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1. (WO2017153690) METHOD FOR DETECTING AN ANOMALY IN THE CONTEXT OF USING A MAGNETIC POSITIONING DEVICE

Pub. No.:    WO/2017/153690    International Application No.:    PCT/FR2017/050537
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Fri Mar 10 00:59:59 CET 2017
IPC: G01V 3/08
Applicants: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
MINMAXMEDICAL
Inventors: ALOUI, Saifeddine
BERTRAND, François
CHAVE, Mickaël
LAVALLÉE, Stéphane
Title: METHOD FOR DETECTING AN ANOMALY IN THE CONTEXT OF USING A MAGNETIC POSITIONING DEVICE
Abstract:
The invention relates to a method for detecting an anomaly, associated with a magnetic positioning device including a first magnetic element (1) and a second magnetic element (2) associated with a first object (3) and a second object (4), respectively, characterised in that the first object (3) comprises a first motion sensor (5) capable of determining a first data item (g1) which is dependent on the tilt of the first object (3) in a basic frame of reference, in particular the earth's frame of reference, and in that the method comprises: a step of determining (E1) the first data item (g1) from said first motion sensor (5); a step of determining (E2) a second data item (g2) which is dependent on the tilt of the second object (4) in said basic frame of reference; a step of determining (E3) at least one orientation parameter by the magnetic positioning device using the first and second magnetic elements (1, 2); and a step of using (E4) said at least one orientation parameter and first and second data (g1, g2) to produce an indicator of the presence of the anomaly.