Original Article International Journal of Engineering Science Technologies ISSN (Online): 2456-8651 May-June 2021 5(3), 1–8 Received 9 April 2021 Accepted 22 April 2021 Published 11 May 2021 Corresponding Author Bhavithra S, bhavithra1999@gmai l.com DOI 10.29121/ IJOEST.v5.i3.2021.184 Funding: This research received no speciϐic grant from any funding agency in the public, commercial, or not-for-proϐit sectors. Copyright: © 2021 The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. INTELLIGENT LPG GAS LEAK DETECTION AND AUTOMATIC GAS BOOKING ALERT SYSTEM USING PIC MICROCONTROLLER Bhavithra S 1 , Sushmitha B 1 , Venkatesan T 1 and Dr. P. A. Gowri Sankar 2 1 Student, Electrical and Electronics Engineering,, Knowledge Institute of Technology, Salem, Tamil Nadu, India 2 Assistant Professor, Department of Electrical and Electronics Engineering, Knowledge Institute of Technology, Salem, Tamil Nadu, India ABSTRACT LPG gas is primarily used for cooking in our country. This paper focuses on continuous monitoring, booking and leakage detection in household LPG cylin- der. In this system we have used PIC 16F877A microcontroller, GSM SIM 800c module and ESP8266 for monitoring and detection purpose. If gas level goes low, it helps us to make automatic booking of new gas cylinder using GSM mod- ule. Gas level is monitored with the help of the load cell and the current level of the cylinder can be viewed at any time in our mobile phone with the help of mobile application. The gas leakage is sensed with the help of MQ-6 gas sensor. When any leakage is detected, it turns on the buzzer and also alerts the con- sumer through a message. An automatic closure of cylinder valve is done using a solenoid valve and exhaust fans are switched on. By detecting gas leakage, we can avoid accidents which causes damage to life and property. Keywords: PIC Microcontroller, Load Cell, Gas Sensor, Solenoid Valve, Leakage Detection, Booking 1. INTRODUCTION In many countries, LPG is the majorly used fuel for commercial purpose. LPG is the most preferred fuel for cooking and it is more convenient. LPG cylinder is one of the essential in our daily life. The problem arises during the leakage and the user does not know the amount of LPG left in the cylinder. Our system is for the purpose to help the consumers to customize their safety standards, and most inϐluential func- tion is to prevent accidents and protect the life and safety precaution from several phenomenon. Because of this, the user cannot prebook the cylinder. Due to rising demand the user is has to prebook the cylinder. The cylinder is kept above the load cell, it measures the pressure of the cylinder. A MQ-6 gas sensor is used to determine the sensation of leakage in LPG gas. This signal is sent to the microcontroller, With How to cite this article (APA): S, B., B, S., T, V., & Sankar, D. P. A. G. (2021). Intelligent lpg gas leak detection and auto- matic gas booking alert system using pic microcontroller. International Journal of Engineering Science Technologies, 5(3), 1-8. doi: 10.7821/IJOEST.v5.i3.2021.184 1