7689results about "Mechanical vibrations separation" patented technology

An intraluminal imaging device is provided. In one embodiment, the imaging device includes a flexible elongate member that may be inserted into a body lumen within a patient. The flexible elongate member may define a longitudinal axis. The imaging device also has an imaging assembly that is disposed at a distal portion of the flexible elongate member. The imaging assembly may have a plurality of ultrasound transducer elements disposed around the longitudinal axis. The imaging assembly further includes a first integrated circuit controller in communication with the plurality of ultrasound transducer elements. The first integrated circuit controller may be annularly shaped. In some embodiments, the imaging assembly may include a second integrated circuit controller in communication with the ultrasound transducer elements and the first integrated circuit controller. The second integrated circuit controller may be annularly shaped.

Ultrasound devices and systems are disclosed in which cooling of an active acoustic element of an ultrasound transducer is achieved via an electrically conductive member that extends beyond a proximal side of the active acoustic element to contact a heat exchanger. The electrically conductive member delivers electrical driving signals to the active acoustic element while conducting heat to the heat exchanger. A region of the proximal surface of the active acoustic element that is free from contact with the electrically conductive member may also absent from contact with a liquid or a solid, thereby facilitating reflection of ultrasound energy. The heat exchanger may include an electrically insulating fluid that contacts the electrically conductive member to remove the heat conducted through the electrically conductive member. The active acoustic element may be a multilayer lateral mode element, and the electrically conductive member may form an electrode of the lateral mode element.

To provide a vibrator, a vibration unit including the same, and a controller, the vibrator being configured to suppress cracks generated when a thin-film vibrating element is attached to an attachment surface including a curved surface, while maintaining desired vibration characteristics.SOLUTION: A vibrator 10 is attached to an enclosure including a curved surface and applies a voltage to apply predetermined vibration, the vibrator including a flexible substrate 12, a vibration application area A1, and thin-film vibrating elements 11a, 11b, 11c. The vibration application area A1 is provided on the flexible substrate 12, which is touched by a finger of a user. The thin-film vibrating elements 11a, 11b, 11c are arranged in the vibration application area A1 of the flexible substrate 12 and apply vibration when electric power is supplied.SELECTED DRAWING: Figure 2

The invention belongs to the technical field of hard rock cutting and tunneling, and particularly relates to a front eccentric block excitation cutting disc rock breaking device which comprises a cutting assembly, an eccentric excitation device, a driving assembly and a supporting assembly, and the rear portion of the supporting assembly is fixedly connected with a cutting arm of a tunneling machine; the driving assembly comprises a motor, a main shaft and various connecting devices; an eccentric excitation device and a cutting assembly are mounted at the front end of the main shaft; the cutting assembly is mounted at the front end of the main shaft; the driving device ensures stable rotation of the cutterhead and enables vibration generated by the eccentric excitation device to be transmitted to the cutterhead. Vibration generated by rotation of the eccentric block is utilized to enable the cutter head to impact the rock, so that the rock is collapsed, and the rock is efficiently cut; as the cutter head cuts the rock mainly by means of vibration impact generated by the eccentric device, compared with a self-rotating mode and a traditional milling rock breaking mode and a TBM rolling mode, the efficiency of cutting the rock is improved, and the service life of the cutter is prolonged.

A sonotrode includes a stem extending along a longitudinal axis and a cap configured to carry out an ablative process on tissue using mechanical oscillation. The cap has at least one portion that protrudes further in a radial direction than the stem, and the at least one portion has at least one sharp rim. A surface of the cap, which is arranged between a distal end of the stem and the sharp rim of the portion, is a concave surface and / or runs at an opening angle with respect to the stem that is equal or smaller than 90 degrees. A center of mass of the cap is on the longitudinal axis.

A mist inhaler device (200) for generating a mist including a therapeutic for inhalation by a user. The device includes a mist generator device (201) and a driver device (202). The driver device (202) is configured to drive the mist generator device (201) at an optimum frequency to maximise the efficiency of mist generation by the mist generator device (201).

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.

An ultrasonic oscillator element, including a substrate, a first lower electrode, a first insulating layer, a second insulating layer, a second lower electrode, a first upper electrode, and a third insulating layer. The first lower electrode is disposed on the substrate. The first insulating layer is disposed so that the first lower electrode is located between the first insulating layer and the substrate. The second insulating layer and the first insulating layer form a first cavity. The second lower electrode is disposed adjacent to the first side of the second insulating layer and located in the outer region of the first cavity. The first upper electrode is disposed on the second side of the second insulating layer. The third insulating layer is disposed so that the second lower electrode is located between the third insulating layer and the first insulating layer.

