Subject:
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A Rotating (Sweeping?) Polaroid "Dish"? Can it work?
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Thu, 12 Dec 1996 07:54:41 GMT
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Original-From:
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Richard Vannoy <RICHARDV@ABAC.COMstopspammers>
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Viewed:
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1582 times
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Rather than fix one of our Polaroids, we want to put one on a rotating platform in front
of the vehicle so instead of turning the vehicle to search for targets, we can stop,
sweep the sonar back and forth, find a target, and turn towards it. (Assumes an
uncluttered floor with only targets and walls.)
Can I use a servo to turn the Polaroid "dish" from say 90 to 180 degrees, pinging as I
go and then use Handyboard to process the info?
The idea is that there will only be a dramatic DECREASE then an INCREASE in range as a
target is swept over. For example, readings in feet of...
7, 7, 7.5, 7.8, 8.0, 3.5, 3.4, 9.0, 10.0
would indicate sweeping along a wall (that is farther away to the right) and the 3.4,
3.5 would be a target because nothing else in an uncluttered room would show these
decreased then increased ranges but a "target". Anybody doing this or have some words
on implementation? If so, talk to me about how convert "The target is where you read
3.4!" to know that angle and convert it into a correct turn to be facing the target.
--
Richard T. Vannoy II richardv@abac.com
PO Box 103 Computer Programmer
La Mesa, CA 91944-0103 College Electronics Instructor
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