Smart wearable device and control method thereof

Abstract

This application discloses a smart wearable device and its control method, relating to the field of smart wearable device technology. The smart wearable device includes a device body and a processor. The device body includes a wearing structure and a driving component. The wearing structure includes a main body and an adjustment part connected to the main body. The driving component is disposed within the main body, and the adjustment part is convexly connected to the driving component. The driving component drives the adjustment part to deform to have an unfolded position that presses against the user's skin and a contracted position that adheres to the user's skin. The processor is disposed within the main body and is used to receive the user's physiological characteristic information. The processor is electrically connected to the driving component. The processor controls the driving component to deform the adjustment part based on the physiological characteristic information. In a first wearing state, the adjustment part is in the unfolded position; in a second wearing state, the adjustment part is in the contracted position. This application can solve the problem that existing wearable devices cannot adequately meet the diverse comfort needs of users in different usage scenarios.

Description

Technical Field

[0001] This application relates to smart wearable devices, and more particularly to a smart wearable device and its control method. Background Technology

[0002] With the rapid development of wearable technology, wearable devices such as smart headphones and smart bracelets have become common electronic products in people's daily lives. These devices typically come into contact with the skin through a wearing structure to achieve functions such as audio playback and health monitoring.

[0003] In practical use, users often need to wear these devices for extended periods, such as during sleep, exercise, or work. However, the wearing structure of existing wearable devices typically employs a relatively fixed design, with the tightness predetermined at the factory or only adjustable to a limited extent manually by the user. This design makes it difficult to cater to the diverse comfort needs of users in different usage scenarios during extended wear. Summary of the Invention

[0004] The main purpose of this application is to propose a smart wearable device and its control method, which aims to solve the problem that the tightness of existing wearable devices is difficult to meet the different needs of users for wearing comfort in different usage scenarios.

[0005] To achieve the above objectives, this application proposes a smart wearable device, comprising: The device body includes a wearing structure and a driving component. The wearing structure includes a main body and an adjustment part connected to the main body. The driving component is disposed inside the main body, and the adjustment part is pulsatorically connected to the driving component. The driving component is used to drive the adjustment part to deform to have an unfolded position that presses against the user's skin and a contracted position that adheres to the user's skin. A processor, located within the main body, is used to receive the user's physiological characteristic information, and the processor is electrically connected to the drive unit. The processor controls the drive component to deform the adjustment part according to the physiological characteristic information, so that the device body switches between a first wearing state and a second wearing state; in the first wearing state, the adjustment part is in the unfolded position; in the second wearing state, the adjustment part is in the retracted position.

[0006] In one embodiment, the driving component includes a shape memory metal portion and a heating portion, the heating portion being disposed in contact with the shape memory metal portion and electrically connected to the processor; the processor controls the heating portion to be energized and heated, and the shape memory metal portion shrinks after being heated, thereby driving the adjustment portion to switch from the extended position to the retracted position; The smart wearable device also includes a locking mechanism, which includes a first locking part and a second locking part. The first locking part and the second locking part are respectively disposed on the adjustment part and the main body part, and the first locking part and the second locking part can be detachably engaged. In the first wearing state, the first locking part is separated from the second locking part; in the second wearing state, the first locking part and the second locking part cooperate to lock the adjustment part in the retracted position.

[0007] In one embodiment, the locking mechanism further includes an unlocking trigger, which is kinetically connected to the first locking part and communicatively connected to the processor; The processor is further configured to determine whether the user has entered a conscious state based on the physiological characteristic information; when it is determined that the user has entered the conscious state, the processor controls the unlocking trigger to disengage the first locking part from the second locking part.

[0008] In one embodiment, the unlocking trigger is one of an electric drive, a magnetic drive, or a thermal drive.

[0009] In one embodiment, the first locking part is a hook, and the second locking part is a locking groove; in the second wearing state, the hook is engaged with the locking groove.

[0010] In one embodiment, the device body further includes a communication module, which is communicatively connected to the processor. The communication module is used to communicate with an external physiological monitoring device and send the physiological characteristic information to the processor. The processor is further configured to determine whether the user has entered a sleep state based on the physiological characteristic information; when the user is determined to have entered a sleep state, the processor controls the drive component to switch the adjustment part from the unfolded position to the retracted position.

[0011] In one embodiment, the smart wearable device further includes a music control module, which is communicatively connected to the processor. The music control module is used to communicate with an external playback device through the communication module. When the processor determines that the user has entered the sleep state, the music control module sends a control signal to the external playback device to gradually reduce the playback volume until playback stops.

[0012] In one embodiment, the driving component includes a micro motor electrically connected to the processor and connected to the adjustment unit via a transmission mechanism; the micro motor is controlled by the processor and is used to drive the adjustment unit to switch between the extended position and the retracted position.

[0013] In one embodiment, the smart wearable device further includes an electrocardiogram (ECG) sensor, which is used to collect the physiological characteristic information; The processor is communicatively connected to the electrocardiogram sensor and is used to determine whether the user has entered a sleep state based on physiological characteristic information. When it is determined that the user has entered the sleep state, the processor controls the drive to move the adjustment part from the unfolded position to the retracted position.

[0014] This application also provides a control method for a smart wearable device, applied to the smart wearable device described above, the control method comprising: Receive user's physiological characteristic information; Determine whether the physiological characteristic information meets the preset switching conditions; If the preset switching conditions are met, the driving component is controlled to switch the adjustment part from the unfolded position to the retracted position.

