air pollution detector
Various researches and variations has done before different pollution detection tools are already in the market they are Pollution detector using Arduino and Arduino microcontroller have formed already initially efforts for monitoring indoor air quality using sensors and then wirelessly monitoring a
2025-06-28 16:30:11 - Adil Khan
air pollution detector
Project Area of Specialization Internet of ThingsProject SummaryVarious researches and variations has done before different pollution detection tools are already in the market they are Pollution detector using Arduino and Arduino microcontroller have formed already initially efforts for monitoring indoor air quality using sensors and then wirelessly monitoring accordingly. Then further transferred to Wi-Fi controlling with CO2 only later on it modified.
A sensor consists of a microcontroller, gas sensors, mobile unit, a temporary memory buffer and a web server with internet connectivity which collects data from different locations and then connected it with Arduino to simulate the data which is an open source.
Internationally a lot of work has done on the subject but in Pakistan there is still a shortage of pollution monitoring systems on Node MCU based system associated with CO sensor, CO2 sensor, Temperature and Humidity sensor and dust sensor and a monitoring system. It will be associated with an application consisting of insights, monitoring the air pollution levels with an alarm system.
Project Objectives- Developing an air pollution sensor due to ever growing air pollution.
- Sensor will be implemented on Node MCU.
- This Project will be able to detect Carbon dioxide, Nitrogen oxide, smoke and plastic fumes.
- Developing the alarming and controlling (exhaust) system.
In today’s world many pollution monitoring systems are designed by considering different environmental parameters. Project system model is presented in figure 1 uses Zigbee based wireless sensor networks to monitor physical and environmental conditions with thousands of application in different fields. The sensor nodes directly communicated with the moving nodes deployed on the object of interest which avoided the use of complex routing algorithm but local computations are very minimal. RIFD is used for retrieving and storing the data and also used to track and label items in manufactories. It has main components reader and tags. Tag has memory which stores additional data such as manufacturer, type of product and environmental factor such humidity and temperature etc. It also has distinctive identification (ID) .A server is an existence of a computer program which is used to accept then reply to another program request called as a client. To manage network resources Servers are used. In the servers, the services or information are provided through the Internet those are connected through LAN and made available for users via smart phones, web browser or other web browser devices to make the system more intelligent, adaptable and efficient.
Benefits of the Project- Clean Air.
- Air Pollution Detection and Intimation.
Emissions of air pollutants continue to play an important role in a number of air quality issues. In 2019, about 70 million tons of pollution was emitted in the atmosphere in the world. Due to extensive air pollution, people are suffering on everyday basis. It is estimated that 90% of the population is affected by Air Pollution. It is recorded that 7 million people die of air pollution every year they contract diseases like lung diseases, cough, Tuberculosis, Chronic respiratory diseases. [5]
With an ever-increasing number of industrial units and transport vehicles, the problem of air and pollution is becoming severe by each passing day. Therefore, it has now become extremely important to keep the air pollution levels under check, especially in urban centers. To achieve this goal, some type of air and sound pollution monitoring system needs to be developed.
Back in time detection of pollution was a difficult task but nowadays with the help of IOT based technologies it is easy to detect and find solution of pollution safety in confined spaces at least.
In 2018 Pakistan was of the most polluted countries in the world Karachi and ten are among top ten most polluted crisis of the world.
- We will get to know the places where there is more pollution and then we can design strategies to control pollution.
- Air Pollution Detector data helps us determine if an area is meeting the air quality standards devised by CPCB, WHO or OSHA.
- The data collected from air pollution monitoring helps us assess impacts caused by poor air quality on public health.
- Selection of equipments/components: We will be makin use of Node MCU, Sensor MQ135, MHZ14 and MQ2. We wil also be using an exhaust in the procedure. We are using Node MCU to monitor and/or control remotely using WiFi as it is the best low cost option available in the market. We will be using MQ135 sensor. The gas sensitive material used in the MQ135 gas sensor is tin dioxide (SnO2) with lower conductivity in clean air. When there is a polluting gas in the environment where the sensor is located, the conductivity of the sensor increases as the concentration of the polluting gas in the air increases. The change in conductivity can be converted to an output signal corresponding to the gas concentration using a simple circuit. The MQ135 gas sensor is highly sensitive to ammonia, sulfides, and benzene vapors, and is ideal for monitoring smoke and other harmful gases. This sensor detects a wide range of harmful gases and is a low-cost sensor for a wide range of applications.
Characteristics:
- Good sensitivity to harmful gases over a wide range of concentrations
- High sensitivity to ammonia, sulfide, benzene, etc.
- Long life, low cost
- Simple drive circuit
MQ2: It is an electronic gas sensor used for sensing the concentration of gases in the air such as LPG, propane, methane, hydrogen, alcohol, smoke and carbon monoxide. It is also known as chemiresistor.
MHZ14: Infrared sesnor helps in detecting CO2 gas.
- Simulations of Algorithms: We will be learning C++ and other programming language(s) to work smoothly with nodemcu. We will also be developing an app to be attcahed with our hardware.
- Circuitry Design: We will then be developing the entire circuit to create the air pollution detector hardware.
- Software and Hardware Compatibilty: At this stage we will eventually connect our hardware and software together making it compatible with each other.
- Testing: After connceting hardware with software the next step is going to be testing different scenarios if the project is working fine under different circumstances.
- Completion: Finally the project will get completed and we will come up with a report.
| Item Name | Type | No. of Units | Per Unit Cost (in Rs) | Total (in Rs) |
|---|---|---|---|---|
| Total in (Rs) | 2270 | |||
| NodeMCU | Equipment | 1 | 550 | 550 |
| Breadboard | Miscellaneous | 1 | 150 | 150 |
| Soldering Iron + Wire | Miscellaneous | 1 | 420 | 420 |
| PC Fan | Miscellaneous | 1 | 150 | 150 |
| Vero board | Miscellaneous | 1 | 100 | 100 |
| Jumper Wires | Miscellaneous | 1 | 40 | 40 |
| Buzzer | Miscellaneous | 1 | 20 | 20 |
| MQ135 | Equipment | 1 | 320 | 320 |
| Potentiometer | Equipment | 1 | 70 | 70 |
| MQ2 | Equipment | 1 | 300 | 300 |
| MHZ14 | Equipment | 1 | 150 | 150 |