RayTek MI Miniature Infrared Sensor - Post Processing; Averaging

Operation
38 MI
6.4PostProcessing
6.4.1Averaging
Averaging is used to smooth the output signal. The signal is
smootheddependingonthedefinedtimebasis,wherebytheoutput
signaltracksthedetectorsignalwithsignificanttimedelaybutnoise
and short peaks are damped. Use a longer average time for more
accuratedampingbehavior.Theaverage
timeistheamountoftime
the output signal needs to reach 90% magnitude of an object
temperaturejump.

Figure25:Averaging
A low level input (GND) at external input FTC3 will promptly
interrupttheaveragingandwillstartthecalculationagain.
Attention: The disadvantage of averaging is the time delay of the
outputsignal.Incaseofhavingatemperaturejumpattheinput(hot
output temperature
object temperature
temperature jump
average time
Temp
Time
90% of
temperature
j
ump