2396 results about "Transductor" patented technology

A core module and an electronic device are provided. The core module comprises a housing component, a transducer device, a vibration panel, and a face attachment component. The housing component includes a core housing and a core cover plate covering an open end of the core housing. The core cover plate and the core housing cooperate to form a first cavity. The face attachment component and the housing component cooperate to form a second cavity. The transducer device is at least partially located in the first cavity. The vibration panel is at least partially located in the second cavity. The core cover plate is provided with a first avoidance hole allowing the vibration panel to be connected with the transducer device. The core module is provided with a channel connecting the second cavity with the outside of the core module.

Aspects of this disclosure relate to an acoustic wave device with transverse mode suppression. The acoustic wave device can include a piezoelectric layer, an interdigital transducer electrode, a temperature compensation layer, and a mass loading strip. The mass loading strip can overlap edge portions of fingers of the interdigital transducer electrode. The mass loading strip can have a sidewall that is tapered inwardly from a bottom side of the mass loading strip to a top side of the mass loading strip. The top side can be shorter than the bottom side.

A core module and an electronic device are provided. The core module comprises a housing component, a transducer device, a vibration panel, and a face attachment component. The transducer device is disposed in the housing component. The vibration panel is connected with the transducer device. The face attachment component includes a face attachment sleeve connected with the vibration panel by a bonding medium to make the vibration panel contact a skin of a user through the face attachment component. The bonding medium is configured to allow the face attachment component to be removed from the vibration panel as a whole without damaging the face attachment component or the vibration panel. The face attachment component is detachable such that the user can easily replace the face attachment component with a new one when needed, and the face attachment component can be removed as a whole to avoid breakage.

Aspects of this disclosure relate to acoustic wave devices on stacked die. A first die can include first acoustic wave device configured to generate a boundary acoustic wave. A second die can include a second acoustic wave device configured to generate a second boundary acoustic wave, in which the second die is stacked with the first die. The first acoustic wave resonator can include a piezoelectric layer, an interdigital transducer electrode on the piezoelectric layer, and high acoustic velocity layers on opposing sides of the piezoelectric layer. The high acoustic velocity layers can each have an acoustic velocity that is greater than a velocity of the boundary acoustic wave.

The invention discloses a planar phased array ultrasonic transducer, and relates to the technical field of transducers, the planar phased array ultrasonic transducer comprises a 1-3 type piezoelectric composite board, a common positive electrode panel and a flexible circuit board, the 1-3 type piezoelectric composite board comprises a polymer frame and a plurality of PZT piezoelectric ceramic columns, all the PZT piezoelectric ceramic columns are embedded in the polymer frame in an array, and the PZT piezoelectric ceramic columns are connected with the flexible circuit board. One end of each PZT piezoelectric ceramic column is a positive electrode end, the other end of each PZT piezoelectric ceramic column is a negative electrode end, the common positive electrode panel is connected with the positive electrode ends of the PZT piezoelectric ceramic columns, the flexible circuit board is provided with a bonding pad area and at least one pin area, the bonding pad area is fixedly provided with a plurality of bonding pads, the pin area is fixedly provided with a plurality of pins, and the flexible circuit board is provided with a plurality of conductive terminals. All the pins, all the bonding pads and all the negative electrode ends of the PZT piezoelectric ceramic columns are in one-to-one correspondence, the bonding pads are electrically connected with the pins, and the bonding pads are connected with the negative electrode ends of the PZT piezoelectric ceramic columns; according to the invention, the PZT is applied to the planar phased array ultrasonic transducer.

The invention relates to the technical field of comprehensive corrosion prevention and pollution prevention of ships, in particular to a marine high-power ultrasonic pipeline pollution prevention device and a control method thereof. The contact type ultrasonic transducer is mounted on the outer wall of the seawater pipeline and is matched with the high-power driving controller, so that high-power ultrasonic waves can be used for repelling, preventing and treating contaminated marine organisms, and attached marine organisms can be removed to a certain extent; the transducer is arranged on the outer wall of a ship seawater pipeline or a valve box in a contact type installation mode and is connected through a profiling base stud to be installed, so that the whole device is convenient to disassemble, assemble, arrange and maintain, and flowing of seawater in the pipeline is not affected; according to the ultrasonic pipeline anti-fouling device, wheel control logic is adopted, automatic adjustment and alternate intermittent operation are achieved by adding the switching circuit, the power consumption and heat production can be effectively controlled while the ship seawater pipeline anti-fouling effect is guaranteed, the reliability of the device is improved, the size of the device is reduced, and the application prospect is wide.

