46 results about "Induction field" patented technology

The invention relates to the technical field of high-precision positioning, in particular to a high-precision six-degree-of-freedom magnetic positioning system and method, and the method comprises the steps: generating a three-dimensional low-frequency magnetic induction field with a preset frequency in a space through a three-axis orthogonal transmitting coil; detecting the three-dimensional low-frequency magnetic induction field through a three-axis orthogonal receiving coil to obtain an induced voltage signal; transmitting the digitized induced voltage signal to a control layer; in the control layer, the position and attitude of the receiver are estimated in real time by using a joint estimation algorithm fusing error state extended Kalman filtering and particle swarm optimization; the error state extended Kalman filtering comprises the steps of constructing a state transition matrix F of a target carrying a receiver, and constructing a process noise covariance matrix Qk and a parameterized measurement noise covariance matrix R of the system through translation acceleration noise sigma a and rotation noise sigma omega. According to the invention, the PSO module is utilized to dynamically and adaptively adjust the key parameters of the ESKF, and high-precision positioning and low-delay response are realized.

The invention discloses an automatic brazing device based on graphite rod indirect heating and a brazing method thereof, and relates to the technical field of precision part welding. The automatic brazing device comprises a high-frequency induction heating system, a graphite rod heating body, a temperature closed-loop control system, an automatic transmission and positioning system and a rapid cooling system; the automatic transmission and positioning system is used for clamping and moving a workpiece, the high-frequency induction heating system and the rapid cooling system are sequentially arranged along the moving path of the workpiece, a graphite rod heating body is arranged in an induction field and is subjected to induction heating, and the temperature closed-loop system monitors the temperature of the graphite rod heating body in real time and feeds back and controls the power of the induction field. And the rapid cooling system is arranged at a downstream station of the high-frequency induction heating system and is used for carrying out forced cooling on the welded workpiece. Rapid local heating, precise temperature control and instant cooling can be achieved, and therefore the elastic performance of a workpiece is effectively protected while the welding quality and efficiency are improved.

The application discloses a kind of ocean stereo magnetic survey system and method based on unmanned platform, belong to marine detection equipment technical field, including water surface magnetic transverse gradient measurement subsystem, underwater magnetic total field measurement subsystem, ground magnetic diurnal variation observation station and data synchronization and compensation processing center.Processing center, built-in improved 18 items Tolles-Lawson magnetic interference compensation model, real-time solution and eliminate platform constant field, induction field and eddy current field interference.The application is realized through the cooperation of combined navigation and automatic roll reduction device, attitude depth adjustment mechanism, water surface / underwater platform high-precision attitude positioning and attitude keeping;After diurnal variation correction, attitude correction and position calculation, water surface transverse magnetic gradient and vertical magnetic gradient are solved, and water surface-underwater stereo magnetic survey cooperative operation and high dynamic platform magnetic interference real-time compensation are realized, which significantly improves the precision, efficiency and spatial resolution of marine magnetic anomaly detection.

Tabletop device (106) for an induction device (100), wherein the tabletop device (106) is a A support surface (112) for placing a cooking vessel (110) on the countertop device (106), at least one induction coil (200, 202) shaped to provide an output magnetic field for heating the support surface (112) using an input magnetic field of an induction field of the induction device (100), and a sensor device (114) with at least one force sensor for detecting a pressure acting on the countertop device (106), wherein the sensor device (114) is configured to provide a pressure signal representing the pressure.

Techniques for reel-to-reel assessment of a high-temperature superconducting (HTS) tape are provided. The techniques include a cryocooler-powered cryogenic system configured to cool the HTS tape in a background magnetic field. The cryocooler-powered cryogenic system may be free of liquid cryogenic. The cryocooler-powered cryogenic system may include a measurement zone, where the magnetic field is perpendicular to the path of the HTS tape. The techniques may also include a Hall sensor array within the measurement zone. The Hall sensor array may be configured to scan a magnetic field at a surface of the HTS tape to measure a screening-current-induced field and separate it from the background magnetic field. The techniques may also include a data acquisition (DAQ) module operably coupled to the Hall sensor array. The DAQ module may be configured to oversample Hall voltages.

An electrostatic spray nozzle assembly is described that includes an induction ring and a fluid tip. The induction ring generates an electrical field for inducing an electrical charge on droplets of a feedstock liquid from the fluid tip that pass through an opening of the induction ring. The induction ring is electrically coupled to an electrical induction field source via a first conductive path comprising at least an electrically conductive pliable structure, such as a stainless steel spring. Feedstock flowing through the fluid tip is electrically coupled to a charge carrier source via a second conductive path provided by at least a conductive surface of a fluid tube coupled to the fluid tip. The first conductive path and the second conductive path are electrically isolated by an insulating barrier.

