100 results about "Electromagnetic field" patented technology

Methods, apparatus, devices, subsystems, and systems for holographically displaying three-dimensional objects are provided. In one aspect, a system includes: a display having a plurality of display elements and a driving device coupled to the driving device and configured to: obtain a hologram for the display, wherein the hologram comprises, for each display element of the plurality of display elements, a respective sum of electromagnetic (EM) field contributions of a plurality of primitives corresponding to at least one object to the display element; and generate, for each display element of the plurality of display elements, a respective modulation control signal based on the respective sum of EM field contributions of the plurality of primitives to the display element.

The invention provides an unmanned aerial vehicle array type aviation multi-component electric field and magnetic field cooperative detection system and detection method. The detection system comprises an unmanned aerial vehicle array, a transmitting unit, a plurality of receiving units and a ground auxiliary unit. The unmanned aerial vehicle array comprises a master unmanned aerial vehicle and a plurality of slave unmanned aerial vehicles; the transmitting unit is used for transmitting primary electromagnetic field pulses; the transmitting unit comprises a loop source transmitting device, and the loop source transmitting device comprises a current transmitter, a transmitting coil and a compensating coil; the plurality of receiving units are respectively mounted under the master unmanned aerial vehicle and the slave unmanned aerial vehicle and are used for acquiring electromagnetic data after the primary electromagnetic field pulse acts on the to-be-detected area, and the electromagnetic data comprise a horizontal component electric field signal and a three-component magnetic field signal; each receiving unit comprises a capacitive electric field sensor, a three-component coil magnetic field sensor and an electromagnetic data receiver; and the ground auxiliary unit is used for controlling acquisition of the horizontal component electric field signal and the three-component magnetic field signal, and performing electromagnetic data processing to obtain underground space electrical information of the detection area.

A right-hand circularly-polarized patch antenna comprising a ground plane and a patch connected to each other with one or more wires for which the wire shape and location of the end points are selected such that they do not cause an antenna mismatch, and the electrical current carried in the wires produces an extra electromagnetic field subtracted from the patch field in the nadir direction.

The invention discloses an intelligent power grid optimization scheduling method based on digital twinning, and relates to the technical field of power grid optimization scheduling, and the method comprises the steps: building a dynamic power grid mirror image model according to a standardized power grid data matrix, and generating an evolution trajectory prediction report through a quantum magnetic coupling mechanism; establishing a variable association network based on the evolution trajectory prediction report, and generating an optimization scheduling instruction set in combination with the standardized data matrix; executing an optimization scheduling instruction set to obtain magnetic potential gradient distribution, and generating a topology reconstruction scheme by identifying a magnetic potential change trend; and inputting the topology reconstruction scheme into the dynamic power grid mirror image model to generate an electromagnetic field evolution trajectory, and generating a safety scheduling report in combination with magnetic potential energy gradient distribution. According to the method, the power grid magnetic field data is coded into an evolution trajectory prediction report through a quantum-magnetic coupling mechanism, and high-precision risk pre-judgment is realized; a topology reconstruction scheme is dynamically generated according to the electromagnetic energy gathering trend, and the power grid optimization scheduling efficiency is improved.

The present invention relates to a batch appearance inspection device for bearing steel balls applied in the technical field of inspection equipment. The position and angle of a coil group are adaptively adjusted by adjusting a motor and an adjusting rod so that the coil group can form an optimal match with the surfaces of bearing steel balls of different sizes. The left and right coil groups can generate a magnetic field so that the bearing steel balls can be suspended and rotated around an axis, thereby realizing non-contact all-round inspection. The device also integrates multi-frequency eddy current inspection and micro-nano probe scanning technology so that surface defects at the nanometer level can be precisely detected. A controller has a built-in machine learning algorithm so that the inspection data can be intelligently analyzed, defect types can be automatically identified, and three-dimensional defect images can be generated. The bearing steel balls are fed in through a feeding pipe, and after the surface is cleaned by the electromagnetic field generated by an oscillating coil, the bearing steel balls fall between the left and right coil groups. The coil group is adaptively adjusted so that the bearing steel balls can be suspended and rotated, and eddy current inspection is performed on them. If a suspected defect is found, the detection coil group will further scan and confirm it.

