588results about "Friction generators" patented technology

The invention discloses a bionic TENG sensor unit for an artificial throat and a preparation method thereof, and relates to the field of artificial throats, and the sensor unit comprises a gradient micro-dome friction layer, a strain amplification layer, an electrode layer and a back cavity substrate layer. The gradient micro-dome array realizes gradual contact through gradient change of height and diameter; the strain amplification layer converts vertical vibration into horizontal strain by using a cantilever beam-sliding block structure; the back cavity array selectively amplifies vibration at a specific frequency based on the Helmholtz resonance principle. The invention further provides a corresponding preparation method. The preparation method comprises the steps of back cavity forming, electrode deposition, microstructure manufacturing, surface treatment and the like. The sensor has the advantages of high sensitivity, good frequency selectivity and strong durability, and is particularly suitable for detecting weak laryngeal vibration signals of laryngeal patients.

The invention discloses a wearable knee joint self-powered sensing system and a use method, relates to the technical field of motion monitoring, and solves the technical problem that a motion detection sensor integrating light weight and a self-powered mode is lacked in the prior art. The motor comprises a stator part and a rotor part which are rotationally arranged, a center shaft penetrating through the stator part is arranged on the rotor part, and the stator part and the rotor part are rotationally connected through the center shaft; and a motion state monitoring module and a self-powered module are sequentially and coaxially arranged at the connecting part of the stator part and the rotor part, so that the rotation angle and direction of the knee joint are accurately detected, and key data support is provided for subsequent motion analysis and health monitoring.

The invention discloses a liquid metal enhanced triboelectric material with a bionic surface and a preparation method of the liquid metal enhanced triboelectric material, and belongs to the technical field of triboelectric materials. The preparation method comprises the following steps: mixing an interface stabilizer TEMPO oxidized nanocellulose with a liquid metal gallium-indium alloy to obtain TOCNF (at) LM liquid metal-based micro-nano liquid drops; and doping the obtained TOCNF-coated LM liquid metal-based micro-nano liquid drops into a base material waterborne polyurethane, and constructing a bionic rose petal micro-mastoid process structure by adopting a template method, so as to obtain the liquid metal enhanced triboelectric material with a bionic surface. The composite material with the rose petal micro-nano structure is prepared through bionic design, the micro-mastoid structure of rose petals is successfully re-carved, and the triboelectric property of the waterborne polyurethane is remarkably improved by utilizing TOCNF at LM liquid metal-based micro-nano liquid drops, so that the open-circuit voltage of the prepared composite material reaches 250V, the short-circuit current reaches 8.19 mu A, and the triboelectric property of the waterborne polyurethane is remarkably improved. The short-circuit transfer charge quantity reaches 95nC, and theoretical and practical guidance is provided for the design of a high-performance triboelectric material.

The floatable instantaneous generator comprises an outer layer in the form of a hemispherical floatable supporting bowl and an inner layer in the form of a liquid-solid triboelectric nano generator (ls TENG); the inner layer includes a fluorinated ethylene propylene (FEP) layer on an inner side of the bowl, a ring electrode on an upper surface of the FEP layer around a periphery thereof, a circular electrode on a bottom surface at a central portion of the FEP layer, and a droplet slidable on the upper surface of the FEP layer. When subjected to open sea waves, the bowl floats and tilts the ls TENG so as to slide droplets on the upper surface of the FEP, thereby creating and disconnecting contact between the ring electrode and the circular electrode and providing power to an electrical circuit connected between the ring electrode and the circular electrode.

An Archimedes ocean energy harvesting device, comprising a floating body (1) and a thin-plate contact-separation TENG (2). The floating body (1) is mounted below a water surface and is capable of moving with wave fluctuations, thereby driving the thin-plate contact-separation TENG (2) loaded inside the floating body (1) to generate electricity. The floating body (1) comprises a silo (11), a buoy (12), and an elastic annular waterproof belt (13) connecting the silo (11) and the buoy (12). The silo (11) is inserted upwards into the buoy (12), and the waterproof belt (13) connects the buoy (12) and the silo (11) to form a closed cylindrical chamber. The thin-plate contact-separation TENG (2) is mounted in the cylindrical chamber, and comprises a fixing mechanism (24), a connecting rod (23), a plurality of circular friction discs (21) and a plurality of electrode discs (22), wherein the friction discs (21) and the electrode discs (22) are alternately arranged in parallel along the axial direction of the cylindrical chamber, and the friction discs (21) and the electrode discs (22) are respectively fixed on the buoy (12) and the silo (11).

