An intelligent eyewear

Abstract

The application relates to a wearable electronic device, and discloses a smart glasses. The smart glasses comprise a glasses frame and a glasses leg, and further comprise: a sound emitting unit, comprising a sound emitting component arranged at an ear close position of the glasses leg, the sound emitting component comprising a piezoelectric film; a mainboard unit, used for outputting an audio signal according to a received audio stream; a driving unit, used for generating an alternating voltage according to the audio signal and driving the piezoelectric film; and a power management unit, used for providing power supply for the mainboard unit and the driving unit. The scheme of the application can effectively simplify an audio output structure, meet the design requirements of light weight and portability of the smart glasses, reduce the wearing weight feeling, improve the modeling adaptability and design freedom, improve the waterproof, dustproof and other ability levels, realize directional sound emission and improve the audio playing privacy.

Description

Technical Field

[0001] This application relates to wearable electronic devices, and more particularly to a type of smart glasses. Background Technology

[0002] Currently, smart glasses generally use traditional dynamic speakers or bone conduction vibration motors to achieve audio output. The working principle of a dynamic speaker is as follows: an alternating current output from an audio amplifier drives the voice coil inside the speaker to move up and down within a fixed magnetic field formed by a permanent magnet. The voice coil drives the diaphragm to vibrate reciprocally, compressing the surrounding air and generating airborne sound waves to produce sound. The principle of a bone conduction motor is as follows: when an eccentric rotor or magnetic vibration component is energized, it generates low-frequency mechanical vibrations, causing the temples of the glasses to vibrate significantly. Through skin contact, these macroscopic mechanical vibrations are transmitted to the skull, achieving bone conduction hearing.

[0003] However, with the increasing demand for lightweight, precision, and multifunctional smart glasses, the two audio output solutions mentioned above have one or more shortcomings. First, they are large in size and have many components, making it difficult to achieve extreme lightweighting and ultra-thinness. Specifically, dynamic speakers require the integration of multiple complex structures such as permanent magnets, voice coils, diaphragms, frames, and dust covers. The number of parts is large, and the stacked thickness is significant, with a minimum thickness generally exceeding 3.5mm. This makes it impossible to embed smaller, ultra-thin temple structures. On the other hand, dynamic bone conduction motors require the configuration of mass blocks and eccentric structures to ensure sound pressure, resulting in a large overall size and weight. This makes it difficult to reduce the overall weight and size of smart glasses, leading to strong ear pressure, head clamping, and ear dragging sensations when worn, resulting in high fatigue during long-term wear and seriously affecting the wearing experience.

[0004] Secondly, the presence of sound outlets results in poor overall sealing and low protection levels. Specifically, dynamic speakers rely on diaphragm vibrations to produce sound, requiring exposed sound outlets in their structure. This prevents a fully enclosed structure, leading to permanent through-holes in the temples of smart glasses. Dust, sweat, and moisture can easily enter the temples, causing circuit board corrosion, component oxidation, noise distortion, and component failure. Consequently, the waterproof and dustproof ratings of these products are generally low, making it difficult to meet the high reliability requirements of sports, outdoor activities, and everyday sweaty scenarios.

[0005] Third, the vibration amplitude is large, sound leakage is serious, and privacy is poor. Specifically, in order to ensure loudness, the temples of the glasses vibrate significantly, and the whole device resonates violently. Not only does it cause a numb and uncomfortable feeling when wearing them, but the large-scale vibration of the shell will also radiate a lot of air noise to the outside world. This results in serious sound leakage in public, poor private call quality, and easy leakage of voice content when used in public places.

[0006] Fourth, the high structural redundancy hinders the miniaturization of the entire device. Specifically, the generating unit based on the above two schemes requires reserved space for the sound cavity, sound outlet channel, and fixed bracket, occupying a large amount of internal space in the temple and squeezing the layout of the battery, motherboard, and sensor. This results in the entire device having to be designed to be thicker and thicker, with a bulky appearance and poor integration, making it difficult to achieve a lightweight and minimalist consumer product design.

