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8
FAULT DIAGNOSIS
180
8017768/12AX/2019-05-31|SICK
O P E R A T I N G I N S T R U C T I O N S | TIC
Subject to change without notice
8.4
Typical fault situations
The Floor Finder will not switch off
Possible cause
Remedy
The 2D LiDAR sensors do not have a
clear view of the measuring range.
The LMS Width is hanging down too low
(lower than 5 m) or is not perpendicular
to the road (Z-axis rotation greater than
5°).
The positions and alignment of the 2D
LiDAR sensors do not match the actual
conditions.
▸
Use the filtered raw data to check whether the 2D
LiDAR sensor’s visual range is clear (see chapter
8.3.1 Fault diagnosis in TEMS Manager
▸
Check the position and alignment of the 2D LiDAR
sensors in TEMS Manager. The position and
alignment must match the actual conditions.
▸
Carry out mounting in accordance with the
specifications.
▸
Use the
FloorFinderState
and
FloorFinderResult
parameters to analyze the status messages of the
Floor Finder.
FloorFinderState
Unknown
: No status available (yet)
Recording
: Collecting data
Calculating
: Performing calculation
Finished
: Result is available
FloorFinderResult
None
: No result available (yet)
NotEnoughPoints
: The number of visible
measurement points is insufficient
Wrong configuration
NoiseTooHigh
: Too much “interference” in
measurement data
Snow, trash, dust, spray
TooClose
: Result too near to scanner
Is there an object in the way?
AngleDeviationTooLarge
: Result skewed
Is the scanner hanging crooked?
DistanceSigmaTooLarge
: Too much difference
between measurements
Too much traffic?
AngleSigmaTooLarge
: Too much difference
between measurements
Mounting too unstable?
Calculated
: Final result is available
There is heavy contamination on the
inspection window of the 2D LiDAR
sensor.
▸
Clean the inspection window of the 2D LiDAR
sensor.
The surface of the road is not level.
▸
Clear away anything located in the measuring
range of the 2D LiDAR sensor.
▸
Make sure that the 2D LiDAR sensor’s visual
range is clear.
There is snow or there are leaves on
the road.
Road surface is extremely dark
(e.g., due to new paving)
Road is extremely wet
Several outputs for the same vehicle
Possible cause
Remedy
This suggests that the distance between
the system components in the
configuration does not match the
distances in real life.
▸
Check the configuration.