739 results about "Electromagnetic induction" patented technology

The invention relates to the technical field of mutual inductor tests, and provides a mutual inductor test abnormal data automatic filtering analysis method and system, and the method comprises the steps: obtaining magnetic field data, electric field data and thermal field data, respectively carrying out the feature extraction and weighted fusion, and obtaining a multi-physical field fusion feature vector; constructing an electromagnetic induction chain type propagation graph, calculating the weight of an edge in the graph, constructing a magnetic flux conservation constraint graph convolutional neural network, learning propagation and evolution modes of transformer test abnormity, and obtaining a coupling abnormity feature vector; the coupling anomaly feature vectors are classified, normal data, single physical field abnormal data and multi-physical field coupling abnormal data are recognized, and corresponding data are judged as abnormal data and filtered; and carrying out physical mechanism analysis on the filtered abnormal data to obtain an abnormal detection report. According to the invention, high-precision automatic identification, filtering analysis and physical mechanism traceability diagnosis of transformer test abnormal data are realized.

The invention relates to the technical field of automatic welding, and discloses a micro welding seam tracking method and system based on electromagnetic induction. According to the method, a high-frequency alternating magnetic field is applied to a welding seam area through an exciting coil in the micro electromagnetic sensing core; an induction coil in the electromagnetic sensing core is used for detecting magnetic field disturbance caused by geometric shape changes of the weld groove, and induction signals are obtained; processing the induction signal through a signal processing circuit integrated in the probe, namely converting the impedance change of the coil into a voltage signal, demodulating and filtering the voltage signal, and extracting a direct-current voltage signal corresponding to the deviation of the probe relative to the central position of the welding seam; the direct-current voltage signals serve as position feedback information to be output to a welding robot control system; and the movement track of the welding robot is adjusted in real time according to the position feedback information, and welding seam tracking and path deviation correction are achieved.

The invention discloses a steel wire rope nondestructive testing method and system based on sensing and physical feature fusion, and belongs to the technical field of steel wire rope nondestructive testing. The method comprises the following steps: firstly, carrying out saturation magnetization on a steel wire rope through an axial Gaussian difference excitation probe so as to improve the signal-to-noise ratio of a defect magnetic flux leakage signal; and meanwhile, the instantaneous acceleration is synchronously acquired through the inertial measurement unit. And establishing a speed-signal model based on the law of electromagnetic induction, and performing dynamic speed compensation on the magnetic flux leakage original voltage signal. And then, quantitatively extracting characteristic parameters with clear physical significance, such as peak voltage, maximum gradient, full width at half maximum and the like, from the standardized magnetic flux leakage signal, fusing the characteristic parameters with deep characteristics extracted by the deep learning model, and inputting a fused characteristic vector into a full-connection neural network and a classifier to realize defect type identification and degree evaluation. According to the invention, high-precision and interpretable intelligent detection and residual life prediction of steel wire rope defects can be realized, the detection reliability is obviously improved, and predictive maintenance is supported.

The utility model discloses an electromagnetic induction heating module, heating equipment and a slab production line, and relates to the technical field of induction heating. The heating module comprises a shell, a coil, and a first magnetic conductive assembly, a second magnetic conductive assembly and a third magnetic conductive assembly which are sequentially arranged along the length direction of the coil, the first magnetic conductive assembly and the third magnetic conductive assembly respectively correspond to two side parts of a to-be-heated object, and the second magnetic conductive assembly corresponds to the middle part of the to-be-heated object; the first magnetic conductive assembly and the third magnetic conductive assembly each comprise a first magnetizer which is matched with the coil and can move up and down, and the second magnetic conductive assembly comprises a second magnetizer which is matched with the coil and is fixed. By adjusting the gap between the first magnetizer and the to-be-heated object, the heating temperature of the area corresponding to the to-be-heated object is adjusted, and the temperature uniformity of the to-be-heated object in the width direction is achieved.

