METHOD FOR CONVERTING SIGNALS OF A CORIOLIS FLOWMETER WITH INCREASED ACCURACY AND RESISTANCE TO NOISE, A DEVICE FOR CONVERTING SIGNALS OF A CORIOLIS FLOWMETER Russian patent published in 2022 - IPC G01F1/84 

FIELD: measuring technology.

SUBSTANCE: invention relates to a Coriolis flowmeter, namely to methods for converting signals of a Coriolis flowmeter with increased accuracy and resistance to noise, as well as a device for converting signals of a Coriolis flowmeter. The method consists in forming a discrete data set using an analog-to-digital converter at a certain preset digitization frequency from each of the oscillation measurement sensors, which are then subjected to discrete conversion in the frequency and phase difference estimation module based on a discrete spectral characteristic, forming a set of values near the maximum of the spectrum and transmitting their values to the frequency and difference refinement module phases based on a continuous spectral characteristic, which builds a continuous spectral characteristic based on these values by means of an iterative optimization procedure, obtaining information equivalent to the true continuous spectra of analog signals. The Coriolis flowmeter signal conversion device includes a frequency and phase difference estimation module based on a discrete spectral characteristic and a frequency and phase difference refinement module based on a continuous signal, which are made, including at the hardware level, in order to implement a directional, connected, logical structure that makes it possible to obtain a discrete conversion of the measuring signal and mutually unambiguously coordinate it with equivalent continuous conversion of exact analog input signals.

EFFECT: high measurement accuracy, the ability to measure in real time even when the fluid changes.

4 cl, 4 dwg