Wearable device and control method thereof

Abstract

The embodiment of the invention provides a wearable device and a control method thereof, the wearable device comprises a metal bottom cover, a metal frame, a mainboard and a feed structure, the metal frame is arranged on one side of the metal bottom cover and defines an accommodating space, the mainboard is arranged in the accommodating space, the feed structure comprises a first feed source and a second feed source, the first feed source is connected with the metal bottom cover, and the second feed source is connected with the metal bottom cover. The second feed source is connected with the metal frame, the metal bottom cover radiates polarized waves perpendicular to the plane of the metal bottom cover at the preset resonant frequency, and the metal frame radiates polarized waves parallel to the plane of the metal bottom cover at the preset resonant frequency. According to the technology of the application, at least part of the metal bottom cover and at least part of the metal frame are respectively used as two radiators, namely, the metal bottom cover and the metal frame are respectively and independently used as antennas, so that signal emission and receiving are realized, and the metal bottom cover and the metal frame can radiate polarized waves at a predetermined resonant frequency; the antenna efficiency of the embodiment of the invention is improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a wearable device and a control method thereof. Background Art

[0002] In the related art, in the scheme where the frame of a wearable device (such as a smart watch, a smart bracelet, etc.) is used as a radiator, the frame needs to be set as a first part and a second part respectively, and a circularly polarized wave is formed by orthogonal polarization directions of the first part and the second part. However, this scheme causes the structural strength of the wearable device to decrease, and a gap needs to be reserved between the first part and the second part, resulting in a further decrease in the space in the wearable device. Summary of the Invention

[0003] The embodiments of the present application provide a wearable device and a control method thereof to solve or alleviate one or more technical problems in the prior art.

[0004] As one aspect of an embodiment of the present application, an embodiment of the present application provides a wearable device, including:

[0005] Metal bottom cover;

[0006] A metal frame is provided on one side of the metal bottom cover and defines a receiving space;

[0007] A mainboard is arranged in the receiving space;

[0008] The feeding structure includes a first polarization source and a second polarization source, wherein the first polarization source is connected to the metal bottom cover, and the second polarization source is connected to the metal frame, wherein the metal bottom cover radiates polarized waves perpendicular to the plane of the metal bottom cover at a predetermined resonant frequency, and the metal frame radiates polarized waves parallel to the plane of the metal bottom cover at the predetermined resonant frequency.

[0009] In some embodiments, the first collapse source is disposed between the mainboard and the metal bottom cover, the plane where the mainboard is located is parallel to the plane where the metal bottom cover is located, and the second collapse source is disposed between the mainboard and the metal frame.

[0010] In some embodiments, a grounding member is further included. The grounding member is arranged between the metal frame and the mainboard and spaced apart from the second source of damage. One end of the grounding member is electrically connected to the metal frame, and the other end of the grounding member is electrically connected to the mainboard.

[0011] In some embodiments, the circuit further includes a phase shifter, a combiner, and a positioning circuit; the combiner is electrically connected to the first and second surge sources, respectively, and a phase shifter is provided on the line connecting the first and / or second surge sources to the combiner; the combiner is electrically connected to the positioning circuit;

[0012] Among them, the phase shifter is used to adjust the phase of the signal of the first crash source and / or the second crash source, thereby adjusting the phase difference of the signal between the first crash source and the second crash source; the combiner is used to combine the signals of the first crash source and the second crash source and output them to the positioning circuit.

[0013] In some embodiments, it further includes:

[0014] Sensors for detecting motion gestures of wearable devices;

[0015] The control module is electrically connected to the sensor and the phase shifter respectively, and is used to control the phase shifter to adjust the phase of the signal of the first crash source and / or the second crash source according to the motion posture, thereby adjusting the phase difference of the signal between the first crash source and the second crash source.

[0016] In some embodiments, the motion posture includes the wearable device being in an upward swing posture, a downward swing posture, and a horizontal posture;

[0017] When the wearable device is in an upward swing posture or a downward swing posture, the control module controls the phase shifter to adjust the phase of the signal of the first surge source and / or the second surge source, thereby adjusting the phase difference between the signal of the first surge source and the second surge source to 90 degrees;

[0018] When the wearable device is in a horizontal posture, the control module controls the phase shifter to adjust the phase of the signal of the first crash source and / or the second crash source, thereby adjusting the phase difference of the signal between the first crash source and the second crash source to 180°.

[0019] In some embodiments, a first matching circuit and a second matching circuit are further included; one end of the first matching circuit is electrically connected to the first voltage source, and the other end is electrically connected to the combiner; one end of the second matching circuit is electrically connected to the second voltage source, and the other end is electrically connected to the combiner.

[0020] In some embodiments, the metal frame is a bent structure.

[0021] In some embodiments, the bending structure includes one of the following shapes: a circular ring, an elliptical ring, a four-metal frame shape, and a multi-metal frame shape.

