Switchable multi-band tag

Abstract

The utility model discloses a switchable multi-band label, which comprises a label main body, a movable carrier, a chip and a plurality of antennas, the antennas are arranged on the label main body, the positions of the label main body corresponding to the antennas are respectively provided with an installation groove for installing the movable carrier, the chip is fixed on the movable carrier, and the chip is fixed on the movable carrier. And the chip is arranged to be electrically connected with the antenna corresponding to the mounting groove when the movable carrier is arranged in any mounting groove. The utility model provides a switchable multi-frequency-band tag, which can change the working frequency of the tag as required, so that one electronic tag can be suitable for use scenes of multiple frequency bands, and the universality is strong.

Description

Technical Field

[0001] This utility model relates to the technical field of radio frequency identification, specifically a switchable multi-band tag. Background Technology

[0002] Radio Frequency Identification (RFID) is a non-contact automatic identification technology. Its basic principle is to use radio frequency signals and spatial coupling (inductive or electromagnetic coupling) transmission characteristics to achieve automatic identification of the object being identified. The frequency used by the electronic tags and readers in an RFID system is called the RFID operating frequency. Currently, RFID uses frequencies spanning multiple bands, including low frequency, high frequency, ultra-high frequency, and microwave.

[0003] Different frequency tags have different characteristics. For example, low-frequency tags are inexpensive, energy-saving, have strong penetrating power through scrap metal, and their operating frequency is unaffected by radio frequencies, making them suitable for objects with high water content, such as fruits. High-frequency tags are medium-to-short range identification tags with moderate read / write speeds and relatively low prices, and are used in applications such as electronic tickets and smart cards. Ultra-high frequency (UHF) tags have a wide range and fast data transmission speed, but they are more energy-intensive, have weaker penetration, and require less interference in their operating area, making them suitable for monitoring goods in logistics fields such as ports and warehouses. Therefore, different applications require the use of electronic tags in different frequency bands. This presents at least the following challenges to existing electronic tags:

[0004] 1-Problems with using multiple tags: Existing electronic tags correspond to only one specific location or function. If different reading frequencies and distances are required, multiple different tags need to be used, which not only increases costs but also causes inconvenience.

[0005] 2. Issues with lost and difficult-to-find tags: When one person is responsible for multiple individual tags, there is a possibility that some tags may be forgotten or even lost. In addition, when in a specific application environment, it takes time to find the corresponding tags, resulting in a poor user experience.

[0006] 3- The problem of multiple tags requiring multiple information writes: The existing multiple tags correspond to multiple chips, and information needs to be written to multiple chips;

[0007] 4. Issues where damaged tags require replacement of the entire tag: Existing tags, whether damaged by a single chip or a single antenna, require replacement of the entire tag. Utility Model Content

[0008] The present invention aims to at least partially solve one of the technical problems in the related art: to provide a switchable multi-band tag that can change the operating frequency of the tag as needed, thereby enabling a single electronic tag to be used in multiple frequency band scenarios, and thus has strong versatility.

[0009] Therefore, one objective of this utility model is to provide a switchable multi-band tag, which includes a tag body, a movable carrier, a chip, and multiple antennas. Each antenna is arranged on the tag body, and the tag body is provided with a mounting slot for mounting the movable carrier at the position corresponding to each antenna. The chip is fixed on the movable carrier, and the chip is configured to be electrically connected to the antenna corresponding to any mounting slot when the movable carrier is placed in any mounting slot.

[0010] The above technical solution has the following advantages or beneficial effects: First, the chip can selectively connect to multiple antennas of different frequency bands, thereby forming electronic tags with different operating frequency bands, meeting the needs of various application scenarios, with strong versatility, and the tag can be used in various scenarios, which reduces the overall cost; second, only one tag is needed, so there is no need to classify and carry multiple tags, which brings convenience to storage and carrying; finally, different application scenarios share a single chip, thus saving the work of recording data on multiple chips separately.

