中国科学软件网-首页
Pathfinder——人员紧急疏散模拟软件

Pathfinder是由美国Thunderhead engineering公司进行研发推出的人员紧急疏散模拟软件。

这款软件为大家提供了非常先进的可视化用户界面,还拥有三维动画的效果等;而且软件内置的角色素材库里面包含了许多的内容,

比如:衣着、人体模特、鞋等,可以比相同类型的模拟器更加的真实图形的效果也会更好,拥有完整的三维三角网格设计等等!


1、基于代理的疏散模拟


  快速为您呈现高级运动仿真结合高品质的3D动画效果。


2、灵活的运动仿真


  Pathfinder结合了功能强大的模拟引擎,灵活地控制人口和行为,以提供更好的结果。


3、强大的导入选项

  Pathfinder规定了AutoCAD的DXF格式和DWG文件的导入支持。


  Pathfinder的地板提取工具,使得它可以快速地使用导入的几何图形来定义乘员步行空间的疏散模型。


  PyroSim或火灾动态模拟器(FDS)模型也可用于提取的行走空间。


  如果你有一个蓝图,它可以在GIF,JPG或PNG格式导入,然后作为背景,以帮助您快速直接在图像上绘制你的模型。


4、连续运动网


  Pathfinder采用的是3D三角网格来表示模型的几何形状,其结果是,Pathfinder可以精确地表示几何细节和曲线。


  三角也有利于整个模型的人连续运动,较细分的空间分成更多的细节,它可以人为地限制居住者的运动其他模拟器。


5、功能强大的评估结果


  显示3D效果无论是在计算状态还是在完成状态都是实时的。


  3D显示状态下允许用户以交互方式显示乘客的移动,执行前进和后退,查看视图路径,选择人观赏。


  摘要输出文件包括最小,最大和平均退出时间和先入先出时间和房间门。


  详细信息可在CSV文件中,包括个别人的运动。


  除了3D显示,房间入住率及门流速的图表帮助您快速评估拥塞点


Agent Based Evacuation Simulation

Advanced movement simulation combined with high-quality 3-D animated results, gives you reliable answers quickly.


Pathfinder enables analysis for stadiums, hospitals, skyscrapers, aircraft, and other buildings. Learn how it performs against the competition.


Flexible Movement Simulation

Pathfinder combines a powerful simulation engine with flexible control over population and behavior to deliver better results.


Pathfinder is an emergency egress simulator that includes an integrated user interface and animated 3D results. Pathfinder allows you to evaluate evacuation models more quickly and produce more realistic graphics than with other simulators.

1.png


Robust Import Options

Pathfinder provides support for the import of AutoCAD format DXF and DWG files. Pathfinder’s floor extraction tool makes it possible to quickly use the imported geometry to define the occupant walking space for the evacuation model. PyroSim or Fire Dynamics Simulator (FDS) models can also be used to extract the walking space.


If you have a blueprint, it can be imported in GIF, JPG, or PNG format and then used as a background to help you rapidly draw your model directly over the image.

2.png


Continuous Movement Mesh

Pathfinder uses a 3D triangulated mesh to represent the model geometry. As a result, Pathfinder can accurately represent geometric details and curves.


Triangulation also facilitates continuous movement of persons throughout the model, compared to other simulators that subdivide the space into cells that can artificially constrain the movement of occupants.

3.png


Multiple Simulation Modes

Pathfinder supports two simulation modes. In Steering mode, agents proceed independently to their goal, while avoiding other occupants and obstacles. Door flow rates are not specified but result from the interaction of occupants with each other and with boundaries. In SFPE mode, agents use behaviors that follow SFPE guidelines, with density-dependent walking speeds and flow limits to doors. SFPE results provide a useful baseline for comparison with other results, but SFPE calculations do not prevent multiple persons occupying the same space.


Optionally, Pathfinder allows you to specify door flow rates in steering mode to obtain superior visualization in a constrained model. You can freely switch between modes in the Pathfinder user interface.

4.png


Occupant Movement to Exits

By default, each occupant (agent) uses a combination of parameters to select their current path to an exit. The parameters include: queue times for each door of the current room, the time to travel to each door of the current room, the estimated time from each door to the exit, and the distance already traveled in the room. The agent responds dynamically to changing queues, door openings/closures, and changes in room speed constraints (simulating smoke and debris). The user can modify the default parameter weights to change the behavior. For example, occupants can neglect queues and only look for the closest exit.


Alternately, occupants can be assigned specific goals (such as, go to a location and wait) or specific exits. For example, most occupants of lower floors can be assigned to use stairs, while most occupants of higher floors can be assigned to use elevators.


High-quality 3D Visualization

Pathfinder includes human models that represent a range of cultures, ages, attire, and emergency responders. These make it possible to realistically portray the population group of interest. Because we use a dynamic level-of-detail to display the models, Pathfinder can smoothly animate tens of thousands of people in real time using a standard graphics card.


Pathfinder also provides easy tools to create movies that document the results.


Easy to Understand Contour Plots

Contour plots can add data visualization overlays, such as occupant density, to the floor surfaces of your model for a quick and easy to understand view of simulation results. Smooth playback enables this information in real-time.


Available plots include density, usage, level of service and others. Each of these can be customized by modifying options such as the number of buckets, value ranges, color shading, and feathering.