Patent · US Active

Assembly and method for determining the strength of a magnetic stray field

US11280851B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

TE Connectivity Sensors Germany GmbH · DE

Inventors

Axel Bartos · Waltrop, DE
Armin Meisenberg · Dortmund, DE

Key dates

Filing date	Jun 5, 2020
Grant date	Mar 22, 2022
Priority date	—
Expiry date	Jun 30, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG01R33/038
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An assembly includes a permanent magnet generating a magnetic field. The permanent magnet is arranged on the rotary member and generates a magnetic field perpendicular to an axis of rotation. A first channel has a first magnetic sensing element centered on the axis of rotation, the first channel providing a first angular data. A second channel has a second magnetic sensing element centered on the axis of rotation, the second channel providing a second angular data. The second magnetic sensing element is spaced from the first magnetic sensing element. Each of the first magnetic sensing element and the second magnetic sensing element have three voltage dividers. A processor computes a magnetic stray field component orthogonal to the magnetic field by comparing a first field strength based on the first angular data with the second field strength based on the second angular data.

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