Matrix - MQ-2 Gas Sensor

查看中文

1 Introduction

MQ-2 烟雾传感器

• The Matrix-MQ-2_Gas_Sensor uses the MQ-2 gas sensor which is sensitive to LPG, i-butane, propane, methane ,alcohol, Hydrogen, smoke and etc and is used to detect multiple gas leakage. This makes it suitable in various applications of gas leak detection.
• The output voltage of the module is positively proportional to the gas concentration.

2 Features

• Standard 3 Pin Interface
• PCB Dimension(mm): 24 x 32

• Pin Description:

Pin	Description
S	GPIO
V	Supply Voltage 5V
G	Ground

3 Basic Device Operation

• MQ-2_Gas_Sensor模块的主要器件是一个具有快速响应和恢复特性的MQ-2气体传感器，传感器所使用的气敏材料是在清洁空气中电导率较低的二氧化锡(SnO2)，当传感器所处环境中存在可燃气体时，

传感器的电导率随空气中可燃气体浓度的增加而增大，传感器将电导率的变化转换为与该气体浓度相对应的模拟信号输出，灵敏度可以通过电位计进行调节。

5 Update Log

5.1 Feb-24-2016

• Added Sections 1, 2, 3 and 4