Device and method for measuring an electric current

Details Device and method for measuring an electric current Device and method for measuring an electric current

G - Physics

01

R

G01R 15/24 (2006.01) G01R 15/20 (2006.01) G01R 19/00 (2006.01)

Patent

CA 2357023

A current measuring device for measuring the current through one or a plurality of conductors (L1, L2, L3) of an array of n conductors, n being a natural number >= 2, comprises n+1 magnetic-field-sensitive sensors (S1 to S4) which are arranged such that two respective magnetic-field-sensitive sensors are arranged adjacent a respective conductor. A unit (12) for reading out output signals of the magnetic-field-sensitive sensors is provided. Furthermore, the current measuring device is provided with a unit (10) for calculating the current through one or a plurality of conductors on the basis of the read output signals and on the basis of coefficients which describe the influence of currents flowing through each of the n conductors and of a constant magnetic field on the output signal of each of the magnetic-field-sensitive sensors.

L'invention concerne un dispositif pour mesurer l'intensité d'un courant passant à travers un ou plusieurs conducteurs (L1, L2, L3) d'un ensemble de n conducteurs, n étant un entier naturel >/= 2. Ce dispositif présente n+1 détecteurs (S1 à S4) sensibles à un champ magnétique, qui sont placés de sorte que deux détecteurs soient adjacents à chaque fois à un conducteur. Ce dispositif comprend également une unité (12) servant à extraire des signaux de sortie des détecteurs, ainsi qu'une unité (10) servant à calculer l'intensité du courant passant à travers un ou plusieurs conducteurs, sur la base des signaux de sortie extraits et de coefficients qui décrivent l'influence de courants passant à travers chacun des n conducteurs et celle d'un champ magnétique continu sur le signal de sortie de chacun des détecteurs sensibles à un champ magnétique.

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