58results about How to "Good piezoelectric effect" patented technology

The present invention relates to a spring leaf-type bistable electromagnetic piezoelectric composite energy collecting device, including a static mechanism and a movable mechanism. The static mechanism comprises a housing, and the housing is internally provided with a bearing bearer, a fixed magnet, an upper coil and a lower coil. The movable mechanism comprises a pendulum frame, a spring piece and a vibration magnet and a spring piece is a V-shaped or U-shaped sheet. In the natural state, the upper and lower ends of the spring piece are in contact with the inner top wall and the inner bottom wall of the housing respectively. The vibration magnet and the fixed magnet are magnetized in the axial direction and repel each other. Under the action of external vibration excitation, the swinging of the pendulum frame drives the rotation of a rotating shaft, and then the spring piece and a piezoelectric element are deformed and the electric charge is generated. The electric energy is outputted through an electrode terminal lead. When the vibration magnet on the pendulum frame swings up and down, the magnetic field around the magnet also moves, the coil in the magnetic field cuts the magnetic induction lines and generates induced current, and the current is output through the lead.

The invention relates to a deposition method capable of enhancing the preferred orientation growth of an AlN film. The deposition method comprises the following steps: adopting an ion beam-assisted deposition technique to prepare an AlN homogeneous transition layer: when using an Ar + ion beam of 2.0-2.5keV / 20-50mA for depositing an Al film in a sputtering way on a substrate, using a moderate-energy N+ ion beam of 20-35keV / 2-8mA for bombarding the Al film in an assisting way; and then depositing the AlN film by adopting magnetron sputtering, wherein base pressure is less than or equal to 5x10<-4>Pa, working air pressure is 0.5-10Pa and substrate temperature is 200 DEG C-500 DEG C. Through pre-depositing the homogeneous transition layer, the invention has the advantages that the internal stress between the film and the substrate can be effectively reduced, the full (002) orientation AlN film is formed, the surface roughness of the film is reduced, the bonding strength between the film and the substrate is increased and the film product can satisfy the requirements on the application in surface acoustic wave devices, acoustic bulk wave devices and other microelectronic devices and power devices.

A piezoelectric element is provided which enables superior piezoelectric effects to be attained while having a comparatively simple structure and being easy to produce. The piezoelectric element according to the present invention includes a plurality of strip-shaped flexible sheets having: a dielectric elastomer layer; and an electrode layer that is stretchable and laminated on the dielectric elastomer layer, the plurality of flexible sheets being superposed crosswise on each other and alternately folded in an accordion shape such that the flexible sheets are alternately stacked. It is preferred that at least one of the plurality of flexible sheets includes a pair of the dielectric layers laminated on front and back face sides of the electrode layer. The pair of flexible sheets are preferably superposed on each other crosswise at substantially right angles. The flexible sheets are preferably stacked to give no less than 10 layers and no greater than 10,000 layers.

The invention relates to a nano lead zirconate titanate / cement piezoelectric composite material used in civil engineering sensors and preparation method thereof. The piezoelectric composite material is composed of nano lead zirconate titanate and cement. The preparation method comprises: blending uniformly nano lead zirconate titanate powder and cement powder and water, pressing the mixture in disc shape, then hydrating, drying. The processed material through polarizing and ageing can be used for preparing civil engineering sensors. The piezoelectric composite material of the invention has better connectivity and well piezoelectric response.

A controllable intelligent magnetorheological piezoelectric vibration isolation support comprises a lower steel plate and an upper cover plate. Magnetorheological liquid is arranged in four grooves inside the lower steel plate. High-magnetic sliding columns are arranged in the grooves. Excitation coils encircle the high-magnetic sliding columns. Meanwhile, a hydraulic telescopic rod is arranged between every two adjacent high-magnetic sliding columns. The tops of the high-magnetic sliding columns are connected with small friction plates. The small friction plates are connected with a large friction plate. The upper portion of a rubber body filled with magnetorheological gels is connected with the large friction plate, and the lower portion of the rubber body is directly connected with the lower steel plate. The upper portion of the large friction plate is connected with the upper cover plate through four rubber laminates. The large friction plate and the upper cover plate bear force stably through an upper force transmission cushion plate, a lower force transmission cushion plate and a supporting steel body filled with piezoelectric stacks. Rubber cushion layers are stuck to the interiors of the two side walls of the upper cover plate. Pressure sensor modules arranged inside the rubber cushion layers are matched with wireless transmission modules arranged on the two sides of the large friction plate. According to the controllable intelligent magnetorheological piezoelectric vibration isolation support, real-time monitoring is achieved, and the vibration isolation support is controlled actively to reset and has the advantages of quick response and high sensitivity.

