송수신 에너지 효율성을 고려한 선내 자율구성 대피경로 유도 시스템

Abstract

Using current evacuation methods, a crew describes the physical location of an accident and guides evacuation using alarms and emergency guide lights. These methods are unsuitable for dynamically changing emergency situations, owing to the lack of real-time status information. Therefore, several studies have been performed on emergency evacuation. However, because most studies were about centralized guidance methods, real-time sensing data still cannot be delivered to a central control server. Thus, passengers are unable to receive optimal routing information when the evacuation guidance system is isolated from the viewpoint of communication and/or power. Thus, distributed schemes are proposed to tackle these problems. However, in a distributed system architecture, energy-efficient operations of decision nodes during emergencies must be considered, because operating power may be insufficient for the deployed nodes. In this paper, we propose a distributed evacuation guidance system that considers the energy-efficiency of data exchange and guarantees accurate delivery of guiding information. Performance evaluation using a computer simulation shows that the proposed scheme guarantees energy-efficient operations and sufficient information accuracy for effective evacuation.