24results about How to "Reduce magnetic interference" patented technology

The utility model relates to an air cylinder device which comprises a cylinder body, a plurality of air cylinders and an air cylinder, a plurality of air cylinders are arranged in the cylinder body at intervals in the first direction, and each air cylinder extends in the second direction intersecting with the first direction; an air inlet hole and an air outlet hole are formed in the cylinder body, the air inlet hole is communicated with each cavity, and the air outlet hole is communicated with each cavity; a plurality of piston rods, wherein one piston rod is arranged in each cavity; the magnetic sensor assembly is arranged on the cylinder body and located on the side, in the first direction, of the multiple cavities. Therefore, on one hand, under the condition that the push-pull force is certain, the width of the cylinder body can be thinned; on the other hand, under the condition that the width is not changed, the push-pull force of the air cylinder device can be multiplied; and on the other hand, the two adjacent air cylinder devices can be reversely installed in a staggered mode, the magnetic interference problem of the adjacent air cylinder devices is reduced to the maximum extent, and the use performance of the air cylinder devices is improved.

The invention provides a low-magnetic-leakage excitation coil design method and device capable of generating a high-uniformity magnetic field, and belongs to the technical field of magnetic field control, and the method comprises the steps: determining the target magnetic induction intensity and the length of a target uniformity region; based on a pre-constructed two-dimensional distribution function of the uniform region length and the central magnetic field intensity, determining the size parameters of the low-magnetic-leakage excitation coil corresponding to the target magnetic induction intensity and the target uniform region length by using an interpolation method or a table look-up method; based on the size parameters and the condition that the magnetic moment of the low-magnetic-leakage excitation coil is zero, the ratio of the number of turns inside and outside the low-magnetic-leakage excitation coil is determined; based on the required target magnetic induction intensity and target uniform region length, the designed low-magnetic-flux-leakage excitation coil enables the system to be in a low-magnetic-flux-leakage state externally, magnetic interference to surrounding equipment is reduced, and the measurement precision is effectively improved.

The invention relates to a bipolar magnetic bar structure of a needle selector. Relates to the technical field of needle selectors. The device specifically comprises a first magnetic bar and a second magnetic bar which are arranged at an interval, a first coil arranged on the first magnetic bar, and a second coil arranged on the second magnetic bar, the first magnetic bar is magnetized to form an N pole, the second magnetic bar is magnetized to form an S pole, the electrified first coil demagnetizes the first magnetic bar, and the electrified second coil demagnetizes the second magnetic bar. The first magnetic bar is magnetized to form an N pole, the second magnetic bar is magnetized to form an S pole, and when the first magnetic bar and the second magnetic bar attract the corresponding spring needles at the same time, the spring needles conduct the first magnetic bar of the N pole and the second magnetic bar of the S pole, so that magnetic induction lines outside the first magnetic bar and the second magnetic bar are spread in the spring needles; therefore, the magnetic field interference with the surrounding magnetic bars can be reduced, the energy loss of magnetic induction lines can be reduced, the accuracy of needle selection is ensured, and the production efficiency is improved.

The invention provides a semiconductor packaging structure and a manufacturing method thereof. The semiconductor packaging structure comprises the components of a substrate which is provided with a first surface and a second surface which are oppositely arranged along the thickness direction of the substrate, the first surface is provided with a groove, the substrate is also internally provided with a first via hole, and the first via hole penetrates through the first surface and the second surface and is located at the side of the groove; the first shielding layer covers the bottom wall and the side wall of the groove; the chip is arranged in the groove, the chip is provided with a pin, and the pin is electrically connected with the first via hole; and the second shielding layer covers at least part of the surface, deviating from the bottom wall of the groove, of the chip. The semiconductor packaging structure is used for achieving the effect of improving magnetic shielding comprehensiveness and storage density.

