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METHOD FOR ESTIMATING THE MOVEMENT OF AN OBJECT MOVING IN A MAGNETIC FIELD

  • US 20200132464A1
  • Filed: 07/13/2018
  • Published: 04/30/2020
  • Est. Priority Date: 07/13/2017
  • Status: Active Grant
First Claim
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1. Method for estimating the movement of an object (1) moving in an ambient magnetic field, the method being characterised in that it comprises the steps of:

  • (a) Acquiring by magnetic measurement means (20) integral with said object (1) at least one component;

    of the magnetic field and/orof at least one i-th derivative of the magnetic field, with n+1≥

    i≥

    1 and n≥

    1,at the level of the magnetic measurement means (20);

    (b) Estimating by the data processing means (21, 31, 41) at least one component of the movement of said object (1) using at least one component of the equation ∇

    {dot over (n)}B=fn





    nB+gn(∇

    n+1B)·

    V, where ∇

    nB is an n-th derivative of the magnetic field, Ω

    the instantaneous angular velocity, V the instantaneous linear velocity, and fn and gn predetermined functions.

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