Magnetic position sensor having a variable width magnet mounted into a rotating disk and a hall effect sensor
US6124709A · kind A · utility
74Cited by
14References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 5, 1998 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | Jun 5, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D2205/774
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A linear analog rotary 360 degree magnetic position sensor assembly for sensing the position of rotating objects. A magnet having a varying width is mounted to a magnet disc. A flux return disc is mounted on a shaft opposed to the magnet disc. The magnet generates a magnetic field in an air gap between the discs. A magnetic field sensor such as a hall effect sensor is positioned in the gap and operates to provide an output signal representative of the magnetic field density as the shaft and disc rotate. The output signal changes magnitude in relation to the relative position of the magnet with respect to the magnetic field sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.