| Abstrak/Abstract |
High electricity consumption increases utility expenses and contributes to the ongoing energy crisis, especially given the recent rise in the basic kWh tariff implemented by PLN. Optimizing electrical energy utilization is a critical measure to address these challenges. This study introduces an automated switching system that employs Passive Infrared (PIR) sensors to control lighting and fans based on the number of occupants in a room. The research methodology includes the system's design, prototype development, and performance testing. The system incorporates two PIR sensors strategically placed on opposite sides of the door to detect the movement of individuals entering and exiting the room. Experimental results indicate that the PIR sensors achieve 100?curacy in detecting movement, with a maximum detection angle of 400and a range of up to 7 m. The system's efficacy in reducing energy consumption is evident, with power usage recorded at 18.24 Watts over 3 hours, compared to 27.36 Watts without the system—an energy savings of up to 66%. The system's interface was developed using Processing, a Java-based software platform designed to visualize data from the PIR sensors. In this application, Processing is utilized to display real-time occupancy data, providing an intuitive representation of the number of individuals in the room |
