A overlap, and the physical position of the second label 402 can be confirmed. Finally, through the analysis module integrated in the control chip 10 or the main control connected to the control chip 10, it is analyzed that in the first working period, the selection switch device 50 controls the first antenna identification path 20 to be turned on and the second antenna identification path 30 to be turned off. Then the physical position of the first tag 401 corresponding to UID1 is in the area covered by the first coil 201A except the second tag 402, and then the physical position of the first tag 401 is identified and determined. In the second working period, the selection switch device 50 controls the second antenna identification path 30 to be turned on and the first antenna identification path 20 to be turned off. Then the physical position of the third tag 403 corresponding to UID3 is in the area covered by the second coil 301A except the second tag 402, and then the physical position of the third tag 403 is identified and determined, thereby completing the identification and confirmation of the physical positions of the first tag 401 and the third tag 403.

[0052] The dual-antenna system 000 for tag identification provided in this embodiment switches the first antenna identification path 20 and the second antenna identification path 30 on and off by selecting the setting of the switch device 50. This can not only effectively avoid interference between multiple antennas, but also realize the position identification and information reading of one, two or more tags, without the need to add a multiplexer or multiple control chips, which can effectively reduce costs.

[0053] It can be understood that this embodiment does not elaborate on the specific structure of the analysis module integrated in the control chip 10 or the main control connected to the control chip 10. During the specific implementation, it can be understood based on the setting of the main control module in the relevant technology. It is only necessary to ensure that the analysis module integrated in the control chip 10 or the main control connected to the control chip 10 can compare and analyze the UIDs of different tags.

[0054] It should be noted that this embodiment does not limit the specific structure of the selection switch device 50. During specific implementation, the selection switch device 50 can be a relay, a two-choice selection switch, or a switching transistor. It only needs to meet the requirement that the selection switch device 50 can control the time-sharing conduction of the first antenna identification path 20 and the second antenna identification path 30.

[0055] It can be understood that the first antenna identification path 20 of this embodiment includes at least the first antenna 201, and the second antenna identification path 30 includes at least the second antenna 301. The first antenna identification path 20 and the second antenna identification path 30 may also include other structures that can realize near-field communication functions, such as low-pass filters, impedance matching circuits, etc. For details, please refer to subsequent embodiments or the implementation structure of related near-field communication technologies for understanding. This embodiment will not be elaborated here.

[0056] Optional, such as Figure 1 As shown, in this embodiment, the first coil 201A included in the first antenna 201 structure only covers the first tag 401 and the second tag 402, and does not overlap with the third tag 403, thereby avoiding the UID of the third tag 403 interfering with the reading of the tags in the field when the first antenna 201 transmits and the second antenna 301 does not transmit during the first working period. Similarly, the second coil 301A included in the second antenna 301 structure only covers the second tag 402 and the third tag 403, and does not overlap with the first tag 401, thereby avoiding the UID of the first tag 401 interfering with the reading of the tags in the field when the second antenna 301 transmits and the first antenna 201 does not transmit during the second working period, thereby effectively improving the accuracy of tag position identification.

[0057] Optional, such as Figure 1-Figure 4 As shown, in this embodiment, the first antenna identification path 20 includes a first low-pass filter module 202, a first impedance matching circuit 203, and a first peripheral receiving circuit 204; the first antenna 201 is electrically connected between the first impedance matching circuit 203 and the ground terminal GND;

[0058] The second antenna identification path 30 includes a second low-pass filter module 302, a second impedance matching circuit 303, and a second peripheral receiving circuit 304; the second antenna 301 is electrically connected between the second impedance matching circuit 303 and the ground terminal GND;

[0059] The selection switch device 50 is disposed between the first antenna 201 and the ground terminal GND. The selection switch device 50 is disposed between the second antenna 301 and the ground terminal GND.

[0060] It is understood that the first antenna identification path 20 includes a first peripheral receiving circuit 204. In the signal receiving loop, the first receiving terminal RXP is electrically connected to the first antenna 201 via the first peripheral receiving circuit 204, thereby enabling the control chip 10 to demodulate the signal from the first antenna 201 through differential reception. The second antenna identification path 30 includes a second peripheral receiving circuit 304. In the signal receiving loop, the second receiving terminal RXN is electrically connected to the second antenna 301 via the second peripheral receiving circuit 304, thereby enabling the control chip 10 to demodulate the signal from the second antenna 301 through differential reception.

