176 results about "Vibration sense" patented technology

The invention discloses a method, a device, a medium and a program for forecasting noise of a water surface ship propeller based on excitation source reconstruction. The method comprises the following steps: firstly, determining vibration sensing point location distribution and sound field assessment point positions; determining the arrangement and size of a reconstruction source; obtaining vibration and sound transfer functions from the reconstruction source to the sound field assessment point, and numbering the functions in sequence; according to a transfer function invariance principle, establishing a propeller noise forecasting method based on a reconstructed excitation source; rapid prediction of the structural noise of the propeller shaft ship under multiple reconstruction sources is realized; the direct sound production coherence of the propeller is judged, if the direct sound production coherence is strong coherence, correction continues to be carried out to obtain vibration sound transfer functions from the reconstruction source to the sound field assessment point, and numbering is carried out in sequence; if the signal is weak coherence, a direct sound production noise source model is established based on a sound-sound transfer function, radiation noise under direct sound production of the propeller is obtained through calculation, and prediction of the propeller noise considering direct sound production is achieved based on the vector superposition principle. The method is suitable for ship thruster shafting vibration monitoring and thruster noise rapid forecasting and evaluation.

The invention discloses a handheld integrated itinerant detector and an itinerant detection method thereof. The itinerant detector comprises a multi-source sensing unit and a magnetic attraction positioning module, the inspection method comprises the following steps: establishing a multi-dimensional calibration parameter of a target device, adsorbing on the surface of the target device based on a magnetic attraction positioning module, loading a spatial layout, and generating an environment calibration model; synchronously operating the far / close distance temperature measurement module and the vibration sensing module, and outputting multi-source fusion data; performing dynamic correlation analysis, analyzing vibration spectrum energy distribution by using a feature extraction algorithm, constructing a vibration-temperature coupling feature vector in combination with temperature gradient change, inputting a fault diagnosis result of a pre-trained fault diagnosis model, generating a visual early warning map, and feeding back the early warning map in real time through an interactive interface; according to the method, the limitation of single parameter monitoring is overcome, the detection precision is remarkably improved, and a real-time, rapid and accurate fault detection result is provided through self-adaptive switching of a temperature measurement mode and a multi-frequency-band vibration acquisition strategy.

The invention relates to an active and passive hybrid vibration isolation test platform and a working method thereof. The active-passive hybrid vibration isolation test platform is composed of a main body device, a vibration sensing device, a vibration control device and an active-passive hybrid vibration isolation device. The active and passive hybrid vibration isolation devices are symmetrically arranged on the two sides of the armature and comprise supports, particle dampers and electromagnets, the electromagnets are supported above the armature through the supports, the supports are of hollow structures, damping particles are filled in the supports, and coils are wound on the electromagnets. A suspension controller in the active vibration isolation module controls the current of an electromagnet coil so as to attenuate a low-frequency vibration signal and realize active vibration control; and under the combined action of particle damping in the passive vibration reduction module, medium-frequency and high-frequency vibration signals are attenuated, and passive vibration control is realized. Compared with the prior art, the device has the advantages that the adjusting range of elasticity and damping parameters is expanded, and the vibration isolation stability is improved.

The invention provides a multifunctional sound production device. The multifunctional sound production device comprises a shell with an accommodating space, a vibration unit accommodated in the shell, a driving coil for driving the vibration unit to vibrate, and an elastic sheet fixed on the vibration unit and the shell, the vibration unit comprises a lower clamping plate connected with the elastic sheet and a sound production single body fixed in the lower clamping plate, and a vibration system of the sound production single body comprises a vibrating diaphragm fixed to the basin frame and a voice coil driving the vibrating diaphragm to vibrate and produce sound in the first direction. The magnetic circuit system of the sound production single body comprises main magnetic steel fixed on the lower clamping plate, and the driving coil and the main magnetic steel are oppositely arranged in a spaced mode in the first direction so as to drive the vibration unit to vibrate in the second direction perpendicular to the first direction. The loudspeaker assembly and the motor assembly share one magnetic circuit system, so that the cost is effectively reduced, the vibration sense of the vibration unit is increased, and the performance of the multifunctional sound production device is improved.

