Patent · US Active

Angle sensor

US11448713B1 · kind B1 · utility

2Cited by

3References

26Claims

0Family size

Assignee

Allegro MicroSystems, LLC · US

Inventors

Till-Jonas Ostermann · Hirschberg, DE
Simon E. Rock · Heidelberg, DE
Emil Pavlov · Heidelberg, DE

Key dates

Filing date	Jul 13, 2021
Grant date	Sep 20, 2022
Priority date	—
Expiry date	Jul 13, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG01R33/09
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Methods and apparatus for a magnetic field sensor having first and second arrays of magnetic field sensing elements with at least first and second orthogonal axes of sensitivity. The first array of magnetic field sensing elements is spaced a first distance from the second array of magnetic field sensing elements. A turns counter counts a number of times a magnetic pole pair of a moving target passes the magnetic field sensing elements with a selected pole pair resolution and a module determines absolute angular position of the target from differential signals from the first and second arrays of magnetic field sensing elements and the turns counter. The first distance is configured to match a pitch of the poles of the target.

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