72 results about "Magnetic structure" patented technology

The invention discloses a slope monitoring method and system based on an unmanned aerial vehicle, and relates to the technical field of intelligent geological disaster monitoring, and the method comprises the steps: carrying a magnetic gradient measurement unit and a laser radar through the unmanned aerial vehicle, and collecting magnetic gradient tensor collection and slope surface point cloud from multiple heights and multiple routes; on the basis of a gradient adaptive weighted total variation inversion method, slope gradient information extracted by a digital elevation model is introduced into regularization weight adjustment, so that an inversion result can be adaptively adjusted in different gradient areas; based on a magnetic susceptibility distribution model, a magnetic construction adaptive clustering and risk index calculation method is used, and through amplitude density index and gradient constraint search, clustering identification and risk quantitative partitioning of a high-gradient accumulation area are carried out. Therefore, expansion from surface slope deformation monitoring to deep concealed structure detection is realized, and concealed slip zones or fissure zones can be accurately revealed under complex terrain conditions.

The embodiment of the utility model provides a frame assembly and electronic equipment, and belongs to the technical field of electronics, magnetic structures are embedded on two frame structures, and when the electronic equipment is in a closed state, the magnetic structures on the two frame structures attract each other and are stably kept in the closed state. The distance between the two frame structures is relatively close, so that the distance between the two magnetic structures is also close. Compared with the prior art that a magnet is located in a containing cavity below the display screen / face shell, the display screen, the face shell, the distance between the display screen and the face shell and the like do not exist between the two magnetic structures, the distance between the two magnetic structures is further effectively shortened, and higher magnetic efficiency is achieved between the magnetic structures. The same or better magnetic attraction effect can be achieved by using a smaller number of magnetic structures with smaller volume, and the weight of the electronic equipment is obviously reduced. In addition, the space occupied by a magnet arranged below the face shell / the display screen can be saved, thinning of the first shell and the second shell is facilitated, and the light and thin design of the electronic equipment is achieved.

Systems and methods for magnetic field shaping in brushless direct current (BLDC) motors are disclosed. In some examples, the method includes forming a stator coil of a BLDC motor. The BLDC motor includes a rotor including a vessel mover disposed proximate the stator coil and including a magnetic structure. The stator coil includes windings comprising layers interconnected by intra-coil vias to form a continuous conductive path. The formation of the stator coil includes introducing variation(s) between two or more of the windings of two or more of the layers according to a desired magnetic field pattern. The stator coil is then driven by injecting a control signal to the conductive path to energize the stator coil, impart a directed force on the vessel mover to move the vessel mover in a direction of travel in accordance with the desired magnetic field pattern, and thereby commutate the BLDC motor.

The embodiment of the invention provides a rotor, a motor, a power assembly and a vehicle. The rotor comprises a rotor core and a magnetic structure, the magnetic structure is arranged on the rotor core and extends along the axial direction of the rotor core; wherein the magnetic structure comprises a first magnetic part and a second magnetic part which are arranged along the axial direction of the rotor core, and the coercive force of the first magnetic part is greater than that of the second magnetic part. By arranging the first magnetic part and the second magnetic part which are different in coercive force, the overall magnetic stabilization capability of the magnetic structure can be improved while magnetic adjustment is achieved, and the stability and reliability of motor global working condition operation can be improved.

The invention relates to a system for acquiring images by means of intraoperative magnetic resonance, in particular for the acquisition of progression state control images during brain surgery. The system comprises: a magnetic structure that generates a static magnetic field and delimits or encloses, on at least some sides, an accommodation space for at least the head of the patient; and a bed movable in different relative positions with respect to the magnetic structure and comprised between at least an end position, in which the bed is at least partially inside the accommodation space, and an outer end position, in which the bed is at least partially inside the accommodation space, in which the bed is at least partially inside the accommodation space. The bed is outside the accommodation space and at a predetermined distance from the magnetic structure. The bed is supported in a cantilevered manner by means of the column and is rotatable at least in an angular movement relative to the column so that the bed can continuously oscillate between two extreme positions, in one extreme position defined as an imaging position, the end of the bed frame opposite the outer end is positioned inside the patient's accommodation space, and in the other extreme position, the end of the bed frame opposite the outer end is positioned inside the patient's accommodation space. Wherein the head of the patient is in a correct image acquisition position relative to the magnetic structure, and in the other of those extreme positions, an end of the patient opposite the outer end is positioned at a predetermined distance from the magnetic structure and at a surgical operation position.

