Angle detection of a rotating system using a single magnet and multiple hall sensors
US10557724B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2018 |
| Grant date | Feb 11, 2020 |
| Priority date | — |
| Expiry date | Sep 28, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/0023
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An angular detection system including a magnet and sensors is disclosed. The magnet can be located on a rotating component and the sensors can be located on a stationary component, or vice versa. The magnet can generate a plurality of magnetic flux lines. The plurality of sensors can be located and spatially separated along the motion path of the magnet for detecting the magnetic flux densities. The strength of the magnetic flux lines sensed by a given sensor can be used to determine the location of the magnet along its motion path. The plurality of sensors can generate one or more signals indicative of the strength of the sensed magnetic field lines. Based on the strength of the magnetic flux lines, the location of the magnet, or both, the system can determine the angle of rotation of the device by using a polynomial function or a look-up table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.