Wearable device

Abstract

The utility model discloses a wearable device, wearable device includes main body, first microphone unit, second microphone unit, speaker unit and control unit, and the main body includes frame and with the extension of frame connection, and the extension is along the first direction extension, and first microphone unit is located on the frame and its sound hole sets down, and second microphone unit is located on the extension and its sound hole sets down, and speaker unit is located on the extension, and at least one speaker unit is located in the side of second microphone unit in the first direction away from the frame, and control unit is located on the extension or frame, and control unit is electric connection with first microphone unit, second microphone unit and speaker unit. The utility model discloses a wearable device through the layout of reconstruction microphone unit in the limited space, promotes the positioning accuracy of sound source and restrains specific wind noise and friction sound, and dynamically fuses multi microphone signal, and then improves the recognition rate of voice command.

Description

Technical Field

[0001] This utility model relates to the field of smart device technology, specifically to a wearable device. Background Technology

[0002] The development of AI technology has driven the rapid growth of wearable devices such as AI smart glasses, evolving from basic Bluetooth audio functions to voice recognition, and further to features like photo and video recording and waveguide displays. However, the voice recognition function, a fundamental feature, suffers from poor performance due to the unreasonable microphone layout in these smart glasses, negatively impacting the user experience. Summary of the Invention

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a wearable device that improves the accuracy of sound source localization and suppresses specific wind noise and friction noise by reconstructing the MIC layout within a limited space, and dynamically fuses multiple MIC signals, thereby improving the recognition rate of voice commands.

[0005] The wearable device according to this utility model embodiment includes: a main body, the main body including a frame and an extension connected to the frame, the extension extending along a first direction; a first microphone unit and a second microphone unit, the first microphone unit being disposed on the frame and having its microphone hole facing downwards, the second microphone unit being disposed on the extension and having its microphone hole facing downwards; a speaker unit, the speaker unit being disposed on the extension, at least one of the speaker units being located on the side of the second microphone unit away from the frame in the first direction; and a control unit, the control unit being disposed on the extension or the frame, the control unit being electrically connected to the first microphone unit, the second microphone unit and the speaker unit.

[0006] The wearable device of this utility model embodiment has a first microphone unit on the frame, a second microphone unit and a speaker on the extension, and at least one speaker unit located on the side of the second microphone unit away from the frame in a first direction. The sound holes of the first microphone unit and the second microphone unit are both arranged downwards. Thus, the first microphone unit can receive voice interaction information, and the speaker unit can transmit sound signals to the user. The second microphone unit between the speaker unit and the first microphone unit can isolate speaker echo, while taking into account both frontal and lateral wind noise, so that the user's voice information can be more accurately recognized in noisy environments, thus optimizing the product function. That is, this application improves the sound source localization accuracy and suppresses specific wind noise and friction noise by reconstructing the layout of the microphone units in a limited space, and dynamically fuses multiple microphone signals, thereby improving the recognition rate of voice commands.

[0007] In some embodiments, the extension includes a first extension and a second extension respectively connected to the frame, the first extension and the second extension being arranged at a distance in a second direction orthogonal to the first direction, and the speaker unit and the second microphone unit being disposed on at least one of the first extension and the second extension.

[0008] In some embodiments, the speaker unit includes a first speaker unit and a second speaker unit, the first speaker unit being disposed on the first extension, the second speaker unit being disposed on the second extension, and the second microphone unit being disposed on the first extension.

[0009] In some embodiments, the wearable device further includes a third microphone unit and a fourth microphone unit, the third microphone unit being disposed in the first extension and the fourth microphone unit being disposed in the second extension, the microphone hole of the third microphone unit being disposed in a direction away from the second extension and the microphone hole of the fourth microphone unit being disposed in a direction away from the first extension.

[0010] In some embodiments, the third microphone unit and the fourth microphone unit are arranged opposite to each other in the second direction.

[0011] In some embodiments, the distance a between the second microphone unit and at least one of the speaker units in the first direction satisfies a > 10 mm.

[0012] In some embodiments, the distance b between the second microphone unit and the third microphone unit in the first direction satisfies 5cm < b < 8cm.

[0013] In some embodiments, the wearable device further includes a plurality of battery packs, the battery packs including a first battery pack and a second battery pack, both of which are disposed within the extension.

[0014] In some embodiments, the first battery pack includes a first single cell and a second single cell connected in parallel, the first single cell being disposed at one end of the first extension away from the frame, and the second single cell being disposed at one end of the first extension adjacent to the frame.

