26 results about "Micro coil" patented technology

Tracking a pose of a portion of an anatomical structure using an inverted-direction electromagnetic navigation system may comprise generating a signal comprising a plurality of frequencies. The signal comprising the plurality of frequencies may be received at a transmitter coil array. The transmitter coil array comprises a plurality of transmitting micro coils. Each of the plurality of transmitting micro coils is coupled to a portion of an anatomical structure of a patient. In response to receiving the signal comprising the plurality of frequencies, an electromagnetic field may be generated at each of the plurality of transmitting micro coils based on the received signal. Each of the generated electromagnetic fields may be detected at a receiver coil array comprising at least one receiving coil. A pose of at least one of the plurality of transmitting micro coils may then be determined.

The present application relates to a kind of micro nuclear magnetic resonance probe and nucleic acid, antibody nuclear magnetic resonance detection method.Micro nuclear magnetic resonance probe includes the parallel arrangement of first plane shimming coil, nuclear magnetic resonance micro coil chip, digital microfluidic chip and second plane shimming coil in sequence, digital microfluidic chip is single pole plate form, the microstrip of medium substrate on nuclear magnetic resonance micro coil chip is annular microstrip coil, nuclear magnetic resonance micro coil chip and digital microfluidic chip are spaced apart.There is beneficial effect: through digital microfluidic chip control droplet, with simple structure, easy integration advantage;Annular microstrip coil can generate a uniform B1 field that matches the shape of droplet, can improve the filling factor of trace sample droplet;Nucleic acid, antibody modified magnetic particle probe can enhance nuclear magnetic resonance detection sensitivity, by quantitative analysis the change amount of relaxation time and the concentration of target detection substance, nucleic acid, antibody quantitative detection can be realized.

This invention discloses a high-precision dual-mass silicon micro-gyroscope device based on the tunneling magnetoresistive effect. The device comprises two layers: an upper layer is a silicon sensing structure, and a lower layer is a glass substrate structure with metal electrodes and a tunneling magnetoresistive detection module. The upper structure is bonded to the lower structure via anchor points. The upper structure consists of two identical gyroscope substructures, a pair of support beams, and a pair of anchor points. The lower structure consists of a tunneling magnetoresistive detection module, a glass substrate, driving electrodes, driving and detection electrodes, quadrature electrodes, a coil input interface, a coil input electrode, a coil output interface, a coil output electrode, a common electrode, and signal leads. This invention proposes a silicon micro-gyroscope using a miniature coil as the excitation mechanism, resulting in a stable magnetic field, controllable field strength, and high integration. Simultaneously, the use of a differential tunneling magnetoresistive detection structure provides advantages such as strong anti-common-mode error capability, high sensitivity, and high measurement accuracy.

The utility model relates to a miniature loudspeaker, comprising an induction chip which is manufactured through a semiconductor manufacturing process and is connected with a vibrating diaphragm; the control chip is manufactured through a semiconductor manufacturing process and is electrically connected with the sensing chip; a gap for the sensing chip to bear the vibration diaphragm to move is formed between the magnetic element and the sensing chip; wherein the control chip is used for receiving an electrical signal, the polarity of the electrical signal is changed and input to the sensing chip so as to form a variable magnetic field on the sensing chip, a force for driving the vibrating diaphragm to move is formed between the magnetic element and the sensing chip, and the moving vibrating diaphragm generates sound waves output by the miniature loudspeaker. An induction chip formed by a micro coil element is manufactured through a semiconductor manufacturing process, and the purpose of microminiaturization of the loudspeaker is achieved.

The invention belongs to the technical field of radioactive element detection, and discloses a radioactive element content detection method and system and application, and the detection method comprises the following steps: carrying out quantum state initialization on a diamond nitrogen vacancy color center; converting gamma ray radiation of the to-be-detected sample into an optical signal; converting and amplifying the optical signal and driving a micro coil to obtain an electromagnetic signal; receiving the electric signal through the diamond nitrogen vacancy color center, and outputting a response light signal; converting the response optical signal into a response electric signal; and calculating to obtain the radioactive element content of the to-be-detected sample. According to the method, the detection lower limit of a traditional method is broken through by utilizing the high sensitivity characteristic of quantum sensing, and the content detection of trace radioactive elements is realized; gamma ray radiation is converted and amplified into electric signals which can be received by a diamond nitrogen vacancy color center, so that the coupling difficulty of quantum sensing and radioactive element signals is solved; and a novel high-sensitivity detection means is provided for the fields of environmental safety, food safety and nuclear emergency.

