Measurement Averaging; Preliminary Remarks; Moving Mean - MICRO-EPSILON combiSENSOR KSB6430-PROFINET Operating Instructions Manual

Operation
5.4

Measurement Averaging

5.4.1

Preliminary Remarks

The measured values are averages before they are output via the PROFINET interface.
The averaged measurements improve the resolution, enable to mask individual interfering points or "smooth" the measurement result.
i
The linearity behavior is not affected by averaging. Averaging has no effect on the data rate.
The controller is shipped from the factory without averaging.
5.4.2

Moving Mean

The definable number N for successive measurements is used to calculate the arithmetic average M
formula:
N
∑
MV (k)
k=1
M =
mov
N
Fig. 17 Formula for moving average
Method
Each new measured value is added, the first (oldest) measured value is removed from the averaging.
Example with N = 7:
.... 0 1 2 3 4 5 6 7 8
becomes
becomes
.... 1 2 3 4 5 6 7 8 9
combiSENSOR KSB6430 PROFINET
MV = measurement value
N = number
k = continuous index
M = average
mov
2+3+4+5+6+7+8
average n
7
3+4+5+6+7+8+9
average n +1
7
according to the following
mov
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