[0022] As another aspect of the embodiments of the present application, a control method for a wearable device is further provided, for controlling the wearable device according to any of the above embodiments, comprising:

[0023] Obtain the motion posture of wearable devices in real time;

[0024] Adjusting the phase difference between the first and second collapse sources to corresponding parameter values ​​according to different motion postures;

[0025] The wearable device generates corresponding antenna directions based on parameter values ​​of different phase differences, wherein the antenna directions fluctuate between 0° and 90° based on different motion postures of the wearable device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0027] Figure 1 A schematic diagram showing a wearable device according to an embodiment of the present application being worn on a hand;

[0028] Figure 2 A schematic structural diagram of a wearable device according to an embodiment of the present application is shown;

[0029] Figure 3 A cross-sectional view of a wearable device according to an embodiment of the present application is shown;

[0030] Figure 4 A schematic structural diagram of a wearable device according to an embodiment of the present application is shown;

[0031] Figure 5 A schematic diagram showing the connection relationship between the first surge source, the second surge source, the combiner, and the positioning circuit according to the first embodiment of the present application is shown;

[0032] Figure 6 A schematic diagram showing the connection relationship between the first surge source, the second surge source, the combiner, and the positioning circuit according to the second embodiment of the present application is shown;

[0033] Figure 7 A schematic diagram showing the connection relationship between the first surge source, the second surge source, the combiner, and the positioning circuit according to the third embodiment of the present application is shown;

[0034] Figure 8 A spatial simulation diagram showing the antenna gain of a wearable device according to an embodiment of the present application;

[0035] Figure 9 A spatial simulation diagram showing the antenna gain of a wearable device according to an embodiment of the present application;

[0036] Figure 10 A control method for a wearable device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0037] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0038] The wearable device solution in this application will be described in detail below in combination with the satellite positioning principle and the basic structure of the wearable device.

[0039] When achieving position positioning through satellite signals, a receiver is generally required. According to the principle of position positioning, the receiver generally includes an antenna unit, a receiving unit, and a processing unit. The antenna unit receives the satellite signals it tracks, for example, supporting the reception of one or more satellite signals from the United States' Global Positioning System (GPS), Russia's Global Navigation Satellite System (GLONASS), China's Beidou positioning system, Europe's Galileo system, Japan's Quasi-Zenith Satellite System (QZSS), and India's regional navigation positioning system. The receiving unit can demodulate satellite orbit parameters and other data based on the pseudo-range and the rate of change of the distance from the receiving antenna to the satellite. Based on this data, the processing unit calculates the propagation time of the satellite signal to obtain the distance between the geographic location to be located (e.g., the geographic location of the wearable device) and the satellite. When the antenna unit simultaneously receives satellite signals from multiple satellites, the processor uses a triangulation positioning algorithm to calculate the latitude and longitude, altitude, speed, time, and other information of the geographic location to be located (e.g., the geographic location of the wearable device).

[0040] Wearable devices are integrated with positioning functions or positioning services. Wearable devices can monitor the exercise distance and movement trajectory of human users through location positioning. Without the human user carrying a mobile terminal (such as a smartphone), the wearable device can record the trajectory of the current exercise scene. By pairing with the mobile terminal, the user can also view exercise data such as exercise distance, movement trajectory, exercise steps, calorie consumption, heart rate, etc. through software on the mobile terminal.

[0041] Wearable devices can be smart watches, smart bracelets, smart glasses, etc., or other electronic devices that can provide positioning functions or positioning services and can be carried by human users by wearing or other wearing methods.

[0042] Wearable devices include storage and processing circuitry, which may include memory such as hard drive memory, non-volatile memory (e.g., flash memory or other electrically programmable read-only memory configured to form a solid-state drive), volatile memory (e.g., static random access memory or dynamic random access memory), etc. Processing circuitry within the storage and processing circuitry may be used to control the operation of the wearable device. This processing circuitry may be based on one or more microprocessors, microcontrollers, digital signal processors, application-specific integrated circuits, etc. The storage and processing circuitry may be used to run software on the wearable device, such as internet browsing applications, voice over internet protocol (VOIP) phone calling applications, email applications, media playback applications, operating system functions, etc. To support interaction with external devices, the storage and processing circuitry may be used to implement communication protocols. Communication protocols that may be implemented using the storage and processing circuitry include internet protocols, wireless local area network protocols (e.g., IEEE 802.11 protocols—sometimes referred to as such), protocols for other short-range wireless communication links such as protocols, cellular telephone protocols, multiple-input multiple-output (MIMO) protocols, antenna diversity protocols, etc.

[0043] The wearable device may also include input-output circuitry, which may include input-output devices. The input-output devices may be used to allow data to be provided to the wearable device and to allow data to be provided from the wearable device to an external device. The input-output devices may include user interface devices, data port devices, and other input-output components. For example, the input-output devices may include a touch screen, a display without touch sensor capabilities, buttons, a joystick, a scroll wheel, a trackpad, a keypad, a keyboard, a microphone, a camera, buttons, speakers, status indicators, light sources, audio jacks and other audio port components, digital data port devices, light sensors, motion sensors (accelerometers), capacitive sensors, proximity sensors, fingerprint sensors (e.g., fingerprint sensors integrated with buttons), etc.

[0044] The wearable device may also include wireless communication circuitry for wirelessly communicating with external devices. The wireless communication circuitry may include a radio frequency (RF) transceiver circuit formed by one or more integrated circuits, a power amplifier circuit, a low-noise input amplifier, passive radio frequency (RF) components, one or more antennas, a transmission line, and other circuits for processing RF wireless signals. The RF transceiver circuitry may specifically include at least one of a satellite positioning receiver circuit, a local wireless transceiver circuit (e.g., WiFi, Bluetooth), and a long-range wireless transceiver circuit (e.g., a cellular phone transceiver circuit). Among them, the local wireless transceiver circuit can process 2.4GHz and 5GHz frequency bands for (IEEE 802.11) communication and can process the 2.4GHz communication band; the long-range wireless transceiver circuit can be used to handle wireless communications in a frequency range, such as a low communication band from 700MHz to 960MHz, a low-medium communication band from 1400MHz to 15MHz, a medium communication band from 17MHz to 70MHz, and a high communication band from 20MHz to 2700MHz, or other communication bands between 700MHz and 4000MHz. If necessary, the wireless communication circuit may include circuits for other short-range and long-range wireless links. For example, the wireless communication circuit may include a near field communication (NFC) circuit; the satellite positioning receiver circuit is used to receive and process GPS satellite signals at 1575MHz or satellite signals of other satellite systems (for example, GLONASS satellite signals at 1609MHz).

