CN110580083A

CN110580083A - Wearable device

Info

Publication number: CN110580083A
Application number: CN201910694440.4A
Authority: CN
Inventors: 蒋权
Original assignee: Nubia Technology Co Ltd
Current assignee: Nubia Technology Co Ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2019-12-17

Abstract

The application relates to intelligent wearing and provides wearable equipment, which comprises a main body, wherein an audio device is arranged in the main body, the audio device comprises a first audio circuit and a first sensor, and the first sensor is connected with the first audio circuit; the wearable device further comprises a charging seat, wherein the charging seat comprises a second audio element and a second induction part; when the charging seat is connected with the main body, the first sensor and the second sensing part sense, so that the first audio circuit and the second audio element are communicated to realize sound output. Realize the audio transmission with the mutual scheme of wearable equipment main part collocation charging seat, the volume of charging seat does not receive the volume restriction of wearable equipment main part, can arrange the loudspeaker of great volume, brings better audio output quality, has promoted user experience.

Description

Wearable device

Technical Field

The embodiment of the application relates to intelligence wearing technical field, especially relates to wearable equipment.

Background

at present, wearable equipment such as smart mobile phones, smart watches, smart bracelets and the like are more and more enjoyed and accepted by people. But because wearable equipment spatial structure restriction can not place a large volume loudspeaker go up, and use ordinary small volume loudspeaker, lead to wearable equipment audio output quality relatively poor, user experience is not good.

Disclosure of Invention

In view of this, an object of the embodiments of the present application is to provide a wearable device, so as to solve a technical problem that an existing wearable device adopts a small-sized speaker, which results in poor audio output quality of the wearable device.

The technical scheme adopted by the embodiment of the application for solving the technical problems is as follows:

according to an aspect of an embodiment of the present application, there is provided a wearable apparatus including a body, an audio device disposed in the body, the audio device including a first audio circuit and a first sensor, the first sensor being connected to the first audio circuit;

The wearable device further comprises a charging seat, wherein the charging seat comprises a second audio element and a second induction part;

When the charging seat is connected with the main body, the first sensor and the second sensing part sense, so that the first audio circuit and the second audio element are communicated to realize sound output.

In one embodiment, after the first audio circuit and the second audio element are connected, the audio device obtains the maximum output power matched with the charging seat and the audio device, and sets the parameters of the audio device according to the matched maximum output power.

In one embodiment, the first sensor is a magnetic sensor, and the second sensing portion is a magnetic device;

When the charging seat is connected with the main body, the position relation of the magnetic sensor and the magnetic device is up-down corresponding relation.

In one embodiment, the first sensor is a hall switch, and the second sensing part is a magnet block;

when the charging seat is connected with the main body, the magnet block is positioned right below the Hall switch.

In one embodiment, the first audio circuit comprises a codec module, an N-channel field effect transistor, and a loud-speaker audio amplifier module, the codec module comprising a GPIO pin and a DET pin, the DET pin being connected to the first sensor, the GPIO pin being connected to an enable pin EN of the N-channel field effect transistor and the loud-speaker audio amplifier module, respectively, through a first resistor.

In one embodiment, the second audio component comprises a speaker and the loudspeaker audio amplifier module comprises a VOP pin and a VON pin connected to the speaker.

In one embodiment, the acquiring, by the audio apparatus, the maximum output power matched with the charging cradle and the audio apparatus specifically includes:

The public address audio amplifier module measures the current impedance of a loudspeaker connected with the public address audio amplifier module, and obtains the maximum output power matched with the current impedance.

In one embodiment, the maximum output power matched with the charging stand and the audio device is found by searching a preset impedance and PA output power comparison table.

In one embodiment, the preset impedance and PA output power comparison table segments the speaker impedance Rt, and different segments correspond to different PA output powers.

In one embodiment, the connection between the charging base and the main body is any one or more of a plug-in connection, a snap-in connection, or a magnetic attraction. .

