3059 results about "Magnetic sensing" patented technology

An apparatus for use in a magnetic induction wireless power transfer system comprises at least one booster coil positioned adjacent an active coil of a magnetic induction wireless power transfer system and a capacitor electrically connected to the booster coil. A capacitance of the capacitor is selected such that a current in the booster coil is approximately equal to a current in the active coil during wireless power transfer. The apparatus may comprise at least one shielding coil positioned adjacent an active coil of a magnetic induction wireless power transfer system, a capacitor electrically connected to the shielding coil, and a conductor positioned adjacent the shielding coil opposite the active coil. The conductor encompasses the shielding coil.

The invention discloses a magnetic wave ring which comprises a base, supporting legs are arranged at the bottom of the base, a machine body is installed on the base, a displayer support is installed on the top of the machine body, a displayer is installed on the displayer support, an operation interface is integrated in the displayer, a handle connector is arranged at the end, close to the displayer support, of the machine body, and a magnetic therapy handle is installed in the handle connector. A handle support is arranged on one side of the machine body, a plurality of radiators are arranged on the back of the machine body, power sockets are arranged at the bottoms of the radiators, and power switches are arranged on one sides of Compared with the prior art, the device has the advantages that painless and noninvasive electromagnetic stimulation treatment is achieved through the magnetic induction principle, the curative effect is definite, the side effect is small, and addiction is not prone to occurring. The equipment is reasonable in design, simple and convenient to operate, easy to master and suitable for medical institutions and families. Personalized treatment parameter setting is provided, and the requirements of different patients and different treatment parts are met. The device has multiple safety protection functions, and safety and effectiveness of the treatment process are ensured.

The invention relates to the technical field of ocean salvage ship anchors, and discloses an ocean salvage ship anchor method which comprises the following steps: delimiting a ship anchor preliminary search range according to historical records and environmental data of a ship anchor falling area; acquiring the accurate position of the ship anchor by using a multi-mode composite positioning technology, wherein the multi-mode composite positioning technology comprises a positioning process based on sonar detection, magnetic sensing and underwater image recognition; through a multi-ship collaborative optimization scheduling system, a salvage task is allocated according to ship functions and real-time positions, a salvage ship and a salvage tool are controlled according to an optimized path, and ship anchor salvage operation is executed; and adjusting the salvage path and the operation parameters based on the real-time environment data until salvage is completed. A multi-mode composite positioning technology is adopted, and through combined application of sonar detection, magnetic sensing and underwater image recognition, the technical effect of quickly and accurately positioning the ship anchor in a complex underwater environment is achieved.

The invention discloses a high-integration-level matrix type magnetic sensing chip structure and circuit and a manufacturing method thereof, and belongs to the technical field of semiconductor devices, the chip structure comprises a plurality of matrix elements, a switch matrix and a rear-end interface circuit, and each matrix element comprises a cross-shaped horizontal Hall element and a switch device; the switch matrix is composed of switch devices in matrix elements; the cross-shaped horizontal Hall element matrix is an N * M Hall matrix element formed by an integrated 1 * M Hall element matrix in each row; according to the invention, the structure and the circuit of the matrix type magnetic sensing chip which can be used for statically and dynamically measuring multi-dimensional magnetic field distribution in real time in severe environments such as high temperature, high pressure and high radiation are innovated and manufactured; dynamic and static measurement in a multi-dimensional magnetic field space can be achieved, error compensation is carried out through a circuit, it is ensured that the chip can stably work in the high-temperature, high-pressure and high-radiation environment, and it can be ensured that the chip has high linearity, sensitivity and accuracy.

The invention discloses a nondestructive testing method for internal defects of a concrete structure fusing big data feature extraction and deep learning. According to the method, through multi-source data collaboration and dynamic feature fusion, the accuracy and robustness of concrete structure defect detection are remarkably improved. In a data processing link, ultrasonic electromagnetic induction infrared thermal imaging data and the like acquired by a multi-source nondestructive testing technology are subjected to collaborative preprocessing, so that the influence of noise interference and environmental fluctuation is eliminated, and standardized input is provided for feature extraction. The dynamic weight distribution network further combines the relevance of each modal feature in a historical defect sample, adjusts fusion weights of different modals in real time, reinforces ultrasonic features with great contribution to cavity recognition or infrared features sensitive to cracks, effectively compresses redundant information, and improves the accuracy of cavity recognition. According to the method, features and data-driven deep features of the fused feature vectors are manually designed at the same time, so that the limitation of single-modal data is avoided, and a model can more accurately capture multi-dimensional features of defects.