[0045] The feed structure is the combination of all antenna components used for receiving and transmitting radio frequency waves. In the case of a receiving antenna, the feed structure can be considered the portion of the antenna from the first amplifier to the front-end transmitter. In a transmitting antenna, the feed structure can be considered the section after the final power amplifier. In some cases, the "feed structure" is narrowly understood to mean the RF chip, or the transmission path from the RF chip to the radiator or feed point on the transmission line. The feed structure has the function of converting radio waves into electrical signals and transmitting them to the receiver component. Generally, it is considered the part of the antenna that converts radio waves into electrical signals and vice versa. Antenna design should consider maximum power transfer potential and efficiency. To achieve this, the antenna feed impedance must be matched to the load resistor. The antenna feed impedance is a combination of resistance, capacitance, and inductance. To ensure maximum power transfer, the two impedances (load resistor and feed impedance) must be matched. This matching can be achieved by considering the frequency requirements and antenna design parameters such as gain, directivity, and radiation efficiency.

[0046] Resonant frequency: Also known as the resonant frequency, the resonant frequency refers to the frequency at which the imaginary part of the antenna's input impedance reaches zero. The resonant frequency can have a frequency range, i.e., the frequency range in which resonance occurs. The frequency corresponding to the strongest resonance is the center frequency. The return loss characteristic at the center frequency can be less than 20dB.

[0047] Grounding refers to coupling to the ground / floor in any manner. In one embodiment, grounding can be achieved through physical grounding, such as physical grounding at a specific location on the frame using a portion of the midframe's structural components (or referred to as a physical ground). In one embodiment, grounding can be achieved through device grounding, such as through a series or parallel connection of a capacitor, inductor, or resistor (or referred to as a device ground).

[0048] Considering that the positioning signal sent by the satellite system is usually a right-hand circularly polarized signal after passing through the ionosphere, for wearable devices, the use of a right-hand circularly polarized antenna can effectively suppress the polarization mismatch of the antenna. In addition, since the wearable device will change position as the user moves (for example, swinging the arm), it will also affect the receiving performance of the circularly polarized antenna located thereon for the right-hand circularly polarized signal. For example, for the right-hand circularly polarized antenna, when the user's arm is in a horizontal plane, its receiving performance for the circularly polarized signal is best, and when the user's arm is swung to other positions, its receiving performance for the circularly polarized signal will become weaker. Therefore, in order to make the receiving performance of the circularly polarized antenna as unaffected as possible by the position change of the wearable device, it is necessary to design a wearable device that can adapt to different motion postures.

[0049] Figure 1 A schematic diagram showing a wearable device 10 according to an embodiment of the present application worn on an arm is shown. Figure 2 FIG. 1 shows a schematic structural diagram of a wearable device 10 according to an embodiment of the present application. Figure 3 1 is a cross-sectional view of a wearable device 10 according to an embodiment of the present application. Figure 4 A schematic diagram showing the structure of the wearable device 10 according to an embodiment of the present application is shown. Figures 1 to 4 The present application provides a wearable device 10, wherein the wearable device 10 includes a metal bottom cover 100, a metal frame 200, a mainboard 300, and a feeding structure 400. The metal frame 200 can surround the main body of the wearable device 10 and serve as part of the appearance of the wearable device 10.

[0050] See also Figures 2 to 4The metal frame 200 is disposed on one side of the metal bottom cover 100 and defines a receiving space 210. The mainboard 300 is disposed within the receiving space 210. The feeding structure 400 includes a first oscillator 410 and a second oscillator 420. The first oscillator 410 is connected to the metal bottom cover 100, and the second oscillator 420 is connected to the metal frame 200. The metal bottom cover 100 radiates polarized waves perpendicular to the plane of the metal bottom cover 100 at a predetermined resonant frequency, while the metal frame 200 radiates polarized waves parallel to the plane of the metal bottom cover 100 at a predetermined resonant frequency. When fed simultaneously, the metal frame 200 and the metal bottom cover 100 can be excited to generate antenna radiation in different directions.

[0051] In some embodiments, the wearable device 10 can be a watch or a bracelet. The wearable device includes a screen. The screen and the metal bottom cover 100 are respectively arranged at the top and bottom ends of the metal frame 200, thereby enclosing to form a closed watch or bracelet. The motherboard 300 is arranged between the screen, the metal frame 200 and the metal bottom cover 100.

[0052] It should be noted that the plane where the metal bottom cover 100 is located and the plane where the metal frame 200 is located can be perpendicular, parallel or intersecting, and the metal bottom cover 100 and the metal frame 200 can be annular, polygonal, etc. It can be understood that this application does not limit the shape and positional relationship of the metal bottom cover 100 and the metal frame 200, as long as the polarized waves radiated by the metal bottom cover 100 and the polarized waves radiated by the metal frame 200 are perpendicular to each other.

