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Team Name:
Project Title:
LSV2 (Large Scale Vehicle)
Autonomous Battery Charger
Team Members:
Branden Carpenter
Jon Stoker
Maggie Richardson
Wayne Romine
EE
CS
EE
EE
Senior
Senior
Senior
Senior
Our Sponsor
Initial Specifications
• Must remotely access the
battery chargers
– Including all displayed values
such as:
• Fault Indicators
• Displayed values for Current
and Voltage
– As well as providing control
capability:
• Ability to change voltage and
current levels
• Have an emergency stop
function
• Graphical user interface
mush be easy to
understand/use
_
• Remote control function
must have a PC control
option
– Charging algorithm will be
implemented in later project
– Separate control unit will be
able to implement the
charging algorithm
• Unit will also act as a backup if
there is a computer failure
• Design must use the current
control board installed in
the charging units
– Units have a local remote
switch that utilizes a PCB
housed inside the charger
Preliminary Results
• From initial research the RS-485
pin connection on the PCB inside
the charging unit will likely be the
point of control.
• A microcontroller will need to be
employed to display and control
the charging units remotely.
• A separate box will be created to
handle the control and display of
information.
– PC control will be added at a later
time
– Although this box should be able to
operate indecently, connections for
the PC will be an important
element to our design
• A optimum charging profile was
designed for a previous Senior
Design project.
• This profile will be used to create
a charging algorithm that will
automate the charging process.
• Commercial embedded
controllers exist but our team
should be able to design a more
economical solution for our
client.
• The Client presently has a system
that displays the battery charging
level. Connection from that
system will provide a feedback
loop for the charging algorithm
implemented via a PC.
Problem Statement
•
•
•
•
•
•
•
Presently a battery technician monitors screen displaying the voltage and current
levels being sensed in the seven battery strings comprising the LSV2 battery bank.
Once a condition requiring action is reached, the technician must leave the
computer workstation and adjust analog knobs located on the front panel of the
charging units. These units are installed in a different location of the moorage
facility.
Once the alteration is manually set on the charging unit, the technician returns to
the workstation to check that the desired effect begins to take place.
This process is repeated for each of the seven charging units at specific points in
the charging process.
The optimized profile could be better implemented if the charging profile of each
battery sting are controlled autonomously.
Our team proposes to design a configuration that allows the chargers be controlled
remotely, specifically at the workstation that monitors the charge.
With this capability it is then possible to automate the entire process and control it
from any location connected to the monitoring workstation.
Images of the
USS Cutthroat
Initial Controller Conceptual Design
Charger #1
C:
#2
#3
#4
#5
#6
#7
V:
Fault Indicators
Charger
#
Input Current
0000.00
UP
DN
Input Voltage
Select
charger
0000.00
UP
DN
Local /PC Toggle Switch
Enter Current
Input
current
value
Enter Voltage
Input
voltage
value