GASES IN THE ATMOSPHERE CONCENTRATION REMOTE MEASUREMENT METHOD Russian patent published in 2019 - IPC G01N21/61 F17D5/02 

FIELD: measurement technology; gas industry.

SUBSTANCE: invention relates to the field of security provision during the gas transportation and storage and concerns a method of the gases in the atmosphere concentration remote measurement. Measurements are carried out by containing the optical unit and the data processing means remote gas analyzer. Optical unit includes the laser module with diode laser, analytical and reference channels. During measurements, by changing and stabilizing the diode laser temperature, rearranging the radiation frequency in the range of up to 100 cm^-1. In addition, changing the diode laser supply current value and performing the scanning in the range of up to 5 cm^-1. Analytical A(t) and reference R(t) channels amplified signals are processed in real time. At that, determining the reference channel signal cross-correlation function F(z) and the autocorrelation function: G(z), using these functions values performing the analytical channel signal noise filtering, depending on the F(z) and G(z) values determining the cross correlation coefficient and determining the gas in the analytical channel concentration depending on the cross correlation coefficient, the gas concentration in the reference cell and the optical path length in the analytical and reference channels.

EFFECT: technical result consists in enabling of the several gases leakage simultaneous timely detection possibility.

5 cl, 6 dwg