The utility model discloses a sound production unit and a head-mounted sound production device, the sound production unit comprises a housing assembly, and a bone conduction sound production device and an air conduction sound production device which are arranged in the housing assembly, the housing assembly comprises a contact surface which is used for contacting with human skin and a sound outlet hole through which sound of the air conduction sound production device is sent out; the sounding unit is provided with a middle surface perpendicular to the width direction of the sounding unit, and the gravity center of the bone conduction sounding device and the gravity center of the air conduction sounding device are located on the two sides of the middle surface respectively; the distance D16 between the gravity center of the bone conduction sound production device and the middle surface is smaller than the distance D17 between the gravity center of the air conduction sound production device and the middle surface, so that the vibration sense generated when the bone conduction sound production device works is closer to the middle area of the surface cover, and the use comfort is better.

The invention discloses a system for suppressing vibration in the machining process of a numerical control machine tool and a vibration suppression method. The system comprises a vibration sensing module, a signal processing and decision module, a vibration suppression execution module and a feedback and optimization module. The vibration sensing module monitors vibration information including vibration frequency, vibration amplitude and vibration sources in the machining process of the machine tool in real time and sends the vibration information to the signal processing and decision module; the signal processing and decision-making module performs vibration feature extraction according to the received vibration signal, and generates a reverse suppression signal based on a vibration feature adaptive filtering algorithm or model prediction control; the vibration suppression execution module performs vibration suppression according to the received reverse suppression signal; and the feedback and optimization module detects the residual vibration quantity and the state of the vibration suppression execution module, adjusts the control parameters of the vibration suppression execution module in real time, and forms a self-adaptive vibration suppression closed loop.

The invention relates to the technical field of magnetic core extrusion forming machines, and discloses a soft magnetic ferrite core extrusion forming machine which comprises a driven telescopic plate, a contact ring is fixedly connected to the end of the driven telescopic plate, and a transmission plate is fixedly connected to the surface of the driven telescopic plate. A vibration mechanism is arranged, a power device is started to drive a rotating shaft to rotate at the moment, when the rotating shaft rotates, a vibration roller is driven to rotate, when the vibration roller rotates, friction is generated between the vibration roller and the surface of a vibration plate, a vibration sense is generated in the friction process of the vibration roller and the vibration plate, and when the vibration plate vibrates, a driven telescopic plate is driven to vibrate; when the driven telescopic plate vibrates, the contact ring is driven to vibrate, when the contact ring vibrates, the positioning ring is driven to vibrate, and when the positioning ring vibrates, the internally-formed magnetic core is separated from the inner wall of the positioning ring and the surface of the extrusion die, so that the magnetic core is effectively separated from the extrusion die and the positioning ring and cannot be bonded together.

The utility model relates to the technical field of vibration motors, and discloses a horizontal linear vibration motor, which comprises a shell with an accommodating space, a vibrator assembly and a stator assembly, the vibrator assembly and the stator assembly are vertically accommodated in the accommodating space at intervals, and the shell comprises a cover plate fixed with the stator assembly and an upper shell fixed with the vibrator assembly. An accommodating space is defined by the upper shell and the cover plate; the vibrator assembly comprises a cuboid mass block with a mounting groove, and a magnetic steel assembly fixed on the mass block and embedded in the mounting groove; the stator assembly comprises first auxiliary magnetic steel fixed on the cover plate and a coil arranged around the first auxiliary magnetic steel; second auxiliary magnetic steel is fixedly arranged at the position, corresponding to the first auxiliary magnetic steel, of the upper shell. The magnetic steel assembly comprises a first magnetic steel and a second magnetic steel which are arranged in parallel left and right, and a third magnetic steel and a fourth magnetic steel which are clamped between the first magnetic steel and the second magnetic steel and are stacked up and down corresponding to the position of the first auxiliary magnetic steel. The six-magnetic-steel structure of the vibration motor not only effectively reduces the stress of the elastic piece, but also has stronger vibration sense.

The embodiment of the utility model discloses a vibration sensing circuit, a piezoelectric sensing assembly and a vehicle-mounted sensing system. The vibration sensing circuit comprises at least one sensing sub-circuit; the input end of each sensing sub-circuit in the at least one sensing sub-circuit can be connected with the piezoelectric vibrator sensor, the output end of each sensing sub-circuit can be connected with the controller, and each sensing sub-circuit comprises an amplifying circuit and a controlled switch; the first input end of the amplifying circuit serves as the input end of each sensing sub-circuit to be connected with the piezoelectric vibrator sensor, the second input end of the amplifying circuit is grounded, the output end of the amplifying circuit is connected with the control end of the controlled switch, and the first end of the controlled switch serves as the output end of each sensing sub-circuit to be connected with the controller. The second end of the controlled switch is grounded.

