Remote control of room lights and coolers automation system SMS based

Abstract

This paper attempts to design a system based on the sensors on the market, enabling intelligent automatic control the electronic devices in our homes. For this purpose, the authors created an automation system for room lights and coolers that can be remotely controlled. The system detects human movements with passive infrared receiver (PIR) sensors, measures the room temperature by LM35 sensors, and captures the light intensity of the room by light dependent resistor (LDR) sensors. The data of the three sensors are processed using ATMega2569 microcontroller. The key components of the system were programmed in C language. The measured results of the proposed system were compared with those of standard tools. The comparison shows no significant difference between the two sets of results, with a confidence level of 95 %. Therefore, our system is of great help to those who often forget to turn off electronic devices in their rooms.