238 results about "Planar coil" patented technology

The invention provides a multi-objective optimization method for non-planar coils of a star simulator and a star simulator magnet. The optimization method comprises the following steps: obtaining initial structures of a plurality of non-planar superconducting coils according to magnetic field configuration data of target plasma; according to the target magnetic field parameter, the engineering constraint parameter and the material constraint parameter of the configuration data, an objective function is constructed, the engineering constraint parameter comprises the engineering limit geometric parameter of the non-planar superconducting coil, and the material constraint parameter comprises the limit current carrying of the non-planar superconducting coil material; carrying out minimization solution on the target function to obtain optimized coil data; and performing materialization processing on the plurality of non-planar superconducting coils according to the optimized coil data to obtain a plurality of optimized non-planar superconducting coil models. According to the optimization method, a magnetic field matching-engineering feasibility-material safety three-dimensional constraint system is constructed, and the problem that the engineering cannot be realized on the ground is avoided.

The embodiment of the invention provides a microresonator and a preparation method of the microresonator, the microresonator can be obtained by connecting an MIM plate capacitor and an inductor of a planar coil structure, and an upper electrode, a lower electrode and the inductor of the MIM plate capacitor and a microstrip line connecting the capacitor and the inductor are all prepared from superconducting materials. A dielectric layer of the MIM plate capacitor can be prepared by adopting an ALD technology, a dielectric film grown by adopting the ALD technology is very compact and has very good thickness uniformity, a relatively high dielectric constant can be realized, and the quality factor of the microresonator can be remarkably improved by combining the zero resistance characteristic of a superconducting material; and the miniaturization of the microresonator can be realized. Moreover, in the preparation process, the three layers of thin films for forming the capacitor and the inductor are formed through deposition firstly, and then the three layers of thin films are patterned layer by layer, so that introduction of excessive impurities can be avoided, interlayer contact can be optimized, and the risk of electric leakage can be reduced.

The invention provides an MCR-WPT system planar coil structure parameter optimization method based on an improved four-vector optimization algorithm. Analyzing an S-S topology compensation structure network, and deducing the energy transmission efficiency of the MCR-WPT system; analyzing the influence of the physical structure of the coil on the characteristic parameters of the coil, and calculating the self-inductance value of the coil; calculating a mutual inductance coefficient value between the coupling coils; calculating alternating current resistance; calculating a coupling coefficient between coupling coils, and analyzing frequency splitting to establish constraint conditions; determining an optimization variable, and taking the energy transmission efficiency as a target function value and an optimization target; setting a constraint condition according to the critical coupling coefficient, and adjusting a parameter range according to the constraint condition; and optimizing the energy transmission efficiency, namely a target function, by adopting an improved four-vector optimization algorithm according to coil setting parameters.

The invention relates to the technical field of microelectronics, and discloses a processing method of a passive chip for magnetic field energy collection, which comprises the following steps: S1, providing a chip with a flexible substrate, and depositing a first dielectric layer on the surface of the substrate to isolate the substrate from a coil; s2, forming a three-dimensional spiral coil structure on the dielectric layer by adopting a three-dimensional micro-nano processing technology, wherein the coils are stacked layer by layer in an asymmetric spiral form along a direction perpendicular to the substrate; and S3, in the forming process of the coil, a multi-wire-harness cross arrangement design is used, so that the inductance increment of a unit area is maximized. Through the design of the three-dimensional spiral coils and the asymmetric coils, the limitation of a traditional planar coil structure on magnetic field coupling and induction efficiency is broken through, the three-dimensional spiral coils are arranged in a multi-layer mode in the vertical direction, magnetic flux coupling between the coils is tighter, and the inductance value and the induced electromotive force are remarkably improved.

The present disclosure is directed to stellarators or assemblies including a stellarator including removable and / or replaceable components, such as removable field shaping units and / or removable shaping coils. In some embodiments, the stellarators of the present disclosure include a toroidal sector, which includes one or more removable field shaping units.

