The robot vacuum cleaner
navigates using what Evolution Robotics call the North Star Navigation System.
This system ensures optimal floor coverage by tracking where the unit has been
so that it is does not redo areas that have already been cleaned. Also,
on-board sensors stop the unit from falling off edges or running into raised
rugs or other obstacles.
After the main sweeping or mopping has been
done, the Mint does a final "perimeter sweep" cleaning along
baseboards and the edges of furniture. A number of robot hoover owners have
indicated that the edge cleaning abilities of this robot are very good and that
it manages to clean right up to the baseboards and furniture. When finished the
Mint parks itself at the point in the room where it started. The machine can
even work in the dark as the North Star Navigation System and on-board sensors
don't require light. However it should be noted that if one changes the cloth
during cleaning the unit will lose its place and will have to start over to
ensure it covers the intended area properly.
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