Abstract: A method for determining the average distance between a measurement device and a conductor includes determining a profile of a horizontal component using the horizontal position of the device that indicates the orthogonal distance between the device and the longitudinal axis of the conductor parallel to the earth's surface, measured at at least two different horizontal positions, determining a profile of the vertical component, which is associated with the determined profile of the horizontal component, using the horizontal position of the device, wherein the vertical profile is determined by measuring the vertical components associated with the horizontal components, determining the ratio of the profiles as a function using the horizontal position of the device, determining the derivative of the ratio according to the horizontal position, determining the reciprocal of the derivative, and determining the average distance between the devices and the conductor from the reciprocal of the derivative.

Abstract: The present disclosure describes techniques for detecting foreign objects. In some aspects, an apparatus for detecting objects is provided. The apparatus includes a plurality of sense circuits, each of the plurality of sense circuits including a primary sense coil having a first terminal and a second terminal, a secondary sense coil having a first terminal and a second terminal, and a capacitor having a first terminal and a second terminal. The first terminal of the capacitor is electrically connected to the second terminals of each of the primary sense coil and the secondary sense coil. The apparatus further includes a driver circuit electrically connected to the first terminal of the primary sense coil of each of the plurality of sense circuits. The apparatus further includes a measurement circuit electrically connected to the first terminal of the secondary sense coil of each of the plurality of sense circuits.

Abstract: A magnetism detection device according to an embodiment of the disclosure includes a sensor section and a resistive section. The sensor section includes a first magnetism detection element. The first magnetism detection element has a first stacked structure and is configured to detect a magnetic field to be detected. The resistive section includes a first resistive element and is coupled to the sensor section. The first resistive element has the first stacked structure.

Abstract: An electromagnetic tracking system includes a magnetic transmitter configured to output magnetic fields, a receiver responsive to the magnetic fields, an electronics assembly having conductive elements that cause distortion to the magnetic fields, and an output mechanism configured to output a position of the receiver relative to the magnetic transmitter, wherein the magnetic transmitter has at least one winding disposed around a hollow ferromagnetic core comprised of conductive material through which current is made to flow by the electronics, wherein the electronics assembly is at least partially contained within the hollow portion of the hollow ferromagnetic core. Methods of manufacturing include shaping walls into a hollow shell to surround an electronics assembly, covering the hollow shell with ferromagnetic material, inserting the wrapped hollow shell into a plastic bobbin, and winding the plastic bobbin with coil wire to produce three orthogonal windings.

Abstract: A magnetoresistive sensor has a sensor plane in which the magnetoresistive sensor is sensitive to a magnetic field. The magnetoresistive sensor includes a reference layer having a reference magnetization that is fixed and that is aligned with an in-plane axis of the sensor plane; and a magnetic free layer disposed proximate to the reference layer, the magnetic free layer having a free layer magnetization aligned along an out-of-plane axis that is out-of-plane to the sensor plane. The free layer magnetization is configured to tilt away from the out-of-plane axis and towards the sensor plane in a presence of an external in-plane magnetic field.

Abstract: According to one implementation, an ultrasonic inspection system includes: a first inspection unit, a second inspection unit, and a signal processing system. The first inspection unit acquires a detection signal of a first ultrasonic wave in a first inspection section of an structural object, using a first ultrasonic transducer and a first ultrasonic sensor. The second inspection unit acquires a detection signal of a second ultrasonic wave in a second inspection section of the structural object, using a second ultrasonic transducer and a second ultrasonic sensor. The signal processing system obtains an index value representing inspection information of at least one of the first inspection section and the second inspection section, based on the detection signal of the first ultrasonic wave and the detection signal of the second ultrasonic wave.

Abstract: A magnetic field sensor is provided, including a substrate, a first bridge circuit formed on the substrate, the first bridge circuit being arranged to generate a first signal indicative of a motion of a target, and a second bridge circuit formed on the substrate, the second bridge circuit being arranged to generate a second signal indicative of whether the magnetic field sensor is aligned with the target.

