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PIR OutPut Signal frequency

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eric_s88

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Hi everybody!

I want to know what is the frequency and amplitude of PIR sensor output signal , may somebody know ?

we are modeling an amplification of PIR output signal via Altium simulation software , it consists a LM324 (as OpAmp and comparator ).
but we don't have any information about PIR output signal..

this is what we try to model and increase its functionality : :wink:

Capture.JPG
 

Hi,

A PIR detector detects moving (and warm) objects.

What frequency:
If you wave your hand twice a second in front of the PIR sensor, I expect an output frequency of 2 Hz.
3 times a second --> 3Hz
and so on...

If you see any changing digital signal without a moving object, then your setup might be wrong.

Klaus
 

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