[0011] According to one example of this utility model, the antenna is placed inside the tag body, and the top surface of the tag body has a recessed mounting groove. The connection end of the antenna is located at the bottom of the corresponding mounting groove. Using a built-in antenna ensures accurate antenna positioning, facilitating precise alignment and electrical connection between the chip and the antenna. Simultaneously, the built-in design protects the antenna from damage caused by external objects.

[0012] According to one example of the present invention, the chip is embedded in the bottom surface of a movable carrier, and when the lower end of the movable carrier is inserted into the corresponding mounting slot, the chip is electrically connected to the connection end of the antenna corresponding to the mounting slot.

[0013] According to one example of this utility model, the bottom surface of the movable carrier has a chip slot, and the chip is embedded in the chip slot. The chip slot allows the chip to be accurately installed on the bottom surface of the movable carrier, so that when the movable carrier is inserted into the mounting slot, it can contact the antenna at the bottom of the mounting slot and complete the electrical connection.

[0014] According to one example of this invention, the chip is provided with a conductive plate. When the conductive plate descends to its extreme position within the mounting slot, it connects to the connection end of the antenna, thereby electrically connecting the chip to the antenna via the conductive plate. The conductive plate makes the electrical connection between the chip and the antenna more reliable and stable, reducing the problem of connection failures caused by misalignment between the chip and the antenna.

[0015] According to one example of the present invention, the tag body is provided with a reference point, and the plurality of antennas are arranged sequentially along the circumference of the reference point.

[0016] According to one example of this utility model, the label body is provided with a swing arm, one end of which is rotatably engaged with a reference point on the label body. A movable carrier is disposed on the other end of the swing arm, and the swing arm drives the movable carrier to rotate, so that the movable carrier can rotate to any mounting slot. The rotation of the swing arm causes the movable carrier to drive the chip to rotate, thereby allowing the chip to move to the corresponding mounting slot more quickly and accurately.

[0017] According to one example of the present invention, the end of the swing arm is connected to the label body via a connecting seat, the connecting seat being configured to allow the swing arm to rotate circumferentially along the connecting seat and to move up and down axially along the connecting seat.

[0018] According to one example of this utility model, the tag body includes an upper shell and a lower shell, which together form a space for accommodating the antenna. The top surface of the upper shell is recessed to form a mounting groove. Because the upper and lower shells are detachable, in the event of partial antenna or chip damage, the entire tag body can be opened to replace some components, reducing usage costs compared to replacing the entire tag.

[0019] According to an example of the present invention, the connecting seat includes a rotating shaft and a spring. The upper shell of the label body is recessed along the position of the reference point to form a shaft hole. The upper end of the rotating shaft is fixed to the swing arm, and the lower end extends into the shaft hole and extends radially outward to form a flange. The spring is sleeved on the outside of the rotating shaft. The lower end of the spring abuts against the flange, and the upper end abuts against the stepped surface at the opening of the shaft hole.

[0020] According to one example of the present invention, the movable carrier is movably connected to the swing arm so that the movable carrier has a connected state that descends into the mounting slot and a reset state that disengages from the mounting slot.

[0021] Compared to existing ordinary electronic tags, the electronic tag in this patent application has advantages in at least the following aspects: 1. Superior integration performance: The electronic tag in this embodiment uses a single chip to switch antennas at different frequencies and distances, solving the problem in existing technologies where each tag corresponds to a specific location or function. This eliminates the need for multiple different tags, greatly improving integration performance. 2. Low cost: Eliminating the need to purchase multiple different tags significantly reduces costs, making it affordable for ordinary consumers. 3. Portability: Only one tag needs to be carried, avoiding the hassle of carrying multiple tags in existing technologies and greatly improving the user experience. 4. Low risk of loss: Operation is only required on one tag, avoiding the hassle of searching for multiple tags in existing technologies and greatly reducing the risk of loss. 5. High adaptability: It can adapt to different reading needs, whether it's NFC near-field reading or 5G long-field reading, which can be achieved by adjusting the chip's position, greatly improving its adaptability.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the switchable multi-band tag of this utility model.

[0024] Figure 2 This is a top view of the switchable multi-band tag of this utility model.

[0025] Figure 3 for Figure 2 A cross-sectional view along the "AA" direction.

[0026] Figure 4 for Figure 3 A magnified view of a portion of region "B".

