Crowd risk area dynamic calibration method and device based on internal energy and information entropy

A risk area and dynamic calibration technology, applied in data processing applications, instruments, design optimization/simulation, etc., can solve the problems of staying on the theoretical basis, few achievements, incomplete density and speed, etc., to achieve high application value, Improved accuracy and high reliability

Active Publication Date: 2021-06-15
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] So far, there are still some deficiencies in the judgment of crowd risk areas: 1) Most of the research on the risk judgment of crowd evacuation stays on the theoretical basis, and there are not many achievements that are practical
However, only considering the density and speed is not comprehensive, and it is difficult to accurately determine the risk area

Method used

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  • Crowd risk area dynamic calibration method and device based on internal energy and information entropy
  • Crowd risk area dynamic calibration method and device based on internal energy and information entropy
  • Crowd risk area dynamic calibration method and device based on internal energy and information entropy

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Embodiment

[0083] In this embodiment, a scene of a railway station waiting hall is taken as an example to verify the effectiveness of the above method. The area of ​​the waiting hall of the railway station in this embodiment is about 11,340 square meters, and it can accommodate up to 10,000 people waiting at the same time. The evacuation layout of the waiting hall is as follows image 3 shown.

[0084] In the waiting hall scene, the initial number of people is 10,000, evenly distributed in three waiting areas, and evacuated to eight emergency exits, and the simulation step is 200. Figure 4 is the result of a conventional crowd gathering risk model based on the crowd density distribution, Figure 5 It is the result of the hybrid risk assessment model based on internal energy and information entropy proposed by the present invention. The comparison shows that the crowd density near obstacles, intersections, and exits is not very high, but due to the confusion of crowd movement direction...

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Abstract

The invention relates to a crowd risk area dynamic calibration method and device based on internal energy and information entropy, and the method comprises the following steps: constructing a crowd movement fluid dynamic model, and carrying out the pedestrian flow simulation based on the model; calculating crowd internal energy based on a heat enthalpy principle according to a simulation result; and calibrating a crowd risk area based on a thermal entropy principle according to the crowd internal energy and a simulation result. Compared with the prior art, the method has the advantages of high risk assessment accuracy and the like.

Description

technical field [0001] The invention relates to a method for judging a crowd risk area, in particular to a dynamic calibration method and device for a crowd risk area based on internal energy and information entropy. Background technique [0002] The occurrence of any disaster is due to the outbreak of potential risks in the system. Accurate risk assessment of control sites is of great significance for timely and effective control of large-scale pedestrian flow. Existing research methods can be roughly divided into three categories: 1) Statistical analysis methods based on experience. This type of method collects a large amount of literature, proposes various factors that affect the risk of the population, and comprehensively considers various factors to give a risk assessment. Such methods basically belong to the qualitative judgment of risk. 2) State evaluation method based on experiments. Such methods mostly extract and analyze on-site crowd flow data, or simulate crow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/26G06F30/28
CPCG06Q10/0635G06Q50/26G06F30/28
Inventor 赵荣泳王妍贾萍刘琼李翠玲张智舒
Owner TONGJI UNIV
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