Dispositivo IoT de micromedição integrado com cloud computing para monitoramento do consumo de água.

Abstract

Managing water resources efficiently and sustainably is a challenge. In this context, the Internet of Things and cloud computing emerge as low-cost and highly scalable technologies, developing smart metering of water consumption and the possibility of remote and real-time monitoring. The objective of this work was to develop a low-cost IoT smart water meter for measuring water consumption in micromeasurement supply networks, using cloud computing to store and process data, in addition to detecting and alerting possible leaks. This developed meter was calibrated and validated in controlled and uncontrolled scenarios. The data obtained with the association of the IoT Hydrometer and cloud computing served as a basis for the study of the consumption pattern with the automation of the micrometer. To receive, store and process the data, the IoT platform ThingSpeak was used. This platform receives data from the smart water meter every 2 minutes and has algorithms that alert about device operation and possible leaks. In a controlled environment, the IoT smart water meter results showed a maximum error of 0.89% for flow rates between 1 to 20 L/min and above 50 L/min. For field validation, the values measured in the smart meter were compared with the readings of a conventional hydrometer installed in series, but with a level difference of 1.80 m between them. In two months of comparison, there was a difference of 8.9% between the water meters, possibly caused by the variation in pressure between them. The final cost of the IoT Hydrometer developed in this research was R$ 92.70 and the equipment was calibrated for flow rates between 1.32 and 55 L/min. Finally, with this system, it was possible to analyze the building consumption pattern studied, identifying normal periods of consumption, lack of water and a leak whose calculated waste was more than 7 thousand liters of water. It is concluded that the system presented a positive response to the proposed objective and promising results.