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This page is updated frequently with new Magnetic Field-related patent applications. Subscribe to the Magnetic Field RSS feed to automatically get the update: related Magnetic RSS feeds. RSS updates for this page: Magnetic Field RSS RSS

Distributed location sensor

Pet/mr scanners for simultaneous pet and mr imaging

Magnetic field measurement apparatus

Date/App# patent app List of recent Magnetic Field-related patents
 Near-surface object sensing device and sensing method patent thumbnailNear-surface object sensing device and sensing method
Disclosed is a near-surface object sensing device, including a printed circuit board, a plurality of magnetic sensors arrayed on the printed circuit board to sense the magnetic field of an external magnetic object and generate a magnetic sensing signal, a multiplexer connected to the magnetic sensors for selecting and outputting the magnetic sensing signal, and a microprocessor connected to the multiplexer for receiving the magnetic sensing signal, wherein the microprocessor includes a sampling algorithm module for converting the magnetic sensing signal into a magnetic field distribution image, and a six-dimensional coordinate-calculating module for calculating six-dimensional coordinates of the external magnetic object. The sensing device of the invention is compact, low energy consuming and can accurately provide users with a convenient and intuitive user interface with three dimensional locations and position information in a near-surface space..
 Distributed location sensor patent thumbnailDistributed location sensor
A catheter configured for use with a magnetic field-based localization system includes a distributed location sensor that includes a plurality of individual location sensing coils electrically connected in series. The distributed location sensor has an effective magnetic center based on the individual characteristics of each location sensing coil.
 Pet/mr scanners for simultaneous pet and mr imaging patent thumbnailPet/mr scanners for simultaneous pet and mr imaging
In a combined system, a magnetic resonance (mr) scanner includes a magnet configured to generate a static magnetic field at least in a mr examination region from which mr data are acquired. Radiation detectors are configured to detect gamma rays generated by positron-electron annihilation events in a positron emission tomography (pet) examination region.
 Magnetic field measurement apparatus patent thumbnailMagnetic field measurement apparatus
A magnetic field measurement apparatus includes a probe beam irradiating unit that radiates a probe beam. A gas cell is arranged on an optical axis of the probe beam and shows a linear dichroism with respect to the probe beam between a first axis and a second axis.
 System and method for detecting tissue surface properties patent thumbnailSystem and method for detecting tissue surface properties
A system and method for detecting a tissue property. The system comprises a first unit positioned outside a patient body and a second unit positioned inside the patient's body.
 Exfoliating foot covering that covers toes patent thumbnailExfoliating foot covering that covers toes
A sock has an inner material or surface that causes skin on portions of the human foot, which are covered by the sock, to be exfoliated while the sock is worn. Massaging elements and/or magnetic elements on the sock causes the human foot to be massaged and/or be subjected to a magnetic field, respectively when the sock is worn.
 Etching method of multilayer film patent thumbnailEtching method of multilayer film
In an etching method of a multilayer film including a first oxide film and a second oxide film, a high frequency power in etching an organic film is set to be higher than those in etching a first and second oxide films, and high frequency bias powers in the etching of the first and second oxide films are set to be higher than that in the etching of the organic film. In the etching of the first and second oxide films and the organic film, a magnetic field is generated such that horizontal magnetic field components in a radial direction with respect to a central axis line of a target object have an intensity distribution having a peak value at a position far from the central axis line, and a position of the peak value in the etching of the organic film is closer to the central axis line..
 Electromagnetically actuated droplet microfluidic chip and system patent thumbnailElectromagnetically actuated droplet microfluidic chip and system
A microfluidic system includes a microfluidic cartridge and an electromagnetic droplet actuator arranged proximate the microfluidic cartridge. The microfluidic cartridge includes a plurality of droplet wells with topological barrier structures between adjacent wells.
 Impeller position compensation using field oriented control patent thumbnailImpeller position compensation using field oriented control
A centrifugal pump system having an impeller rotating with first and second magnetic structures on opposite surfaces. A levitation magnetic structure is disposed at a first end of a pump housing having a levitating magnetic field for axially attracting the first magnetic structure.