[0061] This embodiment explains that in the dual-antenna system 000, the first antenna 201 and the second antenna 301 are used to realize the near-field communication function, and the transmission of the first antenna 201 and the second antenna 301 is pure single-ended transmission, that is, when the first antenna 201 is working, the first transmitting end TX1 outputs a signal or when the second antenna 301 is working, the second transmitting end TX2 outputs a signal, and the two are different. Therefore, the first antenna identification path 20 and the second antenna identification path 30 need to be respectively provided with a low-pass filtering module and an impedance matching circuit. Specifically, the first antenna identification path 20 includes a first low-pass filtering module 202, a first impedance matching circuit 203, and a first peripheral receiving circuit 204. The first antenna 201 is electrically connected between the first impedance matching circuit 203 and the ground terminal GND. The selection switch device 50 is provided between the first antenna 201 and the ground terminal GND. When the selection switch device 50 controls the first antenna identification path 20 to be turned on, the first The transmitting end TX1 sends a signal, which passes through the first low-pass filtering module 202 to filter the signal output by the first transmitting end TX1 and output a sinusoidal wave waveform with a frequency of 13.56 MHz. The signal is then amplified after passing through the first impedance matching circuit 203. The first antenna 201 generates an induced magnetic field to transmit the radio frequency signal. The first tag 401 and the second tag 402 covered by the first coil 201A of the first antenna 201 are identified and read, and the returned signal is differentially received by the first receiving end RXP and the second receiving end RXN. Finally, the radio frequency signal received by the first antenna 201 is transmitted to the first receiving end RXP of the control chip 10 after passing through the first peripheral receiving circuit 204, and demodulated by the control chip 10. That is, the UID of the tag in the field of the near-field communication of the first antenna 201 at this time, that is, the UID1 of the first tag 401 and the UID2 of the second tag 402, can be obtained by anti-collision.Similarly, the second antenna identification path 30 includes a second low-pass filter module 302, a second impedance matching circuit 303, and a second peripheral receiving circuit 304. The second antenna 301 is electrically connected between the second impedance matching circuit 303 and the ground terminal GND. The selection switch device 50 is disposed between the second antenna 301 and the ground terminal GND. When the selection switch device 50 controls the second antenna identification path 30 to be conductive, the second transmitting end TX2 transmits a signal. The second low-pass filter module 302 filters the signal output from the second transmitting end TX2 and outputs a sinusoidal wave with a frequency of 13.56 MHz. The signal is then amplified by the second impedance matching circuit 303. The second antenna 301 generates an induced magnetic field to transmit the radio frequency signal. The second tag 402 and the third tag 403 covered by the second coil 301A of the second antenna 301 are identified and read, and the returned signals are differentially received by the first receiving end RXP and the second receiving end RXN. Finally, the radio frequency signal received by the second antenna 301 is transmitted to the second receiving end RXN of the control chip 10 after passing through the second peripheral receiving circuit 304, and is demodulated by the control chip 10. That is, the UIDs of the tags in the near-field communication of the second antenna 301 at this time, namely, UID2 of the second tag 402 and UID3 of the third tag 403, can be obtained through an anti-collision method. Through the above structure, the near-field communication function of the first antenna 201 and the second antenna 301 can be realized, thereby completing the identification and reading of the corresponding tag information.

[0062] In some optional embodiments, please refer to Figure 1 and Figure 5 , Figure 5 yes Figure 1 Another circuit connection diagram of the dual-antenna system (it can be understood that in order to clearly illustrate the physical overlapping relationship between the first antenna and the first tag and the second tag, and the physical overlapping relationship between the second antenna and the second tag and the third tag, Figure 5 (The figure shows a transparent fill). In this embodiment, the selection switch device 50 includes a first switch transistor 501 and a second switch transistor 502. Optionally, the first switch transistor 501 and the second switch transistor 502 may both be MOS transistors. In the figure of this embodiment, the first switch transistor 501 and the second switch transistor 502 are both NMOS transistors. In a specific implementation, the first switch transistor 501 and the second switch transistor 502 may also be other types of MOS transistors, which is not limited in this embodiment.

