Design and Implementation of an Embedded System for Monitoring and Controlling Energy Consumption in Smart Homes

Abstract

In this thesis, an embedded system for energy monitoring and controlling appliances in smart homes is designed and implemented with the ESP8266 NodeMCU microcontroller and the Blynk IoT mobile application. The integration of smart technology into daily routines alongside the increased demand for energy has made real-time remote monitoring and control of electrical appliances essential. The system described makes it possible for users to monitor power consumption, control appliances, and receive feedback on the current and temperature values from their smartphones. The system allows users to control household appliances, view their status, and obtain real-time feedback on parameters such as power consumption, current measurements, and temperature from a smartphone. The system’s key elements include the current measuring ACS712 current sensor and the DHT11 temperature and humidity sensor, and LED indicators signifying the various appliances at home. The Blynk application functions as a real-time dashboard and allows for control through switch widgets, threshold sliders, and with command inputs such as ON, OFF, and STOP. Current and power measurements were accurate and timely with slight lag during tests with simulative appliances. The system successfully executed the cutoff set by the users, responding to the preset limits thus enhancing safety and energy efficiency. This research provides an economical, expandable, and easy-to-use solution for managing smart home energy systems.