International Journal of Engineering and Technology

Power line communication is one of the emergent technologies used in a cost effective and high speed communications of digital and voice data. It has been used successfully in many real time applications. The paper proposes one such application for automating an educational institution by replacing manual notice boards or circulars by digital notice boards. With a centralized database, frequent updating is easily possible. The system uses existing power lines to send the data to a specific node or to broadcast to various power line nodes. The address is assigned to each receiver and it response based on their appropriate commands. The information to be displayed is received from the main server and at reception each node checks the password and displays it. The design consists of a PC, PLC modem, controller kit and an LCD. The proposed model with a wired communication is better than the wireless communication system.