Gradient sensor of a component of a magnetic field with permanent magnet
US8860403B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 23, 2010 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Sep 15, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/0286
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gradient sensor of a component of a magnetic field comprising at least one elementary sensor comprising a deformable mass (31) equipped with a permanent magnet (32) having a magnetization direction substantially colinear to the direction of the gradient of the component of the magnetic field to be acquired by the sensor. The deformable mass (31) is able to deform under the effect of a force exerted on the magnet by the gradient, the effect of this force being to shift it, by dragging the deformable mass (31), in a direction substantially colinear to the component of the magnetic field for which the sensor has to acquire the gradient. The deformable mass (31) is anchored to a fixed support device (33) in at least two anchoring points (36) substantially opposite relative to the mass (31). The elementary sensor also comprises measuring means (35, 35.1, 35.2, 35.3) of at least one electric variable translating deformation or stress of the deformable mass (31) engendered by the gradient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.