The present disclosure relates to, in part, an inductor structure that includes an etch stop layer arranged over an interconnect structure overlying a substrate. A magnetic structure including a plurality of stacked layers is arranged over the etch stop layer. The magnetic structure includes a bottommost layer that is wider than a topmost layer. A first conductive wire and a second conductive wire extend in parallel over the magnetic structure. The magnetic structure is configured to modify magnetic fields generated by the first and second conductive wires. A pattern enhancement layer is arranged between the bottommost layer of the magnetic structure and the etch stop layer. The pattern enhancement layer has a first thickness, and the bottommost layer of the magnetic structure has a second thickness that is less than the first thickness.

The utility model discloses a carbon nanotube powder is with magnetic device, include: concave type suit case, processing support and replacement formula magnetic structure, concave type suit case install on processing support, replacement formula magnetic structure install in the inside of concave type suit case, the utility model relates to carbon nanotube production technical field adopts double spin magnetic system, and through the disc structure of reverse differential rotation, makes powder complete magnetic adsorption under dynamic dispersion state, and realizes the intelligent regulation and control of magnetic circuit with the cooperation of elastic magnetic transmission mechanism, guarantees adsorption precision and avoids mechanical wear and tear, the original modularization magnetic circuit design is through the magnetic transmission path of optimal arc shunt plate - metal plug - convex axle rod, realizes magnetic field intensity gradient distribution, and can accurate control magnetic attraction area and desorption timing with the cooperation of electromagnetic on - off control.

The utility model provides a kind of anti-magnetic structure of water meter belongs to water meter technical field.It solves how to avoid the problem of water stealing phenomenon occurs.In the anti-magnetic structure of this water meter, water meter includes base and the magnetic steel in the base, anti-magnetic structure includes meter cover, anti-magnetic structure further includes annular anti-magnetic sleeve, the anti-magnetic sleeve is set to base outside and around the magnetic steel setting, the anti-magnetic sleeve is positioned in the base outside along circumference direction, the meter cover is connected and fixed in the top of the base and located in the anti-magnetic sleeve above, and the meter cover is pressed on the base with the anti-magnetic sleeve.The anti-magnetic structure of this water meter can avoid the occurrence of water stealing phenomenon.

This utility model discloses an electronic working switch, a magnetic particle flaw detector starting circuit, and a magnetic particle flaw detector. The electronic working switch includes: a switch housing, a magnetic field sensor, a magnetic structure, and a magnetic shielding structure. The switch housing has an accommodating space for accommodating the magnetic shielding structure. The magnetic field sensor is disposed on the side wall of the switch housing, and the magnetic structure is disposed on the side wall and opposite to the magnetic field sensor. The magnetic shielding structure is slidably disposed in the accommodating space inside the switch housing to isolate the magnetic field between the magnetic structure and the magnetic field sensor. The electronic working switch in this application converts the positional change of the magnetic shielding structure relative to the magnetic field sensor into a change in the working signal output of the working switch, reducing wear and failure problems caused by mechanical contact and improving measurement accuracy and stability.

A quantum vapor cell may include a vapor cell chamber configured to contain alkali metal vapor and a magnetic structure integrated with or positioned adjacent to the vapor cell chamber. The magnetic structure may be configured to generate, shape, or control a magnetic field through the vapor cell chamber and may include one or more of a permanent magnetic material, a soft magnetic material, a magnetic field shaping element, or a combination thereof.

