(LiDAR), magnetic sensors, GNSS, differential GPS,
optical cameras, and inertial sensors. The University of
Minnesota’s “Snow Squirrel” received the best score at
the Single-I portion, but Case Western Reserve
University still had a slight lead in the cumulative score.
When the competition wrapped up for the day,
team members, volunteers, and sponsors participated in
the Saint Paul Winter Carnival Grand Day Parade.
Dunwoody College of Technology and corporate
sponsor, Western Plow showcased their vehicles in the
The final day of the competition was a bit chilly
with temperatures dipping down to 15°F for the fourth
and final event. A “Triple-I” snowfield pattern was
configured to represent a residential driveway. This
event was very important amounting to 50% of the
cumulative score. The same fixed and moving obstacles
were present along this course.
Teams were not given any additional time to plow
the snow even though the field was three times the
size, equating to 10m long and 3m wide ( 30 square
meters). The time allotment of 20 minutes became a
challenge for Dunwoody College of Technology’s “Snow
Devils 10002” team, because they needed to set up a
magnetic field border prior to activating their plow.
Their vehicle was very successful in removing snow.
However, the team ran out of time to finish the entire
30 square meters.
The reigning champ and leader at the start of the
day, OTTO XL also experienced challenges as the plow
spun in small circles when it hit the snowfield, and
therefore only removed snow from a corner of the field.
University of Minnesota’s Snow Squirrel team was
extremely successful in plowing a large amount of snow
and avoiding both the stationary and moveable
One of the navigation strategies they used was
programming the robot to stop when something red
appeared in its vision. Team members — not wearing
red — strategically placed themselves in front of
MARQUETTE UNIVERSITY TEAM “ARNOLD.”
CASE WESTERN RESERVES UNIVERSITY TEAM “OTTO XL.”
SERVO 05/06.2018 47