Design of Advanced System for Air Pollution Detection

Design of Advanced System for Air Pollution Detection

Introduction to the System

In this article I have discussed about the Design of Advanced System for Air Pollution Detection. The purposed system is using the sensors that are used for sensing the amount of harmful gases in the air that are extremely harmful to the human life. These gases affects the human life badly. These gases can cause severe diseases that can lead up to the death. The inputs are being taken from the sensors and sent to the monitor. After the code is being executed in Arduino software, the boundary accumulation excels the normal range and as a result the analogue values are being generated. The sensor will update the value by sensing the air after every 30s. The values obtained are stored in data base so the only authorized personal can have access to the data remotely. And the graph is also generated from the obtained values. The purposed system is given below:

Block Diagram for purposed system
                              Block Diagram for purposed system

Air Pollution Systems Benefits

Keeping the air clean might be advantageous for your company. You can lower the likelihood that your employees and visitors may have health issues, which could help you avoid staff illness and compensation claims.

You can reduce your risk of fines and legal trouble by adhering to air quality regulations. However, in addition to lowering legal and financial concerns, there are a number of other advantages. Environmentally responsible business practices can also help your company save money.

Cost savings from your company’s reduced air pollution often include:

  • Lowering insurance costs by conducting risk evaluations
  • Fewer chances of dust clogging or damaging machinery
  • Fewer chances of workers’ compensation and public liability claims


This system shows a complete setup for the monitoring of air quality system based upon the Raspberry Pie containing Mq-2 gas sensor, Mq-7 gas sensor and also Mq-135 gas sensor. These sensors are then placed on the Raspberry Pie board which are easy to use.

  • Technical Data for MQ2 Gas Sensors:
  • Features:
  • Long range degree for recognizing
  • A healthy and lasting life
  • Quick reaction
  • Simplicity of the circuit

Other features of MQ2 gas sensors are shown in tables below:

Standard Conditions for MQ2 gas sensor


Parameter Name Technical Condition Remarks
VC Circuit Voltage 5V at 100mA AC or DC
VH Heating Voltage 5V at 100mA AC or DC
RL Load Resistance Can adjust  
PH High Resistance 33Ω +­ – 5% Room Temperature
RS Heating Composition Less than 800mW  
  Sensing Resistance 3K Ω-30K Ω  

Table 1 Standard Conditions for MQ2 gas sensor

Gas Detecting Ranges of MQ2 gas sensor

Gas Range
LPG 200ppm to 5000ppm
Butane 300ppm to 5000ppm
Methane 5000ppm to 20000ppm
Alcohol 10ppm to 300ppm

Table 2 Gas detecting ranges of MQ2 Gas Sensor

Gas Sensor Graphs

For every gas sensor we can plot a graph for an easy identification. By clicking the option of switch to graph button from home tab we can easily generate graphs.

MQ2 gas sensor graph
                                            MQ2 gas sensor graph
MQ7 gas sensor graph
                                                  MQ7 gas sensor graph

Also read here

Leave a Reply

Your email address will not be published. Required fields are marked *