Dr BKC GANESH

Abstract

This paper discusses the development of two cost-effective and efficient gas sensor alarm systems utilizing IoT technology for domestic and remote monitoring scenarios. Gas leakages and fires are significant threats,
particularly in third-world countries, often resulting in loss of lives due to inadequate early-warning systems. To address these critical safety issues, this research implements two innovative methodologies. The first approach
involves the use of an Arduino microcontroller connected to an MQ-2 gas sensor, providing immediate localized alerts through an alarm system and visual indicators like LEDs. The sensor's sensitivity threshold is determined
experimentally, allowing the device to promptly alert occupants in case of gas leakage or fire. The second approach integrates a NodeMCU microcontroller with cloud services (PushingBox and Pushbullet) to send real- time push notifications to mobile devices irrespective of geographical distance or network constraints. Users receive distinctive alerts for different gas leakage severity levels, enhancing the response time and reducing risks associated with delayed detection. The straightforward setup procedure, combined with readily available components and software libraries, ensures that minimal technical knowledge is required for implementation. Overall, the presented IoT solutions offer a practical, scalable, and affordable means to significantly enhance safety measures in residential and remote environments, potentially saving numerous lives.