IoT-Based Home Automation System with Covid-19 Detector

As the advancement in technology continues to increase, systems also need to be upgraded to meet new trends and solve developing problems. Existing systems of home automation generally focus on energy management, security, and comfort. These smart homes would be more efficient if they can also perform health diagnoses. In this paper, a cost-effective IoT-based home automation system that performs the function of energy conservation, smart security, and disease detection is designed. The system uses the NodeMCU ESP8266 IoT board with its in-built Wi-Fi shield, eliminating the need to acquire a separate Wi-Fi module. The NodeMCU is interfaced with the user’s android device where the connected loads on the relay modules are controlled thus enabling the system to control home appliances via an android application. The ESP8266 is also connected to a PIR sensor that checks for motion and triggers an alarm when motion is detected and connected to a contactless temperature sensor that measures the body temperature of anyone and sends the readings to the display while also triggering an alarm if the temperature is above normal indicating the sign of illness or diseases such as coronavirus, high fever, influenza. This paper presents a design of a simple system that not only assists the user to control his home appliances, conserve energy, and improve home security but also helps to protect the user from allowing covid-19-infected persons into their home.