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With means to create magnetic field to test material

Subclass of:

324 - Electricity: measuring and testing

324200000 - MAGNETIC

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
324239000 Induced voltage-type sensor 152
324234000 Electrically energized nonforce type sensor 55
324229000 Thickness measuring 20
324232000 Plural magnetic fields in material 10
324233000 With phase sensitive element 7
Entries
DocumentTitleDate
20080309329On-Chip Magnetic Sensor Device with Suppressed Cross-Talk - A magnetic sensor device is disclosed for the detection or determination of a magnetic field, such as for example, but not limited to, the presence of magnetic particles (12-18-2008
20130027029SYSTEM AND METHOD FOR INSPECTING A SUBSEA PIPELINE - The present invention is directed to a system and a method for inspecting a subsea pipeline. The method comprises the steps: detecting a defect along the subsea pipeline using a subsea magnetometric tomography method (MTM) module adjacent the subsea pipeline; and determining a position of the subsea MTM module, thereby determining the position of the defect. The method further comprises determining the position of the subsea MTM module relative to a surface vessel; and determining an absolute position of the surface vessel.01-31-2013
20100052666DEVICE AND METHOD FOR MEASURING THE MASS OF A MAGNETIC MATERIAL, AND ANALYSIS APPARATUS INCLUDING SUCH DEVICE - The invention relates to a device for measuring the mass of a magnetic material (03-04-2010
20100164487Method for Ultra-Fast Controlling of a Magnetic Cell and Related Devices - The present invention relates to a device and corresponding method for ultrafast controlling of the magnetization of a magnetic element. A device (07-01-2010
20100060275MAGNETIC SENSOR DEVICE WITH ROBUST SIGNAL PROCESSING - The invention relates to a magnetic sensor device (03-11-2010
20100072991METHOD AND ARRANGEMENT FOR LOCATING MAGNETIC MARKERS IN A REGION OF ACTION - A method and an arrangement for influencing and/or detecting and/or locating magnetic markers in a region of action is disclosed, which method comprises the steps of: generating a magnetic drive field so that the magnetization of the magnetic marker changes, generating a magnetic selection field having a pattern in space of its magnetic field strength providing a magnetic field gradient in the region of action, acquiring a first signal by means of a first receiving probe and acquiring a second signal by means of a second receiving probe, the first receiving probe and the second receiving probe being located at different locations relative to the region of action, the first signal and the second signal depending on the magnetization of the magnetic marker in the drive field and in the selection field and further depending on the location of the magnetic marker, the magnetic selection field having a first magnetic field strength configuration, repeating at least once the acquisition of the first signal and of the second signal in the presence of the selection field having a second magnetic field strength configuration, computing an estimation of the location of the magnetic marker by means of the acquired signals.03-25-2010
20100045280ARRANGEMENT AND METHOD FOR INFLUENCING AND/OR DETECTING MAGNETIC PARTICLES IN A REGION OF ACTION, COIL ARRANGEMENT - An arrangement and a method for influencing and/or detecting magnetic particles in a region of action is disclosed, which arrangement comprises: selection means for generating a magnetic selection field having a pattern in space of its magnetic field strength such that a first sub-zone having a low magnetic field strength and a second sub-zone having a higher magnetic field strength are formed in the region of action, drive means for changing the position in space of the two sub-zones in the region of action by means of a magnetic drive field so that the magnetization of the magnetic particles changes locally, receiving means for acquiring signals, which signals depend on the magnetization in the region of action, which magnetization is influenced by the change in the position in space of the first and second sub-zone, wherein the arrangement comprises a coil arrangement comprising a surrounding coil and a magnetic field generator such that the surrounding coil almost completely surrounds the magnetic field generator.02-25-2010
20100066355PROCESS MEASURING DEVICE - A process measuring device configured to identify malfunctions due to hardware and/or software errors is provided. The process measuring device includes a measuring unit for converting a non-electric variable to an electric variable with a modulation facility modulating the conversion, a signal processing device for processing the electric variable, or an electric raw signal obtained from the electric variable by signal preprocessing, by a signal processing software to produce a measured value, and means for obtaining a test signal corresponding to the modulation. Further, the device includes means in the form of the signal processing device for processing the test signal by the signal processing software to produce a diagnosis value and means for monitoring the signal processing device by comparing the diagnosis value with an expected value.03-18-2010
20130088221DETECTION OF MAGNETIC PARTICLES AND THEIR CLUSTERING - The invention relates to a method and associated apparatuses (100) for the detection of magnetic particles (MP) in a sample chamber (04-11-2013