The invention discloses a planar two-dimensional micro-displacement sensor based on a four-quadrant eddy current effect, which comprises a detection coil array plate and a target conductor array plate which are parallel up and down, and is characterized in that the detection coil array plate is provided with four planar coils arranged in a shape like a Chinese character'tian 'on an insulating substrate; the target conductor array plate is provided with four metal panels which are arranged in a shape like a Chinese character'tian 'on an insulating substrate. According to the invention, identical excitation signals are introduced into four planar coils on a detection coil array plate, two-dimensional micro-displacement of the detection coil array plate relative to a target conductor array plate is converted into voltage signals of the four planar coils by using an inductance measurement circuit, and the four voltage signals are processed by using a microprocessor system; therefore, the two-dimensional plane relative displacement of the detection coil array plate and the target conductor array plate is obtained. The device is simple in structure, high in measurement precision and suitable for scenes requiring precise measurement of planar two-dimensional micro-displacement in severe environments such as dust and greasy dirt.

The invention discloses a multi-source driving radio frequency ion source for improving plasma distribution uniformity, and belongs to the technical field of plasma generation devices. Comprising an ion diffusion cavity and a plurality of ion sources communicated with the ion diffusion cavity, cylindrical coils are wound around the peripheries of the ion sources, and planar coils are arranged between the adjacent ion sources and located on the outer top wall of the diffusion cavity. The device has the beneficial effects that the design of the auxiliary planar coil is added, active modulation of plasma uniformity is carried out by adjusting the driving current passing through the planar coil, and the distribution uniformity of plasmas in the diffusion cavity is optimized.

A sensor element for checking the authenticity of a planar data carrier, in particular a banknote, has a spin resonance feature. The sensor element contains a magnetic core having an air gap, into which the planar data carrier can be inserted for authentication and which defines an axial direction extending between the adjoining surfaces of the magnetic core, a polarization device for generating a static magnetic flux in the air gap, a modulation device for generating a time-varying magnetic modulation field in the air gap, and a resonator for exciting the spin resonance feature of the data carrier to be checked. The modulation device is formed by at least one planar coil arranged in the air gap, which planar coil has one or more turns about the axial direction of the air gap in one plane. The disclosure also relates to a checking device having such a sensor element.

A device component has a magnetorheological brake device with a static holder and with two brake components. A first brake component is rotationally fixedly to the holder and extends in an axial direction. A second brake component has a hollow, rotary part which is rotatable about the first brake component. An encircling gap between the first and second brake components is filled with a magnetorheological medium. The first brake component has a core of magnetically conductive material which extends in the axial direction. An electrical coil is wound axially around the core and spans a coil plane. A magnetic field of the coil extends transversely through the first brake component. A maximum outer diameter of the electrical coil in a radial direction within the coil plane is greater than a minimum outer diameter of the core in a radial direction transversely to the coil plane.

A measuring system for characterizing a multilayered structure with layer-by-layer different ohmic properties, having a sensor module, an electrical switching device, and a measuring electronics unit. The sensor module has more than two planar coils arranged in a stack, and the electrical switching device is contacted with the planar coils and is configured to connect these coils to the measuring electronics unit such that the coils are switchable between a measuring configuration and a reference configuration. In the measuring configuration, the planar coils at least partially form an optionally inductive or capacitive measuring sensor, with the detection area extending outside the sensor module for determining a property of a low and / or high-resistance layer of the structure. In the reference configuration, the planar coils at least partially form an optionally inductive or capacitive reference sensor, with the detection area extending essentially inside the sensor module for determining a sensor module property.

The invention discloses a miniaturized monolithic integration method of a geomagnetic sensor and an MCU (Microprogrammed Control Unit). The method comprises the following steps of (1) low-temperature CMOS circuit layer preparation, (2) TSV three-dimensional interconnection structure processing, (3) magnetic-core-free planar coil manufacturing, (4) low-temperature electromagnetic shielding layer integration and (5) structure release and vacuum packaging. Process conflicts and hysteresis errors introduced by ferromagnetic materials are eliminated through a non-magnetic-core design, a TSV (through silicon via) three-dimensional interconnection technology is adopted to replace traditional plane wiring, the size of the module is compressed to the millimeter level, meanwhile, a broadband electromagnetic shielding layer is integrated, and it is ensured that in a weak magnetic field (lt; and the signal-to-noise ratio in a detection scene is greater than or equal to 30dB. The low-temperature compatibility with a CMOS (complementary metal oxide semiconductor) process can be realized, the mass production feasibility needs to adapt to a standard semiconductor production line, the cost of a single chip is reduced by more than 30%, and the method is suitable for navigation equipment, consumer electronics and industrial sensing systems.