The invention relates to the technical field of fingerprint identifications, and in particular to an ultrasonic fingerprint identification module group, an ultrasonic fingerprint identification deviceand electronic equipment. The ultrasonic fingerprint identification module group is disposed at an opposite side of one side of a display module for displaying; the ultrasonic fingerprint identification module group includes ultrasonic fingerprint identification modules and a non-conductive substrate; the ultrasonic fingerprint identification modules are stacked on the surface, which is close toa display module, of the non-conductive substrate; each ultrasonic fingerprint identification module includes an upper electrode layer, a piezoelectric layer and a lower electrode layer which are disposed in lamination; the upper electrode layer and the lower electrode layer are respectively disposed on two opposite surfaces of the piezoelectric layer; and the lower electrode layer is close to thenon-conductive substrate. The ultrasonic fingerprint identification module group, the ultrasonic fingerprint identification device and the electronic equipment have the advantages of simple structure, high integration level and thin thickness.

The invention discloses a reticular composite membrane matrix with a porous structure and a preparation method thereof. The reticular composite membrane matrix is prepared by melting, homogenizing andfoaming a composite polymer and a composite filler and then carrying out directional longitudinal and transverse hot melt spinning. The invention further discloses a flexible porous composite membrane material based on the composite membrane matrix and doped with a piezoelectric photocatalytic material and preparation of the flexible porous composite membrane material, the obtained flexible porous composite membrane material has high flexibility, high porosity and high ventilation capacity, and the doped and loaded piezoelectric catalyst can form a piezoelectric effect; the catalytic performance of the photocatalyst under the indoor weak light condition is improved, organic pollutants are effectively degraded, and bacteria resistance and virus killing are achieved; and the film combiningmaterial has excellent mechanical properties, and can tolerate vibration generated by high-frequency airflow for a long time.

The invention discloses a device and a method for monitoring the aging degree of a rubber base plate for a rail structure. The device comprises a monitoring assembly and a signal receiving and processing system, wherein the monitoring assembly is laid below the rubber base plate; the monitoring assembly comprises a piezoelectric sensor; the signal receiving and processing system comprises a data collecting and processing system and a computer, the output end of the piezoelectric sensor is connected with the input end of the data collecting and processing system, and the output end of the data collecting and processing system is connected with the computer through a wireless network. In the process that the rubber base plate for a railway is installed, the flexible piezoelectric sensor is laid below the rubber base plate so as to collect voltage signals converted from instantaneous impact force generated through the rubber base plate when high-speed trains run over, and then the collected voltage signals are transmitted to the computer so as to be processed and compared with electrical signals of non-aging rubber, so that the aging degree of the rubber base plate is accurately monitored on line in real time, and the rubber base plate with high aging degree is replaced in time.

The invention discloses a lead-free piezoelectric film material, which is a ferrocolumbium barium titanate calcium strontium film material with the ingredient and chemical formula of (Ba0.9CaxSr0.1-x)(Ti0.87Nbyfe0.13-y)O3, wherein x in the formula is more than 0 and is less than 0.1, and y is more than 0 and is less than 0.13. The material is obtained by that sol is prepared with an improved sol-gel method, and the sol is subjected to film formation by the spin-coating technology and is annealed. The piezoelectric coefficient d33 of the material is 320pC / N. In addition, the lead-free piezoelectric film material has the advantages of low leakage current, dense surface, even grain size, strong electric hysteresis effect and the like and is free from the microcrack. The lead-free piezoelectric film material has an important meaning for applying the ferroelectric film in the micro-electronics field.

The invention provides an application of a manganese-doped molybdenum sulfide material in self-energized piezoelectric enhanced hydrogen production. The manganese-doped molybdenum sulfide material (Mn-MoS2) comprises a molybdenum sulfide MoS2 material with response to near-infrared light and divalent manganese ions doped in molybdenum sulfide and on the surface of molybdenum sulfide. The manganese-doped molybdenum sulfide material provided by the invention can effectively utilize natural mechanical energy (such as vibration, noise, ultrasonic wave, stirring and the like), takes ammonia boranewith the hydrogen content as high as 19.6 wt% as a hydrogen storage material to prepare hydrogen energy at normal temperature and normal pressure, and realizes self-energized piezoelectric enhanced hydrogen production. The hydrogen fuel can be prepared and used at any time, and the problem that hydrogen is not easy to store is solved. The preparation method of the manganese-doped molybdenum sulfide material provided by the invention is simple, feasible, green and environment-friendly.

