WO2021168780A1 - Écouteur et procédé de détection de la manière dont il est porté - Google Patents

Écouteur et procédé de détection de la manière dont il est porté Download PDF

Info

Publication number
WO2021168780A1
WO2021168780A1 PCT/CN2020/077150 CN2020077150W WO2021168780A1 WO 2021168780 A1 WO2021168780 A1 WO 2021168780A1 CN 2020077150 W CN2020077150 W CN 2020077150W WO 2021168780 A1 WO2021168780 A1 WO 2021168780A1
Authority
WO
WIPO (PCT)
Prior art keywords
ultrasonic wave
earphone
signal
ultrasonic
excitation
Prior art date
Application number
PCT/CN2020/077150
Other languages
English (en)
Chinese (zh)
Inventor
常静静
刘浩东
梅伟
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN202080001045.4A priority Critical patent/CN113574911B/zh
Priority to PCT/CN2020/077150 priority patent/WO2021168780A1/fr
Publication of WO2021168780A1 publication Critical patent/WO2021168780A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers

Definitions

  • the present invention relates to the field of electronic products, in particular to a headset and a method for detecting the wearing state thereof.
  • the detection of the wearing state of the headset has gradually become a standard feature of the headset, and the working mode of the headset can be automatically configured according to the wearing state of the headset. For example, when it is detected that the headset is in a non-wearing state, the audio output is automatically turned off, and when it is detected that the user is wearing the headset, the audio output is automatically turned on, saving the user's operation.
  • This function avoids users from frequently operating audio equipment and brings a user-friendly experience to users.
  • the main method of realizing earphone wearing detection is an optical detection scheme.
  • the optical detection scheme is to determine whether the earphone is in a wearing state by detecting whether the earphone area is blocked.
  • the ear-in area of the earphone is blocked by other light-shielding materials, it can also trigger the earphone to be in the wearing state, resulting in inaccurate detection of the wearing state of the earphone, which affects the user experience.
  • the embodiment of the present application provides an earphone and a method for detecting the wearing state thereof, which can improve the accuracy of detection when the earphone is used.
  • the first aspect of the embodiments of the present application provides a headset.
  • the headset includes an ultrasonic transceiver, which is used to transmit the first ultrasonic wave under the action of an excitation signal, and also includes a solid medium.
  • the solid medium may be the shell of the headset for conducting the first ultrasonic wave.
  • the ultrasonic transceiver is also used For receiving a second ultrasonic wave and converting the second ultrasonic wave into an electrical signal for output, the second ultrasonic wave is the ultrasonic wave after the first ultrasonic wave is conducted through the solid medium.
  • the earphone further includes an analysis element for receiving an ultrasonic transceiver The output electrical signal is processed and the electrical signal is processed to obtain signal change characteristics, and the wearing state of the earphone is determined by the signal change characteristics. It should be noted that the ultrasonic transceiver is set on a solid medium.
  • the wearing state of the earphone is determined through the signal change characteristics of the first ultrasonic wave, and is not affected by factors such as light-shielding materials, which improves the detection accuracy and improves the user experience.
  • the ultrasonic transceiver includes an excitation element and a detection element.
  • the excitation element is used to generate a first ultrasonic wave.
  • the element is used to receive the second ultrasonic wave and convert the second ultrasonic wave into an electrical signal for output.
  • the ultrasonic transceiver when the ultrasonic transceiver includes an excitation element and a detection element, the feasibility of the solution is improved.
  • the excitation element and the detection element are arranged on the same piezoelectric sheet, that is, the same pressure
  • One pair of electrodes can excite the piezoelectric sheet through the excitation signal to realize the function of the excitation element, and the other pair of electrodes can receive the second ultrasonic wave through the piezoelectric sheet to realize the function of the detection element. .
  • the space inside the earphone is saved.
  • grooves or protrusions are provided on the solid medium, and the ultrasonic transceiver The device is arranged in the groove area or the protrusion area, and when the ultrasonic transceiver generates the first ultrasonic wave, the first ultrasonic wave is conducted in the groove area or the protrusion area.
  • the ultrasonic transceiver is arranged in the groove area or the protrusion area, so that the first ultrasonic wave is conducted in the fixed area, which will make the signal of the first ultrasonic wave in the conduction process more concentrated. It can improve the accuracy of subsequent ultrasonic detection.
  • the excitation element and/or detection element is a circular piezoelectric sheet or Square piezoelectric film.
  • the excitation element or the detection element is a square piezoelectric sheet
  • the first ultrasonic wave generated by the excitation element can propagate along the horizontal direction of the square piezoelectric sheet, which makes the ultrasonic signal more concentrated and can improve subsequent Detect the accuracy of ultrasound.
  • the excitation element and/or the detection element are ceramic piezoelectric sheets.
  • the excitation element and/or the detection element are ceramic piezoelectric sheets
  • the feasibility of the solution is improved.
  • the excitation element and/or the detection element are interdigital transducers.
  • the excitation element and/or the detection element are interdigital transducers, the feasibility of the solution is improved.
  • the ultrasonic transceiver is specifically used to generate the first ultrasonic wave under the excitation of the ZC sequence signal
  • the detection element receives the second ultrasonic wave, converts the second ultrasonic wave into an electrical signal, and outputs it to the analysis element.
