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Subject:
Re: Pollen Trap Grids - Non-metallic
From:
Dan Oetting <[log in to unmask]>
Reply To:
Discussion of Bee Biology <[log in to unmask]>
Date:
Wed, 21 Jun 1995 12:37:10 -0600
Content-Type:
text/plain
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text/plain (10 lines) 
>Hi:
>
>I have some technical questions:
>
>2)  Bee counters
 
If you use LEDs/photodiodes you will want to use a bi-phase decoder.
The bi-phase decoder takes the input from 2 photodiodes in each passage to
determine the direction of travel and eliminate false triggers.

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