Arrangement for detecting the movement of a body and a method for the operation of such an arrangement
US8222889B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 2008 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Jan 29, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/145
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An arrangement for detecting a movement of a body, in which the body (20′) is mounted in such a way that it can move in at least one direction and in which a magnet (200) is incorporated. Its poles are aligned substantially parallel to a primary plane. A detector system is furthermore provided that comprises at least four magnetic field sensors (10a to 10d) for the detection of a change in the magnetic field when the body (20′) moves. In addition, a further magnetic field sensor (11) is provided for generating a correction signal that depends on the magnetic field. An evaluation unit (20) is used to provide movement information relating to the body (20′) derived from signals from the four magnetic field sensors (10a to 10d) and the minimum of one further magnetic field sensor (11).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.