Design and development of smart evacuation system using hybrid wireless protocol interfaces

Abstract

The main aim of the work is to monitor the abnormal building parameters newlineand alert the occupants about risk areas with safest routes to evacuate safely. newlineDisastrous accidents occur due to fire, toxic-gas release and earthquake in large newlineresidential buildings and offices which damage the passages, stairways and exit newlinepoints. Users often panic because, they are not completely aware of safety exit newlinedue to the disoriented evacuation strategies. An autonomous system to be newlineintegrated with technical advancements is much required to alert the users to newlinefind out themselves safe and shortest path to exit eventually. The system may newlinedirect the users by suggesting a path which is less risky and also inform about newlinethe crowd density. The evacuation system is supported by Wireless Sensor newlineNetwork (WSN). Deployable wireless sensor nodes are involved to measure the newlineenvironmental parameters. A wireless sensor node equipped with sensors, newlinetransmission intelligence, power management and computational capability has newlinebeen developed. newlineThe transmission over wireless medium experiences packet loss due to newlinevarious factors such as, interferences, improper deployment scenario, distance, newlinepoor signal strength and single wireless network deployment. This work presents newlinea network architecture which is supported by three-tier wireless protocol newlineinterface, such as Bluetooth, Zigbee and Wi-Fi for monitoring ambient newlineparameters in a building. The Cooperative Network Coding Communication newline(CNC-C) is established by using indigenously developed network resources, newlineincluding multiple sensor nodes and a destination node. A real time newlineExperimental study of hybrid wireless network interface with CNC-C in a four newlinestoried library environment is demonstrated. newline