Research And Application Of Real-time Path Search For Emergency Evacuation

Emergency evacuation is an important part of rescue work.Timely and effective emergency evacuation can significantly reduce or even reduce casualties.Path search is the key technology of emergency evacuation simulation.Reasonable and safe evacuation route can effectively help people escape safely.In the process of emergency evacuation,the existing path search method lacks the real-time impact of the environmental information on the evacuation route,which leads to the deviation of the path search results and the loss of casualties.Based on the analysis of emergency evacuation path,this paper proposes a real-time path search method based on Internet of things technology in the emergency evacuation process.Through the construction of the network model,the monkey algorithm is used to parallel search in the segmented sub network model.And a number of different sensor arrangement schemes at different times are obtained.What based on the model of Location Set Covering problem determines the best sensor layout scheme,and establishes the sensor network.The real-time monitoring of the emergency evacuation environment is monitored by the monitoring and controlling system in the information collection system,combined with the process of dynamic spread of disaster,and the real-time weight is set by the data collected by the sensor.According to the path information,the dynamic adjustment parameters are changed,and the A*variable weight algorithm is applied to search the real-time path.On this basis,an evacuation route search system is designed and implemented,including virtual scene construction,sensor layout,information collection system and evacuation route search.The network model is built based on the mine roadway,and the emergency evacuation environment is determined based on the mine water inrush disaster as the accident background.The location of the sensor device is determined by analyzing the data of water level at the different time.After that,the emergency evacuation process is designed,and the real-time weight of the real-time sensor data is taken as the path search algorithm,and the personnel location and quantity are determined by the personnel positioning system.The evacuation simulation is realized by using the integrated dispatching communication system to command the evacuees to evacuate safely.The experimental results show that the method proposed in this paper can obtain the effective shortest evacuation route in real time,and avoid the casualties caused by the shortest evacuation route in time,which cannot be changed according to the change of environmental information in time.It has good practicability and provides the decision basis for emergency rescue work.