Flame Sensor: It is composed of various combustion products, intermediates, high-temperature gases, hydrocarbons, and inorganic substances as the main body. The thermal radiation of a flame has discrete spectral gas radiation and continuous spectral solid radiation. The radiation intensity and wavelength distribution of different combustion substances vary, but in general, the near-infrared wavelength range and ultraviolet light range corresponding to the flame temperature have a large radiation intensity. Based on this characteristic, a flame sensor can be made.
Far Infrared Flame Sensor
Function and Application: The far-infrared flame sensor can be used to detect the source of fire or other heat sources with wavelengths ranging from 700 nanometers to 1000 nanometers. In robot competitions, the far-infrared flame probe plays a very important role. It can be used as the eyes of robots to find the fire source or the football. It can be used to make fire extinguishing robots, football robots, etc. [1]
Principle Introduction: The far-infrared flame sensor can detect infrared light with wavelengths ranging from 700 nanometers to 1000 nanometers, with a detection angle of 60 degrees. When the infrared light wavelength is around 880 nanometers, its sensitivity reaches the maximum. The far-infrared flame probe converts the intensity changes of external infrared light into changes in current, which are reflected as changes in values within the range of 0 to 255 through the A/D converter. The stronger the external infrared light, the smaller the value; the weaker the infrared light, the larger the value.
Ultraviolet Flame Sensor
The ultraviolet flame sensor can be used to detect thermal radiation emitted by the fire source below 400 nanometers. Principle Introduction: Through the ultraviolet light, the detection angle can be set according to the actual requirements. The ultraviolet transmission visible absorption glass (filter) can detect wavelengths within the range of 400 nanometers. When the infrared light wavelength is around 350 nanometers, its sensitivity reaches the maximum. The ultraviolet flame probe converts the intensity changes of external infrared light into changes in current, which are reflected as changes in values within the range of 0 to 255 through the A/D converter. The stronger the external ultraviolet light, the smaller the value; the weaker the ultraviolet light, the larger the value.