207results about "Transducers for subaqueous use" patented technology

An image capture device includes a housing that defines a cavity and an aperture positioned within the cavity and an audio device disposed within the housing at a location of the aperture. The image capture device includes stanchions that extend outward from the cavity and a cover coupled to the stanchions. The cover is free of contact with the housing.

The invention discloses a cross-medium wearable audio transmission system and a transmission method thereof, which are suitable for audio communication scenes in an air and water body junction environment such as a natatorium. The system comprises a shore transmitting terminal and an underwater receiving earphone, and adopts a blue-green light wave band as a transmission carrier to realize cross-medium wireless transmission of audio signals. The transmitting terminal comprises an audio preprocessing module, a modulation and driving module and a coarse-fine composite light beam alignment module; the receiving earphone comprises an optical receiving module, a posture sensing and aligning module, a signal processing module and a bone conduction audio output unit. According to the system, through a dynamic attitude compensation and light beam alignment mechanism, the audio transmission rate greater than or equal to 1Mbps in a 10-meter range is realized, the error rate is less than or equal to 1 * 10 <-6 >, and the transmission delay is less than 50ms. The method has the advantages of high communication quality, strong anti-interference capability, good wearable performance and the like, and is suitable for scenes of underwater training, voice guidance, immersive audio playing and the like.

The invention provides a resonant bionic cilia vector hydrophone based on a quartz tuning fork and an underwater acoustic system, and relates to the technical field of micro-mechanical electronics. A vibration detection mechanism in the hydrophone comprises two quartz tuning forks located in a first axial direction and two quartz tuning forks located in a second axial direction, the first axial direction is perpendicular to the second axial direction, one end of each quartz tuning fork is fixed, and the other end of each quartz tuning fork is connected with a vibration acquisition mechanism; and the vibration acquisition mechanism is connected with the quartz tuning forks and is used for driving the two quartz tuning forks in the same axial direction to generate symmetrical frequency deviation under the action of sound waves. According to the embodiment of the invention, the excellent frequency stability and strain sensitivity of the double-end fixed tuning fork can be utilized to realize efficient conversion of sound signals and generation of corresponding electric signals, digital signal output can be conveniently realized, high-sensitivity detection of the sound signals can be effectively realized, the influence of common-mode signals can be inhibited, the anti-interference performance is good, and the detection precision is high. And the underwater sound detection effect is greatly improved.

An acoustic device is provided. The acoustic device comprises a housing, a waterproof assembly, an acoustic assembly, and a sealing member. The housing includes an accommodation cavity provided with a first sound transmission hole. The waterproof assembly is within and in sealed connection with the accommodation cavity, and covers the first sound transmission hole to prevent liquid from contacting an acoustic sensor. The acoustic assembly includes the acoustic sensor, the acoustic assembly being disposed on a side of the waterproof assembly away from the first sound transmission hole and in sealed connection with the waterproof assembly, and a first gap being formed between the acoustic assembly and the accommodation cavity. The sealing member seals the first gap to fix the acoustic assembly and prevent the liquid from entering an interior space of the housing through the first gap.

The invention relates to an underwater acoustic transducer which can resist long-term work under the condition of deep sea high water pressure, is high in sensitivity, wide in band, low in noise and high in electromagnetic interference resistance, is used in deep sea detection and communication sonar systems, and solves the problems that an existing underwater acoustic transducer is low in receiving sensitivity along with increase of water pressure, poor in long-term work corrosion resistance and low in cost. And noise of the hydrophone and external electromagnetic interference cause signal interference. A novel high polymer material is adopted to reduce acoustic impedance, enhance the coupling effect with seawater and reduce sound wave reflection loss. Meanwhile, by optimizing the internal structure design, the stability and durability of the device under the deep sea high pressure condition are ensured. And the hydrophone shell is made of an alloy material with good corrosion resistance, so that the hydrophone shell is prevented from being corroded in a marine environment for a long time, and the service life is prolonged. By improving the design and manufacturing process of the transducer, the transducer can cover acoustic signals in a broadband range, and the multi-spectrum requirement of a deep sea detection and communication system is met. Advanced noise suppression technology and shielding measures are adopted, noise of the hydrophone is effectively reduced, external electromagnetic interference resistance is improved, and it is guaranteed that high-quality acoustic data are obtained in a complex deep sea environment. In conclusion, the invention provides the hydrophone which is excellent in working performance in the deep sea high-pressure environment, has the characteristics of high sensitivity, broadband response and the like, can effectively resist the influence of a severe environment, and provides key technical support for deep sea detection and a communication sonar system.

