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Using multiple VLF detectors in close proximity, problem?
sweetsummer1  
Posted : Wednesday, 27 May 2015 8:55:06 PM(UTC)
sweetsummer1

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Hi all,

I have a theoretical question that has been puzzling me for a while. Say you have a VLF metal detector with a coil diameter of say 40cm . Are you able to have multiple metal detectors (controller+coil) placed next to each other on a board (with enough offset) ? or would they interfere with each other and cause false readings?

My guess is yes you can place multiple metal detector on the same row with a big enough offset but not sure if thats right?
What are your thoughts?

Thanks guys :)
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The Hatter  
Posted : Wednesday, 27 May 2015 9:10:33 PM(UTC)
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If the Detectors are running on the same frequency, you will get some problems. Much like EMI . Electrical Mechanical Interference.

Cheers Trev aka " The Hatter"
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sweetsummer1  
Posted : Wednesday, 27 May 2015 9:22:35 PM(UTC)
sweetsummer1

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Hi Trev, I see.. what about connecting them in a row and only enabling one at a time but switching it quickly ? like the following

(1)....(0)....(0)....(0) then (0)....(1)....(0)....(0) then (0)....(0)....(1)....(0) and so on ? so there isnt more than one coil ON at the same time? reckon that would work?

thank you
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The Hatter  
Posted : Wednesday, 27 May 2015 10:32:36 PM(UTC)
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And why would you want to do that. Theory yes. But of no application I know off. or are you just having a what if moment.

Cheers Trev aka " The Hatter"
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creamer  
Posted : Thursday, 28 May 2015 10:10:34 AM(UTC)
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Cant see it working myself, you would need a meter or two gap between the detectors at least.

For the record, one day i was detecting a beach when my detector (ace 350) started falsing or playing up. Couldnt figure it out till i looked up the beach some 30 plus meters away and there was someone detecting with a powerful PI type machine. The closer he got the worse the falsing got so i had to shut down till he went. Seeing was believing.

HH

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Garrett Ace 350
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