Average filter
•
Average filter
: The average filter carries out a moving averaging of the measured
values. This improves the temporal repeatability of the measurement. The average
filter is suitable for smoothing a temporarily noisy signal diagram.
•
Median filter
: The moving median filter sorts the measured values according to
their size. Then the filter selects the middle value. The median filter is suitable for
excluding individual outliers from the calculation of an average value.
Both types of filter affect the response time of the distance sensor.
Real distance
Measured value without averaging (Avg: OFF)
Output signal
Time t
1
Measured value with median (Avg: 63)
2
4
Measured value with averaging (Avg: 64)
3
4
3
2
1
Figure 9: Effect of measured value filters on the output signal based on a distance value curve
over time
1
Output signal
2
True distance
3
Measured value without measured value filter
4
Measured value with average filter
5
Measured value with median filter
6
Time t
Setting average filter
>
Measurement
>
>
Average filter
>
> Select option >
Parameter
Value
Factory setting
Average filter
Off
,
4
,
8
,
16
,
32
,
64
,
128
,
256
,
512
128
7
OPERATION
26
O P E R A T I N G I N S T R U C T I O N S | OD2000
8026231//2021-11-17 | SICK
Subject to change without notice
