METHOD OF MEASURING USING DIFFERENTIAL SENSOR Russian patent published in 2020 - IPC G01N27/00 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement equipment and can be used for measurement using differential sensor. Differential transducer comprises at least two transducers connected to common output of transducer and provided with possibility to supply excitation signals. To rectify the output signal of the sensor, a synchronous detector synchronized with the excitation signal and configured to generate a pair of quadrature signals is used. To carry out the measurement cycle, the sensor is simultaneously supplied with the first and second excitation signals which are antiphase. Using the registration device, values of the first quadrature signal pair are recorded at the output. Then supply of the first excitation signal is cut off while maintaining supply of the second excitation signal and the value of the second pair of quadrature signals is recorded at the output. Further, on the basis of the obtained values of the first pair, a scalar unbalance value of the sensor corresponding to the measured value is found. Values of the second pair are used to compensate for errors in finding scalar value of unbalance of the sensor. Measurement cycle is performed at least once.

EFFECT: reduction of measurement error of useful signal of imbalance of differential sensor intended for excitation with high-frequency antiphase signals.

10 cl, 4 dwg