The invention discloses a self-excitation cooperative energy management circuit for enhancing TENG output performance, and belongs to the technical field of power electronics. The self-excitation cooperative energy management circuit is connected to the rear end of the TENG and comprises a self-charge excitation circuit, a capacitance converter circuit and a voltage reduction circuit, and the self-charge excitation circuit is connected to the rear end of the TENG, comprises a rectification circuit and is used for charge excitation of the TENG, rectification and output of a first direct current signal; the capacitance converter circuit is connected to the rear end of the self-charge excitation circuit and is used for performing power conversion on the first direct-current signal and outputting a second direct-current signal; the voltage reduction circuit is connected to the rear end of the capacitance converter circuit, comprises a switching circuit and is used for reducing voltage and increasing current of the second direct-current signal and outputting a third direct-current signal. According to the self-excitation collaborative energy management circuit, the charge output capability of the TENG can be greatly improved, and an electronic device can be directly driven.

The application discloses a damping device and a damping method, which combines a friction generator with a damping component, so that the friction generator outputs an electric signal under the action of an external vibration source, and when the electric signal is transmitted to the damping component, the electric signal can adjust the inherent frequency of the damping component itself, so that the adjusted inherent frequency is different from the vibration frequency provided by the external vibration source, so that the damping component and the external vibration source cannot achieve resonance, thereby achieving the purpose of damping; and since the electric signal is provided by the friction generator, an external excitation power supply is not needed, the dependence on the external excitation power supply is reduced, and passive damping is achieved; in addition, the damping device does not need a complex structure, and only needs to combine the friction generator with the damping component to achieve damping, so that the structural complexity of the damping device is effectively simplified, the manufacturing cost of the damping device is reduced, and the manufacturing efficiency of the damping device is improved.

The invention relates to the technical field of power transmission line self-energy-taking, and discloses a power transmission line self-energy-taking device and a state detection system, and the device comprises a housing structure, a motion structure, an electromagnetic power generation structure, and a friction power generation structure. Wherein the moving structure is composed of a permanent magnet, a spring and a fixing groove, the vertical shell and the fixing groove are connected through the spring, and a spring mass vibration system is constructed; the electromagnetic power generation structure generates power through relative movement of a permanent magnet and a coil. The friction power generation structure generates power through sliding separation of sliding electrodes on the side faces of the fixing grooves and electrodes in the side shells. The invention further discloses a state detection system, vibration energy is collected through the device and stored in an energy storage battery through an energy management circuit to supply power to a sensor detection circuit, and data are sent to an upper computer through a wireless transmission module. The power transmission line state real-time detection without external energy supply can be realized, and the problem of power supply of monitoring equipment in remote areas is solved.

The invention relates to a self-energized acceleration sensor system based on a wind-induced vibration pick, and the system comprises a wind-induced vibration energy collection module which is used for collecting wind energy, converting the wind energy into vibration energy, and transmitting the vibration energy to an energy conversion and storage module; the energy conversion and storage module is used for realizing energy conversion and storage through piezoelectric-electromagnetic-triboelectric hybrid conversion and self-adaptive impedance matching based on vibration energy; the multi-parameter sensing module is used for monitoring acceleration, wind speed and tower body deformation based on the electric energy provided by the energy conversion and storage module; and the control management module is used for managing the wind-induced vibration energy acquisition module and the energy conversion and storage module according to monitoring data of the multi-parameter sensing module. The system can make full use of low-medium speed wind power resources in the northeast region, solves the power supply problem of a traditional sensor, improves the monitoring precision and environmental adaptability, and is suitable for long-term monitoring of complex environments such as power transmission towers.

The invention provides a passive water flow monitoring system, which is installed at a liquid outlet, utilizes water flow to push a power generation module to generate power, stores energy and stabilizes voltage through a source processing module, and supplies power to a main controller and a wireless transmitting module, thereby realizing flow state detection and wireless transmission without an external power supply and wiring. The detection end is composed of a power generation module, a power supply processing module, a main controller, a detection module and a wireless transmitting module. The receiving end comprises a wireless receiving module, a main control module and a user interface; by detecting a rotating speed signal driven by water flow and wirelessly transmitting the rotating speed signal, real-time monitoring on whether liquid flows or not can be realized. The system has the advantages of no need of power supply and wiring, simplicity and convenience in installation, high sensitivity, low energy consumption, real-time remote monitoring and the like, can effectively prevent no-load operation of equipment such as a water pump and the like, reduces the maintenance cost, and is suitable for popularization and application in the fields of industrial automation, water treatment, consumer electronics and the like.