Abstract: A rotation angle detector includes a magnet arranged to rotate, and a magnetic detection circuit provided with a first pair of magnetic detection elements arranged to be in combination sensitive to a first magnetic field in circumferential direction to the first surface and to a second magnetic field in normal direction to the first surface and arranged away from the rotation axis, and configured to detect magnetic flux of the magnet. A second pair of magnetic detection elements are arranged to be in combination sensitive to the first magnetic field in circumferential direction to the first surface and to the second magnetic field in normal direction to the first surface. A signal processing unit is configured to output a signal representative of a rotation angle of the magnet based on outputs of the first and second pair of magnetic detection elements.

Abstract: In a magnetic field source detecting apparatus, a magnetic sensor unit detects an intensity and a direction of a measurement target magnetic field on or over a surface of a test target object; and a position estimating unit estimates a position in a depth direction of a magnetic field source that exists at an unspecified position inside a test target object on the basis of the intensities and the directions of the measurement target magnetic field detected by the magnetic sensor at at least two 2-dimensional positions of the surface.

Abstract: A multi-element sensor for measuring a magnetic field. The multi-element sensor comprises a magnetic sensing element, and an electronic circuit. The magnetic sensing element is mounted on the electronic circuit and comprises a fractured tether. The magnetic sensing element is electrically connected with the electronic circuit. The electronic circuit is produced in a first technology and/or first material and the magnetic sensing element is produced in a second technology and/or second material different from the first technology/material.

Abstract: A modular computer system includes a plurality of circuit modules, each of which includes one or more components that are subject to failure, such as a vacuum tube. A carrier assembly is added to each circuit module of the modular computer system. The carrier assembly hosts monitoring circuitry that indicates the proper functioning of one or more components on the attached module. In one implementation, each module includes a vacuum tube, and a coil located on the carrier assembly is connected in series with the heater of the vacuum tube. A Hall effect sensor is positioned near the coil. If the heater of the vacuum tube fails, the flow of current through the coil is interrupted and is detected by the Hall effect sensor. The Hall effect sensor is connected to an LED that indicates failure of the vacuum tube.

Abstract: A magnetoresistive sensor with a compensating coil comprising a silicon substrate, collection of MR sensor units disposed on the silicon substrate, collection of rectangular soft ferromagnetic flux concentrators, serpentine compensating coil, connecting circuit, and collection of bond pads used for electrical connections. The MR sensor units are interconnected to form a push-pull sensor bridge. The MR sensor units are disposed below the gap between two adjacent soft ferromagnetic flux concentrators. The serpentine compensating coil has a positive current strap over the MR sensor units and a negative current strap under the soft ferromagnetic flux concentrators. The MR sensor bridge and the serpentine compensating coil are connected through bond pads and covered with an encapsulation structure. The magnetoresistive sensor also comprises a spiral initialization coil placed on a substrate within the encapsulating structure.

Abstract: A magnetic resonance coil and a magnetic resonance imaging system using the same are provided. The magnetic resonance coil may include an antenna and a signal processor. The antenna may be configured to receive a radio frequency (RF) signal emitted from an object, wherein the antenna does not resonate with the RF signal. The signal processor may be coupled to the antenna configured to process the RF signal to generate a processed signal.

Abstract: A chemical sensor that enables high detection accuracy that includes a soft-magnetic-material film, a magnetoresistance-effect element, a first film disposed over the soft-magnetic-material film, and a second film disposed over the magnetoresistance-effect element, wherein, when viewed from a direction perpendicular to the film surface of the soft-magnetic-material film, the soft-magnetic-material film is disposed at least partially so as not to overlap the magnetoresistance-effect element; when viewed from the direction perpendicular to the film surface of the soft-magnetic-material film, the magnetoresistance-effect element is disposed at least partially so as not to overlap the soft-magnetic-material film; and the second film has higher solubility in a specific liquid than the first film.

