Designing a Fire Detection System Using Blynk Application Based ESP32 Microcontroller

Abstract

Fire is a disaster that often occurs in society, resulting in material loss and can cause loss of life. In order to reduce the impact caused by fire incidents, early detection is needed to prevent fires from occurring. In this research, a fire detection system was built by detecting the temperature and smoke contained in a room. The detection system uses a DS18B20 temperature sensor and an MQ135 smoke sensor connected to an ESP32 microcontroller connected to an LED layer. The fire detection system is monitored via a smartphone connected using the blynk application. The fire detection system is conditioned to detect temperatures > 450C and/or detect smoke > 600 ppm. When the temperature sensor detects that the temperature is > 450C and/or the smoke sensor detects that the smoke is > 600 ppm, the buzzer will sound and a fire warning notification will be displayed on the smartphone in real time. From the experimental results, it was found that when the temperature sensor detected a temperature of 48.90C, the buzzer immediately sounded and a temperature of 48.90C appeared on the smartphone and a fire warning notification on the smartphone in real time. An experiment was also carried out to detect the presence of smoke, when the smoke sensor detected 669 ppm, a buzzer immediately sounded and appeared on the smartphone, 669 ppm smoke, and a fire warning notification on the smartphone in real time