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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Wed, 26 Jan 2000 20:18:06 GMT
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Viewed:
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924 times
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Hi Pete,
Well, here's what I had in mind. I think it can find landmarks beyond the
visible horizon.
First, instructions are stored in the map.
=-= BEGIN INSTRUCTIONS =-=
Go until you see a red brick
Turn left
Go until you see a green brick
Rurn right
Go until you see a black brick
Stop
=-= END INSTRUCTIONS =-=
Just like I couldn't see all the trafic lights involved on my trip to the
store when I first started out, the robot doesn't need to see the red, green,
or black bricks to start travelling. Just start going! The red brick may be a
few inches away, it make be 70 yards away. Just go and look for a red brick.
When you see it, turn left.
David Leeper (can make a left at the next gas station, even if it's 100 miles
away)
In lugnet.robotics, Pete Hardie <pete.hardie@dvsg.sciatl.com> writes:
> David Leeper wrote:
> >
> > Hi Carsten,
> >
> > The other day I was trying to get to Target. I didn't know where the store
> > was, so I asked directions. I was told:
> >
> > <i>Go down the street to the second light and make a left, go two more • lights
> > and its on the right.</i>
> >
> > Strange. There was no timing involved or counting the turns of wheels, but I
> > got there.
>
> OTOH, how many mid-course corrections did you make as you walked down the
> (linear, visible)
> street to maintain the precise orientation when you reached the light?
>
> Landmarks work if they are universally visible, but not if they are beyond the
> apparent horizon.
>
> --
> Pete Hardie | Goalie, DVSG Dart Team
> Scientific Atlanta |
> Digital Video Services Group |
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Message has 1 Reply:
 | | Re: Positioning
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| (...) My point is more basic - you can find those traffic lights because you are using additional info - that they are all located along the 'grid' of roads, and that if you veer left, you correct when you reach the edge of the pavement (or gravel, (...) (25 years ago, 26-Jan-00, to lugnet.robotics)
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Message is in Reply To:
| | Re: Positioning
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| (...) OTOH, how many mid-course corrections did you make as you walked down the (linear, visible) street to maintain the precise orientation when you reached the light? Landmarks work if they are universally visible, but not if they are beyond the (...) (25 years ago, 26-Jan-00, to lugnet.robotics)
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