[0015] The smart wearable device provided in this application solves the problem that existing wearable devices, which have fixed tightness or only allow limited manual adjustment, cannot meet the diverse comfort needs of users in different usage scenarios by employing a processor that automatically controls the drive component to deform the adjustment part based on physiological characteristic information. Specifically, when a user wears the device, the processor located in the main body receives the user's physiological characteristic information in real time and identifies the user's current scenario state based on this information. Subsequently, the processor sends control commands to the drive component electrically connected to it, and the drive component drives the adjustment part, which is connected to it, to deform according to the commands. When a stable fit is required (such as during exercise), the processor controls the drive component to deform the adjustment part to the unfolded position, switching the device to the first wearing state, where the adjustment part presses against the user's skin to prevent the device from falling off. When a comfortable and relaxed fit is required (such as during sleep), the processor controls the drive component to deform the adjustment part to the contracted position, switching the device to the second wearing state, where the adjustment part adheres to the user's skin to reduce pressure. Through the above structure, the device achieves intelligent, automatic, and stepless dynamic adjustment of the tightness of the fit, breaking the limitations of traditional fixed form or manual adjustment. By precisely linking the user's physiological characteristics with the physical deformation (expanded / contracted position) of the adjustment part, the device can adapt to the differentiated needs of different scenarios such as exercise, sleep, and work. While ensuring the stable implementation of the device's functions (preventing it from falling off), it effectively alleviates the pressure and discomfort caused by wearing it for a long time, greatly improving the user's overall wearing experience. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of the first embodiment of the smart wearable device provided in this application (with the adjustment part in the retracted position); Figure 2 A schematic diagram of the structure of the second embodiment of the smart wearable device provided in this application (with the adjustment part in the unfolded position); Figure 3 A flowchart illustrating an embodiment of the control method for a smart wearable device provided in this application.

[0018] Explanation of icon numbers: 100. Smart wearable device; 10. Device body; 11. Wearing structure; 111. Main body; 112. Adjustment part; 12. Drive component; 121. Memory metal part; 20. Locking mechanism; 21. First locking part; 22. Second locking part; 30. Electrocardiogram sensor.

[0019] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0023] This application proposes a smart wearable device 100.

[0024] Please see Figure 1 and Figure 2 In one embodiment, the smart wearable device 100 includes: The device body 10 includes a wearing structure 11 and a driving member 12. The wearing structure 11 includes a main body 111 and an adjustment part 112 connected to the main body 111. The driving member 12 is disposed inside the main body 111, and the adjustment part 112 is pulsatorically connected to the driving member 12. The driving member 12 is used to drive the adjustment part 112 to deform to have an unfolded position that presses against the user's skin and a contracted position that adheres to the user's skin. The processor is located inside the main body 111 and is used to receive the user's physiological characteristic information. The processor is electrically connected to the drive unit 12. The processor controls the drive unit 12 to deform the adjustment part 112 according to the physiological characteristic information, so that the device body 10 switches between a first wearing state and a second wearing state; in the first wearing state, the adjustment part 112 is in the unfolded position; in the second wearing state, the adjustment part 112 is in the retracted position.

[0025] It should be noted that smart wearable devices 100 refer to portable electronic devices that can be worn directly on a user's body, such as smart headphones, smart bracelets, or smart rings. The outer shell of this device is usually made of lightweight plastic or metal with a certain strength, and the overall shape is an ergonomic arc or ring structure to fit the physiological curves of the human body, such as the ear or wrist.

[0026] The device body 10 is the physical carrier of the smart wearable device 100. It has an overall shell structure with an internal cavity to carry the internal electronic components and the external wearing structure 11. The shell material of the device body 10 is usually made of hard resin or lightweight alloy to reduce the overall weight while providing sufficient support and protection.

[0027] The wearing structure 11 is a key part connecting the device body 10 to the user's body. Specifically, it can be an ear hook that fits the ear or a wristband that wraps around the wrist. This structure is usually made of flexible silicone or a composite material with embedded metal wires, which can ensure a soft touch when in contact with the skin, and also has a certain shaping ability to maintain a basic wearing shape.

[0028] The main body 111, as the core support section of the wearable structure 11, is typically a shell-like or flat plate-like structure with internal accommodating space. Its shell can be made of rigid plastic or aluminum alloy, and is mainly used to accommodate core electronic components such as the drive unit 12 and the processor, and to provide a robust skeletal support for the entire wearable structure 11.

[0029] The adjustment part 112 is a movable part of the wearing structure 11 that can undergo physical deformation. It can be a bent piece made of shape memory alloy or a micro airbag structure that can expand or contract. The surface of the adjustment part 112 that comes into direct contact with the user's skin is usually covered with skin-friendly flexible silicone or breathable fabric material, and changes the contact pressure with the skin through its own shape changes.

[0030] The drive element 12 is an actuator that provides mechanical power, and it can be a micro motor or a shape memory alloy actuator. The micro motor can convert rotational motion into linear thrust through a gear and rack mechanism, while the shape memory alloy actuator generates contraction or extension tension through thermal expansion and contraction when energized. The drive element 12 is securely mounted in the cavity of the main body 111 and is mechanically connected to the adjustment part 112.

[0031] The processor is the data processing and control center of the device, and it can be a microcontroller or a digital signal processor. The processor is integrated on the circuit board of the main body 111 and is responsible for receiving and parsing external input signals and converting them into control commands to be output to the driver 12. Its structure is usually a packaged chip with multiple pins.

[0032] Physiological characteristic information is biological data that reflects a user's current physical or activity status, specifically including the user's heart rate or blood oxygen data. This information can be obtained by collecting vascular volume pulse waves through the device's built-in optical sensors, or by collecting the user's body movement frequency through an accelerometer, serving as the basis for the processor to determine the user's current usage scenario.

[0033] The expanded position refers to the shape in which the adjustment part 112 expands outward under the action of the driving member 12. At this time, the adjustment part 112 presents an outward bulge or increased curvature structure, thereby increasing the pressure on the user's skin to achieve a tight fit. The contracted position refers to the shape in which the adjustment part 112 retracts inward under the action of the driving member 12. At this time, the adjustment part 112 presents a flattened or reduced curvature structure, thereby reducing the pressure on the skin to achieve an adherent fit.

[0034] In addition, the first wearing state is a tight-fitting mode, with the adjustment part 112 in the unfolded position. The device body 10 maintains a large friction and fit with the skin, suitable for scenarios requiring prevention of slippage, such as strenuous exercise. The second wearing state is a loose-fitting mode, with the adjustment part 112 in the retracted position. The device body 10 maintains a small contact pressure with the skin, suitable for scenarios requiring relaxation, such as sleep or prolonged sitting.

