Abstract: An improved system for magnetic position tracking of a device includes a magnetic transmitter, a magnetic sensor, a computing system and a polarity inverter. The magnetic transmitter includes at least one transmitter coil that outputs a transmitted magnetic field having a time derivative component. The magnetic sensor includes at least one sensor coil that has coil terminals having a polarity, and the sensor coil is responsive to the time derivative component of the transmitted magnetic field and outputs a sensor signal. The computing system computes position and angular orientation data of a device based on the sensor signal and the polarity inverter is configured to connect to the coil terminals and to cause the polarity of the coil terminals to be reversed according to a switching signal.

Abstract: A resonance coil includes plural unit coils where directions of magnetic fields which are formed by flowing of electric current are the same, in which the plural unit coils are arranged around a coil center line, and when the resonance coil is seen in a direction of the coil center line, the coil wire that forms the resonance coil is formed so as not to be overlapped.

Abstract: An induction detecting type rotary encoder includes: a stator; a rotor disposed opposite the stator; a first transmitting coil that is provided in the stator and includes a first inner circumference coil and a first outer circumference coil; a second transmitting coil that is provided in the stator and includes a second inner circumference coil and a second outer circumference coil; first and second receiving coils provided in the stator; and first and second magnetic flux coupling bodies provided in the rotor. The closest distance between the first inner circumference coil and the second magnetic flux coupling body is shorter than that between the first outer circumference coil and the second magnetic flux coupling body. The closest distance between the second inner circumference coil and the first magnetic flux coupling body is shorter than that between the second outer circumference coil and the first magnetic flux coupling body.

Abstract: The present invention provides a magnetic induction pad. The magnetic induction pad includes a deformation body and a plurality of magnetic induction modules. The interior of the deformation body includes a filling space that is in connection with the outside via at least one gas nozzle. The external of the deformation body includes a first surface and a second surface. The first surface and the second surface include a plurality of first bag bodies and a plurality of second bag bodies, respectively. The plurality of first bag bodies are mutually arranged to form a first pattern. The plurality of second bag bodies are mutually arranged to form a second pattern that are the same as the first patterns, so as to enable the position of each of the plurality of first bag bodies on the first surface to have a corresponding arrangement to each of the plurality of second bag bodies of the second surface. The plurality of magnetic induction modules includes a group of magnetic members and a group of induction members.

Abstract: Deep reactive ion silicon etching of a device wafer, laser-induced release of individual dies, and individual placement of the dies on flexible substrates facilitate formation of circuits having relatively large external inductors for powering devices such as RFID devices. Small flexible tabs enable die-inductor connection. The absorption properties of both an adhesive layer and an ablation layer may be employed to facilitate debonding of individual dies from a glass handler without damaging integrated circuits associated with the dies. Die packs including cavities for accepting individual dies facilitate fabrication processes using dies having small dimensions.

Abstract: An inductive position-measuring device includes a scanning element and a graduation element that are movable relative to each other in a first direction. The scanning element includes exciter conductors and three receiver tracks. The first and the second receiver track are disposed at a distance relative to each other, and the third receiver track is located between the first and the second receiver track. The graduation element includes two graduation tracks which are disposed at a distance relative to each other, and which have different graduation periods. Furthermore, electromagnetic fields generated by the exciter conductors are able to be modulated by the graduation tracks, so that a relative position in the first direction is detectable by the first and the second receiver track, while a relative position in a second direction, which is oriented orthogonally with respect to the first direction, is detectable by the third receiver track.

Abstract: A sensor apparatus for detecting a position of an axially movable camshaft is provided. The sensor apparatus includes a coil block including a detection coil wound along an axial direction of the camshaft to define a bore into which the camshaft is inserted, and a control unit electrically connected to the detection coil and designed to output a signal based on a change in inductance of the detection coil.

Abstract: A sensor includes a magnetic piece with a magnetic array, a conductive coil and ferromagnetic object. The magnetic array provides a spatially modulated magnetic field that is concentrated in the near-field. A processor calculates the ferromagnetic object's speed based on voltage induced in the conductive coil. The ferromagnetic object's movement through the magnetic field causes a change in the magnetic flux, and the rate of change is proportional to the induced voltage.