[0007] The above-mentioned one or more deficiencies urgently need to be improved or resolved by those skilled in the art. Summary of the Invention

[0008] In view of this, the embodiments of this application aim to provide a smart glasses that uses a piezoelectric film as a sound source to achieve audio output, which can solve one or more shortcomings of the prior art and adapt to the development needs of smart glasses for lightweighting, precision and multi-functionality.

[0009] This application provides an embodiment of smart glasses including a frame and temples, and further including: a sound-generating unit, including a sound-generating component disposed near the ear on the temple, the sound-generating component including a piezoelectric film; a main board unit for outputting an audio signal according to a received audio stream; a driving unit for generating an alternating voltage according to the audio signal and driving the piezoelectric film; and a power management unit for providing power to the main board unit and the driving unit.

[0010] In terms of structure, the sound-generating component of the sound-generating unit is located near the ear on the temple of the smart glasses. The sound-generating component includes a piezoelectric film. In terms of power supply, a power management unit provides power to the main board unit and the drive unit. In terms of signal output and control, the main board unit processes the audio stream from the audio source (device) and outputs an audio signal. The drive unit generates an alternating voltage based on the audio signal to drive the piezoelectric film to vibrate and generate sound, thus producing a corresponding audio output.

[0011] Because the piezoelectric film generates extremely small vibration displacement when it is working, generally at the micrometer level, the overall structure, including the sound-generating component, does not need to reserve a large vibration space. In addition, the piezoelectric film itself is thin and light, and after assembly, it will hardly increase the volume and weight of the temples. This helps to meet the design requirements of lightweight and portable smart glasses and reduce the feeling of wearing weight.

[0012] In addition, due to the excellent plasticity and flexibility of piezoelectric films, they can be cut, bent and fitted according to the curvature, contour and shape of different styles of temples to adapt to various temple structures such as straight, curved and streamlined, with strong shape adaptability and high design freedom.

[0013] In addition, during operation, the piezoelectric film and temples vibrate only slightly, without producing noticeable vibrations or numbness, making them suitable for prolonged wear.

[0014] In addition, since the sound is generated by the vibration of the piezoelectric film itself, there is no need to open the sound outlet on the temples compared with the existing technology. The whole device can be made into a fully enclosed structure, which can effectively improve the waterproof, dustproof and splashproof capabilities of smart glasses and adapt to a variety of daily use scenarios.

[0015] In addition, when the sound-generating component with a piezoelectric film is placed near the ear on the temple of the glasses, directional sound generation can be achieved, so that the sound waves are concentrated and propagated towards the ear, thereby greatly reducing the sound diffusion to the outside world and improving the privacy of audio playback.

[0016] For further technical effects of other implementation methods of this application, please refer to the relevant descriptions in the specific embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a smart glasses provided in an embodiment of this application, showing a first configuration of the sound-emitting unit (receiving slot); Figure 2 This is a schematic diagram of a frame structure provided in an embodiment of this application. The frame can be assembled into... Figure 1 The temple of the smart glasses shown is located inside the receiving slot. Figure 3 for Figure 2 A schematic diagram of the frame from the bottom side, in which the piezoelectric film is transparent; Figure 4 for Figure 2 The exploded structural diagram of the frame shown is provided, in which the piezoelectric film is not shown as transparent in order to show the piezoelectric film. Figure 5 A block diagram illustrating a sound generation control system provided in an embodiment of this application; Figure 6 for Figure 5 A block diagram of a specific scheme of the sound generation control system shown. Figure 7 This is a schematic diagram of another smart glasses provided in an embodiment of this application, showing a second configuration of the sound-generating unit; Figure 8 This is a schematic diagram of another smart glasses provided in an embodiment of this application, showing a third configuration of the sound-generating unit; Figure 9 This is a schematic diagram of another smart glasses provided in an embodiment of this application, showing a fourth configuration of the sound-generating unit.

