Centre National De La Recherche Scientifique

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Institut Polytechnique De Grenoble

Dcns

Laure-Line Rouve

Matthieu Le Prado

Orphée Cugat

Jean-Louis Coulomb

Jérôme Delamare

Mathieu Baicry

Christine Lefrou

Yannick Vuillermet

Olivier Nicolas Chadebec

Olivier Pinaud

Laurent Demilier

Benjamin Wilsch

Gilles Cauffet

Antoine Viana

A method for measuring the intensity of a current, comprising the steps of obtaining a computation matrix M comprising a set of terms, proportional to a distance between a measuring point and a reference point, raised to a power higher than or equal to zero, forming a vector B including measurements of the value of the magnetic field in a direction at a measuring point, computing the components of a vector A, each component being a coefficient of a decomposition of the magnetic field into spatial harmonics proportional to the intensity of the current such that the matrix relation B=M&#xd7;A is satisfied, and determining the intensity.

Method for measuring the intensity of a current in a conductor

A device for measuring an electric field in a conducting medium comprises: two electrodes separated by a volume of an insulating medium; a device for measuring current coupled to said electrodes; and adjustment elements making it possible to vary a quantity on which the electrical conductivity of the field measuring device depends.

Calibration of a device for measuring an electric field in a conducting medium

A method of taking a plurality of measurements of the magnetic field using the plurality of sensors; includes assessing the inductive magnetic excitation; and determining the likely distribution of magnetic sources on the surface of the hull by resolving a system of equations derived from modeling the physical phenomena at play, on the basis of the plurality of measurements taken and the assessed inductive magnetic excitation. The model describes the induced magnetic sources as a distribution of dipolar sources and the remanent magnetic sources as a distribution of monopolar sources. A device () for determining the magnetization of the hull of a ship for implementing the method is also described.

Method for determining the magnetisation of the hull of a ship, and associated device

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Laure-Line Rouve