The technology described herein is directed towards resonators that incorporate or are closely coupled to transducers from which energy is harvested. The resonators can be unit cells of a metasurface configured for narrowband sound absorption by phase cancellation of the acoustic wave Electroacoustic transducers such as piezoelectric transducers can be positioned, e.g., at the neck ports of the resonators, to generate electricity as the air pressure of incoming acoustic waves enters the unit cells. Energy can be harvested from the electricity, and stored for usage and / or used directly to power a device. Such a device powered by the harvested energy can change the resonant frequency of the device, e.g., by changing temperatures in the resonators' air cavities, changing respective dimensions of the respective air cavities, or changing the resonant frequency of the unit cells resonators by changing respective airflow in the respective air cavities.

Embodiments of the present disclosure provide an acoustic output device including: a transducer configured to generate a mechanical vibration based on an electrical signal, the transducer including a magnetic circuit assembly and a vibration transmission sheet; a housing configured to accommodate the transducer, the housing including a panel and a shell, the magnetic circuit assembly being elastically connected to the housing through the vibration transmission sheet, and the transducer transmitting the mechanical vibration to a user through the panel; and an additional element connected to the magnetic circuit assembly. The additional element is elastically connected to the panel through the magnetic circuit assembly.

The utility model provides an electric field treatment system and a transducer thereof, the transducer comprises a backing and an electrode array attached to the backing, the electrode array comprises a plurality of electrode units arranged at intervals, a plurality of connecting parts connecting two adjacent electrode units, and open spaces formed among the plurality of electrode units. The transducer further comprises a conductive adhesive attached to the electrode array, and the conductive adhesive is arranged on the side, away from the backing, of the electrode unit in a whole piece covering mode. According to the electric field treatment system and the transducer thereof, the whole piece type conductive adhesive covering all the electrode units is adopted, replacement is convenient, the heating conditions of all the electrode units tend to be consistent, and local heat concentration is avoided.

The invention discloses a high-power pulse electromagnetic sound source system with high repetition frequency and a use method thereof, and the system mainly consists of an energy storage battery, a boost module, a distributed cascade Marx module, a control module, a full-bridge load module and a distributed electromagnetic transducer. The pulse sound source system has the advantages of various functions, strong interaction capability, high power, high repetition frequency, wide sound source propagation range, intelligence, reliability and the like, and provides technical support for pulse sound source research while ensuring portability and economy.

The present invention relates to multi-stake underwater transducers and arrays for the generation and reception of sound waves in water. The invention provides the design and fabrication of compact piston-type underwater transducers of low-to-mid operating frequency made of piezoelectric single crystals without the need of any pre-stress mechanism. The invention uses a multi-stake pipe-like motor section made of piezoelectric single crystals of high transverse mode piezoelectric coefficients and low acoustic impedance, and small-diameter and light head mass(es). The present invention also discloses various means of increasing the bandwidth of the multi-stake underwater transducers as well as derivative transducers and arrays made of them, including compact 2D and 3D omni-directional transducers, planar, conforming and shaped arrays of various designs, high-density arrays and low-drop-down-ratio parametric arrays of either single or dual frequency bands.

A mounting system for a front view sonar transducer. The mounting system has a mounting assembly a mounting bracket affixed to a boat and to a mounting clamp. The mounting clamp has a clamping portion configured to clamp around an outside perimeter of a support tube. The mounting system further includes a waterproof motor housing positioned above the mounting bracket, the motor housing secured to a flange on the support tube. A tubular shaft extends through the waterproof motor housing and support tube, the tubular shaft having an upper portion extending upwardly from the waterproof motor housing and a lower portion configured to receive a front view sonar transducer. The tubular shaft directionally controlled by a motor in the motor housing. A trolling motor shaft extending through the tubular shaft with a motor for directionally controlling the trolling motor in the motor housing. The mounting system further includes one or more foot pedal assemblies configured to operate one or both of the electric motors within the waterproof motor housing.

The invention discloses a pipeline stress detection method and a stress simulation calculation method. The method comprises the following steps: S1, selecting a plurality of measuring points on the circumference of a cross section of the outer wall of a pipeline; s2, grinding the measuring points on the outer wall of the pipeline until a pipeline body appears; s3, a prefabricated X65 pipeline steel test piece is placed on the pipeline near the measuring point, an ultrasonic transducer probe is placed on the zero-stress test piece, and sound time and temperature during zero stress are obtained; s4, an ultrasonic transducer probe is coupled to the measuring point of the pipeline body along the axis, and the stress of the four positions of the outer wall of the pipeline is obtained; s5, according to the ultimate mechanical parameters of the pipe and the design standard of the pipe, the tension and pressure state, the bending degree and the safety coefficient in the working period of the measured position of the pipe are given; according to the method, a stress detection mode and a simulation calculation method are combined, detection, simulation model establishment and stress calculation are carried out on the pipeline in a simple and convenient mode, the pipeline safety analysis result can be accurately obtained under the condition that the pipeline safety is not affected, and the method has important significance in the field of geological exploration.