Abstract: Sensor with a one-layer or multi-layer sensor element operating in a contact-free manner and a housing 14 comprising an electric/electronic connection and, in given cases, electronic components, where the sensor element comprises a coil arrangement 1 whose windings 3 have a defined line width 5, line thickness 6, and line spacing 7 per layer 2 and whose layers 2 have a defined layer thickness 8b and, in given cases, a defined layer spacing 8a, characterized in that the sensor element is built up from ceramic layers in the sense of multi-layer ceramics and that with respect to traditional coil arrangements the layer thickness 8b or the layer spacing 8a is reduced and the number of windings per cross-sectional surface area is increased.

Abstract: Disclosed is a near-surface object sensing device, including a printed circuit board, a plurality of magnetic sensors arrayed on the printed circuit board to sense the magnetic field of an external magnetic object and generate a magnetic sensing signal, a multiplexer connected to the magnetic sensors for selecting and outputting the magnetic sensing signal, and a microprocessor connected to the multiplexer for receiving the magnetic sensing signal, wherein the microprocessor includes a sampling algorithm module for converting the magnetic sensing signal into a magnetic field distribution image, and a six-dimensional coordinate-calculating module for calculating six-dimensional coordinates of the external magnetic object. The sensing device of the invention is compact, low energy consuming and can accurately provide users with a convenient and intuitive user interface with three dimensional locations and position information in a near-surface space.

Abstract: This disclosure provides systems, methods and apparatus for detecting wireless charging transmit characteristics. One aspect of the disclosure provides a method of detecting a transmit characteristic in a wireless power transmission device. The device includes a series element electrically coupled to a transmit coil. The method includes determining real and imaginary components of a first voltage at a first terminal of the series element. The method further includes determining real and imaginary components of a second voltage at a second terminal of the series element. The method further includes determining real and imaginary components of a current through the series element, based on the determined first and second voltages. The method further includes determining transmit characteristics such as nodal voltages, currents, power and impedances based on determined voltages and currents.

Abstract: The present invention relates to a system and a method for improving the use of energy in an electric motor by inducing currents generated from magnets and/or electromagnets that result in an increase of primary power and creating, directing and introducing a counter current obtained from primary coils of the motor into a resonant LC circuit which is introduced as a transient secondary process to increase the overall efficiency of the motor. Furthermore, the motor produces rotational torque without using alternating magnetic polarity, but rather magnetic compression that utilizes permanent magnets arranged in a dipolar manner around an axial plane and, in another embodiment, uses ferrous cores arranged in a dipolar manner around an axial plane or alternatively, electromagnetic dipoles arranged in a dipolar manner around an axial plane.

Abstract: A rotation detecting device includes rotation detecting device includes a first supporting member and a second supporting member disposed around an axial line. The rotation detecting device further includes a pair of magnetic field generating portions for generating a magnetic field in a region between the first supporting member and the second supporting member. The rotation detecting device further includes at least one magnetic field detecting portion attached to the second supporting member for detecting the magnetic field. The rotation detecting device further includes a first magnetic member for covering one end portion of the magnetic field detecting portion and a second magnetic member for covering the other end portion of the magnetic field detecting portion.

Abstract: Wireless strain and displacement sensors wirelessly monitor structural health and integrity, and are made by printing inductor-interdigital capacitor sensing circuits on a variety of substrates, including ceramic substrates, with thermally processable conductive inks. Sensors of the invention can be employed to detect strain and displacement of civil structures, such as bridges and buildings. The sensors include sensing elements that are mounted or printed on stiff, inflexible substrates, which prevent the sensing elements from bending, stretching, or otherwise warping when the sensor is strained. An interlayer between the sensing elements allows the sensing elements to move with respect to each other during application of strain. Thus, strain causes the sensing elements to move but not to deform, causing changes in sensor resonance that can be detected through wireless radio-frequency interrogation.

