46 results about "Ambient vibration" patented technology

The invention relates to the technical field of environmental vibration reduction and isolation control, and discloses a vibration isolation pile, a row pile structure and a construction method of the vibration isolation pile, the vibration isolation pile comprises sleeves arranged between a subway tunnel and a basement, at least two sleeves are sequentially nested from outside to inside, and an annular filling space is formed between every two adjacent sleeves; a core filling space is formed in the inner cavity of the innermost sleeve; the annular filling space and the core filling space are divided into a plurality of vibration isolation sections in the height direction of the annular filling space and the core filling space, and each vibration isolation section corresponds to a soft soil layer or a hard soil layer on the outer side; in each vibration isolation section, the annular filling space and the core filling space are each internally provided with a rigid vibration isolation layer or a flexible vibration isolation layer, and the rigid vibration isolation layers and the flexible vibration isolation layers are alternately arranged in the radial direction of the casing pipe. The technical problems that in the prior art, the vibration isolation effect of a vibration isolation pile is the same, vibration isolation cannot be conducted according to vibration propagation characteristics and vibration isolation requirements of different soil layers, and the vibration isolation effect of the vibration isolation pile is poor are solved.

The invention relates to a dielectric elastomer-piezoelectric composite multi-source energy collection device for a non-intrusive electric field sensor, and belongs to the technical field of power system self-powered sensors. The device comprises a base, a dielectric elastomer unit, a piezoelectric cantilever beam, a mass block and a rectification energy storage circuit. The dielectric elastomer deforms under the action of an alternating electric field, the piezoelectric cantilever beam is driven through coupling to generate mechanical vibration, and the piezoelectric layer further converts mechanical energy into electric energy to be output. The resonant frequency of the system is adjusted by setting the mass block, so that the resonant frequency is matched with the external electric field frequency or the environment vibration frequency, and the energy conversion efficiency is optimized. The device can collect external electric field energy in a non-intrusive mode and provide a stable power supply required by a low-power-consumption sensor. The device is compact in structure, high in sensitivity and suitable for electric field monitoring in scenes such as ultrahigh-voltage power transmission lines and transformer substations, and provides reliable energy support for self-powered sensors of power equipment.

The invention relates to the field of intelligent sensing systems, in particular to a power transmission line tower inclination monitoring method, device and system, and the method comprises the steps: collecting a time domain FBG electric signal and a reflection spectrum of a power transmission line tower state through a fiber grating sensor; calculating a first vibration characteristic and a second vibration characteristic of the FBG electric signal, wherein the first vibration characteristic and the second vibration characteristic are used for representing significance of interference of environment time domain vibration and high-frequency vibration on the FBG electric signal; adaptively adjusting the number of decomposition layers according to the vibration characteristics; decomposing the reflectance spectrum through a variational mode decomposition algorithm, and screening IMF components related to the original signal for reconstruction to obtain a denoised reflectance spectrum; and calculating the inclination angle of the tower according to the central wavelength of the denoised reflection spectrum and the measurement data of the fiber grating sensor. According to the invention, the number of decomposition layers is adaptively adjusted according to the interference degree of environment vibration on the current measurement signal, the fiber grating sensor is ensured to obtain the accurate measurement signal, and the accuracy of power transmission line tower inclination monitoring is improved.

The invention provides a photoacoustic gas measurement method and a photoacoustic gas measurement system based on a series sensibilization technology, and relates to the technical field of optical gas sensing. The first-stage light absorption enhancement structure is used for carrying out maximum photoacoustic conversion on target gas to generate an initial photoacoustic pressure signal, the second-stage acoustic resonance structure is introduced to carry out resonance amplification on sound waves with specific frequency, a tandem cascade sensibilization framework of light absorption enhancement and acoustic resonance amplification is constructed, and through mutual verification analysis, the sensitivity of the target gas is improved. Calculating coherence outside preset noise analysis frequency band data, identifying and inhibiting common-mode noise interference caused by environment vibration and the like, generating feedback control parameters while calculating final gas concentration, adaptively adjusting intensity modulation frequency and wavelength modulation depth, and realizing high-precision and high-precision measurement. The measurement reliability, the dynamic range and the adaptive capacity of the system under complex working conditions are improved, and multiplier-level breakthrough of the sensitivity of the system and collaborative optimization of the performance are achieved.

