Magnetic system for counting rotations having increased stability against magnetic interference fields
US12326482B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Nov 2, 2021 |
| Grant date | Jun 10, 2025 |
| Priority date | — |
| Expiry date | Mar 21, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/1292
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic system for counting revolutions is provided having increased immunity to magnetic interference fields and which can be used in a magnetic field range (B-field range) that is considerably above that customarily used according to the prior art, with the width of the magnetic window ΔB, which is to say the difference between the lower and upper B-values permissible during use, being as large as possible, an angle sensor for determining the field direction of a magnetic field of a permanent magnet which jointly captures the angle sensor and a revolution counter with the revolution counter being formed by a GMR or TMR revolution counter having a known design being used, and the angle sensor and the revolution counter being disposed next to one another in a shared enclosure and/or on a shared printed circuit board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.