Monitoring and control of IoT-based building electrical load limit

Abstract

The Demand for electrical energy continues to increase. However, excessive electrical energy consumption can lead to tripped circuits and escalated costs. We developed a prioritised sockets system to avoid electrical trips and excessive power consumption. The PZEM-004T sensor in the master circuit can measure electrical power with deficient error, and the ACS712 sensor in the slave circuit can measure electrical current with an accuracy of 99.85%, making these sensors suitable for monitoring. Additionally, the non-priority sockets can interrupt the power flow when the power exceeds the limit while the priority socket remains active. The mobile application can display real-time historical data and control the switching of prioritised sockets. This system consists of 3 subsystems: the master circuit, the slave circuit, and the mobile application. The priority socket’s current cannot be interrupted. In contrast, the non-priority system can be interrupted when the electrical power load reaches 375 Watts. The mobile application controls the switching of prioritised sockets and monitors the incoming electrical power loads. They connected this system to the internet for proper functioning.