IoT Based System for Monitoring and Control of Gas Leaking

Fire accidents due to gas leakage is a serious issue since it frequently causes loss of life and bad injuries. Recent advances in sensing techniques, microcontroller and IoT technologies have allowed the development of various techniques in detection and prevention of fire accidents due to gas leakage. This paper present an IoT based system for monitoring and controlling Liquefied Petroleum Gas (LPG), which is commonly used as cooking gas at home, in order to prevent leakage. NodeMCU is used as the controller of this system where it processes the data of gas concentration and flame occurrence from MQ-2 sensors and Flame sensors respectively, and decides on the action to be taken by the system to activate prevention devices. Blynk application is used as the platform to notify the user when a gas leakage has occurred, monitor the concentration of gas and control the fire prevention devices installed along with the system. With this system, the user is able to monitor the concentration of the gas in ppm on their smartphone, receive notifications and remotely take necessary action when gas leakage occurs.