Magnetic sensor system for measuring linear position
US10989566B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2018 |
| Grant date | Apr 27, 2021 |
| Priority date | — |
| Expiry date | Apr 17, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D18/001
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic sensor system may include a first magnetic sensor and a second magnetic sensor. The first magnetic sensor may include a first triplet of sensor elements for measuring a magnetic field. The first triplet of sensor elements may be aligned linearly along a direction of movement. A first pair of differential signals, output by the first magnetic sensor, may indicate a position of the magnetic sensor system, along the direction of movement, relative to a magnetic pole pair. The second magnetic sensor may include a second triplet of sensor elements for measuring the magnetic field. The second triplet of sensor elements may be aligned linearly along the direction of movement. The second magnetic sensor may be positioned relative to the first magnetic sensor such that a second pair of differential signals, output by the second magnetic sensor, indicates a position of the magnetic sensor system across multiple pole pairs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.