[0035] The smart wearable device 100 provided in this application, by employing a design where the processor automatically controls the drive component 12 to deform the adjustment part 112 based on physiological characteristic information, can solve the problem that existing wearable devices have fixed tightness or can only be adjusted manually to a limited extent, making it difficult to meet the different comfort needs of users in different usage scenarios. Specifically, when the user wears the device, the processor located in the main body 111 receives the user's physiological characteristic information in real time and identifies the user's current scenario state based on the physiological characteristic information; then, the processor sends a control command to the drive component 12 electrically connected to it, and the drive component 12 drives the adjustment part 112, which is connected to it, to deform according to the command; when a stable wearing is required (such as in a sports scenario), the processor controls the drive component 12 to deform the adjustment part 112 to the unfolded position, so that the device body 10 switches to the first wearing state, at which time the adjustment part 112 presses against the user's skin to prevent the device from falling off; when a comfortable relaxation is required (such as in a sleep scenario), the processor controls the drive component 12 to deform the adjustment part 112 to the contracted position, so that the device body 10 switches to the second wearing state, at which time the adjustment part 112 adheres to the user's skin to reduce pressure. Through the above structure, the device achieves intelligent, automatic, and stepless dynamic adjustment of the tightness of the fit, breaking the limitations of traditional fixed form or manual adjustment. By precisely linking the user's physiological characteristics with the physical deformation (expanded position / contracted position) of the adjustment unit 112, the device can adapt to the differentiated needs of different scenarios such as exercise, sleep, and work. While ensuring the stable implementation of the device's functions (preventing it from falling off), it effectively alleviates the pressure and discomfort caused by wearing it for a long time, greatly improving the user's overall wearing experience.

[0036] Please see Figure 1In one embodiment, the driving member 12 includes a shape memory metal part 121 and a heating part. The heating part is disposed in contact with the shape memory metal part 121 and is electrically connected to the processor. The processor controls the heating part to be energized and heated. After the shape memory metal part 121 is heated and heated, it contracts, thereby driving the adjustment part 112 to switch from the unfolded position to the retracted position. The smart wearable device 100 also includes a locking mechanism 20, which includes a first locking part 21 and a second locking part 22. The first locking part 21 and the second locking part 22 are respectively disposed on the adjustment part 112 and the main body part 111, and the first locking part 21 and the second locking part 22 can be detachably coupled. In the first wearing state, the first locking part 21 and the second locking part 22 are separated; in the second wearing state, the first locking part 21 and the second locking part 22 cooperate to lock together, so as to keep the adjustment part 112 in the retracted position.

[0037] It should be noted that the shape memory metal part 121 is the core component in the drive unit 12 that realizes deformation execution. Specifically, it can be made of nickel-titanium alloy wire or copper-zinc-aluminum shape memory alloy sheet. At room temperature, the shape memory metal part 121 presents as an extended straight strip or helical spring-like structure. When heated to a specific phase transition temperature, its internal crystal structure changes, thereby generating a significant contraction force along the length direction. When the temperature drops, it can return to its initial extended shape.

[0038] The heating element is a heat source that provides heat to the shape memory metal part 121. Specifically, it can be a ceramic heating element or a resistance heating wire. The shape of the heating element is usually designed as a thin sheet or a wound wire that fits the shape memory metal part 121. Its material must have good insulation and thermal conductivity to ensure that heat energy can be safely and efficiently transferred to the shape memory metal part 121 in contact with it when energized.

[0039] The heating element and the shape memory metal part 121 achieve physical contact through wrapping or wrapping, thereby constructing an efficient heat conduction path. At the same time, the heating element is electrically connected to the processor through internal wires or a flexible circuit board. The processor can output control signals to the heating element to turn the current on or off or adjust the current magnitude based on the judgment results of physiological characteristic information, thereby precisely controlling the heat generation of the heating element and the degree of thermal contraction of the shape memory metal part 121.

[0040] During the heat-shrinkage switching process, when the processor determines that it needs to switch to the second wearing state, it controls the heating element to be energized and generate heat. The heat is quickly conducted to the memory metal part 121 through the contact surface, causing its temperature to rise and triggering phase change shrinkage. Since the memory metal part 121 and the adjustment part 112 are mechanically linked, this shrinkage force directly causes the adjustment part 112 to shift or deform, allowing it to smoothly switch from the unfolded position that is pressed against the skin to the contracted position that is attached to the skin.

[0041] The locking mechanism 20 is a mechanical fastening component used to maintain the deformed state of the adjustment part 112. Specifically, it can be a magnetic latch structure or a hook and slot structure. This mechanism can fix the adjustment part 112 to the main body 111, effectively avoiding deformation rebound caused by the physical properties of thermal expansion and contraction of the shape memory metal part 121 or external tensile interference, and ensuring a stable and durable wearing state.

[0042] The first locking part 21 and the second locking part 22 are two cooperating components in the locking mechanism 20, respectively fixedly installed on the inner side of the adjusting part 112 and at corresponding positions on the main body 111. The first locking part 21 can specifically be a permanent magnet or an elastic hook with an inclined guide surface, and the second locking part 22 can specifically be a ferromagnetic metal block or a slot with anti-retraction teeth. The two are spatially opposite to each other and can move closer together or further apart as the adjusting part 112 moves.

[0043] In the first wearing state, the adjustment part 112 is in the extended position. The first locking part 21 and the second locking part 22 are separated as the adjustment part 112 expands, thus not interfering with the tightening and supporting action of the adjustment part 112. In the second wearing state, the adjustment part 112 is heated and retracted to the retracted position. The first locking part 21 and the second locking part 22 are aligned and locked together, for example, by magnetic attraction or by a hook fastening into a slot, thereby mechanically holding the adjustment part 112 in the retracted position.

[0044] In this embodiment, a thermal drive method using the shape memory metal part 121 in conjunction with the heating part replaces the traditional motor gear transmission, making the drive structure more compact, lightweight, and quiet and noiseless, greatly improving the user experience in quiet scenarios such as sleep. At the same time, by adding a locking mechanism 20, when the adjustment part 112 is retracted to the retracted position, the first locking part 21 and the second locking part 22 cooperate to mechanically lock it, effectively overcoming the problem that the shape memory metal part 121 is prone to automatically returning to its original shape after power failure and cooling, ensuring the stability and durability of the skin contact in the second wearing state, and avoiding the device from causing re-pressure on the skin due to deformation and rebound during long-term wear.