Abstract: A method and apparatus for aligning a vehicle with an inductive charging system is characterized by the addition of alignment coils to a secondary coil on the vehicle. For efficient inductive charging, it is necessary that the vehicle mounted secondary coil be aligned with a stationary primary coil of a transformer of the inductive charging system. When the primary coil is energized, it produces a magnetic field which induces a voltage in the alignment coils as a function of the proximity of the alignment coils to the central axis of the primary coil. The voltage differential between opposed pairs of alignment coils is determined by a comparator which then generates a directional signal which can be used by the operator of the vehicle to position the vehicle for closer alignment of the vehicle secondary coil with the primary coil and more efficient charging.

Abstract: The present invention uses a sensor to determine when a pressure plate and a clutch plate of a dual clutch transmission system are in contact with one another. The assembly includes a housing having a plurality of pistons connected to both the clutch plate and pressure plate. The pistons contain either magnets or couplers and are positioned adjacent one another separated by either a Hall effect sensor or an inductive sensor. As the pressure plates and clutch plates come into contact with one another the pistons move within the housing and said movement is detected by the sensor. The sensor determines if the pressure plate is in contact with the clutch plate and if the clutch plate or the pressure plate has traveled any linear distance.

Abstract: In a position detection device of a type that omits a secondary coil, various inconveniences arising from the use of a voltage-dividing resistance (fixed resistor) are eliminated. At least two pairs of coils are provided. A magnetism-responsive member are placed so as to effect relative displacement in relation to the coils, the relative position of the member in relation to the coils varies with a position of a detection object, and impedance of each coil is varied with the relative position. The impedance changes of two coils constituting each one of coil pairs present characteristics of mutually opposite phase characteristics. For each coil pair, the two coils constituting the pair are connected in series with each other, and from a connection point thereof, a voltage-divided output voltage according to the impedance of the two coils is taken out as a detection output signal for the pair.

Abstract: A magnetic tracking system includes a first set of magnetic field generators configured to produce a first magnetic field having a first shape within a three dimensional region and at least a second set of magnetic field generators configured to produce a second magnetic field having a second shape within the three dimensional region. The system also includes a computing device configured to compute a position of a sensor within the three dimensional region based on the first and second magnetic fields being detected by the sensor.

Abstract: Techniques for coupling with devices that convert displacements into differential voltages and improvement of the sensitivity of such devices. A transducer operates based on changes of inductances between primary and secondary of a transformer to produce a differential signal that includes a noninverted signal and an inverted signal. A switch receives the noninverted signal and the inverted signal. A processor creates a square wave signal for driving the transducer input, and also digitally creates an inverted transducer output. A filter operates to filter the square wave output from the processor to produce a substantially single frequency signal at a specified timing having a specified phase relationship relative to the first phase inversion signal based on instructions that are executed by the processor.

Abstract: Methods, apparatus, and systems are provided for detecting the presence of a substrate in a load cup. The invention includes a proximity sensor having a detection pad disposed below a contact surface of a load cup assembly and a target disposed on a lever member and adapted to move toward the detection pad when a substrate is placed on the lever member and adapted to move away from the detection pad when a substrate is removed from the lever member. Numerous additional aspects are disclosed.

Abstract: The present invention has an object to provide a lightning current detection sensor that has a configuration resistant to high voltage and high current in a lightning strike and has high sensitivity and high resolution. In a lightning current detection sensor 10, an insulation-coated wire 22 wound in multiple turns is collectively covered with a base tape 21 and a cover tape 23. Thus, even when the insulation-coated wire 22 is wound in multiple turns to increase sensitivity, a minute area can be detected to increase resolution. Also, with the base tape 21 and the cover tape 23 covering the insulation-coated wire 22 and also a shield portion 12 made of an insulating material and a gap 40 formed between the shield portion 12 and the coil portion 20, a sufficient shielding property is ensured and detection with high accuracy can be performed against high current and high voltage without capacitative coupling.

Abstract: A resolver includes a resolver rotor that is provided in an outer circumference of the motor shaft and rotates integrally with the motor shaft, a resolver stator that has a plurality of coils and surrounds an outer circumference of the resolver rotor such that a rotational angle detection gap is provided between the outer circumference of the resolver rotor and the resolver stator, a housing that houses the resolver rotor and the resolver stator and has an opening for extracting wires of the coils in an outer circumference side of the resolver stator, a wire harnessing member provided to extend from the resolver stator to an outer side of the housing through the opening and consolidates wires of a plurality of the coils, and a cover member that covers a gap between the opening and the wire harnessing member.

