Intelligent evacuation system guidance sign calculation and evacuation path simulation

Abstract

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*</sup> 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*</sup> algorithm, the improved A*</sup> 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.

Keywords

• artificial intelligence theory; route plan; grid method; a* algorithm; dijkstra algorithm; guide mark