ABSTRACT

Liquefied Petroleum Gas (LPG) leakage poses great danger in this era where its use has become an important source of energy for industries, homes and vehicles alike. A means of avoiding dangers associated with LPG leakage is to install LPG leakage detectors at susceptible areas. The objective of this proposed project therefore is to design and implement a microcontroller based LPG leakage monitoring, detection and control system. The system will be able to detect LPG leakage using MQ-5 gas sensor and alerts the user of the leakage through GSM-based SMS and a buzzer. Most importantly, the will be able system shuts off LPG supply to minimise wastage and prevent accidents. This will be achieved using datasheets in selecting suitable components for the circuit design and using Proteus in simulating the proposed design in order to validate the feasibility of the design. At the end of this proposed project ;when LPG concentration in the air exceeds the set threshold, the system will immediately alerts the user by sending SMS to two specified mobile number programmed with the sim900 A6 GSM (Global system for mobile communication) module and activate the alarm buzzer simultaneously, displaying the information on an 16x2 LCD. A signal will also be sent to the solenoid valve to shut off LPG supply. This design will provide adequate safety and prevent gas wastage and accidents associated with LPG leakage, by providing notification of gas leakage and shutting off the gas supply.