Magnetic field sensor for sensing a movement of a ferromagnetic target object
US9719806B2 · kind B2 · utility
27Cited by
237References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2014 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | Jul 11, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/09
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic field sensor operates as a motion detector for sensing a movement of a ferromagnetic target object having features. The magnetic field sensor has a plurality of magnetoresistance elements to generate, in a first channel, a feature signal indicative of a proximity of a feature of a ferromagnetic target object and, in a second channel, an edge signal indicative of a proximity of an edge of a feature of a ferromagnetic target object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.