Subject:
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Re: Robot positioning
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 11 Jul 2000 19:06:10 GMT
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Original-From:
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Kate Rasing <krasing@mil.ufl^saynotospam^.edu>
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Viewed:
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741 times
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If you want to return to "base," all you need is a beacon of some sort. For
example, you could use CdS cells (or anything that finds EM in the visible
light/low IR range) and a lightbulb (or series of lightbulbs, like a strand
of Christms tree lights, that lead to a higher-emitting diode that indicates
base), or a sonar transmitter/reciever pair, and create a behaviour called
'return' that looks for the signal and moves in that direction.
If you wanted to be more advanced and definitely return to the base, you
could also make sonar beacons for positioning (at different frequencies so
it doesn't get confused), and tell the return behaviour that home is, say,
beacon one distance x, beacon two distance y, beacon three distance z, and
to go there (by, perhaps, finding beacon distance one, followint it to
beacon distance two, and if that doesn't have beacon distance z, continue on
until you hit beacon distance two and three).
Of course, all three have their pluses and minuses, like the light bulb
would only work so far, the sonar signals bounce off the wall, the CdS cells
work best for light seeking in the dark, the sonar triangulation lets you
make a map if you desire to...
-Kate
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Katherine Rasing
Machine Intelligence Laboratory, University of Florida
Department of Mechanical Engineering, Iowa State University
Department of Mathematics, Iowa State University
----- Original Message -----
From: Robert Kelly <Robert_kelly@fceinc.com>
Subject: Robot positioning
> My goal is to produce a robot, that among other things, can wander • aimlessly
> (or locate a specific point or object or whatever) and after a specific • time
> or other interrupt, return to its starting point. I want to do it in such • a
> way as to not have to lay out a grid in memory or otherwise load a world • model
> of some sort. I would like to be able to give the 'bot a mission, let it • go
> and when the 'bot determines that it is finished, return to "base".
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Message has 1 Reply:
 | | Re: Robot positioning
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| Hi Kate, I just want to know how/where to get a sonar transmitter/reciever pair with different frequencies for robot positioning. Can sonar module from Polaroid do that? Thanks, William (...) on (...) (24 years ago, 12-Jul-00, to lugnet.robotics.handyboard)
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Message is in Reply To:
| | Robot positioning
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| Hello all, I am currently building a H board/exp board based robot that has (will have) the following sensors: Diffrential drive wheel encoders, hamamatsu sensors combined with the software from the H board site for motor control and distance counts (...) (24 years ago, 11-Jul-00, to lugnet.robotics.handyboard)
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