Abstract: To provide a chemical sensor that enables high detection accuracy. A chemical sensor includes a substrate, two or more magnetoresistance-effect elements disposed side by side in a substrate in-plane direction over the substrate, a first film disposed over a region between the magnetoresistance-effect elements adjacent to each other, and a second film disposed over the magnetoresistance-effect elements, wherein the second film has higher solubility in a specific liquid than the first film.

Abstract: Paramagnetic fine particles of 1 micron or less used under a strong magnetic field were shown to form beads-like aggregates along the magnetic flux, and become irregularly shaped as such a mass of particles combines with a flat particle layer. This phenomenon becomes a factor that degrades the quality of quantification in bioanalysis. By confining a solution of microscopic magnetic fine particles between flat substrates of high wettability as thin a vertical thickness as possible and attracting the magnetic fine particles under a magnetic field applied from the side of one of the flat substrates, the magnetic fine particles can be evenly immobilized in the form of a film on the substrate surface in a dispersion state, and the quality of the biomolecule quantification can be improved.

Abstract: A system and method are disclosed for using vehicle signature data from a single inductive loop sensor to estimate vehicle speed. Two regressors are calculated from the vehicle signature: the “inverse of the duration” and the “slew rate”. A point is found by normalizing the vehicle signature in amplitude and determining the earliest point in the normalized signature to cross a set threshold. The slew rate is the slope of the normalized vehicle signature at this point. Regression models are generated from empirical data for several vehicle categories. Using the regression model for the category of vehicle and the two regressors vehicle speed is estimated. The regression models have been demonstrated to be robust eliminating the need for site-specific calibration or estimation.

Abstract: The subject matter of this specification can be embodied in, among other things, a method that includes providing a first pipe having a first leading end and a first trailing end, providing a second pipe having a second leading end and a second trailing end, abutting at least a portion of the second leading end to at least a portion of the first trailing end to define a pipe abutment zone comprising a portion of the first pipe measured longitudinally from the first trailing end and a portion of the second pipe measured longitudinally from the second leading end, conveying the first and second pipe past an inspection device, inspecting by the inspection device a first portion of the pipe abutment zone and a second portion of the pipe abutment zone, and providing defect data that describes defects detected within the first portion and the second portion.

Abstract: A proximity sensor in which generation of voids in a resin sealing portion sealing an inside of a housing can be suppressed and thus a yield is improved. The proximity sensor includes a housing, a detection coil, a circuit board and a resin sealing portion. The circuit board is accommodated in the housing to partition an internal space of the housing, and the resin sealing portion covers at least a part of the circuit board by filling the internal space of the housing and thus seals a covered portion of the circuit board. A resin injection port configured to inject a liquid resin forming the resin sealing portion by curing the liquid resin is provided in the housing, and a cutout portion having a notch shape or an opening shape is provided in the circuit board to include at least a part of a portion facing the resin injection port.

Abstract: A fluid treatment cartridge includes a housing having a fluid inlet and a fluid outlet with a treatment media contained within the housing. The fluid treatment cartridge includes a detection member comprising at least one closed electrically conductive loop having at least two spatially separate sections. Each of the sections generates a magnetic response when at least one section is electromagnetically excited. The magnetic response of each section is predetermined by the physical shape of the section and comprises at least one of a predetermined magnetic phase response and a predetermined magnetic amplitude response. The predetermined magnetic response of at least one other section of the closed electrically conductive loop corresponds to at least a one digit code.

Abstract: A method for the rehabilitation of a pipeline with a lining element made of a resin-absorbing material, comprising the following steps: Impregnating the lining element with a hardenable resin; inserting the lining element into the pipeline and positioning the lining element at the pipeline section to be rehabilitated; pressing the lining element against the inner wall of the pipeline; hardening the lining element; and applying at least one information parameter to the lining element subsequent to its hardening.

