Flame Sensor

The flame sensor is known as one of the prominent sensors used to detect and respond to the presence of fire or flame. The module is designed based on the IR receiver and basically detects the presence of flammable gases likes’ nitrogen, hydrogen, carbon mono oxide. These sensors can be directly interfaced with the I/O pins of processors and controllers. It operates at a wavelength of the range between 760 nm to 1100 nm in the light source. A flame sensor can even detect lighter flame at roughly 0.8m. This provides a detection angle of roughly 60 degrees and the sensor is particularly sensitive to the flame spectrum.

In order to adjust the sensitivity level, an onboard LM393 op-amp was used as a comparator. Thus the module provides analogue and digital outputs.  The analogue output gives a real-time voltage output signal on thermal resistance, and digital allows temperature thresholds set via a potentiometer.

Moreover, this flame sensor is based on a YG1006 sensor which is a high speed and high sensitive NPN silicon phototransistor. Due to its black epoxy construction, the sensor is highly sensitive to infrared radiation. The flame sensor is defined as an ideal solution in a firefighting robot, which is used as a robot’s eyes to find the fire source. When any flame is detected, the Signal LED will light up, and thereby D0 pin goes LOW. The far-infrared flame probe in the sensor converts the light detected in the form of infrared light into current changes.

Application

• Fire alarm
• Firefighting robot
• Home security system
• SKU: DSM043 Cate