US 11,754,646 B2
Magnetic sensor system
Jochen Schmitt, Biedenkopf (DE); Enno Lage, Kiel (DE); and Michael Joseph Browne, Thurles (IE)
Assigned to Analog Devices International Unlimited Company, Limerick (IE)
Filed by Analog Devices International Unlimited Company, Limerick (IE)
Filed on Mar. 7, 2022, as Appl. No. 17/688,439.
Claims priority of provisional application 63/165,578, filed on Mar. 24, 2021.
Prior Publication US 2022/0308132 A1, Sep. 29, 2022
Int. Cl. G01R 33/09 (2006.01); G01R 33/07 (2006.01)
CPC G01R 33/091 (2013.01) [G01R 33/072 (2013.01); G01R 33/093 (2013.01); G01R 33/096 (2013.01); G01R 33/098 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A magnetic sensor system, comprising:
a magnetic sensing device mounted on a first surface of a substrate, the magnetic sensing device at least comprising a magnetic multi-turn sensor and a magnetic angle sensor; and
a shielding arrangement configured to shield the magnetic sensing device from stray magnetic fields, the shielding arrangement comprising:
a ferromagnetic sleeve extending from an end of a rotating shaft, the ferromagnetic sleeve defining a receptacle sized to receive and seat against the rotating shaft, the ferromagnetic sleeve being arranged to house one or more magnets therein, wherein the substrate is positioned a first distance from a first end of the ferromagnetic sleeve, such that the magnetic sensing device is aligned with a rotational axis of the ferromagnetic sleeve; and
a shielding element arranged in proximity to the magnetic sensing device.