High-sensitivity three-axis magnetoelectric weak magnetic sensor

The invention relates to a high-sensitivity three-axis magnetoelectric weak magnetic sensor, which comprises a plurality of magnetoelectric composite materials, the first bias magnet and the second bias magnet are respectively placed at two ends of each magnetoelectric composite material and are marked as a first bias magnet, a magnetoelectric composite material and a second bias magnet; the special signal circuit is independently connected with the output end of each magnetoelectric composite material and is used for converting a charge signal with high input impedance into a low-impedance voltage to be output, or the special signal circuit is connected after a plurality of magnetoelectric composite materials are connected in series and is capable of converting the charge signal with high input impedance into the low-impedance voltage to be output; the plurality of first bias magnets/magnetoelectric composite materials/second bias magnets and the special signal circuits are packaged in the three-axis framewo