[0063] A first electrode (which may be a drain electrode) of the first switch tube 501 is electrically connected to the first antenna 201 , a second electrode (which may be a source electrode) of the first switch tube 501 is electrically connected to the ground terminal GND, and a gate electrode of the first switch tube 501 is electrically connected to the first control terminal CTRL1 ;

[0064] The first electrode (which may be the drain) of the second switch tube 502 is electrically connected to the second antenna 301 , the second electrode (which may be the source) of the second switch tube 502 is electrically connected to the ground terminal GND, and the gate of the second switch tube 502 is electrically connected to the second control terminal CTRL2 .

[0065] This embodiment explains that the selection switch device 50 can be provided with two switch tubes, such as a first switch tube 501 and a second switch tube 502, wherein the conduction and cutoff of the first switch tube 501 control the conduction and non-conduction of the first antenna identification path 20, and the conduction and cutoff of the second switch tube 502 control the conduction and non-conduction of the second antenna identification path 30. The conduction and cutoff of the first switch tube 501 and the conduction and cutoff of the second switch tube 502 can be independently controlled by the first control terminal CTRL1 and the second control terminal CTRL2, thereby realizing time-sharing conduction of the first antenna identification path 20 and the second antenna identification path 30.

[0066] In this embodiment, the first electrode of the first switch 501 is electrically connected to the first antenna 201, and the second electrode of the first switch 501 is electrically connected to the ground terminal GND. This means that the first switch 501 must be electrically connected to the ground terminal GND. This prevents the high-voltage sine wave generated by the operation of the first antenna 201 from affecting the performance of the first switch 501 when the first switch 501 is positioned elsewhere, thereby preventing abnormal operation of the first switch 501. In this embodiment, the first electrode of the second switch 502 is electrically connected to the second antenna 301, and the second electrode of the second switch 502 is electrically connected to the ground terminal GND. This means that the second switch 502 must be electrically connected to the ground terminal GND. This prevents the high-voltage sine wave generated by the operation of the second antenna 301 from affecting the performance of the second switch 502 when the second switch 502 is positioned elsewhere, thereby preventing abnormal operation of the second switch 502. This further facilitates stable control of the time-sharing conduction of the first antenna identification path 20 and the second antenna identification path 30 by the selective switch device 50.

[0067] Optional, such as Figure 1 and Figure 6 As shown, Figure 6 yes Figure 1Another circuit connection diagram of the dual antenna system in the embodiment. The dual antenna system 000 provided in this embodiment also includes a control signal output chip 60, the first output terminal 60-out1 of the control signal output chip 60 is electrically connected to the first control terminal CTRL1, and the second output terminal 60-out2 of the control signal output chip 60 is electrically connected to the second control terminal CTRL2. The control signal output chip 60 can be an additional control chip used to provide a control chip for controlling the on / off signals of the first switch tube 501 and the second switch tube 502. For example, the control signal output by the first output terminal 60-out1 of the control signal output chip 60 can be transmitted to the first control terminal CTRL1 to control the on / off of the first switch tube 501. When the first switch tube 501 is an NMOS tube, the control signal output by the first output terminal 60-out1 of the control signal output chip 60 is a high level. After being transmitted to the first control terminal CTRL1, it can control the first switch tube 501 to be on. The control signal output by the first output terminal 60-out1 of the control signal output chip 60 is a low level. After being transmitted to the first control terminal CTRL1, it can control the first switch tube 501 to be off. The control signal output by the second output terminal 60-out2 of the control signal output chip 60 can be transmitted to the second control terminal CTRL2 to control the conduction and cutoff of the second switch tube 502. When the second switch tube 502 is an NMOS tube, the control signal output by the second output terminal 60-out2 of the control signal output chip 60 is a high level. After being transmitted to the second control terminal CTRL2, the second switch tube 502 can be controlled to be turned on. The control signal output by the second output terminal 60-out2 of the control signal output chip 60 is a low level. After being transmitted to the second control terminal CTRL2, the second switch tube 502 can be controlled to be cut off.

[0068] It can be understood that in this embodiment, the first switch tube 501 and the second switch tube 502 need to be turned on in a time-sharing manner. Therefore, when the first switch tube 501 and the second switch tube 502 are both NMOS tubes, the signals of the first control terminal CTRL1 and the second control terminal CTRL2 are always inverted, that is, the control signal output from the first output terminal 60-out1 and the control signal output from the second output terminal 60-out2 of the control signal output chip 60 are always inverted signals.