The invention discloses a noise and vibration energy acquisition system and a dynamic monitoring method thereof, and belongs to the technical field of energy conversion, the noise and vibration energy acquisition system comprises a sound input unit, a monitoring shell, an energy conversion unit, a vibration sensing unit and a storage control unit; an acoustic resonance cavity is arranged in the monitoring shell, and a vibration sensing unit, an energy conversion unit and a sound input unit are arranged in the acoustic resonance cavity from bottom to top; the vibration sensing unit and the energy conversion unit are electrically connected with the storage control unit respectively; the vibration sensing unit is used for acquiring an external vibration signal and generating an alternating current signal, the energy conversion unit is used for acquiring an external noise signal and generating an alternating current signal, and the storage control unit is used for respectively acquiring the alternating current signals generated by the vibration sensing unit and the energy conversion unit; the generated electric energy is supplied to an external load and the intensity of external vibration and noise is obtained. Synchronous acquisition of noise and vibration energy can be realized, and real-time dynamic monitoring of external noise and vibration intensity can be realized.

The embodiment of the invention provides a vibration sense information fusion special report generation method and device, electronic equipment and a storage medium, and relates to the technical field of computers. When an earthquake event is monitored, the earthquake feeling comments are automatically collected, manual intervention is reduced, and the real-time performance of earthquake feeling related data collection is improved. The big language model is used for analyzing the vibration sense data extracted from the vibration sense comments to obtain the vibration sense level and the corresponding geographic position, so that the speed and accuracy of data processing are effectively improved. According to the geographic position, the vibration sense grade and the influence field distribution map, the vibration sense distribution map is automatically generated, then the earthquake information, the vibration sense information, the vibration sense distribution map and the rapid evaluation special report are fused in the special report template, the vibration sense information fusion special report is obtained, the generation efficiency and accuracy of the vibration sense information fusion special report are remarkably improved, and the method is suitable for popularization and application. And solid support is provided for emergency response of earthquake disasters.

The invention relates to the technical field of gearbox suspension, in particular to an automobile gearbox suspension device and a vibration isolation method thereof.The automobile gearbox suspension device comprises a frame connecting unit, a hydraulic damping unit, a power transmission unit, an inertia energy consumption unit, an energy closed-loop unit, a vibration sensing unit and a self-adaptive control unit; the main hydraulic telescopic rod is filled with high-viscosity silicone oil, the auxiliary hydraulic rod is made of magnetorheological fluid, and full-band vibration is synergistically restrained through a nested structure. A pendulum bob of the inertial energy consumption unit dynamically responds to the shear thickening fluid to offset order resonance; the piezoelectric module recovers vibration energy and stores the vibration energy in the super capacitor to form a self-powered closed loop. According to the method, on the basis of real-time vibration spectrum analysis, damping parameters and energy distribution are intelligently adjusted, the problem that the high and low frequency vibration isolation effect of a traditional suspension is unbalanced is solved, dependence of external power supply is greatly reduced, and the method is suitable for efficient vibration reduction requirements of various vehicles under complex working conditions.

According to the vibration sense testing device and method, a tested finger is stably supported through a testing support, the stability and accuracy in the measuring process are ensured, a physiological characteristic testing module can collect physiological parameter changes of a subject in the detecting process in real time, a vibration starting device can generate vibration stimulus of different intensities and frequencies, and the testing accuracy is improved. The test requirements of different vibration sensing thresholds are met, the reaction collection button can accurately capture reaction signals of a subject, the real-time performance and accuracy of a measurement result are ensured, the host control operation module allows setting of personalized measurement parameters so as to adapt to the requirements of different subjects, and the test efficiency is improved. By collecting and analyzing physiological parameters and reaction signals of a subject, the vibration intensity which can be sensed by finger parts of the subject can be comprehensively evaluated, powerful support is provided for personalized health monitoring and early discovery of peripheral neuropathy, the whole testing process is automatically controlled by a control host, the complexity of manual operation is reduced, and the testing efficiency is improved. And the test efficiency is improved.