The wearable equipment comprises a main body, wherein an audio device is arranged in the main body, the audio device comprises a first audio circuit and a first sensor, and the first sensor is connected with the first audio circuit; the wearable device further comprises a charging seat, wherein the charging seat comprises a second audio element and a second induction part; when the charging seat is connected with the main body, the first sensor and the second sensing part sense, so that the first audio circuit and the second audio element are communicated to realize sound output. Realize the audio transmission with the mutual scheme of wearable equipment main part collocation charging seat, the volume of charging seat does not receive the volume restriction of wearable equipment main part, can arrange the loudspeaker of great volume, brings better audio output quality, has promoted user experience.

Drawings

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

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

fig. 1 is a schematic hardware structure diagram of an implementation manner of a wearable device according to an embodiment of the present invention;

Fig. 2 is a hardware schematic diagram of an implementation of a wearable device provided in an embodiment of the present application;

fig. 3 is a hardware schematic diagram of an implementation of a wearable device provided in an embodiment of the present application;

Fig. 4 is a hardware schematic diagram of an implementation of a wearable device provided in an embodiment of the present application;

Fig. 5 is a hardware schematic diagram of an implementation manner of a wearable device provided in an embodiment of the present application;

fig. 6 is a block diagram illustrating a structure of one embodiment of a wearable device according to an embodiment of the present disclosure;

fig. 7 is a schematic circuit structure diagram of an implementation manner of a wearable device provided in an embodiment of the present application;

Fig. 8 is a schematic circuit structure diagram of an implementation manner of a wearable device provided in an embodiment of the present application;

Fig. 9 is a schematic circuit structure diagram of an implementation manner of a wearable device according to an embodiment of the present application.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.

the wearable device provided by the embodiment of the invention comprises a mobile terminal such as an intelligent bracelet, an intelligent watch, an intelligent mobile phone and the like. With the continuous development of screen technologies, screen forms such as flexible screens and folding screens appear, and mobile terminals such as smart phones can also be used as wearable devices. The wearable device provided in the embodiment of the present invention may include: a Radio Frequency (RF) unit, a WiFi module, an audio output unit, an a/V (audio/video) input unit, a sensor, a display unit, a user input unit, an interface unit, a memory, a processor, and a power supply.

In the following description, a wearable device will be taken as an example, please refer to fig. 1, which is a schematic diagram of a hardware structure of a wearable device for implementing various embodiments of the present invention, where the wearable device 100 may include: RF (radio frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the wearable device structure shown in fig. 1 does not constitute a limitation of the wearable device, and that the wearable device may include more or fewer components than shown, or combine certain components, or a different arrangement of components.

the following describes the various components of the wearable device in detail with reference to fig. 1:

the rf unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, the rf unit 101 may transmit uplink information to a base station, in addition, the downlink information sent by the base station may be received and then sent to the processor 110 of the wearable device for processing, the downlink information sent by the base station to the radio frequency unit 101 may be generated according to the uplink information sent by the radio frequency unit 101, or may be actively pushed to the radio frequency unit 101 after detecting that the information of the wearable device is updated, for example, after detecting that the geographic location where the wearable device is located changes, the base station may send a message notification of the change in the geographic location to the radio frequency unit 101 of the wearable device, and after receiving the message notification, the message notification may be sent to the processor 110 of the wearable device for processing, and the processor 110 of the wearable device may control the message notification to be displayed on the display panel 1061 of the wearable device; typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 may also communicate with a network and other devices through wireless communication, which may specifically include: the server may push a message notification of resource update to the wearable device through wireless communication to remind a user of updating the application program if the file resource corresponding to the application program in the server is updated after the wearable device finishes downloading the application program. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access2000 ), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex Long Term Evolution), and TDD-LTE (Time Division duplex Long Term Evolution).

In one embodiment, the wearable device 100 may access an existing communication network by inserting a SIM card.

in another embodiment, the wearable device 100 may be configured with an esim card (Embedded-SIM) to access an existing communication network, and by using the esim card, the internal space of the wearable device may be saved, and the thickness may be reduced.

it is understood that although fig. 1 shows the radio frequency unit 101, it is understood that the radio frequency unit 101 does not belong to the essential constituents of the wearable device, and can be omitted entirely as required within the scope not changing the essence of the invention. The wearable device 100 may implement a communication connection with other devices or a communication network through the wifi module 102 alone, which is not limited by the embodiments of the present invention.

