智能疏散系统导向标志计算及疏散路径仿真

为了解决大型综合建筑中智能疏散系统在火灾等突发情况发生时可根据复杂建筑结构规划出合理、安全的疏散路径问题,提出了一种基于改进A~*算法的多起点、多出口路径规划方法。通过增加转弯惩罚值,结合火灾影响区域实时信息和火灾中心点的距离改进了估价函数,进而计算出最优疏散路径。依据搜索出的最优路径调整三维楼层地图中各个导向标志方向,从而引导不同位置人员从最优路径疏散逃生。仿真实验结果表明,在计算多起点、多出口疏散路径时,改进A~*算法与传统Dijkstra算法和A~*算法相比,搜索方向更加明确,路径更加平滑,搜索效率更高,运行时间更短,并能结合火灾信息保证疏散路径的安全性。该算法在求解大型综合建筑火灾安全疏散路径方面具有很好的应用前景。

Intelligent evacuation system guidance sign calculation and evacuation path simulation

In order to solve the problem that the intelligent evacuation system in large-scale integrated buildings can plan a reasonable and safe evacuation path according to the complex building structure when the fire occurs, the multi-start multi-egress path planning method based on the improved A^* algorithm is proposed. By increasing the turning penalty value, the real-time information of the fire affected area, and the distance of the fire center point are improved to improve the valuation function, and then the optimal evacuation path is calculated. According to the searched optimal path, the direction of each guiding mark in the three-dimensional floor map is adjusted, thereby guiding people at different positions to evacuate from the optimal path. The simulation experiments show that compared with the traditional Dijkstra algorithm and A^* algorithm, the improved A^* algorithm in calculating multiple starting points and multi-export evacuation paths has a clearer search direction, a smoother path, and a higher search efficiency and shorter running time, and combines fire information to ensure evacuation path security. The algorithm has a good application prospect in solving the fire safety evacuation path of large-scale integrated buildings.