[0015] And / or, the second battery includes a third single cell disposed at one end of the second extension away from the frame.

[0016] In some embodiments, the outer surface of the first extension is provided with a touch area, and the inner side of the first extension is provided with a sensor for detecting the wearing status. Both the touch area and the sensor are electrically connected to the control unit.

[0017] In some embodiments, the first extension has a bend, and the speaker unit is located on the side of the bend adjacent to the frame;

[0018] The touch area and the second single-cell battery are arranged in parallel.

[0019] In some embodiments, the frame includes two lens rings arranged at intervals in the arrangement direction of the first extension and the second extension, the two lens rings being connected by a central beam, the first microphone unit being disposed at the central beam, and a charging interface being provided on the central beam, the charging interface being disposed adjacent to the first microphone unit. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of the smart AI glasses according to an embodiment of the present utility model.

[0021] Figure 2 This is a bottom view of the smart AI glasses according to an embodiment of the present utility model.

[0022] Figure 3 This is a side view of the smart AI glasses according to an embodiment of the present invention.

[0023] Figure 4 This is a top view of the smart AI glasses according to an embodiment of the present utility model.

[0024] Figure label:

[0025] Frame 1, central beam 2, second extension 3, first extension 4, button 5, camera element 6, light sensor 7, sensor 8, hinge 9, first speaker unit 10, second speaker unit 11, first microphone unit 12, second microphone unit 13, third microphone unit 14, fourth microphone unit 15, charging port 16. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] like Figures 1-4 As shown, the wearable device of this utility model embodiment includes a main body, a first microphone unit 12, a second microphone unit 13, a speaker unit, and a control unit.

[0028] Specifically, the main body includes a frame 1 and an extension connected to the frame 1. The extension extends along a first direction. A first microphone unit 12 is disposed on the frame 1, and the sound receiving hole of the first microphone unit 12 is arranged downward. A second microphone unit 13 is disposed on the extension, and the sound receiving hole of the second microphone unit 13 is arranged downward. A speaker unit is disposed on the extension, and at least one speaker unit is located on the side of the second microphone unit 13 away from the frame 1 in the first direction. A control unit is disposed on the extension or the frame 1, and the control unit is electrically connected to the first microphone unit 12, the second microphone unit 13 and the speaker unit.

[0029] It should be noted that the wearable device of this application can have various structural forms, one of which is, for example... Figure 1 As shown, the wearable device is a type of smart glasses. The first microphone unit 12 is located on the frame, and the second microphone unit 13 and the speaker unit are located on the temple (extension). The microphone hole of the first microphone unit 12 is set downward so that it is directly facing the mouth, which is convenient for receiving voice interaction information, such as device wake-up information and voice command information, thereby improving recognition accuracy. The microphone hole of the second microphone unit 13 is set downward so that it can attenuate reflected sound and suppress ceiling reflection when it is pointed to the ground. This is a key advantage in meeting scenarios. In addition, this arrangement can ensure that the second microphone unit 13 can take into account both frontal and lateral wind noise and reduce echo.

[0030] In addition, the number of speaker units is not limited to one, such as Figure 1As shown, two speaker units are provided on the extension. One speaker unit is located on the side of the second microphone unit 13 away from the frame 1, and the other speaker unit is located on the other side of the extension, with the two speaker units facing each other. In addition, the side of the second microphone unit 13 away from the frame 1 is not limited to having only one speaker unit; it can be determined according to the requirements, and no limitation is made here.

[0031] The wearable device of this utility model embodiment has a first microphone unit 12 on the frame 1, a second microphone unit 13 and a speaker on the extension, and the speaker unit is located on the side of the second microphone unit 13 away from the frame 1 in a first direction. The sound holes of the first microphone unit 12 and the second microphone unit 13 are both arranged downwards. Thus, the first microphone unit 12 can receive voice interaction information, and the speaker unit can transmit sound signals to the user. The second microphone unit 13 between the speaker unit and the first microphone unit 12 can isolate the speaker echo, while taking into account both frontal and lateral wind noise, so that the user's voice information can be more accurately recognized in noisy environments, thus optimizing the product function. That is, this application improves the sound source localization accuracy and suppresses specific wind noise and friction noise by reconstructing the layout of the microphone units in a limited space, and dynamically fuses multiple microphone signals, thereby improving the recognition rate of voice commands.

