© December 2021| IJIRT | Volume 8 Issue 7 | ISSN: 2349-6002 IJIRT 153536 INTERNATIONAL JOURNAL OF INNOVATIVE RESEARCH IN TECHNOLOGY 481 LPG Gas Leakage Monitoring System Detection and Alert System Using IOT K. Muni Sankar 1 , Dr. B.Booba 2 1 Research Scholar, Vel’s University, Chennai 2 Professor, Dept. of CSE., VISTAS, Vel’s University, Chennai Abstract - At present fuels, gases, and other substances are widely used in our daily lives, such as in households, industries, and so on. However, if not used properly, it can cause serious problems. In the past, it was the sole cause of many accidents. The goal of this project is to detect a gas leak, prevent an accident, and block gas leaks in high-risk areas. This includes the MQ6 gas sensor, which is used to detect gas leaks in the home and industry and is also suitable for detecting LPG, i-butane, Hydrogen, Methane, Smoke, and Alcohol, among other things. However, it does not specify the precise gas concentration. It only depicts the trend of gas concentration within a reasonable error range. This device takes precautions on its own. And even turns off the main power supply for a short period of time to avoid accidents. Include the WiFi module as well, which will take immediate action by sending an alert SMS. Index Terms - Arduino UNO, MQ6 gas sensor, Buzzer, Exhaust Fan, ESP8266 WiFI Module. I.INTRODUCTION There are numerous devices available to prevent gas leakage accidents. As an example, smoke detectors, fire extinguishers, and so on. These devices can only prevent fire exposure; they cannot protect people from injury. In the past, accidents such as the Bhopal gas tragedy, which occurred in December 1984, killed over 3,000 people when methyl isocyanate leaked out. Andhra Pradesh's Nagaram The pipe became rusted in June 2014, resulting in a gas leak, a blast at the Gas Authority of India Limited's plant, the death of 29 people, and other incidents. So, in order to protect people from this potentially lethal disaster, technologies must be upgraded. If the gas outflow is not detected early, it can cause significant damage. MQ6 sensor is a device that not only detects but also prevents accidents by turning off the main power supply. It has a high sensitivity as well as a quick response time. A sensitive SnO2 filament is used in this detector. In the presence of clean air, this filament reduces electrical conductivity. When a combustible gas, such as LPG, is ignited, the conductivity of the filament increases. This sensor can easily communicate with Arduino. So it's an Arduino-based gas leak detection system, in which the device can be connected to WIFI via the ESP8266 WiFi module, and the maximum and minimum variables are set as a result. Following detection, an alert SMS will be sent to the owner. II. LITERATURE REVIEW Many authors have come up with ideas to prevent and detect gas leakage in the past, such as, [1] The authors Somashekhar Malipatil, Shilpa, and Jayasudha proposed GPS-based LPG Gas Measurement Detection. They used Arduino, LPG, GPS, a MQ6 sensor, a load cell, and a signal amplifier. The level of the gas cylinder is monitored by this system. If the threshold level falls below 2kgs, an alert SMS is sent to the user, and the leakage level is detected. [2] Siddharth, Rameswari, Keerthana Gayathri, and Kavin Sanjaya proposed Smart gas assistant for an ideal kitchen. They used Arudino, Wi-Fi, GSM Module, Internet of Things, Online Tool, and Mobile Application in this paper. This system determines the amount of LPG in the cylinder. It automatically books the cylinder based on the registration number. In addition, a message alerting the customer to the volume of gas available in the cylinder is sent. [3] Anusha, Nagesh, Venkata Sai, Srikanth, and Rupalin Nanda created an IoT-based LPG leak detection and booking system with SMS alerts for customers. They used a GSM modem, a MQ2 gas sensor, a load cell, and an AWS server in this paper. This system detects fuel leaks automatically and sends an SMS alert to the