Abstract: Methods and apparatus for characterizing biological micro structure in a voxel based, at least in part, on a set of diffusion-weighted magnetic resonance (MR) data. A multi-compartment parametric model is used to predict a diffusion signal for the voxel using information from the set of diffusion-weighted MR data. Predicting the diffusion signal comprises determining, based on the set of diffusion-weighted MR data, a first set of parameters describing isotropic diffusion in a first compartment of the multi-compartment model and a second set of parameters describing anisotropic diffusion due to the presence of at least one white matter fascicle in a second compartment of the multi-compartment model. At least one first dataset of the set of diffusion-weighted MR data is associated with a first non-zero b-value and at least one second dataset of the set of diffusion-weighted MR data is associated with a second non-zero b-value different than the first non-zero b-value.

Abstract: A magnet unit for a magnetic resonance apparatus has a superconducting basic field magnet, a vacuum vessel, within which the superconducting basic field magnet is situated, and a cylindrical magnet housing. The magnet housing has a housing surface having a first sub-area and a second sub-area, with the first sub-area inwardly offset from the outside, in the direction of a longitudinal extent of the magnet unit, in relation to the second sub-area.

Abstract: An electromagnetic impedance sensing device includes a substrate, a first patterned conductive layer, a second patterned conductive layer, a magneto-conductive wire and an encapsulation layer. The substrate has a surface and a trench extending into thereof. The first patterned conductive layer is formed on the surface, as well as a bottom and sidewalls of the trench. The magneto-conductive wire is disposed in the trench. The second patterned conductive layer extending across the trench and electrically in contact with the first patterned conductive layer is formed on the first patterned conductive layer to make the magneto-conductive wire sandwiched between the first and the second patterned conductive layers. The magneto-conductive wire is encapsulated by the encapsulation layer to make the magneto-conductive wire electrically isolated from the first and second patterned conductive layers.

Abstract: A charge and discharge test probe for a secondary battery includes: an inner plunger moved up and down by elastic force of a spring; a head having a central through hole through which the inner plunger passes to protrude from an upper end of the head; and a first conductive elastic member mounted to the head.

Abstract: A method and a device determine a surface temperature of an inductively heated roller shell. A current is induced in the roller shell by an induction coil. An actual value of the surface temperature is determined from at least one measured parameter of an electrical circuit of the induction coil by means of stored data. In order to be able to determine shell temperatures of the roller shell that are as exact as possible without large dispersion, the induction coil is connected to a capacitor in the electrical circuit in order to form an oscillating circuit, wherein the oscillating circuit is operated at an alternating-voltage frequency in the range of 3000 Hz to 30,000 Hz.

Abstract: Frequency division multiplexing-based techniques for FET-based sensor arrays are provided. In one aspect, a sensor device includes: an array of FET-based sensors, wherein the sensors are grouped into multiple channels, and wherein each of the sensors includes an insulator on a substrate, a local gate embedded in the insulator, a channel material over the local embedded gate, and source and drain electrodes in contact with opposite ends of the channel material, and wherein a surface of the channel material is functionalized to react with at least one target molecule. The sensors in a given channel can be modulated (via the local gate) to enable the signal read out from the channel to be divided in the frequency domain based on the different frequencies used to modulate the sensors.

Abstract: A piece of jewellery, wherein the jewellery comprises at least one tag or chip programmed with at least a unique identification code, and a tag reader is configured to read the tag or chip when the tag reader and the piece of jewellery touch, or come into close contact and, display a message or content associated with the unique identification code.

Abstract: Disclosed is method for measuring influence of or propagation time of inductive fields including producing and detecting a first inductive temporal field change and a first change value, producing and detecting a further inductive temporal field change and further field change, at least one of the changes being influenced by an object, comparing the first and further change values to produce a comparison value used to produce amplitude values such that amplitude of the first or further change value are substantially of the same magnitude, detecting a clock pulse alternation signal corresponding to the field change, determining a difference value by a comparison of the clock pulse alternation signals, changing the difference value to change phase delay of the first or further field change until the difference value is zero, using the phase delay to determine influence/propagation time of the inductive change.

