IoT based Smart Security System using PIR and Microwave Sensors

The Internet of Things (IoT) helps to create safe cities, businesses, and homes by allowing both public and private organizations to remotely and securely monitor facilities and public spaces in real-time with smart surveillance and security solutions. In this paper, an economical, secure, fault-tolerant and easy to install/use surveillance system has been proposed. A couple of PIR and microwave sensors are used to detect heat signatures. These sensor nodes are physically connected using Arduino Mega Board. If intrusion is detected, the Arduino Mega Board generates an alert notification and sends it to the 3G/GPRS Shield (SIM5215A) module. The first connection is made with the online server using 3G/GPRS while the second connection is made with the user's cell phone using GSM. The proposed system has been validated on a variety of test cases and produced optimal results.