The application belongs to the technical field of magnetic suspension motor, and discloses a magnetic suspension fan motor winding temperature monitoring device and a warning method; the method comprises the following steps: laminating a preset temperature-sensitive ferromagnetic material and a magnetic suspension fan motor stator core according to a preset process to obtain a composite core; deploying a high-frequency excitation system on the composite core, adjusting the number of turns of the micro coil of the high-frequency excitation system according to a target magnetic field intensity, collecting real-time excitation current, and analyzing to obtain magnetic induction intensity; analyzing the magnetic induction intensity through multi-physical field coupling iteration to obtain a winding three-dimensional temperature field; performing temperature gradient analysis on the three-dimensional temperature field, performing temperature warning according to the analysis result, and dynamically adjusting motor operating parameters; the application effectively improves the comprehensiveness of magnetic suspension fan motor winding temperature monitoring, the timeliness of warning and the accuracy of cooling control, and guarantees the safe and stable operation of the motor under complex working conditions.

The application belongs to the technical field of planar motor and provides a magnetic field adjusting method for magnetic suspension planar motor. The magnetic suspension planar motor comprises a mover assembly and a stator assembly. The mover assembly comprises a mover top plate, a controller cabin, an adjustable magnetic array layer and a mover bottom plate connected from top to bottom. The adjustable magnetic array layer comprises a permanent magnet array and a magnetic field reconstruction unit. The permanent magnet array is composed of multiple permanent magnet subarray units. The magnetic field reconstruction unit is arranged in the magnetic pole gap of the permanent magnet array. Each magnetic field reconstruction unit comprises a micro soft magnetic core and a micro coil wound on the micro soft magnetic core. The controller cabin is provided with a mover controller for receiving instructions and controlling the current of the micro coil. The method is adjusted by controlling the magnetic field reconstruction unit. The application solves the problem of poor utilization of magnetic leakage field caused by the physical gap between the mover permanent magnets in the planar motor.

Tracking a pose of a portion of an anatomical structure using a bi-directional electromagnetic navigation system may include generating a signal comprising a plurality of frequencies. The signal may be received at a bi-directional coil array that comprises a plurality of bi-directional micro coils configured to both generate electromagnetic fields and detect electromagnetic fields generated by neighboring bi-directional micro coils. Each of the plurality of bi-directional micro coils may be coupled to a portion of a structure. In response to receiving the signal, an electromagnetic field may be generated at each of the plurality of bi-directional micro coils. At least one of the generated electromagnetic fields may be detected at a neighboring bi-directional micro coil of a bi-directional micro coil that is generating the at least one detected electromagnetic field. A pose of the bi-directional micro coil that is generating the at least one detected electromagnetic field may be determined.

The application discloses a multi-coil differential driving variable stiffness magnetic guide wire, which comprises an interventional guide wire body and an external control system, wherein the interventional guide wire body is composed of a super-elastic nickel-titanium alloy inner core, a polyimide insulating flexible isolation layer, a micro coil array and a common ground line topology flexible wire; the external control system is composed of an external magnetic field generating system, a main control console, an electrical control system and a medical image system DSA; the electrical control system comprises an MCU microcontroller, a high-frequency PWM signal generator, an H-bridge driving circuit and a programmable constant current source; the external magnetic field generating system comprises a six-degree-of-freedom mechanical arm and an end cylindrical neodymium iron boron permanent magnet, the six-degree-of-freedom mechanical arm is freely movable in the three-dimensional space of the operating bed area, so as to adjust the position and posture of the end cylindrical neodymium iron boron permanent magnet; the end cylindrical neodymium iron boron permanent magnet is used for generating a global space magnetic field with adjustable direction and gradient in the target blood vessel area, and provides a magnetic coupling external field for the guide wire coil; and a corresponding control method is also disclosed.