The present invention discloses an integrated circuit chip with a data line, a key and a mechanical keyboard, wherein the integrated circuit chip integrates a magnetic induction integrated circuit and an RGB magic color driving circuit; the integrated circuit chip includes a power pin, a ground pin, a data information input pin and a data information output pin, and the connection between the data information input pin and the data information output pin of a plurality of integrated circuit chips forms a data line and is connected to the MCU; an integrated circuit chip cooperates with a key with a magnetic element to obtain a key information, and according to different communication protocols, the RGB magic color driving circuit and the magnetic induction integrated circuit share the data line, and transmit the RGB color grayscale information and the key information in a time-sharing manner. The present invention cascades all the key information through the data line, saves a lot of wiring space, reduces the design difficulty of the PCB, reduces the number of electronic components by multiples, and provides a variety of different code sending methods and working methods, making its application simpler and more efficient.

The invention provides a hysteresis loop prediction model establishment method and device, electronic equipment and a storage medium, and the method comprises the steps: carrying out a hysteresis characteristic experiment on a ferromagnetic material, setting hysteresis loop related characteristics comprising magnetic induction intensity waveform data and magnetic field waveform data under the excitation of preset sine waves under different magnetic induction intensity peak values, establishing a hysteresis loop prediction model comprising an improved convolutional neural network model and a K-nearest neighbor algorithm model, training the improved convolutional neural network model, inputting a magnetic induction intensity peak value and magnetic induction intensity waveform data, and outputting magnetic field waveform data; and adjusting the magnetic field waveform data based on the feature data by using a K-nearest neighbor algorithm model to obtain a final magnetic field waveform result. According to the method, the hysteresis loop prediction model is established based on the improved convolutional neural network in combination with the K nearest neighbor algorithm, the overfitting phenomenon can be prevented, the training speed is higher, the resource consumption is lower, and rapid iteration and adjustment in practical application are facilitated.

The invention relates to the technical field of metal pipe nondestructive testing, and discloses a method for detecting an oxide skin in a stainless steel pipe by an electromagnetic induction technology, which comprises the following steps: S1, generating multi-frequency excitation signals which comprise a high-frequency signal and a low-frequency signal which are used for respectively detecting the surface characteristics and deep distribution of the oxide skin in the stainless steel pipe; s2, applying the excitation signal to the stainless steel tube through an excitation coil, wherein the excitation coil adopts a multi-layer structure to ensure uniform distribution of a magnetic field; and S3, stainless steel pipe induction signals under the action of the excitation signals are collected, wherein the induction signals comprise response signals of the surface oxide skin and interference signals of the base body. According to the invention, the multi-frequency excitation technology is combined with signal decomposition and fusion processing, so that comprehensive detection of the thickness and distribution of the oxide skin is realized. Based on high sensitivity of high-frequency signals to surface characteristics and deep penetrability of low-frequency signals, detection results can accurately reflect characteristics and thickness distribution of the oxide skin at different depths.

The invention discloses an intelligent electromagnetic induction heating method and system for multi-parameter collaborative frequency domain separation, and provides a synchronous parameter acquisition and frequency domain separation processing scheme for solving the problems of temperature detection lag, insufficient frequency domain interference processing and weak dynamic adaptation capability in the prior art. Transient current, voltage and change rate (a first parameter group) of an electromagnetic coil are synchronously acquired, and high-frequency fluctuation (greater than or equal to 10kHz) and low-frequency disturbance (1t, 1t) are converted into low-frequency fluctuation (greater than or equal to 10kHz) by combining environment temperature, cookware materials and user preferences (a second parameter group); 10kHz) is used for frequency spectrum separation. Phase difference features are extracted through band elimination filtering and FFT, heating priorities are corrected in combination with dynamic compensation factors, and a segmented heating curve is generated through time-frequency domain weighted fusion. And the system adjusts PWM parameters in real time, and triggers adaptive protection when detecting that the phase is abnormal or the power frequency exceeds the limit. According to the method, the limitation of single-frequency-band detection is broken through, high-frequency noise suppression and low-frequency disturbance compensation are realized, and accurate temperature control of ferromagnetic / non-ferromagnetic cookware is supported.

