Patent ID: 11965909
Assignee: INFINEON TECHNOLOGIES AG
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A magnetic sensor system, comprising:
a toothed wheel configured to rotate about a rotation axis that extends in an axial direction, wherein the toothed wheel comprises a plurality of teeth and a plurality of notches arranged in an alternating tooth-notch pattern and which define a circumferential perimeter, and wherein the toothed wheel further comprises an interior cavity arranged within the circumferential perimeter;
a front-bias magnet arranged within the interior cavity of the toothed wheel, wherein the front-bias magnet is rotationally fixed and is magnetized with a magnetization direction that extends along a radial axis of the toothed wheel, the radial axis being orthogonal to the rotation axis; and
a magnetic sensor arranged exterior to the toothed wheel, wherein the magnetic sensor comprises a first sensor element arranged on the radial axis that coincides with the magnetization direction of the front-bias magnet and the first sensor element is sensitive to a magnetic field of the front-bias magnet that is aligned with the radial axis, and wherein a rotation of the toothed wheel causes the magnetic field to oscillate between a first extremum value and a second extremum value at a location of the first sensor element.