WiFi belongs to short-distance wireless transmission technology, and the wearable device can help a user to send and receive e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband Internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the wearable device, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the wearable device 100 is in a call signal reception mode, a talk mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the wearable device 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.

in one embodiment, the wearable device 100 includes one or more cameras, and by turning on the cameras, capturing of images can be realized, functions such as photographing and recording can be realized, and the positions of the cameras can be set as required.

The wearable device 100 also includes at least one sensor 105, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or the backlight when the wearable device 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), and the like.

In one embodiment, the wearable device 100 further comprises a proximity sensor, and the wearable device can realize non-contact operation by adopting the proximity sensor, so that more operation modes are provided.

in one embodiment, the wearable device 100 further comprises a heart rate sensor, which, when worn, enables detection of heart rate by proximity to the user.

In one embodiment, the wearable device 100 may further include a fingerprint sensor, and by reading the fingerprint, functions such as security verification can be implemented.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

in one embodiment, the display panel 1061 is a flexible display screen, and when the wearable device using the flexible display screen is worn, the screen can be bent, so that the wearable device is more conformable. Optionally, the flexible display screen may adopt an OLED screen body and a graphene screen body, in other embodiments, the flexible display screen may also be made of other display materials, and this embodiment is not limited thereto.

In one embodiment, the display panel 1061 of the wearable device may take a rectangular shape to wrap around when worn. In other embodiments, other approaches may be taken.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the wearable device. Specifically, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited to these specific examples.

In one embodiment, the side of the wearable device 100 may be provided with one or more buttons. The button can realize various modes such as short-time pressing, long-time pressing, rotation and the like, thereby realizing various operation effects. The number of the buttons can be multiple, and different buttons can be combined for use to realize multiple operation functions.

Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although in fig. 1, the touch panel 1071 and the display panel 1061 are two independent components to implement the input and output functions of the wearable device, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the wearable device, and is not limited herein. For example, when receiving a message notification of an application program through the rf unit 101, the processor 110 may control the message notification to be displayed in a predetermined area of the display panel 1061, where the predetermined area corresponds to a certain area of the touch panel 1071, and perform a touch operation on the certain area of the touch panel 1071 to control the message notification displayed in the corresponding area on the display panel 1061.

The interface unit 108 serves as an interface through which at least one external device is connected to the wearable apparatus 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the wearable apparatus 100 or may be used to transmit data between the wearable apparatus 100 and the external device.

In one embodiment, the interface unit 108 of the wearable device 100 is configured as a contact, and is connected to another corresponding device through the contact to implement functions such as charging and connection. The contact can also be waterproof.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the wearable device, connects various parts of the entire wearable device by various interfaces and lines, and performs various functions of the wearable device and processes data by running or executing software programs and/or modules stored in the memory 109 and calling up data stored in the memory 109, thereby performing overall monitoring of the wearable device. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

the wearable device 100 may further include a power source 111 (such as a battery) for supplying power to various components, and preferably, the power source 111 may be logically connected to the processor 110 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system.

although not shown in fig. 1, the wearable device 100 may further include a bluetooth module or the like, which is not described herein. The wearable device 100 can be connected with other terminal devices through Bluetooth, so that communication and information interaction are realized.

Please refer to fig. 2-4, which are schematic structural diagrams of a wearable device according to an embodiment of the present invention. The wearable device in the embodiment of the invention comprises a flexible screen. When the wearable device is unfolded, the flexible screen is in a strip shape; when the wearable device is in a wearing state, the flexible screen is bent to be annular. Fig. 2 and 3 show the structural schematic diagram of the wearable device screen when the wearable device screen is unfolded, and fig. 4 shows the structural schematic diagram of the wearable device screen when the wearable device screen is bent.

