Authors: LisakovS.A., A.I. Sidorenko, SipinE.V.

Title of the article: Computer simulation of optical-electronic characteristics of gases and coal dust gas concentration for control of emergency and credits situations in coal mines

Year: 2018, Issue: 5, Pages: 5-17

Branch of knowledge: Earth sciences

Index UDK: 622.81

DOI: 10.26730/1999-4125-2018-5-5-17

Abstract: Computer simulation of electro-optical sensors for the concentration of methane, carbon monoxide, dioxide and coal dust was carried out. These sensors are part of multi-criteria electro-optical device for monitoring emergency and preemergency situations in coal mines. The main analytical dependencies for the simulation of electro-optical sensors have been determined. Computer model has been developed on the basis of this dependencies. The verification of the computer model adequacy is based on experimental data. The relative error in modeling the CO2 sensor does not exceed 5%, CO – 7%, C2H4 – 4%, coal dust sensor – 7%. Simulation of the spectral transfer coefficient of gases and dust-air mixture was carried out. The effect of cross-sensitivity for gas EOS and coal dust EOS for clarifying of control spectral ranges was analyzed based on simulation re-sults. Methane concentration is controlled in the spectral range of 3.2 – 3.7 μm, carbon dioxide – in spectral range of 4.2 – 4.4 μm, carbon monoxide – in spectral range of 4.5 – 4.7 μm. The hardware (source and receiver of radiation) is selected for opto-electronic sensors of the concentration of gases and dust. Investigation of the foreign gases effect on the readings of the EOS, which controls the concentration of an individual gas (cross sensitivity) was carried out. Effect of extraneous gases on the EOS readings of the concentration of dust and gases has been determined.

Key words: simulation control methane carbon monoxide carbon dioxide coal dust transfer function detection threshold

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