Arithmetic Average; Median; Dynamic Noise Suppression - MICRO-EPSILON combiSENSOR KSB6430-PROFINET Operating Instructions Manual

Operation
5.4.3

Arithmetic Average

The arithmetic average M is formed and output via the selectable number N of successive measured values.
Method
Measured values are collected based on which the mean value is calculated. This method leads to a reduced amount of data because
an average value is only output after every Nth measured values.
Example with N = 3:
.... 0 1 2 3 4 ...
becomes
.... 3 4 5 6 7 ... becomes
5.4.4

Median

A median value is formed from a preselected number N of measurements. For this purpose, the incoming measurement values are
re-sorted after each measurement. The median value is then output as the median.
If an even value is selected for median N, the two median measurement values are added and divided by two.
Example with N = 7:
Measurement value sorted
Measurement value sorted
5.4.5

Dynamic Noise Suppression

This filter entirely eliminates the noise of the measured values but maintains the original bandwidth of the measuring signal. For this
purpose, the noise is calculated dynamically and changes in the measured values are only accepted if they are greater than this
calculated noise. However, this can cause small hysteresis effects in the order of magnitude of the calculated noise when the direction
of the measurement signal changes.
combiSENSOR KSB6430 PROFINET
2+3+4
average n
3
5+6+7
average n + 1
3
median = 2
n
median n+1 = 3
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