The invention relates to the technical field of defect detection, and discloses an insulating sleeve defect detection method and device based on electromagnetic induction, and the method comprises the steps: employing a main detection coil to excite a composite insulating sleeve to generate an electromagnetic field, and employing an auxiliary compensation coil to receive a mixed induction signal; performing interface reflection component extraction on the mixed induction signal, and calculating a dielectric parameter value of the composite insulating sleeve; calculating an interface compensation parameter of the auxiliary compensation coil based on the dielectric parameter value; generating a compensation magnetic field opposite to an interface reflection phase by using an auxiliary compensation coil according to an interface compensation parameter, and receiving a compensated detection signal by using a main detection coil and performing phase gradient analysis to obtain a position coordinate and a size parameter of an internal defect of the composite insulating sleeve; according to the invention, hardware-level separation of electromagnetic excitation and interface compensation is realized, active inhibition of interface reflection is carried out from a signal source, and automation and intelligentization of defect detection of the composite insulating sleeve are further realized.

The invention discloses a forming process of a steel lining polytetrafluoroethylene concentric reducing pipe. The forming process comprises the following specific steps that S1, pretreatment is conducted, specifically, after a steel pipe is cut, laser rust removal is conducted, and primer containing a silane coupling agent is sprayed on the surface; s2, powder filling is conducted, specifically, a mold is placed in the center of the steel pipe, and then PTFE-containing powder is added into modified powder according to 1.3 times of the volume between the steel pipe and the mold; the steel pipe enters a sintering area after the temperature of the steel pipe reaches 200 DEG C in a preheating area, PTFE powder is melted at the temperature of 380 DEG C and is subjected to roll coating forming, gradient cooling is conducted in a slow cooling area at the speed of 5 DEG C / min, the temperature is stabilized at 260 DEG C, internal stress is eliminated, an electromagnetic induction coil is arranged in the preheating area, and microwave heating is adopted in a forming area; s4, static pressure forming; s5, reducing forming is carried out; and S6, post-treatment. The forming process of the steel lining PTFE concentric reducing pipe has the effects that the phenomenon that the lining layer is cracked or stripped after cooling is avoided, and the yield is increased.

The utility model relates to the related technical field of motors of electric motorcycles, in particular to a motor of an electric vehicle, which comprises a motor shaft, first magnetic steel is fixedly connected to the inner side surface of an iron ring, and second magnetic steel is fixedly connected to the inner side surface of the iron ring. According to the electric vehicle motor, through the arrangement of the first magnetic steel and the second magnetic steel, when current enters the winding of the stator 11, the winding of the stator 11 can generate a rotating magnetic field according to the law of electromagnetic induction, and under the interaction of the magnetic field, generated electromagnetic force can drive the motor shaft 1 to rotate, so that electric energy is more effectively converted into mechanical energy; the double-row magnetic steel mode improves the strength of single magnetic steel, the double-magnetic-circuit mode is adopted, the two pieces of short magnetic steel are easy to machine, the manufacturing cost is low, the product cost is reduced, and the cost performance is improved.

The invention relates to the technical field of electric variable and magnetic variable measurement, in particular to a permanent magnet motor rotor eccentricity fault diagnosis method, which comprises the following steps: step 1, composition and working principle of detection equipment, the equipment comprises a bracket, a coil group, a magnetic ring, current detection equipment and an indicator light, the coil group is formed by winding a high-magnetic-permeability magnetic material, and the magnetic ring is formed by winding a high-magnetic-permeability magnetic material; the magnetic ring is mounted on an output shaft of the motor; 2, an equipment installation step; according to the scheme, the detection device comprising the support, the coil assembly, the magnetic ring, the current detection device and the indicator lamp is constructed, and the current change of the coil assembly is monitored based on the electromagnetic induction principle, so that high-precision and real-time diagnosis of the eccentricity fault of the permanent magnet motor rotor is realized. The method can accurately judge whether the rotor is eccentric or not, the eccentric degree and the eccentric angle, can timely give out early warning according to the diagnosis result, provides a maintenance decision basis, effectively guarantees safe and stable operation of the motor, and improves the system reliability.

