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What is Smart Dust Technology
Smart dust is a tiny dust size device with extra-ordinary capabilities. Smart dust combines sensing, computing, wireless communication
capabilities. smart dust applications and smart dust core architecture | free ppt download
× What is Smart Dust
× How its work
× History of smart dust.
× Smart Dust Mote
× Smart Dust Components
× Measurement , characteristic, working of smart dust
× Communication with Smart Dust
Smart dust is a tiny dust size device with extraordinary capabilities.
Smart dust combines sensing, computing, wireless communication
Have power supply within volume of only few millimeters and that too
at low cost.
These devices are proposed to be so small and light in weight that they
can remain suspended in the environment like an ordinary dust particle.What is Smart Dust
"Smart dust" devices are tiny wireless micro electro
mechanical sensors (MEMS) that can detect everything
from light to vibrations.
Nodes in Smart Dust are called Motes.
These "motes" contain sensors, computing circuits,
bidirectional wireless communications technology and a
power supply integrated on a tiny dust sizedevice.History of Smart Dust
× Smart dust was invented in 2001 by Kristopher S. J. Pister, who is an electrical
engineering and computer science professor for the University of California
× The DARPA (NASA) has been funding Smart Dust research heavily seeing
virtually limitless applications in the sphere of modern warfare.
× Kristofer S. J. PisterMote its operation
Smart dust device is run by
It read the data coming
from sensors and stores in
SRAM.Operation of mote
The microcontroller will use the corner cube retro reflector (ccr) or
laser to transmit sensor data or a message to a base station or another
This allows the user to change the behavior of the mote remotely.
The laser diode contains the onboard laser which sends signals to the
base station by blinking on and off.
The corner cube retro reflector, transmits information just by moving
a mirror and thus changing the reflection of a laser beam from the
base station.Making of Smart Dust
A single Smart Dust mote has:
× A semiconductor laser diode and MEMS beam
steering mirror for active optical transmission.
× A MEMS corner cube retroreflector for passive
× An optical receiver.
× A signal processing and control circuitry.
× A power source based on thickfilm batteries and
solar cells.Architecture Smart dust componentMeasurement of Smart Dust
These are made by “Hitachi”.
They measure only
“.15 × .15” mm each and have
Sometimes called “smart
dust” as they can be sprayed
on us and absorbed or taken
in foods, drinks and even
injected.Working of Smart Dust
× Primary constraint of smart dust
× Most of the time mote if off with
only timers running.
× Run by microcontroller.
× Determines the task performed
by the mote.
× Controls power.
× When a timer expires, it powers
mote to carry out a job, then
powers off. Smart Dust Device
.Characteristics of Smart Dust
It has one week
functionality it has
It has 20 meter
continuous Current motes are
radio, the communication
operation, 2 years about 5mm
with 1 duty
controller, and the
battery.Key Features of these electronic particles
Survive for extended amount of time
Process Sensor Data and Communicate
To Interface to the environment
To glue the pieces of informationPower
Low capacity per
unit of mass and
Not really so
• Core and variety of different functions
• Flash , SRAM , E2PROM
• GPIO , ADC , PWM ,Comparator
• Embedded serial Buses
• Ex: Microcontrollers Atmel , Microchip,
Microprocessors Intel StrongArms
• Not Traditional Style Of programming
• Hardware Descriptive Languages
• Faster, Low Power, Reconfigurable
• Ex: Xilix, AtmelSENSOR
Radio Frequency Optical transmission
a) Passive Laser
b) Active Laser
c) Fiber Optic
Communication Radio Frequency Transmission
× Based on the generation, propagation and detection of electromagnetic
waves with a frequency range from tens of kHz to hundreds of GHz.
× Multiplexing techniques: time, frequency or codedivision
× Their use leads to modulation, band pass filtering, demodulation
circuitry, and additional circuitry, all of which needs to be
considered, based on power consumption. Problems with RF communication
× Large size of antenna.
× RF communication can only be achieved by using time,
frequency or code division.
× TDMA, FDMA, and CDMA have their own complications. Passive Laser Based communication
Downlink communication (BTS to dust) the base station points a
modulated laser beam at a node . Dust uses a simple optical
receiver to decode the incoming message
Uplink communication (dust to BTS) the base station points an un
modulated laser beam at a node, which in turn modulates and
reflects back the beam to the BTS Active Laser Based communication
× Has a semiconductor laser, a collimating lens and a beamsteering
× Uses an activesteered laserdiode based transmitter to send a
collimated laser beam to a base station .
× Suitable for peertopeer comm.., provided there exist a line of sight
path between the motes.Fiber Optic communication
× Employs semiconductor laser,
fiber cable and diode receiver to
generate, transfer and detect the
× Similar to passive optical
× Relatively small size of the
optical transceiver is employed
with lowpower operation.
× CCR employed on each Dust
mote to modulate uplink data to
• Enter human bodies and check for
• Relay information about cancerous
• Biomedical application – Artificial
× Environmental protection
monitoring of pollution).Virtual Keyboard
Monitoring activities in
accompany soldiers and
alert them to any poisons
or dangerous biological
substances in the air.
• MEMS microphones in
• Monitor speed and
Volume of traffic to avoid
recurring traffic jams.Major Challenges
As the devices are
so small, batteries
present a massive
addition of weight.
It is difficult to fit all
these devices in a
small Smart Dust
both size wise and
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.Thanks
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