Position sensing for moveable mechanical systems and associated methods and apparatus
US7259551B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2006 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Sep 7, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D2205/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Position sensing of movable elements including but not limited to machine components is disclosed. Motion of a movable element can produce motion of a magnetic field, which can be detected by magnetic sensors. The motion and/or variations of a magnetic field and/or a magnetic flux may be produced by any combination of a motion of the sensors, associated magnets, or associated magnetic material. Magnetic sensors maybe capable of measuring either rotary, or linear motion, or both. Such sensors can provide indication of an incremental position change, an absolute position, or both. Absolute position and high-resolution position sensing may be produced for measurement of either linear and/or angular motion. Suitable magnetic sensors include, but are not limited to, Hall effect devices and/or magneto-resistive elements, and may include multi-element magnetic sensors. Suitable signal conditioning and/or control means such as control electronics can be used to receive output signals from the sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.