PLC Based Energy-Efficient Home Automation System with Smart Task Scheduling

In this paper, we design a PLC based energy-efficient home automation system with smart task scheduling. The system is automatically controlled, energy-efficient and highly scalable to smart home with basic features that save energy and the residents comfort. This system consists of home appliances such as garden light, outside light, pump motor, garden motor and room heater which is controlled using PLC and relays with our predefined schedule. A Logo PLC system (Model-0AB3) is used as a central controller. Ladder diagram is used to design the main program for PLC. This PLC is capable to storing instructions, sequencing, timing and processing. We have used wired x10 technology which is a protocol for communication among electronic devices for home automation (domestics). It primarily uses power line wiring for signaling and control. As a result, we make a schedule based on a whole day to control the loads which depend on real time as user selected time. Finally the operation of the system has been successful as we expected.