无线网络wirelesssensornetworks08.ppt

Wireless Sensor Networks 巨型机说：“我认为全球大概只需要五台计算机就够了”； PC机说：“每个家庭的桌面上都应该有一台电脑”; Pocket PC说：“太大了，应该每人口袋里放一台”; WSN说：“每粒沙子都应该是一台计算机”。 Outline General Comments Wireless Sensor Network Applications Architecture of WSN Overview of Sensor Hardware Characteristic of WSN Our Work Outline General Comments Wireless Sensor Network Applications Architecture of WSN Overview of Sensor Hardware Characteristic of WSN Hot Issues Our Work Sensor network: A new research hotspot Faster, Smaller, Numerous Moore’s Law “Stuff” (transistors, etc) doubling every 1-2 years Bell’s Law New computing class every 10 years What’s are Wireless Sensor Networks Wireless networks are usually composed of small, low-cost devices that communicate wirelessly and have the capabilities of Processing, Sensing and Storing The purpose is to measure different physical parameters in a given environment, in order to characterize its properties, or to take decisions depending on these measurements. Outline General Comments Wireless Sensor Network Applications Architecture of WSN Overview of Sensor Hardware Characteristic of WSN Hot Issues OUR WORK Wireless Sensor Network Applications Military Applications Environmental Applications Health Applications Home Applications Industrial Applications Other Commercial Applications Military Applications enemy tracking, battlefield surveillance target detection and classification An Example:Counter Sniper System 民用领域 科技领域 Industrial Applications Outline General Comments Wireless Sensor Network Applications Architecture of WSN Overview of Sensor Hardware Characteristic of WSN Hot Issues OUR WORK Architecture of WSN Sensor nodes are scattered in a sensor field(object field) Sensor nodes can self organize to form a sensor network Data are collected by these scattered nodes and routed back to the sink in a multi-hop way The user communicate with the sink via Internet Architecture of WSN(contd) nodes are still stationary. multiple, mobile sinks defined as users. sinks may collect