Remember reading way back at the start about
this
guy that had two IR beams in his door frame. Order they were broken
in
gave direction of travel and central controller kept a count of people as
they
went in and out so it didn't turn lights out until it knew there was no one
left
in the room.
He couldn't figure out why lights were still
on one
time and no one was in the room. Then he remembered he'd carried a
chair
into the room which was slightly in front of him and seen as another person
:-)
Nothing's perfect in this game.
M.
----- Original Message -----
Sent: Wednesday, August 08, 2001 4:39
PM
Subject: RE: [ukha_d] moving away from
the remote-control paradigm
Kieran,
Thanks.
Is there some way of
sensing
not just that I've been through a doorway (broken a beam), but to tell
which DIRECTION I was going in.
Given that there are only 2 of us in
the house, it wouldn't be beyond the wit of man to be able to say that
"person enters room", ROOM IS NOW OCCUPIED, "person enters room",
"person
leaves", "person leaves", ROOM IS NOW EMPTY ... type of thing, but this
is
contingent on being able to detect the diffence between "enters" and
"leaves".
Regards,
Mark Harrison Head of Systems,
eKingfisher
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