The embodiment of the utility model provides a miniature coil framework convenient for automatic winding, which comprises an insulating bottom plate, a through hole is formed in the center of the insulating bottom plate, copper columns are respectively arranged at the front end and the rear end of the insulating bottom plate, and folding parts are respectively arranged on the left side and the right side of the insulating bottom plate; insulating wrapping posts are arranged on the two folding parts, and copper needles are coaxially embedded in the insulating wrapping posts; the folding part is flexibly connected with the insulating bottom plate, so that the folding part can be folded back and forth relative to the insulating bottom plate so as to be switched back and forth between a folding position and an unfolding position; during winding, the folding part can be folded to the folding position, so that the two insulating winding posts deviate from each other, and the winding machine can automatically wind and arrange wires.

The application provides a method and device for improving the sensitivity and signal-to-noise ratio of in-situ electrochemical nuclear magnetic resonance, and relates to the field of in-situ electrochemical nuclear magnetic resonance. The method comprises the following steps: designing an electrochemical nuclear magnetic resonance in-situ cell according to the coil of an in-situ electrochemical nuclear magnetic resonance probe; the electrochemical nuclear magnetic resonance in-situ cell is externally attached with a micro coil and a micro capacitor; the sensitivity and spectral signal-to-noise ratio of the in-situ electrochemical nuclear magnetic resonance probe are improved through inductive coupling between the micro coil and the micro capacitor and the coil of the in-situ electrochemical nuclear magnetic resonance probe. The device comprises: an electrochemical nuclear magnetic resonance in-situ cell assembly, a micro coil and a micro capacitor; the micro coil and the micro capacitor are fixedly bonded to the outer wall of a shell, and the micro coil and the micro capacitor are connected through a welded copper wire. The in-situ spectral signal-to-noise ratio and the sensitivity of the probe are improved through the micro coil coupling nuclear magnetic resonance in-situ cell integration scheme.

The present application relates to a kind of in-situ calibration method of coil constant of micro three-dimensional magnetic compensation coil.The coil constant of micro coil is equivalently characterized based on the idea of volume average magnetic field, and the coil constant of micro coil is calibrated reversely using large coil whose coil constant has been calibrated, which effectively improves the precision of coil constant calibration of micro coil, thereby solving the problem that coil constant cannot be calibrated using traditional fluxgate magnetometer due to the micro volume (≤1cm 3 ) of micro coil and its easy bending deformation. The method is reasonable, and the experimental operation is simple. The coil constant of micro coil can be calibrated after its assembly, which effectively improves the accuracy of magnetic field measurement of single atomic magnetometer and the consistency of magnetic field measurement among multiple probes of array atomic magnetometer, and plays a great role in promoting the development of atomic magnetometer.

The invention belongs to the technical field of winding machines, and particularly relates to a semi-automatic winding machine for a micro coil, which comprises a machine table, and an electronic screen is mounted at the top of the machine table; the moving mechanism is mounted at the top of the machine table; the inner wall of the feeding mechanism is in threaded connection with the outer wall of the moving mechanism; the winding mechanism is installed at the top of the machine table, and the inner wall of the winding mechanism is connected with the outer wall of the moving mechanism in a clamped mode. By arranging the feeding mechanism, a sliding block moves up and down on a fixing frame in the winding process of a metal wire, the tightness degree of the metal wire can be preliminarily adjusted, then surface cleaning is conducted through a wiping assembly, and the metal wire can be conveniently cleaned; the bent part of the metal wire is straightened, the metal wire is wound in a straightened state, knotting or loosening of the metal wire in the winding process can be reduced, the limiting assembly assists in adjustment of the tension of the metal wire, and the situation that the metal wire is too tight to be broken, and the winding efficiency is affected is avoided.