[0027] Figure 5 for Figure 3 A magnified view of a portion of the "C" region.

[0028] Figure 6 for Figure 3 Axonometric view of the mid-section view.

[0029] Figure 7 for Figure 3 A disassembly diagram showing the moving vehicle and swing arm away from the tag body.

[0030] Figure 8 This is a schematic diagram of a chip with conductive plates.

[0031] Among them, 1. Tag body; 1.1 Upper shell; 1.2 Lower shell; 2. Movable carrier; 2.1 Chip slot; 3. Chip; 4. Antenna; 5. Mounting slot; 6. Conductive sheet; 7. Swing arm; 8. Rotating shaft; 9. Spring; 10. Flange; 11. Shaft hole; 11.1 Step surface. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0033] The switchable multi-band tag according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0034] This invention provides a switchable multi-band tag, as shown in the figure. It includes a tag body 1, a movable carrier 2, a chip 3, and an antenna array. The antenna array consists of at least two antennas 4 of different frequencies, which are arranged at intervals on the tag body 1. The tag body 1 has mounting slots 5 for mounting the movable carrier 2 at positions corresponding to each antenna 4. The chip 3 is fixed to the movable carrier 2 and has a conductive sheet 6 exposed outside the movable carrier 2. The chip 3 is configured to be electrically connected to the antenna 4 corresponding to any mounting slot 5 via the conductive sheet 6 when the movable carrier 2 is placed in any mounting slot 5. In this embodiment, the operator can move the movable carrier 2 to place it in any selected mounting slot 5. During this process, the chip 3 on the movable carrier 2 is electrically connected to the antenna 4 corresponding to the selected mounting slot 5, thus the antenna 4 and the chip 3 constitute an electronic tag for one frequency band. In this embodiment, the chip 3 and antenna 4 need to be electrically connected through direct contact. However, the chip is small in size, and during the downward movement of the chip 3 driven by the moving carrier 2, improper installation or assembly errors between the moving carrier 2 and the mounting slot 5 can easily lead to poor contact or even a short circuit between the chip 3 and antenna 4. To ensure a stable and reliable electrical connection between the chip 3 and antenna 4, such as... Figure 8 As shown, the chip 3 is provided with a conductive sheet 6, which is electrically connected to the chip 3. When the chip 3 is embedded in the movable carrier 2, the conductive sheet 6 is exposed. When the conductive sheet 6 descends to its limit position in the mounting groove 5, it connects to the connection end of the antenna 4, so that the chip 3 is electrically connected to the antenna 4 through the conductive sheet 6. The conductive sheet 6 is a thin sheet structure with a large area. Therefore, the connection end of the antenna 4 only needs to abut against any position on the conductive sheet 6 to complete the electrical connection, ensuring a stable and reliable electrical connection process.

[0035] The frequency used by the electronic tag to operate is called the RFID operating frequency. Currently, RFID uses frequencies spanning multiple bands, including low frequency, high frequency, ultra-high frequency, and microwave. Low frequency RFID tags, or simply low frequency tags, operate in the range of 30kHz-300kHz, with typical operating frequencies of 125kHz and 133kHz. High frequency RFID tags generally operate in the range of 3MHz-30MHz, with a typical operating frequency of 13.56MHz. Ultra-high frequency and microwave RFID tags, or simply microwave RFID tags, typically operate at frequencies of 433.92MHz, 862(902)MHz-928MHz, 2.45GHz, and 5.8GHz.

[0036] Based on the improved embodiment, the antenna 4 is placed inside the tag body 1, and the top surface of the tag body 1 has a recessed mounting groove 5. The connection end of the antenna 4 is located at the bottom of the corresponding mounting groove 5. Specifically, the tag body 1 has an antenna groove, and each antenna is embedded in its corresponding antenna groove. The connection end of each antenna 4 corresponds to the mounting groove 5, so that when the movable carrier 2 is inserted into the corresponding mounting groove 5, the chip 3 on the movable carrier 2 is aligned with the connection end of the antenna 4, and the chip 3 is electrically connected to the antenna 4 after the movable carrier 2 is installed in place.

