What Can Wireless Networks Do For Us 1' wireless ad hoc network 2' wireless sensor network

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What Can Wireless Networks Do For Us? 1.
wireless ad hoc network 2. wireless sensor
network

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Cyber Cattle on the Wireless Range
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What Can Ad Hoc Networks Can Do for You?

• Paper Virtual Fences for Controlling Cows
• by Bulter, Corke, Peterson, and Rus
• from Workshop on Applications of Mobile Embedded
  Systems
• (with MobiSys 2004)

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Motivations

• Herding is a very labor intensive activity.
• Animals are rotated frequently between paddocks
  to prevent overgrazing of any one pasture.
• Farmers spend huge amounts of time and money
  fixing and maintaining fences.
• This work the first step toward automatically
  controlling the location of individual animals as
  well as the herd.

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State of the Art

• physical agent
• sheepdog, robot, etc.
• stimulation device
• simple collar which provides an electric shock
  when it is in close proximity to a buried
  perimeter wire

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Approach of the Authors (Dartmouth College)

• virtual fence
• smart collar for cows
• GPS unit, Zaurus PDA, wireless networking, and
  sound amplifier
• sound stimulus
• whose volume is proportionate to the distance
  from the boundary.
• such as roaring tiger, barking dog, hissing
  snake.
• to repel from obstacles or
• wireless Ad Hoc Network
• formed by wireless devices with multi-hop
  communication capability.

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Smart Collar
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More Info from Web
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• Posts and barbed wire are part of the scenery on
  most ranches. But satellite technology is making
  it possible to guide animals over rangeland with
  electronically generated cues (??) rather than
  traditional fences and cattle drives.

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• On the 300-square-mile Jornada Experimental Range
  near Las Cruces, New Mexico, technicians Rob
  Dunlap (left) and John Smith round up cattle the
  time-honored way. High-tech equipment may make
  roundups easier in the future.

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• Craig Hale (left), of Future Segue, and animal
  scientist Dean Anderson examine the prototype
  virtual fence device they invented. Audio cues
  generated from the device tell the cattle which
  way to move.

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• Technician Roy Libeau (left) and Anderson place a
  neck saddle containing the prototype virtual
  fence system on a cow.

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• The prototype virtual fence device is shown here
  as a neck saddle. Future versions may be reduced
  to the size of an ear tag or smaller.

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• Cattle and sheep grazing together in a "flerd."
  The animals are bonded socially, so they remain
  together.

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• Gary Rayson (left), an associate professor at New
  Mexico State University, and Anderson use
  fluorometry to rapidly determine diet composition
  of free-ranging herbivores.

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Conclusions

• physical informaiton location, sensing data
• wireless connectivity (multi-hop)
• multi-discipline research (need to work with
  farmer, biologist, etc.)

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What Can Wireless Sensor Networks Do for Us?
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• Monitoring Volcanic Eruptions with a Wireless
  Sensor Network (ETH)

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• Wind Monitoring (Univ. MN)

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Factory Automation
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• WSN architecture

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Definition of WSN

• Wireless sensor network is
• Sense
• Compute
• Communicate
• Actuate

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a corollary of Moores Law
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Goal of Wireless Sensor Networks

• Embedding wireless networking and computing in
  sensors with low cost.

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WSN Opportunity of Taiwan

• IC design
• Component, devices manufacturing
• computing and communication components
• Potential Services
• elderly care
• home and community security
• intelligent transportation system