Abstract: The invention relates to a counting sensor for counting the number of revolutions or of linear displacements of an object, wherein the counting sensor comprises: one single Wiegand module; at least one sensor element; a processing electronics connected to the sensor element; and a permanent magnet arrangement, which is movable relative to the Wiegand module; wherein the processing electronics is configured to obtain (i) direction informations indicating whether the permanent magnet arrangement moves in one direction or an opposite direction, and (ii) magnetic pole informations; and a data storage for storing a value, which indicates the number of the revolutions or of the linear displacements; wherein the processing electronics is configured: (i) to determine, on the basis of the direction information and the magnetic pole information, the number of the revolutions or of the linear displacements of the object and to store the corresponding value in the data storage, (ii) to perform, on the basis of a seque

Abstract: In a magnet assembly, and an angle detection system embodying such a magnet assembly, for detecting a rotational angle of a rotating shaft, first and second magnet portions are mounted on the shaft, and have geometrical shapes and respective magnetizations with various symmetry features.

Abstract: A rotational movement detection device includes a rotating member including a through hole passing therethrough from a first surface to a second surface opposite the first surface, the rotating member rotating around the through hole to generate a magnetic field around the rotating member, a rotation angle detection part that detects a rotation angle of the rotating member, a movement detection part that detects a movement along a rotational axis of the rotating member, and a holding part including a guide part and an arrangement part formed integrally therein, the guide part being inserted into the through hole to guide the rotation of the rotating member and to hold the rotating member, the arrangement part having thereon the movement detection part arranged facing a side surface of the rotating member.

Abstract: A camera module including a housing; a lens barrel having a lens and reciprocating in the housing; a magnetic member coupled with the lens barrel; an electromagnetic member coupled with the housing and generating a magnetic field so that the lens barrel moves along an optical axis; and a Hall sensor in the housing and detecting a change in magnetic field according to a position of the magnetic member before electric power is outputted to the electromagnetic member. A control unit sets a current position of the magnetic member as a first target position, setting an initial position for driving auto focusing as a second target position, aligning the lens barrel to the first target position by controlling electric power supplied to the electromagnetic member, and then moving the lens barrel to the second target position by supplying electric power to the electromagnetic member.

Abstract: Apparatuses, methods and systems for an event-triggering apparatus are disclosed. One embodiment of the apparatus includes a sensor element operative to sensing a magnetic field, and apparatus control circuitry, wherein the apparatus control circuitry receives a representation of the sensed magnetic field. The apparatus control circuitry is operative to sense a deviation in the sensed magnetic field greater than a predetermined threshold, and trigger an event after sensing the deviation of the sensed magnetic field greater than the predetermined threshold.

Abstract: A throttle pedal assembly comprises a housing having a first and second side, top, bottom, front and back walls; a main chamber open to the front and bottom of the housing and a sensor cavity. A pedal assembly comprises a pedal, a pedal arm, and a head at an end of the pedal arm rotatable a pivot axis. A magnet is operatively connected to the pedal assembly to rotate on the pivot axis as the pedal assembly rotates about the pivot axis. A Hall effect sensor assembly mounted in the sensor cavity to be proximate the magnet yet separated from the magnet. The cavity and Hall effect sensor assembly are respectively shaped and sized such that the Hall chip and the magnet lay on a common axis such that the Hall chip and the magnet are coaxially aligned. The sensor cavity is sealed to prevent contaminants from entering the cavity.

Abstract: The invention relates to measurement technology and is used to determine the absolute displacements of objects in metallurgy, automotive industry, warehouse and production logistics, and in the automation of production. The technical result is achieved when the following steps are performed: the displacement transducer is mounted on the object; signal sources are mounted along the trajectory of the object displacement; on each section of the trajectory, an arrangement of the signal sources is provided which is determined by changing the number of signal sources and/or the distance between any two signal sources; a signal is sent to the moving object with transducer; an output signal is received from the transducer regarding the location of the signal sources located within the measurement range; the object location is determined; furthermore, the displacement is measured at a distance exceeding the length of the active zone of the transducer.

