3222 results about "Transductor" patented technology

Aspects of this disclosure relate to an acoustic wave resonator with a patterned conductive layer. The acoustic wave resonator can include a piezoelectric layer, an interdigital transducer electrode over the piezoelectric layer, and a temperature compensation layer over the interdigital transducer electrode. The interdigital transducer electrode can include a bus bar and fingers extending from the bus bar. The fingers can each include an edge portion and a body portion. The patterned conductive layer can overlap the edge portions of the fingers. The patterned conductive layer can conductive portions that are spaced apart from each other. A portion of the temperature compensation layer can be positioned between the patterned conductive layer and the interdigital transducer electrode.

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.

A sonar transducer mount and aiming system for attachment to an electric trolling motor, which includes a rotary actuator assembly and a rotating shaft. The rotary actuator assembly includes a housing that is secured to the electric trolling motor and a rotating coupler is rotationally driven. The rotating shaft is connected to and rotates with the rotating coupler and includes a sonar transducer mounting point. The rotating shaft of the sonar transducer mount and aiming system and the electric trolling motor shaft have a common axis of rotation and are configured to rotate independently from one another about the common axis of rotation.

A sonar transducer mount and aiming system for attachment to an electric trolling motor, which includes a rotary actuator assembly and a rotating shaft. The rotary actuator assembly includes a housing that is secured to the electric trolling motor and a rotating coupler is rotationally driven. The rotating shaft is connected to and rotates with the rotating coupler and includes a sonar transducer mounting point. The rotating shaft has a tubular shape with a through bore that is configured to receive at least a portion of an electric trolling motor shaft in a co-axial arrangement. The size and shape of the through bore is designed so that the electric trolling motor shaft may be positioned within the through bore in clearance fit such that the rotating shaft of the sonar transducer mount and aiming system is free to rotate independently of the electric trolling motor shaft.

To provide an alternative audio transducer device that works somewhat to address some of the shortcomings of existing technologies, a manufacturing method for the same, and a personal audio device.SOLUTION: An audio transducer A100 includes a diaphragm A101, a diaphragm suspension, and a transducer base structure. The diaphragm suspension includes multiple hinge mounts A107a, A107b. The transducer base structure includes a body A110 and a conductive coil A106 of a conversion mechanism. The diaphragm suspension rotatably mounts the diaphragm A101 to the transducer base structure. The diaphragm suspension is made of soft material and / or damping material. The position of the rotational axis of the diaphragm A101 is determined on the basis of a nodal axis of the diaphragm A101. The conversion mechanism of the audio transducer converts sound in cooperation with the moving diaphragm A101 and includes a design in which a magnet moves or a design in which a coil moves.SELECTED DRAWING: Figure 1F

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 invention provides an ultrasonic vibration auxiliary brazing device for a superhard abrasive formed grinding wheel and an operation method of the ultrasonic vibration auxiliary brazing device, the device comprises a motion control system, an ultrasonic vibration system, a high-frequency induction brazing system and a formed grinding wheel fixing device, and the formed grinding wheel to be brazed is fixed on the fixing device through a spring chuck. The motion control system is composed of a sliding block arranged on the movable guide rail and a motor controlling the sliding block to move and can control the vertical moving speed and direction of the sliding block on the guide rail. The ultrasonic vibration system comprises two ultrasonic vibration amplitude-change poles, a piezoelectric ceramic transducer and an external ultrasonic power supply, each piezoelectric ceramic ultrasonic amplitude-change pole can provide longitudinal vibration, and two-dimensional oval ultrasonic vibration in the brazing process is achieved through synthesis of the longitudinal vibration in the two vertical directions; the motion control system drives the brazing head to move up and down according to the brazing progress, and cooling water circulates in an induction coil of the brazing head. The problems that in the brazing process of the formed grinding tool, brazing filler metal distribution is not uniform, the machining quality is low, the brazing temperature is too concentrated, and the metallurgical reaction is serious in the process are solved.

This application relates to methods and apparatus for driving a transducer. A transducer driver has a switch network is operable to selectively connect a driver output to any of a first set of at least three different switching voltages. which are, in use, maintained throughout a switching cycle of the driver apparatus. The switch network is also operable to selectively connect the driver output to flying capacitor driver. A controller is configured to control the switch network and flying capacitor driver to generate a drive signal at the driver output based on an input signal, wherein in one mode of operation the driver output is switched between two of the first set of switching voltages with a controlled duty cycle and in another mode of operation the driver output is connected to the flying capacitor driver which is switched between first and second states with a controlled duty cycle.

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.

An ultrasonic transducer array including a substrate, a membrane overlying the substrate, the membrane configured to allow movement at ultrasonic frequencies, and a plurality of anchors connected to the substrate and connected to the membrane. The membrane includes a piezoelectric layer, a plurality of first electrodes, and a plurality of second electrodes, wherein each ultrasonic transducer of a plurality of ultrasonic transducers includes at least a first electrode and at least a second electrode. The plurality of anchors includes a first anchor including a first electrical connection for electrically coupling at least one first electrode to control circuitry and a second anchor including a second electrical connection for electrically coupling at least one second electrode. The ultrasonic transducer array could be either a two-dimensional array or a one-dimensional array of ultrasonic transducers.

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.

