Rotation angle using orthogonal magnetic sensing elements in close proximity to each other
US7560919B2 · kind B2 · utility
4Cited by
6References
20Claims
0Family size
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Key dates
| Filing date | Sep 29, 2006 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Sep 29, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D2205/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rotation angle detecting device that detects a rotation angle of a rotating object includes a permanent magnet that generates magnetic fields in response to rotation of the rotating object, a magnetic sensor, a first yoke and a second yoke. The magnetic sensor includes a pair of close integrated magnetic sensing elements, such as hall elements, disposed at a position around the permanent magnet so that one of the sensing elements senses magnetic field at a phase different from the other. The first yoke and the second yoke forms two magnetic paths crossing each other at the magnetic sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.