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Topic: Metal imaging system (Read 2 times) previous topic - next topic

aaronadams3



It should pick up residual voltage traces left in the metal object after the current is blinked off.

That is pure rubbish. It is just snake oil, that is not how electricity works.


Rubbish?  http://en.wikipedia.org/wiki/Induced_polarization

aaronadams3

I just think my program is not working, or I don't have the leads hooked up in the right spots.

Grumpy_Mike

That link is fine, how you are interpreting it is rubbish.
Terms like residiual voltage traces are pure rubbish as is the way you are testing it.
It dosn't work you said, that is not news, what would be news is if you got some sort of effect from that test. You are totally missunderstanding how geophysical measurements work.
These sorts of effects are observable in bulk ground measurements, not with a lump of metal in a cup.

AWOL

OP, I think you're confused about timescales.
One thousand milliseconds is one whole second.
Any effects you're likely to measure will be on the milli or micro second scale.
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

Boffin1

I think you will need some pretty fancy analog processing before you even get to the arduino input, this is one of the reasons I gave up on the Proton magnetometer,  trying to dig the fading signal out of the noise after energising the target.
With my mobile phone I can call people and talk to them -  how smart can you get ?

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