The present invention relates to the technical field of electroacoustic transduction. Disclosed in the present invention are a sound production unit and an electronic device. The sound production unit comprises a housing and a magnetic circuit system, which is arranged in the housing and comprises a magnetically conductive yoke, a central magnetic portion and a side magnetic portion, wherein the central magnetic portion and the side magnetic portion are arranged on the magnetically conductive yoke, and the side magnetic portion is arranged on an outer side of the central magnetic portion; the central magnetic portion comprises central magnetic steel and a central magnetically conductive plate, with two opposite sides of the central magnetic steel being respectively connected to the central magnetically conductive plate and the magnetically conductive yoke; the side magnetic portion comprises side magnetic steel and a side magnetically conductive plate, with two opposite sides of the side magnetic steel being respectively connected to the side magnetically conductive plate and the magnetically conductive yoke; the central magnetically conductive plate and / or the side magnetically conductive plate are / is made of a cobalt alloy material; and the magnetically conductive yoke is also made of a cobalt alloy material. A thinned design of the sound production unit of the present invention is realized, and the magnetic induction intensity of the magnetic circuit system is also effectively improved, thereby increasing the BL value, and thus the acoustic performance requirement of the sound production unit can be met.

The invention relates to a magnetic-inductive flowmeter (1) comprising: - a measuring tube (2) for guiding the medium, wherein a longitudinal plane (LE) divides the measuring tube (2) into a first side and a second side, the measuring tube (2) having an outer surface; - a magnetic field-generating device (3), which magnetic field-generating device (3) comprises: at least one saddle coil (4), wherein the saddle coil (4) is arranged on the outer surface, wherein a coil wire of the saddle coil (4) delimits a saddle coil interior (5), a saddle coil core arrangement (6) with at least one saddle coil core (7), wherein the saddle coil core arrangement (6) is arranged in the saddle coil interior (5), wherein a central angle α in a cross-section through the magnetic-inductive flowmeter (1) spans a minimum circular sector in which the saddle coil core arrangement (6) is arranged, wherein for the central angle α It is true that 10 ≤ ≤≤ 50; and at least four measuring electrodes (11, 12, 13, 14), wherein at least two (11, 13) of the at least four measuring electrodes (11, 12, 13, 14) are arranged on the first side and also at least two (12, 14) of the at least four measuring electrodes (11, 12, 13, 14) are arranged on the second side, wherein a central angle θ spans a minimum circular sector in the cross-section in which the at least two measuring electrodes (12, 14) of the first side are arranged, wherein for the central angle θ, 10 ≤ θ ≤ 35.;

The invention belongs to the field of electromagnetic particle simulation, and relates to a vacuum confluence region electromagnetic particle simulation method, system, equipment and medium, and the method comprises the following steps: S1, constructing a particle simulation domain of an electric field and a magnetic field of a vacuum confluence region, injecting particles into the particle simulation domain, and carrying out the regional decomposition of the particle simulation domain to obtain a plurality of sub-domains; s2, acquiring charge density and current density of grid points in each sub-domain; discretizing a Maxwell equation set into a form of a Cx = D equation, substituting the charge density and the current density of the grid points in each sub-domain into the Cx = D equation, and solving the Cx = D equation by adopting a GMRES algorithm to obtain potential and vector magnetic potential distribution in each sub-domain; s3, the electric field intensity and the magnetic induction intensity of the grid points in each sub-domain are solved, the electric field and the magnetic field borne by the particles are obtained, and therefore the positions of the particles in the next time step in each sub-domain are determined; and S4, updating the electric field and the magnetic field borne by the particles in each sub-domain in the next time step.

