Water Usage and Electrical Power Consumption Monitoring System Based on IoT
Keywords:
Internet of Things, flow meter, PZEM-004T, ESP32, Firebase Realtime Database, water and electricity monitoringAbstract
This research aims to design and evaluate the performance of an Internet of Things (IoT)-based monitoring system for water usage and electrical power consumption, integrating a YF-S201 flow meter sensor to measure water volume and a PZEM-004T V3.0 sensor to measure electrical parameters within a single integrated platform. The system was built using an ESP32 microcontroller as the main control unit, a solenoid valve controlled through a relay as the actuator for automatic water filling, Firebase Realtime Database for real-time data storage, and a Kodular-based Android application as the user interface. The research employed a Research and Development (R&D) method, in which the system was tested directly under real operational conditions. Test results show that the system was able to fill water according to target volumes (5L, 15L, and 19L) with average error percentages of 1.88%, 1.41%, and 5.12% respectively, resulting in an average system accuracy of 97.1%. The PZEM-004T sensor demonstrated high accuracy in voltage readings (average error -0.285%) but lower accuracy in current readings (average error -6.44%). The system also successfully calculated estimated electricity costs based on the R-1/1300VA electricity tariff.
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