20090302834Resonant Linearly Polarized Body Current Sensor - A linearly polarized eddy current sensor including a source antenna and a parasitic antenna coupled to the source antenna, serves as a high sensitivity tool for the measurement of the surface impedance of sheet goods without requiring contact with the sample. Sheet goods can have an anisotropic, frequency-dependent surface impedance that is sensitive to minor changes in configuration of the sample. Because the electric field induced by the sensor is linearly polarized, measurement of directionally dependent sheet impedance can be achieved. The measurement is performed with the resonant device operating in resonance mode whereby the immediate proximity of the material to be measured causes damping and shifting of the coupled loop resonance. The resonant frequency of the sensor can be tuned by making changes to its geometry.12-10-2009
20090267596EFFECTIVE-INDUCTANCE-CHANGE BASED MAGNETIC PARTICLE SENSING - The invention relates to an integrated measurement system to detect a quantity of magnetic particles in a sample. The measurement system includes a substrate. An electromagnetic (EM) structure disposed on the surface of the substrate is configured to receive a sample including the magnetic particles in proximity thereof. The integrated measurement system also includes an electrical current generator disposed on the surface of the substrate which is electro-magnetically coupled to the EM structure. The electrical current generator is configured to cause an electrical current to flow in the EM structure. The integrated measurement system also includes an effective inductance sensor disposed on the surface of the substrate which is configured to measure a selected one of an effective inductance and a change in effective inductance. The invention also relates to a method to determine the number of and/or the locations of the magnetic particles in a sample.10-29-2009
20090251136ATTRACTION AND REPULSION OF MAGNETIC OF MAGNETIZABLE OBJECTS TO AND FROM A SENSOR SURFACE - The present invention provides a magnetic sensor device a first magnetic field generating means (10-08-2009
20100134097FREQUENCY-SHIFT CMOS MAGNETIC BIOSENSOR ARRAY WITH SINGLE BEAD SENSITIVITY AND NO EXTERNAL MAGNET - According to one aspect, an integrated magnetic particle measurement device for detecting a presence or absence of magnetic particles in a sample volume includes at least one sensor cell having a differential sensor pair. An active sensor oscillator frequency is responsive to one or more magnetic particles situated within a sample volume. The sensor cell is configured to be operative in the absence of an externally applied magnetic field. A frequency measurement circuit provides as a time-multiplexed output a first count representative of the active sensor oscillator frequency and a second count representative of the reference sensor oscillator frequency. A calculated difference between the first count and the second count is indicative of a presence or an absence of one or more magnetic particles within the sample volume. An integrated magnetic particle measurement system array and a method for detecting one or more magnetic particles are also described.06-03-2010
20100097056METHOD AND APPARATUS FOR NANO-SCALE SQUID - A nano-SQUID (superconducting quantum interference device) method and system for detecting a magnetic field associated with a nano-sample. A magnetic field of a nano-sample (04-22-2010
20110140691NON-DESTRUCTIVE DETERMINATION OF MAGNETIC PERMEABILITY TENSOR IN MATERIALS OF ARBITRARY SHAPE - A method of non-destructive determination of a local magnetic permeability tensor of a material comprises testing by X-ray diffraction on a first surface to identify and measure any surface stress in the material; performing a calibration test using magnetostriction to identify any effect of any determined stress; subjecting the material to a magnetic field having a strength H and measuring a field of induction B on the surface at the selected location and repeating this step by using gradual increases of H until a saturated value is determined for B, to determine a distribution of magnetic domains at the selected location; repeating the determinations of saturated values for B at additional locations on each selected surface of the material; and using the saturated values and distribution of magnetic domains to derive the magnetic permeability tensor. The non-destructive method provides increased accuracy for stressed or unstressed materials of arbitrary shape.06-16-2011
20090212768Magnetic Tagging Techniques - This invention relates to microfluidic apparatus for reading, writing and sorting magnetic tags attached to chemical and biological molecules and other entities. We describe apparatus for separating chemical or biological molecules or moieties each individually attached to a MBM tag miniature multi-bit magnetic tag capable of adopting a plurality of remanent magnetic configurations corresponding to binary information, the apparatus comprising: at least one input for said tagged molecules or moieties; at least two outputs for said tagged molecules or moieties; a microfluidic flow channel incorporating: magnetic readers to read said binary information; magnetic writers to write said binary information; and a switch to direct said tagged molecules or moieties to a selected said output responsive to said binary information. The invention also relates to planar multibit magnetic tags suitable for use with such apparatus.08-27-2009