The invention provides a circuit breaker fastener assembly and disassembly method and system based on thermally induced phase locking. The method comprises an installation stage and a disassembly stage. The installation stage comprises the following steps: assembling a circuit breaker assembly, pre-tightening a threaded fastener, and debugging an opening distance and an over travel to standard values; a first preset torque T1 is adopted for first-time fastening; the threaded fastener is heated to the target temperature Ttarget at the controllable heating rate through an electromagnetic induction heating device, and an accurate expansion gap is generated; carrying out secondary fastening by adopting a second preset moment T2 in a thermoplastic window period; and naturally cooling to form permanent thermally induced interference fit. The dismounting stage comprises the steps that a pre-cooling low-temperature medium is adopted to cool the threaded fastener to the target temperature Treve at the rapid cooling rate, and interference fit is converted into clearance fit; and lossless dismounting is realized. The invention relates to the technical field of circuit breakers.

The invention discloses a heating monitoring method for a stainless steel seamless tube in a heat treatment furnace, which belongs to the technical field of metal heat treatment and specifically comprises the following steps: acquiring an electromagnetic induction signal of a steel tube in rotation advancing in real time and binding spatio-temporal information; kinematics inversion is carried out on the spatio-temporal information based on the movement speed of the steel pipe, and an electromagnetic parameter evolution track of each physical point on the surface is reconstructed; continuously deviated abnormal points are identified based on the evolution trajectory and clustered to extract electromagnetic characteristics of the heating abnormal area, temperature deviation is obtained through a preset electromagnetic-temperature mapping model, and a compensation instruction is generated; and predicting space-time coordinates of the abnormal area reaching the next heating area, and driving the corresponding independent heating unit to execute dynamic energy compensation in the matched time window. Real-time, global and accurate sensing and closed-loop regulation and control of the heating uniformity of the moving workpiece are achieved, the uniformity and stability of heat treatment quality are remarkably improved, and energy consumption is reduced.

The invention discloses a deep sea cable fault accurate positioning method based on electromagnetic induction and transient characteristic analysis, and relates to deep sea electric power engineering. According to the technical scheme, the method comprises the steps of 1, signal excitation used for transmitting a signal source; 2, signal filtering is carried out to counteract geomagnetic background noise; 3, signal correction is carried out to solve the problems of modal aliasing and endpoint effect existing when a traditional EMD is used for processing complex signals; 4, signal feature extraction, wherein transient pulse features in the signals can be effectively enhanced; and step 5, fault positioning. The method is mainly used for non-intrusive fault detection of the power cable in the kilometer-level deep sea high-pressure environment, and high-precision fault point positioning is achieved.

The invention discloses an oil cylinder sealing optimization system based on electromagnetic induction regulation and control, and the system comprises an electromagnetic induction unit, a coil of which generates an alternating magnetic field in a sealing area, and acts on a magnetic sensitive composite material sealing element; the sensor unit monitors the leakage rate, the temperature and the pressure in real time; the control unit executes a self-adaptive PID control algorithm, dynamically adjusts PID parameters according to sensor data, and outputs a PWM signal to control the electromagnetic induction unit so as to optimize the sealing performance in real time; the controllable alternating magnetic field is applied to the magnetic-sensitive sealing element through the electromagnetic induction unit, the elastic modulus and the contact pressure of the magnetic-sensitive sealing element are regulated in real time through the magnetocaloric or magnetostrictive effect, meanwhile, key parameters such as leakage, temperature and pressure are monitored in real time in combination with a sensor, and the sealing state is rapidly responded and dynamically adjusted through a self-adaptive PID algorithm in the control unit. Oil cylinder sealing can be self-optimized according to working condition changes, and the problem that traditional static sealing cannot adapt to dynamic working conditions is solved.