 Apparatus for initializing perpendicular mram device patent thumbnailApparatus for initializing perpendicular mram device
The present invention is directed to an apparatus for initializing perpendicular magnetic tunnel junction. The apparatus comprises a permanent magnet for generating a magnetic flux; a flux concentrator made of a soft ferromagnetic material and having a base area in contact with the permanent magnet and an tip area that is smaller than the base area, thereby funneling and concentrating the magnetic flux to the tip area for emitting a magnetic field therefrom; and a means for supporting and conveying a substrate with an arrays of magnetic tunnel junctions formed therein to traverse the magnetic field in close proximity to the tip area.
Magnetically movable objects over a display of an electronic device
In one implementation, the present disclosure provides a method for imparting motion to a magnetically movable object. The method includes disposing the magnetically movable object over a display of an electronic device.
Cards, devices, electromagnetic field generators and methods of manufacturing electromagnetic field generators
A powered card and/or a communication device (e.g., mobile phone) may include one or more electromagnetic field generators. An electromagnetic field generator may include bonding pads, bonding wires and/or connection pads, connected as an eccentric coil.
Cloaked electromagnetic field sensor
A cloaked field sensor apparatus and system using a cloaking barrier sheath to substantially enclose the surface of a transmitter conduit exposed to an electromagnetic field being measured to reduce the field sensor's interference with the electromagnetic field being measured. Multiple cloaked field sensor apparatuses may be aligned in an array and use identical or different cloaking barrier sheaths..
Motor assembly comprising a brushless dc motor with control electronics
A motor assembly (101), comprising a brushless dc motor (102) with control electronics (103) which comprises at least two magnetic field sensors adapted to measure magnetic flux from magnetic poles on a rotor in the brushless dc motor (102). The magnetic field sensors are adapted to determine an angular position of the rotor, with the purpose of controlling the current to the brushless dc motor based on the determined angular position.
Apparatus for magnetic and electrostatic confinement of plasma
An apparatus and method for containing plasma and forming a field reversed configuration (frc) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the frc. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field.
Magnetic coupling
A rotatable magnetic coupler includes disc carrying, circumferentially spaced magnets arranged in rows on a first side of the disc. The magnets are oriented such that one pole of a first magnetic polarity from each magnet faces outwardly from the disc rotation axis while the other pole of a second magnetic polarity for each magnet faces inwardly toward the axis of rotation.
Compact positioning assembly comprising an actuator and a sensor built into the yoke of the actuator
A positioning assembly includes a position sensor and a magnetic actuator, the actuator including a stator assembly formed of at least one ferromagnetic stator bearing at least one electric power supply coil and a yoke able to move relative to the stator assembly, the actuator having a geometry that is of revolution or periodic about an axis referred to as the main axis passing through the yoke, the sensor having at least one permanent magnet secured to the yoke and at least one magneto-sensitive probe that is fixed in relation to the magnet and able to measure the amplitude or direction of the magnetic field emitted by the magnet. The yoke has an interior recess including the main axis of the actuator, and the magnet is positioned inside the recess and secured to the yoke..
Wireless power repeater and method thereof
Disclosed is a wireless power transmission apparatus to wirelessly transmit power to a wireless power receiving apparatus by using resonance. The wireless power transmission apparatus includes a transmission part including a transmission coil to receive the power from a power supply to generate a magnetic field, a transmission resonance coil to transmit power received therein from the transmission coil, and a plurality of repeating coils placed in the transmission resonance coil to repeat the power, a detection part to detect a position of the wireless power receiving apparatus placed on the transmission part, and a controller to determine a repeating coil corresponding to the position of the wireless power receiving apparatus and perform a control operation to transmit power through the repeating coil..
Method and apparatus for separation of mixture
Provided are a mixture separation method and a separation apparatus in which processes are performed efficiently in a short time compared to conventional methods with a low load on the apparatus configuration compared to conventional methods. The present invention is a mixture separation method or a mixture separation apparatus for separating, by applying a gradient magnetic field to a paramagnetic supporting liquid containing a mixture of first particles and second particles, the mixture by particle type.
Fuel magnetization treatment method
A fuel magnetization treatment method includes mounting electromagnetic coils on a supply system through which fuel is supplied to a combustion device of an engine (7), connecting two joints of the electromagnetic coils with an electromagnetic generating device, and providing alternating current to the electromagnetic coils through the electromagnetic generating device so that an alternating current magnetic field is generated by the electromagnetic coils and is used to magnetize the fuel in the engine, where the frequency zone of the alternating current is 4 khz˜25 khz. The method can improve the combustion efficiency of various fuels, enhance the power output performance of the engine, inhibit the emission of various pollution gases and prolong the life of engine lubricating oil..