  • the analyzing element processes the electrical signal to obtain the amplitude corresponding to the electrical signal. When the amplitude corresponding to the electrical signal is lower than the preset threshold, it is determined that the headset is in the wearing state.
  • the ultrasonic transceiver generates the first ultrasonic wave under the excitation of the ZC sequence signal. Because the ZC sequence signal has good autocorrelation, the accuracy of determining the wearing state of the earphone can be improved in the subsequent processing.
  • the ultrasonic transceiver generates the first ultrasonic wave under the excitation of the pulse signal.
  • the detection element receives the second ultrasonic wave, converts the second ultrasonic wave into an electrical signal, and outputs it to the analysis element.
  • the analyzing element processes the electrical signal to obtain the attenuation rate corresponding to the electrical signal. When the attenuation rate corresponding to the electrical signal is greater than a preset threshold, it is determined that the headset is in a wearing state.
  • the wearing state of the earphone is determined by the attenuation rate corresponding to the electrical signal, which improves the feasibility of the solution.
  • the ultrasonic transceiver generates the first ultrasonic wave under excitation of a sinusoidal single-frequency signal.
  • the ultrasonic transceiver generates the first ultrasonic wave through the excitation of a sinusoidal single-frequency signal, which improves the feasibility of the solution.
  • the ultrasonic transceiver in the tenth implementation manner of the first aspect of the embodiments of the present application, the ultrasonic transceiver generates the first ultrasonic wave under the excitation of the chirp LFM signal.
  • the ultrasonic transceiver generates the first ultrasonic wave through the excitation of the chirp LFM signal, which improves the feasibility of the solution.
  • the first ultrasonic wave may specifically be a bulk wave, an interface wave, or a surface acoustic wave. Wave or board wave.
  • the second aspect of the embodiments of the present application provides a method for detecting the wearing state of a headset.
  • the earphone generates a first ultrasonic wave under the action of the excitation signal.
  • the first ultrasonic wave is conducted through the solid medium in the earphone.
  • the earphone receives the second ultrasonic wave and converts the second ultrasonic wave into an electrical signal.
  • the second ultrasonic wave is the first ultrasonic wave.
  • the earphone processes the electric signal after obtaining the electric signal to obtain the signal change characteristic, and the wearing state of the earphone is determined by the signal change characteristic.
  • the wearing state of the earphone is determined through the signal change characteristics of the first ultrasonic wave, and is not affected by factors such as light-shielding materials, which improves the detection accuracy and improves the user experience.
  • the embodiments of the present application have the following advantages: the first ultrasonic wave is sent through the excitation element of the earphone, and the signal change characteristics obtained by the processor processing the electrical signal converted by the first ultrasonic wave conducted by the solid medium are processed, In order to determine whether the headset is in a wearing state, it is not affected by factors such as shading materials, which improves the detection accuracy and enhances the user experience.
  • Figure 1 is a frame diagram of a headset provided by an embodiment of the application.
  • Figure 2a is a schematic structural diagram of a headset provided by an embodiment of the application.
  • FIG. 2b is a schematic diagram of another structure of a headset provided by an embodiment of the application.
  • FIG. 2c is a schematic diagram of another structure of a headset provided by an embodiment of the application.
  • FIG. 2d is a schematic diagram of another structure of a headset provided by an embodiment of the application.
  • FIG. 2e is a schematic diagram of another structure of a headset provided by an embodiment of the application.
  • FIG. 3 is a schematic diagram of signal change characteristics provided by an embodiment of this application.
  • FIG. 4 is another schematic diagram of signal change characteristics provided by an embodiment of this application.
  • FIG. 5 is a schematic flowchart of a method for detecting a wearing state of a headset provided by an embodiment of the application.
  • the embodiment of the present application provides an earphone and a method for detecting the wearing state thereof, which are used to determine whether the earphone is in the wearing state.
  • the headset 107 includes a power module 101, a microphone 102, a speaker 103, a communication module 104, a sensor 105, and a processor 106.
  • the power module 101 is electrically connected to the processor 106.
  • the microphone 102 and the speaker 103 can be connected to the processor.
  • the sensor 106 is electrically connected or connected to the processor 106 in a wireless manner. The details are not limited here.
  • the communication module 104 and the processor 106 are electrically connected, and the sensor 105 and the processor 106 are electrically connected.
  • the power module 101 is used to provide power to the earphone, and the microphone 102 is used to collect sound signals external to the earphone and transmit the sound signals to the processor. It is understandable that the microphone 102 may not be included in the actual application process. , The specifics are not limited here.
  • the speaker 103 is used to transmit the audio signal of the earphone, and the communication module 104 is used to establish a wireless connection with the terminal device.
  • the communication module 104 may include a wireless WiFi transmission module, or the communication module 104 may also include a Bluetooth module or an infrared transmission module. There is no limitation here.
  • the sensor 105 is used to detect the physical state of the headset or the connection state with the outside.