The invention is suitable for the technical field of planar motors, and provides a magnetic field adjusting method of a magnetic suspension planar motor. The magnetic suspension planar motor comprises a rotor assembly and a stator assembly. The rotor assembly comprises a rotor top plate, a controller cabin, an adjustable magnetic array layer and a rotor bottom plate which are connected from top to bottom. The adjustable magnetic array layer comprises a permanent magnet array and a magnetic field reconstruction unit, and the permanent magnet array is formed by arranging a plurality of permanent magnet sub-array units; the magnetic field reconstruction units are arranged in magnetic pole gaps of the permanent magnet array, and each magnetic field reconstruction unit comprises a miniature soft magnetic core and a miniature coil wound on the miniature soft magnetic core; a rotor controller used for receiving an instruction and controlling the current of the micro coil is arranged in the controller cabin; the method is adjusted by controlling the magnetic field reconstruction unit. According to the invention, the problem of poor magnetic flux leakage magnetic field utilization rate caused by physical gaps between rotor permanent magnets in a planar motor is solved.

The invention discloses a server data synchronization method and system, and relates to the technical field of data processing. A sliding piece is fixedly arranged on the side wall in the server cabinet body; the sliding piece is specifically composed of a sliding groove and a sliding block sliding on the sliding groove, the sliding block is fixedly installed at the bottom of the server, data are summarized in a wired and wireless mode, the data modification frequency is dynamically evaluated through an intelligent algorithm, and therefore the synchronization interval is adjusted in a self-adaptive mode, and the resource utilization rate is optimized while the data timeliness is guaranteed; afterwards, data is converted and transmitted through a high-reliability optical waveguide, and an electromagnetic array and a micro coil are innovatively adopted to carry out macroscopic displacement and micron-order precision focusing on an optical path, so that a highly stable dynamic optical signal channel is realized, and the whole process from intelligent data processing to stable and high-speed synchronous transmission is realized.

The application discloses a single-drive electromagnetic micro-gripper, which comprises a fixed side plate, an FPC coil arranged in the fixed side plate, the FPC coil comprising a plurality of planar coils, and a first clamping arm arranged at one end of the fixed side plate; a movable side plate connected to the fixed side plate and arranged opposite to the fixed side plate, a permanent magnet arranged in the movable side plate, and a second clamping arm arranged at one end of the movable side plate; when the FPC coil is electrified, the FPC coil generates a magnetic field and exerts a force on the permanent magnet, the permanent magnet and the movable side plate move together, and the second clamping arm is driven to move towards or away from the first clamping arm. The FPC coil is made by FPC technology, is a planar micro coil, has small size and good reliability, is convenient to assemble in the fixed side plate to control the overall volume of the gripper, can effectively reduce the size of the micro gripper while providing sufficient driving force, realizes miniaturization of the electromagnetic micro gripper, has high displacement precision, can achieve fast response, and improves the accuracy, stability and rapidity of clamping.

The utility model discloses a non-contact UART (Universal Asynchronous Receiver / Transmitter) communication device, which relates to the field of shared charging and comprises a transmitting end and a receiving end. The transmitting terminal comprises a first microprocessor used for generating a UART signal and outputting the UART signal to a coil driving unit; the coil driving unit is used for driving current change based on the UART signal after receiving the UART signal and outputting the current change to the micro coil; compared with the prior art, the utility model has the beneficial effects that non-contact UART (Universal Asynchronous Receiver / Transmitter) communication is realized by utilizing the micro coil (transmitting end) and the switch-type Hall device (receiving end), and transmission data is modulated and demodulated through a magnetic field, so that physical contact abrasion is avoided, and the service life of equipment is prolonged; compared with wireless communication schemes such as Bluetooth, WiFi and the like, the cost of the micro coil and the Hall device is far lower than that of a Bluetooth module and a WiFi module; the method is directly compatible with a standard UART protocol, and the existing charge pal main control logic does not need to be modified

The invention provides a multifunctional tool for winding a miniature coil. The multifunctional tool comprises a mandrel, the core shaft is sleeved with a starting end fixing mechanism and a tail end fixing mechanism, and a coil frame connected to the core shaft in a sleeving mode is arranged between the starting end fixing mechanism and the tail end fixing mechanism. The starting end fixing mechanism is provided with an enameled wire protective film fixing reed and a protective film, and the enameled wire protective film fixing reed, the protective film and the coil rack are matched with one another to work; one end of the mandrel is a threaded section, and a flat gasket and a nut are sequentially arranged on the threaded section; one end of the initial end fixing mechanism is provided with a pressure spring sleeved on the mandrel, and the pressure spring is adjacent to the flat gasket; the head and tail end fixing mechanism comprises a wire pressing block and a wire positioning block, and the wire positioning block of the head and tail end fixing mechanism is connected with the coil rack. According to the invention, the leading-out wire and the coil rack are combined together, multiple functions of micro coil winding, pin winding and varnished wire starting end protection on a winding machine are realized, and convenient conditions are provided for realizing automation of subsequent processes.