[0045] In one embodiment, the locking mechanism 20 further includes an unlocking trigger, which is connected in a transmission manner to the first locking part 21 and in a communication manner to the processor; The processor is also used to determine whether the user has entered a conscious state based on physiological characteristics; when it is determined that the user has entered a conscious state, the processor controls the unlocking trigger to drive the first locking part 21 to disengage from the second locking part 22.

[0046] It should be noted that the unlocking trigger is the active actuator in the locking mechanism 20 used to forcibly release the locked state. Specifically, it can be a miniature electromagnetic push rod or a piezoelectric ceramic actuator. This element is typically encapsulated in an insulating resin or metal shielding housing. Its actuating end is a retractable columnar push rod or a plate-like fork structure, primarily utilizing electromagnetic force or the inverse piezoelectric effect to convert electrical signals into precise linear displacement output. The unlocking trigger is mechanically connected to the first locking part 21 through its actuating end. Specifically, it can be hinged to the root of the first locking part 21 via a pivot, or slidably abut against the side slope of the first locking part 21, thereby transmitting its linear driving force to the first locking part 21, forcing the first locking part 21 to deflect or translate. Simultaneously, the unlocking trigger maintains a communication connection with the processor via a flexible cable or conductive contacts to receive action commands issued by the processor in real time.

[0047] Determining wakefulness involves integrated data analysis logic within the processor. The processor identifies the user's current activity level based on fluctuations in physiological characteristics. Specifically, criteria for determining wakefulness may include a significant increase in heart rate variability or a marked increase in limb movement frequency. When the processor detects that these physiological indicators of activity exceed a preset wakefulness threshold, it determines that the user has transitioned from sleep or rest to wakefulness.

[0048] The unlocking process is a linked process in which the device automatically returns to a locked state from a relaxed state. When the processor determines that the user has entered a conscious state, it outputs a trigger current to the unlocking trigger. After the unlocking trigger is energized, its actuating end quickly generates an outward pushing force or an inward pulling force. This mechanical force acts directly on the first locking part 21 through the transmission connection, forcing the first locking part 21 to displace, for example, pushing the hook out of the slot or pushing the magnet away from the adsorption surface, so that the first locking part 21 can smoothly disengage from the second locking part 22, thereby releasing the positional constraint on the adjustment part 112, allowing the adjustment part 112 to freely spring back to the unfolded position that presses against the skin.

[0049] In this embodiment, by adding an unlocking trigger connected to the processor and introducing wakefulness judgment logic based on physiological characteristic information, the smart wearable device 100 automatically and seamlessly switches back to the wearing state when the user transitions from sleep to wakefulness. When the user wakes up and begins to move, the device can actively sense and trigger unlocking, causing the adjustment part 112 to quickly return to the anti-fall-off unfolded position. This avoids the risk of the device falling off when the user gets up and moves because it is in the relaxed retracted position. The entire process does not require manual operation by the user, greatly improving the intelligence level and reliability of the device when switching between different scenarios.

[0050] In one embodiment, the unlocking trigger is one of an electric drive, a magnetic drive, or a thermal drive.

[0051] It should be noted that electric drive components are actuators that directly convert electrical energy into mechanical motion using electromagnetic induction or piezoelectric effect. Specifically, they can be represented as rotary stepper motors combined with cam mechanisms or voice coil motors. Rotary stepper motors typically consist of a stator with enameled copper wire windings and a multi-pole magnet rotor. When energized, the rotor rotates and drives the irregularly shaped cam at the front end to rotate. The cam's protrusion pushes against the first locking part 21, causing displacement. Voice coil motors, on the other hand, contain a cylindrical permanent magnet and a hollow coil located within it. When energized, the coil generates a linear thrust in the magnetic field, directly pushing against the first locking part 21 to disengage it from the second locking part 22.

[0052] A magnetic drive component is a device that uses changes in a magnetic field to generate mechanical force for unlocking. Specifically, it can be represented by a reversible electromagnetic coil or an electromagnet attraction structure. A reversible electromagnetic coil consists of a soft magnetic core with high permeability and an excitation coil wound around it. By changing the direction of the coil current through a processor, the magnetic poles at the end face of the iron core can be instantly reversed, generating a repulsive force with the adjacent first locking part 21, thus pushing it open. An electromagnet attraction structure, on the other hand, magnetizes the internal iron core after being energized, generating a strong magnetic field that attracts the first locking part 21, made of ferromagnetic material, causing it to overcome the original locking force and move towards the electromagnet side, thus unlocking it.

[0053] Thermal actuators are actuating elements that convert thermal energy into mechanical displacement by utilizing the thermal expansion and contraction or phase change properties of materials. Specifically, they can be bimetallic thermal actuators or shape memory alloy thermal actuators. A bimetallic thermal actuator consists of two metal sheets with significantly different coefficients of thermal expansion, typically one layer being a high-expansion manganese-copper alloy and the other a low-expansion alloy. When heated by a built-in miniature heating resistor, the inconsistent expansion of the two metal layers causes the entire assembly to bend and flip to one side, thereby actuating the first locking part 21. A shape memory alloy thermal actuator is a miniature actuating structure that utilizes the reversible phase change property of shape memory alloys at specific temperatures to output displacement. Specifically, it can be a nickel-titanium alloy element in the form of a U-shaped bending spring or a torsion spring. At room temperature, this element remains open or at a specific angle. When the processor controls it to be energized and heated to the phase change temperature, the internal crystal structure of the element reorganizes, rapidly restoring it to a preset contracted or straightened shape. The strong restoring force or torque generated by this shape change directly acts on the first locking part 21, pushing or pulling it out of the second locking part 22, completing the unlocking action.

[0054] In this embodiment, by limiting the unlocking trigger to one of the following: an electric drive, a magnetic drive, or a thermal drive, a variety of driving schemes based on different physical principles are provided for the unlocking action of the locking mechanism 20, greatly enriching the flexibility of the internal structural layout of the device. In particular, the introduction of bimetallic strips or shape memory alloys as thermal drive components not only results in an extremely compact structure, facilitating placement within small wearable devices, but also ensures quiet and noiseless operation, avoiding electromagnetic interference. This diverse configuration allows designers to flexibly select the most suitable driving form based on the shape of the remaining internal space of the device and the requirements for quietness and anti-interference, ensuring reliable execution of the unlocking action while enhancing the freedom of overall structural design and user experience of the smart wearable device 100.

