SICK TiM55 Series User Manual

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Figure 15: Without the particle filter: Violation
of the contour due to dust particles in the
vicinity of the object.
"
Figure 16: Using the particle filter: The
response to dust particles in the field is
delayed by one scan. Particles can thereby be
blanked.
3.6.7.2 Median filter
This filter is suitable for excluding individual outliers from the calculation of an average
value.
The values included in the calculation are defined using a 1 x 3 matrix :
3 measured values,consisting of the distance values of a point and its two adjacent
points in the scan, are sorted by size.
The measured value in the middle of this sequence is output as the distance value,
along with its remission value.
The calculation and output of the media values are done statically.
By activating the media filter, 3 distance values within a scan can be reduced to one
output value, which reduces the number of output values to 1/3 compared to the
unfiltered scan.
Table 5: Example: Median for scan 1 and 2
Angle (distance values in mm)
Scan 1 2 3 4 5 6 7 8 ...
1 850 852 851 849 850 850 851 850 ...
Scan 1 output value 850 | 851 | 852 849 | 850 | 850 ...
2 849 850 850 853 852 852 850 851 ...
Scan 2 output value 849 | 850 | 850 852 | 852 | 852 ...
... ... ... ... ... ... ... ... ... ...
3.6.7.3 Average filter
The sliding average filter smooths the distance value. It does this by calculating the
arithmetic mean from several scans of the same point. The number of scans can be
configured (maximum 4 scans).
Table 6: Example: Average filter over 5 scans
Angle (distance values in mm)
Scan 1 2 3 4 5 6 7 8 9 …
1 0 0 1100 1100 1150 1150 1380 1380 0 …
2 0 0 1200 1200 1190 950 1500 1500 0 …
3 0 0 1150 1450 1200 1200 1450 1450 0 …
4 0 0 1170 1170 1220 1220 1470 1150 0 …
3 PRODUCT DESCRIPTION
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O P E R A T I N G I N S T R U C T I O N S | TiM55x/56x/57x/58x 8025144//2021-07-21 | SICK
Subject to change without notice

SICK TiM55 Series Specifications

General

Brand	SICK
Model	TiM55 Series
Category	Accessories
Language	English