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

A technology of fire detection and infrared detection, which is applied to fire alarms, instruments, alarms, etc., can solve the problems of detector interference, high false alarm rate of fire alarms, and lack of fire warning function, etc., and achieve the goal of improving reliability Effect

Active Publication Date: 2012-10-03
北京中恩时代科技有限责任公司
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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

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

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[0047] The image provided by the present invention and the multi-band infrared and ultraviolet composite fire detection system and method are described in detail below in conjunction with the accompanying drawings:

[0048] Such as figure 1As shown, the present invention provides an image and multi-band infrared-ultraviolet composite fire detection system, comprising: a digital signal processor; also including an image sensor and / or a multi-band infrared detection channel and / or a multi-band ultraviolet detection channel; the The digital signal processor is respectively connected with the image sensor, the multi-band infrared detection channel and the multi-band ultraviolet detection channel. Wherein, the image sensor may be a CMOS image sensor, and the digital signal processor may be a DM3730 digital signal processor. The multi-band infrared detection channel includes an infrared photoelectric sensor, a first operational amplifier and a first analog-to-digital conversion cir...

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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 ...

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Application Information

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IPC IPC(8): G08B17/00
Inventor 孙宇臣李志双王建东
Owner 北京中恩时代科技有限责任公司
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