  • the sensor 105 may include an acceleration sensor, which is used to determine whether the headset is in a static state or a moving state, or the sensor 105 may also include an infrared sensor. , The specifics are not limited here.
  • the processor 106 is used to process the sound signal outside the earphone collected by the microphone 102, and convert the sound signal (analog signal) outside the earphone into a digital signal for subsequent audio processing, and then convert the digital signal into an analog signal.
  • the speaker 103 plays out, and the processor 106 can also be used to process the information collected by the communication module 104 or the sensor 105.
  • the headset may not include the sensor 105, which is not specifically limited here.
  • the ultrasonic transceiver in the embodiment of the present application may be separately provided in the earphone, or may also be integrated in the sensor 105, which is not specifically limited here.
  • the analysis element in the embodiment of the present application may be separately provided in the earphone or integrated in the processor 106, which is not specifically limited here.
  • the earphone frame described in this embodiment is only one of the embodiments of this application.
  • the earphone may also include more modules, for example, it may also include a display module for displaying the status of the earphone.
  • the information is not limited here.
  • the earphone in the embodiment of the present application will be further described below in conjunction with the earphone frame in FIG. 1.
  • Figure 2a is a schematic diagram of the structure of the headset provided in this application.
  • the earphone structure includes an earphone housing 201, a signal input section 202, an excitation device 203, a detection element 204, and a signal output section 205.
  • the excitation element 203 is preferably arranged on the inner wall of the earphone housing 201 in contact with the human ear, and the detection element 204 is preferably arranged on On the inner wall of the earphone housing 201, the excitation element 203 and the detection element 204 are arranged on the same side of the earphone housing 201, the signal input part 202 and the excitation element 203 are electrically connected, and the signal output part 205 and the detection element 204 are electrically connected.
  • the signal input unit 202 may be included in the audio channel of the earphone, or may be a separate component including the excitation circuit, which is not specifically limited here.
  • the signal input unit 202 is used for The digital signal sent by the processor is converted into an electrical signal for output.
  • the signal output unit 205 can be integrated on the analysis element, or it can be an element including a post-processing circuit. The specifics are not limited here.
  • the signal output unit 205 is used for Convert electrical signals into digital signals.
  • the signal input unit 202 sends an excitation signal to the excitation element 203, and the excitation element 203 correspondingly emits a first ultrasonic wave, which is transmitted in a solid medium. Therefore, in the following embodiments of the present application, the related ultrasonic waves are referred to as solid ultrasonic waves.
  • the first solid ultrasonic wave propagates through the earphone housing 201, and then the second solid ultrasonic wave propagating through the earphone housing 201 is received by the detection element 204.
  • the second solid ultrasonic wave is the amplitude when the first solid ultrasonic wave propagates on the surface of the earphone housing 201 And the solid ultrasonic wave whose shape changes.
  • the earphone housing 201 here serves as the transmission medium of the solid ultrasonic wave.
  • the detection element 204 After the detection element 204 receives the second solid ultrasonic wave, the detection element 204 converts the second solid ultrasonic wave into an electrical signal, and transmits the electrical signal to the analysis element through the signal output unit 205. After the analysis element receives the electrical signal, the analysis element processes the electrical signal to obtain signal change characteristics, and then the analysis element determines the wearing state of the earphone through the signal change characteristics.
  • the analysis element can optionally be the processor in FIG. 1, which is not limited in this embodiment.
  • the excitation element 203 and the detection element 204 can be integrated on the same device, such as a solid-state ultrasonic transceiver, as shown in Figure 2b, the solid-state ultrasonic transceiver can be placed on the same piezoelectric chip
  • the piezoelectric sheet is provided with two pairs of electrodes, one of which is used to excite the piezoelectric sheet through an excitation signal to generate a first solid ultrasonic wave, and the other pair of electrodes and the piezoelectric sheet form a function equivalent to a solid ultrasonic receiver
  • the device is used to receive the second solid ultrasonic wave propagated through the earphone housing 201, and convert the second solid ultrasonic wave into an electrical signal for transmission.
  • the embodiment of this application does not limit the specific forms of the excitation element 203 and the detection element 204, as long as The specific forms of the excitation element 203 and the detection element 204 can send solid ultrasonic waves and receive solid ultrasonic waves transmitted through the earphone housing 201. It can be understood that the excitation element 203 and the detection element 204 can be arranged separately, as shown in FIG. 2a.
  • the excitation element 203 and/or the detection element 204 can be a square piezoelectric sheet, or a circular piezoelectric sheet.
  • the excitation element 203 and/or the detection element 204 are In the case of a square piezoelectric plate, the solid ultrasonic wave generated by the excitation element 203 through the excitation signal can propagate along the direction of the expansion and contraction vibration of the square piezoelectric plate, which makes the solid ultrasonic signal more concentrated and can improve the accuracy of subsequent solid ultrasonic detection.
  • the signal input part 2104 sends an excitation signal to the excitation element 2101.