The application provides a filtering optimization method and system for an inertial measurement unit fiber-optic gyroscope. The three-dimensional vibration signal of the inertial measurement unit fiber-optic gyroscope is collected, and the vibration modal characteristic data is generated through short-time Fourier transform. The magnetic field strength of the gyroscope is dynamically adjusted according to the data, and the environmental vibration energy is converted into current data based on the adjusted magnetic field strength. The original angular velocity data output by the gyroscope is combined, a double-channel convolutional neural network is used to extract first and second noise features from the current data and the original angular velocity data respectively, and preliminary denoising data is output after fusion. The preliminary denoising data is subjected to variational modal decomposition, and the effective modal components are selected according to a preset kurtosis rule to obtain target angular velocity data, which is used to realize filtering optimization of the gyroscope. The technical scheme provided by the application improves the measurement accuracy and filtering optimization effect of the inertial measurement unit fiber-optic gyroscope.

The invention belongs to the technical field of survey and measurement, and particularly relates to a total station for diversion engineering tunnel construction, the total station comprises a total station body, the lower end of the total station body is symmetrically and fixedly connected with two supporting plates, the lower ends of the two supporting plates are fixedly connected with the same annular bearing plate, and the annular bearing plate is fixedly connected with the lower end of the total station body. The device further comprises a multi-stage anti-shake mechanism, a machine body posture locking mechanism, an air curtain forming protection mechanism, an anti-vibration sealing enhancement mechanism, a three-axis acceleration sensor and an environment vibration standard indicating lamp. Direct transmission of construction environment vibration to the total station can be effectively blocked, the damping strength of the multi-stage anti-shake mechanism and the sealing strength of the lens are adaptively regulated and controlled according to the real-time vibration strength, the proper measurement time period is visually prompted through the indicator lamp, the total station can be limited and fixed during measurement, a conical air curtain protection layer can be automatically formed, and the measurement efficiency is improved. The adverse effects caused by vibration damage and dust attachment are avoided, and the measurement precision and the equipment operation stability are comprehensively guaranteed.

Method for determining a static bending stiffness (C B,stat ) of an object (1) which is vibrationally decoupled from an environment and arranged on at least two support means (2, 3), from dynamic acceleration measurements after vibration excitation of the object (1), comprising the steps a) Establishing a plurality of force application points (4) on the object (1), b) Arranging a number of accelerometer means (5) on the object (1), c) Exciting the object (1) at the force application points (4) determined in step a) using vibration generating means and determining a number of frequency response functions from the accelerations measured using the acceleration sensor means (5), d) Calculating an acceleration vector of the object (1) from the frequency response functions obtained in step c), e) Calculating a displacement vector from the acceleration vector determined in step d), f) Calculating a number of dynamic bending stiffness curves from the forces acting at the force application points (4) and the deflections of the object (1) induced by the displacements with the displacement vector, g) Extrapolating at least one of the dynamic bending stiffness curves obtained in step f) to a frequency f=0 Hz to obtain the static bending stiffness (C B,stat ) of the object (1).

This invention relates to the field of optical experimental equipment technology, and particularly to an optical experimental turntable, comprising a base, a rotary worktable mounted on the base, and a drive module disposed on one side of the rotary worktable; the optical experimental turntable also includes an aperture adjustment unit, which is disposed at the upper end of the rotary worktable and used to change the aperture of the light-gathering hole on the rotary worktable. The buffer unit used in this invention can perform two-stage vibration reduction; the vibration damping medium within the buffer frame can release the vibration kinetic energy transmitted by the base through its own vibration, significantly reducing the vibration transmission path. Combined with the elastic buffering effect of the buffer spring, it effectively isolates the interference of external environmental vibration and the vibration of the equipment itself on the optical path.

The invention discloses an anti-vibration pose compensation support and vision measurement equipment, and relates to the technical field of structure monitoring equipment, the anti-vibration pose compensation support comprises a supporting structure, a motion pose measurement mechanism and a motion compensation mechanism, the supporting structure comprises a base and an outer ring frame, an inner ring frame is arranged in the outer ring frame, and a workbench is arranged in the inner ring frame; the moving posture measuring mechanism detects the position change of the base; a first driving assembly of the motion compensation mechanism drives the outer ring frame to move, a second driving assembly drives the inner ring frame to move, and a third driving assembly drives the workbench to move. Kinematics parameters of the supporting structure are collected in real time through the motion posture measuring mechanism, six-degree-of-freedom posture adjustment is achieved through the motion compensation mechanism, posture deviation of the supporting structure is adjusted, environment disturbance is dynamically compensated, it is ensured that the posture of the vision measuring instrument is constant, disturbance influences of factors such as wind loads and environment vibration on the vision measuring instrument are avoided, and the measurement accuracy is improved. The problem that the measurement precision of the vision measurement instrument is reduced due to vibration in a complex environment is solved.