The embodiment of the invention discloses a resonance device and an acoustic filter. The resonance device comprises a wafer substrate, a piezoelectric layer and an interdigital electrode layer. The piezoelectric layer is located on one side of the wafer substrate and comprises a piezoelectric single crystal material, and the piezoelectric single crystal material comprises a first crystal axis, a second crystal axis and a third crystal axis which are perpendicular to one another; the direction of an electric field generated by the interdigital electrode layer in the piezoelectric layer is a device direction; wherein the first crystal axis is perpendicular to the wafer substrate, the included angle between the device direction and the second crystal axis is A1, and A1 is larger than or equal to minus 30 degrees and smaller than or equal to 10 degrees; or, the first crystal axis is perpendicular to the wafer substrate, the included angle between the device direction and the second crystal axis is A2, and A2 is larger than or equal to 170 degrees and smaller than or equal to 210 degrees; or, the included angle between the second crystal axis and the direction perpendicular to the wafer substrate is an angle B1, B1 is larger than or equal to-20 degrees and smaller than or equal to 40 degrees, the included angle between the device direction and the first crystal axis is an angle B2, B2 is larger than or equal to-20 degrees and smaller than or equal to 20 degrees; and the working frequency and the performance of the resonator device are improved while the low manufacturing cost of the resonator device is ensured.

The invention discloses a piezoelectricity thick film composite material for medical apparatus and other transducers. The wide application and development of the ultrasonic technique on medical diagnosis, industrial non-destructive detection and hydrophone put forward higher demands for performance of transducer material. The aim is to provide the piezoelectricity thick film material which has both advantages of body material and film material and larger driving force than that of the film, obvious piezoelectricity effect, low working voltage, wide applicable frequency range and compatibility with semiconductor integrated circuit. Preparation according to proportion (moore ratio) of material: Pb3O4 1.9mol, ZrO22.4mol, TiO2 2.4mol, MnO2 0.12mol, Sb2O30.12mol, ZnO0.28mol, Nb2O50.28, SrCO30.3mol. The preparation method is that the materials and little inorganic adhesive are taken to add into an organic carrier and stirred so that the powder is evenly dispersed into solution and forms a slip. The slip is brushed on the base plate with plated electrode, and the thick film is formed by drying and burning. As a result, the piezoelectricity thick film material is prepared by plating electrode and polarization. The invention is not limited to the embodiment and mainly applied in medical apparatus and other transducers.

The invention discloses a method for high-precision measurement of the sphericity of the micro-spherical probe of a nanometer three-coordinate measuring machine. A tungsten probe with large length-to-diameter ratio and a quartz tuning fork are combined. Scanning probe heads with nanometer-level resolution are constructed based on a precision micro stage. During measurement, the two scanning probe heads are driven by the micro stage to scan the large-section contour of a microsphere in the x-axis direction in a differential manner. Radial error generated in the scanning process can be automatically eliminated in a differential manner, and thus, accurate parameters of the large-section contour of the microsphere can be obtained. After the microsphere is rotated a certain angle, the measurement is repeated to acquire multiple sets of parameters of the large-section contour. A three-dimensional spatial contour of the microsphere is constructed through fitting according to feature points obtained. The geometric parameters of the microsphere are calculated based on the three-dimensional spatial contour. Thus, high-precision measurement of the sphericity of the microsphere is realized. The method has the characteristics of small measuring force, wide measuring range, and high measuring precision.

The invention provides an application of a cobalt-doped molybdenum sulfide material in self-energized piezoelectric enhanced hydrogen production. The cobalt-doped molybdenum sulfide material (Co-MoS2)comprises a molybdenum sulfide MoS2 material with response to near-infrared light and divalent cobalt ions doped in molybdenum sulfide and on the surface of molybdenum sulfide. The cobalt-doped molybdenum sulfide material provided by the invention can effectively utilize natural mechanical energy (such as vibration, noise, ultrasonic wave, stirring and the like), takes ammonia borane with the hydrogen content as high as 19.6 wt% as a hydrogen storage material to prepare hydrogen energy at normal temperature and normal pressure, and realizes self-energized piezoelectric enhanced hydrogen production. The hydrogen fuel can be prepared and used at any time, and the problem that hydrogen is not easy to store is solved. The preparation method of the cobalt-doped molybdenum sulfide material provided by the invention is simple, feasible, green and environment-friendly.

