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1. (WO2018219891) METHOD FOR TRACKING A MAGNET WITH A NETWORK OF MAGNETOMETERS, COMPRISING A PHASE OF IDENTIFYING THE PRESENCE OF THE MAGNET AND OF A MAGNETIC DISTURBANCE

Pub. No.:    WO/2018/219891    International Application No.:    PCT/EP2018/063983
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Wed May 30 01:59:59 CEST 2018
IPC: G06F 17/10
G06F 3/046
Applicants: ISKN
Inventors: DUPRE LA TOUR, Jean-Marie
HAUTSON, Tristan
Title: METHOD FOR TRACKING A MAGNET WITH A NETWORK OF MAGNETOMETERS, COMPRISING A PHASE OF IDENTIFYING THE PRESENCE OF THE MAGNET AND OF A MAGNETIC DISTURBANCE
Abstract:
The invention relates to a method for estimating the position of a magnet (2) using a tracking device comprising an array of magnetometers (Mi), comprising phases of determining an initial state vector associated with the magnet, of measuring a useful magnetic field emitted by a magnetic element, of estimating a magnetic field generated by the magnet, of calculating a bias between the estimated magnetic field and the measured magnetic field, and of updating the state vector on the basis of the bias. The method also comprises an identifying phase comprising a step of identifying the absence of the magnet with respect to the array of magnetometers and, where appropriate, a step of identifying the magnetic element as being a magnetic disturbance.