Hossain, Md Golam SorwarKabir, Md. SaifJalal, JunaidJannat, RaiyanBegum, FatemaKhan, Mansia SamranaRahman, Fardeen2026-04-232026-04-2320252025-09ID 22221061ID 22121114ID 22121115ID 20221032http://hdl.handle.net/10361/28041Cataloged from PDF version of final year design project.Includes bibliographical references (pages 77-78).This final year design project is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2025.Liquefied Petroleum Gas (LPG) is widely used in Bangladeshi households, but its high flammability makes LPG leakage a critical safety concern. Very few detection systems exist, and the conventional ones are often expensive, grid-dependent and limited to alarms. This project presents a solar-powered smart gas leakage detection and management system for residential kitchens. The prototype integrates dual gas sensors (MQ-2, MQ-6), Arduino Uno controllers, GSM-based remote alert, Bluetooth-enabled subsystem communication, automatic ventilation through an exhaust fan and linear actuator and a solenoid valve to cut off gas supply. The batteries of the entire system are solar-charged and ensure continued operation with no human intervention. Testing under simulated leakage conditions confirmed accurate detection at a 2000 ppm threshold, rapid activation of safety measures, and stable performance for up to three hours on solar backup. Therefore, the system demonstrates a cost-effective, sustainable solution to improve household gas safety.91 pagesenBRAC University project reports are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.Smart gas detectionLPG leakageSolar-charged systemPipeline safetyKitchen safetyGas leakage--Environmental aspects.Gas engineering--Environmental aspects.Gas detectors.Chemical detectors.Wireless sensor networks.Wireless sensor nodes.Gas leakage--Prevention.Project Report