Commissariat a L'energie Atomique Et Aux Energies Alternatives

Commissariat a L'energie Atomique

Minmaxmedical

Societe D'exploitation De Produits Pour Les Industries Chimiques Seppic

François Bertrand

Umberto Rossini

Jean-Michel Leger

Matthieu Le Prado

Olivier Gravrand

Saifeddine Aloui

Elisabeth Delevoye

Sophie Morales

Thomas Jager

Laurent Dupuis

Augustin Palacios Laloy

Mathieu Baicry

Sandra Rousseau

Vincent Josselin

Jérôme Gaucheron

Stéphane Lavallée

Loïc Huguel

Marie-Constance Corsi

Mickaël Chave

Jérôme Paulet

Jaroslaw Rutkowski

Sébastien Deville

The invention relates to an electromagnetic position tracking system, including: an electromagnetic field emission device including at least one emitter coil and, connected to the emitter coil, a first generator of an electric signal for exciting the emitter coil; a device for receiving the electromagnetic field emitted by the emission device, including at least one receiver coil, and, connected to the receiver coil, a circuit for reading an electric signal induced in the receiver coil; and a system for measuring at least one parameter of the reception device, including, connected to the receiver coil, a second generator of an electric signal for exciting the receiver coil.

Electromagnetic position tracking system

A device for measuring an electric field in a conducting medium, including: an insulating enclosure; first, second, and third pairs of electrodes, the electrodes of a same pair being arranged on opposite external walls of the enclosure, and the electrodes of the first, second, and third pairs being centered on first, second, and third orthogonal axes; a first conductive coil; a first pair of switches enabling to alternately connect the first coil between the electrodes of the first, of the second, and of the third pair of electrodes; and a single magnetometer.

Device for measuring an electric field in a conducting medium

A vectorial magnetometer (), measures the components of a magnetic field in three directions (Oxyz) using a scalar magnetometer (). The field is periodically modulated in each of the directions by generators (Gx, Gy, Gz) which have a specific frequency for each direction and that power coils (Ex, Ey, Ez). Synchronous demodulation of the of the output signal of the scalar magnetometer () for each of the three frequencies permits the relative continuous component of each axis to be found. The vectorial magnetometer () is characterized in that it has means (Dx D'x, Dy D&#x2032;y, Dz D&#x2032;z) that can carry out a double demodulation for phase and quadrature for each of the frequencies and processing means () that use the continuous component modules for phase and quadrature to calculate a transfer function of the scalar magnetometer at the frequency in question, and to apply this function to the correction of the components.

Vector measurement of a magnetic field

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La Tronche, France

François Bertrand