[0032] In some embodiments, the extension includes a first extension 4 and a second extension 3 respectively connected to the frame 1. The first extension 4 and the second extension 3 are arranged at a distance in a second direction, which is orthogonal to the first direction. The speaker unit and the second microphone unit 13 are both disposed on at least one of the first extension 4 and the second extension 3. That is, the layout of the second microphone unit 13 and the speaker includes various forms.

[0033] For example, the second microphone unit 13 and the speaker unit can be arranged simultaneously on the first extension 4, while the second extension 3 does not have the second microphone unit 13 and the speaker unit. Alternatively, the second microphone unit 13 and the speaker unit can be arranged simultaneously on both the first extension 4 and the second extension 3.

[0034] Alternatively, a second microphone unit 13 and a speaker unit can be arranged simultaneously on one extension, while only a speaker unit can be arranged on the other extension. Specifically, as shown... Figure 1 , Figure 2 and Figure 4 As shown, the speaker unit includes a first speaker unit 10 and a second speaker unit 11. The first speaker unit 10 is disposed in the first extension 4, the second speaker unit 11 is disposed in the second extension 3, and the second microphone unit 13 is disposed on the first extension 4. Taking smart glasses as an example, as... Figure 1As shown, a second microphone unit 13 and a first speaker unit 10 are provided on the right temple, and a second speaker unit 11 is provided on the left temple. The first speaker unit 10 and the second speaker unit 11 are both located on the front side of the ear hook, and the speaker unit includes a sound vent and a sound outlet. The sound vent is located above the narrow surface of the temple, and the sound outlet is located below the narrow surface of the temple.

[0035] Optionally, both the sound leakage holes and the sound outlet holes are covered with metal mesh, such as steel mesh.

[0036] In some embodiments, the wearable device further includes a third microphone unit 14 and a fourth microphone unit 15. The third microphone unit 14 is disposed in the first extension 4, and the fourth microphone unit 15 is disposed in the second extension 3. The microphone hole of the third microphone unit 14 is disposed in a direction away from the second extension 3, and the microphone hole of the fourth microphone unit 15 is disposed in a direction away from the first extension 4.

[0037] like Figure 1 As shown, the first extension 4 and the second extension 3 are arranged in parallel. The microphone holes of the third microphone unit 14 and the fourth microphone unit 15 are both facing outward. The third microphone unit 14 and the fourth microphone unit 15 are mainly designed to take into account the influence of wind noise. Therefore, they are arranged outward to capture lateral ambient sound and to use noise reference for noise reduction and sound source separation.

[0038] Optionally, the third microphone unit 14 and the fourth microphone unit 15 are arranged opposite to each other in the second direction. Figure 1 As shown, the third microphone unit 14 is located at one end of the first extension 4 near the frame 1, and the fourth microphone unit 15 is located at one end of the second extension 3 near the frame 1. The two microphone units are symmetrical about the frame 1.

[0039] Optionally, all four microphone units are omnidirectional microphones with a sensitivity of -37±1dBFS (94dBSPL@1kHz), SNR (signal-to-noise ratio) ≥65dB, THD ≤0.1% (94dBSPL@1kHz), and AOP (acoustic overload point) ≥130dBSPL.

[0040] In addition, the receiving holes of the first microphone unit 12, the second microphone unit 13, the third microphone unit 14 and the fourth microphone unit 15 all adopt a trapezoidal design with a larger outer diameter and a smaller inner diameter, and the airtightness requirement is >24dB@70~6kHz. At the same time, each microphone unit has an independent structural design to prevent internal leakage and vibration transmission.

[0041] In some embodiments, the distance 'a' between the second microphone unit 13 and at least one speaker unit in the first direction satisfies a > 10 mm. The arrangement of the microphone units needs to consider the effects of echo and wind noise. Since the second microphone unit 13 is relatively close to the speaker, a reasonable spacing needs to be maintained to minimize echo. Specifically, the inventors have discovered that when the distance 'a' between the second microphone unit 13 and the speaker unit in the length direction of the first extension 4 satisfies a > 10 mm, the second microphone unit 13 has a better echo reduction effect.

[0042] Furthermore, considering the accuracy of sound source localization and the effect of noise suppression, the distance between the third microphone unit 14 and the second microphone unit 13 should be as far as possible. Given that the usable spacing between typical temples of glasses is 5-8cm, the distance should ideally be at least 5cm. Too close a distance will cause problems such as directional blurring, spatial aliasing, and noise suppression failure. Specifically, the distance b between the second microphone unit 13 and the third microphone unit 14 in the first direction should satisfy 5cm < b < 8cm.