Modular coil assemblies for wireless charging of vehicles have coil geometries and communications designed to limit electromagnetic field (EMF) levels in regions where humans or other living objects may be present. The modular coil assemblies are designed with the ability to shape the magnetic field to be predominately within shielding provided by the auto chassis by, for example, providing side-by-side phase cancellation or diagonal versus front-to-back (for 1×3, 2×3 array configurations) phase cancellation. The power levels and frequency offset pairwise compensation of the respective coils may be controlled to improve cancellation and thus to reduce magnetic field exposure potential. The phase cancellation of the magnetic flux density from respective coil assemblies varies over a range to provide, for example, ˜50% cancellation at 125° offset and up to ˜100% cancellation at 180°. Charging profiles for vehicles and charging stations may be used to maximize the magnetic flux density cancellation during charging.

The invention provides a preparation method of a TiO2 / Au-C3N4 heterojunction photoelectrochemical biosensor and an application of the TiO2 / Au-C3N4 heterojunction photoelectrochemical biosensor. Comprising the following steps: step 1, preparing TiO2 / FTO; step 2, preparation of TiO2 / Au-C3N4 (titanium dioxide / Au-C3N4); step 3, preparing a nucleic acid aptamer; and step 4, using the confining liquid mercaptohexanol. The preparation method comprises the following steps: firstly, preparing a TiO2 thin film by an electrophoretic deposition method, and then combining the TiO2 thin film with graphite phase carbon nitride (g-C3N4) doped with high-conductivity noble metal gold nanoparticles (Au NPs) to form a heterojunction; under an illumination condition, Au NPs and photons interact to generate a regional surface plasma resonance phenomenon, and a strong electromagnetic field and high-concentration high-energy carriers are formed on the surface of the nano structure in the process, so that the photocurrent response of the composite material is remarkably enhanced; besides, the introduced Au NPs can also form an Au-S bond with the DNA aptamer containing the-SH group, and more binding sites are provided, so that the capture capability of the aptamer is enhanced.

The invention relates to the technical field of chromatographic detection and material characteristic analysis, and discloses a multiphase chromatographic analysis system and method.The multiphase chromatographic analysis system comprises a multiphase sample injection module, a multi-field cooperative regulation and control separation column module and a plurality of separation chromatographic columns which are sequentially connected, and the separation chromatographic columns comprise partitions and are installed in a column box in an end-to-end connection mode; a temperature gradient field, an electric field gradient field, a controllable electromagnetic field and a fluid power field; and a multi-modal detection module, a data acquisition and control module and an auxiliary module. Through the brand-new multi-phase sample injection module, the multi-field coordinated regulation and control separation column module and the multi-mode detection module, direct input of detected objects in different phase states can be met, and phase state conversion is carried out according to needs, so that the phase state compatibility of the analysis system to the detected objects is obviously enhanced; and different components can be obviously separated according to different boiling points, migration speeds and magnetic susceptibilities by combining multi-field synergistic separation, so that the chromatogram is more accurate.

The method is based on a core idea of unifying a field theory and an interference field theory, is devoted to exploration and expansion of an artificial field frontier technology, and covers an artificial field plus quality technology, an artificial field interference technology and an artificial field control space-time technology. In the research process, mutual verification of experiments and theories is paid attention to. Theoretically, internal correlation among Planck mass, electron mass, gravitational force, electric field force, magnetic field force and fine structure constants is deeply analyzed, a conclusion that the gravitational force, the electric field force and the magnetic field force are equal when a substance reaches a light velocity is obtained, and a unique quantum effect is presented. In the aspect of experiments, a simple verification method is adopted, and substances are placed in a positive electrode area and a negative electrode area respectively. Along with the enhancement of the electric field intensity and the action time, the substance mass in the positive electrode area is gradually reduced, and the substance mass in the negative electrode area is correspondingly increased. The phenomenon can be explained as that the space where the positive charges are located has divergence characteristics and the space where the negative charges are located has convergence characteristics, so that the masses of the substances in the positive and negative electrode areas are changed alternately.

