Design and implementation of flame detection system based on red and ultraviolet sensor

According to the combustion spectra of hydrocarbons, three infrared flame sensors (RD-913FB1, RD-913FB2, RD- 913FB3) based on pyroelectric effect and ultraviolet flame sensor (R2868) based on photoelectric effect are used to develop a flame detector which can quickly detect the surrounding flame by means of its powerful calculation and control capability. By adopting the composite detection technology of four wave band sensors, the detection range of the flame radiation spectrum of the system is enlarged; amplifying and shaping the signal of the sensor by calculating and designing an amplifying filter circuit; The intelligent flame detection algorithm is designed according to the site environment, which can effectively judge whether the surrounding environment produces a fire or not, and quickly carry out acousto-optic alarm. Compared with traditional temperature and smoke flame detectors, the accuracy is also improved. The 0.4 m standard flame is used for the ignition experiment, and the external environment is changed to use automobile headlights, sunlight and artificial light sources as interference items to carry out anti-interference detection on the flame detector. The experimental results show that the flame detector has the characteristics of fast response speed, long detection distance and strong anti-jamming ability, which fully meets the design requirements.