The invention relates to the technical field of fault detection, in particular to a high-voltage connector loosening fault detection method and device and an automobile, and the method comprises the following steps: forming a surface acoustic wave resonator array based on an interdigital transducer array, an acoustic wave resonator and a flexible waveguide; butting a signal source radio frequency cable with the pin interdigital electrode chip, triggering data acquisition, performing Fourier transform on original data, and judging the loosening risk of the connector according to each parameter threshold value; carrying out three-dimensional modeling on the connector plugging interface, carrying out modal analysis on the model, and obtaining surface acoustic wave frequencies, group velocities and phase distribution under different pre-tightening forces so as to identify a contact force abnormal region; based on a multi-stage early warning mechanism, rapid locking is achieved through electrorheological fluid, and displacement is finely adjusted through a magnetostrictive rod. According to the invention, the loosening hidden danger can be quickly and accurately locked, a tight protection system is constructed by multi-stage early warning and mechanical self-locking, and the loosening risk of the high-voltage connector can be greatly reduced from early warning to active intervention.

The invention relates to the technical field of hemispherical harmonic oscillator assembly, in particular to a welding method and device for an assembled hemispherical harmonic oscillator, and the device comprises a vibration welding platform and a clamping assembly located above the vibration welding platform; the vibration welding platform is used for bearing the sensitive base and providing a thermal field and a vibration field needed by welding, and the clamping assembly is used for clamping the center shaft and sending the center shaft into a center hole of the base. A heating unit and a composite vibration ultrasonic transducer are arranged in the platform, and the platform is configured to apply high-frequency vibration formed by superposition of vertical longitudinal waves and horizontal torsional waves to the base. The high-frequency vibration thixotropic effect is used for reducing the viscosity of the molten solder, the ultrasonic cavitation effect is used for forcibly discharging bubbles at the bottom of the blind hole, and the sound radiation pressure generated by the vibration standing wave field is used for driving the center shaft to achieve friction-free self-centering in the hole. According to the device, the problems of air bolt pseudo soldering and rigid assembly clamping stagnation in the traditional process are solved, and the assembly coaxiality and the connection strength of the harmonic oscillator are remarkably improved.

A test bench for checking correct operation of torque wrenches to be tested may include: at least one calibration station for a torque wrench, wherein the at least one calibration station includes a transducer, including a rotating head, configured to couple with a tool head of the torque wrench so that the tool head and the rotating head rotate in unison; an electronic processing unit configured to control the transducer according to predetermined tightening programs consistent with the torque wrenches to be tested; and a locking mechanism of the torque wrench, configured to lock a handle of the torque wrench when the tool head is coupled to the rotating head, wherein the locking mechanism includes an elongated guide, on which a slide moves longitudinally with respect to the handle of the torque wrench, wherein the elongated guide includes reaction bars that limit movement by the handle of the torque wrench.

The present disclosure relates to a measuring transducer of a Coriolis flow meter including a measuring tube arrangement having at least one measuring tube having an inlet section and an outlet section. The measuring transducer also includes at least a first exciter component of an oscillation exciter and at least a first sensor component of an oscillation sensor. A securement body arrangement is connected with the at least one measuring tube in the inlet section and / or in the outlet section, with the securement body arrangement having at least one opening. A connecting component connecting the measuring tube arrangement with a process line, wherein the connecting component includes at least one fastener apparatus, which extends through the opening of the securement body arrangement, wherein the connecting component is connected with the securement body arrangement via the fastener apparatus at least by shape interlocking.

The invention provides a compensation balance system and method of an electrodynamic transducer, and aims to solve the following problems in the prior art: a traditional electrodynamic sound source transducer needs to realize large-volume displacement in a low-frequency application scene, but the flexibility of an elastic suspension support of the traditional electrodynamic sound source transducer is insufficient to bear hydrostatic pressure; meanwhile, traditional passive and active compensation modes have challenges in the aspects of delay and stability. In order to solve the problems, the compensation balance system and method of the electrodynamic transducer mainly comprise an underwater acoustic transducer, a low-pressure middle cabin and a high-pressure gas cylinder, and a system self-checking function, a transducer piston position balance control function and a transducer fuzzy self-adaptive control function are integrated. The defects in the prior art are effectively overcome, and balance between the inner cavity of the transducer and the external hydrostatic pressure can be rapidly achieved. In addition, the control process is further simplified by determining the target control quantity, and the overall performance of the system is improved.

