The Real Time Hardware Design and simulation of moving message Display System Integrated with PLCC Modem

摘要

This paper serves as a general and technical orientation on the one of application of "Power line Carrier (PLC) Communication Systems" with scrolling message on LED/LCD with keyboard facility in real time with the presentation of a widespread and detailed analysis on the standards, characteristics, technologies, products and development associated and currently being deployed in the PLC communication systems. Since the developments and research on the subject had been relatively new in India and information scattered, the lack of collective information had been the primary Initiative behind this research. Power Line Carrier (PLC) is still widely used to provide real-time communications for protection of high voltage transmission lines. This PLCC module provides bi-directional half-duplex communication over the mains of any voltage up to (220-250)V AC and for frequency 50 Hz or 60 Hz. Usually modules is in receiving mode all the time attending to incoming communication on the power line. This application gives serial data to transmit on its RX-IN pin, it switches over to transmit and transmits the data through power line. Once transmit process is complete it switches back to receive mode. During transmission of data by Red LED indicates user that data is transmitting. At the receiving end receipt data indicated by Green LED which is on TX out pin itself. Data communication of the modules is clear to user’s data terminals and protocol self-determining; as a result, multiple units can be connected to the mains without affecting the operation of the others. In this we can connect the PLC modem to the Atmega 16 controller and then program it and simulated with ISP connector and then at last connect PLC system to the AC power plug.