WSN Based Air Pollution Monitoring System

Table of Contents

1. INTRODUCTION

2. System Overview

2.1 Proposed System

2.2 Hardware Architecture

2.2.1. ATMEGA16 microcontroller

2.2.2. Sensors Array

2.2.3. ZigBee Modules

2.3.4. Central Server

3. ZigBee Standard

4. AIR Quality

4.1 Carbon Dioxide (CO2)

4.2 Sulphur Dioxide (SO2)

4.3 Nitrogen Dioxide (NO2)

4.4 Air-Quality-Index

5. Conclusion

Research Objectives and Focus Areas

The primary objective of this work is to design and implement a cost-effective, low-power Wireless Sensor Network (WSN) system for real-time air pollution monitoring, enabling the government to categorize environmental pollutant levels efficiently.

• Development of a distributed sensor network architecture for air quality data collection.
• Implementation of energy-efficient data aggregation and transmission protocols using ZigBee technology.
• Integration of specialized gas sensors (CO2, NO2, SO2) for environmental monitoring.
• Creation of an automated Air Quality Index (AQI) reporting system for real-time data visualization.

Excerpt from the Book

Summary of Chapters

1. INTRODUCTION: Discusses the significance of air pollution on human health and the limitations of current passive or manual monitoring systems.

2. System Overview: Details the proposed WSN architecture, hardware components including ATMEGA16 microcontrollers, sensor arrays, and ZigBee communication modules.

3. ZigBee Standard: Explains the IEEE 802.15.4 based wireless networking technology used for low-power, short-range data transmission in the system.

4. AIR Quality: Provides an overview of atmospheric pollutants and the methodology for calculating the Air Quality Index (AQI) based on specific gas concentrations.

5. Conclusion: Summarizes the successful implementation of the WSN system and its ability to provide actionable data to authorities through real-time monitoring.

Keywords

Air Pollution, AtMega16 microcontroller, MG811 Sensor, MQ6 Sensor, MQ135 Sensor, Real Time, ZigBee, WSN, Air Quality Index, Gas Monitoring, Wireless Sensor Network, Environmental Protection, Data Aggregation.

Frequently Asked Questions

What is the primary focus of this research paper?

The paper focuses on designing a cost-effective and low-power Wireless Sensor Network (WSN) to perform real-time monitoring of atmospheric pollutants in urban environments.

What are the main thematic fields covered in the work?

The core themes include wireless sensor technology, air quality management, gas sensing hardware, and communication protocols based on the IEEE 802.15.4 standard.

What is the central research goal?

The goal is to develop a robust system capable of providing continuous, real-time data on hazardous gases (CO2, NO2, SO2) to help government authorities categorize pollution levels.

Which scientific methodology is employed?

The authors use an engineering approach involving system design, sensor hardware integration, and the deployment of ZigBee modules to establish a mesh-capable communication network.

What content is covered in the main body of the paper?

The main body details the hardware architecture, the selection of gas sensors, the logic behind the Air Quality Index (AQI) formula, and the configuration of the network stack.

Which keywords define this work?

Key terms include WSN, ZigBee, Air Quality Index (AQI), ATMEGA16, and real-time gas monitoring.

How is the Air Quality Index calculated by the system?

The AQI is derived by dividing the measured raw pollutant level by the established pollutant standard for a specific region and multiplying the result by 100.

Why are ZigBee modules preferred over GSM/GPRS for this system?

ZigBee modules are chosen because they offer lower cost, lower power consumption, and simpler installation and maintenance compared to the more complex GSM or GPRS networks.