Abstract: A position detector includes a magnet disposed between first ends of first and second magnetic flux transmission parts and a magnet disposed between second ends of the first and second magnetic flux transmission parts. The position detector also includes a Hall IC that is positioned within a gap and moves relative to a rotating body. The Hall IC detects a density of the magnetic flux from the first and second magnetic flux transmission parts and outputs a signal according to the density of the magnetic flux passing therethrough in order to detect a position of a detection object. A minimum magnetic flux density position within the gap may be shifted to a position having the highest detection accuracy such that the position detection accuracy of the detection object is improved.

Abstract: A magnetic field sensor and an associated method use one or more magnetoresistance elements driven with an AC mixing current and experiencing an AC mixing magnetic field to generate a DC voltage signal or a DC voltage signal component related to a slope of a transfer curve of the one or more magnetoresistance elements.

Abstract: A relative angle sensor includes a stator unit, a magnet unit, and a collector unit. The stator unit includes a stator shaft coupled to and disposed between an upper stator ring and a lower stator ring. Each of the stator rings includes a plurality of teeth with slots defined between adjacent teeth. The stator unit defines a channel between the upper and lower stator rings and outside of the stator shaft. The magnet unit is disposed in the channel and includes at least one magnet. The magnet unit and/or the stator unit is configured to rotate relative to the other of the magnet unit or the stator unit. The collector unit is configured to receive magnetic flux routed from the magnet unit. The magnetic flux routed through the collector unit is responsive to a relative rotational position between the magnet unit and the stator unit.

Abstract: A back-biased magnetic field sensor uses one or more magnetic field sensing elements upon a substrate, each outside of a substrate region in which magnetic field lines are near perpendicular to the substrate and outside of which magnetic field lines are not to the substrate. The back-biased magnetic field sensor can sense an approaching and/or a retreating ferromagnetic object.

Abstract: An electronic comparison circuit can identify at least three conditions of an input signal received by the electronic comparison circuit. A first one of the at least three conditions occurs when a value of the input signal is less than a first threshold value, a second one of the at least three conditions occurs when a value of the input signal is greater than the first threshold value and less than a second threshold value, and a third one of the at least three conditions occurs when a value of the input signal is greater than the second threshold value. A magnetic field sensor can use the electronic comparison circuit.

Abstract: A rotation detection device for detection of rotation of a vehicle pedal (2) around an axis of rotation, comprising a movable first part, which accompanies the rotational motion of the pedal, a stationary second part, a magnetic field sensing component arranged in the first or in the second part and a magnetic element arranged in that part of the first or the second part that does not comprise the magnetic field sensing component when the first and the second part are moving in relation to each other. The first part comprises a base part and at least one arm protruding from the base part, where at least one arm at least partly surrounds the second part.

Abstract: The invention concerns an angle sensor and a method of measuring an angle of a magnetic field. The angle sensor is configured to measure a direction of a magnetic field in a plane, comprising a first magnetic field sensor having a first sensitivity direction and delivering a first voltage, a second magnetic field sensor having a second sensitivity direction and delivering a second voltage, a first current source supplying a first biasing current to the first magnetic field sensor, a second current source supplying a second biasing current to the second magnetic field sensor (2), and electronic circuitry configured to adjust the first biasing current and the second biasing current in such a manner that a sum of the first voltage and the second voltage equals 0.

Abstract: A detection device including a base, a bracket, a swing lever, a first limit lever and a first magnetic sensor is disclosed. The bracket is on the base, the swing lever is swingably on the bracket via a swing shaft and the swing lever is partitioned as a toggle section and a trigger section by the swing shaft, the weight of the trigger section being greater than that of the toggle section. An end of the trigger section is provided with a magnet, and an end of the toggle section is higher in an initial state than an upper edge of the bracket. The first limit lever is on the bracket for limiting the trigger section. The first magnetic sensor is on the bracket and in the vicinity of a virtual extension of the trigger section when the trigger section is limited by the first limit lever.

Abstract: A rotational angle sensor for determining an angular position of a reference component with respect to an axial direction includes a magnet retaining component having a magnet. The magnet retaining component is connectable to the reference component via an interference-fit connection so as to rotate with the reference component while being axially displaceable relative to the reference component. The rotational angle sensor also includes a sensor attached to the reference component such that it can rotate with respect to the reference component, and the sensor is configured to detect a magnetic field generated by the magnet. Also included is a spring element configured to exert an axial force on the magnet retaining component so that an axial spacing between the sensor and the magnet assumes a predetermined value.

Abstract: Methods and apparatus for positioning a magnetic field sensor IC package having a first channel for a planar magnetic field sensing element and a second channel for vertical magnetic field sensing element in relation to an axis of a ring magnet to provide a desired phase relationship between the first and second channels. In embodiments, positioning the sensor includes an offset angle and a displacement with respect to a centerline of the ring magnet.

Abstract: Magnetic sensor modules, systems and methods are provided, configured to detect a rotation of an object. A magnetic sensor module includes an axially polarized back bias magnet that generates a radially symmetric bias magnetic field about a center axis of the axially polarized back bias magnet in a sensor plane, and a magnetic sensor including a plurality of sensor elements arranged in the sensor plane of the magnetic sensor and are configured to generate measurement values in response to sensing the radially symmetric bias magnetic field. The plurality of sensor elements are arranged on a circumference of a circle at equidistant angles about the center axis of the axially polarized back bias magnet. The plurality of sensor elements are grouped into a plurality of pairs such that each pair has a sensitivity axis sensitive to a different in-plane magnetic field component of the radially symmetric bias magnetic field.

Abstract: A magnetic reader for identifying an object includes a hardware processor, a memory storing multiple magnetic field profiles, and a magnetic field detector. The hardware processor of the magnetic reader is configured to detect, using the magnetic field detector, a magnetic field produced by one or more elements incorporated into the object, and to measure, using the magnetic field detector, one or more characteristics of the magnetic field. The hardware processor of the magnetic reader is further configured to compare the one or more characteristics of the magnetic field to one or more of the multiple magnetic field profiles stored in the memory, and to identify the object based on the comparison.

Abstract: A Halbach array is formed from first to third magnets provided to a rotor. Of shortest straight-line distances (clearance distances) between the first to third magnets and a Hall element as facing the first to third magnets after moving relative to the first to third magnets, the shortest straight-line distance between the second magnet and the Hall element is set the longest. In other words, the second magnet is placed at a position offset from the first magnet. In addition, the second magnet may be offset from the third magnet.

Abstract: A position measurement system includes a material measure and a sampling device, arranged movably with respect to one another relative to a measurement direction. The material measure includes a multiplicity of markings arranged in a row relative to the measurement direction. The sampling device includes a transmitter winding arrangement and a plurality of receiver coils. The receiver coils are arranged in a row relative to the measurement direction such that inductive coupling between the transmitter winding arrangement and the receiver coils is dependent on a position of the sampling device relative to the material measure. The sampling device further includes an operational amplifier having a first and a second output terminal. The receiver coils are connected via a switching device to the operational amplifier such that a single coil or a pair of receiver coils is configured for selective connection on an input side to the operational amplifier.

Abstract: Embodiments relate to magnetic field sensors, such as gradiometric magnetic field angle sensors with generally on-axis arrangements of sensor elements relative to a rotation axis of a magnet. In one embodiment, an angle sensor is arranged on-axis with respect to the rotation axis of a magnet that generates a magnetic field that can be detected by the angle sensor and analyzed to determine an angular position of the magnet. The sensor can comprise a plurality of sensor elements, such as two sensor elements, arranged on a substrate or die in a sensor package. As it rotates, the magnet generates a magnetic field, such as an inhomogenous magnetic field having a component perpendicular to the rotation axis and acting on the angle sensor.

Abstract: A camera lens module according to an embodiment of the present invention is configured to include an autofocus carrier driven by an autofocus driving unit to advance and retreat along an optical axis and having an upper portion open in an optical axis direction; an optical image stabilizer stopper located at the open portion of the autofocus carrier; and an optical image stabilizing carrier configured to accommodate a lens barrier and located between the autofocus carrier and the optical image stabilizer stopper, the optical image stabilizing carrier being driven by an optical image stabilizer driving unit to perform optical image stabilization in a direction perpendicular to the optical axis, wherein a movement of the optical image stabilizing carrier in an optical axis direction is limited by the optical image stabilizer stopper located at the autofocus carrier.

Abstract: A displacement sensor includes: an first yoke that is formed of a soft magnetic body and is annular-shaped; an second yoke that is formed of a soft magnetic body and is annular-shaped, the second yoke having an inner circumferential surface which faces an outer circumferential surface of the first yoke via a gap and arranged coaxially with the first yoke; a magnet that is arranged to be capable of moving in an axial direction in a radial-direction central portion of the first yoke and is magnetized in the axial direction of the first yoke; and a detection element that detects a magnetic flux density which is generated in the gap and is arranged in the gap so that the magnetic flux density is detected along the radial direction of the first yoke.

Abstract: During shipment or other handling events, it is necessary to protect a liquid level controller from damage by manually engaging a lever locking mechanism to secure a lever assembly of the liquid level controller. The lever locking mechanism must be manually disengaged prior to calibrating or putting the liquid level controller into operation. To better facilitate an operator in monitoring the state of the lever locking mechanism, a sensor is coupled to the lever locking mechanism to detect whether the lever locking mechanism is in a locked or unlocked position. This information is then provided to the operator via a user interface. Compared to current visual inspections, the use of the sensor is more robust and reliable, and provides a simple non-contact method for determining the state of the lever locking mechanism.

Abstract: In a magnetic detection apparatus that prevents the output waveform from deviating regardless of whether two magneto-resistance elements are displaced relative to a magnet or accurately disposed relative to the magnet, the above two magneto-resistance elements are angled in consideration of a change in the direction of application of the magnetic field during displacement of the positional relationship and the anisotropy of the magneto-resistance elements so that the magneto-resistance elements are oriented in a direction in which the deviation of the output waveform caused by a change in the magnitude of application of the magnetic field during displacement of the positional relationship is cancelled, thereby preventing the detection accuracy of a magnetic moving body (detection target) being affected even if the magneto-resistance elements are displaced relative to the magnet due to manufacturing variations.

Abstract: A robotic sensing and touch apparatus detects gradual deformations in a resilient surface, in contrast to conventional rigid member displacement. Hall effect sensors coupled to rare-earth magnets in a deformable base allow sensing of surface curvature and compression against grasped objects. The deformable base, such as a silicone mold or other resilient encapsulation, fixes a magnetic source and an opposed Hall effect sensor. Calibration of a received magnetic field is defined by a sensor element voltage in an “at rest” (undeformed) state, and at successive degrees of deformation resulting from compression of the deformable base that draws the magnet in different orientations relative to the Hall effect sensor. An array of magnet and sensor element pairs allows relative sensing over an area for detecting curvature of a translated or articulated member, or engagement with a curved surface.

Abstract: A Hall sensor including multiple Hall elements which have a first terminal contact and a second terminal contact and a third terminal contact, the multiple Hall elements being electrically connected in series. The first terminal contacts and the third terminal contacts of the individual Hall elements are connected to each other, and the second terminal contacts of the Hall elements are supply voltage terminals or as Hall voltage taps. A beginning of a first branch being electrically connected in series to an end of a second branch, in such a way that the direction of the current flow through the Hall elements of the first branch is counter to the direction of the current flow through the Hall elements of the second branch.

Abstract: An electronic device may include a haptic actuator that includes an actuator housing, coils carried within the actuator housing, and a field member movable within the actuator housing responsive to the coils. The haptic actuator may also include spaced apart Hall Effect sensors carried within the actuator housing between the coils and for sensing a temperature of the field member. The electronic device may also include a controller coupled to the haptic actuator and configured to determine a temperature of the field member based upon the spaced apart Hall Effect sensors and drive the haptic actuator based upon the temperature.

