Subject:
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photocells
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 27 Nov 1996 23:04:38 GMT
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Original-From:
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Sriram Tirunellayi <SRIRAM@DS5500.CEMRstopspam.WVU.EDU>
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Viewed:
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1495 times
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Hi,
In the book "Mobile robotics -Inspiration to Implementation" the
addition of a logarthmic amplifier to the o/p of a photocell is
discussed. This logarithmic mapping is supposed to make the sensor more
sensitive in dark rooms. Has anyone tried this ?? success, failures???
will the photocell work better than a photodiode after the
addition of this log amplifier? wont the ouput wedge if it is 1 or
less than 1....(since LOG values become nagative) ???
any help will be appreciated
Sriram
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