Acoustic resonator devices and filters are disclosed. An acoustic resonator includes a substrate having a surface. A back surface of a single-crystal piezoelectric plate is attached to the surface of the substrate except for a portion of the piezoelectric plate forming a diaphragm spanning a cavity in the substrate. An interdigital transducer (IDT) is formed on a front surface of the piezoelectric plate with interleaved IDT fingers of the IDT disposed on the diaphragm. Back-side fingers are formed the back surface of the diaphragm.

Example systems and methods are provided herein for conserving power on a marine electronic device while conveying information to a user. Some such systems include a marine electronic device configured to change to a power-saving mode, in which the marine electronic device operates by drawing a reduced amount of power from a power source and does not provide real-time marine data from the sonar transducer. A second device uses power from a second power source. The marine electronic device includes a processor that receives second device real-time marine data from the second device and causes presentation of a representation of the second device real-time marine data on a screen of the marine electronic device while still operating in the power-saving mode. The second device real-time marine data is gathered or determined via the second device.

The invention discloses a full-automatic deep-cavity ball-wedge integrated bonding head device, which belongs to the technical field of semiconductor packaging equipment and comprises a bonding head base body, an ultrasonic transducer, a wire clamp assembly, a chopper, a wire guider assembly and an ignition needle assembly. The chopper is detachably mounted on the ultrasonic transducer, and the chopper can be selectively a ball bonding chopper or a wedge bonding chopper; the wire guide device assembly at least comprises a wire guide piece which is detachably installed, and when the chopper is a wedge welding chopper, the wire guide piece is arranged on the side face of the bottom of the chopper and used for providing restraining force for a welding wire at the bottom of the chopper. The ignition needle assembly is detachably installed on a Z-direction stator of the bonding equipment, and when the chopper is a ball bonding chopper, the ignition needle assembly is used for being matched with the chopper to complete welding wire ball burning. According to the invention, the integrated design of the ball bonding head and the wedge bonding head and the rapid switching of the two processes are realized, the multi-process requirements are met, the equipment cost is reduced, and the production efficiency is improved.

Unlocking insights from Geo-Data, the present invention relates to improvements in sustainability and environmental developments: together we create a safe and livable world. Described are systems and techniques for high-speed multibeam echosounder (MBES) surveying using a gondola attached to a semi-displacement or planing hull vessel. A housing encloses a multi-head MBES transducer array, with a nose fairing extending from a maximum width of the housing and a tail fairing extending from a minimum width of the housing. A hydrofoil strut segment has first and second hydrofoil surfaces orthogonal to the housing, and includes at a first distal end a coupling for flush attachment to an upper surface of the housing and at a second distal end a coupler portion for attachment to the semi-displacement or planing hull vessel. The first and second hydrofoil surfaces can generate opposing hydrodynamic forces during high-speed MBES surveying by the semi-displacement or planing hull vessel.

The invention provides a flexible magnetoelectric piezoelectric switching device, a wearable patch and a preparation method and application of the wearable patch, and relates to the field of sensors. The device comprises a flexible film substrate, a transducer and a sensor, the transducer, the flexible thin film substrate and the sensor are sequentially coupled to form the flexible magnetoelectric piezoelectric switching device. According to the flexible magnetoelectric piezoelectric switching device prepared by the invention, the piezoelectric characteristic of the flexible film substrate is combined with the magnetoelectric effect of the MENPs, so that the device can accurately control the conversion between the magnetization state and the potential, and ultrahigh controllability is realized.

The invention provides an ultrasonic detection method for internal defects of an insulating part of a power system based on a piezoelectric ultrasonic transducer, and belongs to the technical field of insulating part detection. After wavelet denoising and deep attenuation compensation are carried out on echo signals, sound path distance time delay and sound pressure amplitude parameters are extracted, defect identification and position estimation are carried out by utilizing a layered variational auto-encoder, a high-frequency transducer is switched to aiming at tiny defects, a harmonic component is extracted by adopting a nonlinear ultrasonic method, and a characteristic size is calculated; a defect distribution space feature matrix is generated based on a synthetic aperture focusing technology, a unified or personalized processing strategy is selected according to an acoustic characteristic homogenization degree evaluation value, a complete defect detection result is output, and the technical problem that deep weak defects in the electric insulation part are difficult to accurately detect and recognize is solved.