The invention provides a simulation method of a direct current electromagnetic switch series connection multi-fracture arc. The method comprises the following steps: S1, coupling electromagnetic system simulation and mechanical dynamics, namely obtaining a two-dimensional interpolation table of electromagnetic attraction, coil current and iron core displacement through electromagnetic system simulation, and importing a mechanical dynamics simulation model to obtain the breaking speed of a direct-current electromagnetic switch contact; s2, magnetic induction intensity of different positions is obtained through a magnetic blow-out system model, and based on the magnetohydrodynamic theory, a physical field is coupled to establish an arc simulation model of a single fracture; s3, performing series multi-fracture arc simulation by means of coupling an external circuit; according to the method, the influence of different parameters (the number of fractures, asynchronous breaking time, breaking speed, magnetic induction intensity distribution, gas physical property parameters, different loads and the like) on the evolution process of the series multi-fracture arc can be analyzed.

The invention relates to a high-frequency and high-performance iron-nickel alloy magnetic powder core and a preparation method and application thereof, belongs to the field of metal magnetic powder cores, and solves the problems that in the prior art, when a metal magnetic powder core is applied at high frequency, high magnetic conductivity, high magnetic conductivity stability and high quality factor are difficult to consider, and the saturation flux density is low. And the preparation process is tedious. The invention discloses a preparation method of a high-frequency high-performance iron-nickel alloy magnetic powder core. The preparation method comprises the following steps: S1, preparing raw materials; s2, performing pretreatment; s3, the pretreated iron-nickel alloy powder and nano SiO2 powder are blended, and inorganic insulation coating powder is obtained; s4, adding the inorganic insulating coating powder into a first coating agent to obtain inorganic and first organic insulating coating powder; s5, adding the inorganic and first organic insulation coating powder into a second coating agent to obtain inorganic and double-layer organic insulation coating powder; and S6, compression molding. The comprehensive magnetic performance of the iron-nickel magnetic powder core is improved, and the preparation process is simplified.

The invention discloses a secure magnetic communication method and system based on a key index. The method comprises the following steps: generating four columns of chaotic sequences according to a set key initial value by using a four-dimensional hyper-chaotic model; inserting the two columns of chaos sequences into original transmission data, performing convolution encryption to obtain an encrypted bit stream, performing serial-parallel conversion on the encrypted bit stream to obtain a data matrix H, and performing subcarrier scrambling and symbol scrambling on the data matrix H in sequence according to the other two columns of chaos sequences to obtain a data matrix P; taking the key matrix as an index, performing QPSK mapping on elements in the data matrix P through a constellation codebook to obtain constellation points, and forming a constellation diagram by the constellation points; transmitting the constellation diagram to a receiver through a transmitter; in response to the constellation diagram received by the receiver, decrypting the constellation diagram to obtain original transmission data; according to the invention, the problem that the magnetic induction signal is easy to steal is solved, and the security of the communication system is improved.

The invention provides a lossless helical blade wear real-time monitoring system and detection method, and relates to the technical field of helical blade wear detection, and the lossless helical blade wear real-time monitoring system comprises at least one group of sensing assemblies and a processing terminal. Each sensing assembly comprises at least one sensing unit and is arranged on a barrel of the spiral conveyor, and each sensing unit is suitable for obtaining the magnetic induction intensity change in the process that a spiral blade is abraded in a detection range or rotates towards and away from the sensing unit and outputting a detection signal; the processing terminal is in communication connection with the sensing unit and is suitable for obtaining a detection curve representing the change of the relative position of the spiral blade and the sensing unit according to the detection signal and comparing the detection curve with a preset calibration data set so as to determine the abrasion loss of the spiral blade in the detection range according to the matching degree of the detection curve and the calibration data set.

The three-axis Hall magnetic sensing chip comprises a magnet gathering body, a first Hall element group and a second Hall element group, the first Hall element group and the second Hall element group are arranged in a plane at intervals, the magnet gathering body is arranged on Hall elements, and the orthographic projection of the magnet gathering body on a Hall plane has a first direction symmetry axis and a second direction symmetry axis which are orthogonal. The first Hall element group comprises two first Hall elements which are connected in a contrast difference mode, wherein the magnetic induction centers of the two first Hall elements are located on a first-direction symmetric axis and are symmetrically arranged relative to a second-direction symmetric axis. The second Hall element group comprises two second Hall elements which are located on the same side of the first direction symmetry axis and are symmetrically arranged relative to the second direction symmetry axis, and the magnetic induction centers of the two second Hall elements are perpendicular to the connecting line between the orthogonal intersection points of the first direction symmetry axis and the second direction symmetry axis; the magnetism gathering body is located on one side of the connecting line of the two magnetic induction centers. According to the invention, a high inter-axis signal rejection ratio is realized, and the Z-axis signal can be directly output.