Mitigated-force carriage for high magnetic field environments
A carriage for high magnetic field environments includes a plurality of work-piece separators disposed in an operable relationship with a work-piece processing magnet having a magnetic field strength of at least 1 tesla for supporting and separating a plurality of work-pieces by a preselected, essentially equal spacing, so that, as a first work-piece is inserted into the magnetic field, a second work-piece is simultaneously withdrawn from the magnetic field, so that an attractive magnetic force imparted on the first work-piece offsets a resistive magnetic force imparted on the second work-piece.. .
Damping arrangement for dissipating oscillating energy of an element in a system, more particularly in a microlithographic projection exposure apparatus
The invention relates to a damping arrangement for dissipating oscillation energy of an element in a system, more particularly in a microlithographic projection exposure apparatus, comprising an absorber mass, which is mounted via a stable mounting with respect to the element, wherein the absorber mass is arranged in a cavity present within the element and is at least partly surrounded by a fluid situated in the cavity, wherein a mass-spring system is formed by the absorber mass, the system damping a translational movement component of an oscillation of the element that exists at the linking point of the absorber mass, and wherein the stable mounting is formed by a rheological fluid that is electrically controllable or controllable via electric or magnetic fields.. .
Vibration generator moving vibrator by magnetic field generated by coil and vibrator-mounted holder used in vibration-generator
A vibrator-mounted holder is attached to a casing of a vibration generator which moves a vibrator to generate a vibration when used. The vibrator-mounted holder includes a vibrator, a vibrator retention unit retaining the vibrator, a fixing unit fixed to a casing, and an arm.
Longitudinal alignment of microwires
A method of aligning microwires includes modifying the microwires so they are more responsive to a magnetic field. The method also includes using a magnetic field so as to magnetically align the microwires.
Geomagnetic sensor calibration apparatus and method thereof
A geomagnetic sensor calibration apparatus includes a geomagnetic sensor which measures at least one value of earth's magnetic field, an initial point estimator which estimates first central points regarding the at least one value of the earth's magnetic field by using a first linear function, a central point estimator which estimates second central points by using a second linear function and the estimated first central points, and a controller which determines whether calibrating of the geomagnetic sensor is necessary based on the estimated first central points and controls the central point estimator to estimate second central points based on whether calibration is determined to be necessary.. .
Method and apparatus for tissue ablation
Devices and methods for tissue ablation include injecting a conductive medium into a target tissue and then delivering an ablative agent to the conductive medium to ablate the target tissue. Optionally, the contents of the target tissue are removed using the ablation device prior to injection of the conductive medium.
Wireless chemical sensor and sensing method for use therewith
A wireless chemical sensor includes an electrical conductor and a material separated therefrom by an electric insulator. The electrical conductor is an unconnected open-circuit shaped for storage of an electric field and a magnetic field.
Magnetic platforms for biomolecule trappings, manipulations, and sorting
A magnetic platform is provided and includes a patterned array of discrete magnetic elements positioned on a substrate, a plurality of first electromagnets for creating a first magnetic field substantially in the plane of the substrate, an electromagnetic coil for creating a second magnetic field substantially perpendicular to the plane of the substrate, and a control device for controlling the application of the magnetic fields. Processes for manipulating, transporting, separating and sorting micro- or nano-scale particles and biomolecules are also described..
Dental implantation system and method using magnetic sensors
Provided herein, inter alia, is a system for indicating the location of a dental drill includes a dental handpiece, which further includes the dental drill. A plurality of sensors detect a magnetic field and produce a set of outputs, which are usable at least in part to indicate the location of the dental drill.
Printed circuit board and magnetic field or current sensor
A printed circuit has a creep suppressor and a stack of metallization layers separated by electrically insulating layers. A metallization layer arranged above the insulating layer at least partially covers a cavity formed in the latter's top face.