20080238417MAGNETIC SUBSTANCE DETECTION SENSOR AND MAGNETIC SUBSTANCE DETECTING APPARATUS - The present invention aims at providing a magnetic substance detection sensor: which permits a high sensitivity magnetic field detection element to be effectively operative even in the vicinity of a magnet; which permits quantitative detection without depending upon the magnetic characteristic of a medium, e.g., soft magnetic material, etc.; which is compact and permits realization of reduced space; and which has high productivity. In addition, the present invention aims at providing a compact and high performance magnetic substance detecting apparatus. Specifically, in a magnetic substance detection sensor including a magnet producing a magnetic field, and a magnetic field detection element for detecting change of the magnetic field, the magnetic field detection element is disposed on a plane intersecting with the NS axis of the magnet at a point except for the middle point thereof with the NS direction of the magnet being as normal so that the magnetic field detection direction becomes in parallel to the plane, and a bias magnetic field is formed by the magnet.10-02-2008
20110169485MAGNETIC PARTICLE INSPECTION APPARATUS AND METHOD - A magnetic particle inspection (MPI) apparatus is disclosed that includes a chordal field coil pair and a radial field coil pair. The chordal field coil pair includes first and second chordal field coils configured to produce a chordally oriented magnetic flux about a test article.07-14-2011
20090146654Object Detecting Device for Detecting Object Using Electromagnetic Induction - Provided is an object detecting device, which can detect the shape of or the distance from an object made of an electrically conductive or magnetic material, and which can detect the position indicated by an object made of an electrically-non-conductive/non-magnetic material, such as a finger. The object detecting device detects the shape of or the distance from an object to be measured, which is placed on a detection surface and made of an electrically conductive or magnetic material, by using an electromagnetic induction. The object detecting device includes a first loop wire group of a plurality of first loop wires (06-11-2009
20100123456METHOD FOR INFLUENCING AND/OR DETECTING MAGNETIC PARTICLES IN A REGION OF ACTION, MAGNETIC PARTICLES AND THE USE OF MAGNETIC PARTICLES - A method for influencing and/or detecting magnetic particles in a region of action, magnetic particles and the use of magnetic particles is disclosed, which method comprises the steps of: —introducing magnetic particles into a region of action, —generating a magnetic selection field having a pattern in space of its magnetic field strength such that a first sub-zone having a low magnetic field strength and a second sub-zone having a higher magnetic field strength are formed in the region of action —changing the position in space of the two sub-zones in the region of action by means of a magnetic drive field so that the magnetization of the magnetic particles change locally, —acquiring signals, which signals depend on the magnetization in the region of action, which magnetization is influenced by the change in the position in space of the first and second sub-zone, wherein the magnetic particles comprise a core region and a shell region, the core region comprising a magnetic material, wherein the magnetic material of the core region is provided as a mainly metallic material of comparably high saturation magnetization, wherein the shell region comprises mainly a metal oxide material or a noble metal material.05-20-2010
20090295378CONFINED FIELD MAGNET SYSTEM AND METHOD - A system and method of generating a magnetic field that is uniform in magnitude and direction may generally restrict the field from expanding away from a longitudinal axis. In some instances, such a magnetic field may be controllable in magnitude and direction. In accordance with some embodiments, a generated magnetic field may be selectively confined to a predetermined three-dimensional space.12-03-2009
20090102472MAGNETIC SENSOR DEVICE WITH FIELD GENERATORS AND SENSORS - The invention relates to a magnetic sensor device (04-23-2009
20120293169MAGNETIC DETECTION APPARATUS - A magnetic detection apparatus comprises: a magnetic detection section which is obtained by pressing a base including a magnetic detection device, and magnetic field generation means fixed to the base, into a cap so as to integrate the base, the magnetic field generation means, and the cap; and a secondary molding section including an attachment section for attaching the magnetic detection section, and a connector section for extracting a signal detected by the magnetic detection section.11-22-2012
20130099779HIGH CURRENT RANGE MAGNETORESISTIVE-BASED CURRENT SENSOR - A system includes a magnetoresistive (MR) bridge circuit, a magnetic field sensor, and an adjustable load. The MR bridge circuit receives a supply voltage and generates an output voltage that indicates a strength/direction of a magnetic field. The MR bridge circuit includes first and second MR elements connected in series between a supply node and a ground node, and third and fourth MR elements connected in series between the supply node and the ground node. The output voltage is generated between a first node that is common to the first and second MR elements and a second node that is common to the third and fourth MR elements. The sensor generates signals based on the strength/direction of the magnetic field. The adjustable load is connected in parallel with one of the MR elements, and has a resistance that is controlled based on the signals generated by the sensor.04-25-2013