The invention discloses a handheld electromagnetic induction type electric soldering iron, which belongs to the technical field of electromagnetic induction, and comprises a shell, an electric soldering iron core, an electric soldering iron core and an electric soldering iron core, the transformer is arranged in the accommodating cavity; the heating coil is arranged in the accommodating cavity and is arranged on one side of the transformer; the heated part is arranged in the accommodating cavity and is arranged in the alternating magnetic field generated by the heating coil; the soldering bit is connected to the end, away from the transformer, of the heated part and extends out of the shell. The transformer, the heating coil and the heated part are integrated in the containing cavity of the shell, convenient equipment design is achieved, the heated part is directly heated in a non-contact mode through the heating coil according to the electromagnetic induction principle, and rapid temperature rising and efficient energy conversion are achieved; due to the fact that large current does not pass through the soldering bit, the whole structure is safer, the soldering bit can simply extend out of the shell, and replacement and operation are convenient.

The invention discloses a device for converting mechanical energy into electric energy, relates to the technical field of energy collection, and aims to solve the problems of unbalanced voltage and current output characteristics and low energy recovery efficiency in the traditional single-mode energy capture technology. Mechanical vibration is converted into electric energy through the direct piezoelectric effect; an electromagnetic energy harvesting module is further arranged in the shell, and electricity is generated according to the electromagnetic induction principle; the frequency self-tuning mechanism is connected with the electromagnetic energy harvesting module and is used for adaptively adjusting the frequency response range of the electromagnetic energy harvesting module according to the vehicle speed and the road condition change; the energy collection circuit board is connected with the output end of the piezoelectric energy harvesting module and the output end of the electromagnetic energy harvesting module and used for converting collected alternating current into stable direct current. Through a piezoelectric and electromagnetic composite structure, collaborative improvement of output voltage and current is achieved, the frequency response range is widened through the frequency self-tuning mechanism, and self-adaptive efficient energy capture of broadband vibration is achieved.

The utility model discloses an internal heating type electromagnetic oven, which comprises an oven body and an electromagnetic heating component arranged in the oven body, the electromagnetic heating component comprises a central tube arranged in the oven body, an electromagnetic coil wound on the central tube and a heating cylinder sleeved outside the electromagnetic coil, and the heating cylinder is made of electromagnetic induction materials. And the central tube is made of a non-magnetic material. After the electromagnetic coil is powered on, the heating cylinder emits heat, and therefore food in the oven body is heated in an electromagnetic heating mode. Due to the fact that the heating cylinder is located in the center of the furnace cavity in the furnace body, the heating cylinder serves as a heat source, the temperature of the heating cylinder is the highest, and the heating cylinder is surrounded by the furnace cavity, most heat emitted by the heating cylinder can be used for heating the furnace cavity, only the portions, connected with the furnace body, of the two ends of the heating cylinder have little heat loss, and therefore the heat utilization efficiency is improved.

This application discloses a wind turbine and a lightning strike current measuring device. The wind turbine includes a lightning arrester, a lightning conductor, a magnetic field sensor, and a controller. The lightning arrester is installed on the blade of the wind turbine to receive lightning strike current. The lightning conductor is located inside the blade and arranged along the length of the blade. One end of the lightning conductor is electrically connected to the lightning arrester, and the other end is electrically connected to the nacelle of the wind turbine. The magnetic field sensor is installed on the yaw platform of the wind turbine to detect the electromagnetic induction value generated when the lightning strike current flows through the yaw platform. The controller is electrically connected to the magnetic field sensor and receives the electromagnetic induction value and calculates the lightning strike current value based on the electromagnetic induction value. The technical solution provided by this application, through the magnetic field sensor preset on the yaw platform, detects the electromagnetic induction value generated when the current flows through in real time and transmits the electromagnetic induction value to the controller electrically connected to it. The controller can accurately calculate the lightning strike current value.