[0018] Figure label: 1. Smart Glasses 2 temples 3. Receiving tank 4. Sound-generating components 41 Frame 411 First wire guide hole 412 Second wire guide hole 42 Piezoelectric thin film 421 First Electrode 422 Second Electrode 43. Sound masking 431 Sound hole 5 Power Management Unit 6 motherboard units 61 Bluetooth Audio SoC 62 DSP 7 drive units 71 Boost Driver Circuit 8 sound units Detailed Implementation To make the objectives, solutions, and advantages of this application clearer, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the embodiments described below are only some embodiments of this application, and not all of them; other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the scope of protection of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0019] Currently, smart glasses generally use traditional dynamic speakers or dynamic bone conduction vibration motors to achieve audio output. This results in systemic technical defects or challenges for the overall smart glasses in terms of thinness, sealing, sound leakage control, and compact structure, making it difficult to meet the comprehensive requirements of smart glasses for ultra-thin temples, high-level protection, privacy and low sound leakage, and compact internal layout.

[0020] After comprehensive analysis, in-depth exploration, and comprehensive verification, the inventors of this application propose an innovative solution to specifically overcome the comprehensive problems encountered by existing smart glasses due to the use of complex audio output schemes, and to adapt to the development needs of smart glasses for lightweighting, precision, and multi-functionality.

[0021] Specifically, see Figure 1 and combined Figure 2 , Figure 3 and Figure 4 As shown, a smart glasses 1 according to an embodiment of this application includes a frame and temples 2 disposed on both sides of the frame. The smart glasses 1 may also include a power management unit 5, a motherboard unit 6, a drive unit 7, and a sound-generating unit 8.

[0022] The power management unit 5 is electrically connected (including signal and power supply connections) to the main board unit 6 and the drive unit 7. The power management unit 5 can provide power to the main board unit 6 and the drive unit 8. The sound-emitting unit 8 can include a sound-emitting component 4, which can be disposed on the temple 2 of the smart glasses 1 near the ear. The sound-emitting component 4 includes a piezoelectric film 42.

[0023] Electrical connections exist between the motherboard unit 6 and the driver unit 7, as well as between the driver unit 7 and the piezoelectric film 42. The motherboard unit 6 may employ a dedicated chip module to receive an audio stream from the intended audio source and process the received audio stream. This data processing may include decoding to restore the original audio signal (first audio signal), or further processing the original audio signal according to preset algorithms such as equalization, dynamic compression, and nonlinear correction to adapt to the control characteristics of the piezoelectric film, resulting in an optimized new audio signal. This new audio signal (second audio signal) is then sent to the driver unit 7 via an internally integrated digital audio interface. The driver unit 7 can generate a corresponding alternating voltage based on the audio signal (second audio signal) output from the motherboard unit 6, as needed to drive the piezoelectric film 42, and drive the piezoelectric film 42 to vibrate based on this alternating voltage, causing the piezoelectric film 42 to emit a sound corresponding to the audio source. In a specific implementation, one or more of the power management unit 5, the main board unit 6, and the drive unit 7 can be set inside the frame or temple 2 of the smart glasses 1. The output end of the drive unit 7 is connected to the first electrode 421 and the second electrode 422 of the piezoelectric film 42 through the output line.

[0024] The piezoelectric film 42 operates based on the inverse piezoelectric effect. By applying an alternating audio voltage signal to its two electrodes, the alternating electric field continuously changes the internal polarization state of the piezoelectric film 42, causing it to periodically expand, contract, bend, and vibrate, directly driving the surrounding air to vibrate and generate sound waves. During operation, when a user wants to listen to music on the smart glasses 1, they can obtain the audio stream of the corresponding song from an audio source device such as a smartphone or network server through the smart glasses 1, and perform corresponding audio processing and drive control to cause the piezoelectric film 42 near the ear on the temple 2 to vibrate and produce sound, thereby realizing the audio output of the corresponding song.

