Infineon Technologies Ag

Joo Il Park

Hyun Jeong Kim

Dirk Hammerschmidt

Gernot Binder

Armin Satz

Sehwan Kim

Christoph Oswald

Thomas Lange

Stephan Leisenheimer

Richard Heinz

Karine Pillet

Myungkil Kim

Klaus Grambichler

Severin Neuner

Se Hwan Kim

An absolute position measurement system includes a multipole magnet comprising alternating magnetic poles extending along a multipole extension direction, the alternating magnetic poles generating a magnetic field. A magnetic sensor includes a first sensor element arrangement configured to generate a first signal in response to a first magnetic field component and a second sensor element arrangement configured to generate a second signal in response to a second magnetic field component. The absolute position measurement system is configured, as a position of the magnetic sensor relative to the multipole magnet changes, to generate a first oscillating sensor signal with decreasing first signal amplitude and to generate a second oscillating sensor signal with decreasing second signal amplitude based on the first and second signals. A processing circuit is configured to calculate an absolute position of the magnetic sensor based on the first oscillating sensor signal and the second oscillating sensor signal.

Absolute position measurement using single magnet strip

The herein disclosed innovative concept concerns a magnetic angle sensor and a method for operating the same. The sensor includes a magnetoresistive arrangement and a magnetic source being configured to be movable relative to the magnetoresistive arrangement. The magnetoresistive arrangement includes a first magnetoresistive element configured to generate a first output signal, a second magnetoresistive element configured to generate a second output signal, and a third magnetoresistive element configured to generate a third output signal. The first, second and third magnetoresistive elements are oriented relative to each other such that they form a symmetrical geometric arrangement with equal angular distances between each other.

Magnetic angle sensor with symmetrical geometric arrangement

A position sensor system comprises a magnetic strip extending in a readout direction and comprising magnetic poles alternating at a constant pitch along the readout direction. At least a first differential magnetoresistive sensor comprises magnetoresistive sensing elements spaced at the pitch. The magnetic poles of the magnetic strip and the first differential magnetoresistive sensor are movable with respect to each other in the readout direction.

Position sensor system, optical lens system and display

The present disclosure relates to an apparatus for position detection, including a multipole magnet with pole pairs extending along a multipole extension direction, a magnetoresistive sensor including a first sensor bridge sensitive for a first in-plane magnetic field component and a second sensor bridge sensitive for a second in-plane magnetic field component, wherein the first sensor bridge and the second sensor bridge are arranged in-plane and are spaced apart along a sensor axis, wherein the multipole extension direction and the sensor axis are rotated by a rotation angle larger than 20° and less than 70° to each other.

Apparatuses and methods for position detection

An absolute position measurement system includes a multipole magnet including alternating magnetic poles extending along a multipole extension direction, the multipole magnet has a linear changing configuration relative to a linear path and produces a magnetic field having a field strength that undergoes a sinusoidal change along the linear path due to the alternating magnetic poles and a linear change along the linear path according to the linear changing configuration relative to the linear path; and a magnetic sensor configured to move along the linear path. The magnetic sensor includes a first sensor element arrangement configured to generate a first sensor signal, a second sensor element arrangement configured to generate a second sensor signal that is phase shifted with respect to the first sensor signal, and a processing circuit configured to calculate an absolute position of the magnetic sensor based on the first sensor signal and the second sensor signal.

Implementations relate to a sensor assembly for determining rotation about an axis and linear movement parallel to the axis. The sensor assembly comprises a magnetic structure comprising a north pole radially displaced from the axis and a south pole radially displaced from the axis and opposite to the north pole. The north pole and the south pole of the magnet extend radially into the direction of the axis at an axial end of the sensor assembly. The sensor assembly further comprises at least one sensor element sensitive to magnetic fields radially between the north pole and the south pole.

Sensor assembly for determining rotation about an axis and linear movement parallel to the axis

In some implementations, a sensing device associated with less than a 360 degree measurement range may obtain a set of signal values. The sensing device may be configured to sense a magnetic field present at the sensing device and collect sensor data based on the magnetic field. The set of signal values may be included in the sensor data collected by the sensing device and may correspond to one or more components of the magnetic field present at the sensing device. The sensing device may determine, based on the set of signal values, a set of calibration points and a set of angular positions. The sensing device may calculate a set of calibration parameters based on the set of calibration points and the set of angular positions. The sensing device may utilize the set of calibration parameters to perform one or more safety checks.

Angle sensor calibration method for safety measure without full rotation

A magneto-resistive angle sensor system for measuring a rotational angle of a rotating component in an out-of-shaft configuration. The magneto-resistive angle sensor system including a magnet, which is attached to the rotating component. The magneto-resistive angle sensor system further including a magneto resistive sensor. A sensitive plane of the magneto-resistive sensor is positioned with an offset to the center of the magnet in an offset direction.

Magneto-resistive angle sensor system and a vehicle comprising a magneto-resistive angle sensor system

A method of determining a position of a first object includes receiving a first component and a second component of a vector field jointly generated by the first object and by a second object. The method further includes using the second component of the vector field to provide a compensation quantity indicating a contribution of the second object to the first component of the vector field. Further, the method includes determining the position of the first object using the first component of the vector field and the compensation quantity.

Method of determining a position of a first object in a positioning system, a positioning system and a computer program

Embodiments can provide a system, a wheel localizer, a wheel localization device, a method or a computer program for locating a position of wheel and/or for determining an acceleration of a wheel of a vehicle. The system for locating a position of at least one out of a plurality of wheels of a vehicle includes a detector configured to obtain information related to a tangential acceleration of the at least one wheel of the vehicle and a unit configured to obtain information related to angular rotations of the plurality of wheels. The system further includes a locator configured to determine the position of the at least one wheel based on the information related to the tangential acceleration of the at least one wheel and the information related to the angular rotations of the plurality of wheels.

Wheel localizer, wheel localization device, system, method and computer program for locating a position of a wheel

Embodiments can provide a system, a wheel localizer, a wheel localization device, a method or a computer program for locating a position of wheel and/or for determining an acceleration of a wheel of a vehicle. The system for locating a position of at least one out of a plurality of wheels of a vehicle includes a detector configured to obtain information related to a tangential acceleration of the at least one wheel of the vehicle and an antilock braking system unit configured to obtain information related to angular rotations of the plurality of wheels. The system further includes a locator configured to determine the position of the at least one wheel based on the information related to the tangential acceleration of the at least one wheel and the information related to the angular rotations of the plurality of wheels.

Growing community of inventors

Sungnam, South Korea

Joo Il Park