An IoT Based Intruder and Smoke Monitoring System

Abstract

Burglar and fire are the two dangerous life events. An IoT based intruder and smoke monitoring system is proposed to protect us from these events. The proposed system is a low cost and energy efficient alternative to the existing systems. It is an integrated system that can detect and monitor theft and fire. The system consists of hardware and software parts. The hardware parts have two separated subsystems, smoke and intruder subsystem. The smoke subsystem uses an ESP8266 Arduino board with a smoke sensor (MQ2) and a buzzer. The intruder subsystem uses an ESPIno32CAM board with an ultrasonic sensor (HC-SR04). The software parts consist of three applications that are web, android, and LINE application. Both subsystems share the same web, android, and LINE application. When a smoke is detected by the sensor, the alarm sounds. The smoke subsystem sends a notification to the web and LINE application and the gas concentration level is sent to MySQL database. When an intruder is detected by the sensor, the intruder subsystem captures his photo and sends it to the LINE application for notification. The system also has the ability to recognize faces so that when a homeowner is detected by the sensor, no notifications are displayed in LINE and web application. Web application shows an alert message when there is an intruder and a smoke. It also shows a graph of gas level values. Android application can turn on and off the device in the system.