Gas leakages, fire accidents, and explosions remain serious concerns in kitchens, particularly those that rely on LPG for cooking. Undetected leaks not only heighten the risk of fires and explosions but can also cause carbon monoxide poisoning, posing a major threat to human safety. To address these risks, this paper presents an Internet of Things (IoT)- based monitoring system designed to detect gas leakage in real time and immediately alert users to potential hazards. The system is powered by a microcontroller that manages input and output operations. An embedded MQ2 sensor is used to detect the presence of LPG, butane, propane, methane, alcohol, and hydrogen. Once the detected gas concentration exceeds a predefined threshold, the device triggers a rotary buzzer alarm and activates a P10 LED display to notify users of the leakage. This dual-alert mechanism ensures both audible and visual warnings for improved safety. The project aims to prevent or reduce the likelihood of fire, explosions, and gas-related accidents by continuously monitoring gas levels and enhancing situational awareness in kitchen environments. Moreover, it emphasizes affordability, simplicity, rapid responsiveness, and low maintenance, making it an effective prototype for practical application.
Sison et al. (Sat,) studied this question.