The invention discloses a gait sensing unit of a triboelectric nano generator based on liquid metal / PDMS porous sponge, and relates to the field of gait sensors, and the sensing unit with high porosity, flexibility and durability is prepared through a template method. A white granulated sugar template is adopted to construct a three-dimensional communicated porous structure, so that uniform dispersion of LM in a PDMS matrix is realized, and the technical problem that low density and high sensitivity of traditional TENG are difficult to consider at the same time is solved. The preparation method comprises the steps of mixing and stirring, template infiltration, curing molding, template dissolution and the like, flexible sensors with thousand secondary cycle stability can be produced in batches, and the flexible sensor is suitable for wearable health monitoring equipment.

The invention relates to the technical field of fluid pressure sensing, in particular to a triboelectric hemispherical composite film pressure sensing device and a control method thereof, and the device comprises a shell, a top gland and a sensing unit located in the shell. The sensing unit comprises an insulating cover plate, a composite film, an insulating ring cover, a transmission buffer block, an annular end cover and a hemispherical composite film from bottom to top. The composite film directly contacts with hydraulic oil, deforms under pressure and acts with the copper foil on the lower side of the transmission buffer block to generate a first electric signal; when the pressure is increased, the transmission buffer block is pushed to move upwards, so that the spherical copper foil on the upper side acts with the hemispherical composite film to generate a second electric signal. Self power supply is realized by utilizing a friction nanometer power generation principle, wide-range monitoring is realized through a double-layer sensing structure, and the sensor has the advantages of high sensitivity, good sealing performance, adaptability to complex hydraulic working conditions and the like in cooperation with a spherical surface contact design and a multi-sealing structure.

The invention discloses a composite wind energy collector, which relates to the technical field of energy collection, and comprises a driving assembly, and the driving assembly comprises a shell, a rotating shaft, a wind cup, a bearing and a placing disc; the power generation assembly comprises an electromagnetic assembly, a piezoelectric assembly and a friction assembly. The device has the beneficial effects that on the basis of combination of electromagnetic energy collection and piezoelectric energy collection, the friction power generation process is additionally added, on one hand, the energy utilization rate is increased through electromagnetic energy collection and piezoelectric energy collection, energy collected by electromagnetic energy is small in voltage and large in current, energy collected by piezoelectric energy is large in voltage and small in current, and the energy utilization rate is increased; the two kinds of energy complement each other, on the other hand, alternating force is applied to the magnetic poles on the piezoelectric plates through the magnets, frequency conversion on piezoelectric energy collection is achieved, the wind cup does not generate electricity through friction when wind is small and electricity is not needed, the rotating speed of the wind cup is reduced while electricity is generated through friction when wind is large, and sufficient conversion of the energy is ensured.

The embodiment of the invention provides a self-powered microneedle patch for repairing hypertrophic scars as well as a preparation method and application of the self-powered microneedle patch. The self-powered microneedle patch comprises: a friction nano-generator for generating a current; the conductive drug-loaded microneedle patch is connected with the friction nano-generator, and the friction nano-generator is connected with the conductive drug-loaded microneedle patch; the conductive drug-loaded microneedle patch comprises a conductive microneedle patch body and a crosslinked gelatin-crosslinked hyaluronic acid microneedle bearing Sb4. The surface of the conductive micro-needle patch is provided with a metal coating, and the conductive micro-needle patch is used for mediating current generated by the friction nano-generator and applying percutaneous electrical stimulation; the cross-linked gelatin-cross-linked hyaluronic acid microneedle is coated at the tip of the conductive microneedle patch. According to the self-powered microneedle patch provided by the embodiment of the invention, myofibroblasts of hypertrophic scars are transdifferentiated into adipocytes by providing percutaneous electrochemical stimulation, inflammatory factor release is inhibited, and a tissue microenvironment is remodeled, so that the hypertrophic scars are reversed, and skin repair and tissue regeneration are realized.