  • the excitation element 2101 continuously expands and contracts, that is, high-frequency vibration is generated.
  • the coming high-frequency mechanical deformation drives the mass points of the earphone shell 2103 to vibrate slightly, so ultrasonic waves are excited in the earphone shell 2103 and propagate in a certain direction on the earphone shell 2103.
  • the detection element 2102 will receive these solid ultrasonic waves and combine these solid ultrasonic waves.
  • the ultrasonic wave is converted into an electric signal, and then output by the signal output unit 2105.
  • the vibration system parameters of the solid ultrasonic wave on the conduction path change. Accordingly, the detection element 2102 converts the electric signal of the solid ultrasonic wave.
  • the signal will also change.
  • the analysis element receives the electrical signal, the signal change characteristics are extracted from the electrical signal to determine whether the headset is in the wearing state.
  • the excitation element 203 and/or the detection element 204 may be ceramic piezoelectric sheets. It is understood that, in actual applications, the excitation element 203 and/or the detection element 204 may also be other forms of elements. For example, it can also be a finger transducer, which is not specifically limited here.
  • the inner wall of the earphone housing 201 may also be provided with a groove, and the excitation element 203 and the detection element 204 are arranged in the area of the groove, as shown in FIG. 2d, when the excitation element 203 passes
  • the excitation signal generates solid ultrasonic waves
  • the solid ultrasonic waves can propagate in the groove area, making the solid ultrasonic signals more concentrated, which can improve the accuracy of subsequent solid ultrasonic detection.
  • other forms of excitation elements can also be used.
  • the propagation path of the solid ultrasonic wave generated by 203 is changed to a certain extent.
  • a protrusion is provided on the inner wall of the earphone housing 201, as shown in FIG. 2e, which is not specifically limited here.
  • the excitation signal sent by the signal input unit 202 to the excitation element 203 is a ZC sequence signal.
  • the excitation element 203 emits a first solid ultrasonic wave under excitation, and the first solid ultrasonic wave is conducted on the inner wall of the earphone housing 201 , And the detection element 204 receives the conducted second solid ultrasonic wave.
  • the first solid ultrasonic wave After the first solid ultrasonic wave is emitted, there are multiple solid ultrasonic modes in the transmission of the earphone shell 201.
  • the conduction speeds of the multiple solid ultrasonic modes in the earphone shell 201 are different, and the different modes are different.
  • the solid ultrasonic waves gradually separate from each other in the conduction path, and the solid ultrasonic waves of multiple modes reach the detection device successively.
  • the solid ultrasonic waves are reflected at some boundaries of the earphone shell 201 to form an echo signal, that is, the second solid Ultrasound includes solid ultrasonic and echo signals of multiple modes.
  • the solid ultrasonic signals and echo signals of multiple modes are superimposed on the detection element 204.
  • the analysis element when it performs pulse compression processing on the second solid ultrasonic, it will get A waveform with multiple peak points, such as the waveform 301 in Figure 3, the abscissa in Figure 3 represents the time when the detecting element 204 receives the second solid ultrasonic wave, and the ordinate represents the intensity of the second solid ultrasonic wave received by the detecting element 204 .
  • the human body can be equivalent to a spring-damping material.
  • the amplitude of the output electrical signal of the detection element will decrease, and the waveform of 302 It is shown as the result of pulse compression processing of the output electrical signal of the detection element after the earphone shell 201 is in contact with the human body. That is, when the earphone shell 201 is in contact with the human body, the amplitude of each peak of the 302 waveform is relative to the amplitude of each peak of the 301 waveform. If the amplitude drops overall, it is determined that the earphone housing 201 is in contact with the human body.
  • the integral of the pulse compression curve on the horizontal axis in Figure 3 can be calculated, and then the maximum value of the entire pulse compression curve can be obtained.
  • the pulse compression curve is integrated on the horizontal axis in Figure 3
  • the maximum value of the pulse compression curve and the pulse compression curve are smaller than different preset thresholds, it is determined that the earphone housing 201 is in contact with the human body.
  • the excitation element 203 can also be excited by other signals to emit the first solid ultrasonic wave.
  • the signal input unit 202 uses a pulse signal to excite the excitation element 203 to generate the first solid ultrasonic wave.
  • the ultrasonic wave is conducted through the earphone housing 201, and the vibration amplitude gradually attenuates.
  • the graph 401 shows the amplitude change without contact with the human body
  • the graph 402 shows the amplitude change with the human body.
  • the attenuation rate k of solid ultrasonic waves can be calculated by the following formula:
  • the excitation element 203 can also be excited by other signals, such as a sinusoidal single-frequency signal, a chirp LFM signal, and the details are not limited here.
  • the solid ultrasonic waves excited by the excitation element 203 may be bulk waves, interface waves, or other forms of waveforms, such as surface acoustic waves or plate waves, which are not specifically limited here.
  • processing algorithm for the electrical signal by the analysis element includes but is not limited to the Fourier transform algorithm and the cross-correlation processing method, which is not specifically limited here.
  • one or more excitation devices 203 may be present in one earphone housing 201, or one or more detection elements 204 may be present, which is not specifically limited here.
