Study On Intelligent Emergency Lighting Evacuation Guidance System Of Subway Station

Subway is becoming one of the main means of transportation in the developmentof the modernization of cities with the feature of big carrying capacity、no pollution andhigh efficiency in evacuating incentive passenger flow. But the subway and the subwaystation with complicated structure locate in deeper underground where there is nosunshine, which brings great difficulties for emergency relief, once emergencies such asfire accident happen, it will cause casualties and economic losses. The presentemergency lighting system can realize automatic shift between artificial illuminationand emergency lighting when artificial illumination is invalid, but it cannot meetrequirements of the more and more complicated emergency lighting of the subwaystation because of lack of effective evacuation route instructions. Hence, the study ofintelligent emergency lighting system in subway has important applied value andpractical significance.This paper choose subway station as background, aims at the function and featureof subway station, analyses functional requirements and system structure of intelligentemergency lighting evacuation guidance system, proposes overall design plan of thesystem. It makes deep research on the problem of the shortest evacuation path, providesexample analysis and algorithm simulation at the same time, and designs intelligentemergency lighting controller, realizes the function of emergency evacuation directioncombining the algorithm of the shortest path. The research work is divided into thefollowing areas:(1)Studied the problem of the shortest path of personnel evacuation, analysedtraditional algorithm of the shortest path, found the shortest path of personnelevacuation by means of specific example, using Dijkstra algorithm and combining emergency evacuation guidance lights.(2)Aimed at overall design plan of intelligent emergency lighting evacuationguidance system, designed intelligent emergency lighting controller with STM32chipas the core, used master-slave distributed idea, built master-slave node hardwareplatform,also made software design and realization on master-slave node.(3)Studied behavior of personnel evacuation in subway station and personnelevacuation model. On the basis of evacuation of personnel safety standard of subwaystation, combined specific example in subway, on the circumstances of determining theshortest evacuation path, simulated effect of various factors on personnel evacuation insubway station using personnel evacuation software and building station model.