1. SMART DUST SUBMITTED BY S SRIJITH

2. INTRODUCTION What is Smart Dust? What is Smart Dust? What are its components? What are its components? How it is implemented? How it is implemented? What are its applications? What are its applications? What are its advantages? What are its advantages?

3. What is smart dust? Smart Dust is a self-contained network of tiny motes each having the capability of sensing and monitoring the environment conditions. Smart Dust is a self-contained network of tiny motes each having the capability of sensing and monitoring the environment conditions. First devoloped by professor Kris Pister at the University of California, Berkeley First devoloped by professor Kris Pister at the University of California, Berkeley

4. Motes They are tiny particles which will be around the size of a grain of sand They are tiny particles which will be around the size of a grain of sand They contain sensors which have the computational capability, power supply, programmable microprocessor, analog circuitry They contain sensors which have the computational capability, power supply, programmable microprocessor, analog circuitry A network of these motes leads to SMART DUST project A network of these motes leads to SMART DUST project Can communicate with a base station or with other motes depending on the application Can communicate with a base station or with other motes depending on the application

5. Base Station Transceiver It is used to retrieve the data stored by the motes It is used to retrieve the data stored by the motes It consists of a laser source and a receiver It consists of a laser source and a receiver Enables communication with the motes Enables communication with the motes

7. Requirements Power Power Sensors Sensors Efficient Communication Efficient Communication

8. Components Sensors Sensors Corner Cube Retro-reflector (Passive Transmitter) Corner Cube Retro-reflector (Passive Transmitter) Active Transmitter Active Transmitter Photo detector Photo detector Solar cell, DSP, Analog I/O, Power Capacitor, Thick Film Battery Solar cell, DSP, Analog I/O, Power Capacitor, Thick Film Battery

10. Implementation Sensors monitors the atmosphere Sensors monitors the atmosphere Communication can be of two types: Communication can be of two types: Active Communication and Passive Communication

11. Active Communication It consists of an onboard laser, collimating lens, beam steering mirror It consists of an onboard laser, collimating lens, beam steering mirror Active Communication can be used for mote-to- mote communication if required Active Communication can be used for mote-to- mote communication if required High power Density but high power consumption High power Density but high power consumption

12. Passive Communication Corner Cube Retro-Reflector Corner Cube Retro-Reflector Base Station with a Receiver and a laser source Base Station with a Receiver and a laser source Enables Bi-directional Communication Enables Bi-directional Communication Line of Sight required Line of Sight required

13. Implementation ( Cont d … ) It consists of a photo detector in order to detect the signal and receive it It consists of a photo detector in order to detect the signal and receive it The DSP (digital signal processor) is used to process signals received. The DSP (digital signal processor) is used to process signals received.

14. Power It consists of a lithium battery It consists of a lithium battery Key constraint in the design of a mote Key constraint in the design of a mote The battery and Capacitor can store upto1J/cubic mm and 10mJ/ cubic mm The battery and Capacitor can store upto1J/cubic mm and 10mJ/ cubic mm It contains a timer which monitors the operation of a mote It contains a timer which monitors the operation of a mote

15. Applications Military Applications Medical Applications Climate monitoring Virtual Keyboard Structure Maintenance Circulatory Net

16. Advantages Good Functionality Good Functionality Small Size Small Size Better Connectivity Better Connectivity Low Cost Low Cost

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