One kind of an alternating magnetic field sensing device

The present invention relates to an alternating magnetic field sensing device, comprising at least one magnet and at least one electrical power conversion module; said magnet and said electrical power conversion module is mechanically connected to said magnet magnetic signal which is received in the alternating magnetic field is converted to mechanical force and electric force is transmitted to said conversion module; said electrical power conversion module to provide the mechanical force of the magnet is converted into an electric signal. The present invention is an alternating magnetic field sensing device to achieve a magnet alternating magnetic field signal is converted to a force, a force conversion module converts the alternating magnetic field force to the electric signal converted electrical signal; this means high sensitivity, by the static magnetic field It is small, little affected by the high-frequency interference.