Early warning method and system for crowd gathering in public areas based on risk probability assessment

Abstract

The invention discloses a public area crowd gathering early warning method and system based on risk probability assessment. Images are collected in real time from intelligent monitoring equipment, and measurable parameters of the crowd are obtained from the image stream. The central main control server is based on the crowd's measurable parameter values ​​and Based on the two-dimensional risk matrix, a four-level early warning model is constructed. Based on this model, the measurable parameters of the input population are analyzed, and the alarm is automatically issued according to the prediction results. The method and system are based on real-time judgment and prediction, dynamically analyze and warn the crowd flow and other states, perform statistics, analysis and evaluation on the measurable parameters of the crowd, form risk probability evaluation results, and then generate corresponding early warning information, with good real-time performance. , the prediction accuracy rate is high, and the warning can be given in advance as much as possible to avoid the occurrence of dangerous situations as much as possible. Effectively reduce personnel and property losses.

Description

technical field [0001] The invention relates to the technical field of risk early warning, in particular to a method and system for early warning of crowd gathering in public areas based on risk probability assessment. Background technique [0002] With the steady development of the economy, people's demand for materials and culture has increased, and correspondingly, the number of urban public places (referred to as public places or public areas, that is, urban public spaces) has also increased sharply. Public places have always been the main venues for a variety of businesses such as entertainment, culture, traffic and transportation, sports and religious gatherings. [0003] With the sharp increase in the number of public places, more crowd gathering activities are carried out in various public places, and safety incidents such as crowd stampedes have aroused great concern. According to incomplete statistics, tens of thousands of people die in emergency situations all ov...

AI Technical Summary

Problems solved by technology

However, insufficient and outdated public places and facilities may greatly increase the risk of high mobility and high levels of crowding

[0006] (2) The inherent characteristics of public places are significantly exposed to disasters, which makes the disaster relief system relatively weak

[0021] 1. Illegal hijacking of aircraft in flight, illegal hijacking of aircraft on the ground,

[0022] 2. Destruction of an aircraft in service,

[0031] First of all, the location and time of the occurrence are uncertain. All public places are likely to be impacted by crowds at any time, especially at the entrances and exits, corridors and stairs of buildings, etc. The greater the density of the crowd, the more likely there is a stampede happened;

[0032] Second, a stampede may be caused by many reasons, evacuation leading to an emergency or a large number of people crowding at an exit or entrance, or an unexpected violent event, etc. may cause a stampede without obvious reasons;

[0033] Third, control the rush. Once it happens, a large number of people will be on the verge of casualties in a very short period of time (a few seconds to a few minutes), and there will be a lot of chaos on the scene;

[0034] Finally, when a crowd gathers, it will generally cause casualties, which will lead to great danger

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