Analog sensor for contact-free angular offset sensing

Abstract

Contactless angular offset analog sensor, of the magnetic inductance type, comprising: a first portion forming a detector (1), comprising at least one substrate plate (3) carrying at least one flat spiral winding (4), at least one core layer (8) of material with high magnetic permeability and low saturation field over at least one portion of said winding, the detector being adapted to coact with a device for processing the electrical signal measured at the terminals of the winding, two rotors (15, 15′) each comprising at least one magnet (18, 18′), disposed over a predetermined angular sector, the rotors being movable about a same axis (17) identical to the axis of the winding, each magnet generating in the plane of the core layer (8) a magnetic field of a value greater than the saturation field of said core layer over at least a portion of the surface of the winding.

Dependencies are inferred from the claim text.