[0037] Furthermore, the chip 3 is embedded in the bottom surface of the movable carrier 2. When the lower end of the movable carrier 2 is inserted into the corresponding mounting slot 5, the chip 3 is electrically connected to the connection end of the antenna 4 corresponding to the mounting slot 5.

[0038] Specifically, the bottom surface of the mobile carrier 2 has a chip slot 2.1, and the chip 3 is embedded in the chip slot 2.1.

[0039] In the above embodiments, the chip 3 is moved by the mobile carrier 2, allowing the chip 3 to arbitrarily select one of the antennas 4 for electrical connection. Therefore, the corresponding antennas can be selected to form electronic tags of the corresponding frequency bands according to different usage scenarios. The switchable multi-band tag of this embodiment can be applied to different scenarios and has strong versatility. The following are several preferred examples of the method of transferring the chip 3 between multiple mounting slots 5 on the tag body 1.

[0040] One of the preferred examples:

[0041] The mobile carrier 2 is connected to the tag body 1 by a flexible rope. Personnel can take out the mobile carrier 2 at will and insert it into the corresponding mounting slot 5 so that the chip 3 and the antenna 4 in the mounting slot 5 form an electronic tag of the required frequency band. When the mobile carrier 2 is taken out of the mounting slot 5, it will not be lost due to the connection of the rope.

[0042] Preferably, the tag body 1 has an empty groove at the middle position along the horizontal direction. This groove has the same structure as the mounting slot 5. Thus, the idle movable carrier 2 can be inserted into the empty groove, which also serves to protect the chip 3. When the electronic tag is needed, the movable carrier 2 can be simply pulled out of the empty groove and inserted into the corresponding mounting slot 5 to be used as an electronic tag for a specific frequency band.

[0043] Preferably, to prevent the movable carrier 2 from detaching from the mounting slot 5 or groove, the outer wall of the movable carrier 2 is provided with positioning protrusions or recesses. The inner wall of the mounting slot 5 and groove has positioning recesses and positioning protrusions that match the protrusions or recesses. This allows the movable carrier 2 to be positioned with the mounting slot 5 or groove after it is inserted into the mounting slot 5 or groove and moves into place. That is, the protrusion on the outer wall of the movable carrier 2 is embedded in the positioning recess on the inner wall of the mounting slot 5 or groove; or the positioning protrusion on the inner wall of the mounting slot 5 or groove is embedded in the recess on the outer wall of the movable carrier 2.

[0044] Second preferred example:

[0045] like Figure 2 As shown, a reference point is provided on the tag body 1, and an axial line is constructed through the reference point. The multiple antennas 4 are arranged sequentially along the circumference of the axis where the reference point is located.

[0046] Specifically, the tag body 1 is provided with a swing arm 7. One end of the swing arm 7 is rotatably engaged with the position of the reference point on the tag body 1. The movable carrier 2 is disposed on the other end of the swing arm 7. The swing arm 7 drives the movable carrier 2 to rotate, so that the movable carrier 2 can rotate to any of the mounting slots 5. Preferably, there are four antennas 4, which are evenly distributed circumferentially along the axis of the reference point. The four antennas are fixed in the antenna slots. During the rotation of the movable carrier 2 by the swing arm 7, the movable carrier 2 can pass through the position of each antenna in sequence. By driving the movable carrier 2 downward, the movable carrier 2 is inserted into the corresponding mounting slot 5, so that the chip 3 is electrically connected to the antenna 4.

[0047] For the moving vehicle 2 moving upward and downward along the axis of the label body 1, that is... Figure 3As shown in the vertical direction, one specific example of this movable carrier is as follows: the end of the swing arm 7 forms a ring structure, which fits over the movable carrier 2, allowing the movable carrier 2 to be movably connected to the swing arm 7. Thus, by applying an external force, the movable carrier 2 can move upwards or downwards. The movable carrier 2 has a connected state where it is inserted into the mounting slot 5 downwards, and a reset state where it is pushed upwards into the mounting slot 5. Specifically, when the movable carrier 2 rotates with the swing arm 7 to a position above and aligned with the corresponding mounting slot 5, pressing the movable carrier 2 causes it to descend into the mounting slot 5, electrically connecting the chip 3 on the movable carrier 2 to the antenna 4; conversely, applying a pulling force to the movable carrier 2 causes it to rise until it detaches from the mounting slot 5.