This utility model relates to the field of cast iron pot mold technology and discloses a multi-temperature zone circulating preheating heating device for cast iron pot molds. It includes a base, with support columns symmetrically fixedly connected to the top of the base in all directions. A fixed seat is fixedly connected to the top of each of the four support columns. A pressing and heating mechanism is provided on the top of the base. Multi-temperature zone differentiated heating is achieved through a combination of an electromagnetic induction coil and an infrared radiation heating tube. The electromagnetic induction coil is arranged between the bottom of the lower mold base and the inner mold, using the principle of electromagnetic induction to rapidly heat the bottom of the mold, suitable for efficient heating of thick-walled parts of the cast iron pot mold. The infrared radiation heating tube is located between the lower mold base and the inner mold, above the heat insulation ring, and can uniformly radiate heat to the sidewalls of the mold. The combined effect of these two methods significantly shortens the preheating time compared to traditional single heating methods, while simultaneously meeting the temperature requirements of different parts of the mold, effectively improving production efficiency.

The utility model provides a flow-adjustable high-precision wear-resistant metering valve with a real-time monitoring function, which relates to the technical field of metering valves and comprises a metering valve body, a mounting block is arranged at the top of the metering valve body, a mounting component is arranged at the top of the mounting block, an electronic actuator is arranged at the top of the mounting component, and the electronic actuator is connected with the metering valve body. The metering valve comprises a metering valve body, connecting pipes are arranged at the two ends of the metering valve body, an impeller is rotationally installed in one connecting pipe, an electromagnetic induction piece is installed in the connecting pipe, and an adjusting assembly is arranged on one side of the connecting pipe. The device solves the problems that an existing common metering valve is inconvenient to adjust the flow according to needs, and the current flow and the current flow velocity cannot be clearly displayed.

The well mouth electromagnetic heating device comprises a shell, the shell is of a hollow structure, an insulating layer is fixedly installed on the inner wall of the shell, a spiral electromagnetic induction coil is fixedly installed on the inner wall of the insulating layer, an inner ring of the electromagnetic induction coil is installed on a heat preservation layer in a winding mode, and a heating tank is fixedly installed on the inner wall of the heat preservation layer. The stirring column and the metal rod rotate along with the rotating rod to stir liquid in the heating tank, so that different parts of the liquid are fully mixed, the metal rod generates induction heat under the action of a magnetic field, the heat can be diffused in the liquid more quickly and uniformly, the phenomenon of temperature stratification is avoided, and the heating uniformity is further improved. Cleaning liquid is injected into the first channel of the rotating rod through the connector, the cleaning liquid is sprayed out of the nozzle through the second channel, the sprayed cleaning liquid comprehensively cleans the interior of the heating tank, meanwhile, the scraping plate can scrape the inner wall of the heating tank in the stirring process, and impurities or precipitates in the liquid are prevented from being attached to the inner wall.

The utility model discloses an electromagnetic induction structure which comprises a magnet assembly and a spiral coil and is characterized in that the magnet assembly is coaxially arranged outside or inside the spiral coil to provide a radial single-polarity magnetic field for the spiral coil, the magnetic induction line of the magnetic field is perpendicular to a coil wire, and the magnet assembly and the spiral coil move relatively. A radial single-pole magnetic ring for radiation magnetization or a common magnet with the same polarity facing the coil and arranged annularly is adopted as a magnet assembly to provide a radial single-polarity magnetic field for the spiral coil, and when the electromagnetic induction structure is applied to a generator, electric energy output is larger than that of a voice coil motor; when being applied to a motor, the motor can do linear / arc / circular motion, and the stroke is longer than that of a voice coil motor while the output power is ensured.

