According to the current national standards, it is called "automatic tracking and positioning jet fire extinguishing device" or "automatically seeking sprinkler fire extinguishing device"; the electronically controlled fire monitor and automatic fire water monitor use the flame sensor to detect the unique ultraviolet wave of the flame (wavelength is 180~260nm ) And infrared wave (band is 4.35±0.15 um) for operational amplification, analysis and processing, so as to achieve red-ultraviolet (or dual-band) composite fire detection, with high stability and reliability. Digital image recognition technology is also used in China to analyze and process the flame color, shape, brightness and other parameters to realize image detection of fire. However, because image detection of fire only analyzes externally visible physical quantities, it has the disadvantage of high false alarm probability ; But in combination with red-ultraviolet sensor detection technology, it can learn from each other's strengths and make up for such shortcomings.

The role of the fire terminal water test device

The automatic fire water monitor based on red-ultraviolet (or dual-band) composite detection technology analyzes, recognizes, and step-drives the value picked up by the flame sensor and processed by operational amplification through the algorithm program inside the single-chip microcomputer, so as to realize automatic tracking and positioning , Water sprinkler and linkage alarm, automatic fire water monitor based on red-ultraviolet (or dual-band) composite detection technology is currently the mainstream product in China, and its fire detection positioning stability is high.

The automatic fire-fighting water monitor based on digital image recognition technology is also called image-type fire-fighting water monitor. The scene image is picked up by the camera, analyzed and processed by the CPU, and the relative coordinates of the flame on the picture are obtained, and then the coordinates are sent to the drive control of the fire monitor. It drives the motor to move to the calculated coordinate position; this detection and positioning method has the defects of high false alarm probability, large positioning deviation, and poor stability. The Shanghai Fire Research Institute of the Ministry of Public Security and the National Fire Laboratory of the University of Science and Technology of China have done Thousands of experiments have concluded that the false alarm probability and positioning deviation of digital image fire monitors is as high as 90%. Therefore, the National Fire Equipment Supervision and Inspection Center has not accepted the detection business of digital image fire monitors since 2011. The manufacturer uses the detection report of the non-image fire water monitor to impersonate the digital image fire water monitor.