CAPACITIVE HIGH-FREQUENCY PHASE SYSTEM FOR PICKING UP INFORMATION FROM SENSITIVE ELEMENT OF GRAVIMETER Russian patent published in 2024 - IPC G01V7/02 

FIELD: measuring.

SUBSTANCE: invention relates to measurement equipment and can be used to create high-precision relative gravimeters used for gravimetric surveys, measuring variations of free fall acceleration with time, constructing gravimetric maps, preparing construction sites and for solving other gravimetric tasks. Disclosed is a capacitive high-frequency phase system for picking up information from the sensitive element of the gravimeter, which includes a three-plate flat electric capacitor with a movable middle plate connected to one of the inputs of the phase detector, output of which is connected to voltage meter through low-frequency filter. Reference voltage source is a meander-type periodic voltage generator and a phase inverter connected in series to it. Output of the meander voltage generator is connected to one of the fixed plates of the capacitor and to the second input of the phase detector, and the output of the phase inverter is connected to the second fixed plate of the capacitor.

EFFECT: high sensitivity of the capacitive data pickup system.

2 cl, 3 dwg