Sahana Shekhar
Independent Researcher
India
Abstract
This paper presents the design, implementation, and evaluation of a GSM-based home automation system enabling remote control of household appliances via standard mobile phones. The system architecture integrates a GSM modem with a microcontroller to receive SMS commands, interpret them, and actuate relays connected to appliances. The methodology encompasses system modeling, hardware interfacing, command parsing algorithms, and safety interlocks. Five research objectives guide the study: (1) to develop a reliable SMS-based command interface, (2) to minimize command-to-action latency, (3) to ensure electrical safety through hardware protection circuits, (4) to evaluate system reliability under varying signal strengths, and (5) to assess user satisfaction via controlled simulation. A statistical analysis examines command success rates, response times, and error occurrences under ten test conditions (see Table 1). Simulation research validates system behavior under ideal and stressed conditions, demonstrating an average command success rate of 98.5 % and mean latency of 3.2 s. The results confirm that GSM-based control is viable for basic home automation tasks within the technological constraints up to 2015. The paper concludes with recommendations for future enhancements, including integration with wired backup communication and security encryption.
Keywords
GSM, Home Automation, SMS Control, Microcontroller, Remote Appliance Control
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