The invention discloses a sensor-based plate thickness adaptive adjustment system, which comprises a multi-source sensing fusion acquisition module, a dynamic parameter adjustment calculation module and a closed-loop feedback execution module. The multi-source sensing fusion acquisition module comprises a laser displacement sensor, a vibration sensor, a temperature sensor and a tool wear sensor which are respectively used for acquiring a plate thickness original signal, a processing environment vibration signal, a processing area environment temperature signal and a tool accumulated wear loss signal; the dynamic parameter adjustment calculation module receives the signal and calculates a machining parameter adjustment instruction; the closed-loop feedback execution module comprises a servo controller and an execution mechanism, and the execution mechanism adjusts the machining action under the control of the servo controller. According to the system, the problems of inaccurate thickness measurement and parameter adjustment lag caused by multi-factor interference in the prior art are solved, and the plate processing quality and consistency are improved.

The present application belongs to the field of vibration power generation. It relates to a vibration pickup component for vibration power generator, which is composed of a square frame, a support, a vibrator swinging around a point above the center of gravity, and a anti-dropping assembly. It mainly plays the role of expanding the frequency band and picking up low vibration energy. It also relates to a vibration pickup device for electromagnetic vibration power generator and a vibration pickup device for composite vibration power generator, which are both composed of a vibration pickup component and a gimbals. Both of them can make the vibration pickup component pick up the omnidirectional external excitation. The latter also produces multiple types of feedback actions for various power generation units. It also relates to an electromagnetic vibration power generator and a composite vibration power generator. The former is composed of a vibration pickup device for electromagnetic vibration power generator, a permanent magnet, etc. The latter is composed of a vibration pickup device for composite vibration power generator, a permanent magnet, a piezoelectric and friction power generation unit, a wheel disc type friction nano power generation unit, etc. Both of them improve the power generation efficiency of picking up environmental vibration energy.

The utility model relates to the technical field of radon gas detection, in particular to an intelligent sensor which is used for detecting radon gas and has an anti-vibration function. Comprising an ion pulse ionization chamber and a detection assembly in the ion pulse ionization chamber, a main control circuit board is arranged at the upper end of the ion pulse ionization chamber, the detection assembly is connected to the main control circuit board, a vibration sensor is fixedly arranged on the main control circuit board, the vibration sensor is arranged on the main control circuit board, the model of the vibration sensor is SW-18015PZR-10G12B3, and the detection assembly is connected to the detection assembly. When environment vibration or real object vibration occurs, the vibration sensor transmits a switching value signal to the main control circuit board, the main control circuit board receives the switching value signal of the vibration sensor, and at the moment, the main control circuit board controls other units to stop working. And the service life and the stability of the radon gas sensor are well protected.

The invention belongs to the technical field of water conservancy project infrastructure and environment vibration control, and discloses a vibration isolation structure system for the surrounding area environment of a pumped storage power station. The vibration isolation structure system comprises a vibration isolation barrier arranged on the periphery of a target protection building; the vibration isolation barrier comprises a plurality of local resonance units which are annularly arranged at intervals, and the local resonance units are buried underground; the vibration isolation ditch is arranged on the periphery of the target protection building; the outline of the cross section of the vibration isolation trench is narrowed in a stepped manner along with the increase of depth; and the vibration isolation foundation is arranged at the bottom of the target protection building and used for supporting the target protection building. According to the invention, by setting a multi-level cooperative control strategy of near-field isolation-basic vibration isolation-wave resistance barrier, multi-level dissipation and effective obstruction of vibration energy are realized, the vibration isolation effect is remarkably improved, and especially the isolation performance for low-frequency vibration and earth surface Rayleigh waves (R waves) is improved.

