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RE: Re: Intelligent Light Switching - Thoughts?
- To: <ukha_d@xxxxxxx>
- Subject: RE: Re: Intelligent Light Switching - Thoughts?
- From: "Steve B" <steve@xxxxxxx>
- Date: Wed, 2 Jan 2002 18:54:11 -0000
- Delivered-to: mailing list ukha_d@xxxxxxx
- Mailing-list: list ukha_d@xxxxxxx; contact
ukha_d-owner@xxxxxxx
- Reply-to: ukha_d@xxxxxxx
Or
scraching of the bollocks :-)
Had a
thought
along similar lines - stick a PIR on the wall under the desk.
Sit down
and
it detects your legs :-)
G
----- Original Message -----
From:
"PatrickLidstone" <patrickl@xxxxxxx>
To:
<ukha_d@xxxxxxx>
Sent: Wednesday, January 02, 2002 11:15
AM
Subject: [ukha_d] Re: Intelligent Light Switching -
Thoughts?
> --- In ukha_d@y..., "Steve B" <steve@b...>
wrote:
> > Could you not improve this with better PIR position or
more than
> one ?
>
> How's this for a barking mad bit of
lateral thinking?
>
> Put a light sensor in the vicinity of the
seat.
>
> 1. PIR detects movement and turns light on.
>
2.
Timer started
> 3. Mark sits down for a 3 hour nap at his
desk
>
4. Light sensor goes from light->dark even though room is lit.
>
5.
Timer expires. If light sensor is dark - reset timer; if light
>
sensor
is light room is empty - turn off light.
>
> Major issue is
positioning light sensor adequately. It doesn't have
> to be directly
fixed to the chair - as long as it is in a shadow
> (perhaps on the
floor in the vicinity of the desk?)
>
>
Patrick
>
>
>
> For more information: http://www.automatedhome.co.uk
>
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