[0069] In some other optional embodiments, one of the first switch tube 501 and the second switch tube 502 can be an NMOS tube and the other can be a PMOS tube (not shown in the figure). In this case, the gate of the first switch tube 501 and the gate of the second switch tube 502 can be connected to the same control terminal, that is, the control signal provided by an output terminal of the control signal output chip 60 can be used to achieve time-sharing conduction of the first switch tube 501 and the second switch tube 502, which is beneficial to reducing the number of output terminals of the control signal output chip 60 and saving costs.

[0070] Optional, such as Figure 6 and Figure 7 As shown, Figure 7 yes Figure 6 A schematic diagram of structural details of a dual-antenna system. In this embodiment, the first low-pass filtering module 202 includes a first inductor L1 and a first capacitor group C1. One end of the first inductor L1 is electrically connected to the first transmitting end TX1, the other end of the first inductor L1 is electrically connected to one end of the first capacitor group C1, and the other end of the first capacitor group C1 is electrically connected to the ground terminal GND; a first node N1 is included between the first inductor L1 and the first capacitor group C1, and the first impedance matching circuit 203 includes a second capacitor group C2 and a third capacitor group C3. One end of the second capacitor group C2 is electrically connected to the first node N1, the other end of the second capacitor group C2 is electrically connected to one end of the third capacitor group C3, and the other end of the third capacitor group C3 is electrically connected to the ground terminal GND; a second node N2 is included between the second capacitor group C2 and the third capacitor group C3, and one end of the first antenna 201 is electrically connected to the second node N2;

[0071] The second low-pass filtering module 302 includes a second inductor L2 and a fourth capacitor group C4, one end of the second inductor L2 is electrically connected to the second transmitting end TX2, the other end of the second inductor L2 is electrically connected to one end of the fourth capacitor group C4, and the other end of the fourth capacitor group C4 is electrically connected to the ground terminal GND; a third node N3 is included between the second inductor L2 and the fourth capacitor group C4, the second impedance matching circuit 303 includes a fifth capacitor group C5 and a sixth capacitor group C6, one end of the fifth capacitor group C5 is electrically connected to the third node N3, the other end of the fifth capacitor group C5 is electrically connected to one end of the sixth capacitor group C6, and the other end of the sixth capacitor group C6 is electrically connected to the ground terminal GND; a fourth node N4 is included between the fifth capacitor group C5 and the sixth capacitor group C6, and one end of the second antenna 301 is electrically connected to the fourth node N4.

[0072] This embodiment explains that the first low-pass filtering module 202 includes a first inductor L1 and a first capacitor group C1 connected in series, one end of the first inductor L1 is electrically connected to the first transmitting end TX1, and one end of the first capacitor group C1 is grounded, that is, electrically connected to the ground end GND. The first low-pass filtering module 202 is used to filter the signal output by the first transmitting end TX1 to obtain a filtered signal. The filtered signal is, for example, a fundamental signal obtained after filtering to eliminate the harmonic signal in the transmitting signal. After filtering by the first low-pass filtering module 202, the signal output by the first transmitting end TX1 can output a sinusoidal wave waveform with a frequency of 13.56 MHz. The first impedance matching circuit 203 includes a second capacitor group C2 and a third capacitor group C3 connected in series. One end of the second capacitor group C2 is electrically connected to a first node N1 between the first inductor L1 and the first capacitor group C1, and one end of the third capacitor group C3 is electrically connected to the ground terminal GND. One end of the first antenna 201 is electrically connected to a second node N2 between the second capacitor group C2 and the third capacitor group C3. The first impedance matching circuit 203 is used to amplify the signal. The first antenna 201 generates an induced magnetic field to transmit the RF signal. The first tag 401 and the second tag 402 covered by the first coil 201A of the first antenna 201 are then identified and read, thereby forming a signal output loop for the first antenna 201. Finally, the return signal is differentially received by the first receiving terminal RXP and the second receiving terminal RXN. The RF signal received by the first antenna 201 is transmitted to the first receiving terminal RXP of the control chip 10 after passing through the first peripheral receiving circuit 204, and is demodulated by the control chip 10.

