fischertechnik ROBOTICS TXT Discovery Set Manual page 40

TXT
Discovery Set
Task 3:
Which camera sensor element does the program use to
evaluate stripes on the sideboards?
Solution:
The "line" sensor element is used. In contrast to the trail searcher, three
line sensors are located from top to bottom in the camera window to
detect the three horizontal stripes on the sideboards. The robot uses
their width to calculate where it is presently located and where it needs
to move to.
Moreover the stripes allow it to recognize when it is too close to the
sideboard and to stop before colliding with the sideboard.
Task 4:
Two "Exclusion" sensor fields are present in the ROBO Pro
camera window for this robot. Can you imagine what these
are for?
Solution: These sensor fields supplement the sensor field for ball
recognition. The exclusion areas are not evaluated when looking for the
ball. This can be helpful, when objects such as the phototransistor for
the soccer robot are located in the image and could be mistaken for the
ball.
ROBOTICS
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