MAGNETOMETER (VARIANTS) Russian patent published in 1999 - IPC

FIELD: applicable for determination of magnetic field induction vector, can be used in magnetometric prospecting, navigation, emergency rescue operations. SUBSTANCE: the magnetometer has three single-component collinear magnetosensitive pickups, two of which are placed in magnetic cylindrical screens. The screen axes are mutually orthogonal and perpendicular to the sensitivity axes of the magnetosensitive pickups. The screens are furnished with demagnetizing winding. The device uses also three amplifying-converter units, which are connected to the respective magnetosensitive pickups. The magnetometer has feedback circuits running from the amplifying- converter units to the pickups. The outputs of the amplifying-converter units are connected to the addition unit, and the output of the addition unit is connected to the recorder. The demagnetizing windings, excitation circuits of the magnetosensitive pickups, amplifying- converter units are connected to the alternating emf generator. In the second variant of magnetometer the addition unit output is connected to the input of the unscreened magnetosensitive pickup, and the recorder - to the amplifying-converter unit of this pickup. EFFECT: realization of narrow directivity pattern. 5 cl, 5 dwg