[0025] Compared with the prior art, the solution of the above embodiments of this application can achieve a variety of technical effects: First, the piezoelectric film generates extremely small vibration displacement during operation, generally at the micrometer level. The overall structure of the sound-generating unit, including the sound-generating component, does not require a large vibration space. Furthermore, the piezoelectric film 42 itself is thin and light. After the piezoelectric film is assembled on the temple 2, it hardly increases the volume and weight of the temple 2, which can meet the design requirements of further lightweighting and portability of smart glasses, while reducing the feeling of weight when wearing them. Second, the piezoelectric film has good plasticity and flexibility. It can be cut, bent and fitted according to the curvature, contour and shape of different styles of temples to adapt to various temple structures such as straight, curved and streamlined. Therefore, this solution has strong shape adaptability and high design freedom. Third, during operation, the overall vibration of the piezoelectric film 42 and the temple 2 is weak, and there is no obvious vibration or numbness, making it suitable for long-term wear. Fourth, compared with existing technologies, since the sound is generated by the vibration of the piezoelectric film itself, there is no need to open a sound outlet on the temple 2. The entire smart glasses 1 can be made into a fully enclosed structure (the lines and channels connecting to the external sound-generating component 4 can easily be made into a sealed structure), which can effectively improve the high-level protection capabilities of the smart glasses 1 in terms of waterproofing, dustproofing, and splash resistance, adapting to various daily usage scenarios. Fifth, when the sound-generating component 4 with the piezoelectric film 42 is placed near the ear on the temple 2, directional sound generation can be achieved, causing the sound waves to be concentrated and propagated towards the ear, thereby greatly reducing the sound diffusion to the outside world and improving the privacy of audio playback.

[0026] In specific implementation, the smart glasses 1 of the above embodiments can be further optimized or specified in at least one of the following ways: First, the sound-generating unit 8 can be implemented in different ways. For example, the sound-generating unit 8 can also include a receiving groove 3. The receiving groove 3 can be opened near the ear position of the temple 2. The sound-generating component 4 can be set in the receiving groove 3. In this way, the sound-generating unit 8 / sound-generating component 4 can be hidden and embedded in the temple 2, which will not take up too much space and will also facilitate the appearance design of the temple 2.

[0027] Based on this, combined Figure 1 and Figure 7 As shown, the receiving groove 3 / sound-emitting component 4 can be disposed on the outside of the temple 2, combined with Figure 8 As shown, the receiving groove 3 / sound-emitting component 4 can also be disposed on the inner side of the temple 2, combined with Figure 9 As shown, the receiving slot 3 / sound-generating component 4 can also be located on the bottom side of the temple 2. Therefore, this allows for flexible selection of the installation location during the design process of smart glasses, based on product appearance, structure, and acoustic requirements. This enables both non-concealed and concealed appearance designs, as well as optimized sound directionality to adapt to various product categories.

[0028] In addition, combined Figure 1 As shown, the shape of the groove opening of the receiving slot 3 or the exposed part of the sound-generating component 4 can be rectangular, combined with Figure 7 As shown, the shape of the groove opening of the receiving groove 3 or the exposed part of the sound-generating component 4 can be a gradually widening shape with long rounded corners, combined with... Figure 8 As shown, the shape of the groove opening of the receiving groove 3 or the exposed part of the sound-generating component 4 can be a long rounded rectangle. Of course, it is not limited to this in other embodiments. For example, it can also be teardrop-shaped, elliptical, etc.

[0029] In addition, in order to realize the circuit connection between the piezoelectric film 42 and the driving unit 7, a wire passage can be provided on the side wall of the receiving groove 3, and the output line of the driving unit 7 can be connected to the first electrode 421 and the second electrode 422 of the piezoelectric film 42 through the wire passage.