In the magnetic field detection device capable of detecting the magnetic field along three axial directions, the magnetic interference among the magnetic sensors is reduced. A magnetic field detection device (100) is provided with a support body (10), and magnetic sensors (S1-S3) respectively housed in cutouts (121-123) of the support body (10). The cutout (121) is provided in at least one of the surfaces (11, 14) of the support body (10), the cutout (122) is provided in at least one of the surfaces (12, 15) of the support body (10), and the cutout (123) is provided in at least one of the surfaces (13, 16) of the support body (10). The magnetic sensor (S1) takes the X direction as the magnetic sensing direction, the magnetic sensor (S2) takes the Y direction as the magnetic sensing direction, and the magnetic sensor (S3) takes the Z direction as the magnetic sensing direction.

The application provides a motor, a camera module and an electronic device. The motor comprises a base, a first mover and a second mover. The first mover is used for carrying an optical path folding element, and the second mover is used for carrying a lens group. The motor drives the first mover to rotate relative to the base by a magnetic drive mode to realize optical anti-shake, and drives the second mover to displace relative to the base by the magnetic drive mode to realize optical focusing. The application designs the magnetic pole distribution of a magnetic stone in a magnetic drive structure for driving the first mover and the second mover to move, so as to reduce the interference of the magnetic drive magnetic field of the second mover on the movement of the first mover, thereby improving the stability of optical anti-shake and being beneficial to improving the shooting quality.

A stator coil of a rotating electric machine is formed by a concentric winding method. A stator coil is configured by inserting and connecting hairpin-shaped coil pieces (10, 11, 20, 21, 30, 31) formed from flat wires from one side and the other side in the axial direction. The length of the linear part of the coil piece is half of the axial length of the stator core, a convex shape or a concave shape is formed at the two leg end parts, and the convex part and the concave part are embedded. The coil is composed of three kinds of coil pieces: central coil pieces (10, 11) that connect the slots in the circumferential direction in the vicinity of the radial center of the slots; inner coil pieces (20, 21) that are connected in the circumferential direction so that coil end portions are biased inward in the radial direction than the radial positions of the slots; and outer coil pieces (30, 31) that are connected in the circumferential direction so as to be biased outward in the radial direction. Concentric coil portions formed by connected central coil pieces (10, 11), coil pieces (20, 31), and coil pieces (30, 21) are made to have the same length, so that the resistance values are made to be consistent, and the assemblability is improved.

The invention relates to a needle selector structure. Relates to the technical field of needle selectors. The needle selecting device specifically comprises a needle selecting seat, a plurality of magnetic rod assemblies fixedly installed on the needle selecting seat and a plurality of spring needles arranged above the magnetic rod assemblies, the magnetic rod assemblies are arranged on the needle selecting seat in a staggered mode, and the spring needles correspond to the magnetic rod assemblies one to one; the magnetic bar assembly comprises a first magnetic bar and a second magnetic bar which are arranged at intervals, the top end of the magnetized first magnetic bar is an N pole, and the top end of the magnetized second magnetic bar is an S pole. The top end of the first magnetic bar is N pole after being magnetized, the top end of the second magnetic bar is S pole after being magnetized, the top end of the first magnetic bar and the top end of the second magnetic bar are conducted through the spring needle, magnetic induction lines outside the first magnetic bar and the second magnetic bar are spread in the spring needle, and therefore magnetic field interference with surrounding magnetic bar assemblies can be reduced; and the energy loss of magnetic induction lines can be reduced, so that the needle selection accuracy is ensured, and the production efficiency is improved.

The embodiments of the present invention aim to provide an aperture module and a camera module including the aperture module that can reduce magnetic interference between the AF magnet and the ring magnet. By appropriately adjusting the magnetic pole positions of the AF magnet and the ring magnet, magnetic interference is reduced, making the drive of the aperture module smoother. The correlation between the number of magnetic poles of the AF magnet and the ring magnet can be utilized to ensure the diversity of the number or position of multiple coils, fixed shafts, and rolling components inside the aperture module by increasing the number of magnetic poles of the second magnet. This allows for more free design of the aperture module. Furthermore, two or more position sensors can be asymmetrically arranged according to the coil arrangement to more accurately measure the rotational displacement of the ring magnet. The thrust of the aperture module can also be adjusted by the size, number, and number of turns of the coils.

