High-precision intelligent mine ventilation air volume online measurement method based on multi-sensor information fusion

Abstract

In accordance with the Provision 105 of the Coal Mine Safety Regulations, the mine must establish a wind measurement system. High-precision on-line automatic measurement of the mine tunnel air volumeis the basis of advanced early warning and intelligent regulation and control of the mine ventilation system, and the safety level of mine production can be improved. The invention provides a high-precision intelligent mine ventilation air volume online measurement method and device based on multi-sensor information fusion. The device takes an embedded system as the core of measurement, data processing and communication, integrates a thermal conductivity type wind speed sensor, a wind direction sensor, a distance measuring sensor and an environmental parameter measuring sensor, and can realizethe functions of high-precision online nondestructive measurement of the wind volume, automatic identification of the wind direction and on-site debugging-free automatic calibration. Besides, the measurement device obtains the air volume measurement value of the associated air path based on communication, the air volume measurement value of the tunnel can be verified, the correct value of the airvolume of the tunnel is obtained by combining the self-diagnosis function of the device, and the reliability of tunnel ventilation volume detection is further improved.

Description

technical field [0001] The invention belongs to a mine safety testing device, in particular to an intelligent online measurement method for mine ventilation air volume based on multi-sensor information fusion. Background technique [0002] Mine ventilation introduces fresh air into the mine, dilutes harmful gases and dust underground, and ensures safe production; at the same time, it can adjust the underground climate, increase the oxygen concentration, meet the needs of personnel for oxygen, and create a good working environment. [0003] Article 105 of the "Coal Mine Safety Regulations" stipulates that mines must establish a wind measurement system, and conduct a comprehensive wind measurement every 10 days. For mining face and other places where wind is used, wind measurement should be carried out at any time according to actual needs, and the results of each wind measurement should be recorded and written on the record board of the wind measurement location. Measures sh...

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Problems solved by technology

[0005] The measurement of the ventilation volume of each branch of the mine is obtained indirectly by measuring the average wind speed. Due to the different shapes of the section of the mine ventilation roadway, the uneven wind speed at each point in the section, and the lack of a straight section required for accurate measurement of the ventilation volume in most cases The problem of turbulent flow, so the air volume sensor needs to be calibrated on site after installation. The above situation is also the reason why the measurement of air volume is generally believed to be inaccurate in the academic circles.

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