• ISSN: 1674-7461
  • CN: 11-5823/TU
  • 主管:中国科学技术协会
  • 主办:中国图学学会
  • 承办:中国建筑科学研究院有限公司

视野受限条件下考虑引导员干预的人群疏散模型

Crowd Evacuation Model Considering Guide Intervention Under Limited Visual Field Conditions

  • 摘要: 针对紧急情况下由于烟雾、光线不足导致的行人视野受限现象,以及传统疏散模型中存在的感知全知全能和引导效应简化等不足,本文提出了一种考虑视野受限和引导员干预的人群疏散模型。该模型通过整合社会力模型的精确运动描述能力与Agent理论的自主决策能力,构建了清晰的“感知-决策-运动”的层次化架构。基于此,该模型引入行人视野受限机制,将Agent的感知能力限制在一定范围内,更真实地模拟紧急情况下行人的有限认知;设计并实现了静态与动态双模式引导员干预机制,建立引导员与普通行人的精细化交互模型。实验分析了视野半径变化、引导员补偿作用以及引导员初始位置对疏散效率的影响。仿真结果表明:视野半径对疏散效率有着显著影响,在示例场景中,当视野半径从2m增加到4m时,疏散时间减少了42.8%;引导员可有效补偿视野受限影响,在视野严重受限(2~3m)条件下,静态引导员比动态引导员效果更佳,分别缩短疏散时间约4.34s和2.45s;引导员的初始位置对改善疏散效率具有关键作用,静态引导员在房间中心位置表现最佳,动态引导员则在房间远离出口一侧位置效果最优。

     

    Abstract: To address the phenomenon of limited pedestrian vision caused by smoke and insufficient lighting during emergencies, as well as the shortcomings of traditional evacuation models such as omniscient perception and simplified guidance effects, this paper proposes and implements a crowd evacuation model incorporating limited vision and guide intervention. The model constructs a clear hierarchical "perception–decision–movement" architecture by integrating the precise motion description capabilities of the social force model with the autonomous decision-making abilities of Agent theory. Building on this architecture, the model introduces a pedestrian visual field limitation mechanism that confines Agent perception to a specific range, thereby more realistically simulating the constrained cognition of pedestrians in emergencies. Furthermore, it designs and implements a dual-mode (static and dynamic) guide intervention mechanism, establishing a refined interaction model between guides and ordinary pedestrians. Experiments analyze the effects of visual radius variation, guide compensation, and guide initial positioning on evacuation efficiency. Simulation results demonstrate that: Visual radius significantly impacts evacuation efficiency—in the test scenario, increasing the radius from 2m to 4m reduced evacuation time by 42.8%; Guides effectively compensate for limited vision, with static guides proving more effective than dynamic guides under severely restricted vision (2-3m), reducing evacuation time by approximately 4.34 seconds and 2.45 seconds, respectively; The initial position of guides plays a critical role in improving efficiency—static guides achieve optimal performance at the room center, while dynamic guides exhibit optimal effectiveness when positioned on the side away from the exit.

     

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