Reference
The article delves into the principles behind flame sensors, explaining how they utilize infrared light sensitivity to detect fires, and discusses their operational parameters and safety precautions.
Principle
The thermal radiation of flame has gas emission with discrete spectrum and solid radiation with continuous spectrum. The radiation intensity and wavelength distribution of flame vary from burning objects. Generally the near-infrared and UV light of flame has great radiation intensity. The flame sensor is made on the basis of this feature. As infrared light is sensitive to flame, the sensor employs special IR receiver to detect flame, then converts the intensity of surrounding infrared light to level change, and inputs it into CPU, which will make corresponding program processing according to the signal change.
Other Supplementary Information
The flame sensor can be used to detect fire sources or other light sources with wavelength of 760nm-1100nm and detection angle of up to 60 degrees. And it can work at -25 to 85℃ with stable and reliable performance.
When flame increases, the output signal increases; when it decreases, the output signal decreases.
Note: Although the sensor is designed to sense fire, it is not fireproof. So please keep a distance from the flame when using it to avoid burning sensor.
Turn to the Boson Kit Page
Was this article helpful?