The invention provides a self-generating wearable motion sensing device convenient for collecting motion information. The self-generating wearable motion sensing device comprises two hinged torsion arms, a rotating shaft of the one-way rotating disc assembly and a hinged shaft of the two torsion arms are coaxially arranged, a plurality of protruding parts are arranged in the circumferential direction of the one-way rotating disc assembly, and a plurality of piezoelectric triggering units are arranged on the rotating disc in the circumferential direction. The piezoelectric module comprises a piezoelectric cantilever, one end of the piezoelectric cantilever is fixed with one torsion arm, and the other end of the piezoelectric cantilever is matched with the piezoelectric trigger unit; the friction electricity module is connected with the other torsion arm and comprises two films, the two films are oppositely arranged, and the protruding part can be matched with the first film, so that the two films are close to or away from each other. According to the invention, the piezoelectric module is matched with the piezoelectric trigger unit, and the triboelectric module is matched with the lug boss, so that the legs are matched with the piezoelectric trigger unit and the triboelectric module respectively in two stages included in one walking period, and motion signals in different stages in the walking period are collected respectively; therefore, the accuracy of signal acquisition is improved.

A triboelectric generator can include respective contact members including a first contact member and second contact member. The respective contact members can be movable with respect to each other such that the respective contact members separate from each other in a first configuration and contact each other in a second configuration. The first contact member can include a first conductive layer and a contact layer. The second contact member can be spaced apart from the first contact member in the first configuration and can include an insulating contact layer and a second conductive layer. The insulating contact layer can be configured to come into contact with the contact layer of the first contact member and the transition of the respective contact members from the first configuration to the second configuration can create triboelectric charges. In some examples, the first contact member can include a non-contact insulating layer.

The invention discloses a flexible self-powered triboelectric sensor, and belongs to the technical field of sensors, the flexible self-powered triboelectric sensor comprises a first silicone rubber layer, a hydrogel layer, a conductive silica gel electrode layer and a second silicone rubber layer which are sequentially arranged from top to bottom, the hydrogel layer is prepared from N-isopropylacrylamide (NIPAM), N, N-dimethylacrylamide (DMAA), N, N-dimethylacrylamide (DMAA), N, N-dimethylacrylamide (DMAA) and N, N-dimethylacrylamide (DMAA); n, N '-methylene bisacrylamide (MBA) and sodium alginate (SA) are copolymerized to form a three-dimensional network, in-situ embedding of biological source orange juice carbon dots is initiated through ultraviolet light, and the first silicone rubber layer, the hydrogel layer, the conductive silica gel electrode layer and the second silicone rubber layer are bonded and fixed on the periphery through silica gel. The invention discloses a green, safe and high-performance flexible triboelectric sensor, which realizes excellent electrical output through a simple process and is combined with an advanced signal processing technology to realize accurate recognition of multiple key physiological signals by a single sensor.

This invention discloses a multifunctional composite flexible fabric with multiple functions including radiative cooling, energy harvesting, hydrophobicity, and antibacterial properties. The composite flexible fabric consists of several electrospun fiber layers, each formed sequentially by electrospinning in a top-to-bottom order. It includes at least two polymer electrospun fiber layers and at least one nanofunctional electrospun fiber layer, wherein the nanofunctional electrospun fiber layer serves as an intermediate sandwich layer, forming a sandwich structure with the polymer electrospun fiber layers located on the upper and lower surfaces. This invention also discloses a method for preparing this flexible fabric, using electrospinning to prepare it by electrospinning a PVDF or related polymer solution and a polymer solution modified with functional nanoparticles. This preparation method can effectively control the morphology of the nanofibers and the functions of the nanoparticles, enabling a synergistic effect between the functional nano-scattering particles and the nanofibers, resulting in an integrated functional fabric with thermal management, energy harvesting, and antibacterial properties.

The invention discloses a piezoelectric-triboelectric hybrid power generation device and method based on flow-induced shaking, the device comprises a flow-induced shaking module, the flow-induced shaking module comprises a base, a rotating rod capable of rotating along the base is arranged on the base, a cantilever beam is arranged on the rotating rod, the inner end of the cantilever beam is arranged on the rotating rod, and the outer end of the cantilever beam is arranged on the base. The cantilever beam is provided with a piezoelectric module, the piezoelectric module comprises a piezoelectric plate, and the piezoelectric plate is connected with a first collection circuit; a solid-liquid friction nanometer power generation module is arranged at the outer end of the cantilever beam, the solid-liquid friction nanometer power generation module comprises a container, friction liquid, a friction layer and an electrode are arranged in the container, and the electrode is connected with a second collection circuit.

