A level-set based approach for the path planning of human evacuations in contaminated indoor environments

摘要

This work considers a level-set based method for path planning of human evacuation in a hazardous indoor environment. The algorithm developed examines the accumulated inhalation of carbon monoxide over a generated path and determines the evacuees survivability. The accumulated inhalation of a hazardous substance is calculated via the line integral of the substance concentration over the selected path. The candidate paths are generated by calculating the constant angle paths towards the exit if the critical level-set of the gas concentration has not been reached. Once the path overlaps with the selected level set, a new set of angles is calculated so that the path follows the level-set. Simulations of both spatially and spatiotemporally varying fields of the hazardous gas are examined.