The invention discloses a clamping jaw control method and system of an integrated visual system, and relates to the technical field of automation and robots, and the method comprises the steps: collecting polarized light data of a target object, and generating a polarized light vector set containing polarization state information; the polarized light data comprises Stokes parameters, polarization state classification data and phase difference data; based on the polarized light vector set, polarization characteristics are extracted through polarization response analysis, and material hardness information of the target object is analyzed in combination with a mapping model of material hardness; based on the material hardness information, the rigidity parameter of the magnetorheological clamping jaw is calculated, and an electromagnetic field voltage control instruction is generated; and according to the electromagnetic field voltage control instruction, the movement track of the magnetorheological clamping jaw is planned, and the magnetorheological clamping jaw is controlled to execute the grabbing action. According to the method, the rigidity parameter of the magnetorheological clamping jaw is calculated through the material hardness information, the electromagnetic field voltage control instruction is generated, it is ensured that the grabbing force is matched with the target object attribute, and failures caused by rigidity mismatching are prevented.

The invention belongs to the technical field of transformer substation engineering monitoring, and relates to a transformer substation engineering monitoring method based on intelligent perception, which dynamically generates a hoisting track envelope space containing a specified crane boom body and a hoisting object based on historical action inertia characteristics, current operation target constraints and real-time position feedback. Associating hoisting track envelope spaces of other cranes on a substation site, calibrating an envelope space intersection domain as a tangible collision risk domain, synchronously monitoring electromagnetic field intensity space distribution of an electric field source of the substation, and dynamically calculating a safety spacing margin threshold value between the tail end of a specified crane suspension arm and the nearest electric field source based on a field intensity gradient change rate and suspension arm pose parameters; and the nearest electric field source space coverage domain smaller than the margin threshold value is calibrated as an invisible collision risk domain, and when the specified crane enters the tangible collision risk domain or the invisible collision risk domain, a graded early warning signal is triggered, so that the application degree and precision of hoisting collision monitoring of the crane of the transformer substation are remarkably improved.

An alternating-current electromagnetic field stress measurement system, comprising: an excitation signal generation module, an alternating-current electromagnetic field stress measurement stress probe, a signal amplification circuit, an A / D conversion circuit and a processor, wherein the excitation signal generation module is used for loading a sinusoidal alternating-current signal to an excitation coil of the alternating-current electromagnetic field stress measurement stress probe, such that a periodically changing electric field is generated on a measured magnetic object; the alternating-current electromagnetic field stress measurement stress probe is used for sequentially routing a stress characterization signal, which is detected from the measured magnetic object, through the signal amplification circuit and the A / D conversion circuit, and then sending the stress characterization signal to the processor; and the processor is used for processing the received stress characterization signal by using an optimized J-A model in which an implicit equation originally characterizing a change in the magnetization intensity or magnetic induction intensity along with stress is made explicit, so as to calculate the stress of the measured magnetic object. The alternating-current electromagnetic field stress measurement system can monitor the stress increase trend in real time, and notice potential dangers in time. Further comprised is an alternating-current electromagnetic field stress measurement method and a computer program for executing the alternating-current electromagnetic field stress measurement method.