[0030] II. Combination Figure 2 , Figure 3 and Figure 4 As shown, the sound-generating component 4 may also include a frame 41, which may be disposed (e.g., fixedly installed or detachably fixedly installed) in the receiving groove 3. The piezoelectric film 42 is fixed in the frame 41, and the circumferential enclosure of the frame 41 and the inner bottom wall of the receiving groove 3 form a small cavity structure similar to a sound cavity. This facilitates the installation of the sound-generating component 4 and also facilitates the sound propagation effect after the piezoelectric film 42 vibrates.

[0031] In addition, in order to realize the circuit connection between the piezoelectric film 42 and the drive unit 7, in addition to the wire passage provided on the side wall of the receiving groove 3, wire holes can also be provided on the frame 41, such as the first wire hole 411 and the second wire hole 412. The output line of the drive unit 7 can be connected to the first electrode 421 and the second electrode 422 of the piezoelectric film 42 through the wire passage and the wire hole.

[0032] Furthermore, the sound-generating component 4 may also include a sound-transmitting cover 43, which can be placed on the opening side of the frame 41. This allows for an embedded, concealed, or semi-concealed design of the sound-generating component 4 on the temple 2 without affecting the sound propagation of the piezoelectric film 42. In a specific implementation, the sound-transmitting cover 43 can be a cover plate. To achieve the sound transmission effect, multiple sound outlet holes 431 can be provided on the cover plate, and the multiple sound outlet holes 431 can be evenly spaced.

[0033] III. Combination Figure 6 As shown, in a specific implementation, the motherboard unit 6 may include a Bluetooth audio SoC (System on Chip) and a DSP (Digital Signal Processing), and the drive unit 7 may adopt a boost drive circuit 71.

[0034] During operation, the Bluetooth audio SoC 61 receives the Bluetooth audio stream sent by the audio source device and outputs a digital audio signal (first audio signal) after decoding. Based on the driving control characteristics of the piezoelectric film 42, the DSP 62 further processes the first audio signal according to a predetermined algorithm or strategy, such as equalization and nonlinear predistortion, and generates a second audio signal (small amplitude audio voltage signal) suitable for control. The boost drive circuit 71 is used to boost the small amplitude second audio signal to an alternating high voltage (e.g., a typical value of 20V to 50V peak) sufficient to drive the piezoelectric film, and outputs the alternating voltage to drive and control the piezoelectric film 42 to work.

[0035] Understandably, the Bluetooth audio SoC61 can serve as the main processor for the smart glasses 1, reading and decoding audio files and converting them into signals required by the driving unit. Specifically, the functions of the Bluetooth audio SoC 61 can include: ① Establishing a wireless connection (protocol processing), where the Bluetooth RF and baseband sections in the SoC are responsible for pairing and connecting with the audio source device (such as a smartphone) and negotiating which audio codec format (e.g., SBC, AAC, LDAC, etc.) to use in order to establish a stable wireless audio transmission channel; ② Receiving and decoding the audio stream (data restoration), where the Bluetooth audio SoC 61 receives the audio stream (encoded audio data packets), decodes it, and restores the original digital audio signal (e.g., I2S or PCM format). At the same time, the phase-locked loop (PLL) and clock circuit inside the SoC can recover the clock signal synchronized with the audio (e.g., sampling rate 48kHz) to obtain a pure digital audio signal (e.g., 48kHz sampling rate, 16bit / 24bit precision PCM data); ③ Outputting the audio signal to subsequent circuits (signal distribution), where the Bluetooth audio SoC 61 outputs the decoded digital audio signal through its internal integrated digital audio interface (e.g., I2S bus) to output the audio source signal (first audio signal) required to drive the piezoelectric film 42.