The invention relates to the technical field of electromagnetic coils, in particular to a Halbach array planar coil structure unit. The Halbach array planar coil structure unit is composed of a first substructure, a second substructure and a third substructure. According to the invention, a planar electromagnetic coil is adopted to form a Halbach array permanent magnetic field effect; the invention discloses a Halbach array permanent magnet structure, and aims to solve the problems that the existing Halbach array permanent magnet structure is difficult to miniaturize and rigid, cannot get rid of the limitation of permanent magnet materials, is difficult to realize a sine distribution magnetic field in a real sense and is low in electromagnetic utilization rate.

The invention provides an MCR-WPT system tiny planar coil structure parameter optimization method based on a spot turner optimization algorithm, and the method comprises the steps: deducing an MCR-WPT system energy transmission efficiency form through analyzing a compensation structure network; analyzing physical structure parameters in the tiny planar coil, and calculating self-inductance, mutual inductance and alternating-current resistance; calculating a theoretical self-inductance value of the micro planar coil; calculating a mutual inductance coefficient value between the coupling coils; a Litz wire is adopted to wind a coupling coil; calculating the alternating current resistance of the Litz wire under the high-frequency alternating current; the coils of the transmitting end and the receiving end have the same specification and parameter; establishing a coupling coil structure optimization model; setting upper and lower boundaries of parameter variables; adding constraint conditions; taking the energy transmission efficiency as an optimization target of the target function; and carrying out optimization calculation on the coupling coil structure optimization model by using a kirschner optimization algorithm. The method is shorter in average operation time and higher in operation speed.

Disclosed herein is a stellarator comprising two sets of coils, namely a set of encircling coils which encircle the plasma axis, and a set of shaping coils which do not encircle any other coil or the plasma. In some embodiments, the encircling coils include a structural element to maintain their shape under magnetic forces. In some embodiments, the shaping coils are mounted onto one or more structural elements which, together with the shaping coils, constitute a field shaping unit. Also disclosed is a controller which may modify the electrical current flowing in one or more subsets of the coils in order to achieve target plasma parameters. Also disclosed is a method of designing a set of shaping coils by discretizing a surface dipole or current potential distribution.

This application discloses a torque detection device, comprising: a strain gauge for deforming under torque; a first strain gauge fixed on the strain gauge, the permeability of which varies with the strain applied to it; a circuit board having at least one first planar coil and the same number of second planar coils as the first planar coil; a second strain gauge disposed on the side of the circuit board away from the first strain gauge, and having the same structure and material as the first strain gauge; and a dielectric layer disposed between the circuit board and the second strain gauge; wherein the first planar coil is disposed opposite to the first strain gauge; the second planar coil is disposed opposite to the second strain gauge; and the thickness and dielectric constant of the dielectric layer are set such that the inductance parameter of the second planar coil responds to temperature changes in a manner that matches the inductance parameter of the first planar coil responds to temperature changes.

The utility model relates to an NFC antenna, which comprises a framework, an antenna coil and a pin assembly, the pin assembly is arranged on the framework, a first pin and a second pin of the pin assembly are arranged at a first end of the framework at intervals, and the antenna coil is wound in a first winding groove on the framework. The two ends of the antenna coil are connected with the first pin and the second pin respectively, the framework can play a supporting role, a framework three-dimensional structure is adopted to replace a planar coil type structure, the NFC antenna can be conveniently assembled on a circuit board, and the assembly efficiency is high.