The present invention discloses a sonic motor, comprising a housing, a tailstock disposed at one end of the housing, an output shaft disposed at the other end of the housing, a rotor assembly disposed within the housing, the rotor assembly comprising a core shaft, an iron core disposed around the circumference of the core shaft, the iron core comprising four symmetrical winding posts, each of which is wound with a coil, a spring assembly disposed at one end of the core shaft located at the tailstock, the other end of the core shaft connected to the output shaft, and two mutually symmetrical magnetic tiles disposed on the inner wall of the housing. The present invention also discloses a method for implementing a sonic motor. The iron core of the present invention can be wound with four coils, which, when energized, act as four magnetic tiles, interacting with the two symmetrical magnetic tiles on the inner wall of the housing to provide driving force for the motor. Compared with the prior art method of providing four magnetic tiles, only two magnetic tiles are used while ensuring that the vibration sense remains unchanged, thereby greatly reducing production costs.

A wearable device includes a first structure having a first band and a processor mounted on the first band, and a second structure having a second band configured to wrap around a knee and at least one sensor mounted on the second band and configured to measure vibration within the knee. The processor is programmed to make a determination whether the knee is within a range that indicates Osteoarthritis based on the vibration sensed by the at least one sensor, and to output the result to an external device.

This invention designs a hot water level detection device for heating systems, belonging to the field of water level detection technology. The device includes a water level sensing unit, a temperature sensing array, a vibration sensing unit, and a data processing module. The water level sensing unit is installed on the top of the water storage device, emitting and receiving ultrasonic waves and measuring the round-trip time. The temperature sensing array includes two temperature sensors respectively installed at the top and bottom of the water storage device to acquire information on the vertical temperature distribution of the hot water. The vibration sensing unit is installed on the wall of the water storage device or on the heating pipe to collect vibration signals. The data processing module includes a temperature judgment unit, a sound velocity correction unit, a feature extraction unit, and a water level correction unit. This invention eliminates the influence of temperature stratification on sound velocity calculation through temperature gradient adaptive correction, and suppresses the interference of dynamic disturbances on water level measurement through vibration feature extraction and adaptive filtering, achieving accurate and stable hot water level monitoring under the complex operating conditions of heating systems.

The utility model discloses an electronic sports ice sleeve which comprises an oversleeve body, an electronic component set and a mouse control unit or a computer control unit, and the electronic component set is arranged on the oversleeve body. The electronic component set comprises a control element and a vibration element electrically connected with the control element, the vibration element can drive the oversleeve body to vibrate, and the control element can receive vibration signals of the mouse control unit or the computer control unit and drive the vibration element to operate according to the vibration signals. The oversleeve body enables a user to wear on an arm comfortably, the oversleeve body is provided with an electronic component set, the electronic component set comprises a control element and a vibration element, and the mouse control unit or the computer control unit can transmit a vibration signal to the oversleeve body, so that the vibration element is driven to operate, vibration acts on the arm of the user, and the user can feel comfortable. The vibration sense is stronger for a user, the authenticity of game simulation is improved, meanwhile, the operation of the mouse by the palm is not easily influenced, and the structural design is ingenious.

The invention discloses a power transformer state evaluation method based on vibration sensing network characteristics, which comprises the following steps: arranging a plurality of vibration sensors on the surface of a power transformer oil tank opposite to a winding position, acquiring steady-state vibration data under different current or voltage, extracting a sample vibration phase sequence of each measuring point from the steady-state vibration data, and calculating the state of the power transformer; calculating the PLV between every two measuring points, obtaining a PLV matrix of the power transformer, and carrying out feature extraction; and establishing an adaptive threshold system, and performing transformer state diagnosis according to the characteristic value of the PLV matrix under the system. According to the method, the vibration response relationship among different channels is fully excavated and fused to realize accurate monitoring and evaluation of the state of the transformer, and vibration information of multiple measuring points can be effectively fused and is not easily influenced by the positions of the measuring points.

The invention relates to a feedback adjustment method and device for concrete vibration and computer equipment. The method comprises the steps that vibration sensing data fed back by a plurality of sensors in the current vibration process are collected, and the data type corresponding to each piece of vibration sensing data is recognized; based on the vibration sensing data of each data type, identifying each current vibration parameter of the current vibration process through a data cloud platform, and based on each current vibration parameter, identifying vibration abnormal information and current vibration progress information of the current vibration process; based on the vibration abnormal information, vibration adjustment information of the current vibration process is generated, and therefore the current vibration process is adjusted; and when the current vibration progress information does not meet the preset vibration progress target, returning to execute the steps until the preset vibration progress target is met. By the adoption of the method, the control effect on the concrete vibrating effect of the vibrating rod can be improved.

