Leveraging Internet of Things and Blockchain for Improved Air Quality Monitoring Systems

The objective of this research is to develop an air quality monitoring system based on the Internet of Things (IoT) and blockchain technology. The application of the two technologies is considered a very suitable solution to provide air quality information in a fast and accurate manner and has resistance to data manipulation, reliable and trustworthy. The research includes problem identification, data collection, system analysis and design. In addition, implementation and testing of the system that has been developed. IoT is used as an input media that supports air data such as CO and CO<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf>. Data from IoT is acquired by the system, and stored in a blockchain network through smart contracts to maintain the integrity of the data. Data from the blockchain network then used as information that can be utilized by users to determine the condition of air quality in the environment. The results showed that the air quality monitoring system that integrates IoT and blockchain technology was successfully developed. System performance testing based on success ratio and failure variables send rate, latency, and throughput shows that the developed system can produce a good performance to handle large IoT data and can maintain the integrity of IoT data in the blockchain network. The contribution resulting from this research shows that a system that integrates IoT and blockchain technology can increase and improve the quality and performance of the air quality monitoring system.