Sensor Details
What is a Flame Sensor?
A flame sensor is a device designed to detect and respond to the presence of a flame or fire. It is a critical component in fire alarm and fire suppression systems.
What it Detects:
- It does not detect smoke or heat, but rather the infrared (IR) radiation emitted by a flame.
- It is most sensitive to IR wavelengths between 760 nm and 1100 nm.
How does it work?
The sensor uses a photodiode or phototransistor that is specifically sensitive to infrared light. When the IR radiation from a fire hits the sensor, it changes the sensor's output state (e.g., from a digital HIGH to LOW). A microcontroller can detect this change and trigger an alarm.
Common Applications:
- Fire detection and alarm systems.
- Firefighting robots.
- Automatic fire suppression systems in industrial settings.
- Safety shut-off systems for gas stoves and furnaces.
