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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Mon, 31 Jan 2000 04:50:21 GMT
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Viewed:
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2676 times
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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 out more)
In lugnet.robotics, Roger Hamlett writes:
> 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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| (...) The real problem, would be how to return the data to the RCX. The sensor would either have to return the two 'distance' values, and use two sensor inputs, or do the arithmetic itself, and return an X/Y co-ordinate pair on two inputs. Either (...) (25 years ago, 31-Jan-00, to lugnet.robotics)
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Message is in Reply To:
| | Re: Positioning
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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 (...) (25 years ago, 30-Jan-00, to lugnet.robotics)
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