(IJACSA) International Journal of Advanced Computer Science and Applications, Vol. 9, No. 11, 2018 65 | Page www.ijacsa.thesai.org Wireless Internet of Things-Based Air Quality Device for Smart Pollution Monitoring Nurul Azma Zakaria 1 , Zaheera Zainal Abidin 2 , Norharyati Harum 3 Center for Advanced Computing Technology Universiti Teknikal Malaysia Melaka Durian Tunggal, Melaka, Malaysia Low Chen Hau 4 Faculty of Information and Communication Technology Universiti Teknikal Malaysia Melaka Durian Tunggal, Melaka, Malaysia Nabeel Salih Ali 5 Information Technology Research and Development Center University of Kufa Najaf, Iraq Fairul Azni Jafar 6 Advanced Manufacturing Center Universiti Teknikal Malaysia Melaka Durian Tunggal, Melaka, Malaysia Abstract—Living in a healthy environment is a need for every human being whether indoor or outdoor. However, pollutions occur everywhere and most people are merely mindful of the importance of having clean outdoor air to breathe and are not concerned about the indoor air quality. Indoor air quality refers to the quality within the building, and relates to the health and comfort of the building occupants. Dangerous particles exist in the outside air, pollute the indoor environment and produce harmful conditions as the polluted air travels into the house or building through windows or doors. Therefore, a wireless Internet of Things-based air quality device is developed to monitor the air quality in the indoor environment. The proposed system integrates a low-cost air quality sensor, temperature and humidity sensors, a single-board computer (Raspberry Pi 2 microprocessor) and cloud storage. The system provides real- time air quality reading, transfers the data through a wireless network to the Internet and displays the data in dedicated webpage. Furthermore, it stores records in cloud storage and sends e-mail notification message to the user when unhealthy condition is met. The study has a significant impact on promoting affordable and portable smart pollution monitoring system as the development of the device utilizing low-cost and off-the-shelf components. Keywords—Internet of things (IoT); single-board computer; cloud storage; smart pollution monitoring I. INTRODUCTION Most people are concerned about their health, whether the food is safe to eat or the water is clean to drink. The most important thing in healthy life is the air quality which most people pay little attention to the environment. The air pollution is frequently happening in Malaysia due to many sources such as open-fire, gas combustion from vehicles, and factories waste. These events release harmful gases and one of the examples is nitrogen oxide (NO X ) which is the primary component of acid rain formation. Harmful gases affect our wellness and can induce lung cancer or chronic heart disease even though in indoor environments. This is because the polluted outdoor air come into the indoor environment through windows and doors. Thus, a system which detects the air pollution is necessary so that people are able to monitor the air quality and perform the necessary action to keep the harmful gases away. At present the sensor technology is improving as compared to previously. A number of researchers work with sensors to monitor the environment and resolve environmental issues. For example, a work by Kaur et al. [1] recognized environmental parameters such as the temperature, relative humidity, carbon monoxide (CO), carbon dioxide (CO 2 ) and luminosity by using SHT10, MQ7, T6615, LDR respectively. Likewise, [2] used MQ-135 and DHT-11 sensors to detect the temperature, humidity, CO, CO 2 , smoke and alcohol. The DHT-11 sensor consists of Negative Temperature Coefficient (NTC) component to measure temperature and resistive type component to measure humidity. Ibrahim et al. [3] proposed an environmental monitoring device using a single board computer which allows remote access and control of a platform with Python programming language. The system measures concentrations of carbon monoxide and detects earthquakes through an assembled seismic sensor. Furthermore, Devarakonda [4] implemented a vehicular- based mobile access for measuring fine-grained air quality in real-time. However, this work used expensive equipment at specified locations or dedicated mobile equipment and laboratories to perform the measurement of the pollution and it has portability issue. Another work by [5] depended on the base station to function. The value from every sensor node is sent after a request is received from the base station. It uses ultra-low power sensor based microcontroller and suitable for business sector. The drawback of this system is every sensor node needs to be ready and power up at all times to achieve total measurement, although the data are only required for a short period. This incurs high usage of power and it is costly. An option of a low power consumption device will benefit the research. Moreover, [6] proposed a scheme that comprises of a base station associated with the network and a few self- governing hubs furnished with various sensors to measure temperature, stickiness, light and air quality. A system with LabVIEW is used in order to administer the operation and