Device and method for measuring magnetic field(s) with calibration superimposed on the measurement and corresponding uses

Abstract

The invention relates to a device for measuring magnetic field(s). This device comprises at least one measurement acquisition pathway (221, 222, 223; 231, 232, 233) comprising a measurement current generator (24), a coil (25), a measurement resistor (26), at least one amplifier (27) and at least one antialiasing filter, delivering a measurement voltage. According to the invention, the device for measuring magnetic field(s) comprises means for determination of at least one electrical quantity representative of said acquisition pathway. These means of determination comprise means of injection (21) of a predetermined calibration current, comprising at least two frequency terms at at least two frequencies distinct from that (those) of said measurement current, said calibration current being superimposed on said measurement current. The device for measuring magnetic field(s) also comprises calculation means delivering an estimate of said at least one electrical quantity at the frequency or frequencies of said measurement current.

Dependencies are inferred from the claim text.