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Pathfinder: Agent-based personnel evacuation simulation | Analyze stadiums, hospitals, skyscrapers, airplanes and other buildings!

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

Pathfinder

 

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.

 

Features

 

  • 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.

 

 

  • 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.

 

  • 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.

 

  • 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.

 

  • 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.

 

  • Movement Groups

 

Connect families, coworkers, students, or other groups of occupants into groups that will seek each other and maintain a minimum distance apart. These groups can be formed with a leader profile for organized group evacuations or for non-evacuation purposes such as a tour guide through a museum. If one member is too far away, grouped occupants can become disconnected and will slow down to allow the disconnected member to catch up. In crowded environments, this effect is lessened as occupants realize the need to keep traffic moving.

 

  • 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.

 

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