The invention relates to the technical field of electroacoustics, in particular to a precisely-positioned strong magnetic array and a precisely-positioned self-locking ultrathin planar horn. The precise positioning strong magnetic array comprises a back plate made of a metal sheet, one face of the back plate is defined as a working face, the precise positioning strong magnetic array further comprises a magnet array fixed to the working face, and the magnet array comprises a circular magnet and a plurality of annular magnets concentrically aligned to the circular magnet; a plurality of positioning convex blocks are integrally formed on the working face of the back plate through insert injection molding, and the circular magnet and the annular magnet are clamped and fixed in the mode that at least two positioning convex blocks are matched in groups. The precise-positioning self-locking ultrathin planar loudspeaker adopts the precise-positioning strong magnetic array, and the strong magnetic array unit is coaxially arranged in the loudspeaker support and used for providing Lorentz force for the planar coil in the vibrating diaphragm unit. According to the invention, breakthrough light and thin design is realized through the redefined strong magnetic array unit, and meanwhile, the installation difficulty is reduced through the flexible circuit board.

The invention provides a sensing system integrating torque detection and angle detection, and the system comprises a strain body which is used for generating deformation when bearing a torque; the strain gauge is fixed on the strain body, the strain gauge is made of an inverse magnetostrictive material, the magnetic conductivity of the strain gauge changes along with the strain borne by the strain gauge, and the strain gauge is provided with a preset patterned structure; the angle coding structure is arranged on the strain body; the circuit board is provided with at least one planar coil and an angle sensing assembly; wherein the planar coil corresponds to the patterned structure in space and is used for detecting the magnetic conductivity change of the strain gauge so as to obtain torque information; the angle sensing assembly corresponds to the angle coding structure in space and is used for acquiring angle information of the strain body.

The utility model provides a three-dimensional coil and planar coil combined wireless charging system, which relates to the technical field of wireless charging and comprises a transmitting end and a receiving end. The transmitting end comprises a direct-current power supply, an inverter circuit, a transmitting end compensation circuit and a transmitting coil; the receiving end comprises a receiving coil, a receiving end compensation circuit and a rectification filter circuit. Wherein the transmitting coil comprises a manganese zinc ferrite magnetic core and a three-dimensional coil, and the three-dimensional coil is spirally and densely wound on the outer side of the manganese zinc ferrite magnetic core; the receiving coil comprises a planar coil and manganese zinc ferrite flat magnetic bars, the planar coil is wound into a circular ring shape, the manganese zinc ferrite flat magnetic bars are alternately arranged on the circular ring-shaped planar coil along the normal direction and the tangential direction, and the difference between two adjacent normal manganese zinc ferrite flat magnetic bars is 60 degrees; the difference between two adjacent tangential manganese zinc ferrite flat magnetic bars is 60 degrees, and the difference between the adjacent normal manganese zinc ferrite flat magnetic bar and tangential manganese zinc ferrite flat magnetic bar is 30 degrees.

The application discloses a planar electromagnetic energy collection device, and belongs to the field of vibration energy collection.The device comprises a planar spring, a cylindrical permanent magnet, a planar coil, a filling type three-dimensional winding and a fixing structure.The planar electromagnetic energy collection device adopts a composite coil of a non-uniform distribution coil and a filling type three-dimensional coil on the basis of a traditional collector, improves the space utilization of the device and the power density of the device.The non-uniform distribution coil uses a non-uniform distribution method on the basis of a traditional planar coil, and improves the energy conversion rate of the planar coil.The filling type three-dimensional coil combines a three-dimensional coil and a baffle, effectively reduces the volume proportion of the mechanical structure of the device.The planar spring-vibration pickup system of the application suppresses the torsional vibration of the system and improves the vibration stability of the device.

The application belongs to the technical field of axial flux motors, and particularly relates to a coreless PCB stator winding for an axial flux motor, a stator assembly and an axial flux motor, wherein the coreless PCB stator winding comprises at least one winding unit, the winding unit comprises a first annular substrate and a second annular substrate, and the front surface and the back surface of the two annular substrates jointly form four conductor layers, each conductor layer has conductor wires constituting a planar coil in a corresponding sector; the planar coil comprises a conductor action edge and a conductor connection edge, and the planar coils in different conductor layers are staggered and arranged in a mirror image, staggered and filled with a complementary position; the conductor action edge in the third conductor layer is located in a gap region between the front two planar coils; the application can improve the conductor utilization rate in the effective magnetic flux cutting region, and improve the interlayer conduction and current distribution performance of the multi-layer winding.