[0055] In one embodiment, the first locking part 21 is a hook, and the second locking part 22 is a locking groove; in the second wearing state, the hook is engaged with the locking groove.

[0056] It should be noted that the hook is the specific physical form of the first locking part 21, which is a protruding structure with a hook-shaped end and an elastic cantilever. Specifically, it can be a single-cantilever right-angle buckle or a V-shaped double-cantilever spring buckle. This structure is usually made of a material with good elastic deformation capability and mechanical toughness, such as polycarbonate plastic or spring steel sheet. When subjected to external pushing or squeezing, its cantilever part can elastically bend to avoid obstacles, and can quickly spring back to its original shape after the external force is removed.

[0057] The locking groove is the specific physical form of the second locking part 22. It takes the form of a recessed structure with an open cavity or a through hole structure, specifically a rectangular through groove or a dovetail groove with an inclined guide surface. This structure is usually made of a material with high hardness and wear resistance, such as stainless steel or hard plastic with a hardened surface. Its opening edge is usually designed as a smooth wedge-shaped guide surface to facilitate the smooth entry of the hook. The groove is provided with a step to prevent backing up that matches the hook-shaped end.

[0058] The locking mechanism 20 achieves mechanical fixation in the second wearing state by engaging the hook into the locking groove. When the device switches to the second wearing state, the adjusting part 112 moves to the retracted position, causing the hook to gradually approach and align with the locking groove. As the adjusting part 112 further retracts, the cantilever front end of the hook contacts the guide surface of the opening of the locking groove and bends back under force, allowing the hook-shaped end to slide into the cavity. When the hook-shaped end passes the stop step, the cantilever loses the compressive force and rebounds instantly, causing the hook-shaped end to form a rigid engagement with the stop step, thereby firmly locking the adjusting part 112 and the main body 111 in the retracted position.

[0059] In this embodiment, by specifying the locking mechanism 20 as the cooperation between a hook and a locking groove, a purely mechanical snap-locking solution with a simplified structure and reliable locking is provided. The physical snap-fit ​​between the hook and the locking groove is not only easy to process and form with low manufacturing cost, but also achieves reliable self-locking strength through the interference of rigid shapes, effectively preventing the adjustment part 112 from accidentally loosening when it is in the retracted position. At the same time, the rebound action of the cantilever when the hook slides into the locking groove can also provide clear vibration and sound feedback, allowing users and internal sensors of the equipment to clearly perceive whether the locking is in place, further improving the reliability of state switching and the interactive experience.

[0060] In one embodiment, the device body 10 further includes a communication module, which is communicatively connected to the processor. The communication module is used to communicate with an external physiological monitoring device and send physiological characteristic information to the processor. The processor is also used to determine whether the user has entered a sleep state based on physiological characteristics; when it is determined that the user has entered a sleep state, the processor controls the drive unit 12 to drive the adjustment unit 112 to switch from the unfolded position to the retracted position.

[0061] It should be noted that the communication module is a wireless communication unit within the device body 10 responsible for data interaction with the outside world. Specifically, it can be a Bluetooth module or a Wi-Fi module. This module is usually soldered onto the circuit board inside the device in the form of a surface-mount integrated circuit. Its antenna part can use a flexible printed circuit board (FPC) antenna or a ceramic patch antenna to transmit and receive radio frequency signals in a specific frequency band, thereby establishing a stable and low-latency data bridge with external devices.

[0062] The communication module communicates and transmits data with external physiological monitoring devices, enabling sensory collaboration among multiple devices. These external physiological monitoring devices can be smart bracelets or smartwatches. These devices are placed close to the user's skin to collect raw physiological signals, then package the processed physiological characteristic information into data frames and send them to the communication module via a wireless channel. After demodulation and decoding, the communication module transmits the restored digital signal to the processor via an internal bus, thus compensating for the limitations of the wearable device's own sensor types or monitoring accuracy.

[0063] Determining whether a user has entered a sleep state involves deep data analysis logic executed by the processor based on the fluctuation trends of physiological characteristic information. The processor continuously parses the received physiological characteristic information, extracting key sleep-related indicators. These may include a sustained decrease in the user's heart rate and its stabilization within a specific resting heart rate range, or a significant decrease in the frequency of the user's limb movements that persists for more than a preset time threshold. When the combined changes in these multiple indicators conform to a preset sleep determination model, the processor determines that the user has entered a sleep state.

[0064] Once the device detects that the user has entered a sleep state, the processor generates a corresponding relaxation command and outputs it to the drive unit 12, which in turn controls the adjustment unit 112 to switch from the extended position to the retracted position. This control process allows the device to actively release the pressure on the user's skin after sensing that the user has fallen asleep, automatically loosening the originally tight wearing structure 11 to a gently fitting state.

[0065] In this embodiment, by adding a communication module to link with external physiological monitoring equipment, the limitation of the limited monitoring dimensions of the internal sensors of a single device is broken. With the help of external professional monitoring equipment, more comprehensive and accurate physiological characteristic information is obtained, which greatly improves the accuracy of sleep state judgment. At the same time, based on accurate sleep judgment, the automatic control adjustment unit 112 switches to the contracted position, realizing the intelligent and seamless switching of automatic pressure reduction of the device the moment the user falls asleep. This eliminates the tediousness of manual adjustment when the user is drowsy, effectively avoids the impact of prolonged tight wearing on sleep quality, and effectively improves the comfort of continuous nighttime wear and the intelligent experience of the device.

[0066] In one embodiment, the smart wearable device 100 further includes a music control module, which is communicatively connected to the processor. The music control module is used to communicate with an external playback device through a communication module. When the processor determines that the user has entered a sleep state, the music control module sends a control signal to the external playback device to gradually reduce the playback volume until playback stops.