The application discloses a discrete doll-in-doll type periodic vibration reduction and isolation pile and a laying method thereof, and comprises: a plurality of discrete doll-in-doll type vibration reduction and isolation single piles arranged according to a square lattice; each single pile structure comprises a local resonance concrete layer, a rubber soft layer and a steel pipe wrapping layer which are sequentially and multi-layered nested; the single pile as a whole presents a doll-in-doll type structure, and the cross section of each single pile is circular, and the rubber soft layer is arranged in a discrete type along the ring direction. The pile utilizes the band gap characteristics of the periodic structure to inhibit environmental vibrations with frequencies in the attenuation domain range, so as to reduce the adverse effects of environmental vibrations such as rail transit operation and earthquakes; the pile can break the limitation that the traditional periodic vibration reduction and isolation pile is not conducive to isolating low-frequency vibration waves in a limited site; the pile can make up for the defect that the traditional periodic vibration reduction and isolation pile can only isolate vibrations in a single frequency band, and realizes multi-frequency band vibration reduction and isolation application; the pile has strong geometric variability, can be targeted to attenuate environmental vibrations in different frequency bands, and has good durability and high operability.

The invention discloses a magnetoelectric vibration energy harvesting system capable of power optimization, which comprises a magnetoelectric vibration energy harvester and a magnetoelectric vibration energy harvesting circuit, and is characterized in that the magnetoelectric vibration energy harvesting circuit comprises an energy harvesting module, an accelerometer and a microcontroller module, the micro-controller module is connected with the accelerometer, the micro-controller module and the accelerometer are powered by direct-current voltage, the accelerometer senses environment vibration and generates a corresponding acceleration signal, and the micro-controller module determines open-circuit voltage of the magnetoelectric vibration energy harvester according to angular frequency of the square wave signal and amplitude of the acceleration signal and outputs the open-circuit voltage of the magnetoelectric vibration energy harvester according to the amplitude of the acceleration signal. Controlling the output power of the energy capture module by adopting a fractional order open-circuit voltage method to realize maximum power transmission; the device has the advantages that maximum power transmission is realized by adopting a fractional order open-circuit voltage method, the energy transmission process does not need to be interrupted, and the device has a fast dynamic response characteristic and a high energy harvesting effect.

The invention relates to transforming microphone data into accelerometer data. In a method for transforming microphone data into accelerometer data, microphone data is received. A device-specific filter is applied to the microphone data to generate first data, the device-specific filter for transforming the microphone first data according to characteristics of the device. The first data is expanded by adding sensor noise to the first data to generate second data, the sensor noise characterizing noise inherent to the device. The second intermediate data is expanded by adding ambient vibration noise defining an environment in which use of the device is simulated to generate accelerometer data.

The invention provides a vibration source test identification method and system based on a visual system, and relates to the technical field of rail transit vibration monitoring. Screening grating deformation images which are synchronous with impact excitation and have signal-to-noise ratios reaching a preset condition from the image sequence to form an effective image subset, obtaining displacement vector data of each monitoring point on the surface of the monitored object through phase analysis and three-dimensional reconstruction, and mapping the displacement vector data into physical space displacement time history data; and processing the displacement time history data value to generate an acceleration time history and extract visual vibration characteristics, reversely solving the visual vibration characteristics in combination with a vibration wave propagation model, and determining the spatial position, the action time history and the frequency component of the vibration source, so that accurate identification and parameter determination of the rail transit environment vibration source can be realized.

A control method is considered for use in controlling one or more transducers of an automobile, the control method comprising: generating, for a haptic event having a haptic output, an audio / visual control signal for at least one audio / visual transducer of the one or more transducers so that at least a corresponding audio or visual output accompanying the haptic output is a function of a level of ambient vibration in an operational environment of the one or more transducers, wherein the operational environment is an automotive environment.

The invention provides a rail transit environment vibration analysis method, system and device and a medium, and belongs to the technical field of rail transit engineering.The method comprises the steps that a rail transit environment vibration analysis problem of a target site is obtained; inputting the physical indexes into a pre-trained deep learning prediction model, and outputting a corresponding vibration time sequence curve prediction result; inputting horizontal distance information contained in the problem into a pre-trained vibration parameter regression model, and outputting a corresponding vibration amplitude and vibration level prediction result; performing semantic retrieval on the vibration analysis problem in a pre-constructed environment vibration field text knowledge base to obtain related professional analysis knowledge; and based on the vibration time sequence curve prediction result, the vibration amplitude and vibration level prediction result and professional analysis knowledge, generating an environmental vibration analysis result through a preset large language model. According to the method, the problem of low end-to-end automation degree of rail transit environment vibration from data prediction to professional analysis and suggestion generation is solved.

This invention provides a vibration power generation device that can maximize output by automatically adjusting the resonant frequency of the vibration power generation element to follow changes in the frequency of environmental vibrations. [Solution] A vibration power generation device (100) comprising a vibration power generation element (10) having a fixed electrode (12) which is a first electrode, a movable electrode (11) which is a second electrode facing the fixed electrode (12), and an elastic support part (14) which elastically supports the movable electrode (11) with respect to the fixed electrode (12) so that it can move relative to it, and a frequency tracking means that makes the resonance frequency of the vibration power generation element (10) follow the environmental vibration frequency (fe).