Abstract: A rotation sensor assembly includes a rotated component rotatably coupled with a base. The rotation sensor assembly includes a transmitter and a receiver. The transmitter is coupled with the base or the rotated component. The transmitter generates a magnetic field including a sinusoidally time-varying dipole near-field corresponding to an excitation signal having a first phase value. The receiver is coupled with the other of the rotated component or the base. The receiver detects the magnetic field and generates a reception signal based on the magnetic field with a second phase value corresponding to a rotation angle of the rotated component relative to the base. The receiver is mechanically isolated from the transmitter. A rotation angle module is coupled with the transmitter. The rotation angle module, for instance a phase detector, measures the rotation angle of the rotated component based on the phase difference in the first and second phase values.

Abstract: A magnetic bearing apparatus is proposed having a stator (2) which includes a winding (22) for the generation of a magnetic control field, having a rotor (3) which can be magnetically journalled with respect to the stator (2) and also having a sensor device (5) configured as an eddy current sensor for the determination of the distance between the stator (2) and the rotor (3), wherein the sensor device (5) includes at least one sensor element (51) configured as an inductor and at least one capacitor (53) which forms an electrical resonant circuit with the inductor, and also having a monitoring unit (6) for the control of the sensor device (5) and for the evaluation of the detected signals. The inductor is arranged electrically in series to the capacitor (53) so that the electrical resonant circuit is a serial resonant circuit.

Abstract: A blowout preventer for sealing a tubular of a wellbore is provided. The blowout preventer has a housing having a bore therethrough for receiving the tubular, at least one ram slidably positionable in the housing (each of the rams having a ram block for sealing engagement about the tubular), an actuator for selectively driving the ram block (the actuator comprising a piston slidably positionable in a cylinder), and a monitor for detecting the piston therein. The monitor has a visual indicator on an exterior of the cylinder. The visual indicator is operatively coupled to the piston for displaying a position of the piston as the piston travels within the cylinder whereby a position of the ram may be determined.

Abstract: Inductive sensor module comprising a coil arrangement and a carrier, on which electronic components are arranged, wherein the coil arrangement is arranged on a first side of the carrier and the electronic components are arranged on a second side of the carrier directed away from the first side.

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: A sensor assembly for a vehicle electronic braking system including a housing, at least one linear sensor, the at least one sensor contained within the housing, the linear sensor adapted to measure the linear distance traveled of a brake pedal. The assembly further includes a rotary sensor, the rotary sensor also contained within the same housing, the rotary sensor adapted to measure rotary motion of a DC motor in an the electronic braking system. The rotary sensor and the at least one linear sensor each in communication with a brake control unit. The at least one linear sensor and the at least one rotary sensor is encapsulated, either together or separately. The at least one linear sensor is a Hall-effect sensor. A wake up switch circuit is integrated with at least one of the linear sensors to wake up the system when the driver depresses the brake pedal in the electronic braking system. The rotary sensor is an inductive sensor.

Abstract: The invention relates to a method and an arrangement for determining a position of a first component (14) such as a piston rod in relation to a second component (12) such as a hydraulic, electrical or pneumatic cylinder, wherein at least one first magnetically scannable structure (34) such as a measurement strip formed on a surface (18) of said first component (14) is detected by means of at least one first magnetic flux sensor (22) connected to the second component (12) during a relative movement between the first component (14) and the magnetic flux sensor (22).

Abstract: Disclosed herein are systems and methods for detecting motion of an object, such as the paw of rat. A tag comprising an inductive element and a capacitive element may be attached to the object and the motion detected by monitoring the affect of the tag on a time-varying magnetic field.

Abstract: A hand-held check fixture to indicate excessive play in a pitch change link ball joint is provided. The check fixture can include a first member for attachment to a first portion of the pitch change link, a second member for attachment to a second portion of the pitch change link, and a gage to indicate movement of the first member relative to the second member. The gage is adapted to indicate the clearance between a pitch change link ball bearing and a pitch change link knuckle in the axial direction and/or in the radial direction. The check fixture can assist in evaluating the flightworthiness of each pitch change link on a rotor assembly with relative ease and without requiring the complete removal of each pitch change link from the rotor assembly.