The magnetic attraction idling structure lock cylinder capable of preventing the shifting wheel from rotating after violent breaking comprises a lock cylinder body, and lock liners are arranged on the two sides of the lock cylinder body respectively. A transmission piece is fixedly arranged at the front end of the lock cylinder, and a notch is formed in the front end of the transmission piece. A dial wheel assembly is arranged in the middle of the lock cylinder body and comprises a dial wheel, and grooves are formed in the upper side and the lower side of the inner wall of the dial wheel respectively. A first dial wheel inner rotor and a second dial wheel inner rotor are arranged on the two sides of the dial wheel respectively, and transverse grooves and vertical grooves are formed in the first dial wheel inner rotor and the second dial wheel inner rotor; the upper ends and the lower ends of the notches in the front ends of the transmission pieces on the two sides extend into the first shifting wheel inner rotor and the second shifting wheel inner rotor correspondingly and are located in the vertical grooves. A strong magnetic block is arranged in the transverse groove; the upper end and the lower end of the notch are respectively provided with an inner rotor check block, and the upper end of the inner rotor check block is located in the groove of the shifting wheel. The lock cylinder can be prevented from being forcibly unlocked by breaking off the lock cylinder, and has the advantage of being good in safety.

The application relates to the technical field of kitchen utensils, in particular to a gas stove. The gas stove comprises a stove table, a knob, a magnetic structure, an induction coil, a detection piece and a control assembly; the stove table is provided with a table top, and an assembly space is arranged below the table top; the knob comprises a rotating rod and a rotating shell sleeved on the rotating rod, the rotating rod is rotationally connected to the stove table, and the rotating shell is arranged above the table top and is provided with a first accommodating cavity; the magnetic structure comprises at least two magnetic parts which are arranged in a circumferential direction of the knob and are spaced apart, and the magnetic force of each magnetic part is different; in the height direction of the stove table, the projection of the induction coil and the projection of one of the magnetic parts are arranged in an overlapping mode, the induction coil is configured to generate an induced current in response to the rotation of the knob, one of the induction coil and the magnetic structure is mounted in the first accommodating cavity, and the other is mounted in the assembly space. The knob is rotated to make the induction coil cut the magnetic field, generate currents of different sizes, and according to the current detection signal of the detection piece, the control assembly can accurately control the size of the fire.

A device includes: a case configured to be detachably coupled to an electronic device including a camera and a planar induction coil, the case including a camera opening exposing a portion of the camera to an outside in a state in which the case is coupled to the electronic device; a magnetic structure disposed in or on the case and having a loop shape surrounding the planar induction coil; and a magnetic shielding member having a shape corresponding to the loop shape the magnetic structure, wherein the magnetic shielding member includes: a first portion interposed between the electronic device and the magnetic structure in the state in which the case is coupled to the electronic device and configured to cover a lower surface of the magnetic structure; and a second portion facing the camera opening and configured to cover an outer side surface of the magnetic structure.

This utility model discloses a magnetic device, relating to the field of magnetic structure technology. The magnetic device includes a first circuit board, a second circuit board, conductive elements, and a magnetic core. Both the first and second circuit boards have multiple corresponding first and second connection pads. The conductive elements include first and second conductive elements. The two ends of the first conductive element are respectively soldered to the first connection pads on the first and second circuit boards, and the two ends of the second conductive element are respectively soldered to the second connection pads on the first and second circuit boards. The magnetic core is disposed between the first and second circuit boards and between the first and second conductive elements. The first and second connection pads on the first and second circuit boards are connected one-to-one by traces to form a winding. The technical solution provided by this utility model enables fully automated production of magnetic devices, improving production efficiency.

This invention relates to the field of household appliance technology, and discloses a magnetic knob, a household appliance, and a control method. The magnetic knob includes: a knob body comprising a base, a top cover rotatably connected to the base, and a rotating cavity; a damping structure comprising a magnetic fluid and a coil, the magnetic fluid being disposed within the rotating cavity, and the coil surrounding the magnetic fluid; when the top cover rotates, a controller is configured to be electrically connected to the coil and to control the direction of the current in the coil according to the rotation direction of the top cover, so that at least a portion of the coil generates an effective magnetic field opposite to the rotation direction, and the magnetic fluid is configured to generate a damping force that resists the rotation of the top cover under the magnetic force of the effective magnetic field. By controlling the direction of the current in the coil, the magnetic fluid generates a damping force that resists the rotation of the top cover, transforming the non-contact magnetic structure into a tactile feel with resistance, resulting in better force feedback, avoiding over-adjustment caused by misoperation, improving adjustment accuracy, and optimizing the user experience.

