Subject:
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Re: All-around-the-robot bump detection
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 18 Dec 1998 14:55:05 GMT
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Original-From:
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Dennis Parker <dparker@onrIHATESPAM.com>
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Viewed:
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1256 times
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How 'bout this as an alternative. A flexable containment, possibly the
moderate diameter rubber tube, inside which are two circuits. One is a
continuous metal strip which runs along the inside edge of the outside
wall of the tube. The second is a similar strip, but this one is broken
into a series of sections, each seperated by a resistor. Voltage is
applied to one end of one or the other of these circuits (doesn't matter
which) and voltage is read from the opposite end of the other one. When
a bump happens, voltage will be present at the output at a level which
is indicative of the location of the bump.
Comments?
"Fredrik Glöckner" wrote:
>
> "Michael Gasperi" <gasperi@alynk.com> writes:
>
> > Wrap soft rubber tubing around the robot, seal one end of the tube,
> > and connect the other to a pneumatic cylinder. Have the cylinder
> > push on a touch switch just short of turning it on. When the robot
> > bumps something the pressure in the tube goes up enough to push the
> > switch.
>
> I haven't actually tried this, but I can hardly imagine that the
> pressure generated from just squeezing one small part of the tube is
> sufficient to extend a cylinder and press a touch sensor. The pressure
> generated will probably just "vanish" in the rest of the tube.
>
> In normal pneumatic operation, several pushes on a pump is normally
> needed to extend a large pneumatic sylinder.
>
> Fredrik
> --
> If you reply to this article, please do not Cc: it to me in the mail.
> It suffices to send it to the mailinglist or the newsgroup.
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Message has 1 Reply:
 | | RE: All-around-the-robot bump detection
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| There is an example on the net somewhere of building it just like this using the bend sensors ripped out of a Mattel PowerGlove. -Kerry -----Original Message----- From: Dennis Parker [mailto:dparker@onr.com] Sent: Friday, December 18, 1998 6:55 AM (...) (26 years ago, 19-Dec-98, to lugnet.robotics)
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Message is in Reply To:
| | Re: All-around-the-robot bump detection
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| (...) I haven't actually tried this, but I can hardly imagine that the pressure generated from just squeezing one small part of the tube is sufficient to extend a cylinder and press a touch sensor. The pressure generated will probably just "vanish" (...) (26 years ago, 18-Dec-98, to lugnet.robotics)
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