lOT Based Hazardous Gas Detection & Control

Household leakage of liquefied petroleum gas has always been a concern since the early 90's, due to its higher density. After the development of technology, another rising concern was CO (Carbon Monoxide) poisoning. CO is odorless; colorless gas is highly intoxicating and accidental or intentional exposure to it might cause death. Both LPG (Liquefied Petroleum Gas) and CO are highly combustible and without immediate detection of leakage and control will cause loss of life and property. Over the years several ways have been discovered to detect and control these leakages, the now effective existing system is based on GSM technology, where a gas sensor detects the leakage and notifies the owner of the household via text message. This system immediately notifies the owner but is not always effective in turning off the source of leakage. To increase its effectiveness, our system, along with detecting the leakage and notifying the owner also automatically shuts down the source of the gas. The objective of our system is to detect if the hazardous gases (i.e) LPG gas is within the range 200 to 10,000 ppm and CO is within the range 200 to 1000 ppm. The micro controller ESP32 is also programmed to automatically shut down the source if the gas leakage exceeds their respective ranges without any manual help.