53 results about "Surface coil" patented technology

The invention provides a coil assembly. The coil component includes: a body including a first surface and a second surface opposite to each other in a first direction and a third surface and a fourth surface opposite to each other in a second direction; a coil disposed in the main body; a first extraction electrode connected to an outer end of the coil and protruding to the first surface; a second extraction electrode connected to an inner end of the coil and protruding to the second surface; a first external electrode disposed on the third surface, extending to the first surface, and connected to the first extraction electrode; and a second external electrode disposed on the third surface, extending to the second surface, and connected to the second extraction electrode, in which a thickness of each of the first extraction electrode and the second extraction electrode in the second direction is smaller than a thickness of the coil in the second direction.

A magnetic resonance (MR) surface coil with heat dissipation element, a system including an MR surface coil and a patient table, and a magnetic resonance apparatus are described herein. The MR surface coil includes at least one RF antenna for transmitting and / or receiving RF signals, at least one electronic component electronically connected to the at least one RF antenna, a cover within which the at least one RF antenna and the at least one electronic component are arranged, and at least one heat dissipation element thermally connected to the at least one electronic component. The at least heat dissipation element is configured to dissipate thermal energy from the at least one electronic component to the outside and / or to distribute the thermal energy over a wide area.

The invention relates to an MR surface coil with a heat dissipation element, a system comprising an MR surface coil, a patient table, and a magnetic resonance device. The MR surface coil comprises at least one RF antenna for transmitting and / or receiving RF signals, at least one electronic component electrically connected to the at least one RF antenna, a housing within which the at least one RF antenna and the at least one electronic component are arranged, and at least one heat dissipation element thermally connected to the at least one electronic component, wherein the at least one heat dissipation element is configured to dissipate heat energy from the at least one electronic component to the outside and / or to distribute it over a surface.

The invention belongs to the technical field of wireless charging, and particularly discloses a method based on a magnetic resonance type wireless charging system, which comprises the following steps of: arranging a high-temperature-resistant micro temperature sensor and an array around a magnetic resonance coil curved surface to collect real-time temperature difference data, and integrating environmental noise signals as an initial multi-dimensional parameter set to obtain a preliminary temperature difference data set; according to the preliminary temperature difference data set, applying a support vector machine classification method to separate difference signals between curved surface regions, fusing preset coordinate points in a curved surface geometric parameter correlation model, and determining region sensitivity distribution characteristics; and by adopting a Kalman filtering algorithm, carrying out time sequence smoothing processing on the regional sensitivity distribution characteristics to calibrate offset caused by inaccurate matching of temperature difference data and curved surface geometry, and then obtaining calibrated sensitivity distribution. The invention aims to solve the problem that the influence of temperature distribution difference on frequency matching cannot be accurately identified and adapted under the dynamic temperature change of a complex curved surface coil in the prior art.

The invention relates to the technical field of center surface coiling and splitting machines, and discloses an automatic feeding structure of a center surface coiling and splitting machine, the automatic feeding structure comprises an air expansion shaft for fixing coil stock and two parallel support plates, and the positions, close to the two ends, of a shaft body of the air expansion shaft are fixedly sleeved with positioning bearings. Rigid collision between the conversion gear and the tensioning gear is avoided through elastic rotation of the conversion gear, additional abrasion between the tensioning gear and the conversion gear is avoided, meanwhile, the whole conversion gear rotates around the axis of the magnetic resistance gear relative to the magnetic resistance gear, collision between the conversion gear and the magnetic resistance gear is avoided, and the transmission efficiency is improved. The limiting oil cylinder drives the movable rod to stretch out and draw back to drive the rotating block, the conversion gear and the magnetic resistance gear to rotate or move, the meshing relation is changed, the meshing face of the magnetic resistance gear is changed, the service life of the magnetic resistance gear is prolonged, the transmission precision and stability of the magnetic powder brake are guaranteed, and the follow-up roll material slitting quality is guaranteed.

