Kalibrierung der Empfindlichkeitsanpassung eines Magnetsensors

Details

Veröffentlichungs-Nr.

EP3467528

Aktenzeichen

EP17195165

Anmeldetag

6. Oktober 2017

Veröffentlichung

20. Mai 2020

Erteilung

20. Mai 2020

Rechtsraum

EP

IPC

G01R33/00G01R33/07

Abstract

A magnetic sensor device (99) comprises a substrate (10). A first magnetic sensor (A), a second magnetic sensor (B), and one or more inductors (20) are disposed over the substrate (10) and are controlled by a magnetic sensor controller (40) having a control circuit (42). The control circuit (42) is adapted for controlling the first magnetic sensor (A) to measure a first magnetic field (Al) and for controlling the second magnetic sensor (B- to measure a second magnetic field (B1) under presence of a fifth magnetic field generated by the inductors (20). The control circuit (42) is adapted for controlling the first magnetic sensor (A) to measure a third magnetic field (A2) and for controlling the second magnetic sensor (B) to measure a fourth magnetic field (B2) under presence of a sixth magnetic field generated by the inductors (20), the fifth magnetic field and the sixth magnetic field being different. The control circuit calculates a relative sensitivity matching value (S) that converts magnetic field values measured by the second magnetic sensor (B) to a comparable magnetic field value measured by the first magnetic sensor (A) or vice versa.

Anmelder

Firma

Melexis Technologies NV

Land

🇧🇪 Belgien

Fachgebiete