Wearable device

Abstract

This application provides a wearable device, belonging to the field of electronic technology. The wearable device includes: a main circuit board, a secondary circuit board, and a first GNSS antenna; the main circuit board and the secondary circuit board are stacked and spaced apart; the main circuit board has a feeding circuit, and the secondary circuit board has a grounding circuit; the first GNSS antenna has a feeding point and a grounding point, the feeding point being electrically connected to the feeding circuit, and the grounding point being electrically connected to the grounding circuit. In this wearable device, the first GNSS antenna is arranged between the main circuit board and the secondary circuit board, utilizing both circuit boards for feeding and grounding respectively. The first GNSS antenna does not need to share a frame structure with other antennas, has better clearance conditions, and possesses higher GNSS communication performance, thereby enabling the wearable device to achieve functions such as precise positioning, motion tracking, and navigation.

Description

Technical Field

[0001] This utility model relates to the field of electronic technology, and in particular to a wearable device. Background Technology

[0002] The Global Navigation Satellite System (GNSS) is a technology system that uses satellite signals to provide high-precision positioning, navigation, and timing services to users worldwide.

[0003] In related technologies, wearable devices such as smartwatches and wristbands typically rely on GNSS technology to achieve functions such as accurate positioning, motion tracking, and navigation. However, as wearable devices support more and more wireless frequency bands, the clearance environment for GNSS antennas is getting worse and worse, and antenna efficiency cannot be guaranteed. Utility Model Content

[0004] This invention provides a wearable device that can solve the problem of increasingly poor airspace conditions for GNSS antennas and the inability to guarantee antenna efficiency.

[0005] The technical solution is as follows:

[0006] A wearable device, the wearable device comprising: a main circuit board, a secondary circuit board, and a first GNSS antenna;

[0007] The main circuit board and the sub-circuit board are stacked and spaced apart.

[0008] The main circuit board is equipped with a power supply circuit, and the secondary circuit board is equipped with a grounding circuit;

[0009] The first GNSS antenna has a feed point and a ground point. The feed point is electrically connected to the feed circuit, and the ground point is electrically connected to the ground circuit.

[0010] In this wearable device, the first GNSS antenna is arranged between the main circuit board and the sub-circuit board, and is fed and grounded by the main circuit board and the sub-circuit board respectively. The first GNSS antenna does not need to share the middle frame structure with other antennas. The first GNSS antenna has better clearance conditions and higher GNSS communication performance, thereby enabling the wearable device to achieve functions such as accurate positioning, motion tracking, and navigation.

[0011] In some possible implementations, the first GNSS antenna is any one of an FPC antenna, an LDS antenna, or a steel sheet antenna.

[0012] In some possible implementations, the first GNSS antenna includes a first radiating stub, a first feed stub, and a first grounding stub;

[0013] The first radiating branch is arranged parallel to the main circuit board and the sub-circuit board, and is located on the side of the main circuit board facing the sub-circuit board;

[0014] The first feed branch is connected to one end of the first radiation branch and is arranged perpendicular to the main circuit board and the sub-circuit board, and the feed point is located on the first feed branch;

[0015] The first grounding branch is connected to both ends of the first radiating branch and extends toward the sub-circuit board, with the grounding point located on the first grounding branch.

[0016] With the above arrangement, the first GNSS antenna can transmit and receive GNSS signals using the first radiating branch arranged in parallel between the main circuit board and the sub-circuit board. The first feeding branch extends along the stacking direction to be electrically connected to the feeding circuit on the main circuit board, and the first grounding branch extends along the stacking direction to be electrically connected to the grounding circuit on the sub-circuit board. This achieves both feeding and grounding while making full use of the thickness space of the wearable device and adapting to the product form of the wearable device.

[0017] In some possible implementations, the wearable device further includes a screen, a mid-frame, and a back cover;

[0018] The screen is located on the front of the mid-frame, and the back cover is located on the back of the mid-frame;

[0019] The main circuit board and the sub-circuit board are respectively located within the middle frame, with the main circuit board close to the screen and the sub-circuit board close to the rear cover.