The invention relates to a superparamagnetic (SPM) transducer comprising:-a rigid body (10) having a longitudinal central axis (X) and two planar surfaces (101, 102) at each of the opposite ends of the body (10) in the direction of the longitudinal central axis (X), the two planar surfaces (101, 102) being substantially perpendicular to the longitudinal central axis (X); -at least one support channel (103) formed in the body (10) and housing an SPM coil (2), the support channel (103) extending parallel to the longitudinal central axis (X) and opening to the two planar surfaces (101, 102), the SPM coil (2) being formed by a core based on an SPM material, around which at least one electrical conductor is wound. Further, the feedback winding (3) is formed of an electrical conductor along the longitudinal central axis (X) and wound on the outer surface of the body (10).

The invention provides a thin-size inductor full-page processing method which comprises the steps that S1, a full-page double-layer coil is prepared and comprises a first face coil, a second face coil and an insulating layer located between the first face coil and the second face coil, and the first face coil and the second face coil are the same in thickness; and S2, magnetic slurry is laid on the first face of the full-page double-layer coil, grinding is conducted after curing is conducted till the full-page thickness is H1, and H1 is equal to A + h1 + h2. And S3, magnetic slurry is laid on the second face of the full-page double-layer coil, grinding is conducted after curing is conducted till the full-page thickness is H2, and H2 is equal to A + (H + h2) / 2. And S4, the first surface is ground again until the thickness of the whole plate is H, and a whole plate inductor body is obtained. Wherein H is the final required thickness of the inductor body, h1 is the thickness of the first surface coil, h2 is the thickness of the double-layer coil insulating layer, and A is greater than (H-h2) / 2. According to the method, the precision requirement for slurry laying is low, and meanwhile it is effectively guaranteed that the thicknesses of magnets covered by the upper coil and the lower coil are consistent.

To provide a coil electronic component which is thin, and with which the volume loss of a magnetic substance is none.SOLUTION: A disclosed coil electronic component may include: a magnetic substance having a first and a second face facing each other in a first direction, a third and a fourth face facing a second direction and connecting the first and the second faces, a fifth and a sixth face facing a third direction and connecting the first and the second faces; a coil at least part of which is embedded in the magnetic substance; a first external electrode extending from the sixth face of the magnetic substance to a section of the first face and connected to the coil; a second external electrode extending from the sixth face of the magnetic substance to a section of the second face and connected to the coil; a first insulating layer covering the first external electrode on the first face of the magnetic substance; and a second insulating layer covering the second external electrode on the second face of the magnetic substance.SELECTED DRAWING: Figure 1

To improve a production efficiency of a coil component.SOLUTION: In a power transmission system, a coil component 5 comprises a coil 10 containing first and second flat surface coil elements 11 and 12. Each of the first and second flat surface coil elements has a spiral shape having a plurality of turn parts 111 to 116, and 121 to 123. Each of the first and second flat surface coil elements is arranged opposing to each other in a shaft direction extending on center shaft wires C1 and C2 in this spiral shape. The first and second flat surface coil elements is serially connected to each other. The number of turns of the second flat surface coil element is smaller than the number of turns of the first flat surface coil element. Also, in view of the shaft direction, at least one of the plurality of turn parts of the second flat surface coil element is overlapped to two or more of the plurality of turn parts of the first flat surface coil element. Also, each gap between the plurality of turn parts of the second flat surface coil element in the shaft direction is overlapped with any one of the gaps between the plurality of turn parts of the first flat surface coil element.SELECTED DRAWING: Figure 3

A coil component includes a body including a first surface and a second surface opposing each other in a first direction, and a third surface and a fourth surface opposing each other in a second direction, perpendicular to the first direction, a coil including a winding portion disposed in the body, and a lead-out portion extending from an end of the winding portion onto the body, and an external electrode disposed on the body, the external electrode having an internal surface facing the body and an external surface opposing the internal surface. The external electrode includes at least one protrusion portion protruding from the internal surface toward the body, and the lead-out portion is in contact with the internal surface of the external electrode.

