Device for compensating external magnetic stray fields or for compensating the influence of a magnetic field gradient on a magnetic field sensor
US9958295B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 14, 2016 |
| Grant date | May 1, 2018 |
| Priority date | — |
| Expiry date | Sep 14, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/0017
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device compensates for the an influence of a magnetic field gradient which may be generated due to a component geometry of a component (1). The device includes at least two magnetic field sensors (17, 18) which are arranged outside of the magnetic balance of the ferromagnetic component (1). The at least two magnetic field sensors (17, 18) each have a differing sensitivity. One of the magnetic field sensors (17, 18) is exposed to the influence of the magnetic field gradient to a greater extent compared to the other magnetic field sensor due to its spatial arrangement relative to the ferromagnetic component (1). The one magnetic field sensor may have a sensitivity lower than the other magnetic field sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.