Abstract: Contactless measurement sensor for measuring at least one of a distance to an object to be sensed, a motion with respect to an object to be sensed, a speed with respect to an object to be sensed, a torque applied to an object to be sensed and a force applied to an object to be sensed the contactless measurement sensor comprises a first magnetic field generating unit being adapted for generating a magnetic field towards the object to be sensed, a first magnetic field detector unit being adapted for detecting a first magnetic field which field being generated by the first field generator unit and being influenced by a respective distance, motion, speed, applied torque and applied force to be measured, wherein the first magnetic field detector unit is further adapted for outputting a first signal being representative for the detected magnetic field, and an evaluating unit being adapted for evaluating a signal strength of the first signal and determining the respective distance, motion, speed, applied torque and

Abstract: The invention relates to a device for detecting defects during sealing of a package comprising a foil. The invention also relates to a method for detecting defects during sealing of a package comprising a foil, particularly by making use of the device according to the invention.

Abstract: Circuits for inductive position sensor are described.

Abstract: Methods and systems of processing sensor signals to determine motion of a motor shaft are disclosed. This disclosure relates to the processing of sequences of pulses from a sensor for computing the motion of an electric motor output shaft. Furthermore, this disclosure relates to the processing of two sequences of pulses from sensor outputs, which may be separated by only a few electrical degrees, to compute the motion of an electrical motor output shaft while using a limited bandwidth controller. Motor shaft direction, displacement, speed, phase, and phase offset may be determined from processing the sensor signals.

Abstract: The subject invention relates to an air spring height sensor. The air spring height sensor of this invention comprises a height measuring signal transmitter (102) and a receiver (101). The height measuring signal transmitter is adapted for transmitting a height signal. The receiver is adapted for sensing the height signal transmitted by the height measuring signal transmitter. The height signal indicates a distance between the height measuring signal transmitter and the receiver.

Abstract: A measurement tool includes a rotation stage supporting an workpiece support, a thickness sensor overlying a workpiece support surface; a translation actuator coupled to the thickness sensor for translation of the thickness sensor relative to the workpiece support surface; and a computer coupled to control the rotation actuator and the translation actuator, and coupled to receive an output of the thickness sensor.

Abstract: The input device has a printed circuit board (5) to which a plurality of coils (L1-L8) has been fitted which, together with a capacitor (C2), each form a frequency-determining element of an oscillator (1). The coils (L1-L8) are arranged so as to be distributed along a path (K), which may also be a circular path. A movable magnet portion (M) can be displaced relative to the printed circuit board (5). At least one further stationary magnet portion (M1-M8) is mounted on the printed circuit board (5), which is opposite the movable magnet portion (M).

Abstract: Identifying measurement subset comprising a disturbed measurement disturbed by a magnetic disturber includes emitting and measuring magnetic fields using mono-axial source/mono-axial transducer pairs to obtain real measurements distinguished by position of a source used to emit the field, position of transducer used to measure the field, and field frequency, a source being tied to a mobile object and the transducer tied to a frame of reference in which a position of the mobile object is to be expressed (or vice versa), estimating position of the object in the reference frame based on an observer and involving only a first subset of the measurements, estimating the measurements based at least in part on the estimated position Pi and on a direct model linking the object's position to the measurements, and determining whether or not the first measurement subset comprises a disturbed measurement by comparing the estimated and real measurements.

Abstract: A voltage detector for detecting a voltage generated in a second resonant coil that is disposed to face a first resonant coil and that performs at least one of electric power transmission and electric power reception to and from the first resonant coil in a contactless manner by means of electromagnetic resonance includes: a first high-impedance element having one end connected to one end of the second resonant coil; a second high-impedance element having one end connected to the other end of the second resonant coil; a low-impedance element connected between the other end of the first high-impedance element and the other end of the second high-impedance element and having an impedance smaller than each of those of the first and second high-impedance elements; and an output terminal for outputting a signal associated with a voltage applied across the low-impedance element.

