Flame Sensor

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 Flame Sensor


Flame Sensor: How It Works and Its Applications

A flame sensor is an electronic device used to detect the presence of a flame or fire. It is commonly used in safety systems, fire alarms, and automated electronics projects to prevent accidents.

How It Works

Flame sensors work by detecting the infrared (IR) light emitted by a fire. When a flame is present, the sensor outputs a signal to a microcontroller (like Arduino), which can then trigger an alarm, shut off a system, or take other safety measures.

Key points:

  • Detects infrared light from flames.

  • Works best with open flames like gas stoves, candles, or matches.

  • Can be used in indoor and outdoor environments.

Applications

  1. Fire Alarm Systems – Alerts users when a flame is detected.

  2. Gas Stove Safety – Automatically shuts off the gas if the flame goes out.

  3. Robotics Projects – Robots can detect fire sources in competitions or safety tests.

  4. Industrial Automation – Monitors flames in furnaces or boilers for safety control.

Advantages

  • Quick detection of flames.

  • Small and easy to integrate into electronics projects.

  • Compatible with Arduino, Raspberry Pi, and other microcontrollers.

Example with Arduino

A flame sensor module can be connected to an Arduino using digital pins. When the sensor detects fire, it sends a HIGH signal to the Arduino, which can then turn on an LED or buzzer.


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