The utility model discloses an electro-thermal conversion device based on electro-magnetic-thermal coupling effect, and relates to the technical field of electro-thermal conversion, the electro-thermal conversion device comprises a support isolation structure, an induction coil and a heated structure, the support isolation structure comprises a base and a support, the support is arranged on the base, and the induction coil is arranged on the support. The induction coil is arranged on the outer side of the support, and the heated structure is arranged on the inner side of the support. According to the electro-thermal conversion device based on the electro-magnetic-thermal coupling effect, efficient electro-thermal conversion of electromagnetic induction and high-temperature radiation coupling is achieved through the induction coil, the energy conversion efficiency is improved, energy consumption is reduced, and the electro-thermal conversion device based on the electro-magnetic-thermal coupling effect is of great significance to energy conservation and emission reduction.

The application belongs to the technical field of control system, and particularly relates to a composite heating method and system for starting and running of a molten salt pipeline, which comprises a resistance electric heat tracing band evenly laid along the outer wall of a pipeline to be heated, and an electromagnetic induction heat tracing device arranged on a set pipe section of the outer wall of the pipeline at a specific interval; when the pipeline is in an empty pipe state, the resistance electric heat tracing band is started, and the whole pipeline is heated to a first preset temperature higher than a solidification point of molten salt according to a pipe wall temperature; when the whole pipeline temperature reaches the first preset temperature and is maintained for a set time, and the temperature field stability condition and the heat preservation duration condition are met, molten salt is injected into the pipeline, then the resistance electric heat tracing band is turned off, and the electromagnetic induction heat tracing device is started; at this time, the molten salt medium temperature at the outlet of the pipeline is taken as a control target, and the temperature of the molten salt in the pipeline is maintained at a higher second preset temperature by independently adjusting the power of each distributed electromagnetic induction heat tracing device. Through coupling of the heating mode and the medium state, a balance is achieved among safety, energy consumption and temperature control.

The invention relates to the technical field of nuclear facility pipeline heating. The invention provides a pipeline heating device and an in-reactor test facility. The pipeline heating device comprises a magnetic conduction layer, a heat conduction layer, a heat preservation layer and an electromagnetic induction coil, the magnetic conduction layer is made of a magnetic alloy material, and the magnetic conduction layer is enclosed and internally forms a heating area used for containing a pipeline; the heat conduction layer is located on the side, facing the heating area, of the magnetic conduction layer and used for transmitting heat of the magnetic conduction layer to the pipeline. The heat preservation layer wraps the side, away from the heating area, of the magnetic conduction layer. The electromagnetic induction coil is wound around the side, away from the heating area, of the heat preservation layer. The magnetic conductive layer made of the magnetic alloy material serves as a main absorption and conversion carrier of magnetic field energy, the eddy current effect can be remarkably enhanced, the problem that the heating efficiency is insufficient due to low magnetic conductivity of the austenitic stainless steel pipeline is solved, and the heating efficiency is greatly improved. The arrangement of the magnetic conductive layer can fundamentally avoid material microscopic damage caused by direct action of a magnetic field, and the safety is higher.

The invention concerns a handheld mobile device for determining a safety hazard due to magnetic fields, in particular a mobile phone, comprising a sensor unit comprising at least one magnetic field sensor and a position sensor; wherein the magnetic field sensor is configured to measure a magnetic field vector of an environment of the handheld mobile device; wherein the position sensor is configured to measure a position information of the handheld mobile device; a processing unit configured to calculate magnetic field data based on the measured magnetic field vector and the position information, wherein the magnetic field data comprises at least one of a strength of a magnetic field, magnet field gradient, a magnetic force, and electromagnetic induction, and determine whether the handheld mobile device is in a range of a magnetic fringe field of a Magnetic Resonance system based on the calculated magnetic field data. The invention further concerns a method for determining a safety hazard due to magnetic fields for a handheld mobile device, in particula2r a mobile phone.