[0036] Due to the inherent acoustic characteristics of piezoelectric films, such as uneven frequency response, static charge leakage, and limited vibration displacement, the matching small cavity may have resonance, acoustic impedance mismatch, high high-frequency loss, and weak low-frequency radiation capability. Directly using the restored audio signal (first audio signal) to drive and control the piezoelectric film to produce sound may result in problems such as uneven volume, distortion, incomplete high and low frequencies, and degraded sound quality. To address this, the first audio signal is optimized using a DSP. For example, the equalization process can correct frequency response defects by increasing the amplitude of severely attenuated low / high frequency bands, suppressing the resonant peaks of small cavities, smoothing out the overall frequency response curve, and making the loudness of different frequencies uniform, thus solving the problems of weak frequencies and harsh resonance in some frequency bands. The nonlinear predistortion processing mainly considers that the vibration amplitude of the piezoelectric film and the driving voltage are not linearly related, and nonlinear distortion is very likely to occur under large signals. The small cavity will also produce sound saturation distortion under high volume. Therefore, before controlling the vibration of the piezoelectric film to produce sound, a set of reverse nonlinear distortion is pre-superimposed so that the inherent distortion generated by the whole machine and the small cavity will cancel each other out with the predistortion, and finally output a pure and distortion-free sound wave.

[0037] In practice, the Bluetooth audio SoC61 and DSP62 can be implemented using different chips, or the DSP62 module can be integrated into the Bluetooth audio SoC61.

[0038] The boost drive circuit 71 amplifies the voltage, receiving a low-voltage audio signal (second audio signal), generating a high-voltage power rail using an internal boost converter, and then using the high-voltage power rail to amplify the low-voltage audio signal (second audio signal), outputting a boosted audio alternating voltage signal with the same waveform and frequency but with an amplitude amplified by tens of times. In specific implementations, the boost drive circuit 71 may perform functions such as power conversion and adaptation, signal amplification and output, control and protection, and auxiliary and optimization functions.

[0039] The power conversion and adaptation section may include: ① Low-voltage input and management, i.e., the power management unit 5 provides low-voltage input, such as a voltage range of 3V to 5.5V. The power management unit 5 is also responsible for the power supply strategy and timing of the entire circuit to ensure the stable operation of each module; ② DC-DC boost converter, used to boost the low voltage (such as 3.7V) to the high voltage (such as ±50V or even higher) to provide energy for the subsequent signal amplification. This part is usually implemented by built-in boost switches, power diodes and inductors; ③ High-voltage power rail, i.e., the high voltage generated after boosting serves as the high-voltage power rail of the power amplifier, which determines its maximum output capability.

[0040] The signal amplification and output section is used to achieve precise amplification of small signals and may include: ① Low-voltage signal input, receiving small-amplitude audio voltage signals (e.g., around 1Vrms) from the DSP; ② High-voltage power amplifier, which acts as a voltage amplifier and uses the high-voltage power rail generated by the preamplifier to amplify the input small signal into a high-voltage large signal to drive the piezoelectric film 42; In specific implementation, the high-voltage power amplifier may include a linear amplifier and a switching amplifier. The linear amplifier can be implemented by a high-voltage operational amplifier (such as PA85), and the switching amplifier can adopt a Class D amplifier topology; ③ High-voltage signal output, that is, the high-voltage AC signal output by the power amplifier is directly connected to the two electrodes of the piezoelectric film 42 to drive it to vibrate and produce sound.

[0041] The control and protection section is used to ensure the stable and reliable operation of the circuit, and may include: ① control module, which is responsible for receiving external commands, configuring gain, selecting working mode, etc.; ② gain adjustment, which controls the amplification factor of the amplifier by adjusting the feedback network; ③ protection circuit, including overcurrent protection, overtemperature protection and electrostatic discharge (ESD) protection, which can quickly cut off or limit the output when abnormal conditions occur to prevent damage to the chip and piezoelectric film 42.

[0042] The auxiliary and optimization section is used to improve performance and flexibility, and may include: ① a calibration module for fine-tuning the voltage to ensure output accuracy; ② a filter for filtering out power supply noise or high-frequency interference in the signal to ensure signal purity; ③ a charge discharge circuit, which can provide a fast discharge channel when the piezoelectric film 42 is a capacitive load and the voltage needs to be reduced quickly.

