Gas-excessive alarm miner lamp circuit for mining operation

Abstract

The invention discloses a gas-excessive alarm miner lamp circuit for mining operation, which comprises a first resistor, a second resistor, a third resistor, a potentiometer, a first audion, a second audion, a third audion, a first capacitor, a second capacitor, a relay, a diode, a power source, a gas sensor, a miner lamp and a switch. When the gas density exceeds the limits, the purpose of alarming for the excessive gas is achieved by flicking the miner lamp; when the miner lamp flicks, a miner cannot normally work, so that a function of forcing the worker to stop working is achieved and the safety operation for mining is benefited; the excessive alarm value of the gas is adjusted by adjusting the resistance value of the potentiometer; the gas-excessive alarm miner lamp circuit has a simple circuit structure and is low in manufacturing cost; the gas-excessive alarm miner lamp circuit has the characteristics of stable work property and high sensitivity and has the popularization and use values.

Description

technical field [0001] The invention relates to a mine gas detection circuit, in particular to a gas excess alarm miner's lamp circuit for mine operations. Background technique [0002] Gas explosion is one of the most serious disasters in coal mine production, which not only causes a large number of casualties, but also destroys underground production and safety facilities; gas (methane CH4) alarm miner's lamp is a gas alarm device attached to the miner's lamp, when the gas exceeds the limit , alarm in the form of sound, light or digital display to warn users that the gas exceeds the limit. Among them, the flashing gas alarm miner's lamp starts to flicker after the gas concentration exceeds the standard, so that the staff cannot work normally and then evacuate actively. It is especially suitable for underground Scattered operating personnel carry and use, most of the existing flashing gas alarm miner's lamps have complex circuit structures and high production costs, which i...

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Problems solved by technology

[0002] Gas explosion is one of the most serious disasters in coal mine production, which not only causes a large number of casualties, but also destroys underground production and safety facilities; gas (methane CH4) alarm miner's lamp is a gas alarm device attached to the miner's lamp, when the gas exceeds the limit , alarm in the form of sound, light or digital display to warn users that the gas exceeds the limit. Among them, the flashing gas alarm miner's lamp starts to flicker after the gas concentration exceeds the standard, so that the staff cannot work normally and then evacuate actively. It is especially suitable for underground Scattered workers carry and use it. Most of the existing flashing gas alarm miner's lamps have complex circuit structures and high production costs, which increases the difficulty of popularization in mine operations.

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