The invention relates to a superparamagnetic (SPM) transducer comprising: - a rigid body (10) having a longitudinal central axis (X) and two planar surfaces (101, 102) at each of the opposite ends of the body (10) in the direction of the longitudinal central axis (X), the two planar surfaces (101, 102) being substantially perpendicular to the longitudinal central axis (X); - at least one support channel (103) formed in the body (10) and accommodating a SPM coil (2), the support channel (103) extending parallel to the longitudinal central axis (X) and being open to the two planar surfaces (101, 102), the SPM coil (2) being formed by a core based on a SPM material around which at least one electrical conductor is wound. Furthermore, a feedback winding (3) is formed by an electrical conductor along the longitudinal central axis (X) and wound on an outer surface of the body (10).

For a receiving surface coil for detecting nuclear magnetic resonance signals from a patient, a solution for an easy adaptation of the receiving surface coil to the anatomy of the patient is disclosed. This is achieved by a receiving surface coil for detecting nuclear magnetic resonance signals from a patient, the receiving surface coil comprising: a flexible housing with an opening, a set of RF loop elements housed in the flexible housing, wherein the set of RF loops comprises at least a central loop element running around the opening in the flexible housing and a number of loop elements arranged around the opening.

The utility model relates to the technical field of coil, concretely provides a kind of plane coil, comprising: insulating substrate, structural glue and coil.Wherein, structural glue is set to one surface of insulating substrate, or, opposite two surfaces;Coil is set to the groove of the side surface of structural glue away from the insulating substrate;Wherein, the depth-width ratio of coil is greater than or equal to 2.5:1.The plane coil provided by the utility model can improve the depth-width ratio of plane coil, further can improve the current carrying capacity, inductance and magnetic flux of coil, provides a disruptive solution for miniaturized electronic system.

According to the current measurement method and system of the novel non-closed-loop strong-disturbance-rejection current sensor, information of a magnetic field generated by the measured current and information of a disturbance magnetic field are obtained at the same time on the basis of surface coils in different space directions and algorithms, the waveform of the measured current is deduced in combination with coil parameters and installation positions, high-frequency current is rapidly measured with high precision, and the measurement accuracy is high. The problem that a closed-loop structure sensor is not easy to use is solved. The device is small in size, space-saving, simple in structure, convenient to mount and high in universality; the device can be used for measuring PCB wiring without punching and power-off installation, is used for measuring a scene where a current sensor with a closed framework is not easy to install, and has important significance for measuring high-frequency current of PCB wiring and current of a wire fixed on a wall. According to the invention, the problems of circuit invasion and insufficient bandwidth of the existing shunt resistor and Hall device measurement method are overcome; the device has the advantages of simple structure, high measurement precision and strong anti-interference capability, is more suitable for measuring high-frequency current, and can be easily installed in PCB wiring or an integrated circuit to realize on-line measurement.

The utility model provides intelligent equipment. The intelligent equipment comprises a machine body, a magnetic attraction charging assembly, a camera assembly, a voice assembly and a host. The magnetic attraction charging assembly comprises a magnetic suction cup and a coil structure, the magnetic suction cup is arranged on the outer surface of the machine body, the coil structure is installed in the machine body, and the magnetic attraction charging assembly is used for being connected with mobile equipment and charging the mobile equipment. The camera shooting assembly is installed on the fuselage, partially exposed out of the outer surface of the fuselage and used for obtaining external image information. And the voice assembly is mounted on the machine body and is used for receiving and playing the audio information. The host is arranged in the machine body and electrically connected with the coil structure, the camera shooting assembly and the voice assembly. Thus, the intelligent device can identify and interact with the surrounding environment and the user through the camera shooting assembly and the voice assembly, the intelligent interaction requirement of the user is met, an external mobile device can be connected with the machine body through the magnetic attraction charging assembly, a charging function is provided for the mobile device, function expansion of the device is achieved, and the user experience is improved. And diversified requirements of users are met.