This invention relates to the field of carbon nanotube preparation equipment technology, and particularly to a gas heating device, a fluidized bed reactor, and a method for preparing carbon nanotubes. The gas heating device includes a heating tube through which a carrier gas flows, and a heating component for heating the carrier gas is fitted over the heating tube. This invention provides a fluidized bed reactor with a reasonable overall structure, convenient installation, and good practicality and potential for large-scale promotion. Specifically, this invention uses electromagnetic induction to uniformly heat the entire heating tube, thereby rapidly and stably heating the carrier gas to a set temperature, ensuring a uniform temperature field distribution within the reaction chamber, and effectively improving the consistency of carbon nanotube growth and product quality. Furthermore, by eliminating traditional resistance wire heating, problems such as high-temperature aging and burnout of the resistance wire are avoided. The equipment has no easily damaged parts, resulting in a low failure rate, reduced maintenance costs, and a significantly extended service life.

The utility model relates to spin-coating glue-uniformizing equipment with heating and temperature control functions, which comprises a main machine and an electrical control system, the main machine comprises a shell, a glue-uniformizing cavity is arranged at the upper part of the shell, a vacuum adsorption carrying disc is rotatably arranged in the glue-uniformizing cavity through a main shaft, an electromagnetic induction heating coil is arranged on the shell below the carrying disc, and the electromagnetic induction heating coil is arranged on the shell below the carrying disc. The object carrying disc is heated; an infrared temperature measuring probe is mounted on the shell above the glue uniformizing cavity; and the electromagnetic induction heating coil and the infrared temperature measurement probe are electrically connected with the electrical control system and are controlled by the electrical control system to operate. The vacuum adsorption device is simple in structure and high in reliability, can perform vacuum adsorption on the substrate to ensure high-speed stable rotation of the substrate, and simultaneously heats the substrate and accurately controls the temperature.

The utility model discloses an inductance encoder for a rotating motor, which relates to the technical field of encoders and comprises a signal receiving and demodulating module, the signal receiving and demodulating module comprises a rotor plate, a stator coil plate and a dual-channel induction inductance sensor chip, the rotor plate is connected with a rotating shaft portion of the rotating motor, and the stator coil plate is connected with the inductance sensor chip. The stator coil plate comprises an exciting coil and a receiving coil, non-contact electromagnetic induction is formed among the rotor plate, the exciting coil and the receiving coil, and the inductance sensor chip is used for demodulating amplitude modulation signals on the receiving coil and converting the amplitude modulation signals into sine and cosine signals; the signal processing module is used for receiving the sine and cosine signals output by the inductive sensor chip and processing the sine and cosine signals to obtain signal information; the signal decoding and outputting module is used for receiving the signal information and converting the signal information into angle position information of a motor rotor plate; the inductance encoder has the characteristics of high anti-interference capability, strong environmental adaptability and low cost.

The invention relates to the technical field of power transmission line inspection, and provides inspection equipment, the inspection equipment is installed on a power transmission line, an electromagnetic induction assembly and the power transmission line are in magnetic conduction, the electromagnetic induction assembly generates current by means of the power transmission line in an electromagnetic induction mode, and the current generated by the electromagnetic induction assembly is used for maintaining continuous and stable work of the inspection equipment. Therefore, through the inspection equipment provided by the embodiment of the invention, the problem that the power supply of the inspection equipment is unstable due to meteorological environment factors can be solved, so that the working stability of the inspection equipment is improved.

The utility model relates to the technical field of pipelines, and provides a liquid lead conveying pipe which comprises a pipeline body, a protective shell and an electromagnetic induction coil, the pipeline body is arranged in the protective shell, the two ends of the pipeline body penetrate out of the protective shell, a heat preservation layer is arranged outside the pipeline body, and the electromagnetic induction coil is arranged in the protective shell. And the electromagnetic induction coil is wound on the thermal insulation layer. The pipeline body is heated in an electromagnetic heating mode, accurate control over the heating temperature can be achieved, the liquidity and temperature stability of lead liquid are guaranteed through online heating of the pipeline body, the production efficiency is improved, heat loss can be reduced through the arrangement of the heat preservation layer, and the heating efficiency is improved; and the electromagnetic induction coil and the pipeline body can be protected through the arrangement of the protective shell, and therefore the service life of the electromagnetic induction coil and the service life of the pipeline body can be prolonged.