[0048] Preferably, the movable carrier 2 is slidably fitted to the end of the swing arm 7, and the outer side wall of the movable carrier 2 is provided with an outwardly protruding limiting protrusion to limit the upward and downward positions of the movable carrier 2. Furthermore, a thrust spring for driving the movable carrier 2 upward is provided between the movable carrier 2 and the swing arm, the thrust spring being sleeved on the outside of the movable carrier 2 and its two ends respectively abutting against the protrusion on the outer side wall of the movable carrier 2 and the swing arm 7.

[0049] A second specific example of the activity carrier 2: the end of the swing arm 7 is connected to the label body 1 via a connecting seat, the connecting seat being configured to allow the swing arm 7 to rotate circumferentially along the connecting seat and to rise and fall axially along the connecting seat.

[0050] Based on the above embodiments, preferably, the tag body 1 includes an upper shell 1.1 and a lower shell 1.2, which together form a space for accommodating the antenna 4. The top surface of the upper shell 1.1 is recessed to form a mounting groove 5. It should be understood that the thickness of the electronic tag can be extremely thin, and the thickness of the tag body 1 in the figure is only a schematic diagram to show the various parts more clearly.

[0051] like Figure 4As shown, the connecting seat includes a rotating shaft 8 and a spring 9. The upper shell 1.1 of the label body 1 has an indentation forming a shaft hole 11 at the location of the reference point. The upper end of the rotating shaft 8 is fixed to the swing arm 7, and the lower end extends into the shaft hole 11 and extends radially outward to form a flange 10. The spring 9 is sleeved on the outside of the rotating shaft 8. The lower end of the spring 9 abuts against the flange 10, and the upper end abuts against the stepped surface 11.1 at the opening of the shaft hole 11. Specifically, the shaft hole 11 extends to the bottom surface of the lower shell 1.2, and the flange 10 is threadedly connected to the rotating shaft 8. The installation process of the connector is as follows: first, insert the rotating shaft into the shaft hole 11, then put the spring 9 on the outside of the rotating shaft 8 from bottom to top and place it in the shaft hole 11. At this time, the upper end of the spring 9 abuts against the stepped surface 11.1 of the upper shell 1.1 located at the shaft hole 11. Finally, thread the flange 10 from bottom to top to the lower end of the rotating shaft 8 so that the lower end of the spring 9 abuts against the flange 10.

[0052] It should be understood that the electrical connection between chip 3 and antenna 4 in the above embodiments refers to direct contact between the two or connection via conductive wires to form a circuit. Compared to non-contact coupling connection, this connection method is more stable and less prone to disconnection.

[0053] Based on the structure of the above embodiments, its working principle is as follows:

[0054] Step 1: Select the required frequency and distance for the electronic tag based on the application scenario. For example, if NFC near-field reading is required, you can select the NFC frequency and distance antenna.

[0055] Step 2: Rotate the swing arm 7 to position the movable carrier 2 above the corresponding antenna 4. Specifically, grasp the swing arm 7 and pull it upwards. The upward movement of the swing arm 7 compresses the spring. When the movable carrier 2 at the end of the swing arm 7 is completely disengaged from the mounting slot 5, the swing arm 7 can rotate around the axis. Release the swing arm 7 when it reaches the desired mounting slot 5. Under the elastic restoring force of the spring, the movable carrier 2 moves downwards, causing the chip on the bottom surface of the movable carrier 2 to fit tightly against the antenna, completing the electrical connection.

[0056] Step 3: Perform the read operation using the selected antenna. For example, use an antenna with NFC frequency and range for NFC near-field reading.

[0057] Step 4: After completing the reading operation, if you need to use antennas of other frequencies and distances, you can repeat steps 2 and 3.

