Journal of System Simulation ›› 2022, Vol. 34 ›› Issue (6): 1375-1382.doi: 10.16182/j.issn1004731x.joss.21-0075

• National Security Simulation • Previous Articles    

Simulation of Multi-layer Ship Evacuation System Based on Improved A* Algorithm

Dun Meng(), Zhuo Hu, Huajun Zhang()   

  1. School of Auyomation, Wuhan University of Technology, Wuhan 430070, China
  • Received:2021-01-25 Revised:2021-04-28 Online:2022-06-30 Published:2022-06-16
  • Contact: Huajun Zhang E-mail:914037798@qq.com;zhanghj@whut.edu.cn

Abstract:

Aiming at the low efficiency of emergency evacuation at sea, an emergency evacuation system based on improved A* algorithm is proposed. Based on the network flow model, the traversal mode of the adjacency node is used to complete the path search, and the influence of the path personnel density and path obstacles is added to the calculation of the cost, which makes the algorithm more practical. In order to improve the efficiency of the algorithm, the node optimization of the network is carried out, and a multi-path optimal scheme is proposed in the case of single layer with multiple exits, and the quadratic planning is considered in case of congestion in the path. The results show that the system can provide an effective evacuation path for the multi-storey large cruise ships. It can not only effectively avoid road congestion, but also shorten the evacuation time. The evacuation effect is better than the traditional A* algorithm.

Key words: emergency evacuation, A* algorithm, path planning, network flow models

CLC Number: