The present disclosure relates to a sensor assembly for simultaneously capturing an angular position and a torque of a rotatable shaft. The sensor assembly comprises, for determining the angular position, a main body, two additional bodies, which are arranged coupled for rotation on the main body, and two angle resolvers, which are arranged on a circuit board in the immediate vicinity of the additional bodies. In this arrangement, the angles of the additional bodies are determined by the angle resolvers and passed as an angle signal to an evaluation unit arranged on the circuit board. The sensor assembly further comprises a direct coating, which captures a torque signal from the rotating shaft and passes this signal over a connection line to the evaluation unit. The connection line has a section wound multiple times around the shaft to permit a rotation of the shaft by at least +/−900°.

A sensing system and a method for sensing position include a first magnetic track comprising a first number of multipoles for generating a magnetic field solidarily fixed to a second magnetic track for generating a magnetic field and a second sensor for sensing magnetic field, forming a magnetic structure. At least two sensors are included. The first sensor is positioned proximal to the first magnetic track, closer to the first magnetic track than to the second magnetic track. The second sensor is positioned proximal to the second magnetic track. The distance between the first sensor and the second magnetic track is larger than the distance between the second sensor and the second magnetic track. The magnetic flux density generated by the first and second magnetic tracks follow a ratio of two or more.

The invention relates to a sensor arrangement (7) for detecting a position and/or a displacement of a flux element assembly (8) along a longitudinal direction, with a coil assembly (1) and the flux element assembly (8), wherein the coil assembly (1) comprises at least two flat coils (2a, b), wherein the flux element assembly (8) comprises at least two flux elements (9a, b), wherein the at least two flux elements (9a, b) are arranged adjacent to one another in the longitudinal direction and offset in transverse direction, wherein the flux element assembly (8) and the coil assembly (1) are movable and/or displaceable relative to one another in the longitudinal direction, wherein the flat coils (2a, b) are designed, such that an actual inductance (L.sub.1, L.sub.2) of each flat coil (2a, b) is dependent on the actual displacement of the flux element assembly (8) relative to the coil assembly (1), with an evaluation device, which is set up to determine the actual inductance (L.sub.1, L.sub.2) for each flat coil (2a, b) and determine the actual displacement based on the determined actual inductances (L.sub.1, L.sub.2).

A method of correcting a position reading from a position sensing arrangement. The position sensing arrangement is suitable for sensing the position of a revolute joint of an articulated structure, and comprises a disc having a magnetic ring with magnetic pole pairs and a magnetic sensor assembly comprising a magnetic sensor array for detecting the magnetic pole pairs of the magnetic ring. The method comprises: for each pole pair of the magnetic ring, taking a calibration pole pair position reading with the magnetic sensor array, and generating a pole pair correcting function by comparing the calibration pole pair position reading with a model pole pair position reading; averaging the pole pair correcting functions of the pole pairs of the magnetic ring to generate an average pole pair correcting function for the magnetic ring; taking a position reading with the magnetic sensor array, the position reading comprising a plurality of pole pair position readings; and generating a corrected position reading by deducting the average pole pair correcting function from each pole pair position reading.

A magnetic sensor assembly for detecting angular positions of a camera module, includes: a housing; a rotation member configured to rotate together with the camera module; a magnet member that is configured to rotate with the rotation member on at least a portion of the housing, the magnet member includes a first multi-pole magnetized magnet that has a first number of pole pairs alternately disposed along a first circumference on the rotation member, and further includes a second multi-pole magnetized magnet that has a second number of pole pairs alternately disposed along a second circumference on the rotation member; a hall sensor configured to detect a change of magnetic field generated from the first multi-pole magnetized magnet and the second multi-pole magnetized magnet; and a processor configured to estimate an initial position of the rotation member and a rotational angle from the initial position using the detected magnetic field.

A scale for inductive position measurement along a measurement direction X includes a support channel made of electrically conductive material having two interconnected spaced-apart side walls extending parallel to the measurement direction X and enclosing an interstitial space therebetween. A succession of first graduations made of electrically conductive material are disposed on the support channel, located in the interstitial space opposite and spaced from one of the two side walls and extending parallel to the measurement direction X. A succession of second graduations made of electrically conductive material are disposed on the support channel, located in the interstitial space opposite and spaced from the other one of the two side walls and extending parallel to the measurement direction X. The succession of first graduations and the succession of second graduations form a gap configured to receive a scanner operable to inductively scan the first graduations and the second graduations.

The present invention provides an apparatus for sensing rotor location, the apparatus comprising: a central shaft; a magnet coupled to the central shaft; a sensor portion is disposed correspond to the magnet; wherein the sensor portion comprising a substrate, a first group including a first Hall sensor and a third Hall sensor disposed on the substrate, and a second group including a second Hall sensor and a fourth Hall sensor, the first Hall sensor and the third Hall sensor are arranged to overlap in a radial direction about the central shaft and the second Hall sensor and the fourth Hall sensor are arranged to overlap in a radial direction about the central shaft.

This application relates to an absolute position detection device and detection method of a rotating body. In one aspect, the device includes first row magnets coupled to a rotating body to rotate together and having n pole pairs, and second row magnets coupled to the rotating body to rotate together and having (n+1) pole pairs. The device also includes a first Hall sensor installed adjacent to the first row magnets and configured to detect a change in magnetism according to rotation of the first row magnets. The device further includes a second Hall sensor installed adjacent to the second row magnets and configured to detect a change in magnetism according to rotation of the second row magnets. The device further includes a controller configured to measure an absolute position of the rotating body using signals output from the first and second Hall sensors.

A scanning element for an inductive angle-measuring device includes a printed circuit board which has exciter lines and receiver lines, and an electronic circuit. The printed circuit board is arranged in a housing, the housing having a guideway into which the printed circuit board is inserted. The guideway is formed such that the printed circuit board is positioned with form locking in a direction parallel to an axis, and by being inserted into the guideway, the printed circuit board is deformed along a circle line which is curved about the axis.

A rotary encoder for measuring absolute rotation around an axis of the rotary encoder, comprising: a magnetised element comprising first and second surfaces at an angle to one another; a first magnetic track provided on the first surface and a second magnetic track provided on the second surface, wherein the first and second magnetic tracks subtend an angle θ around the axis of the rotary encoder, wherein each magnetic track comprises a number of magnetic pole pairs, a magnetic pole pair being formed of two poles defining regions of opposite magnetic polarization, wherein the number of magnetic pole pairs in each track are different and have a greatest common factor of one; and first and second magnetic sensor arrangements, the first magnetic sensor arrangement arranged to detect a magnetic field of the first magnetic track and the second magnetic sensor arrangement arranged to detect a magnetic field of the second magnetic track, wherein the magnetic sensor arrangements are rotatably coupled to the magnetised element around the axis of the rotary encoder.