20100102805METHOD AND ARRANGEMENT FOR INFLUENCING AND/OR DETECTING MAGNETIC PARTICLES IN A REGION OF ACTION - A method and an arrangement for influencing and/or detecting magnetic particles in a region of action is disclosed, which method comprises the steps of: —generating a magnetic selection field having a pattern in space of its magnetic field strength such that a first sub-zone having a low magnetic field strength and a second sub-zone having a higher magnetic field strength are formed in the region of action—changing the position in space of the two sub-zones in the region of action by means of a magnetic drive field so that the magnetization of the magnetic particles change locally, —acquiring signals, which signals depend on the magnetization in the region of action, which magnetization is influenced by the change in the position in space of the first and second sub-zone, wherein a magnetic drive vector of the magnetic drive field is rotated in at least one rotation plane.04-29-2010
20100201355OBJECT DETECTING APPARATUS - An object detecting apparatus that detects an object including a magnetic body including: a detection signal acquiring unit that acquires a detection signal based on a magnetic signal; a disturbance source detection signal storage unit that stores a detection signal of a disturbance source that generates a disturbance component with respect to the detection signal; a determining unit that determines whether the detection signal acquired by the detection signal acquiring unit contains the disturbance component; an amplitude correction unit that corrects an amplitude of the disturbance source detection signal and generates an amplitude-corrected disturbance source detection signal; a disturbance component suppression unit that generates a determination signal by suppressing the disturbance component contained in the detection signal; and an object determination unit that determines whether the object is the object to be detected based on the determination signal.08-12-2010
20100259251ARANGEMENT AND METHOD FOR INFLUENCING AND/OR DETECTING MAGNETIC PARTICLES IN A REGION OF ACTION - An arrangement and a method for influencing and/or detecting magnetic particles in a region of action is disclosed, which arrangement comprises:—selection means (10-14-2010
20090051357MAGNETIC DETECTION DEVICE AND ELECTRONIC APPARATUS EQUIPPED WITH THE SAME - A magnet is contained in a display housing and is supported by a slidable operating member. A control housing contains a magnetoresistance effect element. Slidable shifting of the operating member causes an external magnetic field in a positive (+) direction and an external magnetic field in a negative (−) direction to enter the magnetoresistance effect element from the magnet at different timings, thereby changing the electric resistance of the magnetoresistance effect element. Accordingly, when the operating member is slidably shifted, a switching operation between predetermined modes is performed on the basis of a change in the resistance of the magnetoresistance effect element.02-26-2009
20110221427BIOSENSOR SYSTEM FOR ACTUATING MAGNETIC PARTICLES - The application discloses a biosensor system (09-15-2011
20090021250TARGET SUBSTANCE DETECTION KIT AND TARGET SUBSTANCE DETECTION METHOD - The present invention allows a target substance to be detected easily without applying an external magnetic field to a magnetic marker. The present invention provides a target substance detection kit including: a target substance detection board which contains a magnetic sensor and a first target substance capture molecule; and a magnetic marker which contains a magnetic structure and a second target substance capture molecule, wherein the first target substance capture molecule exists on a surface of the target substance detection board, and the magnetic structure generates a magnetic stray field under polarized light.01-22-2009
20100171492DEGRADATION AND INTEGRITY MEASURING DEVICE FOR ABSORBABLE METAL IMPLANTS - The present invention relates to a measuring device including a sensor catheter, an evaluation unit, and means for receiving a magnetic field and converting the magnetic field to an electrical measurement signal which are situated in the sensor catheter and connected to the evaluation unit. The evaluation unit is designed to evaluate the electrical measurement signal.07-08-2010
20100001722MAGNETIC SENSOR DEVICE WITH SUPPRESSION OF SPURIOUS SIGNAL COMPONENTS - The invention relates to a magnetic sensor device for the determination of magnetized particles (01-07-2010
20100176807MAGNETIC SENSOR DEVICE - The present invention provides a magnetic sensor device (07-15-2010
20100277163Spatial Information Detecting System, its Detecting Method, and Spatial Information Detecting Device - The present invention relates to a spatial information detecting system. A magnetic sensor driving unit drives a magnetic sensor via a multiplexer unit. Signals of the magnetic sensor are converted from analog signals to digital signals, and are transmitted from a data transmitting unit to an arithmetic unit as magnetic data. A Fourier transform unit calculates the amplitudes and phases of a plurality of frequency components of individual axes from the output signal of the magnetic data receiving unit. A magnetic field vector calculating unit calculates signs of the amplitudes of the individual axes from phase relationships between the plurality of frequency components on the individual axes from the output signal from the Fourier transform unit, and calculates the magnetic field vector representing the direction and magnitude of the magnetic field from the signs and amplitudes. A direction calculating unit calculates the direction of the information terminal.11-04-2010
