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Principle of flame sensor

Principle of flame sensor

  • Categories:Industry news
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  • Time of issue:2021-01-29
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Principle of flame sensor

  • Categories:Industry news
  • Author:
  • Origin:
  • Time of issue:2021-01-29
  • Views:0
Information

Flame Sensor is a sensor specially used by robots to search for fire sources. Of course, the flame sensor can also be used to detect the brightness of light, but the sensor is particularly sensitive to flames. The flame sensor uses infrared light to be very sensitive to flames, uses a special infrared receiver tube to detect the flame, and then converts the flame’s brightness into high and low level signals and inputs To the central processing unit, the central processing unit performs corresponding program processing according to the change of the signal.

< span style="font-family:宋体">Flame sensor: It is composed of various combustion products, intermediates, high-temperature gases, hydrocarbons and inorganic substances as the main high-temperature solid particles. The thermal radiation of flame has discrete spectrum of gas radiation and continuous spectrum of solid radiation. The flame radiation intensity and wavelength distribution of different burning materials are different, but in general, the near-infrared wavelength domain and ultraviolet light domain corresponding to flame temperature have great The radiation intensity can be made into a flame sensor based on this characteristic.  

< span style="font-family:宋体">Far infraredFlame Sensor:

< span style="font-family:宋体">Function and purpose: far-infrared flame sensor can be used to detect fire or other heat sources with a wavelength in the range of 700 nm to 1000 nm. In robot competitions, far-infrared flame detectors play a very important role. It can be used as the eyes of the robot to find the source of fire or football. It can be used to make fire extinguishing robots, football robots, etc.

< span style="font-family:宋体">Introduction to the principle: the far-infrared flame sensor can detect infrared light with a wavelength ranging from 700 nanometers to 1000 nanometers, and the detection angle is 60 degrees. When the wavelength of infrared light is close to 880 nanometers, its sensitivity reaches its maximum value. The far-infrared flame detector converts the intensity change of the external infrared light into a current change, which is reflected by the A/D converter as a value change in the range of 0-255. The stronger the external infrared light, the smaller the value; the weaker the infrared light, the larger the value.

< span style="font-family:宋体">UVFlame sensor:

< span style="font-family:宋体">The ultraviolet flame sensor can be used to detect thermal radiation below 400 nanometers from a fire source.

< span style="font-family:宋体">Introduction to the principle: Through ultraviolet light, the detection angle can be set according to the actual situation. The ultraviolet transmission visible absorption glass can detect the wavelength within the range of 400 nanometers, and the wavelength of infrared light is about 350 nanometers. The ultraviolet flame detector converts the intensity change of the external infrared light into a current change, which is reflected by the A/D converter as a value change in the range of 0 to 255. The stronger the external ultraviolet light, the smaller the value; the weaker the ultraviolet light, the larger the value.

 

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