Design and assemble of a Liquefied Petroleum Gas(LPG) Detector System

Abstract

LPG detector system is a system that detects LPG leakages and alerts the proprietor through direct phone calls and SMS and also lights a red LED as it sounds the buzzer. It uses an Arduino Nano as a micro controller on to which other devices such as the MQ2 sensor, pressure sensor, LEDs, buzzer, GSM are connected. Headers are used to solder all the mentioned components together on to a perforated board. The system also uses the pressure sensor to measure the pressure of LPG in the gas cylinder. When the pressure of the LPG in the cylinder goes below 93, the green LED lights and when the pressure continues to drop between 90 and 60, the red LED lights so as to alert the user about the decreasing levels of LPG in the gas cylinder. When there is an enormous drop of the pressure to a value below 40, the buzzer is sounded so as to alert the user that the LPG is almost finished in the cylinder so as they can take it for refilling. The system also works along a mobile application and thingspeak since the Arduino Nano doesn’t come with a pre-installed database, thus the thingspeak is an IoT that lies between the hardware and the mobile application that was created to provide a user interface (UI). With the mobile application, the user is able to monitor all the recorded data of the sensors connected to the Arduino Nano