180 results about "Magnetic structure" patented technology

The invention discloses a reweighted inversion method and system for a magnetic anomaly modulus under a residual magnetism condition and a storage medium, and belongs to the technical field of magnetic exploration, and the method comprises the following steps: converting the magnetic anomaly modulus to obtain the magnetic anomaly modulus; carrying out nonlinear forward modeling on the magnetic anomaly modulus; and linearizing a forward modeling formula of the magnetic anomaly modulus, constructing a reweighted minimum model objective function, solving the reweighted minimum model objective function, finally obtaining the magnetization intensity of an inversion space, and delineating a target geologic body. According to the scheme, the nonlinear forward modeling formula of the magnetic anomaly modulus is subjected to linear representation, and the sensitivity matrix serving as depth weighting is further updated by utilizing the magnetic anomaly modulus kernel function matrix updated along with iteration, so that the reweighting minimum model objective function is constructed, the precision of magnetic anomaly modulus inversion under the residual magnetism condition is improved, and the accuracy of the magnetic anomaly modulus inversion under the residual magnetism condition is improved. And a more reliable inversion result is provided for more accurate depiction of a deep magnetic structure, mineral resource exploration and the like.

A system for inductive charging is provided. The system comprises a magnetic structure having one or more pieces that include substantially flat first and second surfaces. Each piece includes at least two magnetic poles of opposite polarity located at each of the first and second surfaces such that each piece includes at least two pairs of opposing magnetic poles oriented to cause magnetization in two opposing directions. The magnetic structure creates a magnetic field with flux densities having substantially similar magnitudes relative to the first and second surfaces as a function of distance from the first and second surfaces, respectively, along an axis that runs perpendicular to the first and second surfaces. The magnetic field does not impair normal operation of a magnetically sensitive component. The magnetic structure is configured to create a magnetic attachment between devices and to align the charging and receiving coils in the devices.

An electronic device and a protective cover having a magnetic structure with multiple opposing poles on a surface for use with magnetically sensitive components is provided. The magnetic structure is configured for aligning the electronic device and the protective cover, and creating a separable magnetic attachment between the electronic device and the protective cover. The magnetic structure includes more than three magnetic sections arranged in a linear configuration, with each of the magnetic sections magnetized in a direction perpendicular to first and second surfaces of the magnetic structure. The magnetic structure generates flux densities having similar magnitudes relative to the first and second surfaces as a function of distance from each surface, respectively, along a perpendicular axis. Adjacent magnetic sections are magnetized in opposing directions such that the magnetic structure does not impair normal operation of a camera, a compass, and an inductive charger in the electronic device.

The invention discloses a magnetic memory unit and an SOT-MRAM memory, which are applied to the technical field of MRAM memories, and comprise at least one group of differential bits and an auxiliary magnetic structure, the differential bit includes: a spin orbit moment provision line; the two magnetic tunnel junctions are positioned on one side of the spin orbit moment providing line; the differential bit has a first direction parallel to the axis of the spin orbit moment providing line and an initial magnetization direction perpendicular to the first direction; the auxiliary magnetic structure provides a bias magnetic field for the two magnetic tunnel junctions in the same differential bit, and the bias magnetic field has a component in the first direction and a component in the initial magnetization direction; the component directions of the two bias magnetic fields along the initial magnetization direction are the same, and the component directions of the two bias magnetic fields along the first direction are opposite. Initialization can be completed only through one-time initial magnetization in the initial magnetization direction, and meanwhile the reliable writing-in problem and the high-speed reading problem of the perpendicularly magnetized MTJ zero magnetic field are solved.

An optical isolator for generally collimated laser radiation includes a single polarizing element, at least one Faraday optical element, at least one reciprocal polarization altering optical element disposed at the single polarizing element, at least one reflective optical element for reflecting radiation to provide an even number of passes through the at least one Faraday optical element, and a magnetic structure. The magnetic structure is capable of generating a magnetic field within the at least one Faraday optical element that is generally aligned with the even number of passes along a beam propagation axis. The optical isolator is configured to receive generally collimated laser radiation, which passes through the single polarizing element and the at least one reciprocal polarization altering optical element and which makes at least two passes through the at least one Faraday optical element, whereby generally collimated laser radiation is output from the optical isolator.

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.

A method for monitoring a first attribute of a target object within a non-magnetic structure using a first probe coupled to the non-magnetic structure and located proximate the target object at a first detection region, the method includes a) introducing, at the first detection region, a pulsed electromagnetic interrogation signal along the electromagnetic circuit and through the target object using a first transmitter; b) receiving, at the first detection region, a response electromagnetic signal that is induced in the target object and generating a corresponding response electrical signal comprising time information and voltage information using a first receiver; c) determining the first attribute of the target object at the first detection region; d) generating a corresponding first output signal; and e) comparing one of the first output signal and the first attribute, to a stored value for the first detection region to determine if a condition is met.

