RE: Re: Intelligent Light Switching - Thoughts?

["Kenneth Watt" <kennwatt@xxxxxxx>]

Easier still...a pressure mat under you're ass! ;-)

K.

> -----Original Message-----
> From: Graham Butler [mailto:graham@xxxxxxx]
> Sent: 02 January 2002 16:58
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] Re: Intelligent Light Switching - Thoughts?
>
> 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
> >
> >
> >
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