Development of Multi-Sensor Smart Power Outlet to Optimize Building Electrical Automation System

Abstract

Power outlets are electrical devices that are very important in electrical systems. This paper discusses the development of a smart power outlet prototype designed to increase its capabilities. The prototype design is not only to provide electrical power but also to measure, display and transmit the value of electric current and power used. Another ability is to monitor the condition of the room, such as light intensity, temperature, and humidity. This capability enhancement can be used to optimize the building electrical automation system. This prototype is based on ESP32 System-on-a Chip microcontroller which is equipped with several sensors and supporting input and output components. The sensors used are the hall effect sensor to measure the value of electric current; light, temperature, and humidity sensor to measure the condition of the room. Values obtained from all sensors will be displayed on a small OLED display and sent using a WiFi network to a local web server. Furthermore, these values can be accessed and displayed in real time using an Android OS application on a cell phone. In addition to the monitoring function, the application can also perform a control function to turn on or off the power outlet wirelessly. This prototype has been designed, build, and tested to determine the validity of its function. The results show that in general, this prototype can function properly in accordance with the design specified.