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 utility model discloses a sounding unit, including basin stand, U iron, central magnetic structure, annular magnetic structure, treble vibration subassembly, bracing frame and bass vibration subassembly, U iron's enclosure bulkhead connects basin stand, central magnetic structure is provided on U iron, annular magnetic structure surrounds central magnetic structure and is provided on U iron, annular magnetic structure forms treble magnetic gap between annular magnetic structure and central magnetic structure, a bass magnetic gap is formed between the enclosure wall of the U iron and the annular magnetic structure; the high-pitch vibration assembly comprises a high-pitch vibrating diaphragm assembly which is connected with the annular magnetic structure. The supporting frame is arranged at the top of the annular magnetic structure, the supporting frame is provided with an extending edge extending inwards, and at least part of the area of the extending edge extends to the position above the high-pitch vibrating diaphragm assembly; the bass vibration assembly comprises a bass diaphragm assembly, the bass diaphragm assembly is integrally in a ring frame shape, the inner edge of the bass diaphragm assembly is connected with the extension edge, and the outer edge of the bass diaphragm assembly is connected with the basin stand. The sounding unit is novel and small in structure and good in bass compliance.

The utility model discloses a sounding unit, which comprises two structural units, each structural unit comprises a basin stand, U iron, a central magnetic structure, an annular magnetic structure, a high-pitch vibration assembly, a support ring and a low-pitch vibration assembly, and the basin stand is provided with a notch; the enclosure wall of the U iron is connected with the basin frame and blocks the notch; the central magnetic structure is arranged on the U iron; the annular magnetic structure surrounds the central magnetic structure and is arranged on the U iron, a high-pitch magnetic gap is formed between the annular magnetic structure and the central magnetic structure, a low-pitch magnetic gap is formed between the enclosure wall of the U iron and the annular magnetic structure, and a through hole communicated with the high-pitch magnetic gap is formed in the U iron; the supporting ring is arranged on the annular magnetic structure; u irons of two structural units in the sounding unit are connected with each other, high-pitch magnetic gaps of the two structural units are communicated through a through hole, gaps of the two basin frames are correspondingly spliced to form an installation window, and a vibration motor is arranged in the installation window. The sound production unit has a vibration function and realizes high integration.

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.

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 proximal to 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.

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 magnetic sensor comprises a soft magnetic structure with a plurality of yokes and magnetoresistive (MR) elements configured to detect a magnetic field generated by the plurality of yokes, the MR elements being adjacent to the plurality of yokes in a transverse direction. The soft magnetic structure further comprises a plurality of first additional magnetic bodies and a plurality of second additional magnetic bodies arranged adjacent to the plurality of yokes in a longitudinal direction and outside the plurality of yokes in an orthogonal direction that is orthogonal to both the transverse and longitudinal directions.

The miniature loudspeaker comprises a basin stand, a magnetic circuit assembly, a vibrating diaphragm assembly, an outer voice coil and a plurality of vertical voice coils, the magnetic circuit assembly comprises a yoke, a central magnetic structure, an annular magnetic structure and a side magnetic structure, the central area of the yoke is provided with a hollow convex hull protruding downwards, the central magnetic structure is arranged on the inner bottom surface of the hollow convex hull, and the annular magnetic structure is arranged on the inner bottom surface of the hollow convex hull. The annular magnetic structure surrounds the hollow convex hull and is arranged on the top surface of the yoke, the side magnetic structure is arranged on the outer side of the annular magnetic structure, an inner ring magnetic gap is formed between the central magnetic structure and the annular magnetic structure, and an outer ring magnetic gap is formed between the annular magnetic structure and the side magnetic structure; the central magnetic structure comprises a lower central magnetic steel, a lower central washer, a middle central magnetic steel, an upper central washer and an upper central magnetic steel which are sequentially stacked and connected from bottom to top, the magnetic pole polarity of the lower central magnetic steel is the same as that of the upper central magnetic steel, and the magnetic pole polarity of the lower central magnetic steel is opposite to that of the middle central magnetic steel. The miniature loudspeaker is excellent in performance and good in acoustic performance.

The invention discloses a method for high-precision determination of magnetic moment of micro-nano magnetic structure based on electron holography, comprising the following steps: S1, observing a sample under a transmission electron microscope, and obtaining two electron holograms before and after magnetization reversal by tilting the sample; S2, in an image processing program, reconstructing a phase map from the two holograms in step S1, subtracting them from the center, and halving them to obtain a sample magnetic phase map; S3, performing circular loop integral fitting and extrapolation to zero on the magnetic phase map obtained in step S2 to obtain an induced magnetic moment, and then obtaining a magnetic moment value according to the relationship between the magnetic induced moment and the magnetic moment. The method of the invention can realize quantitative measurement of high-precision magnetic moment at micro-nano scale.

The utility model provides an anti-falling magnetic attraction structure which is used for being connected with a handheld device and is provided with a fixing piece and a clamping and fixing assembly. The fixing piece can be magnetically attracted to the handheld device and is provided with a through hole and a plurality of grooves. The through hole penetrates through the fixing piece. The grooves are formed in the face, close to the handheld device, of the fixing piece, arranged at intervals and communicated with the penetrating hole in a surrounding mode. The clamping and fixing assembly can be arranged in the fixing piece in a penetrating mode and is provided with a sliding groove and two moving pieces. The sliding grooves correspond to the penetrating holes in position. The moving parts can move in the sliding grooves, and each moving part can be selectively clamped in one of the grooves. The utility model has the advantages that the movable piece can be released from clamping only by rotating magnetic repulsion, and the operation is convenient.

