09-05-2014, 10:37 AM
Smart Dust
Smart Dust.ppt (Size: 616 KB / Downloads: 83)
What is Smart Dust?
A tiny dust size device with extra-ordinary capabilities.
Often called micro electro-mechanical sensors
Combines sensing, computing, wireless communication capabilities and autonomous power supply within volume of only few millimeters.
Useful in monitoring real world phenomenon without disturbing the original process.
Architecture
A single Smart Dust mote has:
a semiconductor laser diode and MEMS beam steering mirror for active optical transmission
a MEMS corner cube retro-reflector for passive optical transmission
an optical receiver
a signal processing and control circuitry
a power source based on thick-film batteries and solar cells.
Corner Cube Retro-reflector(CCR)
Comprises of three mutually perpendicular mirrors of gold-coated poly-silicon.
Has the property that any incident ray of light is reflected back to the source provided that it is incident within a certain range of angles centered about the cube’s body diagonal.
Challenges
It is difficult to fit all these devices in a small Smart Dust both size wise and Energy wise.
With devices so small, batteries present a massive addition of weight.
Conclusion
There are many ongoing researches on Smart Dust, the main purpose of these researches is to make Smart Dust mote as small as possible and to make it available at as low price as possible. Soon we will see Smart Dust being used in varied application from all spans of life.
Smart Dust.ppt (Size: 616 KB / Downloads: 83)
What is Smart Dust?
A tiny dust size device with extra-ordinary capabilities.
Often called micro electro-mechanical sensors
Combines sensing, computing, wireless communication capabilities and autonomous power supply within volume of only few millimeters.
Useful in monitoring real world phenomenon without disturbing the original process.
Architecture
A single Smart Dust mote has:
a semiconductor laser diode and MEMS beam steering mirror for active optical transmission
a MEMS corner cube retro-reflector for passive optical transmission
an optical receiver
a signal processing and control circuitry
a power source based on thick-film batteries and solar cells.
Corner Cube Retro-reflector(CCR)
Comprises of three mutually perpendicular mirrors of gold-coated poly-silicon.
Has the property that any incident ray of light is reflected back to the source provided that it is incident within a certain range of angles centered about the cube’s body diagonal.
Challenges
It is difficult to fit all these devices in a small Smart Dust both size wise and Energy wise.
With devices so small, batteries present a massive addition of weight.
Conclusion
There are many ongoing researches on Smart Dust, the main purpose of these researches is to make Smart Dust mote as small as possible and to make it available at as low price as possible. Soon we will see Smart Dust being used in varied application from all spans of life.