20100123457MICROPARTICLE ANALYSIS DEVICE, MICRO-FLUIDIC CHIP FOR MICROPARTICLE ANALYSIS, AND MICROPARTICLE ANALYSIS METHOD - A microparticle analysis device is provided and includes: a micro-fluidic chip configured to have a region into which a sample liquid containing a magnetic microparticle and a non-magnetic microparticle is introduced, and a microfluidic channel communicating with the region on a downstream side in a liquid sending direction; a magnetic field generating section configured to form a magnetic field in an internal space of the region; and a detecting section configured to detect an optical, electrical, or magnetic characteristic of a microparticle passing through the microfluidic channel.05-20-2010
20080252287Method and Arrangement for the Contactless Inspection of Moving Electrically Conductive Substances - The invention relates to a method and arrangement for the contactless determination of conductivity-influencing properties and their spatial distribution over the entire cross section of an electrically conductive substance moving in a primary magnetic field (B). The substance may be a liquid or a solid. A simultaneous measurement of a number of mechanical state parameters of the magnetic system is performed (three-dimensional components of the force and the torque), said parameters being variable by the effect of a secondary field on the magnetic system, the secondary field being produced on the basis of eddy currents induced in the substance by the primary field (B). To determine the spatial distribution of the property that is sought, the primary field is changed in intensity or form a number of times and a measurement of the state parameters is carried out for each change. The determination of the properties sought or their distribution takes place by solving an inverse problem using the method of least squares.10-16-2008
20100045279DEVICE AND METHOD FOR DETECTING AN ANOMALY IN AN ASSEMBLY OF A FIRST AND A SECOND OBJECT - A method for detecting an anomaly in an assembly of a first and a second object of electrically conductive material forming an intermediate space between them, comprising providing a device (02-25-2010
20080315869MAGNETIC INDEXER FOR HIGH ACCURACY HOLE DRILLING - A method for locating a device, which produces a field, with a probe assembly affected by the field. The method may involve: placing a device on a first side of a work piece; producing a field with the device through the work piece; using a robot to hold and to place a probe assembly adjacent a second side of the work piece; providing information from the probe assembly to the robot that is used by the robot to move the probe assembly to substantially determine a position of the device; determining a location of a center field axis of the field with the probe assembly; and providing a physical confirmation of the center field axis to a user.12-25-2008
20110109306NON-INTRUSIVE MONITORING OF POWER AND OTHER PARAMETERS - Methods and apparatus for non-intrusive power monitoring and current measurement in a circuit breaker without modification of the breaker panel or the circuit breaker itself. In one example, an inductive pickup sensor senses current from the breaker face, an inductive link transmits power through a steel breaker panel door, and a passive balanced JFET modulator circuit modulates a carrier signal on the inductive link with information regarding the sensed current. A demodulated breaker current signal is available outside of the breaker panel door. The JFET modulator circuit does not require DC power to modulate the carrier signal with the information regarding the sensed current from the breaker. Such methods and apparatus may be interfaced with a spectral envelope load detection system that can monitor multiple loads from a central location.05-12-2011
20090033323METHOD AND APPARATUS FOR NONDESTRUCTIVE INSPECTION OF INTERWOVEN WIRE FABRICS - A method and apparatus for nondestructive inspection of interwoven wire fabric components. The apparatus comprises a probe, a power source, and a display system. The probe is capable of creating a magnetic field for a plurality of wires in an interwoven wire fabric component such that disturbances of the magnetic field caused by the plurality of wires can be detected. The power is a source connected to the probe and is capable of sending an alternating current through the probe to generate the magnetic field for the wire. The display system is connected to the probe and is capable of displaying results from detecting the magnetic field and disturbances of the magnetic field.02-05-2009
20100033171ARRANGEMENT AND METHOD FOR INFLUENCING AND/OR DETECTING MAGNETIC PARTICLES IN A REGION OF ACTION - An arrangement and a method for influencing and/or detecting magnetic particles in a region of action is disclosed, which arrangement comprises:—selection means for generating a magnetic selection field having a pattern in space of its magnetic field strength such that a first sub-zone having a low magnetic field strength and a second sub-zone having a higher magnetic field strength are formed in the region of action,—drive means for changing the position in space of the two sub-zones in the region of action by means of a magnetic drive field so that the magnetization of the magnetic particles changes locally, wherein the selection means comprises at least one permanent magnet wherein the permanent magnet is at least partially shielded by an electrically high conductive shielding means.02-11-2010