The invention discloses a rotating ball device for teaching, and relates to the technical field of teaching aids. The device comprises a driving assembly, the top of the driving assembly is fixedly connected with a ball assembly, and the surface of the ball assembly is bonded with an index line assembly through an adhesive. Directional rotation of the sphere is achieved through the driving assembly, the spiral relation between the current direction and the magnetic induction line in the ampere rule can be dynamically presented in combination with the spherical surface index line assembly and the internal magnet structure, and when the electrified copper rail generates annular current, an observer can observe the annular current through the center window of the transparent sphere. The law that the direction of a magnetic induction line of a sphere center changes along with current can be visually seen, the sphere rotates in cooperation with the sphere, three-dimensional spiral linkage of current-magnetic induction line is clearly shown, in Lorentz force teaching, when an external magnet is close to the surface of the sphere, spherical surface motion charge identification is in real-time linkage with the rotation direction of the sphere, and the teaching efficiency is improved. And the charge movement direction, the magnetic field direction and the stress direction are dynamically associated in a space vector form.

The invention discloses a high-initial-thrust electromagnetic actuating device with a multi-magnetic-field mixing effect, and belongs to the technical field of aerospace. The problem that a spacecraft cannot be separated at a preset speed due to the fact that an existing electromagnetic actuator is small in initial thrust is solved. The stator comprises an outer magnetic structure, an inner magnetic structure, an upper magnetic structure, a lower magnetic structure and a stator coil structure, and the lower magnetic structure comprises a lower magnetic yoke, a lower inner axial magnetic ring and a lower outer axial magnetic ring, the inner magnetic structure comprises an inner magnet yoke, an inner upper radial magnet ring, an inner middle axial magnet ring and an inner lower radial magnet ring, wherein the inner upper radial magnet ring, the inner middle axial magnet ring and the inner lower radial magnet ring are coaxial and sequentially sleeved outside the inner magnet yoke from top to bottom. The magnetic flux loop formed by the two radial magnetizing permanent magnet rings with small heights is utilized to increase the air gap magnetic field intensity of the part, close to the stator coil, between the two radial permanent magnet rings with large heights, so that the Ampere force borne by the rotor coil is increased, and the initial thrust is increased.

Methods and apparatus for processing fluids are described. In various aspects, a fluid processing system may include a magnetic assembly that includes a plurality of magnetic structures configured to generate a magnetic field gradient within a fluid container. The magnetic structures may be formed as a plurality of electromagnets configured to be individually actuated by a controller. Each of the electromagnets may generate a magnetic field within the fluid container. The electromagnets may be differentially actuated to create a magnetic field gradient within the fluid container to agitate, mix, or otherwise influence magnetic particles disposed within the fluid container. Activation of the electromagnets of an electromagnetic structure may generate a magnetic field gradient that influences magnetic particles in an x-y direction. In addition, activation of the electromagnets of a plurality of electromagnetic structures may generate magnetic field gradients that influences magnetic particles in an x-y direction and z-direction.

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 present invention is in the field of a measuring system for measuring physical properties of a magnetic metallic structure, in particular for measuring an energy flux in said magnetic structure, a method wherein said sensor system is used, such as for driving piles, and a computer program for driving said piles and / or for carrying out said method.

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.

This invention discloses a magnetically aspirated wind-resistant rubber seismic isolation bearing, comprising a seismic isolation bearing and several sets of wind-resistant devices. The wind-resistant devices are distributed along the edge of the seismic isolation bearing, and each set includes a strong magnet and a steel column. The strong magnet is positioned on the upper part of the seismic isolation bearing. One end of the steel column engages with the strong magnet, allowing for magnetic attraction / detachment to resist wind and release the deformation capacity of the seismic isolation bearing. This solution uses a magnetic structure to connect or detach from the seismic isolation bearing to resist wind and release its deformation capacity. It can be used multiple times, and the wind-resistant devices do not need to be replaced after an earthquake, significantly reducing post-earthquake maintenance costs.

A magnetic sensor is provided with: a soft magnetic structure including a plurality of yokes; and an MR element that is adjacent to the plurality of yokes in the short-side direction of the plurality of yokes and that is configured to detect a magnetic field generated from the plurality of yokes. The soft magnetic structure further includes a plurality of first additional magnetic bodies and a plurality of second additional magnetic bodies, the plurality of first additional magnetic bodies and the plurality of second additional magnetic bodies being arranged so as to be aligned with the plurality of yokes in the longitudinal direction of the plurality of yokes. The plurality of magnet yokes are disposed so as to be offset with respect to the plurality of magnet yokes in orthogonal directions orthogonal to the short-side direction and the long-side direction, respectively.