Subject:
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Re: Positioning
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 30 Jan 2000 14:00:04 GMT
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Viewed:
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2358 times
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In lugnet.robotics, Andy Gombos <gombos@ne.infi.net> writes:
How about a completely different approach?. Two 'beacons'. Each radiates a
pulse of IR, and simultaneously, a pulse of ultrasonic tone. With each beacon
firing alternately. The receiver 'sensor', would look for the IR pulse, and
then time the two different tones. This allows you to locate in 2D, provided
you are on one 'side' of the pair of beacons, but gives two solutions if you
can be anywhere. Obviously there will be errors produced by path length
changes, with passive objects in the field, but it provides the basis of a 2D
location system, which can be very 'low powered' at the robot end (the other
won't be bad, since it can be a very short pulse). The receiver can also look
for a particular frequqncy on the IR pulse to make if fairly noise immune.
Best Wishes
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Message has 1 Reply:
 | | Re: Positioning
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| Hi Roger, This sounds interesting. Unfortunately, I don't have any experience with Beacon mapping, though I hope to explore it some time in the future. Perhaps someone else on this list has experience in this area? David Leeper (would love to find (...) (25 years ago, 31-Jan-00, to lugnet.robotics)
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Message is in Reply To:
| | Re: Positioning
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| Well, it seems that you all want this to be flexible. How I understand it is that you will have to do at least some preperation to use this landmark system. Now I was thinking about Marco's idea-put a grid of IR beams on the floor, and use the (...) (25 years ago, 30-Jan-00, to lugnet.robotics)
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