LoRa Based Wireless Sensor Network for Environmental Monitoring

As Science and technology evolve, the environment is getting affected daily. These cause major environmental issues like Global Warming, Ozone layer depletion, Natural resource depletion, etc. These are measured and regulated by local bodies. The data given by the local bodies are average values for a large area, those data might be inaccurate for a small sector or isolated zone. However, there are few techniques such as WSN (Wireless Sensor Networks), IoT (Internet of things) which measures and updates real-time data to a cloud server to overcome the trouble. But, in some cases, internet or even WiFi connectivity may be unavailable and sometimes it is necessary to stay away from IoT insecurities and vulnerabilities. To solve the above-mentioned issue by creating a local server with an alternate wireless technology such as LoRa, NB-IoT is one of the ways. This paper explains a method where LoRa is used as a transmission medium that ensures low interference and provides long-range communication along with a private server. Various nodes have different sensors embedded along with a microcontroller that samples and transfers the data to the gateway. The gateway further processes the data and sends it to a web server for storing it in the database. The raw data thus stored is fetched and processed for easy visualization in a private website.