[0058] Based on the above embodiments, this electronic tag can be widely used in fields such as radio frequency identification (RFID) technology and antenna technology. For example, in applications where vehicles can intelligently enter and exit at a distance of 5-10 meters, the swing arm 7 can be moved to an antenna at a distance of 5-10 meters. In applications such as NFC-based access control for subway entrances and exits, where identification is done at close range, the swing arm 7 can be moved to an NFC antenna. This flexibility and adaptability give the tag of this technical solution a broad application prospect in the field of RFID technology.

[0059] It should be noted that in the description of this utility model, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0061] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0062] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0065] For those skilled in the art, various changes and modifications will undoubtedly be apparent after reading the above description. Therefore, the appended claims should be considered as covering all changes and modifications that encompass the true intent and scope of this utility model. Any and all equivalent scope and content within the scope of the claims should be considered as still falling within the intent and scope of this utility model.

Claims

1. A switchable multi-band tag, characterized in that: The device includes a tag body (1), a mobile carrier (2), a chip (3), and multiple antennas (4). Each antenna (4) is arranged on the tag body (1). The tag body (1) is provided with mounting slots (5) for mounting the mobile carrier (2) at the positions corresponding to each antenna (4). The chip (3) is fixed on the mobile carrier (2) and has a conductive sheet (6) exposed outside the mobile carrier (2). The chip (3) is configured to be electrically connected to the antenna (4) corresponding to the mounting slot (5) through the conductive sheet (6) when the mobile carrier (2) is placed in any mounting slot (5).

2. The switchable multi-band tag according to claim 1, characterized in that: The antenna (4) is placed inside the tag body (1), and the top surface of the tag body (1) has a recessed mounting groove (5). The connection end of the antenna (4) is located at the bottom of the corresponding mounting groove (5).

3. The switchable multi-band tag according to claim 2, characterized in that: The chip (3) is embedded on the bottom surface of the mobile carrier (2). When the lower end of the mobile carrier (2) is inserted into the corresponding mounting slot (5), the chip (3) is electrically connected to the connection end of the antenna (4) corresponding to the mounting slot (5).

4. The switchable multi-band tag according to claim 3, characterized in that: The bottom surface of the mobile carrier (2) has a chip slot (2.1), and the chip (3) is embedded in the chip slot (2.1).

5. The switchable multi-band tag according to any one of claims 1-4, characterized in that: The tag body (1) has a reference point, and the multiple antennas (4) are arranged sequentially along the circumference of the reference point.

6. The switchable multi-band tag according to claim 5, characterized in that: The label body (1) is provided with a swing arm (7). One end of the swing arm (7) is rotated and engaged with the position of the reference point on the label body (1). The movable carrier (2) is set on the other end of the swing arm (7). The swing arm (7) drives the movable carrier (2) to rotate so that the movable carrier (2) can rotate to any mounting slot (5).

7. The switchable multi-band tag according to claim 6, characterized in that: The end of the swing arm (7) is connected to the label body (1) via a connecting seat, which is configured to allow the swing arm (7) to rotate circumferentially along the connecting seat and to rise and fall axially along the connecting seat.

8. The switchable multi-band tag according to claim 7, characterized in that: The tag body (1) includes an upper shell (1.1) and a lower shell (1.2). The upper shell (1.1) and the lower shell (1.2) together form a space for accommodating the antenna (4). The top surface of the upper shell (1.1) is recessed to form an installation groove (5).

9. The switchable multi-band tag according to claim 8, characterized in that: The connecting seat includes a rotating shaft (8) and a spring (9). The upper shell (1.1) of the label body (1) is recessed along the position of the reference point to form a shaft hole (11). The upper end of the rotating shaft (8) is fixed to the swing arm (7), and the lower end extends into the shaft hole and extends radially outward to form a flange (10). The spring (9) is sleeved on the outside of the rotating shaft (8). The lower end of the spring (9) abuts against the flange (10), and the upper end abuts against the stepped surface (11.1) at the opening of the shaft hole (11).

10. The switchable multi-band tag according to claim 6, characterized in that: The movable carrier (2) is movably connected to the swing arm (7) so that the movable carrier (2) has a connected state that descends into the mounting slot (5) and a reset state that disengages from the mounting slot (5).

Images