Elektronische Schaltung zur Messung eines Winkels und einer Intensität eines Externen Magnetfelds

Details

Veröffentlichungs-Nr.

EP3712632

Aktenzeichen

EP19315017

Anmeldetag

21. März 2019

Veröffentlichung

9. Oktober 2024

Erteilung

9. Oktober 2024

Rechtsraum

EP

IPC

G01R33/00G01R33/06// G01D5/14

Abstract

An electronic circuit for measuring an angle and an intensity of an external magnetic field (60), comprising: a first and second magnetic field sensing unit (300, 400) having sensing axis substantially orthogonal to each other; a voltage generator (200) configured to supply a synchronization signal (101), a first voltage waveform (201) to the first magnetic field sensing unit (300) and a second voltage waveform (202) to the second magnetic field sensing unit (400); a signal conditioning unit (500, 600) configured to add up the first (301) to the second sensing output signal (401) and to output a conditioned signal (601); wherein the first and second voltage waveforms (201, 202) have substantially the same amplitude and the same frequency and are phase shifted by about 90° with respect to each other; and a magnetic field angle detection unit (700) configured to receive the conditioned signal (601) and the synchronization signal (101) and to measure a phase shift between the conditioned signal (601) and the synchronization signal (101) and determine the angle of the external magnetic field from the measured phase shift.

Anmelder

Firmen

Allegro MicroSystems, LLC
Crocus Technology SA
Crocus Technology S.A.

Land

🇺🇸 USA

Fachgebiete