Subject:
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Re: THOUGHTS on mapping with Lego Robot ( added to searching walls)
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 28 May 2003 22:01:58 GMT
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Original-From:
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Steve Baker <SJBAKER1@nomorespamAIRMAIL.NET>
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Viewed:
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1327 times
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Xyvind Steinnes wrote:
> I'm not good at programing at all, but have some thougts about maze-mapping:
> If you have some metods of positioning system like GPS then you know exact
> where the robot are at all time, then the robot can send information back to
> the PC where there are obstacles.
Yes - but that is precisely 100% of the problem. There is no known convenient/cheap
GPS-like system with the properties we desire. Camera's above the arena and things
pasted onto the floor are not possible in many real-world situations. The camera
approach is difficult in variable lighting situations or in a room where the
robot can drive under a chair or table.
Standard GPS is only accurate to ~10 feet - and it doesn't work well indoors.
Differential GPS is much better - but it requires an expensive 'base station'.
> With a type of "I-know-where-I-am" system (GPS) you can easy map each sector
> and see if there is obstacles between sectors.
Yes - if you can know your absolute position and heading, the problem is
pretty simple.
---------------------------- Steve Baker -------------------------
HomeEmail: <sjbaker1@airmail.net> WorkEmail: <sjbaker@link.com>
HomePage : http://www.sjbaker.org
Projects : http://plib.sf.net http://tuxaqfh.sf.net
http://tuxkart.sf.net http://prettypoly.sf.net
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