Sensor for detecting the direction of a magnetic field in a plane
US7235968B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2003 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Aug 22, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/077
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a sensor for detecting the direction of a magnetic field in a plane whose direction can be defined by the indication of a polar angle ?. Said sensor comprises a number of n magnetic field sensors (3.0 to 3.7). A measurement axis (8.1 to 8.4) is assigned to each magnetic field sensor in such a manner that the absolute value of the output signal of the magnetic field sensor is largest when the magnetic field runs parallel to the measuring axis. All measuring axes intersect at a common point (5). The number k of measuring axes is equal to at least three. An operating mode is provided during which two magnetic field sensors are selected for calculating the angle ?. These two magnetic field sensors belong to different measuring axes, and the values of the output signals thereof are less than those of the output signals of the magnetic field sensors belonging to the other measuring axes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.