A hydraulic vibration generation device or hydraulic motor is provided. The device includes a manifold having an inner volume with a pressure chamber extending into the inner volume, a fluid inlet orifice and a fluid outlet orifice. The device further includes a vibration generating member having a grooved drive and an off-center weight and retaining plates. The inner volume receives the vibration generating member within the inner volume. The vibration generating member rotates and generates vibration in response to hydraulic fluid flowing into the manifold through the inlet orifice and directed through the pressure chamber, relieves pressure upon exiting the pressure chamber and out of the manifold through the outlet orifice. Also provided a hydraulic motor with a same manifold and pressure chamber, but with a power generating member having the same groove drive without and off-center weight. Rotation of the power generating member generates power.

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.

An actuator includes a movable body including: a disk-shaped magnet, a pair of disk-shaped yokes fixed to front and back surfaces of the disk-shaped magnet, a pair of spring retaining parts connected at one ends to the disk-shaped yokes, respectively, and connected at other ends to central portions of circular leaf springs, respectively, and a protruding part protruding in an axial direction of the disk-shaped magnet from the other end of one spring retaining part of the pair of spring retaining parts; and a fixing body including: a coil disposed at an outer circumference of the movable body, and a case including an opening portion through which the protruding part is inserted, the case accommodating the coil and the movable body such that a protruding end side of the protruding part protrudes to an outside.

A vibration test device includes a vibrating table on which an object to be vibrated is to be attached, an electric actuator that vibrates the vibrating table in a predetermined direction, and a controller that controls the electric actuator. The electric actuator includes an electric motor of which rotation can be switched between forward and reverse rotations, and a drive device that is supplied with electric power from a power source and controlled by the controller to supply driving electric power for vibrating the vibrating table at desired amplitude and frequency to the electric motor. The drive device includes a power regenerative converter that regenerates electric power that is not consumed by acceleration of the electric motor, among electric power regenerated from the electric motor when the vibrating table is vibrated at the desired amplitude and frequency, to the power source.

A hookah device (202) which attaches to a hookah (246). The hookah device (202) comprises a plurality of ultrasonic mist generator devices (201) for generating a mist for inhalation by a user. The hookah device (202) comprises a driver device (202) which controls the mist generator devices (201) to maximize the efficiency of mist generation by the mist generator devices (201) and optimize mist output from the hookah device (202).

A user input component for an electronic device includes a haptic engine, a pressing surface, and a force sensor. The force sensor detects force applied by a user to the pressing surface and from this value and a spring constant of a supporting structure, an approximate displacement distance can be determined. The displacement distance can be used either directly or indirectly to select a drive current for a coil configured to provide haptic effect along the same direction of the user pressing force.

A vibration generating device includes a housing; a movable body housed in the housing; a support configured to support the movable body so as to be vibratable; a bracket that includes a main plate and an attachment plate extending from the main plate, and is attached to the housing via the attachment plate; a coil attached to the main plate; and a permanent magnet attached to the movable body and configured to generate a magnetic flux toward the coil.

The invention belongs to the technical field of acoustic devices and ultrasound, and discloses an ultrasonic transducer, a multi-layer gradient acoustic impedance matching layer and a preparation method of the multi-layer gradient acoustic impedance matching layer, and the multi-layer gradient acoustic impedance matching layer comprises a plurality of acoustic impedance layers which are arranged in sequence and have different acoustic impedances; in the direction from the first acoustic impedance layer to the last acoustic impedance layer, the acoustic impedance of the acoustic impedance layer is in a decreasing trend; the surface of the previous acoustic impedance layer is provided with a micro-columnar structure, the micro-columnar structure extends into the next acoustic impedance layer, a mechanical interlocking interface is formed between the previous acoustic impedance layer and the next acoustic impedance layer through the micro-columnar structure, and the micro-columnar structure is gradually thinned from the bottom to the tip. According to the invention, the gradient impedance design of the acoustic impedance layers significantly reduces the acoustic reflection between the acoustic impedance layers, improves the acoustic energy transmission efficiency, and widens the working bandwidth of the ultrasonic device; the micro-columnar structure not only maintains the stability of interlayer adhesion in a high vibration or thermal stress environment, but also further smooths gradient transition and reduces interface reflection.