The application relates to a modular fan device, a modular fan assembly and a use method thereof, and belongs to the technical field of air-cooled heat dissipation of electronic equipment. The application solves the problem that the vibration transmission between a fan and a case causes the fan to be damaged, and the problem that the workload is large when the whole electronic equipment fan is maintained or replaced. Meanwhile, the fan assembly can be modularized to adapt to different needs, the fan assembly is convenient to maintain, the vibration is isolated, and the fan assembly is not sensitive to environmental vibration. The modular fan assembly for electronic equipment is composed of several vibration-isolated fan modules through modular interfaces; each modular fan device comprises a fan cover, a fan body and a vibration isolation system; two kinds of modular interfaces which can be matched and interconnected are arranged on the fan cover, so that the modular fan devices can be assembled at will; and the vibration-isolated fan module is further provided with two kinds of electrical interfaces which can be internally connected for power supply. The application can isolate the vibration generated by the fan during operation from the electronic equipment; meanwhile, various combination modes can be formed to adapt to different needs, and the fan is convenient to maintain and replace.

This utility model provides an intelligent seismic-resistant and shock-absorbing support for building engineering, belonging to the field of seismic support technology. It includes a frame, with a seismic-absorbing fixing component inside the frame to secure building pipelines against vibration, and a stabilizing component at the bottom of the frame to buffer the pipelines. This utility model achieves intelligent seismic resistance and shock absorption for building pipelines through its seismic-absorbing fixing component. Vibration sensors monitor the environmental vibration frequency in real time, transmitting the collected vibration data to a controller. Based on the real-time vibration characteristics, the controller adjusts the damping coefficient of the electric damper, achieving adaptive seismic resistance and vibration reduction. This not only provides precise response to vibrations of different frequencies and intensities but also significantly improves the seismic performance and safety of building pipelines.

The invention discloses a rapid butt joint and disengagement method for a vertical vibration comprehensive test box, and the method comprises the steps: driving an environment simulation box to move through a moving mechanism during butt joint, and enabling a bottom interface to be accurately aligned and physically connected with a vertical vibration table in the vertical direction; and then the rapid sealing coupling device arranged at the interface is operated to realize rapid locking and sealing between the two. When the device is released, the device is operated to release locking and sealing, and then the moving mechanism is controlled to enable the environment simulation box to move away from the vibration table. According to the method, through cooperation of the moving mechanism and the rapid sealing coupling device, the operation efficiency is remarkably improved. And by adopting a double-sealing design of compression sealing and flexible compensation, reliable sealing in an extreme test environment is ensured, and vibration transmission is effectively isolated. According to the invention, rapid combination and separation of the environment simulation box and the vertical vibration table are realized, so that the environment simulation box and the vertical vibration table can be combined for comprehensive environment vibration test and can also operate independently, equipment functions are expanded, and use flexibility is improved.

The invention relates to the technical field of cultural relic and important exhibit protection, and discloses an exhibit cabinet with a double-layer orthogonal horizontal translation seismic isolation structure and an energy consumption limiting function. The exhibit cabinet comprises a bottom rigid partition plate, a middle rigid partition plate, an upper rigid partition plate, an exhibit appearance cabinet body, a double-layer scissor type horizontal translation mechanism, a shock absorption and isolation cushion block, an energy consumption anti-collision strip, an external enclosure cabinet body and a bottom balancing weight. The first layer of horizontal translation seismic isolation mechanism is arranged between the bottom rigid partition plate and the middle rigid partition plate, the second layer of horizontal translation seismic isolation mechanism is arranged between the middle rigid partition plate and the upper rigid partition plate, and the two layers of mechanisms are orthogonally arranged in the horizontal plane; each layer of mechanism is composed of scissor type translation units which are arranged side by side in the left-right direction, each translation unit is of a multi-hinge-point closed constraint structure formed by hinging a plurality of long rods, short rods and shaft pins, and approximate pure translation of the upper structure relative to the lower structure is achieved. A shock absorption and isolation cushion block is arranged below the bottom rigid partition plate to provide vertical flexible support; energy dissipation anti-collision strips are arranged on the periphery to conduct compression energy dissipation and limiting under the large-displacement working condition; the balancing weight is arranged on the lower portion to lower the overall gravity center and improve the anti-overturning capacity. Low-rigidity translational vibration isolation can be achieved in the two orthogonal horizontal directions, the vertical vibration reduction function and the tail end energy dissipation limiting function are achieved, the influence of earthquakes and environment vibration on exhibits is effectively reduced, and the anti-overturning performance and the safety protection performance of the exhibits with the high gravity center are improved.

