RE: Sat on a Toilet Sensor ?

["Paul Gordon" <paul@xxxxxxxxxxxxxxxxxxxxx>]

http://www.theglowcompany.co.uk/acatalog/LAV_NAV_TOILET_LIGHT.html

:-)

Paul G.


> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf
> Of Frank Mc Alinden
> Sent: 11 July 2007 11:15
> To: UKHA Group
> Subject: Re: [ukha_d] Sat on a Toilet Sensor ?
>
> Hi Marcus
>
> If an ultrasonic sensor was mounted behind the toilet seat as you
> mention
> but looking straight out  say approx  300mm above seat level it should
> give
> 2 different readings whenver someone is sat down  or stood up
> .........Have
> a look at the Maxbotix sensor...... and maybe Gerrys Controller
> http://www.rgbled.org/maxbotix/index.html
>
> HTH
> Frank
>
>
> ----- Original Message -----
> From: "Marcus Warrington" <marcus.warrington@xxxxxxx>
> To: <ukha_d@xxxxxxx>
> Sent: Wednesday, July 11, 2007 7:49 PM
> Subject: [ukha_d] Sat on a Toilet Sensor ?
>
>
> > OK.. I need some ideas for a little problem I have.
> >
> >
> >
> > I am currently refitting our bathroom and I need a way of
activating
> a
> > fan but ONLY when some is SAT on the toilet. The fan is a
"pan fan"
> that
> > extracts air from the toilet bowel to prevent.. err.. smells..
> pervading
> > the room. I did a mini bulk buy of these a few years ago.. which
> reminds
> > me, Kevin.. I still have yours in a box somewhere.. let me know
your
> > address and I'll get them sent to you!
> >
> >
> >
> > My first thought was a PIR but that would be difficult to
restrict
to
> > only "sitting" on the toilet i.e. it would detect if
someone reached
> > down and lifted up the seat , or maybe even some one standing
there
> to
> > pee etc.
> >
> >
> >
> > Next thought was use an ultrasonic sensor mounted on the wall
behind
> the
> > toilet bowel (the cistern is concealed in the wall) and adjusted
to
> > point down at a 45 degree angle so that it covered the rear half
of
> the
> > toilet. Problem is I'm not too sure how "focused" the
beam can be
> made
> > on these devices.
> >
> >
> >
> > Another thought was to use a stress sensor (or weight sensor ?)
on
> the
> > toilet bowel. In some ways this would be the ideal since it would
not
> > rely on proximity to trigger. Problem is I have no idea what I'm
> looking
> > for, how much they are, how easy they are to integrate with a
relay
> etc
> >
> >
> >
> > Anyone got any ideas ?
> >
> >
> >
> > Marcus
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> >
> >
> >
>
>
>
>
>