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RE: moving away from the remote-control paradigm
- To: <ukha_d@xxxxxxx>
- Subject: RE: moving away from the remote-control paradigm
- From: "Mark Harrison" <Mark.Harrison@xxxxxxx>
- Date: Wed, 8 Aug 2001 16:48:10 +0100
- Delivered-to: rich@xxxxxxx
- Delivered-to: mailing list ukha_d@xxxxxxx
- Mailing-list: list ukha_d@xxxxxxx; contact
ukha_d-owner@xxxxxxx
- Reply-to: ukha_d@xxxxxxx
Ignoring the "chair" scenario:
1: How far apart would the beams need to be?
2: How best to interface them to HV?
Regards,
Mark Harrison
Head of Systems, eKingfisher
-----Original Message-----
From: Mark McCall [mailto:mark@xxxxxxx]
Sent: 8 August 2001 16:45
To: ukha_d@xxxxxxx
Subject: Re: [ukha_d] moving away from the remote-control paradigm
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.
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