[0020] In this embodiment, the wearable device can use the screen to realize human-computer interaction. The middle frame serves as the main support and together with the screen and back cover, it forms a shell that houses the main circuit board and the secondary circuit board.

[0021] In some possible implementations, the wearable device further includes at least one detection module located on the sub-circuit board;

[0022] The rear shell is provided with at least one detection channel, and the at least one detection channel corresponds to the position of the at least one detection module.

[0023] With the above arrangement, the wearable device can achieve corresponding signal detection using at least one detection unit integrated on the sub-circuit board. The sub-circuit board can provide a grounding connection for the first GNSS antenna and also provide assembly support for the detection unit, realizing structural reuse of the sub-circuit board and achieving a high degree of integration.

[0024] In some possible implementations, the detection module includes at least one of a heart rate detection module, a blood oxygen detection module, a blood glucose detection module, a sleep detection module, a respiratory rate detection module, an electrocardiogram detection module, a pressure detection module, and a temperature detection module.

[0025] In some possible implementations, the mid-frame is a metal mid-frame;

[0026] The wearable device also includes a second GNSS antenna located on the metal frame;

[0027] The first GNSS antenna is used to cover the GNSS L5 band, and the second GNSS antenna is used to cover the GNSS L1 band.

[0028] With the above arrangement, the wearable device can use the first GNSS antenna to cover the GNSS L5 band and the second GNSS antenna to cover the GNSS L1 band, thus meeting the wireless communication requirements of the GNSS band.

[0029] In some possible implementations, the first GNSS antenna is located on the inner side of the rear housing.

[0030] In this embodiment, the first GNSS antenna is arranged on the inner side of the rear shell, which can reduce the difficulty of positioning and stacking the first GNSS antenna.

[0031] In some possible implementations, the first GNSS antenna includes a ring-shaped radiating stub, a second feed stub, and a second grounding stub;

[0032] The annular radial branch is located on the inner side of the rear shell;

[0033] The second feed stub is connected to the outside of the annular radiating stub and extends to the outside of the orthographic projection of the sub-circuit board along the stacking direction. The feed point is located on the second feed stub that protrudes to the outside of the orthographic projection of the sub-circuit board along the stacking direction.

[0034] The second grounding branch is connected to the inside of the annular radiating branch and extends into the interior of the sub-circuit board along the stacking direction, and the grounding point is located on the second grounding branch.

[0035] With the above arrangement, the first GNSS antenna can transmit and receive GNSS signals using the ring radiating stub, and has a large current length to meet the requirements of GNSS signal transmission and reception. The second feed stub is connected to the feed circuit of the main circuit board through the side gap of the sub-circuit board. The second grounding circuit is directly connected to the grounding circuit on the sub-circuit board along the stacking direction. The structure is simple and the feed and grounding connections are convenient.

[0036] In some possible implementations, when the rear shell is provided with at least one detection channel, the annular radiating stubs are arranged around the at least one detection channel.

[0037] In some possible implementations, the wearable device is a smart bracelet or a smartwatch. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is an exploded view of the structure of the wearable device provided in this embodiment of the utility model;

[0040] Figure 2 This is a schematic diagram of the connection structure of the main circuit board, the sub-circuit board, and the first GNSS antenna provided in this embodiment of the utility model;

[0041] Figure 3 This is a schematic diagram showing the relative positions of the main circuit board, the sub-circuit board, and the first GNSS antenna provided in an embodiment of this utility model;

[0042] Figure 4 This is a schematic diagram showing the relative position of the first GNSS antenna provided in this embodiment of the present invention;

[0043] Figure 5 This is a schematic diagram showing the relative positions of the first GNSS antenna and the rear shell provided in this embodiment of the utility model;

[0044] Figure 6 This is a radiation efficiency test diagram of the first GNSS antenna provided in this embodiment of the present invention;

[0045] Figure 7 This is the radiation pattern of the first GNSS antenna provided in this embodiment of the utility model.