The utility model relates to a high-frequency transmitting transducer capable of measuring internal temperature in real time. The high-frequency transmitting transducer comprises a ceramic shell platinum resistor and a longitudinal oscillator, the ceramic shell platinum resistor is arranged at the central position of the high-frequency transmitting transducer planar array, the whole longitudinal vibrator is trumpet-shaped, and the center of a gap space between trumpets is also the central position of the high-frequency transmitting transducer; the number of the ceramic shell platinum resistors is one, specifically, the ceramic shell platinum resistors are arranged behind the front cover plate at one end of the longitudinal vibrator in the center position and in the gap between the piezoelectric ceramics, epoxy resin or 2401 instant adhesive is used for fixing every two ceramic shell platinum resistors, and the other end of the piezoelectric ceramics is further provided with a rear cover plate. According to the high-frequency transmitting transducer, the ceramic shell platinum resistor is placed in the gap between the longitudinal vibrators without changing the original structure of the transducer, and the internal temperature of the transducer is tested in real time by leading the internal core wire of the watertight cable of the transducer to the dry end.

The resonator array panel includes a perforated first sheet, a second sheet, and a resonator core. The perforated first sheet includes a first sheet body. The second sheet includes a second sheet body. The second sheet body includes a second outer surface and a second inner surface. The first resonator core is disposed between the perforated first sheet and the second sheet. The first resonator core includes a first plurality of sidewalls. The first plurality of sidewalls form a first plurality of resonators between the perforated first sheet and the second sheet. The first plurality of resonators includes a first resonator. The first resonator includes a first viscoelastic body disposed within a first resonator cavity.

This invention provides a waterproof microphone and electronic device. The waterproof microphone includes a first substrate, a sound hole disposed on the first substrate, and a waterproof component disposed on the outside of the first substrate. The waterproof component includes a supporting base, a rigid sheet disposed on the supporting base, and a waterproof membrane located on the side of the rigid sheet closer to the first substrate. The supporting base is disposed on the first substrate such that the rigid sheet and the waterproof membrane cover the area where the sound hole is located. This invention improves the waterproof performance of the waterproof microphone.

An ultrasonic liquid level sensor probe using a piezoelectric plate FPC module which has a simple configuration, is small and easy to handle, requires no wiring of lead wires, and is easily assembled into a probe. For the piezoelectric plate FPC module, there are a single-sided arrangement, in which an FPC is bonded to one-side surfaces of two or more piezoelectric plates, and a double-sided arrangement, in which two or more piezoelectric plates are sandwiched between two FPCs that are an FPC for individual electrodes and an FPC for a common electrode. The ultrasonic liquid level sensor probe has the piezoelectric plate FPC module stored in a double pipe serving as an insertion portion of the ultrasonic liquid level sensor probe.

The invention discloses a curved disc transducer with a concave boundary for a linear array, and belongs to the technical field of underwater acoustic engineering and electroacoustic conversion. The transducer comprises piezoelectric ceramics and a metal shell, and the core of the transducer is that a plurality of smooth transition concave structures are arranged on the circumferential boundary of the metal shell. And the at least one pair of recesses are symmetrically distributed along the axis and are used for penetrating through a bearing rope and a wire of the linear array. According to the invention, the structure of the transducer is optimized, and the wiring and positioning functions which can be realized only by an additional skeleton traditionally are integrated on the transducer shell, so that the radial size and the overall weight of the linear array are remarkably reduced, the manufacturing cost and the structural complexity are reduced, and meanwhile, good acoustic performance is ensured.

The utility model discloses a waterproof external sound box, and relates to the technical field of outdoor sound equipment, the waterproof external sound box comprises a sound equipment body, one side of the sound equipment body is fixedly connected with a support, the top end of the support is fixedly connected with a rain baffle, the rain baffle is located above the sound equipment body, and the bottom end of the rain baffle is fixedly connected with a rain cover. According to the above structure, the support is installed on the sound box body, the rain baffle is installed on the top of the support, the rain sensor is installed on the top of the rain baffle, the rain cover is installed at the bottom of the rain baffle, and when the rain sensor monitors rainwater, the rain cover can fall down to wrap the sound box body. Therefore, people do not need to worry about damage of sudden rainfall to sound equipment, people can enjoy outdoor activities and music more securely, rainwater is prevented from entering the sound equipment to cause erosion of internal elements, equipment failure and damage caused by water inflow are reduced, and the service life of the sound equipment is prolonged.