[0053] The first collapse source 410 can excite and feed the metal bottom cover 100. Under the action of the first collapse source 410, the metal bottom cover 100 can radiate polarized waves perpendicular to the plane of the metal bottom cover 100. The second collapse source 420 can excite and feed the metal frame 200. Under the action of the second collapse source 420, the metal frame 200 can radiate polarized waves parallel to the plane of the metal bottom cover 100. It can be seen that the polarized waves radiated by the metal bottom cover 100 and the polarized waves radiated by the metal frame 200 are perpendicular to each other and can be superimposed and synthesized.

[0054] It is understood that the receiving space 210 is not only used to install the mainboard 300, but can also accommodate a combination of multiple electronic components to realize various functions of the wearable device 10. Exemplarily, the electronic components include batteries, sensors, storage, audio components, lighting modules, etc. The embodiments of the present application do not limit the type of electronic components.

[0055] According to the exemplary description of the embodiment of the present application, at least parts of the metal bottom cover 100 and the metal frame 200 are respectively used as two radiators, that is, the metal bottom cover 100 and the metal frame 200 are respectively independently provided antennas, thereby realizing signal transmission and reception, so that the metal bottom cover 100 and the metal frame 200 of the embodiment of the present application can radiate polarized waves at a predetermined resonant frequency, thereby improving the antenna efficiency of the embodiment of the present application. Secondly, the present application excites and feeds the metal bottom cover 100 through the first collapse source 410. Under the action of the first collapse source 410, the metal bottom cover 100 radiates a polarized wave perpendicular to the plane of the metal bottom cover 100. The second collapse source 420 excites and feeds the metal frame 200. Under the action of the second collapse source 420, the metal frame 200 radiates a polarized wave parallel to the plane of the metal bottom cover 100, thereby setting the polarization directions of the metal bottom cover 100 and the metal frame 200 to be perpendicular, that is, the polarization directions of the two are perpendicular to each other. In this way, the metal bottom cover 100 and the metal frame 200 can be excited to generate circularly polarized radiation, thereby improving the antenna efficiency and thus improving the signal reception performance and signal reception quality of the wearable device 10. Furthermore, compared with the technical solution in the related art that requires the frame to be set as the first part and the second part respectively to form a circularly polarized wave, the present application does not need to split the metal frame 200 to form two radiators, so it can ensure the structural strength of the metal frame 200, thereby ensuring the structural strength of the wearable device 10 and improving the service life of the wearable device 10.

[0056] In the embodiments of the present application, “perpendicular” refers to a state where the angle formed by a straight line, a straight line and a plane, or a plane and a plane is 89° to 91°.

[0057] In some embodiments, see Figures 2 to 4 The first circuit breaker 410 is located between the mainboard 300 and the metal bottom cover 100. It serves as an interface for electrical signal input and output, ensuring that electrical signals can effectively enter or leave the metal bottom cover 100. The plane where the mainboard 300 is located is parallel to the plane where the metal bottom cover 100 is located. The second circuit breaker 420 is located between the mainboard 300 and the metal frame 200.

[0058] In this embodiment, see Figures 2 to 4 The metal bottom cover 100 is disposed at the bottom of the metal frame 200. The metal frame 200 is perpendicular to the plane of the metal bottom cover 100. A first gap is formed between the metal bottom cover 100 and the metal frame 200. The first collapse source 410 is disposed within the first gap. The mainboard 300 and the metal bottom cover 100 are parallel, and a second gap is defined between the mainboard 300 and the metal bottom cover 100. The second collapse source 420 is disposed within the second gap.

[0059] In some examples, the plane on which the motherboard 300 is located is parallel to the plane on which the metal bottom cover 100 is located, so that a mounting space for installing other components is formed between the motherboard 300 and the metal bottom cover 100. It is understood that the motherboard 300 and the metal bottom cover 100 in this application can also be arranged at an angle, and this application does not limit the angle relationship between the metal bottom cover 100 and the metal frame 200, as long as a mounting space for installing other components is formed between the motherboard 300 and the metal bottom cover 100.

[0060] In some embodiments, see Figure 2 The present application also includes a grounding member 500, which is arranged between the metal frame 200 and the main board 300 and spaced apart from the second collapse source 420. One end of the grounding member 500 is electrically connected to the metal frame 200, and the other end of the grounding member 500 is electrically connected to the main board 300, so that the metal frame 200 and the main board 300 are connected to achieve grounding.

[0061] In the embodiment of the present application, the grounding member 500 can effectively guide the noise signal received by the metal frame 200 into the mainboard 300 (reference ground), thereby reducing the interference of noise on the receiving and transmitting signals of the metal frame 200, thereby improving the signal-to-noise ratio and sensitivity of the metal frame 200.

[0062] In some embodiments, see Figure 3 and Figure 4 The first and second collapse sources 410 and 420 are adjacently arranged, and the grounding member 500 is arranged at a position away from the first and second collapse sources 410 and 420 .