[0043] In some embodiments, the wearable device further includes multiple battery packs, including a first battery pack and a second battery pack, both of which are disposed within the extension. It is understood that multiple battery packs can provide sufficient battery life for device operation and optimize product functionality.

[0044] Furthermore, the first battery pack includes a first individual battery cell and a second individual battery cell connected in parallel. The first individual battery cell is disposed at the end of the first extension 4 away from the frame 1, and the second individual battery cell is disposed at the end of the first extension 4 adjacent to the frame 1. Figure 1 As shown, the first single-cell battery is located at the tail end of the first extension 4, and the second single-cell battery is located near the front end of the first extension 4. Optionally, the second single-cell battery is a large battery, and the first single-cell battery is a small battery.

[0045] Optionally, the first extension 4 may be provided with only one first battery pack, depending on the battery life requirements.

[0046] Optionally, the second battery includes a third individual cell, which is disposed at the end of the second extension 3 away from the frame 1. Figure 1 As shown, the third single cell is located at the tail end of the second extension 3 and is arranged symmetrically with the first single cell. The third single cell is a small battery.

[0047] Optionally, the second extension 3 may be provided with only one second battery pack, depending on the range requirements.

[0048] Optionally, the layout of the first, second, and third individual cells can be adjusted as needed, and no restrictions are imposed here.

[0049] In some embodiments, the outer surface of the first extension 4 is provided with a touch area, and the inner side of the first extension 4 is provided with a sensor 8 for detecting the wearing status. Both the touch area and the sensor 8 are electrically connected to the control unit. It should be noted that when worn, the user can adjust the speaker volume by touching the touch area. When not worn, the touch area cannot be triggered, thereby preventing accidental touches and saving power. Specifically, after the sensor 8 detects that the user is wearing the device, the control unit receives the detection information from the sensor 8 and controls the touch area to wake up. When the sensor 8 detects that the user is not wearing the device, the control unit controls the touch area to standby mode.

[0050] Optionally, the touch area and the second individual battery cell are arranged in parallel. For example... Figure 1 As shown, the touch area is located on the outside of the first extension 4, and the second single battery cell is opposite to the touch area and located on the inside of the first extension 4.

[0051] In some embodiments, the first extension 4 has a bend, and the speaker unit is located on the side of the bend adjacent to the frame 1. For example... Figure 1 As shown, the bent section is the ear hook, with the speaker positioned adjacent to it to facilitate clearer sound signal reception by the human ear. Optionally, a smart power amplifier is also located on the outside of the bent section, integrating DSP functionality to implement different audio algorithms to achieve various audio effects and enhance the user experience.

[0052] In some embodiments, the frame 1 includes two mirror rings spaced apart in the arrangement direction of the first extension 4 and the second extension 3. The two mirror rings are connected by a central beam 2. A first microphone unit 12 is disposed on the central beam 2, and a charging interface 16 is also provided on the central beam 2, with the charging interface 16 disposed adjacent to the first microphone unit 12. It is understood that placing the first microphone unit 12 on the central beam 2 allows it to be closer to the mouth, which facilitates improving the accuracy of receiving voice commands. Distributing the charging interface 16 on the central beam 2 and adjacent to the first microphone unit 12 facilitates connection with an external charging plug during charging.

[0053] In a specific example, the external charging plug can be integrated into the glasses case. After the smart glasses are placed inside the glasses case, the charging plug can be directly connected to the charging interface 16 set on the central beam 2. The charging interface 16 can be a quick electrical connector, such as a pogopin. The glasses case charges the smart glasses through the pogopin interface and communicates with the smart glasses via PLC through the pogopin interface.

[0054] Furthermore, such as Figure 1As shown, the frame 1 has a camera element 6 on one upper corner of the second direction for capturing images. The camera element 6 is connected to the motherboard via an FPC connector. The other upper corner has an LED light and a light sensor 7. The LED light and the light sensor 7 are connected to the motherboard via an FPC connector. The light sensor 7 can automatically adjust the lens transmittance in a short time by monitoring the ambient light intensity in real time, ensuring the wearer's visual comfort in different scenarios such as strong light and indoor environments.

