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Hello all

Without going into the application in too much detail we are looking
into
the possibility of allowing the identification of items through a
persons sense of touch.

So what I am researching at the moment is passing a waveform down a
pair of wires which when held (the wires that is) will allow the
person to identify that they have the correct item (correct pair of
wires in this case).

Is there any information out there on this sort of thing? Has anybody
tried this before? What sort of safety regulations etc. apply?

Hello all

Without going into the application in too much detail we are looking
into
the possibility of allowing the identification of items through a
persons sense of touch.

So what I am researching at the moment is passing a waveform down a
pair of wires which when held (the wires that is) will allow the
person to identify that they have the correct item (correct pair of
wires in this case).

Is there any information out there on this sort of thing? Has anybody
tried this before? What sort of safety regulations etc. apply?

Any help or suggestions appreciated.

Regards

Denis

Hello all

Without going into the application in too much detail we are looking
into
the possibility of allowing the identification of items through a
persons sense of touch.

So what I am researching at the moment is passing a waveform down a
pair of wires which when held (the wires that is) will allow the
person to identify that they have the correct item (correct pair of
wires in this case).

Is there any information out there on this sort of thing? Has anybody
tried this before? What sort of safety regulations etc. apply?

Hello all

Without going into the application in too much detail we are looking
into
the possibility of allowing the identification of items through a
persons sense of touch.

So what I am researching at the moment is passing a waveform down a
pair of wires which when held (the wires that is) will allow the
person to identify that they have the correct item (correct pair of
wires in this case).

Is there any information out there on this sort of thing? Has anybody
tried this before? What sort of safety regulations etc. apply?

Any help or suggestions appreciated.

I've seen articles on a device with a little X-Y matrix of tiny little

Hello all

Without going into the application in too much detail we are looking
into
the possibility of allowing the identification of items through a
persons sense of touch.

So what I am researching at the moment is passing a waveform down a
pair of wires which when held (the wires that is) will allow the
person to identify that they have the correct item (correct pair of
wires in this case).

Is there any information out there on this sort of thing? Has anybody
tried this before? What sort of safety regulations etc. apply?

Any help or suggestions appreciated.

Regards

Denis

Hello all

Without going into the application in too much detail we are looking
into
the possibility of allowing the identification of items through a
persons sense of touch.

So what I am researching at the moment is passing a waveform down a
pair of wires which when held (the wires that is) will allow the
person to identify that they have the correct item (correct pair of
wires in this case).

Is there any information out there on this sort of thing? Has anybody
tried this before? What sort of safety regulations etc. apply?

Any help or suggestions appreciated.

Regards

Denis

So what I am researching at the moment is passing a waveform down a
pair of wires which when held (the wires that is) will allow the

Hello all

Without going into the application in too much detail we are looking
into
the possibility of allowing the identification of items through a
persons sense of touch.

So what I am researching at the moment is passing a waveform down a
pair of wires which when held (the wires that is) will allow the
person to identify that they have the correct item (correct pair of
wires in this case).

Is there any information out there on this sort of thing? Has anybody
tried this before? What sort of safety regulations etc. apply?

Any help or suggestions appreciated.

Regards

Denis

Hello all

Without going into the application in too much detail we are looking
into
the possibility of allowing the identification of items through a
persons sense of touch.

So what I am researching at the moment is passing a waveform down a
pair of wires which when held (the wires that is) will allow the
person to identify that they have the correct item (correct pair of
wires in this case).

Is there any information out there on this sort of thing? Has anybody
tried this before? What sort of safety regulations etc. apply?

Any help or suggestions appreciated.

Regards

Denis

the possibility of allowing the identification of items through a
persons sense of touch.

the
approach could result in a much less gragil technology

I am using such device for 25 years now myself and as an engineer I am
constantly looking for techniques to replace / rebuilt it.

"Denis Gleeson" <dgleeson-2@utvinternet.com> schrieb im Newsbeitrag
news:184c35f9.0412040855.6a4a25df@posting.google.com...


the possibility of allowing the identification of items through a
persons sense of touch.




Since the late 1970s there were devices available called Optacons.
http://www.nfbae.ca/publications/index.php?id=375

Unfortunatly this technology has disappeared from the market. It essencially
consists of a neadle array (20 x 5) where such trigger is stimmulated by
vibrating certain sets of these pins at a time.
This in fact allows detailed pattern recognition without the effect of
distress on the finger.
I am using such device for 25 years now myself and as an engineer I am
constantly looking for techniques to replace / rebuilt it.

Applying electricity directly to the finger is imho not a good idea. Apart
from safety considerations and possible long-term electrolytic effects I
would assume that you'll lose sensitivity for this after a while.
Vibrating mechanics of some kind triggered by something like an AC current
would work but in order to provide useful information this requires a
complex mechanical setup - just like on the Optacon.

The most promissing approach that I ever considered is to create haptical
stimulation by electrostatic / magnetic fields similar to what you can
experience if you switch your old model color TV off and touch the tube
glass.
If one would switch such fields on and off quickly, shield the whole thing
by some polymer with a suitable electronegativity characteristic and then
put the finger right on this plastic it may be possible to trigger a certain
part of the finger for a short time and - as a result - produce a picture.
This is what the optacon does but the approach could result in a much less
gragil technology with higher resolution and lower costs.

/Roland




After I have read this post, I have had the idea, that I would be able

Roland Zitzke wrote:
I am using such device for 25 years now myself and as an engineer I am
constantly looking for techniques to replace / rebuilt it.


Roland, is this a device to help you see? I've read about these, but never
actually had any direct contact. Can you recognize different faces? Or the
fact that a face is in front of you?