[0046] The reference numerals in the figure are respectively:

[0047] 1. Main circuit board;

[0048] 11. Power supply circuit;

[0049] 2. Secondary circuit board;

[0050] 21. Grounding circuit;

[0051] 3. First GNSS antenna;

[0052] 31. Feed point; 32. Grounding point; 33. First radial branch; 34. First feed branch; 35. First grounding branch; 36. Ring radial branch; 37. Second feed branch; 38. Second grounding branch;

[0053] 4. Second GNSS antenna;

[0054] 5. Screen;

[0055] 6. Mid-frame;

[0056] 7. Back cover;

[0057] 71. Detection channel;

[0058] 8. Detection module. Detailed Implementation

[0059] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this invention as detailed in the appended claims.

[0060] In the description of this utility model, it should be understood that 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 appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0061] It should be understood that in this application, "electrical connection" can be understood as physical contact and electrical conduction between components; it can also be understood as a form of connection between different components in a circuit structure through physical lines that can transmit electrical signals, such as copper foil or wires on a printed circuit board (PCB). "Communication connection" can refer to the transmission of electrical signals, including wireless communication connections and wired communication connections. Wireless communication connections do not require a physical medium and are not a connection relationship that limits the product structure. "Connection" and "connected" can both refer to a mechanical or physical connection relationship, that is, A and B being connected or connected can mean that there are fastening components (such as screws, bolts, rivets, etc.) between A and B, or that A and B are in contact with each other and are difficult to separate.

[0062] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art.

[0063] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0064] Combination Figure 1 and Figure 2 As shown, this embodiment provides a wearable device, which includes: a main circuit board 1, a secondary circuit board 2, and a first GNSS antenna 3.

[0065] The main circuit board 1 and the secondary circuit board 2 are stacked and spaced apart; the main circuit board 1 is provided with a feeding circuit 11, and the secondary circuit board 2 is provided with a grounding circuit 21; the first GNSS antenna 3 is provided with a feeding point 31 and a grounding point 32, the feeding point 31 is electrically connected to the feeding circuit 11, and the grounding point 32 is electrically connected to the grounding circuit 21.

[0066] In this embodiment of the wearable device, the first GNSS antenna 3 is arranged between the main circuit board 1 and the sub-circuit board 2. By utilizing the stacked space between the main circuit board 1 and the sub-circuit board 2, the thickness space of the wearable device can be fully utilized, adapting to the product form of the wearable device. Moreover, the first GNSS antenna 3 does not need to share the middle frame structure with other antennas. The first GNSS antenna 3 has better clearance conditions and higher GNSS communication performance, thereby enabling the wearable device to achieve functions such as accurate positioning, motion tracking, and navigation.

[0067] In some possible implementations, the main circuit board 1 and the secondary circuit board 2 are printed circuit boards (PCBs).

[0068] For example, the main circuit board 1 integrates a system on a chip (SoC), memory, power management system (PMIC), wireless communication module, etc., wherein the wireless communication module is electrically connected to the power supply circuit 11 to realize wireless communication of the wearable device.

[0069] It should be noted that, in addition to the first GNSS antenna 3, wearable devices can also integrate Bluetooth antennas, low-frequency antennas, NFC antennas, etc.

[0070] Among some possible implementations, refer to Figure 4 As shown, in the first GNSS antenna 3, the current length between the feed point 31 and the ground point 32 is one-eighth of the wavelength of the target frequency band.

[0071] In some possible implementations, taking a smartwatch or smart bracelet as an example, the power supply point 31 is located at the 7 o'clock position on the orthographic projection of the wearable device along the stacking direction.

[0072] In some possible implementations, the first GNSS antenna 3 can be any one of an FPC antenna, an LDS antenna, or a steel sheet antenna. Using any of these types of antennas as the first GNSS antenna 3 can achieve signal transmission and reception in the GNSS band.

[0073] Combination Figure 3 As shown, in some possible implementations, the first GNSS antenna 3 includes a first radiating stub 33, a first feeding stub 34, and a first grounding stub 35.

[0074] The first radiating branch 33 is arranged parallel to the main circuit board 1 and the sub-circuit board 2, and is located on the side of the main circuit board 1 facing the sub-circuit board 2.

[0075] The first feed branch 34 is connected to one end of the first radiation branch 33 and is arranged perpendicular to the main circuit board 1 and the sub-circuit board 2. The feed point 31 is located on the first feed branch 34.