Provided is a waterproof assembly for a sound transmission hole of an acoustic device. The waterproof assembly includes a waterproof membrane, a buffer member, and a support member. The waterproof membrane is configured to allow air molecules to pass through and block water molecules from passing through. The buffer member includes an adhesive surface. The adhesive surface is adhesive so as to adhere the waterproof assembly to a target surface after being subjected to an external pressure. The support member is located between the waterproof membrane and the buffer member, and configured to reduce a degree of wrinkling of the waterproof membrane when the waterproof assembly is assembled. By providing the support member and the buffer member, the waterproof membrane is less prone to wrinkling and deformation during assembly into the acoustic device, thereby maintaining excellent acoustic performance and waterproof effect.

To provide a laminate type composite vibrator that is suitable for mounting in a limited space and widens an in-use frequency band.SOLUTION: A laminate type composite vibrator 400 includes a first composite vibrator 41 and a second composite vibrator 42 laminated on an acoustic radiation surface 40. The second composite vibrator 42 functions as an acoustic matching layer at an in-use frequency of the first composite vibrator 41.SELECTED DRAWING: Figure 1

Provided is an electroacoustic transducer capable of improving the reliability of a drive circuit and the sound quality. The electroacoustic transducer includes: a vibration unit constituting a part of a partition defining a cabin space of a vehicle; a magnetic circuit on an outside of the cabin space; and an electrical element configured to process an electrical signal for vibrating the vibration unit. The electrical element is located in the cabin space.

The utility model discloses outdoor waterproof sound equipment, which relates to the field of waterproof sound equipment and comprises a board, an adjusting assembly is arranged at the upper end of the board, a fixing plate is fixedly connected to the upper end of the adjusting assembly, a sound equipment body is fixedly connected to the upper end of the fixing plate, and a waterproof assembly is fixedly connected to the upper end of the sound equipment body. The waterproof assembly comprises a top plate arranged at the upper end of the sound equipment body. By the adoption of the structure, the clamping head is extruded to enter the circular groove during clamping, then the position of the clamping hole is consistent with the position of the circular groove after the clamping block completely enters the clamping frame, and at the moment, the clamping head can pop out of the circular groove under the action of the clamping spring; the clamping heads and the clamping holes are clamped, so that the clamping effect can be achieved, the waterproof film can be installed, and the waterproof film wraps the sound box body, so that the omnibearing waterproof effect can be achieved.

The application provides an electronic horn with electrical waterproof function for electric bicycle, wherein a single-chip microcomputer collects a K1 switch state signal under the condition that the power supply is powered on after the whole vehicle is locked, and the single-chip microcomputer controls NMOS switch to drive the transformer primary coil switch energy storage according to the collected signal, and the transformer secondary side drives the vibration energy release of the horn after voltage conversion. The application has the beneficial effects that: the electronic horn with electrical waterproof function for electric bicycle separates the power supply and control signal of the electronic horn to achieve the waterproof function, the switch signal of the horn is directly collected by the single-chip microcomputer through a current-limiting resistor and a triode, and the switch signal has the waterproof ability through reasonable parameter matching, so that the horn does not appear false ringing or failure after raining, and the user can have stable and reliable use experience.

A PCBA (Printed Circuit Board Assembly) comprises an FET (Field Effect Transistor), the drain electrode of the FET is respectively connected with one end of a first resistor, one end of the first resistor is connected with a first capacitor, and the other end of the first capacitor is connected with the source electrode of the FET; the second capacitor is connected in parallel with the first capacitor and is externally arranged between the drain electrode and the source electrode; the other end of the third capacitor is a microphone signal input end, the other end of the third capacitor is connected with the second resistor, the other end of the second resistor is a microphone signal output end, the first capacitor and the first resistor form a high-pass filter, and the first capacitor and the first resistor and a parasitic capacitor of the FET field effect transistor jointly filter and filter power frequency interference signals; the first resistor and the second capacitor form an output signal low-pass filter to filter high-frequency and WIFI signal interference; and the second resistor and the third capacitor form a microphone peripheral test standard circuit, so that the voltage and the microphone work and are synchronously output.