The utility model relates to the technical field of water-jet looms, and discloses a water-jet loom with a water circulation function, which comprises a drying frame, and the inner bottom wall of the drying frame is fixedly connected with a damping component. According to the water-jet loom with the water circulation function, through the arrangement of the drying frame, the damping assembly and the damping pad, when the water-jet loom conducts spinning work, vibration can be generated, sprayed water can be sprayed to the ground in the vibration process, and damping springs have elasticity, absorb and store vibration energy and convert the vibration energy into elastic potential energy; a damping hydraulic rod disperses the vibration sense, a shock pad increases the contact area and disperses the acting force, and part of sprayed water falls into a drying frame, so that the buffering and shock absorbing effects are achieved, the situation that internal parts of equipment are damaged by the vibration sense is avoided, and the situation that a working site is moist due to the fact that water directly falls onto the ground is avoided; the service life of the water-jet loom body is prolonged; and the safety of a working site is improved.

The present application relates to liquid die forging forming device technical field, and disclose a kind of energy-saving liquid die forging forming device, including moving frame, the bottom of moving frame is fixedly connected with curved plate, curved plate is fixedly connected with contact ring in the end away from moving frame.The present application is vibrated by being set mechanism, contact ring moves and will drive curved plate move to mutually close direction, when curved plate moves, will drive moving frame on the surface of slide rail slide to mutually close direction, when contact ring moves, will be contacted with the surface of forming cavity, power device is started to drive shaft rotation at this time, when shaft rotates, will be contacted with the bottom of vibration plate, friction is carried out to generate vibration feeling, when vibration plate vibrates, will make moving frame vibrate, when moving frame vibrates, will make curved plate vibrate, when curved plate vibrates, will make contact ring vibrate, when contact ring vibrates, will make forming cavity vibrate, so that the hub formed by vibration is loosened and cannot be adhered to the inner wall of forming cavity.

The present invention discloses a floating ball type multi-degree-of-freedom vibration sensing device based on a friction nanogenerator, comprising a sensing detection mechanism and a fixed protection mechanism, wherein the sensing detection mechanism is embedded in the fixed protection mechanism, wherein: the sensing detection mechanism comprises a copper electrode, a spherical shell, deionized water, a hollow sphere and an iron core, wherein the copper electrode is attached to six positions of the closed spherical shell, namely, the top, bottom, front, back, left, and right, the deionized water is filled in the spherical shell, the iron core is embedded in the hollow sphere; the hollow sphere with the iron core is suspended in the deionized water. The present invention has strong practicality and functionality and can be widely used in the field of nanotechnology.

The embodiment of the invention provides electronic equipment, relates to the technical field of electronics, and is used for improving the experience feeling when a user uses the electronic equipment. The electronic equipment comprises a driving module and a sound production and vibration component which are arranged in a shell. The driving module is used for outputting a driving signal according to the received control variable; the sounding and vibrating component is coupled with the driving module; the sound production and vibration part is used for producing sound and generating vibration under the driving of the driving signal; therefore, the electronic equipment can simulate the vibration sense of the writing particles and the writing sound. Furthermore, even under the same control variable, the sound produced by the sound production part and the sound produced by the vibration part are random in the time domain instead of being unchanged, so that the experience of the electronic equipment is more real.

The postoperative muscle force rehabilitation detection system comprises a muscle sound sensing module, a wireless receiving module and an upper computer, the muscle sound sensing module comprises a vibration sensing module and a communication module, the communication module comprises a wireless transmitting module, and the wireless transmitting module is in signal connection with the wireless receiving module. And the wireless receiving module is electrically connected with the upper computer. According to the postoperative muscle strength rehabilitation detection system and method, through cooperative arrangement of the muscle sound sensing module, the wireless receiving module and the upper computer, noninvasive detection of human muscle strength is achieved, the influence of skin surface binding on muscle vibration is greatly reduced, and the postoperative muscle strength rehabilitation detection system and method have the advantages of being high in sensitivity and large in frequency response range.

The utility model discloses a vibration sensing information bar which is characterized in that aiming at the characteristic that vibration is generated by gnawing termites, a hole is formed in a termite bait body, a vibration transmission piece is arranged in the hole, one end of the vibration transmission piece abuts against the bottom of the hole, and the other end of the vibration transmission piece is inserted into the bottom of a vibration seat and is tightly attached to the bottom of the vibration seat; the bottom of the vibration seat is inserted into the hole and is in interference fit with the hole; a protrusion is arranged on the opposite face of the bottom of the vibration base and serves as a vibration core. Placing the vibrating reed on the vibrating core; the fixing piece is arranged above the vibrating reed in a covering mode and arranged outside the termite bait body in a sleeved mode, and therefore the whole information bar forms a complete and compact whole. When termites gnaw the termite bait body, generated vibration can be transmitted to the vibration piece through the vibration transmission body, effective vibration transmission is achieved, and the accuracy of termite detection is improved.

