Apparatus for determining external stray magnetic fields on a magnetic field sensor
US10151652B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 2016 |
| Grant date | Dec 11, 2018 |
| Priority date | — |
| Expiry date | Jul 28, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2451
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus is provided for detecting an external magnetic field and/or a product-related magnetic field on a ferromagnetic component, which has a magnetization in the form of magnetic tracks. The apparatus comprises at least two magnetic field sensors which can detect an external magnetic field acting on the ferromagnetic component. Each magnetic field sensor comprises two coils, wherein each coil is assigned at least one magnetic track. Each two coils are configured so that they have a different sensitivity to one another, wherein one coil which has a higher sensitivity with respect to the other coil. The coil having the higher sensitivity ensures that the effect of an external magnetic field is amplified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.