Subject:
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Re: Household Positioning System Re: DGPS
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 12 May 2000 03:07:20 GMT
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Viewed:
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1047 times
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Actually, I am going in that direction. I was trying to use the ultrasonic
transducer to produce a signal and then use two detector to triangulate the
location. That wasn't much of a success. I will need to redo the parts. I
want to try using more beacons and landmarks, but I couldn't come up with a
scheme to assign ID to each beacons. Same as the IR beacons. Any ideas? I
am willing to program an EPROM, but I just don't have any idea as to how to
assign ID to beacons, or how the robot can distinguish the signal. But I
guess if I figure out how to assign ID to beacons, I should know how to
program the robot to use them. :-)
--
Ray
Anders Johansson <anders_johansson@yahoo.com> wrote in message
news:FuEqwu.80E@lugnet.com...
> In lugnet.robotics.handyboard, FThompson9@aol.com writes:
> > In a message dated 05/08/2000 6:25:33 PM Central Daylight Time,
> > willb@selway.umt.edu writes:
> >
> > > Forget global. We need to devise HPS -- Household Positioning System!
> >
> >
> > How about a beacon system. Each room can have 3 or so beacons ...
>
> Some years ago i wrote the presentation part of a prototype system based • on
> ultrasonic beacons.
> the beacons were plugged into wall outlets and transmitted their ID:s, i
> can't remember the details but the beacons were syncronized by • detectecting
> the zero crossing of the 220V 50Hz. i think the system gave the position
> within 1 mm to 1 cm . the prototype system was 2D (x,y) but i see no • problem
> using it for 3D (x,y,z). Just thought i should mentioned it ...
>
> -Anders
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Message is in Reply To:
 | | Re: Household Positioning System Re: DGPS
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| (...) Some years ago i wrote the presentation part of a prototype system based on ultrasonic beacons. the beacons were plugged into wall outlets and transmitted their ID:s, i can't remember the details but the beacons were syncronized by (...) (25 years ago, 11-May-00, to lugnet.robotics.handyboard)
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