DTMF and GSM Based Home Automation System
Tathagata Biswas, Arghadeep Saha, Debraj Saha
Student member, IEEE, Department of Electrical Engineering, Meghnad Saha Institute of Technology, Kolkata 700150
This research work investigates the potential of household appliance control which is the aim of the Home Automation Systems in near future. The analysis and implementation of the home automation technology using Global System for Mobile Communication (GSM) modem to control domestic appliances such as light, conditional system, garden system and security system via Dual Tone Multi Frequency (DTMF) signal detection and Short Message Service (SMS) text messages presented in this paper. The proposed research work is focused on functionality of the GSM protocol, which allows the user to control the target system away from residential using the frequency bandwidths. The concept of serial communication, decoding DTMF signals and AT-commands has been applied towards development of the smart GSM-based home automation system. Home owners will be able to receive feedback status of any home appliances under control whether switched on or off remotely from their mobile phones. Atmel ATMEGA microcontroller interfaced with a GSM modem provides the smart and low cost automated house system with the desired baud rate of 9600 bps. The proposed prototype of GSM based home automation system was implemented and tested with maximum of four loads and shows the accuracy of ≥98%.
Global System for Mobile Communication (GSM); subscriber Identity Module (SIM); short messaging service (SMS); home automation; dual tone multi frequency (DTMF); solid state devices (SSD)