Abstract: The present disclosure provides a microphone, comprising a vibration pickup assembly configured to generate vibration; at least two acoustoelectric conversion elements configured to respectively receive the vibration of the vibration pickup assembly to generate an electrical signal; at least one sampling module configured to convert electrical signals output by different acoustoelectric conversion elements of the at least two acoustoelectric conversion elements into digital signals, wherein, each of the at least two acoustoelectric conversion element has a resonant frequency, and a difference between resonant frequencies of two of the at least two acoustoelectric conversion elements is greater than 1000 Hz.

Abstract: This specification provides methods, computer-readable media, and apparatuses for signature authentication. A server performs signature authentication on a terminal device. A service private key required for signature authentication is embedded in a trusted execution environment (TEE) of the terminal device. The TEE verifies a biological feature entered by a user, and after verification succeeds, the TEE completes a signature required by a signature authentication request.

Abstract: Embodiments of this specification provide signature authentication methods and apparatuses. A service private key for signature authentication is embedded in a trusted execution environment (TEE) of a terminal device in which a client device is located. In an implementation, a method includes the following. The client device sends a signature authentication request to a server. The client device receives authentication data information sent from the server. The client device encrypts the authentication data information by using a key that is pre-synchronized with the TEE. The client device sends encrypted authentication data information to the TEE. The client device then receives the signature data sent from the TEE and sends the signature data to the server.

Abstract: The present disclosure discloses an acoustic device and a support assembly. The support assembly may include a shell configured to provide a space for accommodating one or more components of the acoustic device. The support assembly may further include an interaction assembly configured to realize an interaction between a user and the acoustic device, wherein the interaction assembly include a first component and one or more second components, in response to receiving an operation of the user, the first component is configured to trigger at least one of the one or more second components to cause the acoustic device to perform a function corresponding to the at least one of the one or more second components.

Abstract: Disclosed is an earphone including: two speaker assemblies, a connection member, and a processing circuit. The connection member is configured to connect the two speaker assemblies, and the connection member provides, through a bending deformation, a clamping force for placing the two speaker assemblies on a head of a user, and the connection member includes a housing with an accommodation cavity. A bending sensor is disposed in the accommodating cavity, and the bending sensor is configured to generate a bending signal based on a bending state of the connection member. The processing circuit is configured to determine a placement state of the earphone based on the bending signal. The placement state includes one of a normal wearing state, an abnormal wearing state, or a free placement state.

Abstract: The embodiments of the present disclosure provide a touch sensor device. The touch sensor device comprises a housing, configured to provide a touch region; and at least one sensor, configured to be fixed near the touch region. The at least one sensor includes: a signal transmitting unit, configured to generate a vibration signal under the action of an excitation signal; a signal receiving unit, configured to receive the vibration signal and generate an output signal; and a processor, configured to recognize a touch operation performed on the touch region according to the output signal.

Abstract: Disclosed is an earphone comprising two speaker assemblies and a connection member. The connection member is used to connect the two speaker assemblies. The connection member provides a clamping force for placing the two speaker assemblies at a user's head through a bending deformation. The connection member includes a housing with an accommodation cavity, a capacitance sensor is disposed in the accommodation cavity, and the capacitance sensor is configured to identify a bending state of the connection member. The capacitance sensor includes a shielding structure that has a constant potential and is used to reduce an effect of an external electric field on the capacitance sensor.

Abstract: Embodiments of the present disclosure provide an acoustic output device, comprising: an acoustic output unit, a contact detection sensor, and a processor. The acoustic output unit includes a vibration unit and a casing, the casing at least including a contact region which is in contact with the face of a user; the contact detection sensor is located at the contact region; and the processor is configured to determine whether the user wears the acoustic output device based on an electrical signal generated when the contact detection sensor is in contact with the face of the user.

Abstract: Provide a sensing device comprising a cavity and an air pressure sensor disposed within the cavity. The cavity includes two elastic walls disposed opposite to each other and a rigid wall connecting the two elastic walls, wherein the rigid wall is in a form of a tubular structure, and the two elastic walls are configured to seal the tubular structure to form the cavity. A deformation of the two elastic walls changes air pressure within the cavity, and the air pressure sensor is configured to generate an electrical signal in response to the change of the air pressure.

Abstract: The embodiments of the present disclosure provide a sensor device. The sensor device comprises a sensitive element and a substrate. The substrate is configured to carry the sensitive element. The sensitive element includes a first conductive layer and a sensitive layer. The first conductive layer includes at least two conductive units. The at least two conductive units are arranged in a distributed manner. At least a portion of the sensitive layer is disposed between and in contact with the at least two conductive units. A resistance value of the sensitive element changes in response to bending of the sensor device.

Abstract: A strain sensor comprising a substrate is provided. The substrate is provided with a groove structure. An electrically conductive film is affixed to a surface of the substrate, and a crack is provided at a position of the electrically conductive film corresponding to the groove structure.

