Method and system for evaluating building fire situation and instructing evacuation

Abstract

The invention provides a method and system for evaluating the building fire situations and instructing evacuation. The method comprises the following steps: monitoring the fire information in real time, and calculating the fire source position information, the fire source strength information and the fire developing situation information according to the fire information; estimating the position information of people in each area of the building, and estimating the density distribution of people in each area; and calculating the best evacuating directions and evacuating paths according to the fire source position information, the fire source strength information, the fire developing situation information, the density information and position information of people in each area of the building and the building structure information. The embodiment of the invention fully utilizes the modern technologies of sensing, communication, calculation, decision making and the like, provides a feasible solution for evacuation based on the disaster developing situation in the building, and improves the decision making and evacuation efficiencies.

Description

technical field [0001] The invention relates to the technical field of building fire monitoring, in particular to a method and system for building fire situation assessment and personnel evacuation indication. Background technique [0002] In current buildings, especially large buildings with complex structures, a fire safety evacuation system is essential, so that when a fire occurs, it can guide the crowd to evacuate and reduce casualties. The traditional fire safety evacuation system consists of static evacuation instructions installed on the passage and pointing to the safety exit. This fire evacuation system has many disadvantages and needs to be improved urgently: [0003] First, the traditional fire evacuation system is a static system, which cannot change with the state of disaster development, so that it is possible to guide people to dangerous areas. For example, during the development of a fire, some evacuation paths are blocked by the fire and cannot pass throug...

AI Technical Summary

Problems solved by technology

The application date is 2007-06-19, and the publication number is CN101079178A's invention patent "a fire warning control system", which tries to use the alarm signal of the fire alarm system to dynamically adjust the evacuation plan, but in this invention only the fire alarm system is used. The limited information of the fire alarm location at the initial stage of the fire did not carry out effective monitoring, prediction and evaluation of the whole process of the fire, and the evacuation plan given by it may no longer be applicable with the development of the fire disaster

[0004] Second, in the traditional fire safety evacuation system, the impact of the congestion of people on evacuation cannot be effectively considered, which may lead to congestion in local areas and reduce the efficiency of evacuation

Due to the lack of an integration method between the personnel location monitoring system and the evacuation system, the fire safety system cannot consider the impact of the real-time distribution of personnel density on the evacuation during the evacuation process, and can only rely on the disaster monitoring information provided by the fire protection system.

The application date is 2005-09-15 and the publication number is CN1783154A for the invention patent "Intelligent Evacuation Indication System"; the application date is 2006-02-1 and the publication number is CN101119771A for the invention patent "Evacuation System Including Escape Guide Lights"; These inventions try to connect the fire alarm system with some dynamic evacuation indicating hardware, so as to give a dynamic evacuation direction, but in these systems, the influence of personnel position and personnel density on evacuation efficiency is not considered

[0005] Third, in the traditional fire safety evacuation system, there is a lack of an effective method for effectively integrating fire sensor monitoring and personnel monitoring systems, and it is impossible to effectively provide an optimized evacuation plan in real time based on monitoring information

However, the expert system used relies on relatively static expert experience, and its input is only limited early fire alarm information, which is not enough to modify the evacuation plan in the process of dynamically changing fire development, and to carry out dynamic emergency situations. respond effectively

[0006] Fourth, in a complex building environment, the traditional fire protection system lacks effective means to provide evacuees with information such as the overall building structure, fire development situation, and the evacuation path that should be selected, which makes evacuation more blind

In the traditional evacuation system, it can only provide local information such as the evacuation direction where the evacuees are located, but there is no effective way to transmit the overall building structure information and the overall fire development situation information inside the building, which are crucial for evacuation decision-making. , thus greatly affecting the decision-making efficiency of evacuation

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