[0076] The first grounding branch 35 is connected to the two ends of the first radiating branch 33 and extends toward the sub-circuit board 2, with the grounding point 32 located on the first grounding branch 35.

[0077] With the above arrangement, the first GNSS antenna 3 can transmit and receive GNSS signals using the first radiating branch 33 arranged in parallel between the main circuit board 1 and the sub-circuit board 2. The first feeding branch 34 extends along the stacking direction to be electrically connected to the feeding circuit 11 on the main circuit board 1, and the first grounding branch 35 extends along the stacking direction to be electrically connected to the grounding circuit 21 on the sub-circuit board 2. While achieving feeding and grounding, the thickness space of the wearable device can be fully utilized to adapt to the product form of the wearable device.

[0078] In some possible implementations, the first radiating stub 33, the first feeding stub 34, and the first grounding stub 35 are connected to form an IFA antenna (Inverted-F Antenna), which has the advantages of compact structure and high reliability, and is more suitable for use in small electronic devices such as wearable devices.

[0079] Combination Figure 1 As shown, in some possible implementations, the wearable device also includes a screen 5, a mid-frame 6, and a back cover 7.

[0080] The screen 5 is located on the front of the middle frame 6, and the back cover 7 is located on the back of the middle frame 6; the main circuit board 1 and the sub-circuit board 2 are located inside the middle frame 6, with the main circuit board 1 close to the screen 5 and the sub-circuit board 2 close to the back cover 7.

[0081] In this embodiment, the wearable device can use the screen 5 to realize human-computer interaction. The middle frame 6 serves as the main support and together with the screen 5 and the back shell 7, it forms a shell that houses the main circuit board 1 and the secondary circuit board 2.

[0082] In some possible implementations, screen 5 includes any one of the following: Plasma Display Panel (PDP), Vacuum Fluorescent Display (VFD), Field Emission Display (FED), Light Emitting Diode (LED), Organic Light-Emitting Diode (OLED), Liquid Crystal Display (LCD), Micro-Electro-Mechanical System (DMD), and Electroluminance (EL) display.

[0083] Combination Figure 1As shown, in some possible implementations, the wearable device also includes at least one detection module 8, which is located on the sub-circuit board 2.

[0084] The rear cover 7 is provided with at least one detection channel 71, and the position of the at least one detection channel 71 corresponds to that of at least one detection module 8.

[0085] With the above arrangement, the wearable device can achieve corresponding signal detection using at least one detection unit integrated on the sub-circuit board 2. The sub-circuit board 2 can provide a grounding connection for the first GNSS antenna 3 and also provide assembly support for the detection unit, realizing structural reuse of the sub-circuit board 2 and achieving a high degree of integration.

[0086] In some possible implementations, a transparent cover plate radiates from the detection channel 71 to protect the detection module 8.

[0087] In some possible implementations, the detection module 8 includes at least one of the following: heart rate detection module, blood oxygen detection module, blood glucose detection module, sleep detection module, respiratory rate detection module, electrocardiogram detection module, pressure detection module, and temperature detection module.

[0088] Combination Figure 1 As shown, in some possible implementations, the mid-frame 6 is a metal mid-frame; the wearable device also includes a second GNSS antenna 4 located on the mid-frame 6; the first GNSS antenna 3 is used to cover the GNSS L5 band, and the second GNSS antenna 4 is used to cover the GNSS L1 band.

[0089] With the above arrangement, the wearable device can cover the GNSS L5 band using the first GNSS antenna 3 and the GNSS L1 band using the second GNSS antenna 4, thus meeting the wireless communication requirements of the GNSS band.

[0090] For example, the center frequency of the GNSS L5 signal is 1176.45MHz, which has the following technical advantages:

[0091] Strong anti-interference capability: Compared with some other GNSS frequency bands, L5 signals are 6-7 times more difficult to interfere with, and can still maintain accurate positioning even under active interference and deception.

[0092] High positioning accuracy: The L5 signal has a longer wavelength and is less affected by factors such as the ionosphere during propagation. By using it in conjunction with other frequency band signals such as L1 for dual-frequency positioning, it can effectively eliminate or reduce ionospheric delay errors, resulting in higher positioning accuracy.