The utility model discloses a three-dimensional coil structure which is applied to a multi-layer circuit board and comprises a three-dimensional coil unit, the three-dimensional coil unit is arranged on the side edge of a target device on the circuit board in a surrounding mode, the three-dimensional coil unit comprises horizontal wiring units and vertical through hole units, the horizontal wiring units are arranged on the top layer and the bottom layer of the circuit board, and the vertical through hole units are arranged on the top layer and the bottom layer of the circuit board. The horizontal wiring unit is used for forming a horizontal edge of the three-dimensional coil, and the vertical through hole unit penetrates through the circuit board, is connected with the horizontal wiring unit and is used for forming a vertical edge of the three-dimensional coil. The three-dimensional coil unit is arranged around the side edge of the target device, and the horizontal wiring unit and the vertical through hole unit are combined to form the three-dimensional coil structure, so that the coverage area of a magnetic field in the side edge area of the device is enlarged, and the limitation of a traditional planar coil structure is made up; the three-dimensional coil unit can form a complete magnetic field and a good filtering effect on the side edge of the device, and a planar coil magnetic field structure does not need to be reinforced by additionally adding components and a complex circuit structure.

The present invention discloses a head-mounted flat-panel headset with a vibration-optimized flat-panel sound-emitting unit, comprising: earmuffs including an outer shell and a flat-panel sound-emitting unit mounted in the outer shell; a headband having elasticity, with two earmuffs mounted on both ends of the headband respectively; a telescopic structure having one end connected to the headband and the other end connected to the earmuffs, and the telescopic structure is capable of adjusting the relative position of the earmuffs and the headband; the flat-panel sound-emitting unit comprises a planar diaphragm and an upper shell and a lower shell arranged in parallel on two side surfaces of the planar diaphragm, a plurality of permanent magnets being provided on the lower side surface of the upper shell, and a plurality of permanent magnets being provided on the upper side surface of the lower shell; a planar coil having an "S"-shaped pattern is formed on the upper and lower side surfaces of the planar diaphragm; an upper acoustic resistance plate is fittedly mounted along each magnetic pole surface of the permanent magnet on the lower side surface of the upper shell, and a lower acoustic resistance plate is fittedly mounted along each magnetic pole surface of the permanent magnet on the upper side surface of the lower shell; and the acoustic resistance plate is made of a metal sheet with a thickness of 0.1-0.2 mm.

The present invention provides a multi-transmitter-coil one-to-many charging system for wireless charging power supply, belonging to the technical field of wireless power transmission, which includes a wireless transmitting end and a wireless receiving end coupled to the wireless transmitting end. This one-to-many charging system simultaneously performs wireless charging power supply to all devices placed within the space of the transmitting end, and has good charging efficiency. The shape of the transmitting end is a three-dimensional form such as a cuboid, a cube, a cylinder, etc., and the shape of the receiving end is an electrical device with a three-dimensional shape made of metal or plastic. Compared with the traditional wireless charging system, this system gets rid of the limitation of planar coil charging for planar coil, and can also charge normally when the receiving electrical device has a metal shell material, getting rid of the limitation of traditional charging for metal, and the adaptability of the receiving device is broader.

The invention discloses a spring oscillator device based on a planar coil, and belongs to the technical field of mechanical vibration. The top end of a vibration rod is in contact with a cable, and the bottom is connected with a sleeve; the sleeve is fixedly connected with the upper cover plate; an exciting coil insulating plate, a fixed coil insulating plate and a bottom supporting plate are sequentially arranged below the upper cover plate; the limit spring sleeves the impact rod, the bottom of the limit spring is fixedly connected with the middle of the excitation coil insulating plate, and the limit spring and the impact rod are slidably arranged in the limit hole and the sleeve of the upper cover plate; the upper end of the guide polish rod penetrates through a sliding hole of the excitation coil insulating plate and is connected with the upper cover plate, and the bottom is fixedly connected with the fixed coil insulating plate; an exciting coil is arranged in the exciting coil insulating plate, and a fixed coil is arranged in the fixed coil insulating plate. Based on the electromagnetic induction principle, when electrified, the exciting coil and the fixed coil generate variable magnetic fields in opposite directions, the exciting coil vibrates up and down under the combined action of electromagnetic force and gravity, cleaning operation is achieved, cost is low, efficiency is high, safety is higher, and damage to cables is small.

