Subject:
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Re: Inductive sensor?
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 15 Feb 2005 18:43:10 GMT
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Viewed:
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1033 times
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In lugnet.robotics, Dan Novy <dan@flashfilmworks.com> wrote:
> Hey, sensor gurus, is there a way to create a sensor that will sense
> inductively, as in "wrap a wire around another wire and have the RCX
> tell you when current is flowing in the other wire?
There is always a way.
You would need a very high gain amplifier to pick up the small amount of voltage
induced into the "wrapped" wire. If you are talking about LEGO motor wires, you
would need to separate the pair of wires and only wrap around one. After you
get the signal, you probably need to convert it into RMS or at least an average
for the RCX to read.
There are other ways to measure current. Shunts and Hall Effect sensors for
example.
What do you need the current measurement for?
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Message is in Reply To:
 | | Inductive sensor?
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| Hey, sensor gurus, is there a way to create a sensor that will sense inductively, as in "wrap a wire around another wire and have the RCX tell you when current is flowing in the other wire? (20 years ago, 15-Feb-05, to lugnet.robotics)
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