Abstract: The embodiments of the present disclosure provide a conductive structure and a flexible sensor having the same. The conductive structure comprises a substrate, including an accommodation groove; a solid conductor, at least partially accommodated in the accommodation groove, the solid conductor and the accommodation groove forming a first accommodation region; and a fluid conductor, filled in the first accommodation region and extending outside the accommodation groove, a projection of a contact region between the fluid conductor and the solid conductor along a depth direction of the accommodation groove and a projection of the solid conductor along the depth direction having an overlapping region. The flexible sensor comprises at least one sensing structure. Each sensing structure includes two electrode plates; and a dielectric flexible body. The flexible sensor further comprises a processor. Each of the two electrodes includes the conductive structure.

Abstract: An acoustic output device is provided. The acoustic output device includes a sound generation component, a support member, and a sensor. The sound generation component is configured to accommodate a sound generation unit that produces sound. The support member is configured to dispose the sound generation component near an ear without blocking an earhole. The sensor includes at least one ultrasonic transducer disposed inside the sound generation component. The sensor is configured to transmit a first ultrasonic signal to an outside of the sound generation component through the at least one ultrasonic transducer. The transducer is further configured to detect the second ultrasonic signal through the at least one ultrasonic transducer and determine a wearing state of the acoustic output device based on the detection. The second ultrasonic signal includes the first ultrasonic signal or a reflection signal of the first ultrasonic signal.

Abstract: The embodiments of the present disclosure disclose a system and method. The system may include at least one storage device configured to storage computer instruction; and at least one processor, in communication with the storage device. When executing the computer instructions, the at least one processor is configured to direct the system to perform operations including: obtaining a sensing signal of at least one sensing device; identifying a signal feature of the sensing signal; and determining, based on the signal feature, an operation of a target object associated with the at least one sensing device.

Abstract: The present application discloses a preparation method of SM non-woven fabrics for roof anti-slip, which belongs to the technical field of roofing materials, comprising preparing spunbond non-woven fabric raw materials, preparing spunbond non-woven fabrics, preparing meltblown non-woven fabric raw materials, preparing primary SM non-woven fabrics, and post-processing; the spunbond non-woven fabric raw materials are prepared by uniformly mixing polypropylene with a low melt flow index, polypropylene with a high melt flow index, sodium alginate, antioxidant 1010, zinc stearate, ultraviolet absorber UV-531, polyvinyl alcohol, reinforcing agent, adhesive agent, and nano titanium dioxide. The present application can avoid the problem that the SM non-woven fabrics cannot be fully bonded together and are easy to delaminate when being combined, can also solve the problem of fabric breakage during high-speed production, and can also improve the wear resistance, strength, and stiffness of SM non-woven fabrics.

Abstract: The present disclosure provides a microphone including at least one acoustoelectric transducer and an acoustic structure. The acoustoelectric transducer is configured to convert a sound signal to an electrical signal. The acoustic structure includes a sound guiding tube and an acoustic cavity. The acoustic cavity is in acoustic communication with the acoustoelectric transducer, and is in acoustic communication with outside of the microphone through the sound guiding tube. The acoustic structure has a first resonance frequency, the acoustoelectric transducer has a second resonance frequency, and an absolute value of a difference between the first resonance frequency and the second resonance frequency is not less than 100 Hz. By disposing different acoustic structures, resonance peaks in different frequency ranges may be added to the microphone, which improves a sensitivity of the microphone near multiple resonance peaks, thereby improving a sensitivity of the microphone in the entire wide frequency band.

Abstract: An autonomous vehicle includes a detection system for identifying the presence changes in wind incident on the autonomous vehicle, particularly wind gusts. The detection system may include one or more wind sensors, particularly those configured to detect wind incident on the vehicle from a direction that is transverse or perpendicular to the direction of motion of the autonomous vehicle. Additionally, systems may be present that correlate the detected wind gusts to changes in the behavior of the autonomous vehicle. The autonomous vehicle may react to the detected wind gusts by altering the vehicle's trajectory, by stopping the vehicle, or by communicating with a control center for further instructions.

Abstract: The present disclosure may provide a microphone. The microphone may include: a shell structure and a vibration pickup portion, wherein the vibration pickup portion may generate vibration in response to vibration of the shell structure; the vibration transmission portion may be configured to transmit the vibration generated by the vibration pickup portion; and an acoustic-electric conversion component configured to receive the vibration transmitted by the vibration transmission portion to generate an electrical signal, wherein the vibration transmission portion and at least a portion of vibration pickup portion may form a vacuum cavity, and the acoustic-electric conversion component may be located in the vacuum cavity.

Abstract: An acoustic output device is provided. The acoustic output device may include an acoustic output unit and an ear hook, wherein the ear hook may suspend the acoustic output unit near an ear of a user, and the ear hook may be provided with a volume-deformable flexible sealed cavity configured to detect a pressure exerted on the ear hook when the user wears the acoustic output device.

Abstract: A sensing device may be provided. The sensing device may include a flexible sealing structure and a pressure sensing unit. The flexible sealing structure is provided at a joint of a user, and the flexible sealing structure is filled with fluid inside. The pressure sensing unit is in fluid communication with the flexible sealing structure. A pressure of the fluid inside the flexible sealing structure changes in response to a deformation of the joint of the user, and the pressure sensing unit converts a change in the pressure of the fluid into an electrical signal.