An Introduction of Wireless Sensor Networks (WSN) TechnologyAn Introduction of Wireless Sensor Networks (WSN) Technology Zhan Yi (Student ID:80423272) Kuroda Lab. Department of Electrical Engineering Keio University Outline Introduction What is WSN? Why we need it? WSN structure How WSN is organized? What are the specialties of WSN? The achievement some research units have made UCB (David Culler) Intel UCB (Kris Pister ) MIT Media Lab. (Joe Paradiso) Some fields interesting WSN Introduction (What is WSN?) Habitat Monitoring on the Great Duck Island (USA Maine. 2002/2003. UCB & Intel & Atlantic Univ.) (1) (3) (4) (5) (2) Communication Topology Sensor node Multi-hop wireless Internet or Satellite Sink / Base Station area A Cluster-Head or Aggregator Task Manager Node End User Density of nodes (R) = N R2/A N is number of nodes ……