A hydraulic vibration generation device or hydraulic motor is provided. The device includes a manifold having an inner volume with a pressure chamber formed in the inner volume, a fluid inlet orifice and a fluid outlet orifice. The device further includes a vibration generating member having a grooved drive and an off-center weight and retaining plates. The inner volume receives the vibration generating member within it. The vibration generating member rotates and generates vibration in response to hydraulic fluid flowing into the manifold through the inlet orifice and directed through the pressure chamber, relieves pressure upon exiting the pressure chamber into a pressure relief channel and out of the manifold through the outlet orifice. Also provided a hydraulic motor with a same manifold and pressure chamber, but with a power generating member having the same groove drive without an off-center weight. Rotation of the power generating member generates power.

The invention relates to the technical field of flexible ultrasonic transducers, and discloses a wearable flexible ultrasonic transducer for breast cyst screening. The objective of the invention is to solve the problems of low array element density, limited sound wave transmission energy, low imaging effect resolution, no matching layer or shielding of the matching layer, large error caused by analysis of an ultrasonic transducer, inconformity with a KLM model, incapability of realizing high-efficiency ultrasonic capacity transmission, low ultrasonic transducer bandwidth, low resolution, low cost and the like in the prior art. And high-quality imaging is difficult to realize. The flexible wearable ultrasonic transducer is sequentially provided with an electrode substrate, a backing layer, a piezoelectric layer, a first matching layer, a patch and a second matching layer from top to bottom, the acoustic function is enhanced, the flexible ultrasonic transducer which is high in density, free of shielding of the matching layer, high in bandwidth, capable of achieving two-dimensional and three-dimensional multi-dimensional imaging and capable of achieving large-range curvature conformal is developed, and the flexible ultrasonic transducer can be used for long-time continuous screening of breast cysts.

The invention relates to an ultrasonic transducer capable of realizing a high torsional vibration-longitudinal vibration amplitude ratio and a design method thereof. The ultrasonic transducer comprises a piezoelectric ceramic vibrator 3, an amplitude-change pole 2 and a tool head 1 which are connected in sequence, the shape of the amplitude-change pole is formed by rotating a specific geometric curve around the axis. The interior of the amplitude-change pole is of a cavity structure 5, the wall thickness distribution of the amplitude-change pole is adjustable, the cavity structure is a through hole or a blind hole, and the shape of the cavity structure is an equal-diameter cavity extending along the axis or a special-shaped cavity formed by rotating a specific geometric curve around the axis. By optimizing the internal cavity structure and the wall thickness distribution and adjusting the amplitude proportion between torsional vibration and longitudinal vibration, the longitudinal vibration of the transducer can be converted into longitudinal torsional vibration, so that the transducer has both longitudinal vibration and torsional vibration. Due to the unique cavity type structure in the amplitude-change pole, the amplitude ratio of generated torsional vibration to longitudinal vibration can be larger, the ultrasonic effect with the high torsional vibration-longitudinal vibration amplitude ratio can be generated, and vibration output with the high torsional vibration-longitudinal vibration amplitude ratio can be achieved.

The invention discloses a metal material performance detection method based on longitudinal wave resonance, metal material performance detection is carried out based on a laser and a metal material performance detection sensor, and the metal material performance detection sensor comprises an electromagnetic ultrasonic transducer EMAT and a magnetism gathering ring; the method comprises the steps that EMAT and a magnetism gathering ring are arranged on the two sides of a metal material sample respectively; laser emitted by the laser device penetrates through the magnetism gathering ring and the liquid-solid mixed material covering the surface of the metal material sample to generate an ultrasonic resonance signal in the metal material sample, the ultrasonic resonance signal is finally received by the EMAT, and the performance of the metal material sample is detected based on the ultrasonic resonance signal received by the EMAT. The detection effect of the performance of the metal material can be improved.

An ultrasonic transducer device including a substrate and an ultrasonic oscillation unit is provided. The ultrasonic oscillation unit is disposed on the substrate. The ultrasonic oscillation unit includes a first electrode layer, a first insulating layer, a second electrode layer, a second insulating layer, a plurality of capacitor protrusions, and a cavity located between the first insulating layer and the second insulating layer. The capacitor protrusions are disposed in the cavity by being disposed on at least one of the first insulating layer and the second insulating layer. The first insulating layer and the second insulating layer are separated by a gap and are located between the first electrode layer and the second electrode layer. The height of each of the capacitor protrusions is less than a height of the gap.

