FERROPROBE MAGNETOMETER AND METHOD TO MEASURE COMPONENTS OF INDUCTION OF MAGNETIC FIELD BY MEANS OF VECTOR COMPENSATION Russian patent published in 2015 - IPC G01R33/02 

FIELD: instrumentation.

SUBSTANCE: during implementation of the method they simultaneously transform the induction of the external magnetic field into AC voltage induced in three measurement coils and proportionate to three mutually orthogonal components of induction of the external magnetic field, the first back magnetisation field harmonics is suppressed, and the second one is amplified in the mode of parametric resonance in signals picked up from measurement coils, they perform amplitude detection and amplification of signals, record output voltage, convert this voltage into compensation currents. AC voltage and compensation currents are supplied to matching circuits, where they isolate AC currents from measurement coils and DC currents of compensation, and vector compensation is carried out by supplying compensation currents directly into measurement coils.

EFFECT: reduced error in measurements of magnetic field induction components, increased reliability and reduced mass and dimension parameters of a magnetometer sensor.

2 cl, 1 dwg