Subject:
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Re: Ranging techniques
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 1 Jun 1999 19:49:16 GMT
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Original-From:
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Guy & Gad Berg <GBERG@avoidspamNETVISION.NET.IL>
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Viewed:
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991 times
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Bob Kelly wrote:
2). The GP2D02 works well too and is very useful in the short range....
Has anyone had any success at converting the output of this sensor to
inches or some other linear unit of measure? It would be very helpful if
somebody assisted my mathematically challenged self.
Well Bob, we had the same problem, so we used MATLAB to generate a polynom from
the data points of the graph we found on the sharp data sheet.
we got the following coefficients:
1.0e+003 *
0.0000 0.0000 0.0000 -0.0001 0.0058 -0.3032 6.6195
these are the coefficients of x^0,x^1,x^2...,x^6
when :
y=ax^0+bx^1+cx^2+..+fx^6
if x is your reading, then y will be the distance in cm.
I think... :-)
Hope this helps.
Guy
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Message is in Reply To:
 | | Ranging techniques
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| Hello everyone... If I may be permitted to ask your input on some of the following... I have implemented a Polaroid sonar module and a GP2D02 IR ranging unit on a R/C servo actuated pan/tilt mechanism. I can put in "scan_long(45.0)" or (...) (25 years ago, 1-Jun-99, to lugnet.robotics.handyboard)
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