20100033174ARRANGEMENT AND METHOD FOR INFLUENCING AND/OR DETECTING MAGNETIC PARTICLES IN A REGION OF ACTION - An arrangement for influencing and/or detecting magnetic particles, a method for calibrating such an arrangement and a method for influencing and/or detecting magnetic particles in a region of action is disclosed, which arrangement comprises selection means for generating a magnetic selection field having a pattern in space of its magnetic field strength such that a first sub-zone having a low magnetic field strength and a second sub-zone having a higher magnetic field strength are formed in the region of action, drive means for changing the position in space of the two sub-zones in the region of action by means of a magnetic drive field so that the magnetization of the magnetic particles changes locally, the arrangement comprising a drive signal chain, receiving means for acquiring detection signals, which detection signals depend on the magnetization in the region of action, which magnetization is influenced by the change in the position in space of the first and second sub-zone, the arrangement comprising a detection signal chain, wherein the arrangement comprises a compensation controller providing a compensation signal to the drive signal chain and/or to the detection signal chain by means of a coupling means.02-11-2010
20100033173ARRANGEMENT FOR INFLUENCING AND/OR DETECTING MAGNETIC PARTICLES IN A REGION OF ACTION AND METHOD OF PRODUCING A DISK SHAPED COIL - An arrangement for influencing and/or detecting magnetic particles in a region of action and a method of producing a disk shaped coil is disclosed, which arrangement comprises: selection means for generating a magnetic selection field having a pattern in space of its magnetic field strength such that a first sub-zone having a low magnetic field strength and a second sub-zone having a higher magnetic field strength are formed in the region of action, drive means for changing the position in space of the two sub-zones in the region of action by means of a magnetic drive field so that the magnetization of the magnetic particles changes locally, receiving means for acquiring signals, which signals depend on the magnetization in the region of action, which magnetization is influenced by the change in the position in space of the first and second sub-zone, wherein the selection means and/or the drive means and/or the receiving means comprises an at least partially disk shaped coil.02-11-2010
20090322321Magnetic roof impact sensor - A roof sensor for a vehicle is provided. A sensor is mounted in proximity to the roof of the vehicle for monitoring the deformation of the roof caused by impact during a crash, particularly when the vehicle rolls over. A vehicle safety system is also provided. A sensor, mounted in proximity to the roof of a vehicle, monitors the deformation of the roof. A controller is connected to the sensor, a safety device, and a vehicle communication device. Based on the severity of the deformation of the roof caused by an impact, the controller activates the safety device to prevent injury to vehicle passengers and communicates the status of the vehicle to a third party such as emergency services.12-31-2009
20080204009Method of Determining a Spatial Distribution of Magnetic Particles - The invention relates to a method of determining a spatial distribution of magnetic particles in an examination zone, in which method a first magnetic field is generated, which forms in the examination zone a first sub-zone having a relatively low magnetic field strength and a second sub-zone having a relatively high magnetic field strength. The position in space of the two sub-zones is then changed by a second magnetic field, whereby the magnetization in the examination zone is changed. Signals dependent on the change in magnetization are acquired and evaluated to extract information concerning the spatial distribution of the magnetic particles. The second magnetic field is generated so that the time derivative of the second magnetic field is substantially identical for each spatial component.08-28-2008
20100060274DIGITAL FERROMAGNETIC PART INSPECTION - Digital ferromagnetic part inspection system and method use a magnetizer for magnetizing a ferromagnetic part to be inspected, wherein a defect in or near a surface of the ferromagnetic part causes an external magnetic field. A magnetic field sensing element is positioned near the ferromagnetic part for sensing the external magnetic field. An inspection module identifies the defect in or near the surface of the ferromagnetic part by interpreting data collected by the magnetic field sensing element in response to the magnetic field sensing element being placed near the ferromagnetic part.03-11-2010
20080218162Tomographic imaging method and associated arrangement - According to at least one embodiment of the invention, at least two excitation fields with frequencies capable of being differently prescribed act on the object in the examination space, with the gradient field approximately vanishing in the examination space. In another embodiment, an arrangement includes a Maxwell coil pair for generating an inhomogeneous magnetic field with a prescribable magnetic field gradient, at least one device for exciting two auxiliary fields with different frequencies and a detection coil for recording the response signal.09-11-2008
20100194386MAGNETIC SENSOR DEVICE - The present invention provides a sensor device (08-05-2010