The present disclosure relates to, in part, an inductor structure that includes an etch stop layer arranged over an interconnect structure overlying a substrate. A magnetic structure includes a plurality of stacked layers is arranged over the etch stop layer. The magnetic structure includes a bottommost layer that is wider than a topmost layer. A first conductive wire and a second conductive wire extend in parallel over the magnetic structure. The magnetic structure is configured to modify magnetic fields generated by the first and second conductive wires. A pattern enhancement layer is arranged between the bottommost layer of the magnetic structure and the etch stop layer. The pattern enhancement layer has a first thickness, and the bottommost layer of the magnetic structure has a second thickness that is less than the first thickness.

A sensing system and method for sensing position includes a first magnetic rail for generating a magnetic field and a second sensor for sensing the magnetic field. The first magnetic rail includes a first number of multipoles and is securely fixed to the second magnetic rail for generating the magnetic field, thereby forming a magnetic structure. At least two sensors are included. The first sensor is positioned closer to the first magnetic rail than closer to the second magnetic rail. The second sensor is positioned closer to the second magnetic rail. The distance between the first sensor and the second magnetic rail is greater than the distance between the second sensor and the second magnetic rail. The magnetic flux density generated by the first and second magnetic rails follows a ratio of 2 or higher.

The application discloses a large initial thrust electromagnetic actuator with multi-magnetic field mixing effect and belongs to the technical field of aerospace. The application solves the problem that the existing electromagnetic actuator has small initial thrust and causes the spacecraft to be unable to separate at a predetermined speed. The stator comprises an outer magnetic structure, an inner magnetic structure, an upper magnetic structure, a lower magnetic structure and a stator coil structure, the lower magnetic structure comprises a lower magnetic yoke and a lower inner axial magnetic ring and a lower outer axial magnetic ring which are installed at the top end of the lower magnetic yoke, and the inner magnetic structure comprises an inner magnetic yoke and an inner upper radial magnetic ring, an inner middle axial magnetic ring and an inner lower radial magnetic ring which are coaxial and are sequentially sleeved on the outside of the inner magnetic yoke from top to bottom. The magnetic flux loop formed by two small-height radial magnetizing permanent magnetic rings is utilized to increase the air gap magnetic field intensity of the part close to the stator coil between the two high-height radial permanent magnetic rings, so that the ampere force borne by the mover coil is increased, and the initial thrust is increased.

The present application relates to the technical field of wires and cables, and discloses a take-up and pay-off device. The take-up and pay-off device comprises a magnetic structure, a control device, and a magnetic cable, wherein the control device is connected to the magnetic structure and is configured to adjust the strength of a magnetic field of the magnetic structure, and the magnetic cable can be attracted to the magnetic structure; when the take-up and pay-off device pays off the cable, the control device weakens the magnetic field of the magnetic structure, so that the magnetic cable is disengaged from the magnetic structure to be paid off; when the take-up and pay-off device takes up the cable, the control device enhances the magnetic field of the magnetic structure, so that the magnetic cable is attracted to the magnetic structure to be taken up. The take-up and pay-off device of the present application can overcome difficulties in cable take-up and pay-off processes, ensure orderly winding and unwinding during cable take-up and pay-off, and achieve rapid take-up and pay-off.

The invention provides a demarcation device, a calibration tool and a calibration system. The demarcation device comprises a shell, a pendulum body, a laser module and a counterweight part. The swing body is arranged in the shell. The laser module is arranged on the pendulum body. And the counterweight piece is arranged on the pendulum body and is arranged opposite to the laser module, the counterweight piece comprises a magnetic part, magnetic poles of the magnetic part are distributed in the radial direction of the counterweight piece, and the magnetic part is arranged to controllably drive the counterweight piece to rotate under the action of a magnetic field generated by a calibration tool located outside the shell so as to adjust the gravity center of the pendulum body. The counterweight part in the demarcation device is provided with the magnetic part, so that the counterweight part obtains magnetism, under the condition that the calibration tool is not in contact with the counterweight part, the magnetic structure can be used for applying torque to the magnetic part of the counterweight part, the counterweight part is driven to rotate to change the position of the counterweight part, and therefore the calibration tool can be used for calibrating the position of the counterweight part under the condition that the casing of the demarcation device is not disassembled. And the calibration work of the demarcation device is completed.

