|
LAAS Laser
Rangefinger
ROVER
systems used for special field applications are today
able to recognize obstacles through the combination of a
stereo vision system and 3D scanning laser technology.
After studying
various sensors, used for robotic vision and especially
for terrain modeling and obstacle detection the
Franco-Italian group working on the project
"Concordia" developed in collaboration with
Carnegie Mellon University a vision system combining
stereo camera visualization with a laser scanning the
ground in front of the ROVER Robot. Tested in the
Antartica on the NOMAD robot (Se picture) the system
showed first positive results.
Primary the
idea is based on the use of a laser
rangefinder mounted on the stereo camera mast is used by
the navigation system to detect obstacles in the robot's
path. It scans several meters in front of the robot to
find features that the stereo cameras may miss.
The laser source
used for the experiment has been provided by RIEGEL and
showed perfect functionality, even under icy conditions.
"I
operated your laser in very bad weather conditions, the
7 of november specificly (-25ƒC, speed >15 knots,
with blowing snow) and everything was right related to
the laser hardware" (Nicolas Vandapel / LAAS)
|
 |
|
|
Robotic
System NOMAD
|
.. |
|
Photo
LAAS-CNRS
|
|
The
robotic system NOMAD is a four wheel ROVER
designed to traverse planetary analogous
terrain. Fully deployed, it is 2.4 x 2.4 x 2.4
meters, and weights 725 kg. Powered by a
Gasoline generator, it travels up to 50
centimeters per second and has the capability to
traverse over most large obstacles. In the
special conditions given in the Antartic, the NOMAD
has been equipped with studded tires increasing
the ice/tire friction and a GPS system for
self-detection of position and directions.
Article Reference :
002068
|
Product News
> Laser Technology