The invention relates to a trivet (106) for a cooking vessel (110), wherein the trivet (106) has a support section (112) for supporting the cooking vessel (110), a plurality of holding elements (114) for holding the cooking vessel (110) on the support section (112) and a transmission unit (116) which is shaped to generate an output magnetic field for heating the cooking vessel (110) using an input magnetic field of an induction field.

An electrostatic spray nozzle assembly is described that includes an induction ring and a fluid tip. The induction ring generates an electrical field for inducing an electrical charge on droplets of a feedstock liquid from the fluid tip that pass through an opening of the induction ring. The induction ring is electrically coupled to an electrical induction field source via a first conductive path comprising at least an electrically conductive pliable structure, such as a stainless steel spring. Feedstock flowing through the fluid tip is electrically coupled to a charge carrier source via a second conductive path provided by at least a conductive surface of a fluid tube coupled to the fluid tip. The first conductive path and the second conductive path are electrically isolated by an insulating barrier.

The invention provides an unmanned aerial vehicle course deviation induction method and system based on inertial navigation signal simulation, and relates to the technical field of unmanned aerial vehicle course deviation induction. Background radio frequency signals around a flight path of an unmanned aerial vehicle are collected, and inertial navigation position data are combined to construct a reference environment map; then deploying a directional radio frequency beacon array on the side of the air route, generating a composite induction field with gradually increased intensity through cooperative control, and constructing a virtual navigation beacon in a field intensity peak region; monitoring the received signal strength of the unmanned aerial vehicle in real time, comparing the received signal strength with a reference map to identify abnormal enhancement, and resolving a virtual deflection instruction; the instruction is fused with the flight attitude, and the virtual beacon is mapped into a temporary waypoint through coordinate transformation; and finally, injecting the waypoint as a high-priority task into a flight control system to induce the unmanned aerial vehicle to deviate from the original route, so that the accuracy and the concealment of course induction of the unmanned aerial vehicle can be improved.

A device (4) for continuously magnetically detecting a defect in a moving metal reinforcing element (1) is proposed. The device comprises: - first magnetising means (5) configured to generate a continuous first magnetic induction field so as to magnetise the moving reinforcing element (1), - detecting means (6) configured to detect at least one magnetic-flux variation generated by the occurrence of a defect in the moving reinforcing element (1) and deliver a raw signal representative of the magnetic-flux variation, and - comparing means (13) configured to compare a detection signal with a predetermined detection threshold representative of a defect, the detection signal being determined based on the raw signal, and determine the presence of at least one defect of the reinforcing element (13) based on the result of the comparison.

The application discloses a membrane pollution trend identification and pre-maintenance method, and belongs to the technical field of water treatment. The method comprises the following steps: injecting a functionalized tracer into water flowing into a membrane system; applying a non-contact external induction field to stimulate a complex formed by the tracer and pollutants; detecting a characteristic induction signal; analyzing a pollution enrichment characteristic parameter; calculating a dynamic enrichment trend index; and triggering a pre-maintenance operation according to the index breaking through a threshold. The functionalized tracer is combined with the non-contact external induction field to stimulate the complex, and the characteristic induction signal of the complex is detected. The pollution enrichment characteristic parameter is analyzed from the signal, the dynamic enrichment trend index is calculated, and the pre-maintenance operation is triggered according to the index. Early warning, targeted identification and predictive maintenance of membrane pollution can be realized.

The present invention discloses a ready-to-use hydrogel resonance detection device and method for protein markers. The device includes: a stepwise reaction module including a first base, a cover plate, and a plurality of flow channel units, and the flow channel units are separated into a plurality of cells by a separation unit; a hydrogel incubation module including an incubation reaction pool, a plurality of mold racks, and a plurality of conversion units, and the conversion units are arranged above the mold racks and are used to introduce the sample to be tested into the corresponding mold racks; a detection module is used to form an induction field with the crack resonance ring of the corresponding mold rack for detection. The detection method is to sequentially load the first reagent, the second reagent, the third reagent, and the fourth reagent into the cells of the corresponding flow channel unit, and when different separation units are rotated, different reagents are mixed for stepwise reaction and then detected by the detection module. The present invention realizes portable and rapid quantitative detection of protein markers in the sample to be tested, and has the advantages of simple and rapid operation, high sensitivity, and simultaneous reading of multi-target results.