[0055] In addition, an inner indicator light is arranged on the inner side of the upper corner of at least one side of frame 1 to allow users to obtain the working status of the device.

[0056] Furthermore, the upper surface of the first extension 4 is also provided with a button 5. The button 5 is located above the touch area and has the functions of function selection and confirmation. For example, the button 5 can be used as a control switch for the camera element 6, and can also be used as a confirmation key for the operation of the touch area. For example, when the user adjusts the volume through the touch area, after the adjustment is completed, the user can press the button 5 to confirm the end of the adjustment program.

[0057] Furthermore, both the first extension 4 and the second extension 3 are movably connected to the frame 1 via hinges 9. When not in use, the user can rotate the first extension 4 and the second extension 3 inward to fold them up.

[0058] In some embodiments, the control unit includes a motherboard, which is disposed on the second extension 3 and close to the frame 1. An antenna is provided on the front side of the motherboard, and the antenna is connected to the motherboard through a connector. The glasses support BT5.4 & WiFi6 and support 2.4GHz and 5GHz antennas. The antenna is connected to the motherboard through the radio frequency transceiver of the radio frequency front end to establish a wireless communication link.

[0059] 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", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only 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.

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

[0061] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

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

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

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

Claims

1. A wearable device, characterized in that, include: The main body includes a frame and an extension connected to the frame, the extension extending along a first direction; A first microphone unit and a second microphone unit, wherein the first microphone unit is disposed on the frame and the sound-receiving hole of the first microphone unit is arranged downward, and the second microphone unit is disposed on the extension and the sound-receiving hole of the second microphone unit is arranged downward; A speaker unit, the speaker unit being disposed on the extension, at least one of the speaker units being located on the side of the second microphone unit away from the frame in the first direction; A control unit is disposed on the extension or the frame, and the control unit is electrically connected to the first microphone unit, the second microphone unit and the speaker unit.

2. The wearable device according to claim 1, characterized in that, The extension includes a first extension and a second extension respectively connected to the frame. The first extension and the second extension are arranged at a distance in a second direction, which is orthogonal to the first direction. The speaker unit and the second microphone unit are both disposed on at least one of the first extension and the second extension.

3. The wearable device according to claim 2, characterized in that, The speaker unit includes a first speaker unit and a second speaker unit, the first speaker unit is disposed on the first extension, the second speaker unit is disposed on the second extension, and the second microphone unit is disposed on the first extension.

4. The wearable device according to claim 2 or 3, characterized in that, It also includes a third microphone unit and a fourth microphone unit. The third microphone unit is located in the first extension, and the fourth microphone unit is located in the second extension. The microphone hole of the third microphone unit is oriented away from the second extension, and the microphone hole of the fourth microphone unit is oriented away from the first extension.

5. The wearable device according to claim 4, characterized in that, The third microphone unit and the fourth microphone unit are arranged opposite each other in the second direction.

6. The wearable device according to any one of claims 1-4, characterized in that, The distance 'a' between the second microphone unit and at least one of the speaker units in the first direction satisfies 'a > 10 mm'.

7. The wearable device according to claim 4 or 5, characterized in that, The distance b between the second microphone unit and the third microphone unit in the first direction satisfies 5cm < b < 8cm.

8. The wearable device according to any one of claims 2-5, characterized in that, It also includes multiple battery packs, including a first battery pack and a second battery pack, both of which are disposed within the extension.

9. The wearable device according to claim 8, characterized in that, The first battery pack includes a first single cell and a second single cell connected in parallel. The first single cell is disposed at one end of the first extension away from the frame, and the second single cell is disposed at one end of the first extension adjacent to the frame. And / or, the second battery includes a third single cell disposed at one end of the second extension away from the frame.

10. The wearable device according to claim 9, characterized in that, The outer surface of the first extension is provided with a touch area, and the inner side of the first extension is provided with a sensor for detecting the wearing status. Both the touch area and the sensor are electrically connected to the control unit.

11. The wearable device according to claim 10, characterized in that, The first extension has a bend, and the speaker unit is located on the side of the bend adjacent to the frame; The touch area and the second single-cell battery are arranged in parallel.

12. The wearable device according to any one of claims 2-5, characterized in that, The frame includes two lens rings arranged at intervals in the arrangement direction of the first extension and the second extension. The two lens rings are connected by a central beam. The first microphone unit is located at the central beam, and a charging interface is also provided on the central beam, which is located adjacent to the first microphone unit.

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