MQ-2 gas sensor using micro controller arduino uno for LPG leakage with short message service as a media information

Abstract

This research was to detect leakage of liquified petroleum gas (LPG) gas automatically. Design of this device consists of a gas detection sensors LPG MQ-2, which serves to detect the levels of LPG in the air, the sensor signal analog is converted to digital by the ADC and processed by a microcontroller Arduino Uno to command activation of the buzzer and SMS (short message service), sensor system is also capable of displaying a LPG gas concentration detected by the LCD in ppm. The study was conducted at three different space conditions of the open, semi-open and closed, based on the distance detection and characterization. The analysis of the data obtained, that the tool to work optimally at a distance of 3 cm closer to the source of the leak tool then the maximum LPG gas leak detection tools. Based on the characterization of the sensor that is an accuracy of 1 V to 2.6 V and repeatability error of the three conditions of the room is < 10%, so that the tool is expected to cope with and anticipate the risk of accidents due to leakage of LPG gas early and real time.