Abstract: Methods and apparatus configured to evaluate a volume of interest of an earth formation intersected by a borehole. Apparatus comprise a transceiver electrode on the tool body configured to provide electrical current to the earth formation; a return electrode configured to receive the electrical current returning from the earth formation; a multi-function electrode on the resistivity imager tool; and an electrical system configured to provide current measurements at the transceiver electrode. In the first operational mode, the electrical system maintains the tool body at a first electrical potential, and maintains the multi-function electrode and the transceiver electrode at a second electrical potential; and in the second operational mode, the electrical system maintains the tool body at the first electrical potential, maintains the multi-function electrode at the first electrical potential, and maintains the transceiver electrode at the second potential.

Abstract: A rotation detector detecting rotation of a rotor, based on a signal produced according to rotation of the rotor, having a waveform according to a rotational cycle thereof, includes a signal obtaining unit to obtain two signals having phases different from each other; a vector operating unit to determine a vector according to a rotational angle of the rotor, based on the two signals; and a rotation detecting unit to detect rotation of the rotor, based on the vector. The two signals are produced from two elements located at positions farthest in a rotational angle of the rotor among plural rotation detecting elements located at positions different from each other.

Abstract: A method of taking a plurality of measurements of the magnetic field using the plurality of sensors; includes assessing the inductive magnetic excitation; and determining the likely distribution of magnetic sources on the surface of the hull by resolving a system of equations derived from modeling the physical phenomena at play, on the basis of the plurality of measurements taken and the assessed inductive magnetic excitation. The model describes the induced magnetic sources as a distribution of dipolar sources and the remanent magnetic sources as a distribution of monopolar sources. A device (6) for determining the magnetization of the hull of a ship for implementing the method is also described.

Abstract: A method of measuring mechanical runout including: mounting a work piece on a rotatable mount, wherein the mount is configured to rotate the work piece; placing a displacement sensor at a known position adjacent a surface of the work piece, the displacement sensor being configured to measure a radial dimension of the work piece; attaching a removable angle indicator to the surface of the work piece; rotating the work piece while mounted on the mount and collecting rotational data of the rotational position of the work piece during the rotation; collecting displacement data from the displacement sensor as the work piece rotates, wherein the displacement data indicates a radial distance from a rotational axis of the work piece to the surface of the work piece at points on the surface as the surface rotates with respect to the displacement sensor; analyzing the displacement data to detect data representing the angle indicator on the surface of the work piece; correlating the displacement data with the rotational

Abstract: Provided are high-throughput detection systems. The systems include a magnetic sensor device, a magnetic field source and a reservoir plate that includes a plurality of fluid reservoirs. The magnetic sensor device includes a support with two or more elongated regions each having a magnetic sensor array disposed at a distal end. Also provided are methods in which the subject high-throughput detection systems find use.

Abstract: A magnetic resonance system includes a magnetic resonance scanner having a multi-channel transmit coil or coil system and a magnetic resonance receive element; and a digital processor configured to perform an imaging process. The image process includes shimming the multi-channel transmit coil or coil system, acquiring a coil sensitivity map for the magnetic resonance receive element using the multi-channel transmit coil or coil system, acquiring a magnetic resonance image using the magnetic resonance receive element and the shimmed multi-channel transmit coil or coil system, and performing an intensity level correction on the acquired magnetic resonance image using the coil sensitivity map to generate a corrected magnetic resonance image.

