Self-power-supply mine gas concentration detecting device

Abstract

The invention relates to a self-power-supply mine gas concentration detecting device, which comprises a self-power-supply module, a gas sensor, a microcontroller and a ZigBee module, wherein the self-power-supply module comprises piezoelectric ceramic, an energy collecting unit, a lithium battery charging management unit and a standby lithium battery; the self-power-supply module, the gas sensor and the ZigBee module are electrically connected with the microcontroller; the gas sensor and the ZigBee module are electrically connected with the self-power-supply module; an energy collecting chip uses the Linear LTC3588-2 model; a lithium battery charging and discharging management chip uses the Linear LTC4071 model; a gas sensor uses a GJC4 type MJC4 / 3.0L sensor; and the microcontroller uses MSP430C1111. The self-power-supply mine gas concentration detecting device has the advantages that the underground work environment characteristics are utilized; the mechanical vibration energy in theenvironment is obtained through the direct piezoelectric effect of the piezoelectric ceramic; the energy is stored and used through the energy collecting unit; and the self power supply of the deviceis realized, so that the device can stably operate in complicated mine environment for a long time.

Description

technical field [0001] The invention relates to the technical field of coal mine safety production, in particular to a self-powered mine gas concentration detection device. Background technique [0002] Mine gas is a harmful gas mainly composed of methane in mines. It is an associated gas in the process of coal formation and coal metamorphism. Gas is a colorless, tasteless, odorless gas. The relative density of gas to air is 0.554, and the density of gas in the standard state is 0.716kg. Therefore, it often accumulates in the upper part and high top of the roadway. The permeability of gas is 1.6 times that of air. It is difficult to dissolve in water. It does not support combustion and cannot maintain breathing. When it reaches a certain concentration, it can cause people to suffocate due to lack of oxygen, and can burn or explode. Gas combustion and explosion are one of the main disasters in mines. Therefore, the real-time detection of gas concentration in mines is of gr...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a self-powered mine gas concentration detection device; the self-powered technology is used to solve the problem of frequent battery replacement or inconvenient power acquisition in traditional devices

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