Abstract: An eddy current probe testing apparatus structured to operate concurrently in a driver pick-up mode and said impedance mode is provided. The eddy current probe has two coils. The eddy current probe testing apparatus also includes a signal producing device, an output device, and a switch assembly. The switch assembly is structured to switch how an input signal from the signal producing device is provided to the two coils.

Abstract: A stent and a magnetoelastic resonant sensor are provided for sensor a physical characteristic in a bodily vessel or cavity. External coils interact with the sensor to induce a resonance that is responsive to the physical characteristic, such that the device may wirelessly measure physical characteristics such as mass loading effects and viscosity changes due to progression of pathology in implanted stents and stent grafts. The sensor may be fashioned from a magnetoelastic material and may be integrated near the inner sidewall of the stent. The sensor may take on a complex patterned shape to enhance the sensitivity and flexibility of the sensor structure. When the sensor is interrogated with a time-varying magnetic field, the sensor will mechanically vibrate and generate a magnetic flux which is maximum at a resonant characteristic determined by the mass load on the sensor and the viscosity of the fluid surrounding the sensor.

Abstract: A manipulator system comprising a column unit and a carriage supported by the column unit and configured to move along a desired axis of translation. A marker is provided on the column unit along the axis of translation. A sensor is associated with the carriage and configured to sense a position along the marker. A position display unit is configured to receive a position signal from the sensor and display a current position of the carriage along the axis of translation. In another aspect, the column unit defines at least one slot. A lock assembly is attached to the carriage and includes a tang axially moveable between an unlocked position wherein the tang is disengaged from the at least one slot and a locked position wherein the tang is engaged in the at least one slot.

Abstract: A non-contact sensor system is provided that comprises a first sensor element and a rotary member disposed proximate the first sensor element without physically contacting the first sensor element. The rotary member may be configured to be rotated about an axis Y by a shaft configured to pass through the rotary member along the axis Y at a value X. The non-contact sensor system further comprises a second sensor element disposed on the rotary member proximate the first sensor element without physically contacting the first sensor element, and the first sensor element and the second sensor element may be operatively coupled to facilitate sensing the value X.

Abstract: A rotation angle detecting device includes a housing, a rotating shaft rotatably held by the housing, a driving gear fixed to the rotating shaft, a driven gear engaged with the driving gear, a magnetic field generating part fixed in the driven gear, having a permanent magnet, and configured to generate a magnetic field, a magnetic sensor element configured to detect a change in the magnetic field due to a rotational movement of the magnetic field generating part, and a signal processor configured to process a signal from the magnetic sensor element for detecting a rotation angle of the rotating shaft. Each of teeth of the driving gear has a first circumferential width, each of teeth of the driven gear has a second circumferential width, and the second circumferential width is greater than the first circumferential width.

Abstract: A calibratable magnetic field sensor for sensing a first and a second spatial component of a magnetic field in a reference point, wherein the magnetic field includes a first and a second measurement field component and/or a first and a second calibration field component. The magnetic filed sensor includes a first sensor element arrangement including at least a first and a second sensor element for sensing the first magnetic field component, which includes a first measurement field component and/or a first calibration field component, with respect to a first spatial axis in the reference point. Furthermore, the magnetic field sensor includes a second sensor element arrangement for sensing the second magnetic field component, which includes a second measurement field component and/or a second calibration field component, with respect to a second spatial axis in the reference point.

Abstract: A logging tool and method to make subsurface measurements is disclosed, wherein the tool is placed within a borehole penetrating a formation. The tool has a transmitter antenna and a receiver antenna spaced apart along a longitudinal axis of the tool, and at least one of the transmitter or receiver antennas has a dipole moment that is non-coaxial with the longitudinal axis of the tool. The at least one non-coaxial antenna can rotate relative to the other antenna. Energy is transmitted from the transmitter antenna and a signal associated with the transmitted energy is measured at the receiver antenna while the at least one non-coaxial antenna rotates relative to the other antenna.

Abstract: An arrangement and method recognizes and classifies preferably hidden objects in object and/or human traffic. Objects relevant to security are recognized, located and tracked through the surroundings thereof in moving object and human traffic isolated in real time. Use is made of a combination of a field generator, the field of which is modified by at least one corresponding object within the scanned space, first sensors which repeatedly record the changes in the field and provide corresponding signals, second sensors which record defined surroundings of the object in real-time with relation to the first sensors and provide corresponding signals and analytical means which correlate and collate the signals from the sensors with each other and which give from the same the shape, spatial position and/or spatial orientation of the object.

Abstract: The invention relates to a localization system for localizing an underground object for an earthmoving machine comprising a working part. The localization system comprises a fastening component and a detector component. The fastening component can be arranged on the working part for example by means of magnets. The detector component is adapted to detect the object using an electromagnetic field that can be associated with the object and is arranged on the fastening component so as to swing like a pendulum, thereby effecting an alignment of the detector component under the effect of gravity. Optionally, the localization system comprises an arithmetic component for deriving a distance information of the object from the detected value. The localization system also comprises a display component for displaying and/or forwarding the detected value and/or the distance information.

Abstract: A wheel suspension for a vehicle which includes a wheel (8) and at least one suspension arm (2) that connects the wheel (8) to the body (7) of the vehicle. The arm (2) is pivotally mounted to the body (7) by an inner part (9) of a bearing (3) such that the arm (2) pivots about an axis (6). An angle measuring device senses rotation of the arm (2) about the pivot axis (6) relative to the body (7) and includes a signal generator (25) and a sensor (18). One of the signal generator (25) and the sensor (18) is attached to an outside of the arm (2) while the other is rigidly attached, via a bracket (15), to the body (7) at a distance from the suspension arm (2).