Magnetic recording head, magnetic head assembly, magnetic recording apparatus, and magnetic recording method
An example magnetic recording apparatus includes a magnetic recording medium and a magnetic recording head. The magnetic recording head includes a first magnetic pole to apply a recording magnetic field to a magnetic recording medium, a spin torque oscillator provided parallel to the first magnetic pole, a first coil which surrounds the first magnetic pole, to magnetize the first magnetic pole, and a second coil to pass a current independently of the first coil and magnetize the first magnetic pole.
Reflective line source
There is provided a reflective line source for an antenna system. The reflective line source comprises at least one region adapted to receive an electromagnetic field and to expand the field in at least one dimension.
Operator control device
An operator control device has an operating element with haptic feedback. The operating element has a touch-sensitive operator control area and is operated through an input element.
Inductor design with metal dummy features
Techniques are disclosed for enhancing performance of integrated or on-chip inductors by implementing a schema of conductive metal dummies in the design thereof. In some cases, a metal dummy schema may be disposed in a layer proximate an upper surface of the inductor.
Rare-earth permanent magnet and method for manufacturing rare-earth permanent magnet
There are provided a rare-earth permanent magnet and a manufacturing method of a rare-earth permanent magnet capable of improving magnetic properties by optimizing magnetic field orientation. In the method, magnet material is milled into magnet powder.
Determination of specific absorption rate (sar) in magnetic resonance imaging (mri)
A magnetic resonance imaging (mri) system includes static and gradient magnetic field generators, at least one radio frequency (rf) coil, at least one rf transmitter and at least one rf receiver. At least one power consumption monitor is coupled to locally measure power consumed by the rf coil.
Radio frequency (rf) coil device, magnetic resonance apparatus employing the rf coil device, and method of operating the rf coil device
A radio frequency (rf) coil device includes a plurality of rf coil elements configured to generate an rf magnetic field, and a support member configured to support the plurality of rf coil elements so that at least one of the plurality of rf coil elements is movable.. .
Absorbtion-based detection of spin impurities in solid-state spin systems
Absorption based detection of spin states of spin impurities within a solid-state spin system, such as nv centers in diamond, is implemented by measuring the absorption intensity of an optical signal applied to the spin impurities, i.e. Change in intensity of the optical signal after the signal has been transmitted through the solid-state spin system.
Dual purpose atomic device for realizing atomic frequency standard and magnetic field measurement
A dual purpose atomic device (dad) for realizing atomic frequency standard and/or magnetic field measurement based on a hybrid technique comprising of enhanced transmission and polarization rotation by the cpt states is invented. The dual purpose atomic device for realizing atomic frequency standard and/or magnetic field measurement basically involving means for generating bi-chromatic field to facilitate the creation of cpt state in an atomic cell and stabilizing the frequency difference among the said bi-chromatic field to the center of the cpt resonance and thereby realizing atomic frequency standard and/or means for monitoring and analyzing transmitted polarization rotation signal from the cpt enabled atomic gas in a sample cell for measuring magnetic field without scanning the radiofrequency oscillator..
Arrangement for crack detection in metallic materials in a metal making process
An arrangement for a metal making process for detecting cracks along a strip of a metallic material moving in relation to the arrangement. The arrangement includes a coil arrangement fixedly arranged during crack inspection, having: a first winding portion extending in a first direction for inducing a first current in the first direction; a second winding portion extending in a second direction for inducing a second current in the second direction, the first direction and the second direction intersecting each other; a first receiver coil arranged to detect a magnetic field generated by the first current; and a second receiver coil arranged to detect a magnetic field generated by the second current, the magnetic field generated by the first current and the magnetic field generated by the second current providing a measure of whether a crack is present in the portion of the strip..
Motor unit
A rotation detector of a motor according to an embodiment includes a first support and a second support, a pair of magnetic field forming units, at least one magnetic field detector, and a first magnetic member and a second magnetic member. The first magnetic member and the second magnetic member are each made of a magnetic material, cover longitudinal-direction both ends of the magnetic field detector facing the first support, respectively, and face each other with a gap interposed therebetween at a longitudinal-direction mid-portion of the magnetic field detector in the longitudinal direction.
Circuit and measuring system
A measuring system having a first magnetic field sensor, a second magnetic field sensor, an encoder, and an evaluation circuit to which the first magnetic field sensor and the second magnetic field sensor are connected. The evaluation circuit generates a first signal and a second measurement signal.
