Subject:
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Re: pressure sensors... non-conductive foam
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 11 Apr 1997 20:13:32 GMT
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Original-From:
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Max Davies <MDAVIES@saynotospamCAM.ORG>
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Viewed:
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4075 times
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Daniel Nicholas Horner wrote:
>
> A viable option, depending on what sort of pressure is involved, is to
> put a thin piece of conductive (ie. antistatic) foam between two metal
> plates. The resistance between the plates ends up being roughly
> proportional to the pressure applied. It might be worth experimenting
> with various kinds/thicknesses if you find this useful.
>
> When I tried this out, there was about a 5mm layer of foam, maybe half an
> inch square. To get appreciable results I had to put at least a pound on the
> thing with my fingers. Hope this helps.
What a neat idea! Sounds nice and compact and simple to build too.
Do you think it would also be viable to use a soft NON-conductive foam
and then measure the capacitance instead of the resistance to work
accurately with lighter pressures?
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Message has 1 Reply:
 | | Re: pressure sensors... non-conductive foam
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| Max> Do you think it would also be viable to use a soft Max> NON-conductive foam and then measure the capacitance instead of Max> the resistance to work accurately with lighter pressures? Actually this will work better. I built a grid sensor using (...) (30 years ago, 11-Apr-97, to lugnet.robotics.handyboard)
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Message is in Reply To:
| | Re: pressure sensors... antistatic foam
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| A viable option, depending on what sort of pressure is involved, is to put a thin piece of conductive (ie. antistatic) foam between two metal plates. The resistance between the plates ends up being roughly proportional to the pressure applied. It (...) (30 years ago, 9-Apr-97, to lugnet.robotics.handyboard)
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