Provided are a method and device for driving movement of a target object by a gravitational field generated by a varying electromagnetic field which relate to the technical field of physics. The method includes: generating, by a variable electromagnetic field generator, a time-varying electromagnetic field in space where a target is located; adjusting a frequency, amplitude and phase of the time-varying electromagnetic field so as to generate an effect of a varying magnetic field in the space; and based on the time-varying electromagnetic field, generating an acting force on the target object to drive the target object to move along a predetermined trajectory or direction. The present invention breaks through limitation that the traditional electromagnetic mechanics can only drive metal materials, utilizes the varying characteristics of the electromagnetic field to drive and realize accurate control of movement of all objects comprising a non-magnetic substance and a non-conductive substance.

The invention discloses an underwater vehicle wireless electric energy transmission system with an omnidirectional anti-offset function. The transmission system comprises a magnetic coupler receiving assembly and a magnetic coupler sending assembly. The sending assembly is used for providing a charging magnetic field for the receiving assembly. The magnetic coupler transmitting assembly comprises a stepped coil and an anti-series coil, and the stepped coil is located in the anti-series coil; the magnetic coupler receiving assembly comprises a plurality of receiving coils, magnetic cores are arranged in the receiving coils, and the receiving coils are of solenoid structures and are wound around the magnetic cores; the number of the receiving coils is five, one receiving coil is arranged in the middle of the H shape, and the other four receiving coils are fixed to the ends of the H shape. According to the invention, the magnetic field intensity of the surrounding area of the wireless electric energy transmission system is improved, and the mutual inductance between the transmitting coil and the receiving coil is ensured to be stable when the omnidirectional position offset of the aircraft occurs.

The invention belongs to the technical field of physics, and particularly relates to a method for changing an electromagnetic field to generate a vortex gravitational field to enable all substances to move, which comprises the following steps of: enabling a target substance to be positioned in a gap of a soft magnetic iron core, electrifying a coil and driving the target substance through the vortex gravitational field; the coil is wound on the soft magnetic iron core, a section of air gap is reserved in the soft magnetic iron core, a vortex gravitational field is generated at the air gap after the coil is powered on, various substances at the air gap are driven to move under the action of the vortex gravitational field, and the device is not only suitable for fluid conveying, but also used for achieving rotation of metal or non-metal objects, wide in application range and high in practicability. And the design and manufacturing processes of corresponding equipment are simplified.

The invention provides a deep and far sea wind power plant area lightning dynamic parameter inversion method and device, and relates to the technical field of lightning protection, and the method comprises the steps: building a fan return stroke model based on current reflection caused by the wave impedance discontinuity of a fan top, a return stroke channel and a fan bottom grounding position, obtaining an initial propagation model of the electromagnetic field along the sea-land mixed path by combining the surface equivalent impedance of the sea surface and the land of the observation point zone; correcting the initial propagation model through electromagnetic field influence parameters to obtain a target propagation model; inputting a radiation source signal received by an array into the target propagation model for waveform time sequence inversion processing to obtain a corresponding time reversal signal; the time reversal signals in different directions are superposed and focused to obtain the peak azimuth, and the three-dimensional positioning of the lightning radiation source is carried out in combination with the positioning result of the double stations, so that the lightning development spatial-temporal distribution law is determined, and the measurement precision of the lightning leader development speed is remarkably improved.

The invention discloses a device and method for inducing sleep through a low-frequency changing magnetic field. The device comprises an electromagnetic unit, a sensing unit, an intelligent monitoring unit and a monitoring data platform, the method comprises the following steps: S1, acquiring state information of a human body through a sensing unit and transmitting the state information to an intelligent monitoring unit; s2, the intelligent monitoring system analyzes the acquired human body state information and controls an electromagnetic unit to be powered on, so that the electromagnetic unit generates an electromagnetic field and induces the brain of the human body to enter a sleep state; s3, the sensing unit continues to obtain the state information of the human body in real time and feeds back the state information, and the intelligent control unit optimizes and adjusts the magnetic field intensity and the magnetic field frequency generated by the electromagnetic unit; s4, the intelligent control unit uploads the human body state data and the magnetic field control data to a monitoring data platform, and the monitoring data platform generates a personal AI model and performs health state evaluation; and S5, the monitoring data platform feeds back a health state evaluation result to the intelligent control unit.