The invention relates to and discloses a magnetic bar assembly. Relates to the technical field of needle selectors. The device specifically comprises a magnetic bar base, a first magnetic bar, a second magnetic bar, a first coil arranged on the first magnetic bar, a second coil arranged on the second magnetic bar and a permanent magnet arranged between the first magnetic bar and the second magnetic bar, wherein the first magnetic bar and the second magnetic bar are arranged on the magnetic bar base at an interval; the N pole of the permanent magnet is attached to the first magnetic bar, the S pole of the permanent magnet is attached to the second magnetic bar, and the through-flow directions of the first coil and the second coil are opposite. The first magnetic bar, the permanent magnet and the second magnetic bar are regarded as an integral magnet, the first magnetic bar is the N pole of the magnet, the second magnetic bar is the S pole of the magnet, the N pole and the S pole of the magnet are conducted through the spring needle, and magnetic induction lines outside the magnet are spread in the spring needle, so that magnetic field interference between the magnet and surrounding magnetic bars can be reduced, and the magnetic field interference between the magnet and the surrounding magnetic bars can be reduced. And the energy loss of magnetic induction lines can be reduced, so that the needle selection accuracy is ensured, and the production efficiency is improved.

The invention relates to a glove machine capable of avoiding magnetic field interference. Relates to the technical field of glove machines. The device specifically comprises a needle selector and a needle plate assembly arranged above the needle selector, a plurality of magnetic bar assemblies are arranged in the needle selector, a plurality of spring needles in one-to-one correspondence with the magnetic bar assemblies are arranged in the needle plate assembly, each magnetic bar assembly comprises a first magnetic bar and a second magnetic bar which are arranged at intervals, the top end of the first magnetic bar is an N pole after the first magnetic bar is magnetized, and the top end of the second magnetic bar is an N pole after the second magnetic bar is magnetized. And the top end of the magnetized second magnetic bar is S-pole. The top end of the first magnetic bar of the magnetic bar assembly is N pole after being magnetized, the top end of the second magnetic bar is S pole after being magnetized, the top end of the first magnetic bar and the top end of the second magnetic bar are conducted through the spring needle, magnetic induction lines outside the first magnetic bar and the second magnetic bar are spread in the spring needle, and therefore magnetic field interference between the magnetic bar assembly and the surrounding magnetic bar assembly can be reduced; and the energy loss of magnetic induction lines can be reduced, so that the needle selection accuracy is ensured, and the production efficiency is improved.

The invention provides a small-sized fiber-optic gyroscope which comprises a light path part and a photoelectric information processing circuit part, and an integrated module is formed by selecting a mixed component U4 which integrates an FPGA (Field Programmable Gate Array), a D / A (Digital / Analog) conversion function and an A / D (Analog / Digital) conversion function; the optical path part is compactly distributed in the metal shell, and the polarization maintaining optical fiber ring is independently installed in the semi-cylindrical shielding cover adjacent to the metal shell and is isolated from other devices of the optical path part. According to the invention, a hybrid component integrating FPGA, D / A and A / D conversion functions is used for the first time, so that the size of a closed-loop control circuit is greatly reduced. According to the special-shaped small optical path structure designed by the invention, the optical path devices are compactly distributed in the metal shell, and the optical fiber ring is independently mounted in the semi-cylindrical shielding cover and is isolated from other optical devices, so that the magnetic interference of the optical fiber ring to other optical devices is reduced; meanwhile, noise caused by external environment fluctuation is effectively reduced, and the environmental adaptability of the fiber-optic gyroscope is improved.

The present embodiment relates to a lens driving device comprising: a housing; the substrate is arranged in the shell; the retainer is arranged in the shell; a magnet disposed on the holder; a coil interacting with the magnet; and an elastic member connecting the housing and the holder, in which the coil includes a first coil disposed on the substrate and a second coil disposed on an opposite side of the optical axis from the first coil, and the elastic member electrically connects the second coil and the substrate.