A broadband active silencer for an automobile comprises a cylindrical shell. A piezoelectric material layer is coated on the inner wall of the cylindrical shell, a first polyvinylidene fluoride film is coated on the inner wall of the piezoelectric material layer, a rubber layer is coated on the inner surface of the first polyvinylidene fluoride film, a second polyvinylidene fluoride film is coated on the inner surface of the rubber layer, a porous material layer is coated on the inner side of the second polyvinylidene fluoride film, and the first polyvinylidene fluoride film and the second polyvinylidene fluoride film are connected with a controller through leads and dischargers. The two polyvinylidene fluoride films are used for detecting incident sound pressure and reflected sound pressure of the piezoelectric material layer, the controller is used for computing voltage needing to be loaded on piezoelectric materials, the piezoelectric materials can vibrate, the acoustic impedance of the surfaces of the piezoelectric materials is matched with that of air inside the silencer, and energy of noise inside the silencer is completely consumed by the piezoelectric materials, so that the purpose of active noise control is achieved.

The invention relates to the technical field of fingerprint identification, in particular to a display device and electronic equipment. The display device of the invention includes a first piezoelectric module, a display module and a second piezoelectric module. The first piezoelectric module and the second piezoelectric module are disposed on two opposite surfaces of the display module. The display device and the electronic equipment of the invention have the advantages of simple structure and high reliability, and are more in line with the trend of light and thin making and high integrationdegree of the electronic equipment.

A continuous production process for a polytetrafluoroethylene functional film for electro-mechanical energy conversion is disclosed. The process includes a step of thermal bonding a composite film having a micro-porous structure and electrically charging the composite film. The composite film having a micro-porous structure includes one layer of porous polytetrafluoroethylene film sandwiched between two adjacent layers of polytetrafluoroethylene film thermally bonded by two heated rollers. The process also has a step of electrically charging the composite film to obtain a polytetrafluoroethylene piezoelectric electret film. The electrically charging the composite film can be corona-polarizing the composite film by introducing the composite film between an electrode roller and a corona electrode, or introducing the composite film into an electroplating region and attaching electrodes to the upper and lower surfaces thereof, followed by introducing the film to a charging region by a contacting process.

The invention belongs to the technical field of magneto-optic piezoelectric crystal growth and specifically relates to a terbium gallium silicate magneto-optic piezoelectric crystal and a growth method thereof. The terbium gallium silicate magneto-optic piezoelectric crystal has a molecular formula Tb3Ga5SiO14. The preparation method comprises the following steps: (1) synthesis of initial raw materials; (2) single crystal growth; and (3) crystal annealing. By using the preparation method, the terbium gallium silicate magneto-optic piezoelectric crystal with high optical quality, relatively large size and good physical properties can be obtained. The magneto-optic crystal has good magneto-optic and piezoelectric effects and has a Verdet constant being higher than that of a terbium-doped glass and terbium gallium garnet (TGG) crystal commercially applied at present. Meanwhile, the magneto-optic piezoelectric crystal disclosed by the invention is on a 400-1500 nm waveband and shows relatively high transmittance on other wavebands except for a 485 nm waveband near where there is a characteristic absorption peak of Tb<3+> ions. In addition, the magneto-optic piezoelectric crystal disclosed by the invention is a congruent molten compound capable of growing by adopting a medium-frequency induction pulling method, and the growth process is simple, short in period and capable of realizing large-scale mass production with low cost.

The invention provides an application of a nickel-doped molybdenum sulfide material in self-energized piezoelectric enhanced hydrogen production. The nickel-doped molybdenum sulfide material (Ni-MoS2)comprises a molybdenum sulfide MoS2 material with response to near-infrared light and divalent nickel ions doped in molybdenum sulfide and on the surface of molybdenum sulfide. The nickel-doped molybdenum sulfide material provided by the invention can effectively utilize natural mechanical energy (such as vibration, noise, ultrasonic wave, stirring and the like), takes ammonia borane with the hydrogen content as high as 19.6 wt% as a hydrogen storage material to prepare hydrogen energy at normal temperature and normal pressure, and realizes self-energized piezoelectric enhanced hydrogen production. The hydrogen fuel can be prepared and used at any time, and the problem that hydrogen is not easy to store is solved. The preparation method of the nickel-doped molybdenum sulfide material provided by the invention is simple, feasible, green and environment-friendly.

