How It Works - EINHELL FREELEXO CAM Originalbetriebsanleitung

5.1 How it works

Follow the operating instructions carefully in order
to ensure that the robot lawn mower works cor-
rectly and safely.
The robot lawn mower chooses its direction on
a random basis. The entire garden gets mowed
by the robot lawn mower reaching all areas that
are not blocked off by boundaries and obstacles.
When the robot lawn mower discovers that it
has reached a lawn boundary or recognizes an
obstacle, it will change its direction and mow in
a diff erent random direction. Using sensors the
robot lawn mower can distinguish between obsta-
cles and lawn areas, enabling it to move freely
within its work area.
The robot lawn mower has a camera unit which
generates and processes images of the area lying
ahead. On this basis the area lying ahead is ex-
amined as to whether it is an area for mowing or
a lawn boundary or an obstacle. If the area lying
ahead is assessed as being an area for mowing,
the robot lawn mower will move straight ahead
with the mower unit activated. If the area lying
ahead is assessed as being a lawn boundary
or an obstacle, the robot lawn mower will stop,
check again for an area for mowing and continue
mowing in a random direction. The area for mo-
wing must be checked and adapted carefully so
that the robot lawn mower has enough room to re-
cognize where it ends. The lawn boundaries must
be clearly defi ned so that the robot lawn mower
can recognize them within its reaction time.
The purpose of the laid guide cable (24) is to get
the robot lawn mower to dock punctually in the
charging station (19); it does not set any limits du-
ring mowing. It is imperative therefore for the robot
lawn mower to be on a lawn area with clear op-
tical or physical limits. For the robot lawn mower
to fi nd the guide cable (24) and subsequently the
charging station (19) it must be in the charging
station (19) when mowing mode is started for
the fi rst time. It uses a global navigation satellite
system (GNSS) to determine the position of the
charging station (19). If the position of the char-
ging station (19) is ever changed, it is essential
for the robot lawn mower to be placed again in the
charging station (19) for calibration. Make sure
that there is no shielding or roofi ng which could
prevent the positioning operation. Avoid placing
the charging station (19) near high buildings. Un-
der some circumstances calibration might fail In
such cases due to a poor signal.
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When the battery charge level is low, the robot
lawn mower will return to the charging station
(19). With the help of the GNSS module the robot
lawn mower will determine its distance from the
charging stations (19) and look for it. If the robot
lawn mower comes up against a garden bounda-
ry or any obstacles on its way to the search loop,
it will save its position and the mowing area will
be mapped. This will help the robot lawn mower
to return to the charging station (19) faster in
future use. When the robot lawn mower arrives at
the guide cable (24) it will return to the charging
station (19) using its wire recognition sensors.
This can take several minutes depending on the
garden's size and complexity.
The global navigation satellite system (GNSS) is
also used to acquire location-specifi c sunrise and
sunset data. There must be suffi cient daylight for
the robot lawn mower to work properly. Check the
lens of the camera unit (15) regularly for signs of
dirt.
5.2 Sensors
The robot lawn mower is equipped with a number
of safety sensors. These sensors enable the robot
lawn mower to move within its mowing area.
•
Lifting sensor:
If the robot lawn mower is raised at the back
by more than 30° from the ground or if a front
wheel (12) loses contact with the ground, the
robot lawn mower and the rotation of the bla-
des (10) will be stopped immediately.
•
Tilting sensor:
If the robot lawn mower tilts severely in any
direction, the robot lawn mower and the
rotation of the blades (10) will be stopped
immediately.
•
Obstacle sensor:
The robot lawn mower is able to detect
obstacles in its path. If the robot lawn mower
collides with an obstacle, the robot lawn
mower and the rotation of the blades (10) will
be stopped immediately and the mower will
reverse away from the obstacle.
•
Camera unit:
The robot lawn mower comes with a camera
unit (15) which analyzes the mowing area
(approx. 1m²) lying ahead of it. The camera
is directed at the ground so that the objects
lying in the screen area appear with a ma-
ximum height of 50 cm. The image material
to be processed is saved only locally and
temporarily on the robot lawn mower and is
continually overwritten. The robot lawn mower
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