A device (4) for the continuous magnetic detection of a defect in a moving metallic reinforcement element (1) is proposed. The device comprises: - first magnetization means (5) configured to generate a first continuous magnetic induction field so as to magnetize the moving reinforcement element (1), - detection means (6) configured to detect at least one change in magnetic flux generated by the occurrence of a defect in the moving reinforcement element (1) and to deliver a raw signal representative of the change in magnetic flux, and - comparison means (13) configured to compare a detection signal to a predetermined detection threshold representative of a defect, the detection signal being determined from the raw signal, and to determine the presence of at least one defect in the reinforcement element (13) from the result of the comparison. Figure for the abstract: Fig 3

The invention provides a foundation pit leakage detection device and a leakage judgment and positioning method. The leakage detection device comprises a magnetic excitation well, a magnetic excitation system, magnetic field measurement cloth, a simulated electromagnetic field data processing system and a control analysis system. The magnetic excitation system applies excitation current in the magnetic excitation well; the control analysis system carries out comparative analysis on a measurement result and a simulation result of the magnetic field, and if 90% or more data errors are smaller than 0.05, leakage is judged to be generated; the magnetic excitation system further comprises an electrode, and when leakage is judged through the judgment method, the diaphragm wall seam position corresponding to the depth where the electrode is located is the leakage position. Based on the current magnetic field effect, an original precipitation well is utilized, a large-range magnetic induction field is established, the leakage point position at the joint of the underground diaphragm wall is rapidly found, traditional salvage needle type low-efficiency detection is avoided, and in addition, the detection system can be moved.

The present application relates to the field of nanomaterials, and provides a kind of based on the manipulation method of star chain induction nanorobot cluster, comprising: step S1: pre-configure the composite induction field of nanorobot cluster control;Wherein, composite induction field is driven nanorobot cluster assembly into star chain structure by coarse-grained model and active particle environment;Step S2: according to star chain structure, determine the kinetic parameter of nanorobot cluster;Step S3: according to kinetic parameter, when receiving control instruction, generate the control parameter of active particle in composite induction field;Step S4: according to control parameter, control star chain structure executes the target operation corresponding to operation instruction, and after completing target operation, revoke composite induction field.

A module (110) for an induction device (101) comprises a functional element (114) for providing functionality of the module (110), a receiving coil (116) shaped to provide electrical energy for operating the functional element (114) using an input magnetic field of an induction field (104) of the induction device (101), and a coupling element (118) for mechanically coupling the module (110) with another module (112).

The invention relates to the field of nanometer materials, and provides a nanometer robot cluster control method based on an induction star chain, which comprises the following steps: S1, pre-configuring a composite induction field controlled by a nanometer robot cluster; wherein the composite induction field drives the nano-robot cluster to be assembled into a star chain structure through a coarse-grained model and an active particle environment; s2, according to the star chain structure, kinetic parameters of the nano-robot cluster are determined; s3, according to the kinetic parameters, when a control instruction is received, regulation and control parameters of active particles in the composite induction field are generated; and S4, according to the regulation and control parameters, controlling the star chain structure to execute a target operation corresponding to the operation instruction, and after the target operation is completed, cancelling the composite induction field.

A rotating electric machine includes a stator having a stator coil and a rotor having a rotor core and a field coil. The rotating electric machine is configured to have harmonic current flowing through the stator coil to induce field current in the field coil. The rotor further has a circuit module provided around a rotating shaft and connected with the field coil to form a resonant circuit together with the field coil, and a coil end cover covering a coil end part of the field coil which is located axially outside the rotor core. Moreover, the coil end cover is a balance adjustment member that adjusts weight balance of the rotor in the circumferential direction; and at least part of the coil end cover in the circumferential direction constitutes an adjustment portion where weight of the coil end cover has been reduced or increased.

The apparatus and associated method relate to a motor driver module package (MDP) for efficient control of an N-phase motor system. In one illustrative example, the MDP may include N power transistors, a microcontroller unit (MCU), and a sense circuit. For example, the MDP may be a single module package. The sensing circuit may include N inductive field effect transistors (SENSEFETs). Each SENSEFET is coupled to one of the N power transistors and is configured to generate a response corresponding to a drain output of the corresponding power transistor. In some embodiments, in a high frequency mode, the MCU may generate N high frequency injection waveforms to each N power transistor. For example, the MCU may generate N high frequency injection waveforms according to the response of each N-phase. Various embodiments may advantageously provide an efficient solution for motor control applications.

