Energy-Efficient Gas Leak System with GSM and Alarms

Aiming at problem of gas leakage in household specially at remote area, an energy efficient Gas Leak monitoring and alarm System based on GSM is designed. The following is a design and development of an LPG leakage detection system using the AT89C51 microcontroller, MQ-5 gas sensor, and GSM module for notification. The system scans the surrounding air continuously for LPG gas and alerts if there is a leak. As soon as a threshold level of LPG is sensed, the system triggers a buzzer and sends an SMS notification to a preprogrammed mobile number. The system incorporates a real-time LCD display that displays the status information, such that immediate detection and action can be taken. The system proposed above provides an efficient and cost-effective solution towards augmenting safety in domestic as well as industrial premises. Test results demonstrate the system's capacity to sense LPG leaks in under 4.5 seconds and consistently send SMS notifications even in poor network conditions. This technique is far superior to conventional leak detection systems by providing both local and remote notification capabilities with possibilities for future integration such as automatic shut-off valves and multi-gasdetection.