Overmax X-bee fold one Manual De Usuario página 29

Optical Flow mode
In this mode, the drone does not use GPS to keep its position. If GPS signal is lost and the drone:
1.
is at the height of max. 3 meters: Optical Flow mode will be activated (more about this
mode in the chapter below).
2.
is at the height of more than 3 meters: the drone will keep its altitude with the use of
built-in altimeter. This mode is not precise, you need to have experience in operating
the drone to use it.
Optical Flow mode
The drone is equipped with a vision system which allows effective control with weak GPS signal.
Due to the nature of its operation, it must be used mainly in areas of very poor GPS coverage. To
set the position, this mode uses an additional built-in camera (marked as 7 in fig. 1), and proves
to be most effective at the height of max. 3 meters.
There are a few factors which influence the quality of vision system. If some of them fail, the
mode based on vision will deactivate and the drone will switch into constant altitude mode.
You should remain highly careful during the following:
a.
fast flight at the height of up to 0,5m,
b.
flight above uniform-color surfaces,
c.
flight above spaces which reflect light,
d.
flight above water or transparent objects,
e.
flight above moving elements (e.g. crowd of people),
f.
flight above spaces in which light fluctuates,
g.
flight above extremely bright or very dark surfaces,
h.
flight above dirty surfaces,
i.
flight above surfaces with recurring pattern (e.g. above cobblestone path),
j.
flight above objects inclined at the angle of more than 30 degrees,
If the drone is only a meter above the ground, the speed must not be higher than 5m/s, in turn at the
height of 2 meters above the ground – must not be higher than 14m/s.
•
Keep sensors clean.
•
This system works properly only if the drone is at the maximum height of 3m.
•
Fly in properly illuminated areas above elements with clear textures so that sensors of the
drone can properly collect information about the position of the product.
•
The system may not work properly when flying above water, when illumination is poor or
above uniform-structure surfaces.
•
In dark areas – turn on additional drone illumination (at the bottom).
EN