Patent ID: 11885648
Assignee: INFINEON TECHNOLOGIES AG
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 19:
20. A sensor device, comprising:
a magnetic field sensor configured to measure a 3D magnetic field vector of a magnetic field generated by a magnet,
wherein the 3D magnetic field vector describes at least a part of an ellipse in 3D space during a rotational movement of the magnet; and

at least one processor configured to:
map the measured 3D magnetic field vector to a 2D vector based on a compensation mapping, wherein the compensation mapping is configured to map the ellipse in 3D space to a circle in 2D space,
wherein the compensation mapping is based on a linear mapping represented by a compensation matrix; and

determine a rotation angle of the magnet based on the 2D vector.