Based on the above embodiments, it can be seen that, if the device is a watch, a bracelet, or a wearable device, the screen of the device may not cover the watchband region of the device, and may also cover the watchband region of the device. Here, the present application proposes an optional implementation manner, in which the device may be a watch, a bracelet, or a wearable device, and the device includes a screen and a connection portion. The screen can be a flexible screen, and the connecting part can be a watchband. Optionally, the screen of the device or the display area of the screen may partially or completely cover the wristband of the device. As shown in fig. 5, fig. 5 is a hardware schematic diagram of an implementation manner of a wearable device provided in an embodiment of the present application, where a screen of the device extends to two sides, and a part of the screen is covered on a watchband of the device. In other embodiments, the screen of the device may also be entirely covered on the watchband of the device, and this is not limited in this application.

First embodiment

As shown in fig. 6, the wearable device 100 includes a main body 10, an audio apparatus 20 disposed in the main body, the audio apparatus 20 including a first audio circuit 30 and a first sensor 40, the first sensor 40 being connected to the first audio circuit 30;

The wearable device 100 further comprises a charging dock 50, wherein the charging dock 50 comprises a second audio element 60 and a second sensing part 70;

when the charging stand 50 is connected to the main body 10, the first sensor 40 and the second sensing part 70 sense each other, so that the first audio circuit 30 and the second audio element 60 communicate with each other to output sound.

Specifically, the connection between the charging stand 50 and the main body 10 may be a plug connection, or a snap connection, or a magnetic paste connection followed by wireless charging, which is not limited in the present application.

The wearable device 100 of the embodiment of the application realizes audio transmission with the wearable device main body 10 and the charging seat 50 in combination, the volume of the charging seat 50 is not limited by the volume of the wearable device main body 10, and the loudspeaker with a large volume can be combined to bring better audio output quality, thereby improving user experience.

In some embodiments, after the first audio circuit 30 and the second audio element 60 are connected, the audio device 20 obtains the maximum output power matched between the cradle 60 and the audio device 20, and then sets the parameters of the audio device 20 according to the matched maximum output power.

Further, the first sensor 40 is a magnetic sensor, and the second sensing part 70 is a magnetic device;

when the charging stand 50 is connected to the main body 10, the magnetic force sensor and the magnetic device are in a corresponding relationship.

Preferably, the first sensor 40 is a hall switch, and the second sensing part 70 is a magnet block;

When the charging seat 50 is connected with the main body 10, the magnet block is located right below the hall switch.

In some embodiments, as shown in fig. 7, the first Audio circuit 30 includes a CODEC module (CODEC) including a GPIO pin and a DET pin, an NMOS transistor Q1 (N-channel field effect transistor), and an Audio PA module (Audio amplifier), the DET pin being connected to the first sensor, the GPIO pin being connected to the enable pins EN of the NMOS transistor and the Audio PA, respectively, through a first resistor R1.

The first sensor 40 of the wearable device 100 is a magnetic sensor whose interrupt pin INT output is high when no magnetic object is approaching and low when a magnetic object is approaching. The charging stand 50 associated with the main body 10 is provided with a second sensing part 70, and the second sensing part 70 is a magnetic device directly below the magnetic sensor.

when the wearable device 100 is powered on, the default output of the GPIO pin of the CODEC module is high level in the default state, the DET pin of the CODEC module outputs high level for internal pull-up, so the grid voltage of the NMOS tube Q1 is also high level, so the NMOS tube is conducted, the enable pin EN of the Audio PA module is conducted by the NMOS tube and then is pulled to low level, and the Audio PA module does not work. A schematic diagram of which is shown in fig. 8.

In some embodiments, the second Audio component 60 comprises a cradle SPK horn, simply a speaker or horn, and the Audio PA module comprises VOP and VON pins connected to the cradle SPK horn.

