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Forest fire forecasting and fire spreading calculation method

A calculation method and forest fire technology, applied in the display field of occurrence and spread, can solve problems such as practical application limitations, and achieve the effects of less dependent parameters, accurate positioning, and convenient acquisition

Pending Publication Date: 2022-02-11
BEIJING FORESTRY UNIVERSITY
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

In the practical application of the forest fire spread model extended by Wang Zhengfei and Mao Xianmin et al., because only the parameters of the wind speed in the above five directions are considered, the practical application is limited

Method used

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  • Forest fire forecasting and fire spreading calculation method
  • Forest fire forecasting and fire spreading calculation method

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Experimental program
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Effect test

Embodiment Construction

[0017] Different from the previous models, the forest fire spread model based on logistic regression added many categories of influencing factors for fitting, which made the model more relevant and fitting; specifically:

[0018]

[0019] First obtain and or add the following factors:

[0020] Longitude, latitude, altitude, slope, average surface air temperature, cumulative precipitation at 20 o'clock, average air pressure, average relative humidity, minimum relative humidity, sunshine hours, average wind speed, maximum wind speed, distance from roads, distance from residential areas;

[0021] Fire risk factor variable table

[0022]

[0023] The forest fire spread simulation method based on the planar octree is different from the existing technology, and has been greatly improved, specifically:

[0024] Taking the fire point as the center, the fire spread direction of the forest sub-compartment is divided into 8 directions of uphill, downhill, left flat slope, right fl...

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Abstract

The invention relates to a forest fire forecasting and fire spreading calculation method. The method includes: selecting forest fire danger factors to establish a logistic regression model, and predicting and forecasting forest fire occurrence; meanwhile, adopting a plane octree-based forest sub-compartment fire spreading simulation method, calculating the spreading speeds in eight directions respectively, realizing forest sub-compartment fire ignition area simulation based on grid image data, and precisely simulating forest sub-compartment fire spreading. A software platform system integrating forest fire forecasting and spreading is designed and developed, various video monitoring systems such as forest fire monitoring, prediction and forecasting, forest fire spreading and fire extinguishing intelligence are integrated in a unified mode, and first-hand information is provided for forest fire fighting decision making.

Description

1. Technical field [0001] The present invention relates to a forest fire spread simulation method for guiding forest fire prediction and forest sub-compartment scale, especially a method for predicting forest fire occurrence by using a logistic regression method and a forest fire spread simulation method established by a plane octree. Finally, through the integration of mobile phone software, the system predicts the occurrence and spread of forest fires. 2. Background technology [0002] The forest fire prediction model based on logistic regression is a prediction model with a relatively high accuracy rate in my country at present. The various factors that affect the occurrence of forest fires (combustible data, meteorological and human factors) are used as independent variables to participate in the model establishment, and certain factors are selected. Fire point and non-fire point data participate in modeling, improve the accuracy of the model, eliminate invalid data in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/26G06F30/20
CPCG06Q10/04G06Q50/26G06F30/20
Inventor 冯仲科安佳怡李玉冬苏珏颖
Owner BEIJING FORESTRY UNIVERSITY