صفحه 1:
Khatam Al-Anbia University of Technology, Behbahan
Sensor networks
October 1400
Professor: Dr. Mehdi Askari
لح دانشکده فنی و مهندسی امام حسین (ع). گروه مهندسی برق- الکترونیک
صفحه 2:
:لاط ت92
Mohammad Hossein
۱3-95
WTS SSE 5015
9
Orientation of
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داتشکده فنی و مهندسی امام حسین (ع). گروه مهندسی برق- الکترونیک
صفحه 3:
Smart Dust(Tiny sensors)- The Little
صفحه 4:
What is
Smart Dust?
Q “Smart dust" devices are tiny wireless
microelectromechanical sensors (MEMS) that can
detect everything from light to vibrations.
O Nodes in Smart Dust are called Motes. These "motes"
contain sensors, computing
Q circuits, bidirectional wireless communications
technology and a power supply integrated on a tiny
dust size-device.
ed دانشکده فنی و مهندسی امام حسین (ع). گروه مهندسی برق - الکترونیک
صفحه 5:
Basic Concept Behind Smart Dust
For the next disruptive technology: think dust. No, not small grains of
sand, soot or dirt but similarly sized particles that have a brain.
Transmits information like temperature, humidity, light ,vibrations,
surface pressures, etc.
Smart sensors relay signals back to a command computer.
The motes' hardware platform uses Processor(MPR). These are battery-
powered devices where MTS (sensors) and MDA (data card sensors)
work directly with the Mote Processor.
صفحه 6:
How it
works?
+ Smart Dust is a network of ‘motes’, identical or
similar tiny computers consisting of four
miniaturized components:
+ Ambient sensor
+ Wireless Transmitter
٠ CPU
+ Power Source
صفحه 7:
* Digital circuitry Technology
* MEMS technology
+ RF-Wireless Communication Used
Control Hub
صفحه 8:
Digital circuitry
© Micro electronic integrated circuits can be
thought of as the “brains” of a system.
* Because MEMS devices are manufactured using
batch fabrication techniques similar to those
used for integrated circuits, unprecedented levels
of functionality, reliability, and sophistication can
be placed on asmall silicon chip at a relatively low
cost.
لح دانشکده فنی و مهندسی امام حسین (ع). گروه مهندسی برق- الکترونیک
صفحه 9:
MEMS
Technology
+ Micro-Electro-Mechanical Systems (MEMS) is the
integration of mechanical elements, sensors,
actuators, and electronics on a common silicon
substrate.
٠ While the electronics are fabricated using
integrated circuit (IC) the micro mechanical
components are fabricated using compatible
“micromachining” processes.
صفحه 10:
Wireless
Communication
+ Awireless communication system is
required
for sending and rec
transfer rate of 1 Kbps.
data with data وا
+ The devices for communication are
subjected
to size and power constraints.
+ It must support bi-directional
communication between a central
transceiver
and up to 1000 dust motes ey
سس گروه مهندسی برق- الکترونیک
صفحه 11:
Multi-functional Mote
صفحه 12:
Optical Communication
“Active
High power laser source
*Transmission of modulated laser
beam
*Passive
«MEMS Corner Cube Reflector
Emit modulated ambient light
Extremely low power
لح دانشکده فنی و مهندسی امام حسین (ع). گروه مهندسی برق- الکترونیک
صفحه 13:
The Making of Smart Dust
Porous Si
2
متت
Etch Modify
|e
hydrophobic
>
~~ 0
للم ۳ و
jonicate 619256:
<< ام_ hydrophilic. oxidize
Smart Dust Freestanding Double Mirror
Porous Si
صفحه 14:
Smart Dust in Real World
e IT Sector
e Defense Application
٠ Medical Application
e Environment Monitoring
داتشکده فنی و مهندسی امام حسین (ع). گروه مهندسی برق- الکترونیک
صفحه 15:
IT sector
+ Accelerometer
containing Smart Dust
* MEMS microphones in
portable devices
* Monitor speed and
Volume of traffic to
avoid
recurring traffic jams.
+ Also used in modern
cars for a large number
of purposes including
airbag deployment in
صفحه 16:
Defense Application
٠ The motes used for
defense purpose of
consists of magnetometer,
a vibration sensor and a
GPS receiver.
* Spread on the battlefield
by moving vehicles or
soldiers with modified
binoculars.
+ Also used to monitor
critical parts of aircrafts
and other war vehicles.
صفحه 17:
۱۳6۷۱۵0۵۲ ۲
Medical
Application
٠ Enter human bodies and check for
physiological
problems.
* Relay information about cancerous cells.
*Doctors will be able to monitor health status
and
curing situations of patients through smart
dust.
*Surgery will be more and more efficient and
reliable as it will provide an extra arm for
surgeons
صفحه 18:
ironmental Monitoring
¢ In Environment
Conservation. اير 0 ۳ tel - 1
* Detect hazardous 2
chemical and
biological agents.
* Monitoring
nature of animals.
* Measuring
Temperature ,
humidity, etc.
لح دانشکده فنی و مهندسی امام حسین (ع). گروه مهندسی برق- الکترونیک
صفحه 19:
Major Disadvantages
* Relative high power consumption.
* Hence can be used only for a short duration
of time.
* Components like active beam-steering
mechanism makes the design of the dust mote
more complicated.
* It is difficult to fit all the components in a
small Smart dust both in terms of Size and
Energy.
صفحه 20:
Impact
on
Society
* ‘Smart dust’ is receiving huge investment around
the world and it could be used to create a safer
and more efficient food and agriculture system.
* Smart Dust’s development, use, and employment
in the future, further research is necessary,
specifically in the areas of intelligence analysis and
dependence.
* Social aspects- it can help in saving a lot of loss
of power
in light and climatic control of bui
|63 6 کروهمهندسی برق- le) فني و مهندسی امام حسیی hsb ES
صفحه 21:
Tidal waves of
2
changes in future
* Large Scale Processing &
Distribution.
* To bring multi-hop network ۱ ۳۳
topology. nde @
* Data Fusion. 3 9 é
+ Autonomous Network ae ‘: 3
Configuration. گرم و
۰ Researches on reducing
the size and weight of the
latest generation motes.
* Trying to make it so light that it
لح دانشکده فنی و مهندسی امام حسین (ع). گروه مهندسی برق- الکترونیک
صفحه 22:
Conclusion
Many ong rese
size of the prese
generation mote
as small as possible and to
make it
And then soon we will see
art Dust
لح داتشکده فنی و مهندسی امام حسین (ع): گروه یندسی 006 ۱۷ ۳ مک being