Device for detecting a magnetic field and system for measuring a magnetic field comprising such a device

Abstract

The present description concerns a system (10) for measuring a magnetic field (Bz) comprising a magnetic field detection device (20) comprising a tapered acoustic waveguide (40), an electrically-conductive wire (50) rigidly coupled to a tapered end of the guide, and an electroacoustic transducer (60) rigidly coupled to the base of the guide; and a control and acquisition device (30) coupled to the magnetic field detection device comprising a generator (33I) supplying a pair of current pulses of opposite directions or a plurality of frequency-modulated current pulses to the conductive wire and an acquisition circuit (32) detecting electrical signals (S) supplied by the electroacoustic transducer or a generator supplying a pair of voltage pulses of opposite signs or a plurality of frequency-modulated voltage pulses controlling the electroacoustic transducer and an acquisition circuit detecting electrical

Dependencies are inferred from the claim text.