The invention provides an application of a strontium-doped molybdenum sulfide material in self-energized piezoelectric enhanced hydrogen production. The strontium-doped molybdenum sulfide material (Sr-MoS2) comprises a molybdenum sulfide MoS2 material with response to near-infrared light and divalent strontium ions doped in molybdenum sulfide and on the surface of molybdenum sulfide. The strontium-doped molybdenum sulfide material provided by the invention can effectively utilize natural mechanical energy (such as vibration, noise, ultrasonic wave, stirring and the like), takes ammonia boranewith the hydrogen content as high as 19.6 wt% as a hydrogen storage material to prepare hydrogen energy at normal temperature and normal pressure, and realizes self-energized piezoelectric enhanced hydrogen production. The hydrogen fuel can be prepared and used at any time, and the problem that hydrogen is not easy to store is solved. The preparation method of the strontium-doped molybdenum sulfide material provided by the invention is simple, feasible, green and environment-friendly.

The invention provides a piezoelectric device and a manufacturing method thereof, an electronic device and a control method, and relates to the technical field of piezoelectric devices. The piezoelectric device has bendability, can be bent, and comprises a flexible substrate and a plurality of piezoelectric units arranged on the flexible substrate in an array mode, wherein each piezoelectric unitcomprises a first electrode, a piezoelectric part and a second electrode which are sequentially stacked on the flexible substrate, and the piezoelectric part is made of a rigid material. The method issuitable for manufacturing the piezoelectric device.

The invention provides an application of an iron-doped molybdenum sulfide material in self-energized piezoelectric enhanced hydrogen production. The iron-doped molybdenum sulfide material (Fe-MoS2) comprises a molybdenum sulfide MoS2 material with response to near-infrared light and divalent iron ions doped in molybdenum sulfide and on the surface of molybdenum sulfide. The iron-doped molybdenum sulfide material provided by the invention can effectively utilize natural mechanical energy (such as vibration, noise, ultrasonic wave, stirring and the like), takes ammonia borane with the hydrogen content as high as 19.6 wt% as a hydrogen storage material to prepare hydrogen energy at normal temperature and normal pressure, and realizes self-energized piezoelectric enhanced hydrogen production.The hydrogen fuel can be prepared and used at any time, and the problem that hydrogen is not easy to store is solved. The preparation method of the iron-doped molybdenum sulfide material provided by the invention is simple, feasible, green and environment-friendly.

The embodiment of the invention discloses a resonance device and a filter. The resonance device comprises a wafer substrate, a piezoelectric layer and an interdigital electrode layer. The piezoelectric layer comprises a piezoelectric single crystal material; the main positioning edge of the wafer substrate is located in a first direction, and the piezoelectric single crystal material comprises a first crystal axis, a second crystal axis and a third crystal axis; the first crystal axis is perpendicular to the wafer substrate, or the first crystal axis is parallel to the wafer substrate, and the included angle between the first crystal axis and the first direction is smaller than or equal to 30 degrees, or larger than or equal to 60 degrees and smaller than or equal to 120 degrees; and the second crystal axis is parallel to the wafer substrate, and the included angle between the second crystal axis and the first direction is smaller than or equal to 60 degrees, or the included angle between the second crystal axis and the direction perpendicular to the wafer substrate is larger than or equal to 120 degrees and smaller than or equal to 135 degrees. According to the technical scheme, the advantage of low cost of the resonator device is guaranteed, the performance and the working frequency of the resonator device are improved, the performance of the band-pass filter comprising the resonator device is improved, and the requirement of the 5G communication standard is met.

The invention relates to a kind of double-structure, multi-functional pressing engine, including high-pressure bar, pressure-adjusting pole, pressure-exchanging pole, prying pole, semimonthly fork, the big rack, spring piece, spring hook, connecting rod, gyro wheel, hanging tracks, hanging wheel, main shaft, round shaft, support, brakes, and so on. On the component that consists of double-structure set up the connection of self-anti-elastic, self-pushing and self-rotating. That can develop the energy-supporting functions, such as generating electricity, transporting, and the effective energy-saving efficiency.