This invention discloses a back EMF detection circuit for a brushless motor controller used in automotive cooling fans, relating to the field of motor technology. Key technical features include a stator with a rotor rotatably connected to its center. A circuit board is mounted on the top of the stator, and a miniature coil is mounted on the circuit board. A lubrication device is rotatably connected to the center of the rotor. The circuit board also integrates a back EMF detection circuit, which includes a signal sampling unit, a filtering and shaping unit, and a comparison and judgment unit connected in sequence. The miniature coil is electrically connected to the output of the back EMF detection circuit. When the comparison and judgment unit detects a back EMF signal indicating that the rotor is in an inertial rotation or driven by airflow, it triggers the miniature coil to operate. This invention accurately identifies recoverable kinetic energy states through the back EMF detection circuit, converting the mechanical energy of wind-driven or inertial rotation into control signals to drive the lubrication, heat dissipation, and dust removal systems in synergy.

The present invention discloses a magnetic compensation system structure for a miniature atomic inertial device, comprising: a Y-axis microcoil pair, a Z-axis microcoil pair, an X-axis microcoil pair, a support and limit base, and a printed circuit board. The X-axis and Z-axis microcoil pairs are perpendicular to the printed circuit board, while the Y-axis microcoil pair is parallel to the printed circuit board. The microcoil pairs for the X, Y, and Z axes are nested and orthogonal to each other and placed on the support and limit base to generate a magnetic field to compensate for static residual magnetism and magnetic field disturbances. The support and limit base is located on the printed circuit board, accommodating an air chamber and providing positional support for the three-axis microcoil pairs. The printed circuit board is located at the bottom layer of the structure and provides peripheral electrical connections and current transmission for the three-axis coil pairs. Compared to the traditional miniaturization method of proportionally reducing PCB coils, the present invention provides an effective structural solution with the advantages of higher processing accuracy, lower cost, and higher positioning and alignment accuracy.

The invention discloses aluminum profile surface burr trimming equipment, relates to the technical field of aluminum profile machining, and aims to solve the technical problems that in the prior art, a rigid structure is adopted, grinding equipment is difficult to dynamically adjust, and various curvature requirements are difficult to cover. Through the design of the deburring assembly, when the deburring assembly is in an initial state, the first grinding cover is in a plane shape and is matched with the plane for grinding; in the first deformation state, the first polishing cover is in a convex spherical surface shape and is matched with the concave spherical surface groove; and in the second deformation state, the current of the micro coil is adjusted, the micro coil drives the first memory metal strip to rotate through the magnetic block, the first memory metal strip is electrified to deform and bend, and therefore the first polishing cover is pulled by rotating the connecting block to form a concave spherical surface to be matched with the convex spherical surface block. Through the design of the deburring assembly, a plane, a convex spherical surface and a concave spherical surface can be effectively ground through a deformation structure, so that the grinding effect on the heat dissipation fins is improved.

The application discloses an aluminum profile surface burr finishing device and relates to the technical field of aluminum profile processing, aiming to solve the technical problem that it is difficult to dynamically adjust the polishing device and cover various curvature requirements by using a rigid structure in the current technology, and the aluminum profile surface burr finishing device comprises a deburring assembly. Through the design of the deburring assembly, the first polishing cover is in a plane in the initial state of the deburring assembly, and the plane is adapted for polishing; the first polishing cover is in a convex spherical surface in the first deformation state, and the convex spherical surface is adapted for a concave spherical groove; in the second deformation state, the current of the micro coil is adjusted, the micro coil drives the first memory metal strip to rotate through the magnetic block, the first memory metal strip is deformed and bent after being electrified, and the first polishing cover is pulled to form a concave spherical surface through the rotating connecting block, thereby adapting to the convex spherical block. Through the design of the deburring assembly, the plane, the convex spherical surface and the concave spherical surface can be effectively polished by the deformation structure, and thus the polishing effect on the heat dissipation fins is improved.

