Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!tdatirv!pa1
From: pa1@tdatirv.UUCP (Pat Alvarado)
Newsgroups: sci.electronics
Subject: Re: IR Reception - Modulation and Quality
Message-ID: <237@tdatirv.UUCP>
Date: 3 May 91 16:06:40 GMT
References: <2766.27E40773@ofa123.fidonet.org> <159639@felix.UUCP>
Reply-To: pa1@tdatirv.UUCP (Pat Alvarado)
Organization: Teradata Corp., El Segundo, Ca.
Lines: 26

In article <159639@felix.UUCP> dennisg@felix.UUCP (Dennis Griesser) writes:
>OK, so let's talk detector quality.  Specifically noise immunity.
>
>Like half the people on the net, I have been experimenting with the IR
>detector module made by Sharp, sold through Radio Shack.  There are occasional
>bursts of optical noise that fool the receiver module into believing that it
>has seen an IR signal.  I can deal with this.  The incidence is low.
>
.
>
>Any ideas, gang?

Could the detector also be picking up levels of IR from ambient light?
Most IR detector units cover the IR detector with a filter that is
supposed to filter IR levels from ambient light, so the quality of the
detector may be affected by the amount of IR from ambient light that is
allowed to penetrate the filter. This could very well be the case where
the detector is placed where a lot of sunlight is present.

Thanks,
 
-- 
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