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).
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
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
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”
Connection between data center and AUV fully transparent to
Simplifies integration with AUV
Rationale: Component Level
Must be waterproof
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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
Modular, Extendable, Flexible
Met all expectations
Expect the unexpected