Tracking a pose of a portion of an anatomical structure using an electromagnetic navigation system may comprise generating a signal. The generated signal is configured to cause bi-directional micro coils of a bi-directional coil array to generate an electromagnetic field at each bi-directional micro coil in response to receiving the generated signal. Each of the bi-directional micro coils is also coupled to a portion of a tracked structure. At least one of the generated electromagnetic fields is configured to be detected by at least one neighboring bi-directional micro coil and at least one receiving coil of a receiving coil array. A pose of a particular bi-directional micro coil of the bi-directional micro coils associated with the at least one generated magnetic field is determined based on detecting the at least one generated magnetic field at the at least one neighboring bi-directional micro coil and the at least one receiving coil.

This invention discloses a high-speed motor speed detection method based on MEMS microcoils, relating to the field of high-speed motor speed detection. The method includes: non-contactly placing at least one MEMS microcoil sensor at a key electromagnetic field coupling position on the high-speed motor body or drive circuit; the MEMS microcoil sensor outputting a raw induced voltage signal; conditioning the raw induced voltage signal; using an analog-to-digital converter to perform high-speed synchronous sampling of the conditioned signal to obtain a digital signal sequence; extracting the speed characteristic frequency; calculating the real-time motor speed based on the speed characteristic frequency and preset motor parameters through a preset mapping relationship, and outputting the calculation result. This invention employs a miniaturized coil sensor based on MEMS technology, combined with intelligent signal processing algorithms, to achieve high-precision, high-response speed measurement in ultra-high-speed scenarios.

This invention discloses a hybrid power supply and intelligent energy consumption scheduling system and method based on photoconductive film. It integrates multiple power supply units, including photoelectric generation, electromagnetic induction, and micro-energy storage batteries, and performs intelligent energy consumption scheduling based on scene priority and real-time user status. The system includes a unified identity authentication center, multiple power supply units, a power supply status monitoring module, a scene priority identification module, an energy consumption scheduling module, a low-power management module, and a power supply redundancy guarantee module. The system loads user-preset personalized scheduling strategies through identity recognition. The photoelectric generation module uses flexible thin-film solar cells with a conversion efficiency of over 15% under standard test conditions; the electromagnetic induction module uses micro-coils; and the energy storage battery uses solid-state thin-film batteries with a capacity of 10-50mAh. Scene priorities are divided into five levels, with high-priority scenes prioritizing stable power supply (energy storage battery) and low-priority scenes prioritizing ambient energy harvesting. The low-power management module automatically enters deep sleep mode when preset low-power conditions are met (including at least one of continuous no user interaction, lowest scene priority, and light intensity below a threshold), reducing power consumption by 95%. In the event of a main power supply unit failure, a backup unit is automatically switched over within 10ms. This invention solves the problems of insufficient power supply to photoconductor films, low efficiency of multi-source power supply coordination, and unreasonable energy consumption distribution. It is the core infrastructure for the intelligent operation of photoconductor films.

The invention discloses a dual-mode magnetic control guide wire based on permanent magnet-electromagnetic hybrid drive. The dual-mode magnetic control guide wire comprises a guide wire (1-2), a permanent magnet (1-1) and a micro coil (1-3), wherein the permanent magnet (1-1) is installed at the head end of the guide wire (1-2), the magnetization direction of the permanent magnet (1-1) is arranged in the axial direction of the guide wire (1-2), the miniature coil (1-3) is installed on the side, opposite to the movement direction of the guide wire (1-2), of the permanent magnet (1-1), and the miniature coil (1-3) is wound by multiple circles of wires. The head end of the guide wire (1-2) is provided with a fixed magnetic moment source and a controllable magnetic moment source at the same time. The invention further discloses application of the dual-mode magnetic control guide wire based on permanent magnet-electromagnetic hybrid drive in interventional medical instruments.