[0063] Figure 5 FIG. 1 shows a schematic diagram of the connection relationship between the first surge source 410, the second surge source 420, the combiner 700, and the positioning circuit 800 according to the first embodiment of the present application. Figure 6 FIG. 1 shows a schematic diagram of the connection relationship between the first surge source 410, the second surge source 420, the combiner 700, and the positioning circuit 800 according to the second embodiment of the present application. Figure 7 FIG. 1 shows a schematic diagram of the connection relationship between the first and second voltage sources 410, 420, the combiner 700, and the positioning circuit 800 according to the third embodiment of the present application; in some embodiments, see Figures 5 to 7 The present application further includes a phase shifter 600, a combiner 700, and a positioning circuit 800. The combiner 700 is electrically connected to the first and second surge sources 410, 420, respectively. The phase shifter 600 is provided on the line connecting the first and / or second surge sources 410, 420 to the combiner 700. The combiner 700 is electrically connected to the positioning circuit 800 and is configured to combine the signals of the first and second surge sources 410, 420 into one path and transmit the combined signal to the positioning circuit 800.

[0064] The phase shifter 600 is used to adjust the phase of the signal of the first crash source 410 and / or the second crash source 420 , thereby adjusting the phase difference of the signal between the first crash source 410 and the second crash source 420 .

[0065] Exemplarily, the configuration of the phase shifter 600 includes at least the following implementations:

[0066] See also Figure 5 In the first embodiment, a phase shifter 600 is provided on the line connecting the first surge source 410 and the combiner 700, so as to achieve adjustable phase of the excitation signal of the metal bottom cover 100, and further achieve adjustable phase difference between the excitation signal of the metal bottom cover 100 and the excitation signal of the metal frame 200. For example, the phase of the excitation signal of the metal frame 200 is 0°, and the phase of the excitation signal of the metal bottom cover 100 is adjustable to any one of 0°, 90°, 180°, and 270°.

[0067] See also Figure 6 In the second embodiment, a phase shifter 600 is provided on the line connecting the second surge source 420 and the combiner 700, so as to achieve adjustable phase of the excitation signal of the metal frame 200, and further achieve adjustable phase difference between the excitation signal of the metal bottom cover 100 and the excitation signal of the metal frame 200. For example, the phase of the excitation signal of the metal bottom cover 100 is 0°, and the phase of the excitation signal of the metal frame 200 is adjustable to any one of 0°, 90°, 180°, and 270°.

[0068] See also Figure 7 In the third embodiment, a phase shifter 600 is respectively provided on the line connecting the second surge source 420 and the combiner 700 and the line connecting the first surge source 410 and the combiner 700, so as to achieve adjustable phases of the excitation signals of the metal frame 200 and the metal bottom cover 100, and further achieve adjustable phase difference between the excitation signal of the metal bottom cover 100 and the excitation signal of the metal frame 200. For example, the phase of the excitation signal of the metal bottom cover 100 is adjustable to any one of 0°, 90°, 180°, and 270°, and the phase of the excitation signal of the metal frame 200 is adjustable to any one of 0°, 90°, 180°, and 270°.

[0069] It should be noted that this application does not specifically limit the phase adjustment gradient, for example, 0° to 90°. The above example of the phase adjustment gradient is 90°. In other embodiments, the phase adjustment gradient can also be 15°, 30°, 45°, 60°, etc.

[0070] According to an embodiment of the present application, the phase shifter 600 can change the maximum radiation direction, that is, the phase difference between the excitation signal of the first source 410 and the excitation signal of the second source 420 can be adjusted by controlling the signal, thereby making the maximum radiation direction generated by the wearable device 10 being excited adjustable, that is, the angle between the maximum radiation direction generated by the wearable device 10 being excited and the normal direction of the wearable device 10 is adjustable, so that the wearable device 10 of the present application can adapt to wearable devices 10 with different motion postures, thereby improving the signal quality of the wearable device 10. For example, the phase shifter 600 can be adjusted according to the control signal, so that the phase difference between the excitation signal of the first source 410 and the excitation signal of the second source 420 can be adjusted, thereby making the maximum radiation direction in the synthetic radiation pattern of the wearable device 10 adjustable. The phase difference between the excitation signal of the first source 410 and the excitation signal of the second source 420 can be adjusted according to the movement posture of the wearable device 10, so that the maximum radiation direction of the wearable device 10 is always perpendicular to the ground, thereby enabling the wearable device 10 with different movement postures to maintain good signal reception performance.

[0071] In this embodiment, the combiner 700 can be understood as being used to combine the two RF signals into one and send it to the positioning circuit 800 , that is, the filtered signal of the metal frame 200 and the filtered signal of the metal bottom cover 100 can be aggregated and sent to the positioning circuit 800 .

[0072] In some embodiments, the present application further includes a sensor and a control module. The sensor is used to detect the motion posture of the wearable device 10. The control module is electrically connected to the sensor and the phase shifter 600, respectively. The control module is used to control the phase shifter 600 to adjust the phase of the signal of the first and / or second oscillators 410, 420 according to the motion posture, thereby adjusting the phase difference between the signals of the first and second oscillators 410, 420.

[0073] In some examples, the sensor can be a posture detection sensor, such as a gyroscope, which detects the motion posture of the wearable device 10 when it is worn. The sensor can also be an accelerometer, which detects the acceleration change of the wearable device 10 through the accelerometer to determine the motion state and direction of the wearable device 10. The accelerometer can be used to detect the tilt angle, swing amplitude, and other dynamic motion postures of the wearable device 10. The sensor can also be an optical sensor, which detects the motion and posture of the wearable device 10 through optical methods. The optical sensor can be used for gesture recognition, ambient light detection, etc. It is understandable that the present application does not limit the specific type of sensor, and it only needs to detect the motion posture of the wearable device 10.

[0074] In some embodiments, the motion posture includes the wearable device 10 being in an upward posture, a downward posture, and a horizontal posture.

