Subject:
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Re: monitoring motor revolutions
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Newsgroups:
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lugnet.robotics.rcx.nqc
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Date:
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Tue, 28 Nov 2000 11:33:06 GMT
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Viewed:
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2056 times
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In lugnet.robotics.rcx.nqc, Kris Zabriskie writes:
> I am currently working on a program that will monitor where a RCX goes. I
> am trying to establish a coordinate system so if it finds a light it can
> tell the location of the light. I was thinking about monitoring motor
> revolutions, but then I am worried about how to handle bouncing off of a
> wall. Does anyone have any ideas?
The type of navigation you seem to be talking about is called "dead reconning"
by aviators. This method requires accurate distance, speed and
direction mesurments. Counting motor revolutions does not even tell distance if
the surface has uneven friction. You would have to make some assumptions about
direction. Walls would create direction changes that would be difficult or
impossible to detect or measure. Here is an alternative idea similar to GPS.
Place light sources at known locations in you coordinate system you would
probably need three (two work except where you are on a line connecting them).
You could use a light detector and rotation detector to get a "fix". Get
blinking lights with different frequencies.
Good Luck, Lester
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Message is in Reply To:
 | | monitoring motor revolutions
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| I am currently working on a program that will monitor where a RCX goes. I am trying to establish a coordinate system so if it finds a light it can tell the location of the light. I was thinking about monitoring motor revolutions, but then I am (...) (24 years ago, 28-Nov-00, to lugnet.robotics.rcx.nqc)
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