Design of a high precision instrument for combustible gas detection and alarm

LIU Zhu-qin; BAI Ze-sheng

doi:10.13873/j.1000-97872013.07.042

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Design of a high precision instrument for combustible gas detection and alarm

更新时间：2025-09-11

- Design of a high precision instrument for combustible gas detection and alarm
- Vol. 32, Issue 7, Pages: 71-73(2013)
- 作者机构：
  
  延安大学物理与电子信息学院
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872013.07.042
  CLC： TP277
- Published：2013
- 稿件说明：
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[1]刘竹琴,白泽生.一种高精度可燃气体检测报警器设计[J].传感器与微系统,2013,32(07):71-73.

LIU Zhu-qin, BAI Ze-sheng. Design of a high precision instrument for combustible gas detection and alarm[J]. 2013, 32(7): 71-73.
[1]刘竹琴,白泽生.一种高精度可燃气体检测报警器设计[J].传感器与微系统,2013,32(07):71-73. DOI： 10.13873/j.1000-97872013.07.042.

LIU Zhu-qin, BAI Ze-sheng. Design of a high precision instrument for combustible gas detection and alarm[J]. 2013, 32(7): 71-73. DOI： 10.13873/j.1000-97872013.07.042.

摘要

利用半导体可燃气体传感器MQ—2设计了一种可燃性气体体积分数检测报警器

由可燃性气体传感器、模/数转换电路、单片机、显示电路、声光报警电路等组成。传感器MQ—2将气体体积分数转换为电压信号

送A/D转换电路

转换后的信号送STC89C52单片机

单片机经过处理后控制显示单元显示气体体积分数

同时控制驱动报警电路实现声光报警。实验表明:该检测报警器对异丁烷、甲烷、天然气等可燃性气体检测精度达到了0.01%

具有检测性能稳定、线性度好、电路简单、成本低、小型化、便于调试等特点。

Abstract

Using semiconductor gas sensor MQ—2

design an instrument for flammable gas volume fraction detection and alarm

which is composed of combustible gas sensor

analog/digital conversion circuit

microcontroller

display circuit

acousto-optic alarm circuit.MQ—2 sensor converts gas volume fraction to voltage signal

transmit to A/D conversion circuit

signal after conversion is transmitted to STC89C52 MCU for processing

then gas volume fraction is displayed by control display unit

at the same time control and driving alarm circuit to achieve sound and light alarm.Experiments show that gas detection precision of the detection and alarm instrument on isobutane

methane

natural gas and other combustible gas reaches 0.01 %

it has characteristics of stable detection performance

good linearity

simple circuit

low cost

miniaturization

and convenient debugging.

关键词

Keywords

references

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