A multilayer piezoelectric substrate acoustic wave device including an active region having a center region and a border region is disclosed. The acoustic wave device can include a support substrate, a piezoelectric layer over the support substrate, and an interdigital transducer electrode in electrical communication with the piezoelectric layer. The interdigital transducer electrode includes a bus bar and a finger extending from the bus bar. The finger in the border region has a first portion, a second portion between the center region and the first portion, and a third portion between the center region and the second portion. The first portion and the third portion have liner densities greater than liner densities of the second portion and the finger in the center region.

According to the method for regulating and controlling the stability amplitude through the ultrasonic power source, the output of the ultrasonic power source is dynamically adjusted through intelligent control and a feedback mechanism, the amplitude of the transducer is stable under different loads, and the machining precision and efficiency are improved. An equivalent model is constructed through a power supply output characteristic equation and a dynamic response relationship, voltage, current and mechanical information are monitored in real time by combining a high-precision sensor, expected power output is predicted by applying a neural network after deep preprocessing, a power error is calculated by using a PID algorithm, and power supply output is dynamically adjusted. According to the method, through continuous feedback and correction, it is ensured that the amplitude of the system is reasonable and stable under the complex working condition, the stability and applicability of the ultrasonic transducer system are remarkably enhanced, and the method is particularly suitable for ultrasonic machining equipment in the complex load environment.

The present embodiments relate to a near field transducer for thermally-assisted magnetic recording (TAMR) with a hybrid plasmonic bottom layer. In a first example embodiment, a thermally-assisted magnetic recording (TAMR) write head is provided. The TAMR write head can include a main pole and a near field transducer (NFT). The NFT can include a first layer and a second layer. The first layer can include a first plasmonic material (e.g., rhodium, iridium, platinum). Further, the first layer can be disposed adjacent to the heat sink. The second layer can include a portion of a second plasmonic material (e.g., gold) and a first plasmonic portion (e.g., comprising rhodium). The first plasmonic portion of the second layer can be disposed adjacent to the ABS. The hybrid second layer (e.g., plasmonic bottom layer) can provide an improved NFT reliability during TAMR writing.

The invention discloses an electromagnetic transducer modeling and dynamic distribution parameter confirmation method considering electro-magnetic-mechanical-acoustic coupling. The method comprises the following steps: constructing a dynamic multi-physical field distribution parameter model DPM of an electromagnetic transducer system; a PGA model optimization method based on a parallel genetic algorithm; the dynamic multi-physical field distribution parameter model DPM comprises the following steps: constructing an excitation loop equivalent model, wherein the excitation loop equivalent model comprises a plurality of excitation main loop units, a plurality of air gap magnetic flux leakage loop units and a plurality of permanent magnet loop units; and constructing a mechanical structure equivalent model, wherein the mechanical structure equivalent model comprises physical models such as a system radiation panel, a spring system and a rubber panel. According to the method, parameters of the DPM are optimized through the PGA algorithm, the performance efficiency of the electromagnetic transducer is improved, and a new method is provided for design of the electromagnetic transducer.

The invention discloses an ultrasonic non-transformer driving transducer circuit, which comprises a driving circuit, an isolation damping circuit, a receiving circuit and a transducer, and is characterized in that the driving circuit is connected with the transducer through the isolation damping circuit; the driving circuit comprises an ultrasonic chip, a resistor R2 and a capacitor C1, the resistor R2 is arranged between a DVS power supply end and a DV2 pin of the ultrasonic chip, and the capacitor C1 is connected between the resistor R2 and the DVS power supply end in parallel; the isolation damping circuit comprises a transistor, a resistor R1 and a capacitor C2, a collector electrode of the transistor is connected to a DV2 pin of the ultrasonic chip, an emitting electrode of the transistor is connected with the transducer, the resistor R1 is connected between a non-grounding end of the capacitor C1 and a base electrode of the transistor, and the capacitor C2 is connected between the emitting electrode and the base electrode of the transistor. According to the invention, through the driving circuit, the isolation damping circuit, the receiving circuit and the transducer, the functions of driving, isolation, damping, noise reduction and the like are realized through a simple circuit, and the problems of high voltage transformation cost, overlarge occupied space and the like are effectively solved.

A negative-stiffness audio transducer can include a frame, a voice coil, and a suspension assembly resiliently attaching the voice coil to the frame. The suspension assembly provides a negative stiffness to axial movement of the voice coil. The transducer further includes a diaphragm coupled to the voice coil such that the voice coil moves the diaphragm in an axially inward direction or an axially outward direction in response to an electrical signal. A stabilizer can be used to selectively move the diaphragm axially inward or outward to maintain the audio transducer in an operational state.