[0075] It should be noted that the upward, downward, and horizontal postures are defined based on the different pitch relationships of the wearable device 10 relative to the ground. When the top surface of the smartwatch is facing the sky and the plane on which the top surface of the smartwatch is located is parallel to the ground, the smartwatch is in the horizontal posture. The plane on which the top surface of the smartwatch is located when in the horizontal posture is used as the reference plane. When the smartwatch moves away from this reference plane toward the sky and the top surface of the smartwatch is not parallel to the ground, the smartwatch is in the upward posture. When the smartwatch moves away from this reference plane toward the ground and the top surface of the smartwatch is not parallel to the ground, the smartwatch is in the upward posture.

[0076] Figure 8 A spatial simulation diagram showing the antenna gain of the wearable device 10 according to an embodiment of the present application is shown in FIG. Figure 8 When the wearable device 10 is in an upward or downward posture, the control module controls the phase shifter 600 to adjust the phase of the signal of the first crash source 410 and / or the second crash source 420, thereby adjusting the phase difference of the signal between the first crash source 410 and the second crash source 420 to 90°.

[0077] Figure 9 A spatial simulation diagram showing the antenna gain of the wearable device 10 according to an embodiment of the present application is shown in FIG. Figure 9 When the wearable device 10 is in a horizontal posture, the control module controls the phase shifter 600 to adjust the phase of the signal of the first crash source 410 and / or the second crash source 420, thereby adjusting the phase difference of the signal between the first crash source 410 and the second crash source 420 to 180°.

[0078] In the embodiment of the present application, if the wearable device 10 is in an upward or downward swing posture during normal arm swing walking or running, the angle between the maximum radiation direction generated by the wearable device 10 and the normal direction of the wearable device 10 will provide a better user experience. If the wearable device 10 is in a horizontal posture when the wrist is raised to look at the watch, the overlap of the maximum radiation direction generated by the wearable device 10 and the normal direction of the wearable device 10 will provide a better user experience.

[0079] In this way, the sensor detects the upward posture, downward posture or horizontal posture of the wearable device 10 when it is worn, so that the control module can control the phase shifter 600 to adjust the phase of the signal of the first source 410 and / or the second source 420 according to the movement posture of the wearable device 10, and then adjust the angle between the maximum radiation direction generated by the wearable device 10 being excited and the normal direction of the wearable device 10, so that the maximum radiation direction is always perpendicular to the ground and upward regardless of the movement posture of the wearable device 10.

[0080] The following uses the wearable device 10 in an upward and downward posture as examples for explanation:

[0081] In the first embodiment, a phase shifter 600 is provided on the line connecting the first surge source 410 and the combiner 700. The phase of the signal of the first surge source 410 is adjusted by the phase shifter 600, thereby adjusting the phase difference of the signal between the first surge source 410 and the second surge source 420 to 90°, thereby making the maximum radiation direction deviate to the left or right by a predetermined angle relative to the normal direction, and at the same time, the maximum radiation direction is perpendicular to the ground and faces upward.

[0082] In a second embodiment, a phase shifter 600 is provided on the line connecting the second surge source 420 and the combiner 700. The phase of the signal of the second surge source 420 is adjusted by the phase shifter 600, thereby adjusting the phase difference of the signal between the first surge source 410 and the second surge source 420 to 90°, thereby making the maximum radiation direction deviate to the left or right by a predetermined angle relative to the normal direction, and at the same time, the maximum radiation direction is perpendicular to the ground and faces upward.

[0083] In a third embodiment, a phase shifter 600 is provided on the line connecting the second surge source 420 and the combiner 700 and on the line connecting the first surge source 410 and the combiner 700, respectively. The phase of the signal of the first surge source 410 and the second surge source 420 is adjusted by the phase shifter 600, thereby adjusting the phase difference of the signal between the first surge source 410 and the second surge source 420 to 90°, thereby making the maximum radiation direction deviate to the left or right by a predetermined angle relative to the normal direction, and at the same time, the maximum radiation direction is perpendicular to the ground and faces upward.

[0084] When the user of the wearable device 10 is in a motion posture, causing the wearable device 10 to be in an up-and-down swinging motion posture, an angle less than 90° is formed between the normal direction of the wearable device 10 and the ground. At this time, the phase difference between the signals of the first and second crash sources 410 and 420 is adjusted to 90° by the phase shifter 600. There is an angle between the maximum radiation direction of the wearable device 10 and the normal direction of the antenna, that is, the maximum radiation direction of the wearable device 10 is offset from the normal direction of the wearable device 10. With this arrangement, when the wearable device 10 is in an up-and-down swinging motion posture, for example, when the arm wearing the wearable device 10 is swinging, the maximum radiation direction generated by the wearable device 10 being excited can still be perpendicular to the ground and upward.

[0085] The following is an example of the wearable device 10 being in a horizontal position:

[0086] In a first embodiment, a phase shifter 600 is provided on the line connecting the first surge source 410 and the combiner 700. The phase of the signal of the first surge source 410 is adjusted by the phase shifter 600, thereby adjusting the phase difference of the signal between the first surge source 410 and the second surge source 420 to 180°, thereby making the maximum radiation direction overlap with the normal direction and point upward perpendicular to the ground.

[0087] In a second embodiment, a phase shifter 600 is provided on the line connecting the second surge source 420 and the combiner 700. The phase of the signal of the second surge source 420 is adjusted by the phase shifter 600, thereby adjusting the phase difference of the signal between the first surge source 410 and the second surge source 420 to 180°, thereby making the maximum radiation direction overlap with the normal direction, and at the same time, the maximum radiation direction is perpendicular to the ground and upward.