A system may include an array of sensor elements, the array of sensor elements each comprising a first type of passive reactive element, a second type of passive reactive element electrically coupled to the array of sensor elements, a driver configured to drive the array of sensor elements and the second type of passive reactive element, and control circuitry configured to control enabling and disabling of individual sensor elements of the array of sensor elements to ensure no more than one of the array of sensor elements is enabled at a time such that when one of the array of sensor elements is enabled, the one of the array of sensor elements and the second type of passive reactive element together operate as a resonant sensor.

The electrostatic film ultrasonic transducer comprises a vibration layer, a non-vibration layer, a supporting column and an insulating layer, the frame of the vibration layer is attached to the frame of the non-vibration layer, and an air gap is formed between the vibration layer and the non-vibration layer through the supporting column after the frame of the vibration layer is attached to the frame of the non-vibration layer. The insulating layer is located between the supporting column and the first conductive layer or between the supporting column and the bottom electrode, the air gap is vacuum or filled with gas not prone to ionization, and / or the insulating layer is not prone to ionization. According to the electrostatic film ultrasonic transducer, air ionization is not easy to occur in the air gap, and / or charges are not easy to lose on the insulating layer, so that the accumulation of static electricity on the surface of the insulating layer can be reduced, the influence of the charges generated by air ionization on air partial pressure is greatly reduced, and the reliability and sound pressure of the electrostatic film ultrasonic transducer can be improved.

An information processing device according to embodiments controls a vibration device including a plurality of vibrators and configured to apply vibration to a user in response to an input signal. The information processing device identifies a directional component of the object constituting a vibration source relative to the vibration device in input content and controls an amplitude and a delay of each of the vibrators, based on the directional component.

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 invention belongs to the technical field of automobile metal plate detection, and particularly relates to a new energy automobile metal plate welding spot detection device which comprises a tail plate and a heat insulation head arranged on one side of the tail plate, and further comprises a fixing pipe arranged between the tail plate and the heat insulation head, and the tail plate is fixedly connected with the heat insulation head through the fixing pipe; the heating unit is arranged at the end, away from the tail plate, of the heat insulation head; the trigger prompting mechanism is arranged in the heat insulation head and is in contact with the heating unit; and the automatic adjusting unit is arranged in the heat insulation head. According to the automobile metal plate defect welding spot detection device, the accuracy and comprehensiveness of automobile metal plate defect welding spot detection can be improved through the double detection modes of insertion and heat conduction, the automobile metal plate defect welding spot detection device can be suitable for welding spot detection at different positions and at different temperatures of automobile metal plates through the modes of automatic adjustment and manual adjustment, and meanwhile, through airflow vibration, the detection precision is improved. The possibility that defective welding spots are not detected can be reduced.

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 relates to the technical field of ultrasonic cutting, in particular to a sawtooth-shaped circular knife ultrasonic cutting acoustic system which comprises a main shaft, an ultrasonic vibrator and an ultrasonic cutting tool, the ultrasonic vibrator is connected with the main shaft, the ultrasonic cutting tool is installed on the side, away from the main shaft, of the ultrasonic vibrator, and a plurality of sawtooth grooves are formed in the peripheral face of the ultrasonic cutting tool. The sawtooth grooves are annularly distributed at equal intervals, and sawteeth are formed between every two adjacent sawtooth grooves. According to the ultrasonic cutting tool, the sawtooth grooves are formed in the peripheral surface of the ultrasonic cutting tool, so that the machining mode of the workpiece is intermittent cutting, the contact time of the ultrasonic cutting tool and the workpiece is shortened, and then friction resistance generated by contact between the ultrasonic cutting tool and the workpiece is reduced; heat generated between an ultrasonic cutting tool and a workpiece in the workpiece machining process can be greatly reduced, heat is released through non-contact gaps, and cutting force is reduced by reducing friction resistance.

An apparatus includes an ultrasonic sensor stack configured to transmit and receive ultrasonic waves. The ultrasonic sensor stack includes at least a thin film transistor layer, a piezoelectric layer, and a thin electrode layer. The ultrasonic sensor stack further includes a tunable metal layer coupled to the thin electrode layer and an acoustic layer coupled to the tunable metal layer, where the tunable metal layer has a thickness greater than a thickness of the thin electrode layer. The thickness of the tunable metal layer may be configured to match a peak frequency in an ultrasonic frequency range of the ultrasonic waves transmitted by the ultrasonic sensor stack. In some implementations, the tunable metal layer includes a copper layer and the acoustic layer includes polyimide or polyethylene terephthalate.