Provided is a magnetic skyrmion memory, comprising: a magnetic structural racetrack, a magnetic tunnel junction and a ferroelectric back gate. The magnetic structure racetrack comprises a topological material layer and a ferrimagnetic layer, and is constructed to comprises a middle region and extension parts respectively extending from both sides of the middle region; the ferrimagnetic layer of the extension parts on the both sides are respectively pinned by means of antiferromagnetic coupling in opposite magnetic moment directions; the magnetic tunnel junction is located above the middle region of the magnetic structure racetrack, and is configured to electrically read a resistance state change of the memory; the ferroelectric back gate comprises a ferroelectric layer and a bottom electrode, and is located below the middle region of the magnetic structure racetrack; when a current is injected into the topological material layer, a spin orbit moment is generated, so as to control the motion of the magnetic structure of the ferrimagnetic layer in the ferrimagnetic layer; a gate voltage is applied to adjust the polarization direction of the ferroelectric layer, so as to control the magnitude of an antisymmetric exchange interaction at an interface between the topological material layer and the ferrimagnetic layer, thereby finally enabling the memory to operate in a skyrmion mode or in a binary mode.

A damage detection system for monitoring a magnetised structure for damage comprising: a magnetometer; and a controller configured to: receive a first magnetic field signal of the magnetised structure from the magnetometer; receive a second magnetic field signal of the magnetised structure from the magnetometer; determine magnetic field displacement data based on the second magnetic field signal and the first magnetic field signal; and determine a condition of the magnetised structure based on the magnetic field displacement data.

This invention proposes a non-uniform-height dual-coil electromagnetic actuation device, belonging to the aerospace field. It solves the problems of severe magnetic leakage, inability to suppress armature reaction, and low thrust density in existing electromagnetic actuators. It includes a stator and a mover. The stator comprises an upper magnetic structure, an outer magnetic structure, a lower magnetic structure, and an inner magnetic structure. The outer magnetic structure includes an outer lower radial magnetic ring, an outer central axial magnetic ring, an outer upper radial magnetic ring, and an outer yoke. The outer upper radial magnetic ring is installed on the upper inner side of the outer yoke. The outer central axial magnetic ring is installed on the middle inner side of the outer yoke and located below the outer upper radial magnetic ring. The outer lower radial magnetic ring is installed on the lower inner side of the outer yoke and located below the outer central axial magnetic ring. The mover includes a mover coil frame, an upper coil, and a lower coil. The mover coil frame is disposed within an air gap, and annular grooves are formed on both the upper and lower outer sides of the mover coil frame. It is mainly used for on-orbit servicing of spacecraft.

The application discloses a kind of full-closed liquid nitrogen consumption-free cryogenic wave oscillator cooling systems and cooling method.The system includes motor, refrigerator, cold sink, cooler, impeller, vacuum cylinder, flowmeter, bypass valve, liquid level meter, constant pressure tank, pressure stabilizing heater, cooling pipe, supply path, gas supply path, pressure relief path, backflow path, compensation heat source and the like.Cooled backflow liquid nitrogen is pressurized by impeller, enters heat exchanger and exchanges heat with cold head, temperature decreases after heat dissipation, enters cryogenic wave oscillator cooling channel again to take away heat of magnetic structure array, forming flow loop.Loop pressure can be adjusted, flow can be adjusted, temperature can be adjusted in the range of 65K-80K, and maximum output cooling capacity can vary between 400-500W.The application can realize permanent magnet array cooling of advanced light source mainstream cryogenic wave oscillator, does not need liquid nitrogen supply throughout, greatly reduces operation complexity, and has lower temperature, operation safety, wide application and other characteristics.

A sensing system and a method for sensing position include a first magnetic track comprising a first number of multipoles for generating a magnetic field solidarily fixed to a second magnetic track for generating a magnetic field and a second sensor for sensing magnetic field, forming a magnetic structure. At least two sensors are included. The first sensor is positioned proximal to the first magnetic track, closer to the first magnetic track than to the second magnetic track. The second sensor is positioned between the first sensor and the second magnetic track. The distance between the first sensor and the second magnetic track is larger than the distance between the second sensor and the second magnetic track. The magnetic flux density generated by the first and second magnetic tracks follow a ratio of two or more.

