Fire-disaster monitoring device based omnibearing vision sensor

An all-round vision and monitoring device technology, applied to fire alarms, fire alarms, instruments, etc. that rely on radiation effects, can solve problems such as real-time processing, high false alarm rate of fire detection systems, and complex algorithms

Inactive Publication Date: 2007-06-13
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0017] In order to overcome the shortcomings of the existing fire detection system, such as high false alarm rate, incapable of real-time processing, and relatively complex algorithm, the present invention provides an all-round visual sensor-based system that can effectively reduce the false alarm rate, can be processed in real time, and has a simple algorithm. fire monitoring device

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  • Fire-disaster monitoring device based omnibearing vision sensor
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  • Fire-disaster monitoring device based omnibearing vision sensor

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Embodiment Construction

[0124] The present invention will be further described below in conjunction with the accompanying drawings.

[0125] Referring to Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, the omni-directional computer vision sensor system shown in Figure 1, the light entering the center of the hyperboloid mirror 1 is refracted toward its virtual focus 4 according to the characteristics of the hyperboloid mirror surface . The physical image 7 is reflected by the hyperboloid mirror into the condenser lens for imaging. A point P1 (x*1, y*1) on the imaging plane corresponds to the coordinate A(xl, yl, zl).

[0126] In Figure 1, 1-hyperbolic mirror, 2-incident light, 3-hyperbolic mirror focal point Om (O, O, c), 4-hyperbolic mirror virtual focal point is the camera center Oc (O, O, -c ), 5-reflected light, 6-imaging plane, 7-space coordinates A (xl, yl, zl) of the physical image, 8-space coordinates of the image incident on the hyperboloid mirror, 9-reflected on the imaging plane Point P1(x*1,...

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Abstract

The invention is a fire monitoring method and device based on all- direction computer vision, mainly making field monitoring by all-direction computer vision sensor, inputting the taken continuous all-direction image into the computer for continuous image processing and analysis, and obtaining a synthetic result by simple fire mode classification, flame area change characteristic judgment, flame shape change characteristic judgment, flame color characteristic judgment, flame flickering rule characteristic judgment, whole flame motion characteristic judgment and fire intensity characteristic judgment, making different processings according to the calculation and synthetic judgment quantized values to reduce false alarm rate of fire. And the invention provides a truly original, quicker, accurater, more reliable multiparameter intelligent fire monitoring method and device.

Description

(1) Technical field [0001] The invention relates to a fire monitoring device based on an omnidirectional visual sensor. (2) Background technology [0002] The automatic fire alarm system is an automatic fire-fighting facility installed in buildings or other places in order to detect and notify fires early and take effective measures in time to control and extinguish fires. It is one of the indispensable safety technical facilities for modern fire fighting. One. Both domestic and foreign countries attach great importance to automatic fire monitoring. At present, detecting whether a fire occurs is mainly performed by continuously or intermittently monitoring at least one physical or chemical phenomenon associated with the fire. The monitoring methods are usually divided into smoke-sensing type, temperature-sensing type, gas-type and photosensitive type. [0003] According to the definitions of the American Society for Testing and Materials (ASTM) and the International Association f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B17/00G08B17/12
Inventor 汤一平金顺敬叶永杰邓飞顾小凯
Owner ZHEJIANG UNIV OF TECH
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