Abstract: A method for producing printed magnetic functional elements for resistance sensors and printed magnetic functional elements. The invention refers to the field of electronics and relates to a method for producing resistance sensors, such as can be used, for example, in magnetic data storage for read sensors or in the automobile industry. The disclosure includes a simple and cost-effective production method and to obtain such printed magnetic functional elements with properties that can be adjusted as desire, in which a magnetic material is deposited onto a substrate as a film, is removed from the substrate and divided into several components and these components are applied on a substrate by means of printing technologies. Aspects are also directed to a printed magnetic functional element for resistance sensors of several components of a film, wherein at least 5% of the components of the functional element have a magnetoimpedance effect.

Abstract: A current detection apparatus includes two magnetic detectors that are arranged oppositely on a front surface and a back surface of a board which is located above a current path in order to detect a strength of a magnetic field, an electromagnetic shielding frame member that is mounted on the current path so that the two magnetic detectors and a part of the current path are accommodated inside the electromagnetic shielding frame member, and a control circuit that determines whether a failure which occurs in either of the two magnetic detectors from a difference between magnetic fields detected by the two magnetic detectors, respectively. Sensitivities of the two magnetic detectors are made adjusted so that current values outputted from the two magnetic detectors depending on detected magnetic fields are identical to each other in a normal state.

Abstract: A rolling bearing sensor, especially a rotational speed sensor, having a housing and a signal pick-up which is arranged in the housing in a manner secured against rotation and is arranged, with the housing, in a stationary receptacle in a stationary part of a rolling bearing or in a stationary component adjoining a rolling bearing, for example, an axle journal, where the housing has an outer design via which the rolling bearing sensor in the receptacle is secured against rotation in a form-fitting manner. The sensor may have a groove which runs in the axial direction and interacts with a screw or a projection. Alternatively, a securing element which predefines a defined angular position may be pushed onto the sensor.

Abstract: The condition of internal or hidden material layers or interfaces is monitored and used for control of a process that changes a condition of a material system. The material system has multiple component materials, such as layers or embedded constituents, or can be represented with multiple layers to model spatial distributions in the material properties. The material condition changes as a result of a process performed on the material, such as by cold working, or from functional operation. Sensors placed proximate to the test material surface or embedded between material layers are used to monitor a material property using magnetic, electric, or thermal interrogation fields. The sensor responses are converted into states of the material condition, such as temperature or residual stress, typically with a precomputed database of sensor responses.

Abstract: The present application discloses an integrated circuit comprising a circuit portion (100) coupled between first and second power supply lines (110; 120); a first switch (115, 135) coupled between the first power supply line (110, 120) and the circuit portion (100) for disconnecting the circuit portion from the first power supply line during an inactive mode of the circuit portion; and an arrangement (315, 335, 410) for, during said inactive mode, providing the circuit portion (100) with a fraction of its active mode power supply at least when averaged over said inactive mode to prevent the circuit portion voltage to drop below a threshold value. The present application further discloses a method for controlling such an integrated circuit.

Abstract: A gradient sensor of a component of a magnetic field comprising at least one elementary sensor comprising a deformable mass (31) equipped with a permanent magnet (32) having a magnetization direction substantially colinear to the direction of the gradient of the component of the magnetic field to be acquired by the sensor. The deformable mass (31) is able to deform under the effect of a force exerted on the magnet by the gradient, the effect of this force being to shift it, by dragging the deformable mass (31), in a direction substantially colinear to the component of the magnetic field for which the sensor has to acquire the gradient. The deformable mass (31) is anchored to a fixed support device (33) in at least two anchoring points (36) substantially opposite relative to the mass (31). The elementary sensor also comprises measuring means (35, 35.1, 35.2, 35.3) of at least one electric variable translating deformation or stress of the deformable mass (31) engendered by the gradient.

Abstract: An apparatus for estimating a property of an earth formation penetrated by a borehole, apparatus including: a carrier configured to be conveyed through the borehole; a transducer disposed at the carrier and configured to transmit and/or receive electromagnetic energy into and/or from the earth formation to estimate the property; wherein the transducer includes a plurality of inductively coupled elements in a series, each element configured to transmit and/or receive electromagnetic energy and at least a first connection to a first element in the plurality and a second connection to a second element in the plurality with at least one of the first element and the second element being disposed between end transducer elements in the series.