The invention relates to the technical field of conductive materials, and discloses ECC concrete based on carbon black doping and a preparation method and application thereof.The preparation method includes the following steps that cement, slag, quartz sand, silica fume and limestone powder are subjected to dry mixing to obtain a dry material; dispersing carbon black and a dispersing agent in water to obtain carbon black dispersion liquid; and mixing the dry material, the carbon black dispersion liquid, a polycarboxylate superplasticizer and polyethylene fibers to obtain the carbon black doped concrete. The conductivity of the ECC concrete is improved through the carbon black, the ECC concrete is applied to the field of friction nano-generators, potential difference can be formed through extrusion of an automobile in the using process, and therefore current is output to supply power to traffic lights, monitoring equipment and the like.

The invention discloses surface-modified self-repairing polyurethane, a friction nano-generator, a preparation method and application, and belongs to the technical field of material scientificity, and the preparation method of the surface-modified self-repairing polyurethane comprises the following steps: uniformly mixing a fluorine-containing group compound and hexamethylene diisocyanate, and carrying out heating reaction, extraction and drying to obtain the surface-modified self-repairing polyurethane. Mixing with serinol, dissolving in an organic solvent, heating for reaction, and drying to obtain a fluorine-containing group chain extender; and dissolving a quadruple hydrogen bond-containing chain extender and a fluorine-containing group chain extender in an organic solvent, adding the isocyanate-terminated polyurethane prepolymer, and carrying out stirring reaction, mold reversing and drying to obtain the surface-modified self-repairing polyurethane. The self-repairing polyurethane can effectively improve the environmental adaptability and the service life of the friction nanometer generator. The surface charge transfer efficiency is enhanced due to good conductivity, and the power generation performance is improved; meanwhile, the mechanical property is enhanced through hydrogen bond crosslinking, so that compared with traditional equipment, the environment universality is better.

The invention discloses a friction nano-generator based on silk fibroin composite aerogel, a preparation method and application of the friction nano-generator. Biomass SF serves as a matrix and is combined with high-conductivity MXene, an interface structure between the MXene and the SF is improved through sodium alginate (SA), and biomass conductive aerogel with high mechanical property and electrical property is constructed and serves as a positive friction material; the friction nano-generator, which is combined with a polydimethylsiloxane / barium titanate (PDMS / BaTiO3) composite film with high dielectric property as a negative friction material, has high frictional electricity output property and stability. According to the invention, three different types of friction nano-generators of a plane type, a folding type and a wave type are developed, and the wave type friction nano-generator has the most excellent high-friction electricity output property and stability.

The invention provides an oscillating swing wing type particle-based friction nano generator and method for collecting wave energy, the oscillating swing wing type particle-based friction nano generator comprises a central shaft body, two side surfaces of the central shaft body are respectively hinged with a swing blade structure capable of swinging along with waves, the other end of each swing blade structure is hinged with a floater swing unit, and a sealing box is mounted in the floater swing unit; and a friction nanometer power generation unit for generating power is arranged in the sealing box. Ocean wave energy can be collected and utilized, the effective friction contact area is large, and the energy conversion efficiency is improved.

The invention discloses an underwater target signal enhancement method based on bistable stochastic resonance and a particle swarm optimization algorithm, and the method comprises the steps: S1, collecting a simulation perception electric signal corresponding to a flow field caused by the disturbance of a propeller of an underwater vehicle through a bionic side line perception sensor based on friction nanometer power generation; s2, preprocessing the simulated sensing electric signal to obtain a preprocessed signal sequence; and S3, constructing a target signal enhancement strategy based on bistable stochastic resonance and a particle swarm optimization algorithm, and performing signal enhancement processing on the preprocessed signal sequence based on the target signal enhancement strategy to obtain a target enhanced signal. According to the invention, the problem that the existing method cannot effectively realize underwater target signal enhancement is solved.

The invention discloses an omni-directional ocean current energy capturing device based on a friction nanometer generator. The omni-directional ocean current energy capturing device comprises a device shell, a base, an elastic supporting rod and a plurality of friction nanometer power generation units. A closed cavity is formed in the device shell; the two ends of the elastic supporting rod are fixedly connected with the base and the device shell. The multiple friction nanometer power generation units are evenly distributed on the inner wall of the closed cavity of the device shell in the circumferential direction. When the energy capturing device is placed in water, the device shell is suspended in the water under the traction of the base and the elastic supporting rod, and the device shell swings in a reciprocating mode under the traction of the elastic supporting rod under the driving of water flow, so that the friction layer and the first electrode layer make contact with each other in a reciprocating mode and are separated from each other. The omni-directional ocean current energy capturing device based on the friction nano-generator disclosed by the invention has the advantages of omni-directivity, simple and reliable structure and high energy conversion efficiency, and is particularly suitable for capturing and converting low-frequency and multi-directional ocean current energy in an ocean environment.

