Gas detection alarm device

Abstract

The invention provides a gas detection alarm device which comprises acquisition devices. The acquisition devices are arranged in an underground environment and are used for acquiring various environmental parameters in real time, and output ends of the acquisition devices are connected with input ends of a microprocessor by wires; output ends of the microprocessor are respectively connected with an alarm device and a power switch used for controlling underground power supply circuits; a relay router is interactively connected with the microprocessor, and underground information is wirelessly transmitted to an upper computer of a ground monitoring center by the relay router. The gas detection alarm device has the advantages that serious accidents of gas combustion and explosion can be fundamentally greatly reduced owing to the audible and visual alarm actions of the alarm device and the power-off action of the power switch; the information is wirelessly transmitted via the relay router, so that an underground condition can be effectively known and controlled via the upper computer of the ground control center.

Description

technical field [0001] The invention relates to an underground safety monitoring system of a coal mine, in particular to a gas detection and alarm device. Background technique [0002] Under the influence of geological conditions, environment and toxic and harmful gases, various mining accidents occur frequently in coal mine operations, causing serious damage to life and property. Among the toxic and harmful gases, gas is the most harmful. Gas is a hydrocarbon gas stored in coal seams. The main component is methane. It is a flammable and explosive gas that poses a major threat to the safety of coal mine production. [0003] There are three conditions for gas to explode or burn, one is its concentration, the gas concentration in the air reaches 5% to 16%; combustion. And when the concentration of gas in the air is less than 5%, it will not burn, and when it is greater than 16%, it will neither explode nor burn. Therefore, the accurate detection of gas concentration has bec...

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Problems solved by technology

[0004] At present, the gas concentration is mainly detected, but most people do not pay attention to the detection of the other two factors, which leads to monitoring failure, frequent mine accidents, and serious personal or property damage

In addition, the current monitoring is to install sensors for detecting gas concentration in the long tunnel underground of the coal mine, and the sensors are connected by wires, and then the data is transmitted to the computer on the mine for analysis and processing. When a gas explosion or combustion occurs, these wires have a major safety hazard and will become a fuse to cause a greater disaster

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