[0088] In a third embodiment, a phase shifter 600 is provided on the line connecting the second surge source 420 and the combiner 700 and on the line connecting the first surge source 410 and the combiner 700, respectively. The phase of the signal of the first surge source 410 and the second surge source 420 is adjusted by the phase shifter 600, thereby adjusting the phase difference of the signal between the first surge source 410 and the second surge source 420 to 180°, thereby making the maximum radiation direction overlap with the normal direction, and at the same time, the maximum radiation direction is perpendicular to the ground and faces upward.

[0089] When the user of the wearable device 10 is in a horizontal posture, that is, when the wearable device 10 is in a horizontal position, the normal direction of the wearable device 10 is perpendicular to the ground. At this time, the phase difference between the signals of the first and second sources 410 and 420 is adjusted to 180° by the phase shifter 600. The maximum radiation direction generated by the wearable device 10 when excited overlaps with the normal direction of the wearable device 10. At the same time, the maximum radiation direction generated by the wearable device 10 when excited is perpendicular to the ground and upward.

[0090] Such a setting makes the maximum radiation direction of the wearable device 10 of the present application change relative to the wearing position coordinate system of the wearable device 10, thereby making the signal range received by the wearable device 10 wider, thereby improving the quality of the signal received by the wearable device 10.

[0091] For example, when the wearable device 10 needs to acquire a navigation satellite signal, the obtained positioning information is more accurate.

[0092] In some embodiments, see Figures 5 to 7 The present application also includes a first matching circuit 900 and a second matching circuit 1000. One end of the first matching circuit 900 is electrically connected to the first oscillator 410, and the other end is electrically connected to the combiner 700. The first matching circuit 900 is used to adjust the input impedance of the metal bottom cover 100 to adjust the transmission load and resonant frequency. One end of the second matching circuit 1000 is electrically connected to the second oscillator 420, and the other end is electrically connected to the combiner 700. The second matching circuit 1000 is used to adjust the input impedance of the metal frame 200 to adjust the transmission load and resonant frequency. The embodiments of the present application do not limit the specific implementation of the first matching circuit 900 and the second matching circuit 1000.

[0093] In some examples, the first matching circuit 900 and the second matching circuit 1000 are circuits composed of inductors or capacitors connected in series or in parallel. For example, the first matching circuit 900 can adjust the impedance of the metal bottom cover 100, and the second matching circuit 1000 can adjust the impedance of the metal frame 200. This allows the impedances of the metal bottom cover 100 and the metal frame 200 to be conjugated in a single-pass state, so that the load impedances of the metal bottom cover 100 and the metal frame 200 can be adapted to each other when they are working simultaneously, and the operating modes of the metal bottom cover 100 and the metal frame 200 can be integrated with each other, thereby effectively increasing the radiation bandwidth of the electromagnetic wave signal and increasing the radiation intensity of the metal bottom cover 100 and the metal frame 200.

[0094] In some embodiments, the metal frame 200 is a bent structure.

[0095] In some embodiments, the metal frame 200 can be in any one of the following shapes: a circular ring, an elliptical ring, a quadrilateral, or a polygonal ring.

[0096] Since wearable devices 10 such as smart watches and smart bracelets are usually designed to be circular or rectangular in industrial design (the four sides of the rectangle may also have arc-shaped chamfers), in order to save the design space of the wearable device 10 and make it more compact in space, in one implementation of the present application, the metal frame 200 is rectangular, the motherboard 300 is rectangular, the motherboard 300 is arranged inside the metal frame 200 and the gap between the motherboard 300 and the metal frame 200 is roughly equal everywhere, and the orthographic projection of the metal frame 200 on the plane where the metal bottom cover 100 is located completely falls into the metal bottom cover 100.

[0097] Exemplarily, the metal frame 200 includes a first arm, a second arm, a third arm, and a fourth arm. The first end of the first arm is bent and connected to the first end of the second arm, the second end of the second arm is bent and connected to the first end of the third arm, the second end of the third arm is bent and connected to the first end of the fourth arm, and the second end of the fourth arm is bent and connected to the second end of the first arm. The mainboard 300 is disposed between the first, second, third, and fourth arms. The metal bottom cover 100 is disposed on one side of the first, second, third, and fourth arms. A first collapse source 410 is disposed between the first arm and the mainboard 300 and adjacent to the bent connection between the first and second arms. A second collapse source 420 is disposed between the mainboard 300 and the metal bottom cover 100 and adjacent to the bent connection between the first and second arms. A grounding member 500 is disposed between the fourth arm and the mainboard 300 and adjacent to the bent connection between the fourth arm and the first arm.

[0098] Figure 10 A control method of the wearable device 10 according to an embodiment of the present application is shown. As another aspect of the embodiment of the present application, see Figure 10 , further provides a control method for a wearable device 10, for controlling the wearable device 10 as in any embodiment. The control method for the wearable device 10 includes:

[0099] S100: Acquire the motion posture of the wearable device 10 in real time.

[0100] S200 , adjusting the phase difference between the first crash source 410 and the second crash source 420 to a corresponding parameter value according to different motion postures.

[0101] S300: The wearable device 10 generates corresponding antenna directions based on parameter values ​​of different phase differences, wherein the antenna directions fluctuate between 0° and 90° based on different motion postures of the wearable device 10.