The invention discloses a flame-retardant friction electronegative material and a preparation method and application thereof.The preparation method comprises the steps that liquid metal and nano-clay are evenly mixed to obtain composite nano-particles, and the mass part ratio of the liquid metal to the nano-clay is (1-4): 1; the composite nano particles are evenly dispersed into the organic silica gel precursor solution, a liquid metal / nano clay / organic silica gel mixed solution is obtained, and the mass fraction of the composite nano particles in the liquid metal / nano clay / organic silica gel mixed solution is 1-20%; and uniformly coating a substrate with the liquid metal / nano clay / organic silica gel mixed solution, and curing at 60-80 DEG C for 5-10 hours to obtain the flame-retardant friction electronegative material on the substrate. The flame-retardant friction electronegativity material has good flame retardance and thermal stability, and the flame retardance of the organic silica gel is greatly improved through the synergistic effect of the liquid metal and the nano clay.

The utility model discloses a fan blade type friction nanometer generator based on seabed ocean current energy, which comprises a shell, fan blades and a friction generator, a power generation cavity and a blade cavity are respectively arranged at two ends in the shell, the power generation cavity and the blade cavity are two mutually independent cavities, the fan blades are rotatably arranged in the blade cavity, the friction generator is arranged in the power generation cavity, and the friction generator is arranged in the friction generator. The fan blades and the friction generator are coaxially arranged and are in transmission connection through the magnetic coupling part; a water flow channel is formed in the shell, a flow guide cover is arranged in front of the fan blades, and water flow enters the water flow channel through the flow guide cover and pushes the fan blades to rotate. By arranging the power generation cavity and the blade cavity which are isolated from each other, the power generation component and the driving component are installed separately, transmission is conducted through the magnetic coupling component, a dynamic sealing structural part does not need to be installed, and the power generation component can be independently installed in the power generation cavity in a sealed mode; and meanwhile, as no dynamic sealing structural member is arranged, the transmission resistance is greatly reduced, and the mechanical loss is reduced.

A wireless sensor system for a vehicle includes a controller, a wireless transmitter in electronic communication with the controller, a sensor, and a generator device. The generator device includes a wireless receiver in wireless communication with the wireless transmitter. The generator device further includes an electric-to-mechanical transducer in electronic communication with the wireless receiver and a piezoelectric or triboelectric generator proximate to or in contact with the electric-to-mechanical transducer. The generator device further includes an energy-storage device. The energy storage device includes an input in electronic communication with the piezoelectric or triboelectric generator, and an output in electronic communication with the sensor.

The invention provides a self-power-generation type offshore buoy based on vortex-induced vibration and a power generation method, and belongs to the technical field of buoy power generation. The buoy comprises a buoy body, a rotating pipe and a buffering mechanism, a tail pipe is arranged on the lower side face of the buoy body, a balancing weight is arranged at the lower end of the tail pipe and connected with a fixing anchor through a steel cable, the rotating pipe is rotationally arranged on the tail pipe, two rotating plates are hinged to the rotating pipe, and the rotating plates are connected with the buffering mechanism. The two rotating plates are arranged in parallel, vibrators are arranged on the opposite sides of the two rotating plates in a sliding mode, the vibrators are connected with nanometer friction power generation assemblies, the nanometer friction power generation assemblies can generate power through horizontal sliding of the vibrators, and the buffering mechanism is arranged between the two rotating plates and plays a role in buffering rotation of the two rotating plates. Vortex-induced vibration can be generated through ocean currents around the tail pipe to generate power, the cruising ability of the buoy is improved, and meanwhile impact of the ocean currents on the tail pipe is reduced.

The self-driven sensor and bearing slip rate in-situ monitoring method disclosed by the specification relates to the technical field of bearing detection and comprises a ferroelectric PVDF film, an upper flexible electrode, a lower flexible electrode and a spacer. The ferroelectric PVDF film is bonded to the Cu electrode area on the upper surface of the lower flexible electrode. The spacer is arranged on the two sides of the ferroelectric PVDF film in the horizontal direction. The upper flexible electrode is bonded to the spacer. When subjected to external pressure, the upper flexible electrode is deformed to contact the ferroelectric PVDF film. The self-driven sensor and bearing slip rate in-situ monitoring method provided by the present application meets the requirements of non-interference, easy integration, self-power supply and high-precision monitoring for bearing slip rate monitoring, and realizes precise wireless in-situ monitoring of bearing slip rate.