gnupic: Re: [gnupic] Flex sensors alternative
Subject:
Re: [gnupic] Flex sensors alternative
From:
Dante ####@####.####
Date:
6 Feb 2005 20:20:44 +0000
Message-Id: <Pine.LNX.4.62.0502062019410.16819@azathoth>
On Sun, 6 Feb 2005, slimboyfatboyslim wrote:
> hi list,
>
> Currently I'm working on a typical flex sensors with PIC
> (http://www.imagesco.com/catalog/flex/FlexSensors.html)
>
> But what I need is a very soft sensors, which when you bent it, it seems to
> be a cloth or a piece of paper,
>
> is there anyone working on very soft flex sensors or is there any
> alternatives?
>
> I'm afriad my question is a bit out of scope but I really need some help.
>
> Cheers,
> SFS
>
Disclaimer:
I have not tried this, so I do not know what if any constraints there are
on the limits of flexibility.
I understand that it is possible to set up a piece of optical fiber with a
common LED as a light source. You then run the fiber to a reasonably
sensitive pickup such as a photo-transistor. This allows you to measure
the intensity of the light transmitted through the fiber. Due to the way
the fiber conducts the light *any* flexing of the fiber will cause a minor
change in the amount of light received. It will take some experimentation
(and possibly an amplifier after the photo-transistor) to calibrate for
your application, but it should be very light weight, and should be rather
sensitive.
I hope this helps.
Keith Blankenship
--
"I saw a really neat proof showing x^n+y^n=z^n has nosolution for
non-zero integers x, y, and z when n>2, but there is not enough space to
show it in this sig."
