Re: Sensor

["Steve" <steve@xxxxxxx>]

Don't usually close the door. But now that you mention the door, the
bathroom does not have a window so the light has to be on when occupied.
Anyone know of a mains sense to TTL circuit ?

----- Original Message -----
From: "Stuart Grimshaw" <stuart@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: 02 August 2000 8:29 AM
Subject: Re: [ukha_d] Sensor


> What about a switch on the door? Couple that to the PIR with some
logic
> like If the switch (door) is closed, & the PIR is on switch the
extractor
&
> heating on till the door is opened again?
>
> As a safety, you could also have the also program the heating off if
the
> PIR isn't triggered for 15 minutes (how long are you going to lie in
the
> bath for :-)
>
> At 08:08 02/08/00 +0100, you wrote:
> >That one did cross my mind. I dont like the thought of wires in my
bath
> >might give the wife an idea!
> >
> >Cant think of any to add water level sensors with out been
unsightly.
> >
> >----- Original Message -----
> >From: "Julian Driver" <julian@xxxxxxx>
> >To: <ukha_d@xxxxxxx>
> >Sent: 02 August 2000 7:37 AM
> >Subject: Re: [ukha_d] Sensor
> >
> >
> > > In message <014301bffbeb$73336e60$0100a8c0@xxxxxxx>, Steve
<steve@xxxxxxx>
> > > writes
> > > >Hi,
> > > >
> > > >I have PIR's in most rooms, controlling the heating
zoned into one
for
> >each
> > > >of the three floors. With my own software monitoring
movements and
then
> > > >trying to intellegently work out a heating schedule
doing away with a
> >timer
> > > >altogether. The PIR's can also be used for the obvious -
security.
> > > >
> > > >Now for my question. I want to detect when the bathroom
is occupied
to
> >crank
> > > >up the mechanical ventillation and raise the temp a few
degrees. A
PIR
> >will
> > > >be of little use detecting my 16 stone mass when there
is little
movement
> > > >when i am in the tub.
> > > >
> > > >Can anyone recommend a suitable sensor ?
> > > >
> > > >
> > > >Steve.
> > > >
> > > Water level?     ;)))
> > > --
> > > Julian Driver
> > >
> > >
> > >
> > >
> >
> >
> >
> >
>
> ----------------------------------------------
> Stuart Grimshaw
> Schoolsnet Ltd                         Special
> t: 07976 625221                        Projects
> e: stuart@xxxxxxx          Developer
> f: 0870 7060260
>                www.schoolsnet.com
> ----------------------------------------------
>
>
>
>
>



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