Abstract: A Hall sensor includes a first Hall element pair configured to provide a first measurement signal, a second Hall element pair configured to provide a second measurement signal, and a third Hall element pair configured to provide a third measurement signal. Each element in the third Hall element pair is arranged between Hall elements of the first Hall element pair and Hall elements of the second Hall element pair. The Hall element pairs are configured to be actuated such that the first, second, and third measurement signals can be combined into one aggregate measurement signal which corrects an error in an angle of rotation determination caused by an external magnetic field.

Abstract: Traversable strain sensor readers for reading a plurality strain sensor reference features on a turbine component include a traversing system configured to traverse the traversable strain sensor reader along at least a portion of the turbine component, and a reader configured to read at least a portion of the plurality of strain sensor reference features while the traversing system traverses the traversable strain sensor reader along at least the portion of the turbine component.

Abstract: A device has a flexible substrate supporting an array of magnetic sensors exposed to a uniform external magnetic field. One or more controllers receive magnetic sensor signals from the magnetic sensors. The one or more controllers collect reference magnetic sensor signals when the flexible substrate is aligned with the uniform external magnetic field. The one or more controllers collect first polarity magnetic sensor signals in response to deformation of the flexible substrate in a first direction. The one or more controllers collect second polarity magnetic sensor signals in response to deformation of the flexible substrate in a second direction. The magnetic sensor signals establish a profile of the orientation of the flexible substrate with respect to the uniform external magnetic field.

Abstract: A rotary position sensor includes a member with a shaft associated with the member such that movement of the member rotates the shaft. An arc-shaped permanent magnet is coupled to a periphery of the shaft for rotation therewith. First and second adjacent magnetic field concentrators define a gap there-between. Sensor structure is disposed in the gap. Upon movement of the member causing rotation of the shaft and magnet, the concentrators and sensor structure remain stationary, with the magnet providing a magnetic pole that changes the magnetic field in the gap. The sensor structure is constructed and arranged to respond to the changes in the magnetic field to identify a position of the member.

Abstract: A position detector has a gap for providing a detection range. The gap has a gap width that is greater at the ends of the gap than at a center. Therefore, an amount of a spill magnetic flux and an amount of a direct magnetic flux respectively flowing through a position at and around an end portion of the gap are reduced when compared to a gap having a constant gap width along the direction of relative movement. Namely, the density of magnetic flux which passes through a Hall element that is positioned at each longitudinal end of the gap decreases. Therefore, at or around the ends of the gap, a rate of change of the magnetic flux density detected by the Hall element decreases and the linearity of an output signal from the Hall element is improved.

Abstract: A measurement system having a first magnetic field sensor and having a magnet for generating a magnetic field, in which the magnet has a first pole face and a second pole face, wherein an axis of rotation is defined perpendicular to the first pole face and perpendicular to the second pole face, wherein the magnet is supported for rotation about the axis of rotation, in which the first magnetic field sensor is positioned facing the first pole face and at a distance from the axis of rotation, in which the magnet has a rotational asymmetry of the flux density in the region of the first pole face, wherein the flux density of the magnet in the first magnetic field sensor can be adjusted between a maximum and a minimum by rotation of the magnet about the axis of rotation.

Abstract: An actuator device having a motor driven cam, a follower coupled to an output member and driven by the cam, and a controller for controlling operation of the motor. The cam has a first cam surface, a second cam surface and a lift portion between the first and second cam surfaces. The controller is configured to identify a predetermined point on the lift portion as the follower is moved relative to the cam along the lift portion toward the second cam surface. The controller identifies the predetermined point based on a rate of change in the position of the output member along an output member axis as a function of the rotational position of the cam about a cam axis. The controller controls operation of the motor based on the predetermined point to position the follower on the second cam surface.