[0093] High signal power: The L5 signal has high transmission power, which can better penetrate obstacles. In challenging environments such as deep urban areas and areas shaded by trees, the L5 signal can provide better performance and ensure positioning accuracy compared to some other frequency bands.

[0094] Another example is the GNSS L1 band, which has a center frequency of 1575.42 MHz, and has the following advantages:

[0095] High signal strength: Compared with some other GNSS frequency bands, L1 signals have higher strength, which can better maintain signal stability during transmission, and is conducive to receiving equipment quickly locking the signal and performing positioning calculations.

[0096] Good penetration capability: The signal wavelength of this frequency band is relatively short, which has good penetration capability. It can penetrate obstacles such as clouds and buildings to a certain extent. In complex scenarios such as urban environments and indoor environments, it can still provide positioning signals for receiving devices.

[0097] Easy to acquire: The L1 signal has a relatively low code rate and each code takes a relatively long time, which makes it easier for the receiving device to acquire and track it, quickly determine the presence of the signal and start subsequent processing, and shorten the positioning initialization time.

[0098] Combination Figure 5 As shown, in some possible implementations, the first GNSS antenna 3 is located on the inner side of the rear housing 7.

[0099] In this embodiment, the first GNSS antenna 3 is arranged on the inner side of the rear shell 7, which can reduce the difficulty of positioning and stacking the first GNSS antenna 3.

[0100] Furthermore, when the first GNSS antenna 3 is used to cover the GNSS L5 band, it operates at approximately 1176MHz. The first GNSS antenna 3 is close to the arm, which can stimulate the arm to participate in radiation rather than the arm causing performance loss, thereby improving the radiation performance of the GNSS L5 band.

[0101] In some possible implementations, the first GNSS antenna 3 is an FPC antenna, which is bonded to the inner side of the rear housing 7 using an adhesive bonding process. In other possible implementations, the first GNSS antenna 3 is an LDS antenna, which is directly molded onto the inner side of the rear housing 7 using an LDS process.

[0102] Combination Figure 5As shown, in some possible implementations, the first GNSS antenna 3 includes a ring-shaped radiating stub 36, a second feed stub 37, and a second grounding stub 38; the ring-shaped radiating stub 36 is located on the inner side of the rear housing 7. The second feed stub 37 is connected to the outer side of the ring-shaped radiating stub 36 and extends to the outside of the orthographic projection of the sub-circuit board 2 along the stacking direction, and the feed point 31 is located on the second feed stub 37 protruding to the outside of the orthographic projection of the sub-circuit board 2 along the stacking direction.

[0103] The second grounding branch 38 is connected to the inner side of the annular radiating branch 36 and extends to the interior of the sub-circuit board 2 along the stacking direction. The grounding point 32 is located on the second grounding branch 38.

[0104] With the above arrangement, the first GNSS antenna 3 can transmit and receive GNSS signals using the ring radiating stub 36, which has a large current length to meet the requirements of GNSS signal transmission and reception. The second feed stub 37 is connected to the feed circuit 11 of the main circuit board 1 through the side gap of the sub-circuit board 2. The second grounding circuit 21 is directly connected to the grounding circuit 21 on the sub-circuit board 2 along the stacking direction. The structure is simple and the feed and grounding connections are convenient.

[0105] Combination Figure 5 As shown, in some possible implementations, when the rear shell 7 is provided with at least one detection channel 71, the annular radiating branch 36 is arranged around the at least one detection channel 71.

[0106] In this embodiment, by making full use of the inner surface space of the rear shell 7, the annular radiating branches 36 are arranged around the detection channel 71, which can obtain a larger arrangement space and meet the requirements of GNSS signal transmission and reception.

[0107] In some possible implementations, the wearable device is a smart bracelet or a smartwatch.

[0108] Figure 6 This is a radiation efficiency test chart of the first GNSS antenna provided in this embodiment. Figure 7 This is the radiation pattern of the first GNSS antenna provided in this embodiment. It can be seen that the efficiency of the first GNSS antenna in the L5 band can reach -13dB, which is about 5dB higher than that of related technologies.

