Home automation and security system using IoT

Abstract

It is needless to say the importance of automation and security systems in the present era. In this paper we propose simple solutions for automation of electrical appliances and home security. We propose to control automatic turn on and turn off of electrical appliances like electric bulb, Air conditioner, electric fan etc.; with respect to the human motion detection rather than using manual switch on/off system. Another solution is controlling the Air conditioner temperature depending on the room temperature. We propose another function to provide security. In all these applications, the Arduino Uno processing unit is used, along with 3 different sensors. To detect the human presence PIR (Passive Infrared) Sensor is used, temperature sensor (LM35) is used to detect the room temperature and Ultrasonic (HC-SR04) sensor is used to detect the presence of objects. If there is any human movement it is detected by the PIR Sensor and the lights will turn on. If the room temperature is above the given temperature set, it is detected by the temperature sensor and the Air conditioner will turn on directly. If there is any object that is detected by the ultrasonic sensor it is detected by the sensor and a buzzer is set that starts emitting sound.