Abstract: A cost-effective, Automated Unified System for Liquefied Petroleum Gas (LPG) booking, leakage detection, Real time gas monitoring system and automatic controlling of LPG regulator is proposed in this paper. The aim of this paper is to monitor for LPG leakage to avoid fire accidents providing house safety feature where security has been an important issue. The system detects the leakage of the LPG using gas sensor MQ6 and alerts the consumer about the gas leakage by sending SMS using GSM module and simultaneously activating the alarm and exhaust fan. The system additionally provides the automatically controlling of LPG regulator using electromechanically operated solenoid valve. To avoid the blast this system will disconnect the main power supply using relay. The additional advantage of the system is that it continuously monitors the level of the LPG present in the cylinder using weight sensor and automatically books the cylinder using a GSM module.

Keywords: LPG, gas cylinder monitoring, gas leakage detection and prevention, GSM, Alarm.