  • the signal change characteristics of the second solid ultrasonic wave transmitted through the earphone housing 201 relative to the first solid ultrasonic wave emitted by the excitation element 203 are used to determine the wearing state of the earphone, which is not affected by factors such as shading materials, and improves the user Experience.
  • FIG. 5 is a schematic flowchart of an embodiment of a method for detecting a wearing state of a headset provided by this application.
  • the headset generates a first ultrasonic wave.
  • the earphone generates a first solid ultrasonic wave under the excitation of the excitation element in the earphone by the excitation signal, and the first solid ultrasonic wave is conducted along the outer shell of the earphone.
  • the excitation signal may be a ZC sequence signal, a sinusoidal single-frequency signal, or other types of excitation signals, such as a chirp LFM signal, which is not specifically limited here.
  • the form of the first solid ultrasonic wave may be a bulk wave, a boundary wave, or other forms of waveform, such as a surface acoustic wave or a plate wave, which is not specifically limited here.
  • the earphone receives the second ultrasonic wave. After the earphone generates the first solid ultrasonic wave, the first solid ultrasonic wave is conducted along the outer shell of the earphone, and the detection element of the earphone receives the first solid ultrasonic wave, that is, the second solid ultrasonic wave after being conducted through the outer shell of the earphone.
  • the second solid ultrasonic wave also includes solid ultrasonic waves and echo signals in multiple modes.
  • the earphone converts the second ultrasonic wave into an electrical signal. After receiving the second solid ultrasonic wave, the earphone converts the second solid ultrasonic signal into an electrical signal.
  • the earphone Process the electrical signal to obtain signal change characteristics. After the earphone converts the second solid ultrasonic signal into an electric signal, the earphone processes the electric signal to obtain signal change characteristics.
  • the earphone can convert the electrical signal into a digital signal that can be processed, and then perform pulse compression processing on the digital signal.
  • the earphone emits the first solid ultrasonic wave under the excitation of the excitation signal
  • various multi-mode ultrasonic waves and echoes will be generated. Therefore,
  • the detection element of the earphone will receive various multi-mode ultrasonic waves and echoes, and then the output electrical signals include the electrical signals corresponding to these various modal ultrasonic waves and echoes, and the output electrical signals are converted into
  • a waveform with multiple peak points will be obtained.
  • the abscissa of the peak point represents the time when the second solid ultrasonic wave is received, and the ordinate represents the intensity of the received second solid ultrasonic wave.
  • the waveform of multiple peak points is the characteristic of signal change.
  • the change characteristic of the vibration amplitude may be obtained by processing the output electrical signal, that is, the change characteristic of the vibration amplitude is a signal change characteristic. It is understandable that the output electrical signal can also be processed in other ways, such as Fourier transform algorithm, cross-correlation processing method, etc., which are not specifically limited here.
  • the wearing state of the headset is determined according to the signal change characteristic, that is, it is determined whether the earphone is in contact with a person.
  • the human body when the signal change characteristic is the waveform of multiple peak points, the human body can be equivalent to a spring-damping material.
  • the first solid ultrasonic wave is emitted. Therefore, during the time period when the human body is in contact with the ear-in area of the earphone shell, the vibration system parameters of various modes of ultrasonic and echo change, which can be regarded as the human body has absorbed the solid ultrasonic wave of the earphone shell.
  • the resulting solid vibration correspondingly, the amplitude of the output electrical signal will decrease, that is, the amplitude corresponding to the peak point will decrease overall, and when the amplitude is lower than the preset threshold, it is determined that the earphone is in contact with the human body.
  • the signal change feature is a vibration amplitude
  • the attenuation rate of the vibration amplitude is less than a preset threshold, it is determined that the earphone is in a wearing state.
  • the peak point of the signal is F max
  • the corresponding time point is t max .
  • the amplitude is less than F g , it is considered that the vibration in the shell has been attenuated to zero, and the corresponding The time point is t g , then the attenuation rate k of the vibration amplitude can be calculated by the following formula:
  • the attenuation slope k of the signal period received by the analysis element in the earphone is greater than the preset threshold, it is determined that the earphone is in the wearing state.
  • the wearing state of the earphone can also be determined by the signal change characteristics obtained by other algorithms, which is not specifically limited here.
  • the processor mentioned in the headset in the above embodiments of this application may include a central processing unit (CPU), or may also be other general-purpose processors, Digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices , Discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the above processor may be located in a chip for performing various signal processing and analysis mentioned in the previous embodiments.
  • the number of processors in the headset in the above embodiments of the present application may be one or more, and may be adjusted according to actual application scenarios. This is only an exemplary description and is not limited.
  • the number of memories in the embodiment of the present application may be one or multiple, and may be adjusted according to actual application scenarios. This is only an exemplary description and is not limited.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)