The invention discloses a double-shaft winding structure of a needle selector. Relates to the technical field of needle selectors. The winding specifically comprises a first spiral winding and a second spiral winding, the first spiral winding is provided with a first winding shaft, the second spiral winding is provided with a second winding shaft, and at least part of the first winding shaft and at least part of the second winding shaft are arranged in parallel at intervals; the through-flow directions of the first spiral winding and the second spiral winding are opposite, the electrified first spiral winding demagnetizes the first winding shaft, and the electrified second spiral winding demagnetizes the second winding shaft. The top end of the first winding shaft is N pole after the first winding shaft is magnetized, the top end of the first winding shaft is S pole after the first winding shaft is magnetized, and when the first winding shaft and the second winding shaft attract the spring needle, the spring needle conducts the first winding shaft and the second winding shaft, so that magnetic induction lines outside the first winding shaft and the second winding shaft are spread in the spring needle; therefore, the magnetic field interference with the surrounding magnetic bars can be reduced, the energy loss of magnetic induction lines can be reduced, the accuracy of needle selection is ensured, and the production efficiency is improved.

A slip ring assembly (300) includes: at least one first conductor group, and at least one second conductor group. Each first conductor group includes a first conductor (310) and a second conductor (320), and the first conductor (310) and the second conductor (320) are configured as annular structures, respectively. Each second conductor group includes a third conductor (330) and a fourth conductor (340), the third conductor (330) and the fourth conductor (340) are configured as annular structures, respectively. The first conductor (310), the second conductor (320), the third conductor (330) and the fourth conductor (340) are arranged to be apart from each other. A first current having a first phase and a first amplitude is configured to flow through the first conductor (310), a second current having a second phase and a second amplitude is configured to flow through the second conductor (320), a third current having a third phase and a third amplitude is configured to flow through the third conductor (330), and a fourth current having a fourth phase and a fourth amplitude is configured to flow through the fourth conductor (320).

The present invention relates to a lens driving device, a camera module including the lens driving device, and an optical apparatus. Embodiments include a substrate, a housing including first and second side portions facing each other and third and fourth side portions facing each other, a bobbin arranged inside the housing, a first coil arranged on the bobbin, and a magnet arranged in the housing, the substrate including a second coil facing the magnet, the magnet including a first magnet arranged on the first side portion of the housing, a second magnet arranged on the second side portion of the housing, and a third magnet arranged on the third side portion of the housing, the second coil including a first coil unit facing the first magnet, a second coil unit facing the second magnet, and a third coil unit facing the third magnet, the first to third coil units each including a wire having a plurality of turns, and the wire of the third coil unit is narrower in width than the wire of the first coil unit.

The utility model discloses a power supply signal female end connector, which comprises a first power supply module, a telecommunication module, a second power supply module and a positioning module, an inclined connecting section is arranged at one end, connected with a terminal main body part, of a terminal connecting part, and a material digging groove is arranged in the middle of the terminal connecting part. And the material digging groove extends towards the middle part of the terminal connecting part from the inclined connecting section. The arrangement of the anti-back structure can avoid the influence of reverse thrust caused by plug-in on the first power supply terminal and the second power supply terminal, and the anti-back effect is good. The positioning part ensures that the connector can be accurately plugged into an external plug, and the signal transmission is more stable. The width of the terminal connecting part is equal to the width of the terminal main body part, so that the strength of the signal terminal connecting part of the signal terminal is increased, the situation that the signal terminal connecting part is damaged when the signal terminals are inserted in a butt joint mode is avoided, and meanwhile magnetic field interference of the signal terminals on adjacent signal terminals in the signal transmission process is reduced.

The invention relates to a needle selection method of a glove knitting machine. Relates to the technical field of glove machines. The needle selector and the needle plate assembly are provided, a plurality of magnetic bar assemblies are arranged in the needle selector, a plurality of spring needles are arranged in the needle plate assembly, and each magnetic bar assembly comprises a magnetic part and an electrified coil; the target spring needle is attracted through the magnetic part, and a closed magnetic induction line is formed in the magnetic part and the target spring needle; the electrified coil is electrified to demagnetize the magnetic part, so that the magnetic part loosens the adsorbed target spring needle. One end of the magnetic part is the N pole, the other end of the magnetic part is the S pole, when the target spring needle is attracted through magnetic attraction force generated by the magnetic part, the N pole end and the S pole end of the magnetic part are conducted through the target spring needle, and therefore closed magnetic induction lines are formed in the magnetic part and the target spring needle, and magnetic field interference between the magnetic part and the surrounding magnetic rod assembly can be reduced; and the energy loss of magnetic induction lines can be reduced, so that the needle selection accuracy is ensured, and the production efficiency is improved.