[0073] Similarly, the second low-pass filtering module 302 includes a second inductor L2 and a fourth capacitor group C4 connected in series, one end of the second inductor L2 is electrically connected to the second transmitting end TX2, and one end of the fourth capacitor group C4 is grounded, that is, electrically connected to the ground end GND. The second low-pass filtering module 302 is used to filter the signal output by the second transmitting end TX2 to obtain a filtered signal. The filtered signal is, for example, a fundamental signal obtained after filtering to eliminate the harmonic signal in the transmitting signal. The signal output by the second transmitting end TX2 can output a sinusoidal wave waveform with a frequency of 13.56 MHz after filtering by the second low-pass filtering module 302. The second impedance matching circuit 303 includes a fifth capacitor group C5 and a sixth capacitor group C6 connected in series. One end of the fifth capacitor group C5 is electrically connected to a third node N3 between the second inductor L2 and the fourth capacitor group C4. One end of the sixth capacitor group C6 is electrically connected to the ground terminal GND. One end of the second antenna 301 is electrically connected to a fourth node N4 between the fifth capacitor group C5 and the sixth capacitor group C6. The second impedance matching circuit 303 is used to amplify the signal. The second antenna 301 generates an induced magnetic field to transmit the RF signal. The second tag 402 and the third tag 403 covered by the second coil 301A of the second antenna 301 are then identified and read, thereby forming a signal output loop for the second antenna 301. Finally, the return signal is differentially received by the first receiving terminal RXP and the second receiving terminal RXN. The RF signal received by the second antenna 301 is transmitted to the second receiving terminal RXN of the control chip 10 after passing through the second peripheral receiving circuit 304, and is demodulated by the control chip 10.

[0074] Optional, such as Figure 6 and Figure 8 As shown, Figure 8 yes Figure 6 Another structural detail diagram of the dual-antenna system, the first peripheral receiving circuit 204 includes a fifteenth capacitor C15 and a first resistor R1, and the second peripheral receiving circuit 304 includes a sixteenth capacitor C16 and a second resistor R2;

[0075] The first receiving terminal RXP is electrically connected to the first node N1 via a fifteenth capacitor C15 and a first resistor R1 connected in series, and the second receiving terminal RXN is electrically connected to the third node N3 via a sixteenth capacitor C16 and a second resistor R2 connected in series.

[0076] This embodiment explains that the dual-antenna system 000 may also include a receiving circuit composed of a first receiving terminal RXP, a second receiving terminal RXN, and two sets of capacitors and resistors connected in series on the control chip 10. The control chip 10 transmits the RF signal through the first transmitting terminal TX1, which is transmitted to the first antenna 201 after passing through the first low-pass filter module 202 and the first impedance matching circuit 203. The first antenna 201 generates an induced magnetic field to realize RF signal transmission. The RF signal received by the first antenna 201 is then transmitted through the first impedance matching circuit 203, the first peripheral receiving circuit 204, and the first receiving terminal R XP forms the receiving circuit, which is then transmitted to the control chip 10 and demodulated by the control chip 10. Similarly, the RF signal emitted by the control chip 10 through the second transmitting terminal TX2 passes through the second low-pass filter module 302 and the second impedance matching circuit 303, and is then transmitted to the second antenna 301. The second antenna 301 generates an induced magnetic field to achieve RF signal transmission. The RF signal received by the second antenna 301 then passes through the receiving circuit formed by the second impedance matching circuit 303, the second peripheral receiving circuit 304, and the second receiving terminal RXN, and is then transmitted to the control chip 10 and demodulated by the control chip 10. Regardless of whether the RF signal received by the antenna passes through the first antenna 201 or the second antenna 301, the signal enters the control chip 10 through the same receiving circuit and is then demodulated, which helps save costs.

[0077] Optional, such as Figure 6 and Figure 9 As shown, Figure 9 yes Figure 6 Another structural detail diagram of the dual-antenna system is shown in FIG. 1 . In this embodiment, in the equivalent circuit structure of the dual-antenna system 000 , the structure of each capacitor group can be:

[0078] The first capacitor group C1 includes a first capacitor C11 and a second capacitor C12 connected in parallel, the second capacitor group C2 includes a third capacitor C21 and a fourth capacitor C22 connected in parallel, and the third capacitor group C3 includes a fifth capacitor C31, a sixth capacitor C32, and a seventh capacitor C33 connected in parallel;

[0079] The fourth capacitor group C4 includes an eighth capacitor C41 and a ninth capacitor C42 connected in parallel, the fifth capacitor group C5 includes a tenth capacitor C51 and an eleventh capacitor C52 connected in parallel, and the sixth capacitor group C6 includes a twelfth capacitor C61, a thirteenth capacitor C62, and a fourteenth capacitor C63 connected in parallel.