Abstract

Les modes de réalisation de la présente invention concernent un écouteur et un procédé de détection de la manière dont il est porté, qui sont utilisés dans un environnement où un écouteur est utilisé. L'écouteur selon les modes de réalisation de la présente invention comprend : un émetteur-récepteur ultrasonore, configuré pour générer une première onde ultrasonore, recevoir une seconde onde ultrasonore, et convertir la seconde onde ultrasonore en un signal électrique ; un milieu solide, configuré pour amener la première onde ultrasonore à former la seconde onde ultrasonore, l'émetteur-récepteur ultrasonore étant disposé sur le milieu solide ; et un élément d'analyse, configuré pour recevoir le signal électrique, et traiter le signal électrique pour déterminer la manière dont l'écouteur est porté. Dans les modes de réalisation de la présente demande, la manière dont un écouteur est porté est déterminé au moyen d'une caractéristique de changement de signal d'une première onde ultrasonore, sans être affecté par des facteurs tels qu'un matériau de protection contre la lumière, améliorant ainsi l'expérience de l'utilisateur.
PCT/CN2020/077150 2020-02-28 2020-02-28 Écouteur et procédé de détection de la manière dont il est porté WO2021168780A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202080001045.4A CN113574911B (zh) 2020-02-28 2020-02-28 一种耳机及其佩戴状态的检测方法
PCT/CN2020/077150 WO2021168780A1 (fr) 2020-02-28 2020-02-28 Écouteur et procédé de détection de la manière dont il est porté

