SensorNets-ZigBee

SensorNets-ZigBee - CEWIT - Center of Excellence in...

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Unformatted text preview: CEWIT - Center of Excellence in Wireless and Information Technology Sensor Networks and ZigBee (802.15.4) CEWIT - Center of Excellence in Wireless and Information Technology Enabling Technologies Embedded Networked Sensing Control system w/ Small form factor Untethered nodes Exploit collaborative Sensing, action Tightly coupled to physical world Embed numerous distributed devices to monitor and interact with physical world Network devices to coordinate and perform higher-level tasks Temperature, pressure, water, humidity, explosives, air quality CEWIT - Center of Excellence in Wireless and Information Technology Sensors Passive elements: seismic, acoustic, infrared, strain, salinity, humidity, temperature, etc. Passive Arrays: imagers (visible, IR), biochemical Active sensors: radar, sonar High energy, in contrast to passive elements Technology trend: use of IC technology for increased robustness, lower cost, smaller size COTS adequate in many of these domains; work remains to be done in biochemical CEWIT - Center of Excellence in Wireless and Information Technology Some Networked Sensor Node Developments LWIM III UCLA, 1996 Geophone, RFM radio, PIC, star network AWAIRS I UCLA/RSC 1998 Geophone, DS/SS Radio, strongARM, Multi-hop networks Processor WINS NG 2.0 Sensoria, 2001 Node development platform; multi- sensor, dual radio, Linux on SH4, Preprocessor, GPS UCB Mote, 2000 4 Mhz, 4K Ram 512K EEProm, 128K code, CSMA half-duplex RFM radio CEWIT - Center of Excellence in Wireless and Information Technology Sensor Node Energy Roadmap 2000 2000 2002 2002 2004 2004 10,000 10,000 1,000 1,000 100 100 10 10 1 1 .1 .1 Average Power (mW) Deployed (5W) PAC/C Baseline (.5W) (50 mW) (1mW) Rehosting to Low Rehosting to Low Power COTS Power COTS (10x) (10x)-System-On-Chip-System-On-Chip-Adv Power -Adv Power Management Management Algorithms (50x) Algorithms (50x) Source: ISI & DARPA PAC/C Program CEWIT - Center of Excellence in Wireless and Information Technology Transportation and Urban Monitoring Disaster Response CEWIT - Center of Excellence in Wireless and Information Technology The 802 Wireless Space Source: http://www.zigbee.org/en/resources/ CEWIT - Center of Excellence in Wireless and Information Technology Where Does ZigBee Fit? Range Peak Data Rate Closer Farther Slower Faster UWB Wireless Data Applications Sources: WRH + Co Wireless Video Applications IrDA 802.11g 802.11b 802.11a 2.5G/3G Bluetooth ZigBee Wireless Sensors Wireless Networking Wi-Fi CEWIT - Center of Excellence in Wireless and Information Technology ZigBee Aims Low Low data rate Low power consumption Small packet devices CEWIT - Center of Excellence in Wireless and Information Technology ZigBee and Other Wireless Technologies Source: http://www.zigbee.org/en/about/faq.asp CEWIT - Center of Excellence in Wireless and Information Technology ZigBee Mission The ZigBee Alliance is an association of...
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SensorNets-ZigBee - CEWIT - Center of Excellence in...

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