The utility model discloses a multifunctional protective anti-seismic bed which comprises a bed surface and a plurality of bed body supporting columns, the plurality of bed body supporting columns are fixedly connected below the bed surface, and the bed surface comprises a plurality of transverse reinforcing connecting rods and a plurality of longitudinal reinforcing connecting rods. A plurality of inclined reinforcing connecting rods are arranged between every two adjacent longitudinal reinforcing connecting rods in an inclined mode, the transverse reinforcing connecting rods and the longitudinal reinforcing connecting rods are fixedly connected between the bed body supporting columns, and damping devices are fixedly connected to the bottom ends of the bed body supporting columns. According to the anti-seismic bed, a plurality of structures such as the bed surface, the bed body supporting columns, the transverse reinforcing connecting rods, the longitudinal reinforcing connecting rods and the damping devices are combined, the supporting strength and the anti-seismic performance of the bed body in the using process are improved on the basis of the original functions of the bed body, and when an earthquake comes, the anti-seismic bed can bear the strong vibration sense, so that the anti-seismic effect is good. Through the anti-seismic bed structure, the human body can be protected from being hurt, and the life and property safety of people is protected.

To provide a setup for improving the reality of and variations in a vibration sensation.SOLUTION: A vibration control system for controlling a vibration motor at least has: means for acquiring vibration designation data for designating amplitude; means for generating control data on the basis of vibration designation data and controlling a vibration motor by using the control data; and means for determining whether the last control data are zero. In control, generation of control data so as to bring closer to amplitude pertaining to current vibration designation data gradually or generation of control data corresponding to amplitude pertaining to current vibration designation data is selected according to determination.SELECTED DRAWING: Figure 7

An embodiment of the present disclosure provides a vibration sensing device, which may include a vibration sensor and at least one vibration component. The vibration sensor has a first resonant frequency, at least one vibration component may be configured to transmit the received vibration to the vibration sensor, and the at least one vibration component may include a liquid arranged in the target cavity and a plate body forming a part of the cavity wall of the target cavity. The at least one vibration component may provide at least one second resonant frequency for the vibration sensing device, and at least one second resonant frequency may be different from the first resonant frequency.

The application relates to the technical field of image enhancement, in particular to a mine environment super-resolution image reconstruction method based on vibration induction for mine monitoring, which comprises collecting vibration data and image data and performing pretreatment; the processed vibration data sequence is input into a double-layer LSTM network, vibration data is analyzed by using the LSTM, vibration characteristics at the next moment are predicted, and dynamic compensation parameters are generated; the processed image is input into a convolutional neural network constructed by using a blueprint separable convolution, a residual attention module and a coordinate attention mechanism, and multi-scale feature extraction is performed; time alignment of the vibration data and the image data is performed, corresponding compensation parameters are generated, and meanwhile, spatial alignment and fusion of the two are performed to obtain fusion features; based on the fusion features, super-resolution reconstruction is performed on the image to generate a high-resolution image. Through technical fusion innovation, the recognition quality of image quality in a complex vibration scene is significantly enhanced.

The application provides a vibration sensing assembly, which comprises a fixing part for fixing support, a bearing part elastically connected to the fixing part, a functional part fixed to the bearing part, and a driving unit fixed to the functional part, the fixing part comprises an annular frame with a hollow cavity formed inside, at least three spaced apart cantilever beams extending from the inner side of the annular frame towards the hollow cavity, soft elastic blocks fixed between the cantilever beams and the functional part, and two fixed end beams symmetrically distributed on the opposite sides of the hollow cavity, the two ends of the fixed end beams are fixedly connected to the inner side of the annular frame, the middle part of the fixed end beams is spaced apart from the annular frame, the two fixed end beams are parallel to each other, the bearing part is accommodated in the hollow cavity and the two ends of the bearing part are fixed to the middle part of the two fixed end beams respectively. The scheme can realize sufficient vibration sensing and uniform acceleration distribution in a specific direction, and the vibration intensity in other directions is weak, so that the vibration experience is good.