20100026285Material Condition Assessment with Eddy Current Sensors - Eddy current sensors and sensor arrays are used for process quality and material condition assessment of conducting materials. In an embodiment, changes in spatially registered high resolution images taken before and after cold work processing reflect the quality of the process, such as intensity and coverage. These images also permit the suppression or removal of local outlier variations. Anisotropy in a material property, such as magnetic permeability or electrical conductivity, can be intentionally introduced and used to assess material condition resulting from an operation, such as a cold work or heat treatment. The anisotropy is determined by sensors that provide directional property measurements. The sensor directionality arises from constructs that use a linear conducting drive segment to impose the magnetic field in a test material. Maintaining the orientation of this drive segment, and associated sense elements, relative to a material edge provides enhanced sensitivity for crack detection at edges.02-04-2010
20120306481CONVEYOR BELT WEAR DETECTION APPARATUS - A rubber magnet (12-06-2012
20110050213BELT MONITORING SYSTEM - A belt monitoring system which can accurately monitor the condition of a conveyor belt by correcting it for the effect of belt deviation. Wear detecting magnets (03-03-2011
20090102471PROBE FOR A MAGNETIC REMANENCE MEASUREMENT METHOD, AND METHOD FOR DETECTING DEPOSITS OF FOREIGN MATERIAL AND INCLUSIONS IN HOLLOW SPACES - A probe for a magnetic remanence measurement method, in particular for detecting foreign material deposits and inclusions in hollow spaces, the hollow spaces being formed in a non-ferromagnetic material and the foreign material deposits and inclusions being made of a ferromagnetic material, wherein the probe includes at least one magnetic field sensor, at least one first and one second magnet, the magnets being configured before the at least one magnetic field sensor in a direction of introduction into the hollow space, and being situated relative to one another in such a way that their pole axes run non-parallel to one another.04-23-2009
20120062219SENSOR DEVICE FOR MAGNETIC PARTICLES WITH A HIGH DYNAMIC RANGE - The invention relates to a method and a sensor device (03-15-2012
20120161757METHOD AND SYSTEM FOR DETERMINING A STATE OF CHARGE OF A BATTERY - Methods and systems are provided for determining a state of charge of a battery. The battery is subjected to a predetermined magnetic field such that the battery and the predetermined magnetic field jointly create a resultant magnetic field. The resultant magnetic field is sensed. The state of charge of the battery is determined based on the resultant magnetic field.06-28-2012
20120161756MAGNETIC FIELD SENSOR HAVING ANISOTROPIC MAGNETORESISITIVE ELEMENTS, WITH IMPROVED ARRANGEMENT OF MAGNETIZATION ELEMENTS THEREOF - An integrated magnetic-field sensor designed to detect an external magnetic field, comprising a first magnetoresistive structure for detecting the external magnetic field, the first magnetoresistive structure including first magnetoresistive means having a main axis of magnetization and a secondary axis of magnetization set orthogonal to one another. The magnetic-field sensor further comprises a magnetic-field generator, including a first portion configured for generating a first magnetic field having field lines in a first field direction, and a second portion, which is coplanar and is connected to the first portion, configured for generating a second magnetic field having field lines in a second field direction, the first magnetoresistive means being configured so that the main axis of magnetization extends parallel to the first field direction, and the secondary axis of magnetization extends parallel to the second field direction.06-28-2012
20100207618NON-CONTACT SENSOR SYSTEM AND METHOD FOR VELOCITY DETERMINATION - A non-contact sensor system is provided that comprises a first sensor element disposed within a first member having an axis Y, and a second member configured to rotate about the axis Y at a value X. The second member is configured to interface with the first member. The non-contact sensor system further comprises a second sensor element disposed on the second member proximate the first sensor element without physically contacting the first sensor element, and the first sensor element and the second sensor element are operatively coupled to facilitate sensing the value X. The non-contact sensor system may be configured to sense velocity, acceleration, and other values.08-19-2010
20090058407PHYSICAL QUANTITY CONVERSION SENSOR AND MOTOR CONTROL SYSTEM USING THE SAME - A first sensor element outputs a first output signal in correspondence to a direction of the magnetic flux lines acting from the outside. A second sensor element outputs a second output signal associated with the first output signal in correspondence to a direction of the magnetic flux lines acting from the outside. A first conversion processing section converts the first output signal output from the first sensor element and the second output signal output from the second sensor element into the second physical quantity. A second conversion processing section converts the first output signal output from the first sensor element and the second output signal output from the second sensor element into a signal representing the rotation angle of the motor.03-05-2009
