MAGNETIC FIELD CONVERTER FOR INCLINOMETER Russian patent published in 2005 - IPC

FIELD: magnetic azimuth converters and all-purpose magnetometers.

SUBSTANCE: converter has ferro-probe, oscillator, sync detector, resistor, reference signal source. Oscillator has its first and second outputs connected to excitation winding of ferro-probe. Input of sync detector is connected with output of band-pass filter. Control input of sync detector is connected with output of oscillator and output of sync detector is connected with first input of dc amplifier. Output of dc resistor is connected with input of band-pass filter through resistor. First output of reference signal source is connected with input of band-pass filter through signal winding. Second output of reference signal source is connected with second input of dc amplifier. Dc amplifier has lower frequency filter characteristic. Constant signal shift at output of dc amplifier equals to voltage at first output of reference signal source.

EFFECT: high precision of measurement.

1 dwg