Re: IR detector system, biasing of photo diode

Klaus Vestergaard Kragelund <klauskvik@hotmail.com> wrote:

Hi
 
I am working on an IR detector that will guide a robot into a docking
station.

It sounds as though the problem could be solved easily and reliably with
a VLF magnetic field, rather than light.  Something along the lines of
the Lorenz blind landing beacon.  By using dot-dash modulation, the
receiver would know which side of the centre line it was on.

The only problem would be convincing your client that it wasn't radio -
but that sounds like a much easier problem than all the solutions so far
suggested.

--
~ Liz Tuddenham ~
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