[0067] It should be noted that the music control module is a functional unit within the device body 10 specifically designed to generate and manage audio playback status commands. Specifically, it can be a standalone audio digital signal processor or a microcontroller unit with logic operation capabilities. This module is typically integrated onto the circuit board inside the device as a silicon wafer surface-mount chip, encapsulated in an epoxy resin shell. It is responsible for compiling and outputting volume adjustment and pause control signals conforming to a specific protocol.

[0068] An external playback device is an electronic device that is independent of the smart wearable device 100 and has an external audio playback function. It is usually a mobile phone or computer. These devices typically have a built-in dynamic speaker or piezoelectric ceramic sound unit and are equipped with a radio frequency antenna that matches the frequency band of the communication module. They can receive wireless commands and change their own audio output status in real time. Their shells are mostly made of plastic or wood to provide an acoustic cavity.

[0069] The music control module works in conjunction with the processor and communication module to establish a control link from the wearable device to the external playback device. The music control module interacts with the processor via an internal serial bus and relies on the communication module as a bridge for signal transmission. When it is necessary to intervene in the audio status, the music control module transmits the generated control signal to the communication module, which then modulates it into a radio frequency signal and sends it to the external playback device.

[0070] Gradually reducing the playback volume until playback stops is a progressive audio intervention strategy executed by the music control module. This can be achieved through a continuous smooth fade-out algorithm or a stepped volume decay step. The continuous smooth fade-out algorithm continuously reduces the digital gain of the audio data according to a preset time slope, making the sound fade away smoothly like flowing water. The stepped volume decay step decreases by a set volume percentage every fixed number of seconds, gradually reducing the volume to zero after multiple stages, and then sending a stop playback command to the external playback device.

[0071] In this embodiment, by adding a music control module, the sleep monitoring function of the smart wearable device 100 is deeply intelligently linked with external audio playback. When the user falls asleep with music, the device can automatically intervene based on the determined sleep state, gradually reducing the volume until playback stops. This avoids the problem of continuous music playback interfering with deep sleep or sudden silence causing the user to wake up, creating a smooth and comfortable acoustic environment for falling asleep. At the same time, this fully automatic audio intervention mechanism eliminates the need for the user to manually turn off the music when drowsy, further expanding the automated closed-loop control capability of the smart wearable device 100 in sleep scenarios and enhancing the overall intelligent experience.

[0072] In one embodiment, the drive unit 12 includes a micro motor electrically connected to the processor and connected to the adjustment unit 112 via a transmission mechanism; the micro motor is controlled by the processor and is used to drive the adjustment unit 112 to switch between an extended position and a retracted position.

[0073] It should be noted that the micro motor is the core power source in drive component 12 that converts electrical energy into rotating mechanical power. Specifically, it can be a stepper motor or a coreless motor. This component typically has a cylindrical or flat disc-shaped housing structure, often made of highly permeable soft magnetic ferrite or lightweight aluminum alloy. Internally, it contains a stator coil wound with high-strength enameled copper wire and a rotor made of neodymium iron boron permanent magnet material. The micro motor possesses precise start-stop response capabilities, enabling accurate control of forward and reverse rotation, as well as the rotation angle, based on electrical signal commands.

[0074] The micro motor connects to the processor via conductive connectors, which can be flexible circuit board cables or metal conductive springs. The processor outputs pulse-width modulation (PWM) signals or directional level signals to the micro motor's drive circuit through these connections, thereby precisely controlling the micro motor's start, stop, rotation direction, and output shaft rotation angle, ensuring that the timing and amplitude of power output match the user's physiological needs.

[0075] The transmission mechanism is a mechanical component that connects the output shaft of the micro motor to the adjusting part 112 and is used for motion conversion and power transmission. Specifically, it can be a gear and rack mechanism or a worm gear mechanism. This mechanism is typically made of wear-resistant and self-lubricating materials, such as polyoxymethylene engineering plastics or powder metallurgy stainless steel. The gear and rack mechanism includes a circular involute gear and a long rack, while the worm gear mechanism includes a cylindrical worm with helical teeth and a disc-shaped worm wheel with toothed edges. These components mesh with each other, precisely converting the high-speed rotational motion of the micro motor output shaft into low-speed, high-torque linear push-pull motion.

[0076] When the device needs to switch from the first wearing state to the second wearing state, the micro motor is controlled by the processor to rotate in the forward direction. Its output shaft drives the transmission mechanism to operate. The transmission mechanism converts the rotational force into a linear pull force, and the traction adjustment part 112 retracts and moves towards the main body part 111, so that it returns to the retracted position that is in contact with the skin. Conversely, when the micro motor rotates in the reverse direction, the transmission mechanism converts the rotational force into a linear push force, pushing the adjustment part 112 to extend outward, so that it reaches the unfolded position that is in close contact with the skin, thereby realizing a smooth physical switch between the two wearing states.

[0077] In this embodiment, a powerful and highly controllable mechanical driving force is provided for the deformation of the adjustment unit 112 by employing a drive combination of a micro motor and a transmission mechanism. Compared to the driving method that relies on the material's own phase change contraction, the micro motor, through the deceleration and torque amplification effect of the transmission mechanism, can output a more abundant push-pull force to overcome the resistance of the deformation of the wearing structure 11, ensuring reliable switching between the unfolded and retracted states in scenarios of violent shaking such as movement; at the same time, the stepping characteristics of the micro motor and the transmission mechanism enable the processor to perform reliable and precise subdivided control of the displacement stroke of the adjustment unit 112, realizing the possibility of multi-level or stepless fine adjustment between unfolding and retracting, thereby meeting the refined and personalized needs of different users for the tightness of the fit.

[0078] Please see Figure 1 and Figure 2 In one embodiment, the smart wearable device 100 further includes an electrocardiogram (ECG) sensor 30, which is used to collect physiological characteristic information; The processor communicates with the ECG sensor 30 to determine whether the user has entered a sleep state based on physiological characteristics. When the user is determined to be asleep, the processor controls the drive unit 12 to switch the adjustment unit 112 from the extended position to the retracted position.

[0079] It should be noted that the ECG sensor 30 is the core detection element within the device body 10 used to capture cardiac electrophysiological signals. Specifically, it can be a metal dry electrode or a conductive rubber electrode. This sensor typically presents as a slightly convex dome-shaped or elongated thin sheet structure to facilitate a close physical fit with the skin. Its materials are often medical-grade stainless steel, gold-plated copper alloy, or silicone doped with conductive carbon black. These materials possess excellent conductivity and skin biocompatibility, enabling them to penetrate the skin's surface impedance and accurately acquire the weak bioelectric potential difference generated by each heartbeat.