A stator mechanism for a magnetic levitation motor and a stator coil. The stator mechanism includes a stator coil and a stator core. The stator core includes a stator yoke and at least one pair of stator teeth (31). Each of the stator teeth (31) includes a vertical section (311) contacted with the stator yoke and a transverse section (312) at a predetermined angle with the vertical section (311). The stator coil includes an insulating framework (1) and a coil (4). The insulating framework (1) includes an insulating body (11) disposed on an outer surface of the vertical section (311). The insulating body (11) has a first end and a second end opposite to each other in a first extending direction. The first end is provided with a first baffle (12), and the second end is provided with a second baffle (17). The insulating body (11) has a first main surface (111) and a second main surface (112) opposite to each other. The second main surface (112) is a cambered surface protruding outwards away from the first main surface (111). The coil (4) is transversely wound on the first main surface (111) and the second main surface (112) and tightly attached thereto. When a cross-section of the wound coils is of specific shape, coils can be stacked to a maximum density in a limited space.

The invention provides a magnetic resonance multi-core imaging coil assembly, a magnetic resonance imaging device and a method, the magnetic resonance multi-core imaging coil assembly comprises a multi-core transmit-receive surface coil and a hydrogen core induction surface coil, the multi-core transmit-receive surface coil is configured to transmit and receive radio frequency signals of at least one non-hydrogen nuclide, and the hydrogen core induction surface coil is configured to receive the radio frequency signals of at least one non-hydrogen nuclide. The hydrogen nuclear induction surface coil is a passive coil, and the hydrogen nuclear induction surface coil is configured to transmit a received hydrogen nuclear magnetic resonance signal to a receiving port of a hydrogen nuclear volume radio frequency coil of magnetic resonance equipment in a magnetic induction coupling mode. According to the magnetic resonance multi-core imaging coil assembly and the magnetic resonance imaging equipment, the hydrogen core induction surface coil is arranged and can receive magnetic resonance signals of the hydrogen core of the measured object, the distance between the hydrogen core induction surface coil and the measured object is small, mutual interference between the hydrogen core induction surface coil and the multi-core receiving and transmitting surface coil is controllable, and the magnetic resonance imaging efficiency is improved. Therefore, the transmission efficiency can be ensured, and the signal-to-noise ratio is improved.

In some embodiments, the present disclosure relates to a radio frequency (RF) surface coil for a magnetic resonance imaging (MRI) system. The RF surface coil includes a rigid lower member, at least one flexible upper member mechanically coupled to the rigid lower member, and one or more RF coil elements housed by the rigid lower member and the at least one flexible upper member. The at least one flexible upper member is dimensioned and manipulable to substantially conform the one or more RF coil elements to a portion of a patient anatomy to be imaged by the MRI system.

The present disclosure provides surface coils and magnetic resonance devices. The surface coil may include: a radio frequency coil, a transmission line, and a preamplifier. The radio frequency coil may include at least one coil unit, the at least one coil unit receiving a magnetic resonance signal. One end of the transmission line may be connected to the radio frequency coil, another end of the transmission line may extend out of the radio frequency coil and may be connected to the preamplifier, and the transmission line may be configured to perform impedance transformations between the radio frequency coil and the preamplifier and transmit the magnetic resonance signal received by the radio frequency coil to the preamplifier. The preamplifier may receive and amplify the magnetic resonance signal received by the radio frequency coil.

The invention provides a coil assembly. The coil component includes: a body including a first surface and a second surface opposite to each other in a first direction, and a third surface and a fourth surface connected to the first surface and the second surface and opposite to each other in a second direction; a coil disposed in the main body; an external electrode disposed on the main body and connected to the coil; and a first heat dissipation portion disposed on the first surface, in which the main body includes a groove disposed in a region between the first heat dissipation portion and the external electrode.