[0080] The capacitor group in this embodiment refers to a parallel structure of multiple capacitors. By arranging parallel capacitors to form a capacitor group structure, the size of the capacitance value in different circuits can be flexibly controlled, which is beneficial to the flexibility of circuit design.

[0081] It is understandable that the Figure 9In the figure, resistors Rs1 and Rs2 can be understood as the resistance of the antenna itself, which represents the equivalent series resistance of the antenna. The metal wire (such as copper) of the antenna coil has inherent resistance, and energy loss is generated due to Joule heat when current passes through it. Resistances Rs1 and Rs2 reflect the energy loss characteristics of the antenna in actual operation.

[0082] In some optional embodiments, please refer to Figures 1-9 、 Figure 10 , Figure 10 It is a schematic diagram of the connection structure of a fragrance bottle carrying device and a dual antenna system for tag identification in a vehicle structure provided by an embodiment of the present disclosure. The vehicle 111 provided by this embodiment includes a fragrance bottle carrying device 001 and the dual antenna system 000 for tag identification in any of the above embodiments; the vehicle 111 provided by this embodiment of the present disclosure has the beneficial effects of the dual antenna system 000 for tag identification provided by the embodiment of the present disclosure. For details, please refer to the specific description of the dual antenna system 000 for tag identification in the above embodiments, which will not be repeated in this embodiment.

[0083] The interior of the vehicle 111 of this embodiment may include a fragrance bottle carrying device 001, and the fragrance bottle carrying device 001 is used to carry different fragrance bottles, such as the fragrance bottle carrying device 001 is used to carry fragrance bottles of different scents, or the fragrance bottle carrying device 001 is used to carry fragrance bottles of the same scent but different concentrations. The fragrance bottle carrying device 001 may include three fragrance bottle interfaces 0011. By setting different labels on the fragrance bottle interfaces 0011, different types of fragrance bottles can be distinguished. For example, in this embodiment, the first label 401, the second label 402, and the third label 403 correspondingly store information of different types of fragrance bottles, and the first label 401, the second label 402, and the third label 403 are respectively set in the three fragrance bottle interfaces 0011. The dual antenna system 000 for tag identification provided by any of the above embodiments can complete the identification and confirmation of the physical locations of the first tag 401, the second tag 402, and the third tag 403 (the principle and process of position identification are not repeated in this embodiment), thereby determining the corresponding positions of different types of fragrance bottles in the fragrance bottle carrier 001. The upper computer can control the direct opening of the required fragrance bottle at the corresponding position, thereby providing the fragrance environment required by the user in the vehicle 111.

[0084] It can be understood that this embodiment only illustrates an applicable environment of the dual antenna system 000 for tag identification. In specific implementation, the application environment of the dual antenna system 000 for tag identification includes but is not limited to this, and can also be applied to other usage environments that require identification and confirmation of the physical locations of different structures. This embodiment will not be elaborated here.

[0085] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0086] The foregoing description is intended only to provide specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. 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 the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments described herein, but rather to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

Claims

1. A dual-antenna system for tag identification, characterized in that: It includes a control chip, a first antenna identification path, a second antenna identification path, a first tag, a second tag, and a third tag; The control chip at least includes a first transmitting end, a second transmitting end, a first receiving end, and a second receiving end, wherein the first transmitting end and the second transmitting end are configured to output signals in a time-sharing manner; The first antenna identification path is electrically connected between the first transmitting end and the first receiving end, and the second antenna identification path is electrically connected between the second transmitting end and the second receiving end; The first antenna identification path includes at least a first antenna, the first antenna includes a first coil, and the first coil covers the first tag and the second tag; The second antenna identification path includes at least a second antenna, the second antenna includes a second coil, and the second coil covers the second tag and the third tag; The invention also includes a selection switch device configured to control the first antenna identification path and the second antenna identification path to be turned on in a time-sharing manner.

2. The dual-antenna system for tag identification according to claim 1, characterized in that: The first coil does not overlap with the third tag, and the second coil does not overlap with the first tag.