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/077150 WO2021168780A1 (fr) 2020-02-28 2020-02-28 Écouteur et procédé de détection de la manière dont il est porté

Publications (1)

Publication Number Publication Date
WO2021168780A1 true WO2021168780A1 (fr) 2021-09-02

Family

ID=77489746

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/077150 WO2021168780A1 (fr) 2020-02-28 2020-02-28 Écouteur et procédé de détection de la manière dont il est porté

Country Status (2)

Country Link
CN (1) CN113574911B (fr)
WO (1) WO2021168780A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108600875A (zh) * 2018-04-18 2018-09-28 深圳市睿冠科技有限公司 一种集成测距功能的扬声器
CN108737921A (zh) * 2018-04-28 2018-11-02 维沃移动通信有限公司 一种播放控制方法、系统、耳机和移动终端
US20190018123A1 (en) * 2017-07-17 2019-01-17 Invensense, Inc. Defective ultrasonic transducer detection in an ultrasonic sensor
CN110177326A (zh) * 2018-02-17 2019-08-27 苹果公司 超声接近传感器以及相关系统和方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190018123A1 (en) * 2017-07-17 2019-01-17 Invensense, Inc. Defective ultrasonic transducer detection in an ultrasonic sensor
CN110177326A (zh) * 2018-02-17 2019-08-27 苹果公司 超声接近传感器以及相关系统和方法
CN108600875A (zh) * 2018-04-18 2018-09-28 深圳市睿冠科技有限公司 一种集成测距功能的扬声器
CN108737921A (zh) * 2018-04-28 2018-11-02 维沃移动通信有限公司 一种播放控制方法、系统、耳机和移动终端

Also Published As

Publication number Publication date
CN113574911B (zh) 2022-10-18
CN113574911A (zh) 2021-10-29

Similar Documents

Publication Publication Date Title
US9674625B2 (en) Passive proximity detection
US8519982B2 (en) Active acoustic touch location for electronic devices
CN103344959B (zh) 一种超声定位系统和具有定位功能的电子装置
JP5643191B2 (ja) 超音波探触子及び超音波撮像装置
JP2005351897A (ja) パラメトリックアレイを用いた空気中の超音波距離測定装置及びその方法
JP2013123605A (ja) 超音波診断装置及び超音波診断装置の制御方法
EP4352545A1 (fr) Détection de proximité
CN108200265B (zh) 基于姿态识别的手机控制平台
CN114111927B (zh) 一种适用于气体流量检测的高频超声波传感器
Przybyla et al. Mass produced micromachined ultrasonic time-of-flight sensors operating in different frequency bands
WO2021168780A1 (fr) Écouteur et procédé de détection de la manière dont il est porté
US20190000392A1 (en) Electronic Blood Pressure Monitor, Blood Pressure Measuring Method, and Electronic Stethoscope
US6366675B1 (en) Sound pressure detecting system
CN113115148B (zh) 一种耳机及入耳检测方法、装置
CN212540713U (zh) 一种用于测距的mems麦克风系统
KR20150059982A (ko) 차량용 초음파 센서의 감지 거리 증가 장치 및 그 동작 방법
TWI644118B (zh) 超音波元件
JP2019080248A (ja) 超音波デバイス、及び超音波測定装置
CN113542961A (zh) 耳机、电子设备和入耳检测方法
Gürkan et al. Design of a broadband semi-conical PVDF ultrasonic sensor for obstacle detection applications
JP2017003318A (ja) 温度センサ
WO2022030251A1 (fr) Dispositif de mesure de temps de propagation
KR101511099B1 (ko) 스마트폰에 사용 가능한 태아심음측정 트랜스듀서
US20230408663A1 (en) Ultrasonic transducer system and method for manufacturing the same
WO2021084836A1 (fr) Dispositif à ultrasons

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20921828

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20921828

Country of ref document: EP

Kind code of ref document: A1