Research On The Key Technology Of Evacuation In Large Building Fire

In recent years,as China’s economic development,large high-rise buildings gradually increased,at the same time the number of large high-rise building fire occurrence also increases day by day,which caused a great threat to the safety of the lives and property of our people.In order to improve safety evacuation in the large building fire,this paper studied the key technique and algorithm for evacuation in large building fire.This paper completed the design and implementation of large building fire evacuation system after a series of research.This dissertation plans to accomplish the work as follows:(1)Summarized fire evacuation and two kinds of the design of evacuation.the design of evacuation includes design of mandatory evacuation and design of performance-based evacuation.Introduces the common points and differences between two kinds of design,and analyzes the different effects of the two kinds of design patterns.(2)Analyzed a variety of indoor positioning technology.Research traditional navigation and positioning system based on inertial sensors.The traditional navigation and positioning system based on inertial sensors is divided into two aspects,one is the inertial navigation and positioning technology based on traditional integral.The second is the pedestrian dead reckoning based on traditional electronic compass.(3)Researched navigation technology of pedestrian dead reckon based on new various azimuth algorithm.Because of the defects of traditional positioning technique based on inertial sensors,navigation and positioning technology based on new azimuth algorithm is proposed in this paper.This technology guarantees that pedestrians will not completely rely on the electronic compass to get motion direction of pedestrian.And this expands the scope of application of the pedestrian dead reckon technology.(4)Completed a evacuation system in the fire of huge building.In this paper,a required software and hardware platform is used to complete a system for positioning and evacuation people in the fire of huge building in our project.For the convenience of firefighters to help evacuate trapped people,the position will be carry out at the mobile terminal of the system,transmitted to the network side through the mobile communication network and displayed on the map in real-time.