[0080] Acquiring physiological characteristic information is the process by which the ECG sensor 30 converts the mechanical beating of the heart into electrical signals and digitizes them. The specific content acquired may include ECG waveform clusters or RR interval sequences. When the electrodes of the ECG sensor 30 are in stable contact with the user's skin, a closed measurement loop is formed with the human body, capturing the microvolt-level potential difference that changes periodically with the heart's contraction and relaxation. Subsequently, these analog electrical signals are amplified, filtered, and converted into digital characteristic information by the internal high-precision analog-to-digital conversion circuit, which is then used by the processor for subsequent calculations and analysis.

[0081] The processor determines whether a user has entered a sleep state based on physiological characteristics. This process relies on deep analysis of the central nervous system's state using electrocardiogram (ECG) data. Specific criteria for this determination include frequency domain analysis of heart rate variability or comparison of resting heart rate thresholds. Since the autonomic nervous system shifts to parasympathetic dominance during sleep, the processor analyzes the RR interval sequence to extract changes in the ratio of high-frequency to low-frequency components, or monitors whether the average heart rate falls below a specific low-value range within a continuous cycle. When these ECG indicators consistently meet the decay and redistribution patterns typical of sleep, the processor determines that the user has entered a sleep state.

[0082] When the device determines that the user has entered a sleep state, the processor controls the drive unit 12 to switch the adjustment part 112 from the extended position to the retracted position. This is a mechanical adaptive adjustment process triggered by the ECG monitoring results. Once the processor confirms that the ECG characteristics match the sleep model, it immediately outputs an action command to the drive unit 12. The drive unit 12 then releases its thrust or changes its shape, causing the adjustment part 112, which was originally pressed tightly against the skin to prevent it from falling off, to retract inward and become gently attached to the skin, thereby automatically eliminating the rigid pressure feeling after the user falls asleep.

[0083] In this embodiment, by introducing an electrocardiogram (ECG) sensor 30 as a source of physiological characteristic information, the accuracy and predictability of sleep state judgment are greatly improved. Compared with indirect inference based on body acceleration, ECG signals can directly reflect the tension changes of the central autonomic nervous system, making the perception of subtle physiological transitions in the early stages of sleep more sensitive. This high-precision judgment based on deep ECG indicators effectively avoids erroneous loosening caused by misjudging the user as sleep when the user is merely sitting and resting, ensuring that the timing of the wearing state switch matches the user's actual sleep process, and achieving a more scientific and reliable intervention for sleep comfort while ensuring the device's anti-fall-off requirements.

[0084] Please see Figure 3 This application also provides a control method for a smart wearable device 100, applied to the smart wearable device 100 as described above, the control method including: S10. Receive the user's physiological characteristic information; It should be noted that receiving the user's physiological characteristic information is the data acquisition step initiated by the control method. Specifically, this refers to the device's processor acquiring digital indicators reflecting the user's current bodily functions in real time through communication interfaces or internal sensing components. This physiological characteristic information may include heart rate variability data reflecting changes in autonomic nerve tension or blood oxygen saturation data reflecting the blood's oxygen-carrying capacity. By continuously reading these dynamically updated data streams, a reliable real-time status basis is provided for subsequent logical judgments.

[0085] S20. Determine whether the physiological characteristic information meets the preset switching conditions; It should be noted that determining whether physiological characteristic information meets preset switching conditions is the core logical decision-making step in the control method. Essentially, it involves comparing real-time acquired physiological data with pre-defined state thresholds or feature models. Preset switching conditions can specifically manifest as a continuous decrease in average heart rate to a specific resting range and maintenance for more than a first set duration, or a body movement frequency per unit time falling below a specific wake-up threshold. When the processor parses the input physiological characteristic data and consistently satisfies either of these mathematical conditions, it determines that the user's current physical state has undergone a fundamental change, fulfilling the logical premise for triggering mechanical structural action.

[0086] S30. If the preset switching conditions are met, the control drive 12 drives the adjustment part 112 to switch from the unfolded position to the retracted position.

[0087] It should be noted that if the preset switching conditions are met, the control drive 12 will drive the adjustment part 112 to switch from the unfolded position to the retracted position. This is the final execution step of the control method, which aims to transform logical decisions into changes in physical form. When the judgment condition is met, the processor outputs the corresponding control command to the drive 12. This control action can specifically manifest as outputting a pulse width modulation signal to control the micro motor to rotate forward to pull the adjustment part 112 back, or outputting a heating current to cause the shape memory alloy to shrink due to heat to pull the adjustment part 112. Through this conversion of electrical signals into mechanical displacement, the adjustment part 112 is forced to overcome the original form's resistance and move smoothly towards the main body 111, ultimately conforming to the skin surface to complete the physical switch from a tight-fitting, anti-detachment state to a loose, decompression state.

[0088] This embodiment provides an implementation of a smart wearable device 100, which is an in-ear headphone and includes a device body 10. The device body 10 internally houses a processor, a communication module, a music control module, a driver 12, a locking mechanism 20, an unlocking trigger, and a pressure sensor.

[0089] The communication module is specifically a Bluetooth module. Its antenna is attached to the inner wall of the earphone shell in the form of a flexible printed circuit board (FPC). The communication module communicates with the processor to establish a wireless communication connection with an external physiological monitoring device (specifically a smartwatch worn on the user's wrist) and receive physiological characteristic information, including heart rate data, collected by the smartwatch. At the same time, the pressure sensor is specifically a piezoresistive thin-film sensor, attached to the outer surface of the earphone shell that fits into the ear canal. It is used to collect analog signals of ear canal contact pressure and transmit them to the processor. The processor combines the dual characteristic information of decreased heart rate and stable ear canal pressure to determine whether the user has entered a sleep state.