The invention discloses a magnetic resonance radio frequency coil for improving magnetic field uniformity, and relates to the technical field of magnetic resonance imaging. According to the magnetic resonance radio frequency coil for improving the magnetic field uniformity, the semicircular copper ring structures loaded at the two ends of the base coil are optimally designed, surface current distribution can be effectively dispersed, and uneven magnetic field distribution caused by the fact that current is concentrated near an excitation source is avoided. Due to the addition of the special semicircular structure, the equivalent capacitance values at the two ends of the coil are increased. The charges are gathered on the semicircular structure to form a current loop, and a more uniform magnetic field and an electric field can be excited. The design method provided by the invention can effectively improve the defect of non-uniform magnetic field distribution of the surface coil, has high receiving sensitivity, and improves the imaging definition.

The utility model discloses a double-tuning surface coil device which comprises a shell, the shell is arranged to be of a T-shaped structure, one face of the shell is arranged to be a flat and straight face, the other face of the shell is arranged to be a step face, and a first annular coil and a second annular coil are arranged in the shell. The second annular coil is sleeved in the first annular coil; the coil device is reasonable in structural design and convenient to use, due to the design of the T-shaped shell, the coil device is small and portable, coil imaging at any local position can be met, coupling between mutual inductance and self-inductance in the coil can be maximized due to the double-ring coplanar coil layout, the coupling effect of the coil is enhanced, and the coupling effect of the coil is improved. And meanwhile, cross coupling between the coils can be reduced.

The invention discloses a three-phase four-column magnetic integrated inversion inductor which comprises a bottom plate, a magnetic core structure and a coil assembly, the magnetic core structure is installed on the surface of one side of the bottom plate, and the coil assembly is wound around the magnetic core structure; the magnetic core structure comprises a plurality of magnet yokes and a plurality of magnetic columns, the plurality of magnet yokes are respectively parallel to a preset plane, and the plurality of magnet yokes are stacked and arranged along a preset direction; the adjacent magnet yokes are connected through a plurality of magnetic columns; the coil group comprises a plurality of inductance coils, and the plurality of inductance coils are wound on the plurality of magnetic columns in a one-to-one correspondence manner; the three-phase four-column magnetic integration inversion inductor further comprises a fastening assembly, and the fastening assembly is arranged on the bottom plate and connected with the magnetic core structure so as to achieve stable connection between the magnetic core structure and the bottom plate. The plurality of magnetic columns of the three-phase four-column magnetic integration inversion inductor realize magnetic integration through the corresponding magnetic yokes, and an integral magnetic core structure is obtained, so that the installation space occupied by the inductor in an inverter is greatly reduced.

The present disclosure provides a coil electronic component, which may include a main body, the first surface and the second surface are opposite to each other in a first direction; the third surface and the fourth surface are opposite to each other in a second direction and are connected with the first surface and the second surface; the third surface and the fourth surface are opposite to each other in a third direction and are connected with the first surface and the second surface; the third surface and the fourth surface are a fifth surface and a sixth surface; a coil embedded in the main body; a first external electrode disposed on the sixth surface and extending onto a portion of the first surface and connected to the coil; a second external electrode disposed on the sixth surface and extending onto a portion of the second surface and connected to the coil; a first insulating layer covering the first external electrode on the first surface; and a second insulating layer covering the second external electrode on the second surface.

The invention relates to a camera module and an optical apparatus. In one aspect, a camera module includes: a base; a housing spaced apart from the base; a bobbin movably coupled to the housing; a lens coupled to the bobbin; a coil and a magnet configured to move the bobbin in an optical axis direction; a shape memory alloy member configured to move the housing relative to the base in a direction perpendicular to the optical axis direction; a second substrate electrically connected to the coil; and an elastic member electrically connecting the second substrate and the coil. The coil frame includes first to fourth side surfaces, the coil is disposed on the coil frame, the coil includes a first coil and a second coil, the magnet includes a first magnet facing the first coil and a second magnet facing the second coil, and the shape memory alloy member includes first to fourth shape memory alloy wires, the first through fourth side surfaces are provided at positions corresponding to the first through fourth side surfaces of the bobbin, respectively.

