Compared with the point detection principle of point flame detectors, image fire detectors use the imaging principle. In the point detection principle, the energy of the target and the interference source is superimposed on the unit device; while in the imaging principle, the energy of the target and the interference source is reflected in different unit devices respectively. Therefore, the image detector can easily distinguish the target from the interference source in principle, and the point flame detector does not have this possibility.
In addition, image-type flame detectors can detect fires from more dimensions, while point-type flame detectors can only detect fires from fewer dimensions.
(1) Imaging detectors can distinguish fires in seven dimensions, while point detectors can only distinguish fires in three dimensions. This is the main reason why image-type fire detectors can shield various interferences.
(2) The biggest advantage of imaging detectors is that they have spatial resolution, which is why they can distinguish real fires from interference sources, and why some contamination and occlusion factors have no effect on them.
(3) The detection element of imaging detectors is a focal plane with 300,000 to 400,000 pixels, while point-type detectors only have a few pixels. Therefore, the sensitivity is very poor.
(4) Imaging detectors make more judgments in other dimensions (such as polarity), or make coordinated judgments in multiple dimensions.
(5) Imaging detectors use dual-channel optical processing methods, which greatly suppresses the impact of ambient light on fire detection.
(6) Imaging detectors use a variety of flame features and pattern recognition algorithms to correctly distinguish between fire sources and interference sources.
In summary, image-type fire detectors use imaging detection and processing methods, and the dimension used to characterize fire is higher than that of point-type detectors (not point-type smoke detectors here), and have a higher ability to shield external interference and detect small fire sources. They are particularly suitable for use in open industrial occasions. At the same time, image-type fire detectors can provide video monitoring functions and have the ability to remotely confirm fires and perform emergency treatment on fire scenes. Other types of detectors cannot shield various external interferences, which will bring many false alarms, and cannot detect small fire sources, which will lead to false alarms, especially in outdoor environmental conditions. False alarms and false alarms. are generated very frequently.
Compared with the point detection principle of point flame detectors, image fire detectors use the imaging principle. In the point detection principle, the energy of the target and the interference source is superimposed on the unit device; while in the imaging principle, the energy of the target and the interference source is reflected in different unit devices respectively. Therefore, the image detector can easily distinguish the target from the interference source in principle, and the point flame detector does not have this possibility.
In addition, image-type flame detectors can detect fires from more dimensions, while point-type flame detectors can only detect fires from fewer dimensions.
(1) Imaging detectors can distinguish fires in seven dimensions, while point detectors can only distinguish fires in three dimensions. This is the main reason why image-type fire detectors can shield various interferences.
(2) The biggest advantage of imaging detectors is that they have spatial resolution, which is why they can distinguish real fires from interference sources, and why some contamination and occlusion factors have no effect on them.
(3) The detection element of imaging detectors is a focal plane with 300,000 to 400,000 pixels, while point-type detectors only have a few pixels. Therefore, the sensitivity is very poor.
(4) Imaging detectors make more judgments in other dimensions (such as polarity), or make coordinated judgments in multiple dimensions.
(5) Imaging detectors use dual-channel optical processing methods, which greatly suppresses the impact of ambient light on fire detection.
(6) Imaging detectors use a variety of flame features and pattern recognition algorithms to correctly distinguish between fire sources and interference sources.
In summary, image-type fire detectors use imaging detection and processing methods, and the dimension used to characterize fire is higher than that of point-type detectors (not point-type smoke detectors here), and have a higher ability to shield external interference and detect small fire sources. They are particularly suitable for use in open industrial occasions. At the same time, image-type fire detectors can provide video monitoring functions and have the ability to remotely confirm fires and perform emergency treatment on fire scenes. Other types of detectors cannot shield various external interferences, which will bring many false alarms, and cannot detect small fire sources, which will lead to false alarms, especially in outdoor environmental conditions. False alarms and false alarms. are generated very frequently.