Abstract: A rotation detector which can improve the manufacturing efficiency of a rotating machine. The rotation detector is provided with a connecting part which is fastened in contact with a rotating part of the power part, an output shaft which extends from the connecting part to one side in the axial direction, and a moving part which is comprised of a connecting part and output shaft and, further, has a detected region which is formed at a maximum outer circumferential surface of the connecting part and output shaft, and a fixed part which is fastened to the connecting part at the outside in the radial direction and which detects a change in magnetic field which is generated along with rotation of the detected region.

Abstract: A vertical Hall sensor includes a Hall effect region and a plurality of contacts formed in or on a surface of the Hall effect region. The plurality of contacts are arranged in a sequence along a path extending between a first end and a second end of the Hall effect region. The plurality of contacts includes at least four spinning current contacts and at least two supply-only contacts. The spinning current contacts are configured to alternatingly function as supply contacts and sense contacts according to a spinning current scheme. The at least four spinning current contacts are arranged along a central portion of the path. The at least two supply-only contacts are arranged on both sides of the central portion in a distributed manner and are configured to supply electrical energy to the Hall effect region according to an extension of the spinning current scheme.

Abstract: A lens driving device includes: a lens frame; a supporting unit that supports the lens frame in driving directions; a driving unit that drives the lens frame in one or both of a direction of an optical axis and a direction intersecting the optical axis; and a sensor that is mounted on the supporting unit and detects a position of the lens frame. The supporting unit includes: a circuit that is connectable to the sensor and integral with the supporting unit; and a recess that receives the sensor. The circuit has terminals exposed to a space inside the recess.

Abstract: A magnetic field sensor uses upper and lower thresholds. The upper and lower thresholds are limited such that they have a minimum separation distance between equivalent voltage levels of the upper and lower thresholds.

Abstract: A sensor device includes: at least one magnetic field generator having an end face line, the at least one magnetic field generator being configured to determine an angle of rotation by use of at least one sensor unit; and the at least one sensor unit configured to detect a magnetic flux density representative of the angle of rotation about an axis of rotation, which axis of rotation lies in a magnet plane of the at least one magnetic field generator and runs perpendicularly to the end face line. The magnetic field generator is formed as a dipole magnet with a north pole and a south pole. A pole separation plane separates the north pole and south pole.

Abstract: A torque detection apparatus includes a magnetic element that outputs a signal corresponding to a magnetic flux from a magnetic circuit including a magnetic yoke. The torque detection apparatus further includes a signal retrieval member electrically connected to the magnetic element, and a unit housing formed of resin and molded integrally with the magnetic element and the signal retrieval member so as to cover the magnetic element and the signal retrieval member. The unit housing includes a body portion provided with an internal space in which the magnetic yoke is housed, and a connector portion provided with an internal space in which an end of the signal retrieval member exposed from the resin is disposed. In the unit housing, a communication path is formed through which the internal space is in communication with the internal space.

Abstract: A steering system includes a rotation angle sensor that detects a signal related to an absolute steering angle, and an assist circuit that acquires the signal related to the absolute steering angle while an ignition switch is off in order to reduce battery consumption. The assist circuit includes a counter that updates a count value based on a result of detection by a first rotating direction determining unit and a second rotating direction determining unit that determine a rotating direction of a motor, and an abnormality detecting unit that detects an abnormality in absolute steering angle based on a past value and a current value of the count value in the counter.

Abstract: A magnetic field sensor for detecting motion of an object includes magnetic field sensing elements to generate at least two phase-separated magnetic field signals and a processor including a vector angle generator to generate vector angle values as a function of the magnetic field signals and a vector angle comparator to generate a comparator output signal indicative of a difference between a plurality of vector angle values. An output signal generator responsive to the comparator output signal is configured to generate a sensor output signal indicative of a one or more conditions of motion of the object including: an absence of normal rotation, a direction change, and a vibration. In some embodiments, the vector angle comparator may generate a comparator output signal indicative of a comparison of a vector angle value and one or more threshold values. In this case, the output signal generator may be configured to generate a sensor output signal indicative of a speed of motion and/or a position of the object.

