Abstract:
In the wake of replacement of wood and kerosene by gas cookers for several purposes in Rwanda, gas leakage has caused several damages in domestic household, factory, kitchens in restaurants, canteens among others, installation of a gas leakage detection device was globally inspired to eliminate accidents related to gas leakage. Liquid Petroleum Gas (LPG) and Compressed Natural Gas (CNG) consist of a mixture of gases like propane and butane. These gases can catch fire easily. LPG is used as propellant, fuel and as a refrigerant. When a leak occurs, the leaked gases may lead to explosion. The number of deaths occurring due to explosion of gas cylinders in Rwanda has increased. So, the leakage should be controlled to protect people from danger by detecting any gas leakage and preventing any accidents.
The aim of this research project is to design an automatic gas accident prevention system that can automatically detect and stop gas leakage in vulnerable premises using MQ 6 gas sensor, This particular gas sensor has high sensitivity to Liquefied Petroleum Gas and natural gases and it detect LPG/CNG gas leakage scenarios and provide a security alert to intended users , if there is any leakage the system will automatically take the preventive measures to avoid fire accidents like turning off the gas supply by turning off the valve and removing the leaked gas from the premises. For extra precautionary method it turns off the main power supply of house.
In order to achieve the aim of this project, a prototype was developed which consists of GSM (Global System for mobile communications) module, which alerts by sending SMS to the owner, it also consists of a Buzzer, LED, fire sensor (sensing both the flame and smoke) and an extinguisher. The gas and fire sensor send out a signal to ESP8266-NodeMCU as soon as it encounters a gas leakage and or fire. The NodeMCU processes these signals and sends out a signal to a buzzer and LCD with required message details
