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Title

Automatic Exhaust System for Gas Leakage Detection and Mitigation .

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Introduction

Overview:

  • Gas leaks are a major safety concern in residential, commercial, and industrial environments. Leaks from sources such as LPG cylinders, natural gas pipelines, or chemical storage facilities can lead to fire hazards, explosions, and health risks due to inhalation of toxic gases. In many cases, gas leaks go undetected until they reach dangerous levels, making early detection and ventilation essential for preventing accidents.
  • An Automatic Exhaust System for Gas Leakage is a smart safety solution designed to detect hazardous gas leaks and respond immediately by activating an exhaust fan to ventilate the affected area. This system ensures that gas concentrations remain at safe levels, reducing the risk of fire and exposure to harmful fumes

Objective:

  • To design and implement a system that automatically detects gas leaks and activates exhaust fans to ventilate the area.

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Components

  • Arduino UNO
  • MQ2 Gas sensor
  • Relay Module
  • Exhaust fan
  • Adaptor
  • Arduino USB cable
  • Jumper wires

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Components

A. Arduino Uno:

The Arduino Uno acts as the central controller for the system. It processes data from the gas sensor and controls the relay that powers the exhaust fan.

B. MQ2 Gas Sensor:

The MQ2 sensor is primarily used to detect the presence of flammable gases in the air such as, LPG, methane, propane carbon monoxide.

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Components

C. Relay Module:

The relay acts as an electrical switch that is controlled by the Arduino to turn on or off high-power devices like the exhaust fan.

D. Exhaust Fan:

The exhaust fan ventilates the room by expelling the gas-filled air

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Working Principle

  • Gas Leak Detection: When the gas sensor (MQ2) detects that the gas concentration exceeds the set threshold, it sends a signal to the Arduino.
  • Arduino Action: The Arduino receives the sensor's data and compares it with the predefined threshold value. If the detected gas concentration is above the threshold, the Arduino triggers the relay to activate the exhaust fan
  • Exhaust Fan Operation: The relay closes the circuit, allowing the exhaust fan to receive power and start ventilating the area, removing the hazardous gas.
  • Deactivation: Once the gas concentration falls below the threshold, the Arduino deactivates the relay, turning off the exhaust fan

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Applications and Benefits

  • Applications
  • Industrial Plants: Removes leaked gases from factories dealing with chemicals, refineries, and gas-based operations.
  • Residential & Commercial Kitchens: Prevents the buildup of LPG (Liquefied Petroleum Gas) or methane leaks.
  • Laboratories: Ensures safe air quality by ventilating toxic or flammable gases.
  • Underground Parking & Tunnels: Extracts carbon monoxide (CO) and other harmful gases from vehicle emissions.
  • Gas Storage Facilities: Prevents accumulation of leaked gases by actively ventilating enclosed areas.
  • Benefits
  • Enhances safety by preventing gas-related accidents .
  • Provides automatic operation, reducing human intervention.
  • It is energy-efficient as fan operate only during leaks.

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Conclusion

An automatic exhaust system for gas leakage is a crucial safety mechanism designed to detect and mitigate the risks associated with gas leaks in residential, commercial, and industrial settings. By integrating gas sensors, exhaust fans, and automated control systems, this system can effectively detect leaks, activate ventilation, and prevent hazardous gas accumulation.

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Thank you.