Sensor Networks Past, Current, and Future

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Sensor NetworksPast, Current, and Future

• Rabie A. Ramadan
• Al-Azhar University
• October 23rd , 08

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Talk Outline

• Introduction Computing Evolution
• The Promise of Wireless Sensor Networks
• Wireless Sensor Networks A Closer Look
• WSN Applications
• My Research Interest

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Computing Evolution
We Have Come a Long Way!!
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The Electronic Numerical Integrator and Computer
(ENIAC)? begins in 1938
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Home computer as imagined more than 50 years ago
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The Computer Evolution
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Moores Law

• 1965 prediction by Intel cofounder Gordon
  Moore
• The number of transistors that can be built on
  the same size piece of silicon will double every
  18 months

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(No Transcript)
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Bells Law New computing class every 10 years
log (people per computer)
Streaming Data to/from the Physical World
year
Excerpted from The Mote Revolution Low Power
Wireless Sensor Network, UCB, 2004.
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Ubiquitous Computing A Vision Ahead of its Time
The most profound technologies are those that
disappear. They weave themselves into the fabric
of everyday life until they are
indistinguishable from it. Mark Weiser, 1991
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What is a Sensor?

• A device that converts the physical phenomena
  into electric signal
• A digital data could be extracted

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Sensors

• Heterogeneous vs. Homogenous

WeC
Dot
Rene
Mica
Pluto
Mobile Sensor
Spec
Mica2
Telos
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What is a Sensor Node?
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Wireless Sensor Networks A Closer Look
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What is a sensor Network?
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Sensor Networks Evolution
Wired
Wireless Point-Point
Wireless Mesh
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Why Do We need Sensor Networks?

• Play?

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Sensor Network Applications
Habitat Monitoring
Infrastructure Monitoring
Health Care
Transportation
Rescue Operations
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WSN Design Challenges

• Large scale of deployment
• Limited power to harvest or store
• Harsh environmental conditions
• Node failures
• Dynamic network topology
• Communication failures
• Heterogeneity of nodes
• Unattended operation
• Security

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My Research Areas

• Deployment
• Sensing and Coverage
• Routing
• Security
• Stochastic Sensor networks
• Localization
• Synchronization
• ..

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• Thank you