[0090] The drive unit 12 includes a micro motor and a transmission mechanism containing a shape memory alloy wire. Specifically, the micro motor is a coreless motor, electrically connected to the processor via a flexible ribbon cable. The transmission mechanism includes a winding reel and a nickel-titanium shape memory alloy wire. The output shaft of the micro motor is coaxially fixed to the winding reel. One end of the shape memory alloy wire is anchored to the winding reel, and the other end is connected to the adjustment unit 112. The adjustment unit 112 is specifically an elastic expansion umbrella that can radially open and close at the earphone in-ear end. This expansion umbrella has an unfolded position that presses against the ear canal (corresponding to the first wearing state, i.e., the normal listening and anti-fall-out state) and a retracted position that detaches from the ear canal wall (corresponding to the second wearing state, i.e., the sleep decompression and relaxation state).

[0091] The locking mechanism 20 includes a first locking part 21 and a second locking part 22. The first locking part 21 is a hook, and the second locking part 22 is a locking groove. The hook is specifically a cantilevered polycarbonate plastic buckle with an inclined guide surface, which is disposed at the base of the expansion umbrella of the adjustment part 112. The locking groove is specifically a stainless steel rectangular through groove with a step to prevent backflow, which is fixed to the inner wall of the main shell of the earphone. When the adjustment part 112 is in the retracted position, the hook slides into the locking groove as the expansion umbrella retracts and forms a rigid engagement, so that the locking mechanism 20 maintains the second wearing state even when the power is off.

[0092] The unlocking trigger is specifically a shape memory alloy thermal actuator in the thermal drive unit. It is a U-shaped nickel-titanium alloy spring that is tightly attached to the root of the cantilever of the hook component and electrically connected to the processor via a wire. When the user wakes up, the processor determines that the user has entered a conscious state based on the physiological characteristic information of heart rate recovery. It then controls the unlocking trigger to be instantly energized and heated. The U-shaped spring undergoes a phase change and contracts upon heating, generating an outward expansion thrust that directly pushes the cantilever of the hook component, causing it to bend elastically. This forces the hook component to disengage from the anti-retraction step of the locking groove component, completing the energized unlocking. Subsequently, the micro motor reverses or the shape memory alloy wire cools and resets, causing the adjustment unit 112 to switch from the contracted position back to the extended position.

[0093] The music control module communicates with the processor and also with external playback devices (such as smartphones) via a communication module. When the processor determines that the user has entered a sleep state, the music control module generates an audio intervention command and sends it to the smartphone, executing a stepped volume decay step to gradually reduce the playback volume until a termination command to stop playback is finally sent.

[0094] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A smart wearable device, characterized in that, include: The device body includes a wearing structure and a driving component. The wearing structure includes a main body and an adjustment part connected to the main body. The driving component is disposed inside the main body, and the adjustment part is pulsatorically connected to the driving component. The driving component is used to drive the adjustment part to deform to have an unfolded position that presses against the user's skin and a contracted position that adheres to the user's skin. A processor, located within the main body, is used to receive the user's physiological characteristic information, and the processor is electrically connected to the drive unit. The processor controls the drive component to deform the adjustment part according to the physiological characteristic information, so that the device body switches between a first wearing state and a second wearing state; in the first wearing state, the adjustment part is in the unfolded position; in the second wearing state, the adjustment part is in the retracted position. The driving component includes a shape memory metal part and a heating part. The heating part is in contact with the shape memory metal part and is electrically connected to the processor. The processor controls the heating part to be energized and heated. After the shape memory metal part is heated, it contracts, thereby driving the adjustment part to switch from the extended position to the retracted position. The smart wearable device also includes a locking mechanism, which includes a first locking part and a second locking part. The first locking part and the second locking part are respectively disposed on the adjustment part and the main body part, and the first locking part and the second locking part can be detachably engaged. In the first wearing state, the first locking part is separated from the second locking part; in the second wearing state, the first locking part and the second locking part cooperate to lock the adjustment part in the retracted position. The locking mechanism further includes an unlocking trigger, which is pulsatorically connected to the first locking part and communicatively connected to the processor; The processor is further configured to determine whether the user has entered a conscious state based on the physiological characteristic information; when it is determined that the user has entered the conscious state, the processor controls the unlocking trigger to cause the first locking part to disengage from the second locking part; When the processor determines that the user has entered a sleep state, it controls the drive to move the adjustment part from the unfolded position to the retracted position.

2. The smart wearable device as described in claim 1, characterized in that, The unlocking trigger is one of an electric drive, a magnetic drive, or a thermal drive.

3. The smart wearable device as described in claim 1, characterized in that, The first locking part is a hook, and the second locking part is a lock groove; in the second wearing state, the hook is engaged with the lock groove.

4. The smart wearable device as described in claim 1, characterized in that, The device body also includes a communication module, which is communicatively connected to the processor. The communication module is used to communicate with external physiological monitoring devices and send the physiological characteristic information to the processor. The processor is further configured to determine whether the user has entered a sleep state based on the physiological characteristic information; when it is determined that the user has entered a sleep state, the processor controls the drive to move the adjustment part from the unfolded position to the retracted position.

5. The smart wearable device as described in claim 4, characterized in that, The smart wearable device also includes a music control module, which is communicatively connected to the processor. The music control module is used to communicate with an external playback device through the communication module. When the processor determines that the user has entered the sleep state, the music control module sends a control signal to the external playback device to gradually reduce the playback volume until playback stops.

6. The smart wearable device as described in any one of claims 1 to 5, characterized in that, The driving component includes a micro motor, which is electrically connected to the processor and connected to the adjustment unit via a transmission mechanism. The micro motor is controlled by the processor and is used to drive the adjustment unit to switch between the extended position and the retracted position.

7. The smart wearable device as described in any one of claims 1 to 5, characterized in that, The smart wearable device also includes an electrocardiogram (ECG) sensor, which is used to collect the physiological characteristic information. The processor is communicatively connected to the electrocardiogram sensor and is used to determine whether the user has entered a sleep state based on physiological characteristic information.

8. A control method for a smart wearable device, applied to the smart wearable device as described in any one of claims 1 to 7, characterized in that, The control method includes: Receive user's physiological characteristic information; Determine whether the physiological characteristic information meets the preset switching conditions; If the preset switching conditions are met, the driving component is controlled to switch the adjustment part from the unfolded position to the retracted position.

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