Abstract: A magnetic field measuring device having a semiconductor body with a surface parallel to an x-y plane and having a magnet with a flat main extension surface parallel to the x-y plane, the direction of magnetization changes along the main extension surface due to at least two adjacent magnetic poles, the magnet being rotatable relative to the IC package about an axis of rotation extending in a z direction and the z direction being orthogonal to the x-y plane. An imaginary extension of the axis of rotation passes through the magnet. The semiconductor body has three magnetic field sensors spaced apart from one another on the surface, and each of the magnetic field sensors measures the same component of the magnetic field. All magnetic field sensors are located along the imaginary extension of the axis of rotation within the projection of the main extension surface.

Abstract: In one aspect, a magnetic field sensor includes first and second magnetic field sensing elements having respective first and second maximum response axes. The first and second maximum response axes point along respective first and second different coordinate axes. In response to a magnetic field, the first and second magnetic field sensing elements are operable to generate first and second magnetic field signals. The magnetic field sensor includes an electronic circuit coupled to receive the first and the second magnetic field signals. The electronic circuit is configured to determine a magnitude of a vector sum of the first and the second magnetic field signals and provide one or more signals in response to the magnitude of the vector sum determined.

Abstract: The implantable pet locating microchip is a device that monitors the location of an animal, monitors the internal temperature of an animal, and monitors the gait of an animal. The location of the animal is provided by a GPS device. The internal temperature of the animal is monitored by a thermal device. The gait of the animal is monitored through the use of an angle sensor or a force sensor. This measured information is then transmitted to a receiving device such as a tablet or smart phone where it can be monitored. The implantable pet locating microchip is also configured to receive inquiries that initiates the immediate transmittal of the measured information. The implantable pet locating microchip comprises a housing, a battery, a location module, a thermal device, a gait sensor, a logic module, a transceiver, and an optional magnet.

Abstract: A rotation angle sensor for detecting an absolute rotation angle upon single or multiple revolutions includes a magnetic field sensor and an encoder arrangement. The magnetic field sensor detects at least two orthogonal magnetic field variables. The encoder arrangement is rotatable depending on the absolute rotation angle relative to the magnetic field sensor, such that the magnetic field detected by the magnetic field sensor is dependent on a relative angular position of the encoder arrangement with respect to the magnetic field sensor. The encoder arrangement is furthermore displaceable relative to the magnetic field sensor. The relative angular position and the relative translational position of the encoder arrangement with respect to the magnetic field sensor is determined from the at least two orthogonal magnetic field variables. The absolute rotation angle is determined by means of the relative angular position and the relative translational position.

Abstract: A rotation angle sensor for detecting a rotation angle of a shaft of the motor or shaft of a machine which is driven by a motor, equipped with a detected part at an outer circumferential part of a rotary body attached to the shaft and a detection element facing the detected part provided on a pedestal which is surrounding the shaft, wherein a recessed part which is provided at the pedestal is formed with an abutting surface which abuts against an end face of the detection element at the side far from the shaft of the detection element, the distance of the abutting surface from the axial line is made different along the peripheral direction of the pedestal, and a position of the detection element abutting against the abutting surface is moved in the peripheral direction so as to adjust the difference between the rotary body and the detection element.

Abstract: A method and apparatus (100) are disclosed for wirelessly communicating by a proximity communication circuitry comprising an antenna with a proximate device (200) according to a proximity communication protocol. The proximity circuitry is disabled when not needed. Voltage in the antenna caused by an electromagnetic power signal (222) is detected when the proximity communication circuitry is disabled. The detection of voltage is independent of whether the electromagnetic signal (222) complies with the proximity communication protocol. An event is triggered in response to the detected voltage. Correspondingly a method and device (200) for externally controlling the apparatus (100) are disclosed in which a user command is detected and responsively to the user command, an electromagnetic signal (222) is transmitted to the apparatus (100) for triggering the event. The electromagnetic signal (222) has a regular wave form.