[0109] It should be noted that, in the description of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0110] 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. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0111] In the description of this specification, the references to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the embodiments or examples that are included in at least one embodiment or example of this application.

[0112] The above description is merely an embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. A wearable device, characterized in that, The wearable device includes: a main circuit board (1), a secondary circuit board (2), and a first GNSS antenna (3); The main circuit board (1) and the sub-circuit board (2) are stacked and spaced apart; The main circuit board (1) is provided with a power supply circuit (11), and the secondary circuit board (2) is provided with a grounding circuit (21). The first GNSS antenna (3) is provided with a feed point (31) and a ground point (32). The feed point (31) is electrically connected to the feed circuit (11), and the ground point (32) is electrically connected to the ground circuit (21).

2. The wearable device according to claim 1, characterized in that, The first GNSS antenna (3) is any one of an FPC antenna, an LDS antenna, or a steel sheet antenna.

3. The wearable device according to claim 1, characterized in that, The first GNSS antenna (3) includes a first radiating stub (33), a first feeding stub (34), and a first grounding stub (35); The first radiating branch (33) is arranged parallel to the main circuit board (1) and the sub-circuit board (2), and is located on the side of the main circuit board (1) facing the sub-circuit board (2); The first feed branch (34) is connected to one end of the first radiation branch (33) and is arranged perpendicular to the main circuit board (1) and the sub-circuit board (2). The feed point (31) is located on the first feed branch (34). The first grounding branch (35) is connected to both ends of the first radiating branch (33) and extends toward the sub-circuit board (2), with the grounding point (32) located on the first grounding branch (35).

4. The wearable device according to claim 1, characterized in that, The wearable device also includes a screen (5), a mid-frame (6), and a back cover (7); The screen (5) is located on the front of the middle frame (6), and the back cover (7) is located on the back of the middle frame (6); The main circuit board (1) and the sub-circuit board (2) are located within the middle frame (6), with the main circuit board (1) close to the screen (5) and the sub-circuit board (2) close to the back cover (7).

5. The wearable device according to claim 4, characterized in that, The wearable device further includes at least one detection module (8), which is located on the sub-circuit board (2); The rear shell (7) is provided with at least one detection channel (71), and the at least one detection channel (71) corresponds to the position of the at least one detection module (8).

6. The wearable device according to claim 5, characterized in that, The detection module (8) includes at least one of the following: heart rate detection module, blood oxygen detection module, blood glucose detection module, sleep detection module, respiratory rate detection module, electrocardiogram detection module, pressure detection module, and temperature detection module.

7. The wearable device according to any one of claims 4 to 6, characterized in that, The middle frame (6) is a metal middle frame; The wearable device also includes a second GNSS antenna (4) located on the metal frame; The first GNSS antenna (3) is used to cover the GNSSL5 band, and the second GNSS antenna (4) is used to cover the GNSSL1 band.

8. The wearable device according to any one of claims 4 to 6, characterized in that, The first GNSS antenna (3) is located on the inner side of the rear shell (7).

9. The wearable device according to claim 8, characterized in that, The first GNSS antenna (3) includes a ring radiating stub (36), a second feed stub (37), and a second grounding stub (38); The annular radial branch (36) is located on the inner side of the rear shell (7); The second feed branch (37) is connected to the outside of the annular radiating branch (36) and extends to the outside of the orthographic projection of the sub-circuit board (2) along the stacking direction. The feed point (31) is located on the second feed branch (37) that protrudes to the outside of the orthographic projection of the sub-circuit board (2) along the stacking direction. The second grounding branch (38) is connected to the inside of the annular radiating branch (36) and extends into the interior of the sub-circuit board (2) along the stacking direction, and the grounding point (32) is located on the second grounding branch (38).

10. The wearable device according to claim 9, characterized in that, When at least one detection channel (71) is provided on the rear shell (7), the annular radiating branch (36) is arranged around the at least one detection channel (71).

11. The wearable device according to claim 7, characterized in that, The wearable device is a smart bracelet or a smartwatch.

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