This work presents the implementation of a wireless sensor network for environmental monitoring
in smart cities. To do so, initially, the premises that define a smart city and the technological
tools that enable remote communication between machines are conceptualized. Besides that, the
microcontroller used to perform the monitoring, the ESP32, and the IT infrastructure needed to
keep the system running are presented. This infrastructure, in turn, has tools like StrongSwan for
VPN, Bacula for backup, IPTables as firewall, Docker for deploying and GitLab as repository
manager and runner for the pipelines CI/CD. Then, through the definition of clean architecture,
it is explained how it is possible to build a flexible system, even at the hardware level. As result,
the work shows the applications and APIs made in .NET 5 to access the monitoring data stored
in a SQL Server 2019. Subsequently, the tests are detailed, which met the expectations, and, in
addition, topics about efficiency, scalability, reliability, resilience and security of the presented
prototype are discussed. Finally, there is also a section dedicated to suggesting future work.
|