The present application discloses a fault identification and early warning method and system for a power transmission line, the method comprising: receiving a fault flashover signal, determining the occurrence area of the fault flashover signal, and obtaining a target image; determining whether there is abnormal discharge in the transmission line in the occurrence area; if so, performing image recognition to obtain a fault source to be tested; obtaining the inclination of the tower in the occurrence area and the electromagnetic field and radar changes; determining the movement path of the current fault source, determining the fault source category through image capture, and determining the target fault source; obtaining meteorological data through micro-meteorological sensors and network meteorological weather, and obtaining the future and real-time dancing amplitude and dancing frequency of the transmission line; combining the dancing amplitude, dancing frequency, tree obstacles, super-high engineering vehicles, floating objects, and lightning strikes, which are greater than the warning value, starting image capture to determine the target probability and image of the target fault source causing a secondary fault on the transmission line, determining the high-risk interval segment, and sending the warning picture and video to the background in real time.

The invention provides a crystal pulling process control method, a single crystal silicon rod process control device and a crystal pulling system.The method comprises the steps that a multi-physical-field coupling numerical model of a silicon melt in a single crystal furnace is constructed and used for reflecting the coupling relation among a pulsating velocity field, a temperature field and an electromagnetic field in the silicon melt; according to a preset simulation method and the multi-physics field coupling numerical model, a plurality of characteristic parameters corresponding to the silicon melt under a plurality of process conditions and a plurality of magnetic field structure parameters are generated, and the characteristic parameters are used for representing melt flow characteristics; and determining a target process condition and a target magnetic field structure parameter according to the plurality of characteristic parameters, the plurality of process conditions and the plurality of magnetic field structure parameters, and controlling the single crystal furnace to perform a crystal pulling process under the target process condition and the target magnetic field structure parameter. According to the method, the problem that the crystal quality cannot be guaranteed due to a czochralski method silicon single crystal rod growth process in the prior art is solved.

The invention discloses a Helmholtz coil material lightning magnetic field shielding performance measuring device, which comprises a magnetic field generation device, a shielding test box is arranged in a magnetic field coverage range of the magnetic field generation device, an open hole is formed in the shielding test box, and the open hole enables a magnetic line of force of the magnetic field generation device to transversely penetrate through the shielding test box. The shielding test box is internally provided with the signal measurement unit, the signal measurement unit measures the magnetic field in the shielding test box, the lightning stroke magnetic field environment is accurately simulated, and the repeatability and accuracy of the shielding performance test are improved. The invention further discloses a method for measuring the lightning magnetic field shielding performance of the Helmholtz coil material, the lightning magnetic field shielding performance of the measured shielding material is measured by applying the device for measuring the lightning magnetic field shielding performance of the Helmholtz coil material, and the problem that traditional measurement is poor in accuracy is effectively solved.

The utility model relates to copper wire production technical field, concretely relates to a kind of copper wire production and processing's stretching device, including lubricating bucket and the conveying part for being immersed into the copper wire in lubricating bucket;Electromagnetic rod is located in lubricating bucket, it includes the sealing sleeve coaxially fixed in lubricating bucket and the electromagnetic coil coaxially located in sealing sleeve, for generating strong magnetic field and drive copper powder to the arc-shaped inner wall of lubricating bucket, fishing part is located in lubricating bucket, it includes the fishing ring coaxially slidingly located in lubricating bucket, the outer edge of the fishing ring contacts the inner wall of lubricating bucket.The utility model generates strong electromagnetic field by electromagnetic rod, since copper powder belongs to inverse magnetic material, it generates induced eddy current in alternating magnetic field, and then generates reverse magnetic field, forms repulsion with magnetic field source Lorentz magnetic force and is pushed to low magnetic field area by magnetic repulsion, copper powder can be pushed to the arc-shaped inner wall of lubricating bucket and gathered in real time, greatly extend the period of lubricating liquid cleaning or replacement, reduce its cleaning or replacement frequency.

