MQ-2 gas sensor using micro controller Arduino Uno for LPG leakage with short message service as a media information. Sohibun (a*), Yeza Febriani (b), Ika Daruwati (b), Rindi Genesa Hatika (b), Dedi Mardiansyah (b)
a) Departement of Physics Education, Pasir Pengaraian University, jalan Tuanku Tambusai Pasir Pengaraian Rokan Hulu, Riau 28557 Indonesia.
*bie.idsohib[at]gmail.com
b) Departement of Physics Education, Pasir Pengaraian University, jalan Tuanku Tambusai Pasir Pengaraian Rokan Hulu, Riau 28557 Indonesia.
Abstract
This research was to detect leakage of 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 to 2.6 volts 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.
