24 results about "Surface coil" patented technology

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.

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).

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.

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.

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 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.

The physiological motion sensing apparatus for a magnetic resonance system includes: a sensor module, positioned relative to an examined subject of the magnetic resonance system. The sensor module is configured to sense the motion of the examined subject to generate a sense signal and transmit the sense signal to a processor of the magnetic resonance system via a wireless medium. A power supply module is configured to supply power to the sensor module; and a shielding housing that forms a shielded space. The power supply module is provided in the shielded space.

This disclosure provides a coil assembly comprising: 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 perpendicular to the first direction; a coil disposed in the body; and an external electrode disposed in the body and connected to the coil, the external electrode comprising: a base portion disposed on the first surface or the second surface; an insertion portion bent from the base portion and at least a portion of the insertion portion disposed in the body; and an extension portion bent from the base portion and extending to the third surface and the fourth surface, respectively.

This disclosure provides a coil assembly comprising: a body having a first surface and a second surface opposed to each other in a first direction, a first side surface and a second side surface opposed to each other in a second direction, and a third side surface connecting the first side surface and the second side surface to each other; a coil disposed in the body, the coil including a lead extending to the third side surface of the body; an external electrode disposed on the third side surface of the body, the external electrode including a connection portion connected to the lead; and a first insulating layer disposed on a portion of the third side surface of the body where the connection portion is not disposed, the first insulating layer exposing the connection portion. The distance between the connection portion of the external electrode and the first side surface of the body is different from the distance between the connection portion of the external electrode and the second side surface of the body.

A coil assembly and a method of forming the same are provided. The coil assembly includes a main body having first and second surfaces facing each other in a first direction and third through sixth surfaces connecting the first and second surfaces, a coil disposed in the main body and including a lead-out portion, and an external electrode including a base portion disposed on the third and fourth surfaces, an insertion portion bent from one end of the base portion and having at least a portion thereof inserted into the main body, and a pad portion bent from the other end of the base portion and extending to the first surface, wherein each of the third through sixth surfaces includes first and second inclined surfaces inclined in different directions with respect to the first direction, and the insertion portion includes one surface facing the first surface and another surface facing the second surface, and the lead-out portion contacts the one surface of the insertion portion.

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

The invention provides a coil assembly. The coil component includes a body having a first surface, a second surface opposite the first surface in a first direction, and a plurality of side surfaces connecting the first surface to the second surface. A coil is disposed in the body, and first and second external electrodes each including a first metal layer electrically connected to the coil and disposed on a side surface of the body are disposed. A first insulating layer is disposed on the side surface of the body covering at least a portion of the first metal layer. A surface roughness Ry is formed on at least a portion of a surface of the first metal layer in contact with the first insulating layer, where the surface roughness Ry is defined as a maximum height roughness having an average value of 1 [mu] m or more, enhancing adhesion between the first metal layer and the first insulating layer.

The present disclosure provides a coil component including: 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 perpendicular to the first direction; the coil comprises a winding part arranged in the main body and a leading-out part extending to the main body from the end part of the winding part; and an external electrode disposed on the main body, the external electrode having an inner surface facing the main body and an outer surface opposite the inner surface. The external electrode includes a protruding portion protruding toward the main body, and the lead-out portion is in contact with the inner surface of the external electrode.

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 coil assembly. The coil component includes: a body including first and second surfaces facing each other in a first direction and third and fourth surfaces facing each other in a second direction and each having a recess formed thereon; a coil disposed within the main body and having both ends extending to the recess of the third surface and the recess of the fourth surface, respectively; external electrodes disposed on the first surface of the main body and extending to the recesses of the third surface and the fourth surface, respectively, to be connected to the both ends of the coil, respectively; a first insulating layer disposed on the first surface of the body and having a first opening formed therein; and a second insulating layer disposed on the first insulating layer and having a second opening formed therein, in which a portion of the external electrode is disposed in the first opening and the second opening.

The invention relates to a coil constant adjustable cylindrical surface coil design method, which comprises the following steps: setting a target area in the center of a cylinder, and determining that any point on a cylindrical surface generates a magnetic field in the target area; taking the non-uniformity of the magnetic field and a difference value between a coil constant and a set coil constant in the optimization process as optimization targets, calculating the optimization targets according to a coil parameter combination obtained by a multi-target optimization algorithm, determining coil parameters to be optimized, and obtaining an actual coil winding according to the coil parameters; the method is matched with magnetometer correction and comprises the steps that a base is arranged, a three-axis coil is installed in a base groove, a positioning column is arranged on the plane of the base, and a three-axis magnetometer tool is combined for positioning the magnetometer in the space. According to the invention, extremely-high-uniformity reference fields with different intensities can be generated, the correction requirements of different magnetometers in various application scenes are met, and accurate correction independent of an extremely-high-precision current source is realized in combination with a scalar correction method.

A coil component includes a body including a first surface and a second surface, facing each other in a first direction, and a third surface and a fourth surface, facing each other in a second direction, perpendicular to the first direction; a coil disposed in the body; and an external electrode disposed in the body and connected to the coil, the external electrode may include a base portion disposed on the first surface or the second surface, an insertion portion bent from the base portion and at least a portion of which is disposed in the body, and an extension portion bent from the base portion and respectively extending to the third surface and the fourth surface.