3. The dual-antenna system for tag identification according to claim 1, characterized in that: Including the first working period and the second working period; In the first working period, the control chip controls the first transmitting end to output a signal, and the selection switch device controls the first antenna identification path to be turned on; During the second working period, the control chip controls the second transmitting end to output a signal, and the selection switch device controls the second antenna identification path to be turned on.

4. The dual-antenna system for tag identification according to any one of claims 1 to 3, characterized in that: The first antenna identification path includes a first low-pass filtering module, a first impedance matching circuit, and a first peripheral receiving circuit; The first antenna is electrically connected between the first impedance matching circuit and the ground terminal; The second antenna identification path includes a second low-pass filtering module, a second impedance matching circuit, and a second peripheral receiving circuit; The second antenna is electrically connected between the second impedance matching circuit and the ground terminal; The selection switch device is arranged between the first antenna and the ground terminal, and the selection switch device is arranged between the second antenna and the ground terminal.

5. The dual-antenna system for tag identification according to claim 4, characterized in that: The selection switch device includes a first switch tube and a second switch tube; A first electrode of the first switching tube is electrically connected to the first antenna, a second electrode of the first switching tube is electrically connected to the ground end, and a gate of the first switching tube is electrically connected to the first control end; A first electrode of the second switch tube is electrically connected to the second antenna, a second electrode of the second switch tube is electrically connected to the ground end, and a gate of the second switch tube is electrically connected to the second control end.

6. The dual-antenna system for tag identification according to claim 5, characterized in that: It also includes a control signal output chip, wherein a first output end of the control signal output chip is electrically connected to the first control end, and a second output end of the control signal output chip is electrically connected to the second control end.

7. The dual-antenna system for tag identification according to claim 4, characterized in that: The first low-pass filtering module includes a first inductor and a first capacitor group, one end of the first inductor is electrically connected to the first transmitting end, the other end of the first inductor is electrically connected to one end of the first capacitor group, and the other end of the first capacitor group is electrically connected to the ground end; a first node is included between the first inductor and the first capacitor group, the first impedance matching circuit includes a second capacitor group and a third capacitor group, one end of the second capacitor group is electrically connected to the first node, the other end of the second capacitor group is electrically connected to one end of the third capacitor group, and the other end of the third capacitor group is electrically connected to the ground end; a second node is included between the second capacitor group and the third capacitor group, and one end of the first antenna is electrically connected to the second node; The second low-pass filtering module includes a second inductor and a fourth capacitor group, one end of the second inductor is electrically connected to the second transmitting end, the other end of the second inductor is electrically connected to one end of the fourth capacitor group, and the other end of the fourth capacitor group is electrically connected to the ground end; a third node is included between the second inductor and the fourth capacitor group, the second impedance matching circuit includes a fifth capacitor group and a sixth capacitor group, one end of the fifth capacitor group is electrically connected to the third node, the other end of the fifth capacitor group is electrically connected to one end of the sixth capacitor group, and the other end of the sixth capacitor group is electrically connected to the ground end; a fourth node is included between the fifth capacitor group and the sixth capacitor group, and one end of the second antenna is electrically connected to the fourth node.

8. The dual-antenna system for tag identification according to claim 7, characterized in that: The first capacitor group includes a first capacitor and a second capacitor connected in parallel, the second capacitor group includes a third capacitor and a fourth capacitor connected in parallel, and the third capacitor group includes a fifth capacitor, a sixth capacitor, and a seventh capacitor connected in parallel; The fourth capacitor group includes an eighth capacitor and a ninth capacitor connected in parallel, the fifth capacitor group includes a tenth capacitor and an eleventh capacitor connected in parallel, and the sixth capacitor group includes a twelfth capacitor, a thirteenth capacitor, and a fourteenth capacitor connected in parallel.

9. The dual-antenna system for tag identification according to claim 7, characterized in that: The first peripheral receiving circuit includes a fifteenth capacitor and a first resistor, and the second peripheral receiving circuit includes a sixteenth capacitor and a second resistor; The first receiving end is electrically connected to the first node via the fifteenth capacitor and the first resistor connected in series, and the second receiving end is electrically connected to the third node via the sixteenth capacitor and the second resistor connected in series.

10. A vehicle, characterized in that: It comprises a fragrance bottle carrying device and a dual antenna system for tag identification according to any one of claims 1 to 9; The fragrance bottle carrying device includes three fragrance bottle interfaces, and the first label, the second label, and the third label are respectively arranged in the three fragrance bottle interfaces.

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