CN203132981U - Mining portable multifunctional methane alarming device - Google Patents

Abstract

The utility model relates to a mining portable multifunctional methane alarming device. A signal processing display module comprises a singlechip; the periphery of the singlechip is connected with a display module and a temperature probe; and a methane concentration detection module consists of an infrared methane probe, a filtering circuit and an amplification circuit which are sequentially connected with one another. The methane concentration detection module detects the environment methane content in a mine through the novel infrared probe, and the detection process is quick, accurate and reliable and is not interfered by other gas in the environment; and the signal processing display module adopts the high-level singlechip, so that the circuit integration degree is high, and the signal processing display module has multiple functions of displaying methane concentration in real time, giving an alarm on over-limit methane concentration, displaying voltage of a battery, an environment temperature and time, and the like.

Description

Mining portable multi-function methane warning instrument

Technical field

The utility model relates to a kind of warning device, particularly a kind of portable multi-function methane warning instrument that can detect methane concentration in the subsurface environment of colliery fast, accurately, reliably.

Background technology

Traditional mining portable multi-function methane warning instrument adopts black-and-white component thermocatalysis probe and discrete component circuit more, if the complicated poor reliability of circuit and heat catalytic element run into sulfide (H under coal mine ₂S, SO ₂Deng) and during high dense methane gas, can cause heat catalytic element poisoning, inefficacy or sensitivity to descend, thereby cause the alarm cisco unity malfunction.

The utility model content

The purpose of this utility model is that the bad adaptability, the sensitivity that solve existing methane warning instrument existence easily descend, thereby the shortcoming that causes the alarm cisco unity malfunction, a kind of mining portable multi-function methane warning instrument that can detect methane concentration under the coal mine fast, accurately, reliably that provides.

To achieve these goals, the utility model has adopted following technical scheme:

A kind of mining portable multi-function methane warning instrument, it is characterized in that it is made up of methane concentration detection module, signal processes and displays module and power module, described signal processes and displays module comprises single-chip microcomputer, and SCM peripheral is connected with display module and temp probe; Described methane concentration detection module is made up of the infrared methane probe, filtering circuit and the amplifying circuit that connect successively; Amplification circuit output end is connected with single-chip microcomputer, and power module is connected with signal processes and displays module with the methane concentration detection module.

In the technique scheme, the infrared methane probe is selected the middle infrared optical module that carries thermoelectric cooling system for use in the methane concentration detection module, fast, stable methane concentration in the environment is converted into faint electric signal, filtering in the methane concentration detection module again, amplifying circuit are handled the d. c. voltage signal that changes 0～1V into, linear corresponding 0～10% methane concentration.This voltage signal is delivered to the processes and displays module, through the single-chip microcomputer calculation process, calculates current methane concentration, and the LED charactron by display module shows with the form of numerical value again.Simultaneously this alarm also can by single-chip microcomputer calculate current alarm cell voltage, the methane concentration overload alarm be set, show the current time, and can pass through the built-in 1-WIRE digital temperature sensor sense ambient temperature of alarm.

Advantage of the present utility model is: methane concentration detection module employing new infrared probe, testing process fast, accurately, reliably are not subject to other gases interference in the environment; Signal processes and displays module adopts senior single-chip microcomputer, the circuit level height, and diverse in function not only can show methane concentration in real time, and has functions such as methane concentration overload alarm, cell voltage demonstration, environment temperature demonstration, time showing.Be specially adapted to getting working face, return airway, draw out methane and the operating personnel of electromechanical equipment chamber, site administrator and the staff of flowing wear with oneself.

Description of drawings

Fig. 1 is schematic diagram of the present utility model.

Embodiment

Below in conjunction with Fig. 1, the utility model is further described by embodiment.

As shown in Figure 1, a kind of mining portable multi-function methane warning instrument that the utility model provides mainly is made up of signal processes and displays module and methane concentration detection module, and is powered by power module (lithium battery).

The methane concentration detection module mainly is made up of amplifying circuit, filtering circuit and infrared methane three partial circuits of popping one's head in.During operate as normal, the infrared methane probe is converted into faint electric signal with the methane concentration that detects, and this electric signal amplifies through amplifying circuit through the filtering circuit filtering interfering again, sends into signal processes and displays module.

Signal processes and displays module mainly is made up of display module (charactron), single-chip microcomputer and temp probe three partial circuits.Wherein single-chip microcomputer is responsible for identifying the electric signal that the methane concentration detection module sends here and is read the environment temperature that temp probe detects, single-chip microcomputer passes through numerical operation again, methane concentration value, ambient temperature value are shown by charactron, and single-chip microcomputer also is responsible for the functions such as detection, the setting of methane warning value, current time demonstration of cell voltage in addition.

It should be noted that at last: above embodiment is only in order to illustrate the utility model and the described technical scheme of unrestricted the utility model; Therefore, although this instructions has been described in detail the utility model with reference to the above embodiments,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from technical scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in the claim scope of the present utility model.

Claims (1)

1. mining portable multi-function methane warning instrument is characterized in that it is made up of methane concentration detection module, signal processes and displays module and power module, and described signal processes and displays module comprises single-chip microcomputer, and SCM peripheral is connected with display module and temp probe; Described methane concentration detection module is made up of the infrared methane probe, filtering circuit and the amplifying circuit that connect successively; Amplification circuit output end is connected with single-chip microcomputer, and power module is connected with signal processes and displays module with the methane concentration detection module.

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