Wireless Sensor Networks Lớp ĐT1_K48 Nhóm thực hiện:Nguyễn Đức Tồn Phạm Phú Tuấn Nguyễn Anh Tuấn Nguyễn Ngọc Đức Đào Quang Trung Phạm Quốc Vượng Giáo viên hướng dẫn: MỤC LỤC INTRODUCTION COMMUNICATION NETWORKS WIRELESS SENSOR NETWORKS Example INTRODUCTION • Smart environments represent the next evolutionary development step in building, utilities, industrial, home, shipboard, and transportation systems automation Like any sentient organism, the smart environment relies first and foremost on sensory data from the real or1d Sensory data comes from multiple sensors of different modalities in distributed locations INTRODUCTION 2.COMMUNICATION NETWORKS 2.1 2.2 2.3 2.4 Network Topology Communication Protocols and Routing Power Management Network Structure and Hierarchical Networks 2.1 Network Topology Mesh networks • Mesh networks:are regularly distributed networks that generally allow transmission only to a node’s nearest neighbors The nodes in these networks are generally identical, so that mesh nets are also referred to as peer-to-peer nets • Mesh nets can be good models for largescale networks of wireless sensors that are distributed over a geographic region 2.2 Communication Protocols and Routing 2.2 Communication Protocols and Routing *Multiple Access Protocols: In: -ALOHA -TDMA -FDMA -CDMA *Open Systems Interconnection Reference Model (OSI/RM) 2.3 Power Management 2.4 Network Structure and Hierarchical Networks • Multicast Systems 2.4 Network Structure and Hierarchical Networks • Hierarchical Networks 2.4 Network Structure and Hierarchical Networks • Hierarchical Networks 2.4 Network Structure and Hierarchical Networks • Hierarchical Networks WIRELESS SENSOR NETWORKS 3.1 IEEE 1451 and Smart Sensors 3.2 Transducers and Physical Transduction Principles 3.3 Sensors for Smart Environments 3.4 Commercially Available Wireless Sensor Systems 3.1 IEEE 1451 and Smart Sensors 3.1 IEEE 1451 and Smart Sensors 3.2 Transducers and Physical Transduction Principles • Mechanical Sensors - The Piezoresistive Effect -Tunneling Sensing -Capacitive Sensors • Magnetic and Electromagnetic Sensors -Thermal Sensors -Acoustic Wave Sensors • 3.3 Commercially Available Wireless Sensor Systems • Crossbow Berkeley Motes may be the most versatile wireless sensor network devices on the market for prototyping purposes Crossbow (http://www.xbow.com/) makes three Mote processor radio module families– MICA [MPR300] (first generation), MICA2 [MPR400] and MICA2-DOT [MPR500] (second generation) Nodes come with five sensors installed- Temperature, Light, Acoustic (Microphone), Acceleration/ Seismic, and Magnetic These are especially suitable for surveillance networks for personnel and vehicles 4.Example: Building and Home Automation ... Hierarchical Networks • Hierarchical Networks 2.4 Network Structure and Hierarchical Networks • Hierarchical Networks WIRELESS SENSOR NETWORKS 3.1 IEEE 1451 and Smart Sensors 3.2 Transducers and Physical... Management 2.4 Network Structure and Hierarchical Networks • Multicast Systems 2.4 Network Structure and Hierarchical Networks • Hierarchical Networks 2.4 Network Structure and Hierarchical Networks... Protocols and Routing Power Management Network Structure and Hierarchical Networks 2.1 Network Topology Mesh networks • Mesh networks:are regularly distributed networks that generally allow transmission