A medical device with audio output for use in a sterile field may include a housing and an audio output device. The housing may include an interior surface and an exterior surface, the interior surface may define an interior space of the housing including the audio output device, and the interior space of the housing may be fluidically sealed from an external environment by the housing. The audio output device may include a speaker and / or an audio exciter.

The invention discloses a bulb sound source release device applied to an arctic ice region, and relates to the technical field of underwater acoustic engineering. Aiming at low temperature, no power supply, deepwater and ice hole operation limitation in the arctic ice region, the device is driven by mechanical impact, and accurate breaking of the underwater vacuum bulb can be realized without a power supply. The device comprises a vacuum bulb cavity, a guide steel wire rope, a drop hammer, a firing pin assembly and an ice hole clamping frame. The vacuum bulb cavity comprises a pressure protection balance cavity, a pressure guide hole and a controllable knob; the drop hammer is released to fall freely along the steel wire rope, the firing pin is driven to break a vacuum bulb glass shell placed in an environment with the water depth larger than 50 m, implosion is triggered, and broadband sound waves are radiated. The device adopts a pressure protection balance cavity to counteract pre-compression of water pressure on the bulb, and the breaking reliability is ensured. The device is free of power supply, simple in structure, easy to arrange, large in action depth, good in generated sound source effect, and suitable for acoustic experiments and research in the Arctic ice region and the like.

The invention discloses electronic equipment, and belongs to the technical field of electronic equipment, the electronic equipment comprises an equipment main body, a linear motor, a swing part and a sound production part, the linear motor is arranged in the equipment main body, and the linear motor is used for driving the equipment main body to generate vibration. The first end of the swing part is connected with the equipment body, the second end of the swing part is a free end, and the equipment body drives the swing part to swing when vibrating. The sounding piece is connected with the equipment body and located on one side of the swing piece, and the swing piece collides with the sounding piece to generate sound when swinging.

The present disclosure provides an earphone. The earphone comprises a housing and at least one waterproof acoustic module. At least one accommodation cavity and at least one sound transmission hole are formed on an inner wall of the housing. The at least one sound transmission hole penetrates through the housing and communicates with the at least one accommodation cavity. Each of the at least one waterproof acoustic module comprises a communication hole and a waterproof assembly. The waterproof assembly is configured to prevent a liquid from entering an interior of the waterproof acoustic module through the communication hole. The at least one waterproof acoustic module is disposed in the at least one accommodation cavity and covers the at least one sound transmission hole to prevent the liquid from entering an internal space of the housing through the at least one sound transmission hole.

The utility model discloses a waterproof loudspeaker, which comprises a loudspeaker body, a non-contact film body is laid above a sound outlet of the loudspeaker body, a sealing structure is arranged at the edge of the film body, and the film body is hermetically connected with the loudspeaker body and a cover body through the sealing structure. According to the utility model, the layer of film body is additionally arranged above the loudspeaker body, the film body can transmit sound but isolate liquid, and the sealing structure at the edge of the film body can ensure that leakage does not occur at the joint.

To provide a microphone unit with a small size and a low cost, which corresponds to a maximum level IPX9K of an on-vehicle IP(K) test.SOLUTION: A microphone unit comprises: a cylindrical case in which an upper surface and a lower surface are opened; a metal waterproof film having a thickness of 0.01 mm or more and 0.05 mm or less, a hardness of 100HV or more, a bearing force of 70 N / mm2 or more, a tension strength of 350 N / mm2 or more, and fixed to a lower surface of the case so as to block an open part of the lower surface of the case; a substrate arranged within the case; a microphone mounted on the substrate; and a sealing member that seals the open part of the upper surface of the case.SELECTED DRAWING: Figure 2