20090058406NONDESTRUCTIVE INSPECTION METHOD AND DEVICE - The present invention nondestructively analyzes the position or corrosion state of a magnetic material present in the interior of a non-magnetic material structure. The magnetic material is magnetized from the outside of the structure, and magnetic flux density of the thus-magnetized magnetic material is measured at the outside of the structure, to thereby specify the position of the magnetic material or to analyze the corrosion state of the magnetic material. The magnetic material is magnetized in two stages. After the position of the magnetic material magnetized through first-stage magnetization is specified through measurement of magnetic flux density of the magnetic material, the magnetic material is demagnetized through application of an alternating magnetic field. After second-stage magnetization is performed at a position facing the thus-specified magnetic material position, magnetic flux density of the thus-magnetized magnetic material is measured, to thereby analyze the corrosion state of the magnetic material.03-05-2009
20100052665MAGNETIC SENSOR DEVICE FOR AND A METHOD OF SENSING MAGNETIC PARTICLES - A magnetic sensor device (03-04-2010
20100033172ARRANGEMENT AND METHOD FOR INFLUENCING AND/OR DETECTING AND/OR LOCATING MAGNETIC PARTICLES IN A REGION OF ACTION - An arrangement and a method for influencing and/or detecting and/or locating magnetic particles in a region of action is disclosed, which arrangement comprises: —drive means for generating a magnetic drive field so that the magnetization of the magnetic particles changes, wherein the magnetic particles comprise at least a first and a second magnetic particle, —the receiving means comprising at least a first receiving probe providing a first signal (02-11-2010
20100148765MAGNETIC SENSOR DEVICE WITH FIELD GENERATORS AND SENSOR ELEMENTS - The invention relates to a magnetic sensor device (06-17-2010
20130015848FIELD GENERATOR PATCH WITH DISTORTION CANCELLATIONAANM Govari; AssafAACI HaifaAACO ILAAGP Govari; Assaf Haifa ILAANM Altmann; Andres ClaudioAACI HaifaAACO ILAAGP Altmann; Andres Claudio Haifa ILAANM Ephrath; YaronAACI KarkurAACO ILAAGP Ephrath; Yaron Karkur IL - A magnetic field generator includes a substrate, a main generator coil, at least one field sensor, at least one shim coil, a driver circuit and a correction circuit. The main generator coil, the field sensor, and the shim coil are all disposed on the substrate. The driver circuit is coupled to drive the main generator coil with a driving current at a selected frequency. The correction circuit is coupled to receive a signal at the selected frequency from the at least one field sensor and, in response to deviations in the signal from a predefined baseline, to drive the at least one shim coil with a driving current having an amplitude configured to return the signal to the baseline.01-17-2013
20120242333MAGNETIC STEERING APPLICATION FOR SINGULATED (X) MR SENSORS - A controller for a test head module (09-27-2012
20130093417MAGNETIC STUD FASTENER FINDER - Provided is a stud finder for determining the location of a stud within a wall. The stud finder includes a body having an internal compartment formed therein which is sized and configured to house a magnetic element therein. The stud finder is moveable along the wall to place the magnetic element in magnetic attraction with metallic fasteners (i.e., nails, screws, etc) disposed within the stud, such as for securing drywall to the stud. The magnetic attraction urges the magnetic element toward the metallic element to provide a visual indication as to the precise location of the metallic element, as well as the underlying stud.04-18-2013
20130141088NON-INTRUSIVE MONITORING OF POWER AND OTHER PARAMETERS - Methods and apparatus for non-intrusive power monitoring and current measurement in a circuit breaker without modification of the breaker panel or the circuit breaker itself. In one example, an inductive pickup sensor senses current from the breaker face, an inductive link transmits power through a steel breaker panel door, and a passive balanced JFET modulator circuit modulates a carrier signal on the inductive link with information regarding the sensed current. A demodulated breaker current signal is available outside of the breaker panel door. The JFET modulator circuit does not require DC power to modulate the carrier signal with the information regarding the sensed current from the breaker. Such methods and apparatus may be interfaced with a spectral envelope load detection system that can monitor multiple loads from a central location.06-06-2013
20100315077Method of non-destructively testing, a system and a computer program product - The invention relates to a method of non-destructively testing a magnetisable conducting object surrounded by a magnetisable layer. The method comprises the step of abruptly changing a field strength of a primary magnetic field that is applied exterior to the magnetisable layer. Further, the method comprises the step of receiving a vanishing secondary magnetic field generated by eddy currents induced by the changed field strength of the primary magnetic field. The method also comprises the step of analyzing a temporal field strength of the received secondary magnetic field for deriving characteristics of the magnetisable conducting object. In addition, the method comprises the step of applying a transient tertiary magnetic field exterior to the magnetisable layer when the field strength of the primary magnetic field abruptly changes, wherein the orientation of the primary and tertiary magnetic field, respectively, are mutually opposite.12-16-2010
20130187642METHODS OF CHARACTERIZING A COMPONENT OF A POLYCRYSTALLINE DIAMOND COMPACT BY AT LEAST ONE MAGNETIC MEASUREMENT - In an embodiment, a method of characterizing a polycrystalline diamond compact is disclosed. The method includes providing the polycrystalline diamond compact, and measuring at least one magnetic characteristic of a component of the polycrystalline diamond compact.07-25-2013

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