1. Introduction to Wireless Sensor Networks 20 January 2005

3. Confusion of Terms Berkeley Mote ZigBee Directed Diffusion Localization Rumor Routing Crossbow MAC Protocols Self-Organizing Networks Tiny-OS Tiny-DB Power Management RSSI ISM Band RFID Smart Dust ?

7. Sensor Network Gateway Server Internet Sensor field Interface electronics, radio and microcontroller Soil moisture probe Mote Antenna Communications barrier

8. Sensor Network Gateway Server Internet Sensor field Watershed

10. Wireless Revolution Boston central telephone station at 40 Pearl Street after the blizzard of 1881

11. Wireless Revolution TI REGENCY TR-1, 1955, $450 (today) 1 st Transistor, 1947 Sony TR-610, 1958 Integrated Circuit, 1963 1 st Integrated Circuit, ~1958 Today ~$5

12. Wireless Revolution Size reduction of cellular telephones

13. Micro-Electro-Mechanical-Systems (MEMS) ~ 1mm

14. Micro-Electro-Mechanical-Systems (MEMS) ~ 1mm

15. Small Sensors ~ 5 mm Sensor uses electrochemical and photonic properties to perform bioanalysis

16. RF MEMS MEMS Filters: Qs of 98,000 in vacuum, very small Conventional LC Filters - Qs of 100-200, significant board space

17. Transceiver

18. Computer Revolution 0.5 oz, 2.25 x 1.25 x 0.25 inch 25 lb, 19.5 x 5.5 x 16 inch ~14 mW ~ 64 W ~ $35 ~ $6K (today) 512 KB Flash 160 KB Floppies 128 KB RAM 16-256 KB RAM 4 MHz 4.77 MHz MICAZ Mote (2005) Original IBM PC (1981)

19. Sensor Network Gateway Server Internet +

20. Next Time: Telemetry vs. Sensor Networks