The invention belongs to the technical field of electric power and communication engineering, and particularly relates to an intelligent line patrol instrument based on multi-band electromagnetic induction and TDR fusion, and the intelligent line patrol instrument comprises a signal transmitting end which comprises a main control unit, a multi-band electromagnetic signal generator, a TDR pulse module and a self-adaptive coupling circuit. And the signal receiving end comprises a three-axis magnetic field sensor, an ADC module, an FPGA processing unit, a DSP processing unit and a touch display screen. The invention relates to an intelligent line patrol instrument combining multi-band electromagnetic induction and time domain reflection (TDR) technologies, which is used for path tracking, depth measurement and high-precision fault positioning of underground cables and optical cables, and is particularly suitable for underground pipeline maintenance and construction scenes under complex electromagnetic environments (such as transformer substations and dense pipeline areas).

The invention discloses a multi-mode unmanned aerial vehicle system and method for detecting the thickness of a bridge concrete protection layer. The system comprises a multi-mode unmanned aerial vehicle platform, a contact type mechanical arm, an electromagnetic induction steel bar detection module, a wireless data transmission module, an area array laser radar module and a binocular camera module. The contact type mechanical arm is installed on the unmanned aerial vehicle platform and used for executing contact type nondestructive testing. The electromagnetic induction steel bar detection module is installed at the tail end of the contact type mechanical arm and used for making contact with the bridge surface and measuring the thickness of a steel bar protection layer. The wireless data transmission module is installed on the unmanned aerial vehicle platform and used for returning the video of the view angle of the unmanned aerial vehicle to the ground station operation platform in real time, and the ground station operation platform observes and controls the unmanned aerial vehicle according to the returned video; the area array laser radar module is installed below the contact type mechanical arm and used for carrying out pose estimation and obstacle avoidance during adsorption mode switching. The binocular camera module is arranged at the front end of the contact type mechanical arm and used for collecting images of a detected area and conducting unmanned aerial vehicle autonomous positioning.

The invention provides a cement-based material residual magnetism intensity detection device, a detection method and an evaluation method. The cement-based material residual magnetism intensity detection device comprises a magnetic shielding cylinder, a fluxgate magnetometer and a test tool, the magnetic shielding cylinder is used for shielding a magnetic field to ensure stable test environment magnetic field; the fluxgate magnetometer comprises a fluxgate probe and a fluxgate digital display meter, the fluxgate probe is used for measuring a vector value of space magnetic induction intensity at a position corresponding to the fluxgate probe, and the fluxgate digital display meter is used for displaying a residual magnetism intensity measured value measured by the fluxgate probe; the test tool is arranged in the magnetic shielding cylinder and is used for placing a sample to be tested and fixing a fluxgate probe; according to the invention, a fluxgate magnetometer and a magnetic shielding cylinder are adopted to detect the residual magnetism intensity of the cement-based material, a standardized detection process and a test method are provided for solid components, a liquid mixture and a molded test block, and quantitative characterization of the distribution rule of the residual magnetism intensity of the cement-based material is realized through fewer detection points.

The invention relates to an active source magnetization-time domain electromagnetic induction polarization multi-parameter extraction method, and provides an active source magnetization-time domain electromagnetic induction polarization multi-parameter extraction method aiming at induction response caused by conductivity, polarization response caused by chargeable property and magnetization response caused by magnetic complex physical property in polymetallic ore detection. When the emission current is in a flat-topped stage, based on an active magnetic method, magnetic susceptibility extraction is carried out by using an Oxim method; when the emission current is in a turn-off stage, resistivity and polarization extraction is carried out by using a depth Q network method based on a time domain electromagnetic method by taking the extracted magnetic susceptibility as a constraint condition; and finally, multi-parameter extraction of resistivity, polarizability and magnetic susceptibility of the active source magnetization-time domain electromagnetic induction polarization method is realized.