Measuring system
A measuring system having a first magnetic field sensor, a second magnetic field sensor, a third magnetic field sensor, an encoder, and an evaluation circuit to which the first magnetic field sensor, the second magnetic field sensor, and the third magnetic field sensor are connected. The evaluation circuit is configured to determine the position of the encoder based on a first measurement signal of the first magnetic field sensor and a second measurement signal of the second magnetic field sensor and a third measurement signal of the third magnetic field sensor..
Measuring system
A measuring system having a first magnetic field sensor, an encoder, and an evaluation circuit. The first magnetic field sensor and the second magnetic field sensor and the third magnetic field sensor are connected to the encoder.
Method for positioning based on magnetic field characteristics and system thereof
A system for positioning based on magnetic field characteristics includes a system apparatus and a client device. The system apparatus includes a characteristic magnetic field generation device, a magnetic field characteristic database and a processing device.
Position measurement using a variable flux collector
A magnetically-based position sensor. The sensor includes a magnet assembly that moves along a path, a common collector, one or more magnetic sensing elements, a first variable collector, and a second variable collector.
Current probe, current probe measurement system, and current probe measurement method
Provided is a current probe which reduces, in current measurement, a measurement error due to an unnecessary magnetic field generated from a subject not to be measured, said subject being adjacent to a subject to be measured. The current probe is characterized in having: a sensor that detects a magnetic field; a transmission path connected to the sensor; and a pair of conductive members, which protrude toward the front from a leading edge portion of the sensor, and are provided to face the sensor.
Electronically commutated electric motor comprising rotor position detection with interference field compensation
An electronically commutated electric motor includes a stator and a rotor formed as a permanent magnet. A control unit is connected to the stator and configured to energize the stator to produce a rotating magnetic field.
Spin rotation device
A spin device includes: a first condenser lens which focuses a spin polarized electron beam discharged from an electron gun or reflected on a sample; a spin rotator which includes a multipole having a point to which the electron beam is focused by the first condenser lens at a lens center or in the vicinity of the lens center and being capable of generating an electric field and a magnetic field; a wien condition generating means which applies a voltage and a current which satisfy the wien condition for rotating spin of the electron beam by a designated angle and making the electron beam advance straightly to the multipole which constitutes the spin rotator; and a second condenser lens which focuses the electron beam whose spin is rotated by the spin rotator.. .
Apparatus and method for multiplexed multiple discharge plasma produced sources
An apparatus for producing euv light, including: a plate with pluralities of through-bores; at least one power system; and a plurality of discharge plasma devices disposed in the through-bores. Each device includes: a respective plasma electrode forming at least part of a respective plasma-producing region; a respective magnetic core embedded in the plate and aligned with the respective plasma electrode in a radial direction and configured to create a respective magnetic field within the respective plasma-producing region; and a respective feed system arranged to supply an ionizable material to the respective plasma-producing region.
Magnetic field for sintering conductive material with nanoparticles
Conductive particle sintering systems including a conveyor for conveying a low-temperature substrate with a conductive ink having metallic nanomaterial on the substrate, the conveyor for conveying the substrate along a first direction; and at least one source of alternating magnetic field configured to provide sufficient energy to the conductive ink to cause the nanomaterial in the ink to be sintered; such that the at least one source of magnetic field is positioned above and/or below the substrate and oriented in a second direction substantially perpendicular to the first direction. Also disclosed are methods using such sintering systems..
Vacuum sealer with a retractable heater bar
Systems (200) and methods (1300) for selectively retracting a first component of a vacuum packaging appliance (“vpa”). The method comprises: causing the first component to normally be in an engaged position in which the component facilitates a formation of a heat seal along an open end of a container disposed within the vpa; detecting an existence of at least one first condition associated with the vpa; and applying a magnetic field in proximity to the component when the first condition is detected, whereby the first component is at least maintained in an unengaged position in which the first component no longer facilitates the formation of the heat seal..
Dynamically self-adjusting magnetometer
A dynamically self-adjusting magnetometer is disclosed. In one embodiment, a first sample module periodically generates an electronic signal related to at least one magnetic field characteristic of a monitored environment.
