The level of pollution has increased with times by lot of factors like the increase in population, increased vehicle use, industrialization and urbanization which results in harmful effects on human well by directly affecting health of population exposed to it. In order to monitor In this project we are going to make an” IOT Based Air Pollution Monitoring System ” in which we will monitor the Air Quality over a web server using internet and will trigger a alarm 

 When the air quality goes down beyond a certain level, means when there are sufficient amount of harmful gases are present in the air like CO2, smoke, alcohol, benzene and NH3. It will show the air quality in PPM on the LCD and as well as on web page so that we can monitor it very easily. In this IOT project, you can monitor the pollution level from anywhere using your computer or mobile. System is designed, implemented and tested to monitor the pinpoints of air pollution of any area.

 It consists of a micro controller, gas sensors, mobile unit, a temporary memory buffer and a web server with internet connectivity which collects data from different locations along with coordinate’s information at certain time of a day. The readings for particular location are averaged in a closed time and space.

The Global Positioning System (GPS) module is attached to a system to provide accurate representation of pollution sources in an area. The recorded data is periodically transferred to a computer through a General Packet Radio Service (GPRS) connection and then the data will be displayed on the dedicated website with user acceptance. As a result large number of people.


Letter of Transmittal     II

Declaration     III

Certificate     IV

Acknowledgement     V

Executive Summary     VI



1.1    Introduction    01

1.2    Historical Background    01

1.3    Objectives    04

1.4    Summary    04



2.1    IoT Projece    08

2.2    About IoT    09

2.3    Arduino    13

2.4    Circuit Diagram and Explanation    14

2.5    Arduino Description    15

2.6    Working Explanation    18




Testing and Output of the Project


Design Specificatio



3.1    Gass Sensor    21

3.2    Gas Sensor Diagram    22

3.3    Gas Detectors Work    25

3.4    Code Explanstion    26



4.1    LCD Display    36

4.2    LCD Terminal    37

4.3    Display Diagram    44

4.4    Display Code    46



5.1    Potentiometer    51

5.2    Digital Analog Potentiometer    52

5.3    Potentiometer Diagram    54

5.4    Buzzer    55

5.5    Buzzer Diagram    56



                  DISCUSSION AND CONCLUSION   

7.1    Discussion    61

7.2    Limitation    62


3.4    Future Works

Conclusion    63

    References    64


Figure 2.1    Figure Name     1

Figure 2.2    Figure Name    2

Figure 2.3    Figure Name    3

Figure 2.4    Figure Name    4

Figure 2.5    Figure Name    5

Figure 2.6    Figure Name    6

Figure 2.7    Figure Name    7

Figure 2.8    Figure Name    8

Figure 2.9    Figure Name    9

Figure 2.10    Figure Name    10

Figure 3.1    Figure Name    11

Figure 3.2    Figure Name    12

List of Tables

Table 3.1    Table Name    1

Table 3.2    Table Name    2

Table 4.1    Table Name    3

Table 5.1    Table Name    4

Table 5.2    Table Name    5



1.1      Introduction

The main objective of IOT Air & Sound Monitoring System is that the Air and sound pollution is a growing issue these days. It is necessary to monitor air quality and keep it under control for a better future and healthy living for all. Due to flexibility and low cost Internet of things (IoT) is getting popular day by day.

 With the urbanization and with the increase in the vehicles on road the atmospheric conditions have considerably affected. Harmful effects of pollution include mild allergic reactions such as irritation of the throat, eyes and nose as well as some serious problems like bronchitis, heart diseases, pneumonia, lung and aggravated asthma. Monitoring gives measurements of air pollutant and sound pollution concentrations, which can then be analyzed interpreted and presented. This information can then be applicable in many ways. Analysis of monitoring data allows us to assess how bad air pollution and sound pollution from day to day.

1.2      Historical Background

The commercial meters available in the market are Fluke CO-220 carbon monoxide meter for CO, Amprobe CO2 meter for CO2, For Semicon LPG gas leakage sensor alarm for LPG leakage detection. The researchers in this field have proposed various air quality monitoring systems based on WSN, GSM and GIS.

Now each technology has limited uses according to the intended function, as is meant for users with trans-receiver, Bluetooth. GIS based system is designed, implemented and tested to monitor the pinpoints of air pollution of any area. It consists of a micro controller, gas sensors, mobile unit, a temporary memory buffer and a web server with internet connectivity which collects data from different locations along with coordinate’s information at certain time of a day.

 The readings for particular location are averaged in a closed time and space. The Global Positioning System (GPS) module is attached to a system to provide accurate representation of pollution sources in an area.

1.3       Objectives 

Objects, animals or people that are provided with unique identifiers and the ability to transfer data over a network without requiring human-to-human or human-to-computer interaction.

IoT has evolved from the convergence of wireless technologies, micro-electro mechanical systems (MEMS), micro services and the internet.

 The convergence has helped tear down the silo walls between operational technology (OT) and information technology (IT), allowing unstructured machine-generated data to be analyzed for insights that will drive improvements.

1.4   Summary

The system to monitor the air of environment using Arduino microcontroller, IOT Technology is proposed to improve quality of air. With the use of IOT technology enhances the process of monitoring various aspects of environment such as air quality monitoring issue proposed in this paper.

Here the using of MQ135 gas sensor gives the sense of different type of dangerous gas and arduino is the heart of this project which controls the entire process. Wi-Fi Module connects the whole process to internet and LCD is used for the visual Output.

The Automatic Air & Sound management system is a step forward to contribute a solution to the biggest threat. The air & sound monitoring system overcomes the problem of the highly-polluted areas which is a major issue



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