Abstract:
This project presents the design and implementation of automated Gas leak detector and
ventilation system, aimed at enhancing safety in environments where LPG is used. The
system utilizes an Arduino Uno microcontroller, an MQ2 gas sensor, an SG90 micro servo
motor, a fan, and a buzzer to detect gas leaks, alert users, and initiate a ventilation process.
The MQ2 sensor detects LPG concentrations and triggers the fan and buzzer when dangerous
levels are detected, ensuring timely mitigation of potential hazards.
Key findings from the system's evaluation showed that the gas detection mechanism was
effective, with the MQ2 sensor detecting LPG concentrations as low as 500 ppm and
triggering the fan and alarm at 1000 ppm. The system demonstrated a response time of less
than 5 seconds, and the ventilation system reduced gas concentration by 50% within the first
5 minutes of operation. The components used, including the servo motor and fan, functioned
reliably throughout the testing phase.
The project successfully meets its objective of responsive, and reliable LPG leak detection
system. However, improvements such as enhanced sensor sensitivity, integration of wireless
communication for remote monitoring, and the addition of features like automatic gas supply
shutdown are recommended for future work to broaden the system’s applicability and
functionality.
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