Manual optoNCDT 1402 - Micro-Epsilon

Operation6.3 AverageThe optoNCDT1402 is supplied ex factory with the default setting „moving averaging, number of averagingN = 1“ (no averaging activated).Implemented averaging methods in the sensor:--Moving average--MedianThe purpose of averaging is to:--Improve the resolution--Eliminate signal spikes--“Smooth out“ the signal.Averaging has no effect on linearity. A combination of the two averaging methods is not possible. The averagingis recommended for static measurements or slowly changing measurement values.6.3.1 Averaging Number NIn every measurement cycle (at a measurement rate of 1.5 kHz every 0.66 ms) the internal average is calculatedanew. The averaging number N indicates the number of consecutive measurement values to be averagedin the sensor.Averaging does not affect the measurement rate or data rates in digital measurement value output.6.3.2 Moving Average (Default Setting)The selected number N of successive measurement values (window width) is used to generate the movingaverage value M on the basis of the following formula:glM = glNMW (k)k=1NMW = Measuring value,N = Averaging number,k = Running indexM = Averaging value respectively output valuegloptoNCDT 1402Mode:Each new measurement value is added and the first (oldest) measurement value from the averaging process(from the window) taken out again. This results in short transient recovery times for jumps in measurementvalues.Page 32