[0102] In the embodiment of the present application, the antenna direction is the maximum radiation direction, which fluctuates between 0° and 90°, specifically the angle between the maximum radiation direction and the normal direction of the wearable device 10.

[0103] According to the exemplary description of the embodiment of the present application, at least parts of the metal bottom cover 100 and the metal frame 200 are respectively used as two radiators, that is, the metal bottom cover 100 and the metal frame 200 are respectively independently provided antennas, thereby realizing signal transmission and reception, so that the metal bottom cover 100 and the metal frame 200 of the embodiment of the present application can radiate polarized waves at a predetermined resonant frequency, thereby improving the antenna efficiency of the embodiment of the present application. Secondly, the present application excites and feeds the metal bottom cover 100 through the first collapse source 410. Under the action of the first collapse source 410, the metal bottom cover 100 radiates a polarized wave perpendicular to the plane of the metal bottom cover 100. The second collapse source 420 excites and feeds the metal frame 200. Under the action of the second collapse source 420, the metal frame 200 radiates a polarized wave parallel to the plane of the metal bottom cover 100, thereby setting the polarization directions of the metal bottom cover 100 and the metal frame 200 to be perpendicular, that is, the polarization directions of the two are perpendicular to each other. In this way, the metal bottom cover 100 and the metal frame 200 can be excited to generate circularly polarized radiation, thereby improving the antenna efficiency and thus improving the signal reception performance and signal reception quality of the wearable device 10. Furthermore, compared with the technical solution in the related art that requires the frame to be set as the first part and the second part respectively to form a circularly polarized wave, the present application does not need to split the metal frame 200 to form two radiators, so it can ensure the structural strength of the metal frame 200, thereby ensuring the structural strength of the wearable device 10 and improving the service life of the wearable device 10.

[0104] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0105] 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 being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0106] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and 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 application based on specific circumstances.

[0107] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0108] The disclosure above provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0109] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in this application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A wearable device, wherein: include: Metal bottom cover; A metal frame is provided on one side of the metal bottom cover and defines a receiving space; A mainboard is arranged in the receiving space; The feeding structure includes a first polarization source and a second polarization source, wherein the first polarization source is connected to the metal bottom cover, and the second polarization source is connected to the metal frame, wherein the metal bottom cover radiates polarized waves perpendicular to the plane of the metal bottom cover at a predetermined resonant frequency, and the metal frame radiates polarized waves parallel to the plane of the metal bottom cover at the predetermined resonant frequency.

2. The wearable device according to claim 1, wherein: The first collapse source is arranged between the mainboard and the metal bottom cover, the plane where the mainboard is located is parallel to the plane where the metal bottom cover is located, and the second collapse source is arranged between the mainboard and the metal frame.

3. The wearable device according to claim 1, wherein: It also includes a grounding member, which is arranged between the metal frame and the main board and spaced apart from the second source of damage. One end of the grounding member is electrically connected to the metal frame, and the other end of the grounding member is electrically connected to the main board.

4. The wearable device according to claim 1, wherein: The circuit further includes a phase shifter, a combiner, and a positioning circuit; the combiner is electrically connected to the first and second surge sources, respectively; the phase shifter is provided on the line connecting the first and / or second surge sources to the combiner; the combiner is electrically connected to the positioning circuit; Among them, the phase shifter is used to adjust the phase of the signal of the first crash source and / or the second crash source, thereby adjusting the phase difference of the signal between the first crash source and the second crash source; the combiner is used to combine the signals of the first crash source and the second crash source and output them to the positioning circuit.

5. The wearable device according to claim 4, wherein: Also includes: A sensor for detecting a motion gesture of the wearable device; A control module is electrically connected to the sensor and the phase shifter, respectively, and is used to control the phase shifter to adjust the phase of the signal of the first crash source and / or the second crash source according to the motion posture, thereby adjusting the phase difference of the signal between the first crash source and the second crash source.

6. The wearable device according to claim 5, wherein: The motion posture includes the wearable device being in an upward swing posture, a downward swing posture, and a horizontal posture; When the wearable device is in an upward swing posture or a downward swing posture, the control module controls the phase shifter to adjust the phase of the signal of the first and / or second source, so as to adjust the phase difference between the signal of the first and second sources to 90 degrees; When the wearable device is in a horizontal posture, the control module controls the phase shifter to adjust the phase of the signal of the first crash source and / or the second crash source, thereby adjusting the phase difference of the signal between the first crash source and the second crash source to 180°.

7. The wearable device according to claim 4, wherein: It also includes a first matching circuit and a second matching circuit; one end of the first matching circuit is electrically connected to the first voltage source, and the other end is electrically connected to the combiner; one end of the second matching circuit is electrically connected to the second voltage source, and the other end is electrically connected to the combiner.

8. The wearable device according to any one of claims 1 to 7, wherein: The metal frame is a bent structure.

9. The wearable device according to claim 8, wherein: The bending structure includes one of the following shapes: a circular ring, an elliptical ring, a four-metal frame shape, and a multi-metal frame shape.

10. A method for controlling a wearable device, for controlling the wearable device according to any one of claims 1 to 9, comprising: Obtain the motion posture of wearable devices in real time; Adjusting the phase difference between the first and second sources to a corresponding parameter value according to different motion postures; The wearable device generates corresponding antenna directions based on parameter values ​​of different phase differences, wherein the antenna directions fluctuate between 0° and 90° based on different motion postures of the wearable device.

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