0
10
20
30
50
60
40
Object remission in %
1
Measuring range in m (ft)
2
0
2.0
(6.6)
70
90
100
80
1.0
(3.3)
1.5
(4.9)
3.0
(9.8)
0.5
(1.6)
2.5
(8.2)
4.0
(13.1)
4.5
(14.8)
3.5
(11.5)
Figure 13: Scanning range as a function of
object remission, TiM31x / TiM32x
1
Object remission in percent
2
Measuring range in meters (feet)
0
10
20
30
50
60
40
Object remission in %
1
Measuring range in m (ft)
2
0
8
(26.2)
70
90
100
80
4
(13.1)
6
(19.7)
12
(39.4)
2
(6.6)
10
(32.8)
Figure 14: Scanning range as a function of
object remission, TiM35x / TiM36x
1
Object remission in percent
2
Measuring range in meters (feet)
3.6.7
Filter
The device has digital filters for pre-processing and optimizing the measured distance
values. They enable the device to be adapted to meet the specific requirements of the
respective application.
The filters can be combined without restrictions. If several filters are active, then the
filters are applied sequentially to the results of the preceding filter. The processing
sequence is as follows:
•
Particle filter
•
Median filter
•
Average filter
The active filter functions affect the output measured values. It is not possible to recal‐
culate the original measured values from the filtered output values. For this reason,
certain combinations of filters might not be advisable.
A particularly effective way to reduce the data in a scan (reduction of measurement
points) is to restrict the scan range (“Data output” > “Output range”) or the media filter.
3.6.7.1
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
...
3
PRODUCT DESCRIPTION
20
O P E R A T I N G I N S T R U C T I O N S | TiM3xx
8024851//2021-07-21 | SICK
Subject to change without notice
