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I need any circuit for "sensor of movement"

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josquill

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Hi

I need any circuit for "sensor of movement"

tnks.
:roll:
 

techie

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1. Movement (shock). You can use a piezo buzzer as a sensor. You can even use a mecahnical relay to sense some amount of shock. Or you could use an accelerometer if you want to spend money.

2. Movement (displacement). LVDT, linear encoders, reisitance sliders.
 

sugm

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RF doppler sensor can do it
 

ab2k2

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May I know which brand and model of RF doppler sensor is cheapest?
 

mr_ghz

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The problem of such sensor are that they are mostly fabricated for OEM's.
So there is nearly no chance to get a single one.
One possibility is to get a door-opener and to reuse it's doppler-module
(most a gunn-source with demodulator). Most of them are working on
the K-Band (24GHz), but there also exist (bigger ones) at X-Band (10GHz)
Perhaps you will find on the internet something if you search with terms
like 'gunn source', 'doppler module' or 'movement sensor'

Greets
 

proton

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search for an old microwave anti-theves device. It works in the 10ghz band tipycally.
proton
 

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