Abstract: A method for producing a current metering device with current conductor optionally made of aluminum or aluminum alloy, which has a middle section in the form of a bar and two end sections with flattened areas, and is bent between one end section at a time and the middle section, a magnetic module which has a bushing which holds the current conductor, and two copper or copper alloy sleeves which are applied at least to parts of the end sections of the current conductor.

Abstract: Various embodiments provide methods for testing a fuel cell interconnect including the steps of providing a fuel cell interconnect and performing a non-destructive test on the fuel cell interconnect comprising at least one of detecting a magnetic response of the interconnect, calculating a volume by optically illuminating the interconnect, detecting an acoustic response of the interconnect, and detecting a thermal response of the interconnect.

Abstract: A rotation angle detecting unit includes an IC package having a magnetism detecting element, a sealing body, and leads; and a covering member having a fixing part and a supporting part, which are integrally formed from resin. The element outputs a signal according to change of a magnetic field generated upon rotation of a magnetism generating device attached to a detection object. The sealing body covers the element. The leads are connected to the element, and project from the sealing body. The fixing part is fixed to a supporting body so that the covering member is attached to the supporting body. The supporting part supports the package such that the element can output the signal. The package is press-fitted into the supporting part after its formation, so that the package is supported by the supporting part with a predetermined pressure applied to part of an outer wall of the sealing body.

Abstract: An embodiment of a magnetic-field sensor includes a magnetic-field sensor arrangement and a magnetic body which has, for example, a non-convex cross-sectional area with regard to a cross-sectional plane running through the magnetic body, the magnetic body having an inhomogeneous magnetization.

Abstract: The invention relates generally to tracer particles for product identification and/or authentication. When incorporated into a manufactured item, that item can be subsequently authenticated by either detecting, or failing to detect, the tracer particle. The tracer particles of the invention are magnetically attractable, with micromarkings, and in some embodiments, are manufactured with food grade materials and of a particle size suitable for ingestion by humans. The particles can be analyzed qualitatively or quantitatively. In other aspects, the invention provides methods for the manufacture of the tracer particles, and in other aspects, provides methods for using the particles. Examples of products that can be tagged using the tracer particles of the invention include pharmaceuticals, animal feeds or feed supplements, and baby formula. Other applications include forensics, such as in explosive materials.

Abstract: 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. An apparatus embodiment includes a sensing circuit with at least one inductor having a magnetic core that saturates in the presence of a magnetic field having a prescribed flux density. The apparatus embodiment also includes an impedance measuring circuit connected to the sensing circuit. The impedance measuring circuit is adapted to measure impedance of the sensing circuit and to provide a signal when the impedance changes by a prescribed amount. According to an embodiment, the sensing circuit includes a resistor-inductor-capacitor (RLC) circuit. The impedance measuring circuit includes a transthoracic impedance measurement module (TIMM), according to an embodiment. Other aspects and embodiments are provided herein.

Abstract: The invention concerns a method comprising measurement on a fuel channel (14) of fuel assemblies (8) for nuclear boiling water reactors. The method comprises that: the measurement is done by the use of a non-destructive inductive eddy current measurement method, the measurement is done on a fuel channel (14) which has been used at least a certain time during operation in the core of a nuclear boiling water reactor, the measurement is done when the fuel channel (14) is located in water, the measurement is done on different places on the fuel channel (14), wherein through the method at least the hydride content of the fuel channel (14) at said places is determined. The method can be used in order to find out how shadow corrosion from a neighboring control rod influences the properties of the fuel channel (14).

Abstract: A position detection system for a detection object and a position detection method for a detection object that enable calibration without removing a detection object after the detection object is introduced into a detection space are provided.