Patent · US Active

System and method for angle sensing using magnet having asymmetric magnetization configuration

US10914609B2 · kind B2 · utility

0Cited by

1References

12Claims

0Family size

Assignee

NXP B.V. · NL

Inventors

Stephan Marauska · Kaltenkirchen, DE
Edwin Schapendonk · Oss, NL
Dennis Helmboldt · Halstenbek, DE
Jaap Ruigrok · Eindhoven, NL
Ralf van Otten · Eindhoven, NL
Jan Przytarski · Hamburg, DE
Jörg Kock · Burgwedel, DE

Key dates

Filing date	Jun 19, 2018
Grant date	Feb 9, 2021
Priority date	—
Expiry date	Mar 15, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG01B7/30
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A system includes a magnet configured to produce a magnetic field, the magnet having an asymmetric magnetization configuration that produces a distinct feature in the magnetic field. The asymmetric magnetization configuration can be produced via an asymmetric physical characteristic, nonuniform magnetization strengths, nonuniform magnetization distributions, off-centered magnet, and so forth. Magnetic field sensors are configured to produce output signals in response to the magnetic field, the output signals being indicative of the distinct feature in the magnetic field. A processing circuit receives the output signals and determines a rotation angle for the magnet using the output signals, the rotation angle having a range of 0-360°.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.