Wireless Communication System

1
Wireless CommunicationSystem

• Will Abbott
• Lauren Hasson
• Mordejai Burstein
• Isik Gungen

2
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).

3
Design Solution

• Create a tethered antenna buoy for the AUV.

4
Assumptions

• The following assumptions were made
• The AUV has a working physical Ethernet
  connection as well as the configured protocols to
  allow communication over that connection.
• 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 connection.
• Goal Communicate anything transmitted from the
  AUV port over the wireless connection to another
  system.

5
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

6
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

7
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

8
Schedule and Budget
9
Conclusions

• Design Achievements
• Cost-Effective
• Modular, Extendable, Flexible
• Easy-to-Use
• Met all expectations
• Expect the unexpected
• Back-ordered parts
• Incorrect measurements
• Miscommunications

10
Future Work