Detecting LPG Leakage and Automatic Turn off using Arduino Connected with PIR Sensor

Abstract

In today’s world, every home is provided with separate LPG connection for cooking.Nowadays, due to the advancement in technology human beings are getting upgraded day by day. In today’s world, every home is provided with separate LPG connection for cooking. It increases the efficiency and decreases the time consumed. Even though it is much better, there are certain critical conditions are to be considered whenleakage occurs. While operating with LPG, risks are considered and a reliable technique is to be adapted in the kitchen.Many techniques are available to provide constant monitoring and control of gas leakage in residencies. This paper describes one such method of utilizing LPG in home safely andautomatic turning off of the valves at the time of leakage. In this paper, I have used Arduino UNO to carry out the desired task. Arduino is connected to gas sensor (MQ-2) and temperature sensor (LM-35). Gas sensor is used to detect leakage of gas and temperature sensor is used to detecttemperature constantly. In addition to that, I have used a PIR sensor for detecting the presence of human in the kitchen. If no human is detected over a period of time, an alarm is on and automatically the valve of the LPG cylinder goes off.