A method and system for evaluating a cement bond. The method may include disposing a logging tool in a wellbore. The logging tool may include an electromagnetic (EM) sub and an acoustic sub. The method may further comprise transmitting an EM field from the EM sub into one or more tubulars to energize the one or more tubulars with the EM field and measuring a secondary EM field in the one or more tubulars with a EM receive. The method may further comprise transmitting a shaped acoustic signal from the acoustic sub into one or more tubulars and formation, measuring a result signal with the acoustic sub to form one or more acoustic measurements, estimating one or more pipe parameters from the eddy current, and evaluating a cement bond based at least in part on the one or more pipe parameters and the one or more acoustic measurements.

The present invention discloses a mathematical model of a dual three-phase permanent magnet synchronous motor considering the electromagnetic-temperature coupling effect. Based on the finite element calculation results of the electromagnetic field and combined with mathematical methods such as multi-dimensional interpolation and inversion, a high-precision mathematical model of the electromagnetic module of the dual three-phase permanent magnet synchronous motor is established, which can fully consider the magnetic saturation, harmonic magnetic field and rotor position influence in the actual operation of the motor. On this basis, based on the finite element calculation results of the temperature field and using the linear system identification method, a fast and high-precision calculation matrix from various losses to the temperature rise of multiple motor components is established to realize the fast and high-precision calculation of the motor temperature rise, achieving the coupling from electromagnetic to temperature; further, the influence of temperature on the electromagnetic characteristics of the motor is analyzed and calculated, and it is fed back to the electromagnetic module of the motor to realize the coupling from temperature to electromagnetic. The model of the present invention has better fidelity and can provide a more accurate controlled object for high-quality motor control strategies.

This invention belongs to the field of nondestructive testing technology, and particularly relates to a visual detection method for ferromagnetic material defects based on AC / DC composite excitation. This method overcomes the problem of existing AC electromagnetic field detection methods failing to obtain complete visualization of complex defect morphologies in ferromagnetic materials due to mutual interference between current disturbances and leakage magnetic field disturbances, thus providing more detailed and reliable data support for structural safety assessments of offshore oil platforms and offshore wind power platforms. The visual detection method for ferromagnetic material defects based on AC / DC composite excitation includes the following steps: scanning to obtain a magnetic field signal SBz; extracting the DC component SBz from the magnetic field signal SBz. z and communication component SBz j And form a surface matrix; calculate matrix Bz z Matrix Bz j The difference is used to obtain matrix Bz. By performing operations such as curl calculation, gradient calculation, grayscale conversion and binarization on the array of matrix Bz and the image, the defect contour, disturbance current density and disturbance current line image are obtained.

The invention discloses a high-selectivity broadband optical transparent energy selective surface and a control method. The high-selectivity broadband optical transparent energy selective surface comprises a single-layer optical transparent substrate and a parallel circuit structure, the LC series resonance branch is used for forming a fixed stop band in a conventional working state and can form a double-stop-band coupling structure with the field nonlinear device series branch after impedance change under strong electromagnetic attack so as to expand the protection bandwidth, and stable and efficient shielding in the whole target protection frequency band is achieved; and the field-induced nonlinear device series branch is used for performing main shielding and passband adaptive adjustment under strong electromagnetic attack through state switching of the field-induced nonlinear device, that is, the field-induced nonlinear device series branch can change the impedance characteristic under strong electromagnetic field excitation. The LC series branch and the field nonlinear device series branch are integrated on the single-layer light transparent base material, broadband protection performance and low insertion loss which are equivalent to those of a multi-layer or cascade structure are obtained, and meanwhile an extremely small section and a compact structure are achieved.