The invention discloses a novel push-pull type efficient broadband acoustic optical modulator and a preparation method thereof. The acoustic optical modulator comprises a substrate, a lithium niobate-chalcogenide glass heterogeneous layer arranged on the substrate and an interdigital transducer arranged on a lithium niobate film. The lithium niobate-chalcogenide glass heterogeneous layer comprises a lithium niobate film and a chalcogenide optical waveguide heterogeneously integrated on the lithium niobate film; the interdigital transducer arranged on the lithium niobate film comprises a plurality of interdigital electrodes, and the interdigital transducer is a focusing type interdigital transducer or a dual-electrode interdigital transducer with different lengths. According to the invention, the focused interdigital transducer is used to excite the convergent surface acoustic wave, sound wave energy is fully utilized, and the change amount of the refractive index of the optical waveguide is improved; or double-electrode interdigital transducers with different lengths are used, so that the problem of electrode reflection is effectively solved, and the microwave working bandwidth is improved; the acousto-optic modulator has the advantages of being high in modulation efficiency, easy to manufacture, large in bandwidth, high in speed and easy to achieve on-chip large-scale integration.

The invention discloses a tough cement-based piezoelectric composite material, a preparation method and application thereof. The composite material is prepared by dispersing perovskite piezoelectric crystals and cement in certain proportion into a PVDF-based piezoelectric material. The composite material not only has excellent piezoelectric properties, but also has high toughness and good compatibility with a concrete material, and solves the problems of high brittleness and poor combination with overall concrete structure in existing cement-based piezoelectric materials. Also the composite material can be applied to preparation of a sensor for a concrete building structure in civil engineering, the prepared sensor has high sensitivity and sensing precision, and potential safety hazards are reduced.

A radio transducer consists of kynar piezoelectric film; microprocessing unit module formed by microprocessor, crystal oscillation circuit, A / D modulation circuit and filtering circuit; and radio transmit - receive module. It is featured as setting kynar piezoelectric film on structure to be tested, mocroprocessing unit module and radio transmit - receive module in the same shell for using one power supply; connecting microprocessor UART port to radio communication module and kynar piezoelectric film to wire of inputting - microprocessing unit module.

The invention relates to a preparation method of a high-efficiency bone repair material and belongs to the technical field of preparation of artificial medical materials. The preparation method in theinvention comprises the following steps: mixing calcium chloride and barium chloride serving as raw materials to obtain a mixed solution; carrying out an ultrasonic oscillating reaction of the mixedsolution and EDTA (Ethylene Diamine Tetraacetic Acid) to produce self-made complexing liquor; carrying out a reaction of absolute ethyl alcohol and phosphorus pentoxide to produce phospholipid, and gradually hydrolyzing the phospholipid to obtain a precursor solution under the effect of ammonium hydroxide; dropping the self-made complexing liquor into the precursor solution to obtain a hydroxy calcium phosphate skeleton, wherein along with the reaction, after the calcium ion and phospholipid are bound to be saturated, one part of barium ions are bound with hydroxyl on the surface of hydroxy calcium phosphate so as to obtain hydroxy calcium phosphate doped with a small amount of barium ions; dissolving tetrabutyl titanate into ethanol, carrying out a blending reaction of the tetrabutyl titanate and the hydroxy calcium phosphate doped with a small amount of barium ions, introducing a titanium source into hydroxy calcium phosphate, and finally calcining, thereby obtaining the high-efficiency bone repair material. The high-efficiency bone repair material prepared by the preparation method disclosed by the invention is capable of realizing high-efficiency repair after transplantation and has wide application prospects.

The present invention relates to a spring leaf-type bistable electromagnetic piezoelectric composite energy collecting device, including a static mechanism and a movable mechanism. The static mechanism comprises a housing, and the housing is internally provided with a bearing bearer, a fixed magnet, an upper coil and a lower coil. The movable mechanism comprises a pendulum frame, a spring piece and a vibration magnet and a spring piece is a V-shaped or U-shaped sheet. In the natural state, the upper and lower ends of the spring piece are in contact with the inner top wall and the inner bottom wall of the housing respectively. The vibration magnet and the fixed magnet are magnetized in the axial direction and repel each other. Under the action of external vibration excitation, the swinging of the pendulum frame drives the rotation of a rotating shaft, and then the spring piece and a piezoelectric element are deformed and the electric charge is generated. The electric energy is outputted through an electrode terminal lead. When the vibration magnet on the pendulum frame swings up and down, the magnetic field around the magnet also moves, the coil in the magnetic field cuts the magnetic induction lines and generates induced current, and the current is output through the lead.