The present invention relates to an electromagnetic induction continuous fluid heating device (2), and more particularly to an automatic beverage vending machine (1). The heating device (2) comprises: a tubular body (8) having a longitudinal axis (A), the tubular body (8) including at least one inlet (10) configured to receive the fluid to be heated and supply it into the interior of the tubular body (8), and an outlet (11) from which the heated fluid flows out of the tubular body (8) when in use; and an electric winding (12) wound around the tubular body (8) and electrically powered to generate an electromagnetic induction field. The tubular body (8) is made of an electrically conductive material to be heated by electromagnetic induction due to the effect of the electromagnetic induction field. The heating device (2) further comprises inserts (18, 118, 218, 318, 418, 518, 618) which engage axially with the tubular body (8) and extend along the longitudinal axis (A). The heating device further comprises flow channel channels (19, 119, 219, 319, 419, 519, 619) for the fluid, which fluidly connect the inlet (10) to the outlet (11) and are partitioned by the outer side surface (18a) of the insert (18) and the inner side surface (8a) of the tubular body (8). The flow channel channels (19, 119, 219, 319, 419, 519, 619) extend around the longitudinal axis (A), and at least a portion of them extend along a zigzag pattern or a zigzag trajectory from the inlet (10) to the outlet (11).

An electrostatic spray nozzle assembly is described that includes an induction ring and a fluid tip. The induction ring generates an electrical field for inducing an electrical charge on droplets of a feedstock liquid from the fluid tip that pass through an opening of the induction ring. The induction ring is electrically coupled to an electrical induction field source via a first conductive path provided by conductive surfaces of: a nozzle head holding the induction ring, and a purge gas tube holding the nozzle head. Feedstock flowing through the fluid tip is electrically coupled to a charge carrier source via a second conductive path provided by at least a conductive surface of a fluid tube coupled to the fluid tip. The first conductive path and the second conductive path are electrically isolated by an insulating barrier.

The utility model relates to a mistaken touch prevention automobile door outer handle based on arrayed electrodes and an automobile. The mistaken touch prevention automobile door outer handle comprises a capacitance digital conversion circuit, a processor and a sensing unit. The sensing unit is at least provided with a main electrode, at least one auxiliary electrode is arranged on each of the two sides of the main electrode, the outer surface, away from the vehicle body direction, of the handle serves as a sensing area, and the main electrode and the auxiliary electrodes form at least three arranged self-capacitance induction electric fields used for sensing that an external object approaches and / or makes contact with the sensing area. A guide mark is arranged on the outer surface of the handle on the sensing area and corresponds to the position of the main electrode; the capacitance-to-digital conversion circuit is respectively coupled with each electrode; the processor capacitively couples the digital conversion circuit. According to the utility model, through the arrangement form of at least three self-capacitance electrodes, the problem of mistaken touch of a capacitance detection type automobile door outer handle is solved.

The present invention discloses a liquid storage device and a cleaning device. The liquid storage device includes a liquid storage structure for storing liquid; a liquid inlet structure through which liquid can flow into the liquid storage structure; a barrier structure, an induction field generating component for generating an induction field, an induction component, and an electronic control unit. Among them, the barrier structure is disposed within the liquid storage structure, the induction component can sense the induction field, the barrier structure can float under the buoyancy of the liquid, the barrier structure can block the induction of the induction field by the induction component when floating to a first liquid level, and the electronic control unit is configured to control the liquid inlet structure to stop inputting liquid into the liquid storage structure when the barrier structure blocks the induction of the induction field by the induction component. This liquid storage device can stop the liquid from entering the liquid storage device when the liquid storage device collects liquid up to a preset liquid level, avoiding the phenomenon of overflow of the liquid storage device and resulting in accidents.

The application discloses a wireless charging control method and system based on NFC, relates to the technical field of wireless power transmission, and comprises the following steps: S100, before starting the wireless charging device, a dynamic analysis baseline of a multi-source near field communication induction spectrum is constructed, a continuous time domain signal and a frequency domain signal are used to reconstruct an energy flow trajectory, coupled paths, phase shifts and amplitude abnormal data generated in an induction field are extracted, and a holographic reference data surface is generated; S200, based on the holographic reference data surface, interference signal attribution recognition processing is performed, a differential decoupling method is applied to separate feedback signals and interference components, signal consistency weights are calculated according to time sequence continuity, and a misjudgment matrix is generated. The application constructs a holographic reference data surface, introduces a misjudgment matrix and an identity lock frequency mechanism, accurately identifies effective signals, combines counterfactual playback and topology reconstruction, realizes dynamic self-adjustment of a controller, improves anti-interference and charging stability, and guarantees the safe and intelligent operation of multi-device wireless charging.