The invention provides a plasma electromagnetic field detection method and device, a terminal and a storage medium, and relates to the technical field of plasma diagnosis. The method comprises the steps that a plasma electromagnetic field physical model is constructed, electromagnetic field data are collected, and the electromagnetic field data comprise electric field intensity and magnetic induction intensity of each time-space point and time in plasma; constructing a plasma time-space domain physical information neural network architecture, a multi-objective loss function and a self-adaptive sampling strategy, and training the plasma time-space domain physical information neural network architecture based on the multi-objective loss function, the self-adaptive sampling strategy and the electromagnetic field data; and detecting the electromagnetic field distribution of the plasma to be detected by using the trained plasma time-space domain physical information neural network architecture. According to the invention, the accuracy and reliability of detection can be improved.

The invention belongs to the technical field of magnetic functional materials, and particularly relates to a nanocrystalline magnetically soft alloy and a preparation method and application thereof. The invention provides a nanocrystalline soft magnetic alloy which comprises the following chemical components: Fe, Si, B, Nb, Cu, P and rare earth metal, and the rare earth metal is selected from at least one of Nd and Sm. According to the nanocrystalline magnetically soft alloy, a proper amount of rare earth metal is added, the ferromagnetic coupling exchange effect between ordered phases of the nanocrystalline magnetically soft alloy is improved, so that the magnetic induction intensity and the high-frequency magnetic conductivity of the nanocrystalline magnetically soft alloy are both improved, the magnetic conductivity of the nanocrystalline magnetically soft alloy at 100 kHz can reach 42000 or above, and the high-frequency magnetic conductivity of the nanocrystalline magnetically soft alloy at 100 kHz can reach 42000 or above. Meanwhile, the saturation flux density reaches up to 1.75 T or above, and the coercive force is as low as 0.8 A / m.

A tactile sensor, consisting of a flexible main body with embedded magnets, soft magnetized cilia on the main body, and magnetic sensing elements embedded on the substrate layer. The magnetic sensing elements produce signals in response to the changes in the magnetic field. Tactile interaction with the main body and cilia displaces the magnetic material and changes the magnetic field. Cilia are sensitive to sub-mN force magnitudes, the main body is sensitive to larger range of force magnitudes. Multiple sensing elements, magnets and cilia may be distributed over large and curved surfaces. Three-axial forces can be measured using the sensor.

The invention discloses a current inversion method for a steel tape armored multi-core cable, and the method comprises the steps: S1, setting a plurality of measurement points at a to-be-measured part of a to-be-measured multi-core cable, building a polar coordinate system with the geometric center of the to-be-measured multi-core cable as an original point, and constructing a position coefficient matrix, a conductor current matrix, and an attenuation coefficient matrix; s2, assigning an initial value to the unknown variable, and calculating to obtain an initial conductor current matrix and an initial attenuation coefficient matrix; s3, searching a local optimal solution of the attenuation coefficient matrix through a random optimization method; s4, constructing a linear equation set taking the conductor current matrix as an unknown variable to solve the conductor current matrix; and S5, after the sampling value of the magnetic induction intensity component is updated, solving the linear equation set, and calculating to obtain the current value of each conductor of the current cable. According to the method, on the basis of the time-invariant characteristic of the magnetization curve, the undetermined coefficient of the approximation function is solved by using the stochastic optimization algorithm, the nonlinear attenuation coefficient of the steel tape armoring of the target cable is solved, the influence of the steel tape armoring on the current inversion result is corrected, and the measurement efficiency and precision can be improved.

The utility model discloses a brushless servo motor easy to install and debug, which comprises a shell, a rotor, a stator and an encoder assembly, and is characterized in that the rotor comprises a rotating shaft and a magnetic ring; the shell comprises a shell and a first end cover; the stator comprises a stator core and a winding; the magnetic ring is an M-pole magnetic ring; the encoder assembly comprises a PCB and a magnetic induction device, the magnetic induction device comprises N groups of Hall sensors, and N is 1 or 2; each group of Hall sensors comprises two Hall sensors, and one Hall sensor rotates 90 degrees around the center line of the rotating shaft to reach the position of the other Hall sensor; each Hall sensor is eccentrically arranged relative to the center line of the rotating shaft, and a gap is formed between each Hall sensor and the magnetic ring in the axial direction of the rotating shaft. According to the utility model, the Hall sensor directly senses the magnetic field of the magnetic ring of the rotor to determine the angular position of the rotor, an independent sensing magnet does not need to be arranged on the rotor, the structure is simple, and the installation process is simplified.

