Patent ID: 8860403

Claim:
A gradient sensor of a component of a magnetic field comprising at least one elementary sensor comprising a deformable mass equipped with a permanent magnet 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, wherein the deformable mass is able to deform under the effect of a force exerted on the magnet by the gradient, the effect of said force being to shift it, by dragging the deformable mass, in a direction substantially colinear to the component of the magnetic field for which the sensor has to acquire the gradient, the deformable mass comprising at least two anchoring points to a fixed support device, the at least two anchoring points being located in two opposite zones of the deformable mass and the permanent magnet being located between two anchoring points, and the elementary sensor also comprising measuring means of at least one electric variable translating deformation or stress of the deformable mass engendered by the gradient.