The invention discloses a nuclear magnetic resonance passive shimming module design method and device based on Gaussian splashing, and relates to the technical field of precision electromagnetic field optimizing.The nuclear magnetic resonance passive shimming module design method comprises the steps that initialization is conducted in a design domain of a passive shimming module, and an initial parameter set of all Gaussian splashing particles is obtained; constructing a mapping relation between the equivalent magnetic moment and the magnetization weight factor of each Gaussian splashing particle and between the intrinsic magnetization intensity and the scaling vector of the magnetic material, and constructing a magnetic field intensity calculation model; inputting the initial parameter set of all Gaussian splashing particles and the real magnetic field intensity into a Gaussian splashing particle parameter set iterative optimization algorithm, and calculating and predicting the magnetic field intensity through a magnetic field intensity calculation model; and based on the predicted magnetic field intensity, the real magnetic field intensity, the magnetization weight factor vector and the center position vector, constructing a multi-objective loss function and performing iterative optimization to obtain an optimized parameter set and manufacture a passive shimming module. The method solves the problem of low precision and efficiency of compensating a magnetic field with a complex shape.

The application belongs to the technical field of radio frequency electromagnetic field measurement, and particularly discloses a quantum field intensity measurement method and system of offset electric field regulation, which comprises the following steps: selecting a Rydberg atomic energy level close to resonance according to the microwave frequency of a measured signal; determining a coupling light wavelength according to the Rydberg atomic energy level, preparing a Rydberg atom, simultaneously obtaining a difference value between the microwave frequency of the measured signal and a resonance transition frequency, and obtaining an energy level offset value according to the difference value; obtaining a polarizability of the Rydberg atomic energy level, obtaining an offset electric field value to be applied according to the energy level offset value and the polarizability; and starting the offset electric field according to the offset electric field value, so that the relevant energy level of the Rydberg atom produces a movement in the offset electric field; when the energy difference between the offset Rydberg energy level and the adjacent energy level resonates with the microwave frequency of the measured signal, the offset sub-energy level forms an energy level splitting, and a frequency splitting is generated, and the electric field of the measured signal is measured according to the interval between the frequency splittings.

The invention discloses an efficient negative oxygen ion film and a preparation process thereof, and relates to the technical field of functional new materials, the efficient negative oxygen ion film sequentially comprises an electron resonance layer and a nano tourmaline layer from bottom to top, the electron resonance layer comprises a latticed carbon fiber net, and a plurality of thin-film solar cells are arranged on the carbon fiber net; and electrodes of the plurality of thin-film solar cells are respectively connected with the carbon fiber net. A thin film solar cell is creatively adopted to generate a weak electromagnetic field and a thermoelectric field effect technology principle; the tourmaline generates a polarization effect and conductivity under the action of a magnetic field, generates a thermoelectric effect under the action of temperature change, and generates a piezoelectric effect under the action of mechanical pressure, so that charges can be further excited, the ion moving speed in the tourmaline is improved, the release of the negative oxygen ions is improved, and the negative oxygen ions exist in a wider range.

The invention discloses an underwater millihertz earthquake sound source transducer and a low-frequency sound wave generation method, the transducer comprises a shell assembly, a high-frequency acoustic transducer, an acoustic medium, a magnetic field generation assembly, an electric field generation assembly and acoustic rubber, and the shell assembly is internally provided with a cavity; the high-frequency acoustic transducer is arranged at the first end of the cavity, the acoustic rubber is arranged at the second end of the cavity, and the acoustic medium is arranged between the high-frequency acoustic transducer and the acoustic rubber; the magnetic field generation assembly is arranged on the shell assembly and used for generating a magnetic field covering the acoustic medium; the electric field generating assembly is arranged on the shell assembly and used for generating an alternating current electric field covering the acoustic medium; the acoustic medium is oscillation fluid. Fluid is driven through an electric field and a magnetic field, sound waves are in nonlinear coupling with the fluid, millihertz sound waves are generated while the small size is kept, modulation sound waves can be generated, and the application requirements of prospecting, ultra-long-distance detection and the like are effectively met.