A sealing apparatus 10 for sealing an open top 12 of a container 14. The sealing apparatus 10 comprises a linearly displaceable transfer member 16 which is linearly displaceable from a retracted position to an extended position to transfer a sealing material 18 to an open top 12 of a container 14 to be sealed. The sealing apparatus further comprises an induction coil 20, producing an induction field for heating the sealing material 18 by induction heating to enable the sealing material to be sealed to the open top 12 of the container 14. The sealing apparatus further comprises an atmosphere controller 22. The atmosphere controller forms a controlled atmosphere environment in a headspace 50 of the container before the sealing material is sealed to the open top of the container. The atmosphere controller may comprise a gas supplier 24 and may also comprise a vacuum generator 26. The sealing apparatus may comprise an oxygen sensor for measuring the proportion of oxygen in the headspace.

The invention relates to the technical field of inlaying preparation of mother-of-pearl inlay, and discloses a mother-of-pearl inlaying efficient forming process suitable for a complex curved surface, which comprises the following steps of: obtaining a three-dimensional digital model of a complex curved surface base material and an inlaying pattern of the mother-of-pearl inlay, and generating three-dimensional printing path data; the path data defines a movement track, local layer thickness, a spraying angle and a printing speed of the printing head in a three-dimensional space, and external induction field parameters and in-situ curing parameters of the mother-of-pearl inlay particles are preset; and preparing mother-of-pearl inlay particles with an average particle size of 1-50 microns. A precise three-dimensional model and a printing path of a base material are obtained through high-precision three-dimensional digitization and pattern design, a real-time deformation sensing and path compensation mechanism in intelligent self-adaptive three-dimensional printing and in-situ directional curing is combined, a closed-loop control system can dynamically correct the spraying path of a robot, it is ensured that a mother-of-pearl inlay layer is perfectly attached to the surface of the base material, and the spraying quality of the robot is improved. Therefore, high-precision forming of the mother-of-pearl inlay pattern on any complex curved surface is achieved.

The device (4) for the continuous magnetic detection of at least one defect in a moving metallic reinforcement element (1) comprises a first and a second magnetization coil (5, 6) and a detection coil (7) which together define an internal passage (9) with longitudinal axis (X-X'). The first magnetization coil (5) is configured to generate a first continuous magnetic induction field directed towards the detection coil (7), the second magnetization coil (6) being configured to generate a second continuous magnetic induction field directed towards the detection coil (7). The detection coil (7) is configured to detect a change in magnetic flux generated by the occurrence of a defect in the metallic reinforcement element (1) moving longitudinally in the internal passage (9), the defect in the metallic reinforcement element being detected from the change in magnetic flux. Figure for the abstract: Fig 3

The invention relates to an operating device (110) for a household appliance (130) that can be operated using an induction field (115). The operating device (110) comprises a configurable control element (120) and a control knob box (125). The control element (120) is configured to provide, in response to an identification signal (135) indicating that the household appliance (130) is coupled with the induction field (115), a setting option adapted to the household appliance (130) for adjusting different operating parameters of the household appliance (130) by a user through different actuations of the control element (120). The control knob box (125) is coupled to the control element (120) and configured to detect an actuation of the control element (120) and to output a control signal (140) for operating the household appliance (130) with one of the operating parameters assigned to the actuation.

An apparatus is disclosed for inducing magnetism in a flowstream of at least partially magnetisable, dry particulate feed material, in order to effect a subsequent particle classification. The dry separation stage is located proximal to the magnetic induction apparatus, in the form of a treatment chamber 10 with a plurality of spaced-apart magnets 16, 18 located adjacent to, and moveably displaceable along the length of both an upper and a lower side region of the treatment chamber 10, to generate a localised magnetic induction field zone. Conveyer belts 22, 24 carrying the dry particles move across each of the outer faces of the magnets 16, 18 on both sides of the chamber 10, but at differential relative velocities to each other, creating a region of air-particle fluidisation and agitation within the treatment chamber 10 and then a physical separation of the particulate feed material can occur based upon their susceptibility to magnetic induction.