Design of Home Automation System using Dual-Tone Multi-Frequency Technique

Abstract

With the growth of modern wireless technology and the advancement in the field of automation, a cost-effective home automation system to operate remotely located electrical appliances has been  designed. The several technologies to design an automation system are identified and studied in the  literature. Dual-tone multi-frequency (DTMF) technology has been identified to develop an
automation system that can depict the picture of automation. The technology is identified to help  elderly or physically challenged individuals to control the home appliances remotely. Thus, the  DTMF automation technology has been implemented in a system. The study also focuses on saving  energy by remotely switching the appliances on the state or off state as required. Android-based  applications (Apps) has been implemented for simplicity. The app provides a convenient way to  switch the appliances and lights on and off as required. This data from the app is further decoded and  stored in the flip-flop and is used to trigger the relay through relay drivers. Based on the signal or the  touch tones, the appliances are controlled. The system thus designed provides a wide range of coverage as it can be controlled remotely from any corner of the world with the availability of a GSM network.