Disclosed herein is a stellarator with two sets of coils: a set of encircling coils that encircle the plasma axis, and a set of shaping coils that do not encircle any other coils or plasma. In some embodiments, the encircling coils include structural elements to maintain their shape under magnetic forces. In some embodiments, the shaping coils are attached to one or more structural elements that, together with the shaping coils, constitute a magnetic field shaping unit. Also disclosed is a controller that can modify the current through one or more subsets of the coils to achieve target plasma parameters. Also disclosed is a method for designing the set of shaping coils by discretizing the surface dipole or current potential distribution.

The purpose of the present invention is to provide a planar coil assembly with a simplified structure for electrically connecting a plurality of planar coils and also having the function of a low-loss electrical signal path. The planar coil assembly (AR) comprises: a first planar coil (SU1) having a first spiral shape in which a first conductor is wound counterclockwise or clockwise with respect to a first core; and a second planar coil (SU2) having a second spiral shape in which a second conductor, located in the same layer as the first conductor, is wound with respect to a second core using the same winding as for the first planar coil and in which there is an angular deviation from the first spiral shape.

The invention provides a modular reconfigurable active compensation system and a planar coil segmentation design method based on stream function superposition and optimization, relates to the field of electromagnetic compensation, and solves the problems of low space utilization rate, large weight, weak installation adaptability, low cost and the like caused by the fact that a traditional overall stream function compensation coil is inseparable and poor in flexibility and depends on a whole board substrate. And the problems of complex manual winding process, poor consistency, small effective compensation area and insufficient magnetic field uniformity caused by insufficient consideration of the boundary mirror image effect of the magnetic shielding chamber are solved. Through an algorithm design process, a bulk flow function coil pattern which is difficult to divide traditionally is decomposed into a plurality of discretized sub-coil modules which can be independently manufactured, flexibly arranged and electrically connected, so that high-performance magnetic field compensation is realized, and meanwhile, the aims of system light weight, high space utilization rate and reconfigurability are fulfilled.

A device for detecting a key press of a keyboard, including a key module, a circuit substrate, a planar coil arranged on or in the circuit substrate, and at least one damping element, wherein the at least one damping element for damping the planar coil is movably arranged in the key module between a rest position and an actuation position, wherein the damping element executes a first actuating movement during the movement in the direction of the actuation position and executes a second actuating movement during the movement towards the rest position, and wherein the device outputs at least one electrical signal when carrying out the first actuating movement and / or the second actuating movement. A keyboard including one or more such devices and to a method for detecting a key press of a key module with such a device.

The invention discloses an inductive displacement sensor for a magnetic bearing, relates to the technical field of measurement, and provides a multichannel non-contact displacement detection system and method based on two LDC1614 sheets. According to the invention, an LC resonant circuit formed by two LDC1614 polling 8-channel PCB planar coils is adopted, and non-contact displacement detection is realized through resonant frequency / amplitude deviation caused by approaching of a metal target. A system reads 28-bit digital quantity through software I2C, and the 28-bit digital quantity is output through Modbus-RTU / Bluetooth after short window statistics, outlier suppression, temperature compensation and table look-up linear interpolation processing of more than or equal to 138 points. Hardware compensation is replaced by software and hardware collaboration and LUT calibration, a self-recovery mechanism is provided, and while precision and consistency are guaranteed, the system has the advantages that hardware is simple, multiple channels are easy to expand, robustness is high, industrial integration is easy and the like. And industrial integration is easy, operation and maintenance are convenient, and the practical value is good.