Image and multi-band infrared-ultraviolet compound fire disaster detection system and method

Abstract

The invention provides an image and multi-band infrared-ultraviolet compound fire disaster detection system and method. The system comprises a digital signal processor, an image sensor and / or a multi-band infrared detection channel and / or a multi-band ultraviolet detection channel, wherein the digital signal processor is connected with the image sensor, the multi-band infrared detection channel and the multi-band ultraviolet detection channel respectively. An image detector, a multi-band infrared detector and a multi-band ultraviolet detector are compounded together, the detection conditions of other two types of detectors are inquired when a fire disaster signal is transmitted by one type of detector, and an alarm signal is transmitted only when the total fire disaster occurrence probability detected through three types of detectors is higher than a preset threshold value, so that the reliability of the detection system on fire disaster detection is improved.

Description

technical field [0001] The invention belongs to the technical field of fire detection, and in particular relates to an image and multi-band infrared and ultraviolet composite type fire detection system and method. Background technique [0002] At present, fire detectors include image-based video fire detectors, multi-band infrared detectors and multi-band ultraviolet detectors. [0003] For image-based video fire detectors, because the video recognition algorithm is simply used to analyze the video image, specifically including the analysis of the motion, grayscale and brightness characteristics of the flame or smoke, when the motion of a certain area of ​​the video image is analyzed When the transformation frequency of the feature or the brightness or gray scale conforms to the range value in the fire feature library, it is judged that there is a fire. The main defect of this detection method is that when there are people walking around in the monitored site, or there are ...

AI Technical Summary

Problems solved by technology

[0004] For a single multi-band infrared detector or multi-band ultraviolet detector, when there are other strong light sources on the monitored site, such as: sunlight or welding arc light, it will cause greater interference to the detector, so the detector Fire alarm false alarm rate is high

In addition, multi-band infrared detectors or multi-band ultraviolet detectors are based on the detection of flames, that is to say, the detectors will only send out fire alarm signals when there is an open flame at the monitored site. Early warning function

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