The application discloses a global compaction degree nondestructive evaluation method, system, device and medium based on multi-machine vibration signal coupling analysis, comprising the following steps: acquiring detection data of a current period; calculating a local reference wave field according to excitation signal information of each rolling device and a first correlation model; integrating the local reference wave field to obtain a global reference wave field of a construction area based on excitation signal information corresponding to an overlapping grid corresponding to a plurality of local reference wave fields; determining listening parameters of excitation waves of other rolling devices listened to by each rolling device; filtering non-designated environment vibration signals to obtain filtered signals based on the listening parameters; determining transmission parameters of vibration waves across the rolling devices, and forming a supplementary wave field according to the transmission parameters; determining an actual compaction distribution map of a rolling grid in the construction area based on the global reference wave field and the supplementary wave field; determining a priority according to the actual compaction distribution map; and planning a rolling route and rolling parameters of each rolling device in a next period.

This invention discloses an intelligent control method and system for the construction quality of UHPC wet joints, specifically relating to the field of automatic control technology for construction processes. It addresses the problem of inaccurate control caused by environmental vibration interference in existing wet joint construction. The method involves collecting vibration signals from multiple preset locations on the wet joint structure, extracting first-type frequency domain features related to construction operations and second-type frequency domain features related to environmental disturbances, identifying vibration types based on feature energy distribution and transient characteristics, analyzing the attenuation gradient of energy values ​​with distance when identified as construction vibration to assess structural coupling, evaluating the concentration of the first-type frequency domain features based on structural coupling to assess construction vibration stability, adjusting the control parameters of the vibration equipment, and finally executing the adjusted control parameters to control the vibration operation, thereby achieving intelligent control of the construction quality of wet joints.

This invention belongs to the field of fiber optic sensing technology, specifically relating to a vibration reduction system for reducing the impact of environmental vibration noise on distributed fiber optic acoustic wave sensing equipment. The vibration reduction system includes a passive vibration reduction unit, an active vibration reduction unit, a vibration monitoring unit, and a DAS demodulation and vibration reduction unit. The vibration monitoring unit includes a vibration sensor that collects three-dimensional vibration information of the laser body. The active vibration reduction unit includes four planar piezoelectric actuators, a vibration feedback control module, and a Z-axis piezoelectric actuator. The DAS demodulation and vibration reduction unit includes a DAS demodulation device and a reference fiber roll. This invention effectively solves the problem of vibration interference affecting the demodulation output of the laser body in DAS equipment by combining multiple passive vibration reduction, active vibration reduction, vibration monitoring, and DAS demodulation calculation for vibration reduction.

The utility model discloses a capacitor noise test box which comprises a box body, a box door hinged to the side wall of the box body, an adjusting assembly arranged at the top of an inner cavity of the box body, a sound receiver arranged at the top of the inner cavity of the box body, and a plurality of vibration reduction assemblies arranged at the bottom of the box body. A motor is turned on to drive a rotating shaft to rotate, so that a winding roller drives a pull rope to wind, then the position of a moving seat is adjusted, noise attenuation data of the capacitor changing along with the distance is conveniently tested, an electric push rod is turned on to drive a connecting plate to move, a clamping block moves to clamp a gear, locking is facilitated, and the capacitor is prevented from sliding down; the box body drives the supporting block to vibrate, buffering and vibration reduction are facilitated through the vibration reduction assembly, and the influence of a sound source caused by external environment vibration on a noise test result is conveniently reduced.

Provided is a vibration power generation device in which the resonance frequency of a vibration power generation element automatically follows the frequency change of ambient vibration, thereby enabling maximization of output. A vibration power generation device (100) is characterized by being provided with: a vibration power generation element (10) provided with a fixed electrode (12) as a first electrode, a movable electrode (11) as a second electrode facing the fixed electrode (12), and an elastic support section (14) that elastically supports the movable electrode (11) and enables the movable electrode (11) to move relative to the fixed electrode (12); and a frequency following means for causing the resonance frequency of the vibration power generation element (10) to follow the ambient vibration frequency (fe).