Security based Domotics

Abstract This paper provides a design and implementation of an automated control system of household appliances. Routine functions can be conveniently performed thereby saving time, energy and effort viz. switching of appliances. The proposed system can be divided into three modules- sensing, decision making, and implementation. The sensing system provides the microcontroller with data regarding external environment. The second module takes its decision based on this data. The final module implements this decision through a relay. The logic was implemented in Atmel ATmega 8 to achieve proposed aim. Installed sensors were found to be quite efficient in an ordinary small scale system. Modifications can be made to increase effectiveness by using PIR or Ultrasonic Sensors. Simple circuitry with cheap components used makes it a feasible option in home based automation.