When the main body 10 of the wearable device 100 contacts the matching charging dock 50, the magnetic sensor of the main body 10 is turned from high level to high level by the magnetic effect of the magnetic device on the charging dock 50, the diode D1 is turned on, the CODEC DET pin is turned on by the diode D1 and then pulled to low level, so the gate voltage of the NMOS transistor Q1 is also turned from high level to low level, so the NMOS transistor Q1 is turned off, the enable pin EN of the Audio PA module is pulled to high level by the GPIO pin of the CODEC module, and the Audio PA module starts to work. A schematic diagram of which is shown in fig. 9.

In some embodiments, the audio device 20 acquiring the maximum output power matched between the charging cradle 50 and the audio device 20 specifically includes:

the Audio PA module measures the current impedance of an SPK loudspeaker connected with the Audio PA module and acquires the maximum output power matched with the current impedance.

Specifically, the maximum output power matched with the charging seat and the audio device is searched by searching a preset impedance and PA output power comparison table.

Furthermore, the horn impedance Rt is segmented in the preset impedance and PA output power comparison table, and different segments correspond to different PA output powers.

for example, the table of the preset impedance and the PA output power is as follows:

Horn impedance	PA output power
		3.6<Rt≤4.4	P0
7.2<Rt≤8.8	P1
		14<Rt≤18	P2
28<Rt≤36	P3
		other impedances	0

wherein P0< P1< P2< P3, and P3 output power is less than the output maximum power.

After the Audio PA module starts working, the Audio PA module of the wearable device 100 measures the impedance of the charging seat SPK speaker connected to the Audio PA module to be Rt, searches the maximum output power of the Audio PA matched with the current impedance by a lookup table method, then sets PA parameters according to the maximum output power of the matched Audio PA, after the setting is completed, the Audio PA starts working normally, and when an Audio event is output, an Audio signal is transmitted to the charging seat SPK speaker to output sound.

In the technical scheme of this application embodiment, main part 10 realizes the Audio transmission scheme with 50 collocation of charging seat, even also can realize output Audio signal in real time under the charging seat 50 does not supply power the condition, Audio PA module corresponds output according to charging seat SPK loudspeaker impedance match simultaneously, protection SPK and Audio PA module promote user experience.

The preferred embodiments of the present application have been described above with reference to the accompanying drawings, and are not intended to limit the scope of the claims of the application accordingly. Any modifications, equivalents and improvements which may occur to those skilled in the art without departing from the scope and spirit of the present application are intended to be within the scope of the claims of the present application.

Claims

1. The wearable device is characterized by comprising a main body, wherein an audio device is arranged in the main body, the audio device comprises a first audio circuit and a first sensor, and the first sensor is connected with the first audio circuit;

2. The wearable device of claim 1, wherein after the first audio circuit and the second audio element are connected, the audio device obtains a maximum output power matched with the charging cradle and the audio device, and sets parameters of the audio device according to the matched maximum output power.

3. The wearable device of claim 2, wherein the first sensor is a magnetic sensor and the second sensing portion is a magnetic device;

4. The wearable device of claim 3, wherein the first sensor is a Hall switch and the second sensing portion is a magnet block;

5. The wearable device of claim 2, wherein the first audio circuit comprises a codec module, an N-channel field effect transistor, and a public address audio amplifier module, the codec module comprising a GPIO pin and a DET pin, the DET pin connected with the first sensor, the GPIO pin connected with an enable pin EN of the N-channel field effect transistor and the public address audio amplifier module, respectively, through a first resistance.

6. The wearable device of claim 5, wherein the second audio element comprises a speaker, and the public address audio amplifier module comprises a VOP pin and a VON pin connected to the speaker.

7. the wearable device of any of claims 2-6, wherein the audio device obtaining the maximum output power matched by the charging cradle and the audio device specifically comprises:

8. The wearable device of claim 7, wherein the maximum output power matched to the charging cradle and the audio device is found by looking up a preset impedance to PA output power comparison table.

9. the wearable device of claim 8, wherein the preset impedance versus PA output power look-up table segments the speaker impedance Rt, different segments corresponding to different PA output powers.

10. The wearable device of claim 9, wherein the charging seat is connected to the main body in any one or more of a plug-in connection, a snap-in connection, or a magnetic attraction.