Wheel speed sensor with support for indirect tire pressure monitoring
The present disclosure relate to an indirect tire pressure monitoring system (tpms). In some embodiments, the indirect tpms has magnetic field sensor that detects a modulated magnetic field indicative of one or more resonance parameters of an automobile tire.
Ultrasound transducer direction control
Disclosed are embodiments of devices and methods for imaging the inside of a body part, such as a blood vessel. In particular embodiments, a catheter has a chamber within which is a transducer mounted to a pivot mechanism, a motor for turning the transducer, and a coil for providing a pivot force to the transducer.
Patient positioning system with an electromagnetic field generator of an electromagnetic tracking system
It also relates to a method for navigating a patient or a part of the patient's body by means of a medical navigation system using an electromagnetic tracking system, wherein the patient or part of the patient's body is positioned by such a patient positioning system (10).. .
Apparatus and method for non-invasive measurement of cardiac output
A comparatively light and compact permanent magnet arrangement for an mri apparatus has a pair of opposed permanent magnet arrays with a shimming system to adjust the uniformity and strength of a magnetic field in a central chamber of the apparatus. The mri apparatus is used to examine the extremities of a patient to determine cardiovascular characteristics from an analysis of the blood flow through selected arteries in the extremity.
Systems and methods for sensing external magnetic fields in implantable medical devices
Systems and methods for sensing external magnetic fields in implantable medical devices are provided. One aspect of this disclosure relates to an apparatus for sensing magnetic fields.
Portable therapeutic device using rotating static magnetic fields
The present invention provides a portable therapeutic device for treatment of dyslipidemia, hyperviscosaemia, diabetic neuropathy, and peripheral artery disease, using rotating static magnetic fields (rsmf). The device comprises a two part plastic housing with a handle and a designated treatment area, a dc motor with microcontroller and a cylindrically shaped magnet roller, which comprises magnets tightly fitted into a stainless steel sleeve capped with two bearing shafts protruded on each end.
Metamaterial optical elements self-assembled on protein scaffolds
A genetically modified cowpea mosaic virus (cpmv) protein capsid serves as a scaffold for metal nanoparticles, preferably gold nanospheres, of 15 nm to 35 nm, creating plasmonic nanoclusters. The self-assembled nanoclusters gave rise to a 10-fold surface-averaged enhancement of the local electromagnetic field.
Bead manipulation techniques
The invention provides a method of redistributing magnetically responsive beads in a droplet. The method may include providing a droplet including magnetically responsive beads.
Method and apparatus for selecting multi-antenna transmission mode in electronic device
A method for selecting a multi-antenna transmission mode of an electronic device is provided. The method includes determining, by using a detection signal from a sensor, whether there is a contact with a human body, changing a second transmission mode to a first transmission mode when there is a contact with a human body that affects the electromagnetic field around an antenna, and transmitting the same data stream through at least two antennas according to the first transmission mode..
Color rewritable storage
A chromatic data storage system includes a substrate. The substrate includes nanoparticles operable to emit light frequencies (e.g.
Voice coil motor and driving method thereof
A voice coil motor (vcm) is disclosed, the vcm including: a stator including a magnet generating a first electromagnetic field; a mover including a bobbin formed with a hollow hole through which light passes and a coil formed on a periphery of the bobbin that generates a second electromagnetic field responsive to the first electromagnetic field; a base fixed at the stator and formed with an opening through which the light passes; and at least one elastic member elastically supporting the bobbin and forming a gap between the bobbin and the base when the coil is not applied with a current.. .
Mechanized area controller
Mechanized area controller systems and methods for coordinating the movement of workers and vehicles to improve safety are disclosed. Some embodiments of the methods include generating a magnetic field defining a first zone and detecting a response signal from a first device.
Transmission line phase shifter
Embodiments disclosed include transmission line phase shifters and methods for fabricating transmission line phase shifters that switch signal and ground conductors to reverse electromagnetic fields in a transmission line structure.. .
Device and method for monitoring the state of a system component
In order to detect the current state of a system component, e.g. To display whether an electrical conductor, a cable or the like, is currently live, a field generator that generates a magnetic field in the environment of the system part is provided, which generator is connected to an organic magnetoresistive omr semiconductor element that is arranged stationary in the environment of the system component to be monitored, and a voltage source for generating an electrical voltage between two electrodes of the omr semiconductor element is provided.
