Remote datalogging of solar UV irradiation using open-source ESP32 platform and MQTT protocol

Abstract

Recent data loggers are computer peripheral devices or stand-alone smart instruments which can collect local databases and are able to transfer data to remote servers. Therefore, an appropriate communication protocol is required to facilitate the integration to existing computer infrastructure. This study proposes the utilization of MQTT as a communication protocol between scientific instrumentation: UV sensors, open-source data processing controllers and SoC computers. Data acquisition was done in real-time, stored in InfluxDB database and graphically presented by Grafana visualization tool.