We are a team of three French students from Orléans University, and one from Østfold University College in Fredrikstad on a project based on the Internet of Things.
Our project is about wirelessly sending light and temperature data from sensors distributed around a solar panels field, to a receiver located at its center a few hundred meters away. The data is then sent by ethernet on a storage server, and it can be consulted through a website.
Since this setting doesn’t require much bit rate, the best wireless solution was to use one of the newly developed Low Power Wide Area Network device: LoRaWAN
LoRa is a technology patented by Semtech which utilizes Chirp Spread Spectrum to send data. Its robustness against interferences allows for long-range communications while having a low power consumption, making it the ideal solution for low bit rates for off-grid transmitters. The goal of our project is to demonstrate LoRaWAN usefulness and explain its inner workings.
Here you can learn more about LoRa