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Information × Registration Number 0217U000096, 0115U002655 , R & D reports Title Development and research of the methane concentration experimental sample optical meter for coal mines popup.stage_title Head Zory Anatoliy Anatoliyevich, Registration Date 18-01-2017 Organization The state higher educational institution " Donetsk National Technical University" popup.description2 For the first time a model of a measuring device of the concentration of methane is developed based on the optical absorption method, which, unlike the existing ones, takes into account the complex optoelectronic efficiency that allowed the development of recommendations and use them to build measuring instruments, and the basic measurement error is reduced to 0.2 vol.% to about 0.04 vol.% in the range from 0 to 4 vol.%, which exceeds the current metrics precision measuring instruments. For the first time a method of differential compensation of influence dust on the optical components of the measurement result of the concentration of methane, which, unlike existing ones, based on the introduction of the optical compensatory open channel, thus ensuring an additional error of not more than 0.16 vol.% methane concentrations in the range of from 0 to 4 vol.% of changing the dust concentration of from 0 to 3 g / m3 and the thickness of the dust layer deposited on the lens, from 0 to 10 mkm, and the margin for additional error is not less than 40%, which exceeds the current meters characteristics. For the first time a method of protection against dust optoelectronic component gauges was developed, which, unlike the existing ones, is based on the phenomenon thermophoresis, which reduced dust glasses in a 4 times, through the use of heating to 120°C, and with the additional use of deturbulence flow grids, reduce the degree of dustiness in 6 times, which ensured a proportional increase in the metrological reliability of measuring instruments in a mine. For the first time a method of hardware and software compensation of the temperature drift of output signals of the optical measuring instruments was developed, which, in contrast to existing uses as a temperature-sensitive element for hardware compensation measuring channel LED, and for software compensation - the information from the temperature sensor, thus ensuring the necessary additional error value of the temperature change of 0.09 vol.%, which is 2 times less than the regulated error. Product Description popup.authors Ахмедов Р.Н. Башков Є.О. Вовна О.В. Лактіонов І.С. Мокрий Г.В. popup.nrat_date 2020-04-02 Close