The invention provides an earphone (01), and relates to the technical field of electronic equipment. The earphone (01) comprises a housing (10) and at least one waterproof acoustic module (20). At least one accommodating cavity (130) and at least one sound through hole (140) are formed in the inner wall of the shell (10), and the at least one sound through hole (140) penetrates through the shell (10) and is communicated with the at least one accommodating cavity (130); the waterproof acoustic module (20) comprises a communication hole (240) and a waterproof assembly (220), the waterproof assembly (220) is configured to prevent liquid from entering the waterproof acoustic module (20) through the communication hole (240), and the at least one waterproof acoustic module (20) is arranged in the at least one containing cavity (130) and covers the at least one sound passing hole (140). The at least one sound passing hole (140) is arranged in the housing (10) to prevent the liquid from entering the internal space of the housing (10) through the at least one sound passing hole (140). By using the waterproof acoustic module (20), the sensitivity difference of the acoustic sensor installed in the earphone (01) can be controlled, thereby ensuring that the sensitivity difference between different earphones (01) is within a deviation range, and ensuring the consistency of different earphones (01).

The invention provides a symmetrical double-end radiation surface hydraulic drive underwater ultralow frequency sounder, which comprises a sound production structure, a control system and a signal generator, the sound production structure comprises a sound cavity, a hydraulic cylinder and a sound radiation surface, the sound cavity is of a hollow structure, two ends of the sound cavity are provided with openings, the middle section in the sound cavity is provided with a partition plate, and the sound radiation surface is arranged in the partition plate. The two sides of the partition plate are respectively provided with a hydraulic cylinder, piston rods of the hydraulic cylinders are fixedly connected with the sound radiation surface and move in the opening direction of the sound cavity, the control system comprises a reversing servo valve, a hydraulic three-way valve and a pump station, an oil outlet and an oil return opening of the reversing servo valve are respectively connected with the pump station through oil pipes, and the hydraulic three-way valve is connected with the hydraulic three-way valve. Two oil ports of the reversing servo valve are respectively connected with two independent hydraulic three-way valves through oil pipes, one hydraulic three-way valve is connected with rod cavities of the two hydraulic cylinders through oil pipes, and the other hydraulic three-way valve is connected with rodless cavities of the two hydraulic cylinders through oil pipes.

Disclosed is a microphone module including a casing, a microphone, a drainage structure, a waterproof membrane and a limiting member. The casing has a recess. The microphone is disposed in the casing, and corresponds to the recess. The drainage structure is disposed at the casing and includes a first channel and a second channel communicated to each other. A first sound hole of the first channel is exposed from the casing, and a second sound hole of the second channel corresponds to the microphone. A waterproof membrane is disposed in the recess and located between the microphone and the second sound hole. The limiting member is disposed in the recess and located between the microphone and the waterproof membrane.

The utility model provides a transducer for a pressure-resistant deep sea high frequency parametric array, which comprises a piezoelectric vibrator parametric array, a negative electrode layer, a positive electrode layer, a backing, a matching layer, a shell and a watertight layer, the size of piezoelectric vibrators is determined, the piezoelectric vibrator parametric array is formed by a plurality of piezoelectric vibrators which are arranged in an array at equal intervals, and the piezoelectric vibrator parametric array is formed by a plurality of piezoelectric vibrators which are arranged in an array at equal intervals. The anodes and the cathodes of all the piezoelectric vibrators are connected in parallel through conductive films, and an anode wire and a cathode wire are led out; a back lining is made of a high-pressure-resistant foam material, and one side of the back lining is bonded to a positive electrode layer of the piezoelectric vibrator parametric array; and shell assembling is conducted, and matching layer pouring and watertight layer pouring are conducted. Compared with the prior art, the transducer has the capability of directly working in a 6000m deep sea environment while having excellent acoustic performance, and the pressure-resistant deep sea high-frequency parametric array is simple in manufacturing process, good in consistency and suitable for large-scale manufacturing.

To provide a fluid device that can stably generate standing wave.SOLUTION: The fluid device 10 includes flow path 20 extending along the X-axis and inside of which fluid S flows, a standing wave generating unit 30 for generating standing wave SW along the Y-axis in fluid S in the flow path 20, a transmitting / receiving unit 40 for transmitting ultrasonic wave to fluid S in the flow path 20 as well as for receiving ultrasonic wave transmitted through fluid S, a flight time measuring unit 55 for measuring the flight time, which is the time from when transmitting / receiving unit 40 transmits ultrasonic wave until when receiving the same, and a driving control unit 582 for controlling driving of the standing wave generating unit 30 based on sonic wave flight time.SELECTED DRAWING: Figure 1