The invention discloses a magnetostrictive electromagnetic ultrasonic transducer for a pipeline and a detection device and method, and relates to the field of electromagnetic ultrasonic nondestructive detection, and the electromagnetic ultrasonic transducer comprises a magnetostrictive strip arranged on the outer surface of a to-be-detected pipeline, an eddy current coil and a plurality of excitation coil units; the eddy current coil is wound on the outer surface of the magnetostriction strip in the circumferential direction; the eddy current coil can be used as an excitation end and receiving end eddy current coil, an excitation end eddy current coil or a receiving end eddy current coil; the excitation coil units are distributed on the magnetostrictive strip at intervals; the magnet exciting coil of each magnet exciting coil unit is wound on the wall surface of the magnetostrictive strip along the axial direction; a magnet exciting coil of the magnet exciting coil unit provides a bias magnetic field for the magnetostrictive strip. The magnet exciting coil is adopted to replace a permanent magnet, so that the heat resistance of the electromagnetic ultrasonic transducer is improved; the sparse excitation coil increases the contact area between the magnetostriction strip and the pipeline to be detected, and the energy efficiency of the electromagnetic ultrasonic sensor is improved.

The invention discloses a giant magnetostrictive flextensional transducer energy conversion efficiency test system and method. The test system comprises a load part, a power supply part and a measuring and monitoring part. The load part comprises an oscillator module, an excitation module, a magnetic conduction module, an output module, a prestress loading module and a temperature control module; the power supply part comprises a programmable alternating current power supply and a matching box; the measuring and monitoring part comprises a power analyzer, a storage recorder, an oscilloscope, a laser displacement sensor, an acceleration sensor, a digital platform and the like. According to the method, the energy conversion efficiency of the giant magnetostrictive flextensional transducer under different working conditions can be simply, conveniently and effectively extracted, and theoretical support is provided for structural design and optimization of the giant magnetostrictive flextensional transducer.

An acoustic output apparatus and an earphone, including: a first diaphragm, a driving component, a second diaphragm and a housing structure, where a space between the second and first diaphragms close to the driving component forms a first cavity with the housing structure; a space between the electroacoustic transducer and the second diaphragm forms a second cavity with the housing structure; and in a working state, the driving component drives the first diaphragm to vibrate so as to cause the second diaphragm to passively vibrate, and a volume of the second cavity is not greater than ⅕ of an equivalent volume of the electroacoustic transducer.

The invention relates to the technical field of welding devices, in particular to a sandwich type longitudinal-torsional composite vibration power ultrasonic welding transducer and method. The device comprises a connecting rod, a torsional vibration assembly, a longitudinal vibration assembly, a pre-tightening supporting assembly, an amplitude-change pole and a welding head. The external power supply is independently connected with the torsional vibration assembly to generate single torsional vibration; an external power supply is independently connected with the longitudinal vibration assembly to generate single longitudinal vibration; an external power supply adopts two phases of alternating current with the same frequency and the phase difference of 90 degrees, and the torsional vibration assembly and the longitudinal vibration assembly are connected at the same time, so that longitudinal vibration and torsional vibration of the sandwich type longitudinal-torsional composite vibration structure resonate, and the resonance frequency reaches 15KHz. Longitudinal-torsional composite vibration is achieved by improving a sandwich type longitudinal-torsional composite vibration structure, electric energy is efficiently converted into mechanical energy through the piezoelectric effect, vibration energy is amplified at a common node through the amplitude-change pole, and therefore welding efficiency and quality are improved.

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.

A filter device includes a filter circuit including first and second terminals and series arm resonators along a series arm connecting the first terminal and the second terminal, and an additional circuit connected in parallel at least some of the series arm resonators. The additional circuit includes first, second, and third interdigital transducer electrodes. The first interdigital transducer electrode is connected to a first node at one end portion of a series arm resonator having a lowest anti-resonant frequency of the series arm resonators, the second interdigital transducer electrode is connected to a second node having a potential different from a potential of the first node, the third interdigital transducer electrode is connected to a third node having a potential different from the potentials of the first and second nodes, and the first and second nodes are closer to the first terminal than the third node.

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 invention provides a manufacturing method of a temperature compensation type surface acoustic wave resonator. The manufacturing method comprises the following steps: providing a substrate; manufacturing an interdigital transducer on the surface of one side of the substrate; the interdigital transducer comprises a bus bar and a plurality of long-finger electrodes; manufacturing a first load structure on one side, far away from the substrate, of the long-finger electrode; manufacturing a second load structure on one side, far away from the long-finger electrode, of the first load structure; etching the second load structure to form at least one hollow area and a metal wire at the periphery of the hollow area; and a temperature compensation layer is manufactured on the surface of one side, far away from the long-finger electrode, of the interdigital transducer. By arranging the first load structure, the propagation speed of the surface acoustic wave can be changed, so that the transverse mode can be inhibited, and the Q value of the temperature compensation type surface acoustic wave resonator is improved. According to the invention, the second load structure comprising at least one hollow area is arranged, so that a heat conduction channel is enlarged, the heat dissipation capability of the resonator can be improved on the premise of miniaturization, and the power resistance capability of the filter is improved.

A dual mode surface acoustic wave (SAW) filter includes a piezoelectric substrate, a pair of reflectors disposed on the piezoelectric substrate, and N input and output interdigital transducers (IDTs) disposed on the piezoelectric substrate and between the pair of reflectors and alternately arranged in a lateral direction. Each IDT includes a pair of comb electrodes with a plurality of electrode fingers, adjacent electrode fingers pointing in opposite directions. The total number of electrode fingers in each IDT is an odd number greater than or equal to 3. The invention also discloses a receiving filter and a duplexer.