The utility model relates to a movable multifunctional support for laboratory equipment, and belongs to the technical field of laboratory equipment supports. A claw-shaped supporting rod is installed at the bottom end of the hydraulic lifting rod, walking wheels are installed at the ends of the claw-shaped supporting rod, positioning suction cups are arranged on the outer sides of the walking wheels in a sliding mode, vacuumizing and pressure relief devices are arranged on the positioning suction cups, and the platen is rotatably installed at the top end of the hydraulic lifting rod. An adjusting fixing ring used for limiting rotation of the platen is arranged at the rotary connecting position of the platen and the hydraulic lifting rod, a sliding groove is adjustably formed in a panel of the platen, and an electromagnetic interference blocking cover is arranged on the periphery of the platen. According to the utility model, the height can be automatically adjusted, the applicability is good, multi-direction and angle operation of an operator is facilitated, the arrangement of the mobile power supply socket is not limited by field conditions, detection is facilitated, and the positioning suckers are slidably arranged on the outer sides of the walking wheels and can freely move up and down; a magnetic field interference blocking cover is installed on the platen to prevent interference of a surrounding magnetic field on equipment, and convenience is provided for detection and analysis.

An embodiment of the present invention aims to provide an aperture module capable of reducing magnetic interference between an AF magnet and a ring magnet by appropriately adjusting magnetic pole positions of the AF magnet and the ring magnet, and a camera module including the aperture module, so that driving of the aperture module is smoother, and the aperture module is more compact. The aperture module can be designed more freely by increasing the number of magnetic poles of the second magnet by using the correlation between the number of magnetic poles of the AF magnet and the number of magnetic poles of the annular magnet to ensure the diversity of the number or positions of the plurality of coils, fixed shafts, and rolling members inside the aperture module. And more than two position sensors can be asymmetrically arranged according to the arrangement of the coils so as to more accurately measure the rotation displacement of the annular magnet, and the thrust of the aperture module can be adjusted through the size, the number and the number of turns of the coils.

The present invention discloses a transformer device for reducing magnetic field interference, comprising an iron core, a first side coil unit, a second side coil unit, a first current transmission line, a second current transmission line and a third current transmission line; the first side coil unit and the second side coil unit are both wound on the iron core; the first side coil unit is connected to the first current transmission line and the second current transmission line; the second current transmission line is connected to the third current transmission line. The first current transmission line comprises a first current conduction section and a first insulating layer, the first insulating layer covers the first current conduction section; the third current transmission line comprises a second current conduction section and a second insulating layer, the second insulating layer covers the second current conduction section, and the second insulating layer contacts the first insulating layer. The present invention can reduce the magnetic field interference generated by the current of the current transmission line outside the coil of the transformer.

The utility model relates to the technical field of drawing tools, in particular to a mechanical drawing device. The drawing board comprises a cabinet, the vertical line direction of a drawing platform on the cabinet serves as the main shaft direction, the drawing board capable of rotating around the axis parallel to the main shaft direction is arranged on the drawing platform, a plurality of connecting rods hinged end to end are arranged on the surface of the drawing platform, and the hinged axis of the connecting rods is parallel to the main shaft direction. A paintbrush assembly is installed on the connecting rods, at least two rotating discs which rotate around the axis parallel to the direction of the main shaft are arranged beside the drawing board, each rotating disc is eccentrically connected with the different connecting rods and drives the connecting rods to swing, and the movement track of the paintbrush assembly over the board face of the drawing board can be changed by adjusting the rotating speeds of the different rotating discs. According to the utility model, flower-growing curves with different styles and petal numbers can be conveniently and diversely drawn.