The invention relates to an aluminum bar permanent magnetic induction heating method for extruding an aluminum alloy profile, which mainly solves the problem of poor heating uniformity of an aluminum bar heated by electromagnetic induction in the prior art, and comprises the following steps of: a, placing the aluminum bar on a conveying mechanism for conveying, pushing the aluminum bar into a conveying channel of a heating mechanism through a pushing mechanism, and heating the aluminum bar in the conveying channel; the aluminum bar is arranged in a composite magnetic field generated by the permanent magnet assembly; b, a gradient magnetic field is formed through alternate arrangement of permanent magnet polarities of the permanent magnet assembly, meanwhile, the electromagnet generates a high-frequency alternating magnetic field through alternating current, eddy current is excited on the surface of the aluminum bar through the magnetic field coupling effect, conduction type heating from outside to inside is achieved, and the electromagnet is independently controlled through a sub-power source of the power source system; local magnetic field compensation is realized through independent current control, and the compensation range is + / -0.3 T; c, the temperature of the aluminum bar is detected through an infrared temperature sensor and fed back to a control system, and the distance between the permanent magnet unit and the aluminum bar is dynamically adjusted.

The invention discloses a processing method and device for sensing the position of an elevator, and relates to the technical field of elevator position sensing, which comprises the following steps: running in a full stroke under no-load and rated load conditions respectively, recording pulse signal data of a magnetic induction sensor when the elevator stops on each floor and the maximum value of a pulse signal when the elevator passes through each floor, establishing a dual-mode reference database; elevator regular no-load running full-stroke detection is carried out, and elevator real-time stopping deviation is analyzed; when the elevator is powered off or breaks down, counting of the pulse counters corresponding to the current top sensor and the current bottom sensor is obtained, elevator power-off or fault stopping floors are determined, elevator power-off or fault stopping deviation is analyzed, elevator power-off or fault actual stopping deviation is obtained after elevator real-time stopping deviation is subtracted, and the position of the elevator is determined. And the elevator trapped floor and the position of the elevator trapped floor in the hoistway can be quickly positioned, the response time is shortened, blind operation is avoided, and the secondary accident risk is reduced.

A cartridge is provided that includes a first accommodating portion configured to accommodate toner, a first rotation shaft configured to be rotatable about a first rotation axis line, a first flexible member fixed to the first rotation shaft, a first magnetized member provided on the first flexible member, a second accommodating portion configured to accommodate toner to be supplied to the first accommodating portion and being aligned with the first accommodating portion in a first direction, a second rotation shaft configured to be rotatable about a second rotation axis line, a second flexible member fixed to the second rotation shaft, a second magnetized member provided on the second flexible member, and a magnetism sensing sensor provided between the first rotation axis line and the second rotation axis line in the first direction, and configured to sense magnetism in a sensing-capable range.

The invention discloses a bipolar magnetic induction integrated circuit and a switch, the bipolar magnetic induction integrated circuit corresponds to a key switch, and each key switch comprises a switch body and a magnetic element; the switch body comprises a component capable of moving up and down, the bipolar magnetic induction integrated circuit is arranged on the surface of the PCB, and the magnetic induction direction of the bipolar magnetic induction integrated circuit is a vertical direction; the magnetic element is positioned above the bipolar magnetic induction integrated circuit and is arranged on the part capable of moving up and down, and the NS pole direction of the magnetic element is a vertical direction or a horizontal direction; the magnetic element moves up and down perpendicular to the magnetic induction horizontal plane of the bipolar magnetic induction integrated circuit. The bipolar magnetic induction integrated circuit is higher in anti-jamming capability, more suitable for dynamic control and high in function integration level, the bipolar Hall chip integrates a latch function (such as a latch type Hall), the state can be kept until the magnetic field is reverse, and the bipolar magnetic induction integrated circuit is suitable for accurate position memory.