Biogas monitoring system using DS18B20 temperature sensor and MQTT protocol

Abstract

Nonrenewable energy resources such as coal, petroleum, and natural gas are becoming extinct and thus there is a need for renewable energy resources in the long run. One of the most important renewable energy resources is biogas. Biogas is the gas produced after anaerobic digestion of organic matter by micro-organisms. Biogas mainly contains methane (about 60%). There are a number of factors affecting the production of biogas and one of them is temperature. The temperature of the biogas plant should be held constant with variation <1 °C and within the range 30–55 °C. Thus, there is a need of a proper monitoring system for the biogas plant. In this study, we try to develop a monitoring system for the biogas plant using temperature sensor DS18B20, MQTT protocol, Mosquitto broker, and Raspberry Pi. A web-based system, where the temperature sensor values will be uploaded periodically and an end user will monitor the temperature of biogas plant remotely, is proposed.