The provided is a signal saturation method for achieving spatial selection under a non-uniform field, and a medium. The method includes: setting a corresponding magnetization preparation module based on a distance between a target saturation region and a surface coil under a non-uniform field (S1); transmitting, by the surface coil, a first main pulse sequence, or sequentially transmitting a first magnetization preparation module and a first main pulse sequence, to acquire a first echo signal, and storing the first echo signal as a first dataset (S2); sequentially transmitting, by the surface coil, a second magnetization preparation module and a second main pulse sequence to acquire a second echo signal, and storing the second echo signal as a second dataset (S3); and processing the first dataset and the second dataset to saturate a signal in the target saturation region, thereby achieving spatial selection (S4).

The utility model belongs to the technical field of electromagnetic valve assembling, and discloses a coil terminal assembling tool which is used for assisting in assembling a terminal and a coil, the coil terminal assembling tool comprises a terminal fixing assembly, a coil fixing assembly and a driving piece, the terminal fixing assembly comprises a first fixing piece and a fixing structure arranged on the first fixing piece, and the coil fixing assembly comprises a second fixing piece and a coil fixing structure arranged on the second fixing piece. The fixing structure is used for fixing the body of the terminal, so that the plugging part of the terminal protrudes out of the surface of the fixing structure; the coil fixing assembly comprises a second fixing piece and a positioning rod arranged on the second fixing piece, the second fixing piece and the first fixing piece are oppositely arranged, the coil can be arranged on the positioning rod in a sleeving mode, and the second fixing piece is further provided with a limiting structure used for preventing the coil from rotating around the positioning rod so that the inserting opening can directly face the inserting portion; the output end of the driving piece is in transmission connection with the second fixing piece so as to drive the coil fixing assembly to get close to or away from the first fixing piece. The second fixing piece can abut against the first fixing piece so as to limit the inserting depth of the inserting part and the inserting opening.

To provide a coil component capable of realizing an effective power transmission.SOLUTION: A coil component 10 according to an embodiment, comprises: a first flat surface coil 11; a second flat surface coil 12; a holding body 30; and at least one of coated layers 21 to 23. The first flat surface coil 11 includes: a first surface 11a; and a second surface 11b that is opposite to the first surface 11a. The second flat surface coil 12 includes a third surface 12a that is directed to the side of the second surface 11b and a fourth surface 12b to the side opposite to the third surface 12a. The holding body 30 contains a magnetic body. The holding body 30 holds the first flat surface coil 11 and the second flat surface coil 12. At least one of the coated layers 21 to 23 contains a magnetic body. At least one of the coated layers 21 to 23 is contacted to the first surface 11a, the second surface 11b, and / or the third surface 12a. A volume ratio of the magnetic body in the coated layers 21 to 23 is 60% or larger. A thickness of the coated layers 21 to 23 is 0.1 mm or less.SELECTED DRAWING: Figure 2

This transformer chip comprises: a first insulation transformer including a first surface coil and a second surface coil that are arranged apart from each other in a first direction that is orthogonal to a thickness direction, and a first rear surface coil and a second rear surface coil that are arranged opposite to the first surface coil and the second surface coil; a second insulation transformer including a third surface coil and a fourth surface coil, and a third rear surface coil and a fourth rear surface coil that are arranged opposite to the third surface coil and the fourth surface coil; first dummy wiring provided on both sides of the first insulation transformer in a second direction that is orthogonal to the thickness direction and the first direction; and second dummy wiring provided on both sides of the second insulation transformer in the second direction and electrically insulated from the first dummy wiring. The first dummy wiring and the second dummy wiring are aligned in the first direction.