Method for on-line regulating-correcting firedamp sensor for mining safety monitoring system

Abstract

The invention relates to an on-line timing method of mash gas sensor of safety monitoring system for mining, which includes three modes: 1) doing on site alignment calibration of mash gas sensor, that is controlling the mash gas sensor and sending the alignment calibration status messages to the monitoring branch station and the monitoring server out of mine; the monitoring server out of mine displays the mash gas sensor is in alignment calibration condition; then doing on site ventilation alignment calibration and service interruption functional test of the corresponding mash gas sensor, at last ending the alignment calibration condition; setting a mash gas sensor in a alignment calibration condition by the monitoring branch station, then doing on site ventilation alignment calibration and service interruption functional test of the corresponding mash gas sensor, at last ending the alignment calibration condition; setting a mash gas sensor in a alignment calibration condition by the monitoring server out of mine, then doing on site ventilation alignment calibration and service interruption functional test of the corresponding mash gas sensor, at last ending the alignment calibration condition. The invention can shorten the blind zone in monitoring time, in order to improve downhole operation safety and reduce mis-alarming.

Description

technical field [0001] The invention relates to an online adjustment method of a gas sensor of a mine safety monitoring system. Background technique [0002] During the calibration process of the gas sensor of the mining safety monitoring system, due to the cumbersome steps, false alarms are often caused, and the monitoring server cannot judge whether the displayed gas concentration value is the actual on-site value, which brings inconvenience to normal underground operations. [0003] Article 8.3.6 of my country's "AQ1029-2007 Coal Mine Safety Monitoring System and Testing Instrument Use Management Regulations" stipulates that the methane over-limit power-off blocking and methane wind power blocking functions of the mining safety monitoring system must be tested every 10 days , especially to regularly calibrate the gas sensor of the mine safety monitoring system to ensure safe production. [0004] At present, the existing safety monitoring system takes too long in the proce...

AI Technical Summary

Problems solved by technology

Once the underground gas concentration value exceeds the limit in the blind area of ​​the monitoring period, it will bring great harm to the safe production of the mine

[0006] In addition, if the gas calibration personnel do not notify the dispatcher of the on-site calibration of the gas sensor before going down the well, or if the gas calibration personnel need to temporarily calibrate the gas sensor at a certain place underground due to special circumstances, they cannot Accurately inform the dispatcher of the start and end time of the calibration, in this case, often cause problems such as gas false alarms, which affect normal production operations

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