Wireless Communication System

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Wireless Communication System Powered By Docstoc
         Will Abbott
    Lauren Hasson
   Mordejai Burstein
       Isik Gungen
Design Problem
   The AUV lacks ability to communicate directly with robotics
    team during testing stage of competition.
   The AUV team challenged our group to design a wireless
    communication system that enables team to debug the
    vehicle during the testing stage while the vehicle underwater.
   The AUV team imposed the following design constraints:
       The design must not impede the motion of the AUV.
       The design must maintain a waterproof casing on the AUV.
       The design must interface with existing communication systems
        on the AUV (i.e., not alter any current standards).
Design Solution

   Create a tethered antenna buoy for the AUV.
The following assumptions were made:
     The AUV has a working physical Ethernet connection as well as
      the configured protocols to allow communication over that
     The Ethernet connection from the AUV will provide 802 standard
      Power-Over-Ethernet in order to supply the networking hardware
      in the buoy.
     The existing communication system on the AUV works over a
      physical land-line.
We can view the AUV as a black box with a functioning data-out
Goal: Communicate anything transmitted from the AUV port
  over the wireless connection to another system.
Rationale: System Level
   Degradation of Signal Through Water
       EM transmission unfeasible for depths more than a few inches
       Extend wireless antenna above water to prevent degradation
   Flexibility
       Pipe and tether need to be flexible, resistant to tangling, and non-
        obtrusive to testing environment
           Short tether: prevents tangling
           Long tether: facilitates diving at greater depths
       Gate clearance of 3”, maximum buoy height of 2”
   Transparency
       Connection between data center and AUV fully transparent to
        both systems
       Simplifies integration with AUV
Rationale: Component Level
   Waterproof Tether
       Must be waterproof
       Modular Design
           Bulgin IP68 Buccaneer Ethernet Connectors and Cable
           Simple connect/disconnect while maintaining waterproof seal
   Wireless Bridge and Power
       Must have own source of power
       UPDATE THIS HERE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
   Floating Buoy
       No leaks
       Transmitter must remain above water
       Direct access to stored bridge
Testing and Validation
   Testing of Wireless Bridge (stand-alone)
   Testing of Wireless Bridge Connected to AUV
   Testing of Bridge Floatation Device, Waterproof Connections
   Testing of Completely Integrated System
Schedule and Budget
   Design Achievements
       Cost-Effective
       Modular, Extendable, Flexible
       Easy-to-Use
       Met all expectations
   Expect the unexpected
       Back-ordered parts
       Incorrect measurements
       Miscommunications
Future Work

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