Rancang Bangun Alat Pendeteksi Kebocoran Gas LPG (Liquefied Petroleum Gas) Berbasis Arduino Uno

Abstract

LPG gas leaks are one of the causes of fires in the community. To prevent these fires, an LPG gas leak detection device was created using MQ-2 and flame detector sensors so that fires can be prevented. The MQ-2 sensor based on the ATMega328 microcontroller functions to detect gas leaks and the flame detector sensor functions to detect an a fire at room. As a form of early prevention of gas leaks, use a servo motor to rotate the switch on the gas regulator tube and exhaust fan to remove air contaminated by the leaking gas. When there is an indication of an LPG gas leak, the tool will send a warning in the form of a buzzer sound as an audio medium and an LCD and LED as a visual medium. The ESP32 Wifi module functions as real time monitoring for users if a leak occurs. From the research results, it was found that the tool will work if there is a leaking gas concentration of 200ppm and fire ADC value under 500 value ADC. The results of the leaked gas concentration are influenced by the sensor resistance, the higher the gas concentration value, the smaller the sensor resistance value.