Fiberoptic systems and methods for subsurface em field monitoring
A disclosed subsurface electromagnetic field monitoring system employs at least one fiberoptic cable to optically communicate measurements from an array of electromagnetic field sensors in a borehole. A data processing system that receives the measurements and responsively models the subsurface electromagnetic field, which in at least some cases is generated by a controlled source such as a downhole electric or magnetic dipole source or a casing that serves as an electrode for injecting a distributed current into the formation.
Method and apparatus for suppression of the airwave in subsea exploration
The far zone “airwave” that arises when surveying subsea formations is greatly diminished by deployment of the transmitter combining mutually orthogonal horizontal electric and magnetic dipoles with the electric and magnetic dipole moments being locked in a special relationship. At each of the operating frequencies, the amplitude and phase characteristics of the transmitter electric and magnetic dipole moments are determined either from a supplementary measurement earned out using natural and/or controlled field sources, or by minimization of the vertical magnetic field at a remote receiver.
Multi-frequency locating systems and methods
Multi-frequency buried object location system transmitters and locators are disclosed. A transmitter may generate and provide output signals to a buried object at a plurality of frequencies, which may be selected based on a connection type.
Magnetic testing method and apparatus
A magnetic testing apparatus comprises a first magnetizing device for applying a dc bias magnetic field to a test object p in substantially parallel to the direction in which a flaw f to be detected extends, a second magnetizing device for applying an ac magnetic field to the test object p substantially perpendicularly to the direction in which the flaw f to be detected extends, and a detecting device for detecting leakage flux produced by the magnetization of the test object p accomplished by the first and second magnetizing devices.. .
Measuring system
A measuring system is provided that includes a magnetic field sensor array, an evaluation circuit for evaluating measurement signals of the magnetic field sensor array, and a rotatable encoder that has a mass element to change a magnetic field vector in the magnetic field sensor array. The encoder has a spring element in which the mass element is attached to the spring element.
Method for detecting an electrically conductive foreign body and device for inductively transmitting electrical energy
In a method for detecting an electrically conductive foreign body at a device for inductively transmitting electrical energy from a stationary unit having an electrical power supply unit and a primary inductor to a mobile unit having a secondary inductor and an electric load, electrical power is initially fed from the electrical power supply unit into the primary inductor and the feed-in is interrupted. The curve over time of the resulting decay of an electrical operating variable of the primary inductor is measured and at least one parameter of the measured curve is compared with a corresponding parameter of a reference curve in the event of an interruption of the power feed-in into the primary inductor without the presence of an electrically conductive foreign body.
Magnetic load sensor for use in a linear motion actuator, and a linear motion actuator
A magnetic load sensor unit (1) is provided which can detect the magnitude of an axial load applied by a linear motion actuator (14) to a friction pad (22). The magnetic load sensor unit (1) includes a magnetic target (4) which generates a magnetic field, and a magnetic sensor (5) designed to move relative to the magnetic target (4) corresponding to the axial load..
Device and control system for producing electrical power
Briefly, the invention involves a system and method for generating electrical power. The system includes an electromagnet positioned with one pole directed toward a like pole of a permanent magnet.
Solenoid valve assembly for a seat of a vehicle
The present invention provides for a solenoid valve assembly including a housing (32) defining a cavity (34). A support (48) is disposed in the cavity and defines a bore (50).
Catalytic etch with magnetic direction control
A material can be locally etched with arbitrary changes in the direction of the etch. A ferromagnetic-material-including catalytic particle is employed to etch the material.
Cmos transistors, fin field-effect transistors and fabrication methods thereof
A method is provided for fabricating a transistor. The method includes providing a semiconductor substrate; and configuring a channel region along a first direction.
Fiberoptic systems and methods for formation monitoring
A disclosed formation monitoring system includes a casing that defines an annular space within a borehole. An array of electromagnetic field sensors is positioned in the annular space and configured to communicate with the surface via a fiberoptic cable.

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Magnetic Field topics: Magnetic Field, Transverse, Magnetic Separator, Homogeneous, Photovoltaic Cell, Semiconductor, Compliance, Anisotropy, Crystallin, Electrical Machine, Wireless Power, Transmitter, Radial Direction, Eddy Currents, Calibration

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