[0043] In summary, the boost drive circuit 72 amplifies the low-voltage small signal output by the DSP62 into a high-voltage large signal sufficient to drive the piezoelectric film 42, thereby meeting the drive control requirements of the piezoelectric film 42.

[0044] It should be noted that, in various embodiments of this application, the smart glasses 1 may have a sound-generating component 4 or a piezoelectric film 42 disposed at the ear position of only one temple 2, or it may have a sound-generating component 4 or a piezoelectric film 42 disposed at the ear positions of both temples 2, with the driving unit 7 simultaneously driving both sets of piezoelectric films to vibrate and generate sound. Furthermore, the specific implementations of other major components of the smart glasses 1, including the frame, temples 2, power management unit 5, signal transceiver unit, etc., can be found in the descriptions of related technologies and will not be elaborated upon here.

[0045] It should be noted that the smart glasses applicable to this application and its various embodiments may be smart audio glasses without a display or augmented reality (AR) glasses with display and audio functions. For detailed implementation schemes of smart glasses, please refer to the description of related technologies, which will not be elaborated here.

[0046] It should be noted that in the description of this application and its various embodiments, terms such as "top," "end," "bottom," "side," etc., indicating orientation or positional relationship, are general expressions based on the orientation or positional relationship shown in the drawings or under actual field conditions. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0047] In this application and its various embodiments, unless otherwise explicitly stated or affecting logical consistency, the terms "set," "install," "connect," "fix," etc., should be interpreted broadly. For example, where there is no conflict, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] The specific embodiments described above have provided a detailed explanation of the purpose, technical solutions, and beneficial effects of this application. It should be understood that the above descriptions are merely specific embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A smart pair of glasses, comprising a frame and temples, characterized in that, Also includes: The sound-generating unit includes a sound-generating component disposed near the ear on the temple of the glasses, the sound-generating component including a piezoelectric film; The motherboard unit is used to output audio signals based on the received audio stream; A driving unit is used to generate an alternating voltage according to the audio signal and drive the piezoelectric film; A power management unit is used to provide power to the motherboard unit and the drive unit.

2. The smart glasses as described in claim 1, characterized in that, The sound-generating unit also includes a receiving groove located near the ear on the temple of the glasses, and the sound-generating component is disposed within the receiving groove.

3. The smart glasses as described in claim 2, characterized in that, The groove shape of the receiving groove is one of the following: rectangular, teardrop-shaped, long rounded rectangle, long rounded tapering shape, and elliptical; and / or, the receiving groove is disposed on the inner side, outer side, or bottom side of the temple.

4. The smart glasses as described in claim 2, characterized in that, The driving unit is disposed inside the temple or the frame, and a wire passage is provided on the side wall of the receiving groove; the output line of the driving unit is connected to the first electrode and the second electrode of the piezoelectric film through the wire passage.

5. The smart glasses as described in claim 4, characterized in that, The sound-generating component also includes a frame, which is disposed within the receiving groove; the piezoelectric film is fixed within the frame.

6. The smart glasses as described in claim 5, characterized in that, The frame is provided with a wire hole; the output line of the drive unit is connected to the first electrode and the second electrode of the piezoelectric film through the wire channel and the wire hole.

7. The smart glasses as described in claim 5, characterized in that, The sound-generating component also includes a sound-transmitting cover, which is disposed on the opening side of the frame.

8. The smart glasses as described in claim 7, characterized in that, The sound-through cover is a cover plate, and the cover plate is provided with multiple sound outlet holes.

9. The smart glasses as described in any one of claims 1 to 8, characterized in that, The motherboard unit includes a Bluetooth audio SoC and a DSP; the Bluetooth audio SoC is used to receive Bluetooth audio streams and output a first audio signal after decoding; the DSP is used to receive the first audio signal, process it according to a preset algorithm, and output a second audio signal to the driver unit.

10. The smart glasses as described in claim 9, characterized in that, The driving unit is a boost driving unit, used to boost the voltage according to the second audio signal to output an alternating voltage to drive the piezoelectric film.

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