Abstract: An inductive detection encoder according to the present invention includes: first and second members which are oppositely disposed so as to relatively move in a measurement direction; a transmitting coil formed in the first member; a magnetic flux coupled body which is formed in the second member and coupled with a magnetic field generated by the transmitting coil; and a receiving coil formed in the first member and having receiving loops. At least one of the transmitting coil and the receiving coil has a specific pattern that impairs the uniformity and periodicity of a pattern; and a dummy pattern formed in a position corresponding to a specific phase relationship of a cycle generated by the track with respect to the specific pattern.

Abstract: Inductive displacement sensor includes a coil and a target which is movable relative to the coil in a direction of movement, wherein an inductance of the coil is dependent on a position of the target relative to the coil, wherein the coil and the target at least partially overlap in the direction of movement.

Abstract: An operation input apparatus includes an operating unit that is displaced by the action of an operation input; an actuator output shaft that is displaced in the same direction as the operating unit by the action of the operation input; an actuator that moves the operating unit via the actuator output shaft; and a detecting element that outputs a signal corresponding to an amount of displacement of the operating unit.

Abstract: Embodiments of the invention broadly contemplate systems, methods, apparatuses and program products that provide position tracking using a simple, low frequency oscillator that is attached to an object to be tracked, and one or more receiving stations that are placed around the area in which the object moves. Embodiments of the invention enable position tracking of the object using light weight equipment which minimally impacts the object's natural state.

Abstract: A position detecting system detects and responds to the movement of a target through a sensing domain area of a plane. The movement causes the amount of the target that lies within a sensing domain area to change. A portion of the target always lies within at least one of the sensing domain areas of the plane.

Abstract: In a rotation angle detection apparatus, a signal detected by a magnetoresistive element is digitalized before being subjected to subtraction of the optimum correction parameter therefrom in a subtractor, the optimum correction parameter being stored in advance in a memory. Note that during the initial transmission at the time of activation, the data size “n” of a detection target obtained by a CPU from a control device is transferred to the memory, so that the optimum correction parameter for the data size of the detection target is selected. With the above, the detection unit can relatively readily cope with a request for enlargement or the like of a through hole size made by a machine side, and detection accuracy is not deteriorated and an error in absolute position processing is reduced when the curvature of the detection target is changed.

Abstract: A position sensor arrangement has a transformer based position sensor and a cable peaking correction apparatus. The cable peaking correction apparatus is coupled to at least one of a transformer based position sensor excitation input and the plurality of outputs from the transformer based position sensor.

Abstract: This inductive position sensor includes: a primary winding, and at least two secondary windings (4, 6) each constituted by several turns (8) produced on two layers of a printed circuit board. A secondary winding has turns (8) each having substantially the same shape, aligned in a direction referred to as longitudinal, each time with an offset between them. The turns (8) each have a first globally concave part (12) disposed on one layer of the printed circuit board and a second globally concave part (14) disposed on the other layer of the printed circuit board, the first part of a turn is connected to the second part of the same turn by a first via (36a) passing through the printed circuit board, the first part of a turn is connected to the second part of an adjacent turn by a second via (36b) passing through the printed circuit board.

Abstract: The invention relates to a motor vehicle gearbox position detector comprising a sensor (3) designed to cooperate with a moving target (5) connected to a gearbox ratio actuation element so as to provide at least one analog signal representative of the position of the neutral point of the gearbox, characterized in that it additionally comprises a unit for processing the signal (9) comprising an analog-to-digital converter designed to convert the analog signal into a digital output signal (17) so as to provide periodic predefined information corresponding to the position of the neutral point only when, on the one hand, the target (5) is in the neutral point position and, on the other hand, when the sensor (1) is in the normal operating state.

Abstract: An apparatus including a controller, a workpiece transport in communication with the controller having a movable portion and a transport path, and a multi-dimensional position measurement device including at least one field generating platen attached to the movable portion and at least one sensor group positioned along the transport path and in communication with the controller, the field generating platen is configured for position measurement and propelling the movable portion, each sensor in the at least one sensor group is configured to provide but one output signal along a single axis corresponding to a sensed field generated by the at least one field generating platen and the controller is configured calculate a multi-dimensional position of the movable portion based on the but one output signal of at least one of the sensors in the at least one sensor group, the multi-dimensional position including a planar position and a gap measurement.