Abstract: A magnetic revolution counter for the unambiguous determination of a definable number of revolutions of a rotating element to be determined. The aim of creating such a revolution counter allowing a determination of any arbitrarily definable number of revolutions, for example up to values of N>4000 or more as defined, and enabling a cost-effective and small design, is achieved in that a plurality of sensor elements (30a to 30e) are provided, which are formed by closed loops having magnetic domains attached and guiding the same, containing at least one ferromagnetic, respectively soft magnetic, layer.

Abstract: A magnetic passive position sensor including a base plate and a cover which form a housing, a magnet that can be moved outside the housing, a resistance network that has several individual electric contacts, and a plurality of contact spring elements that are arranged within the range of motion of the magnet, are interconnected by a common base, and consist of a bending zone and a contact zone. The contact spring elements face the contacts of the resistance network in such a way that the contact zones can be moved from the magnets against the contacts of the resistance network, the contact zones of at least two contact spring elements being assigned to each individual contact of the resistance network. Two adjoining contact spring elements are mechanically interconnected.

Abstract: There is provided a small-size magnetic sensor for detecting the intensity of a magnetic field in three axial directions, in which a plurality of giant magnetoresistive elements are formed on a single semiconductor substrate. A thick film is formed on the semiconductor substrate; giant magnetoresistive elements forming an X-axis sensor and a Y-axis sensor are formed on a planar surface thereof; and giant magnetoresistive elements forming a Z-axis sensor are formed using slopes of channels formed in the thick film. Regarding the channel formation, it is possible to use the reactive ion etching and high-density plasma CVD methods. In addition, an insulating film is formed between the thick film and passivation film and is used as an etching stopper. Each of the slopes of the channels can be constituted of a first slope and a second slope, so that a magneto-sensitive element is formed on the second slope having a larger inclination angle.

Abstract: One embodiment relates to a sensor. The sensor includes a first magnet having a first surface and a second magnet having a second surface. A differential sensing element extends alongside the first and second surfaces. The differential sensing element includes a first sensing element and a second sensing element. In addition, a layer of ferromagnetic or paramagnetic material runs between the first and second magnets and spaces the first and second magnets from one another. Other apparatuses and methods are also set forth.

Abstract: A system and method for measurement of parameters of a conductive material, include generating an oscillating electromagnetic field (EMF) interacting with a sample portion from a remotely positioned source; measuring values of components of impedance of the electromagnetic; populating a system of equations including a theory of electromagnetism-based mathematical model of the electromagnetic system; solving the system of equations to calculate values of a distance between the sample portion and the source, thickness of the sample portion in proximity to a point of projection of the source onto the sample portion and electromagnetic properties of the sample portion; outputting the calculated values as the measured values; and repeating the steps of generating, populating, solving, outputting and repeating using the calculated values for the step of populating in place of the measured component values.

Abstract: The invention relates to a localization system for localizing an underground object for an Earthmoving machine comprising a working part. Said localization system comprises a fastening component and a detector component. The fastening component can be arranged on the working part for example by means of magnets. The detector component is adapted to detect the object using an electromagnetic field that can be associated with the object and is arranged on the fastening component so as to swing like a pendulum, thereby effecting an alignment of the detector component under the effect of gravity. Optionally, the localization system comprises an arithmetic component for deriving a distance information of the object from the detected value. The localization system also comprises a display component for displaying and/or forwarding the detected value and/or the distance information.

Abstract: Relating to a thin film lamination and a thin film magnetic sensor using the thin film lamination and a method for manufacturing the thin film lamination that realizes a thin film conducting layer having high electron mobility and sheet resistance as an InAsSb operating layer. A thin film lamination is provided which is characterized by having an AlxIn1?xSb mixed crystal layer formed on a substrate, and an InAsxSb1?x (0<x?1) thin film conducting layer directly formed on the AlxIn1?xSb layer, in which the AlxIn1?xSb mixed crystal layer is a layer that exhibits higher resistance than the InAsxSb1?x thin film conducting layer or exhibits insulation or p-type conductivity, and its band gap is greater than the InAsxSb1?x thin film conducting layer, and the a lattice mismatch is +1.3% to ?0.8%.

Abstract: 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 t

Abstract: A sensor measures the interaction of an applied magnetic field to an iron sample surface to determine whether the sample surface has been graphitized. The sensor measures the magnetic force resulting from the interaction or the magnetic flux density to determine the content of magnetic material in localized regions of the sample surface. The sensor includes a cantilever beam with a strain gauge for measuring magnetic force. Alternatively, the sensor includes a magnetic flux density sensor to measure magnetic flux density.

Abstract: A method and an apparatus for measuring the thickness of a metal layer. The metal layer has a resistivity (?1) that differs from the resistivity (?2) of the metal object. The apparatus includes a first device arranged to generate a magnetic field in close vicinity of the metal layer, and to generate a variation of the magnetic field so that a current is induced in the surface of the metal layer, a second device arranged to measure the changes of the magnetic field outside the metal layer due to the induced current during a time period that is longer than the time it takes for the current to propagate through the metal layer, and a computing unit to determine the thickness of the layer based on a mathematical relation between the thickness of the layer and the measured values of the changes of the magnetic field.