We present a novel direction based shortest path search algorithm to guide evacuees during an emergency. It uses opportunistic communications (oppcomms) with low-cost wearable mobile nodes that can exchange packets at close range of a few to some tens of meters without help of an infrastructure. The algorithm seeks the shortest path to exits which are safest with regard to a hazard, and is integrated into an autonomous Emergency Support System (ESS) to guide evacuees in a built environment. The algorithm proposed that ESSs are evaluated with the DBES (Distributed Building Evacuation Simulator) by simulating a shopping centre where fire is spreading. The results show that the directional path finding algorithm can offer significant improvements for the evacuees. © 2014 by the authors; licensee MDPI, Basel, Switzerland.
Kokuti, A., & Gelenbe, E. (2014). Directional navigation improves opportunistic communication for emergencies. Sensors (Switzerland), 14(8), 15387–15399. https://doi.org/10.3390/s140815387