The invention relates to a single-target magnetron sputtering manganese-tin alloy film and a preparation method thereof. And the Mn3Sn / MgO heterostructure of the Mn3Sn film is prepared through single-target magnetron sputtering. A single crystal epitaxial Mn3Sn thin film or a non-pure epitaxial Mn3Sn thin film is grown on an MgO (111) single crystal substrate. The Mn3Sn thin film is pure in structure, high in crystallization quality and more beneficial to research on intrinsic magnetism and electrical transport characteristics of Mn3Sn, it is found for the first time that the magnetic structure of the prepared Mn3Sn thin film does not present a spin glass state at low temperature, and it is indicated that the magnetic structure has higher stability; meanwhile, it is observed for the first time that the longitudinal resistivity of the Mn3Sn thin film is converted from the metal conduction characteristic to the semiconductor transport characteristic along with temperature rise, and the abnormal Hall effect disappears; according to the method, the feasibility of industrial mass production is remarkably improved, the preparation cost is reduced, and the method has potential application value in development and preparation of novel topological spintronics devices.

The invention relates to the field of magnetic simulation, in particular to a magnetic simulation method for simulating a low-temperature oxidized geological sample, which comprises the following steps: S1, constructing a double-layer model in Cubit software; s2, setting interface exchange interaction constants corresponding to three exchange types including no exchange, weak exchange and uniform exchange for the double-layer structure; s3, hysteresis parameters under the three exchange interaction constants are calculated, and the numerical calculation result of which exchange constant is closer to the experimental result / literature result is judged; s4, constructing a complex multi-layer low-temperature oxidation model in Cubit software; s5, constructing a low-temperature oxidation process model based on the theoretical oxidation kinetics model and simulating particles with various particle sizes; s6, comparing a simulation result with a hysteresis parameter measured by an experiment; and S7, drawing a multi-particle-size micro-magnetic structure chart and a multi-particle-size hysteresis loop. According to the method, the oxidation process is refined, a double-layer core-shell structure of magnetite and maghemite can be constructed, and a particle aggregation model is established.

The utility model discloses a sounding unit, comprising a diaphragm assembly and a magnetic circuit assembly, the diaphragm assembly comprises a central part; the magnetic circuit assembly comprises a yoke and a central magnetic structure arranged on the yoke, the central magnetic structure is located below the central part, and a plurality of protrusions are arranged on the top face of the central magnetic structure. The sounding unit is novel in structure, in a diving test, when the central part of the vibrating diaphragm assembly is extruded by water pressure to be attached to the central magnetic structure, the central part is only attached to the upper end face of the bulge, other positions are in a suspended state, and no negative pressure is formed to generate adsorption force between the central part and the central magnetic structure; the problem that the sounding unit loses efficacy due to the fact that the central part of the vibrating diaphragm assembly is attracted to the central magnetic structure and cannot rebound is effectively avoided. The sound production unit can be obtained by transforming an existing sound production unit, and has the advantage of being easy to popularize and apply.

The invention provides a dexterous hand, a linear position measuring device and a control method thereof. The linear position measuring device comprises a lead screw and a rotating motor used for driving the lead screw to move in the axial direction, and is characterized in that the linear position measuring device further comprises a magnetic structure fixedly connected to the lead screw and a plurality of Hall sensors located in a magnetic field generated by the magnetic structure and sequentially arranged in the axial direction; the Hall sensor is used for responding to the magnetic flux density of the magnetic structure at the target position; and the measuring device obtains position data of the magnetic structure at the target position according to the magnetic flux density of the magnetic structure at the target position. The movement condition is obtained through the magnetic flux density of the magnetic structure at the target position, and then the position condition of the lead screw is reflected, so that the position measurement of the lead screw is realized. As the Hall sensor is simple in structure and small in size, when the Hall sensor is used for detecting the linear position of the lead screw, the Hall sensor does not occupy too large space and is suitable for narrow space layout of the dexterous hand.