Re: Sensors

[Chris Hunter <cjhunter@xxxxxxxxxxxx>]

David -

many thanks for 'thoughts ... added to the notes on your 'site, very
useful ... 'hope to have got this sorted before too-long, so we can get
back to the build !

Chris


David Gumbrell wrote:

> On 5/1/06, Chris Hunter <cjhunter@xxxxxxx> wrote:
> >
> > 'wonder what the best list of sensors for HA would be ?
> >
> > PIRs (several)
>
> Enough to give continuous coverage based on their coverage area. Or at
> a minimum coverign door regions. But continous is better.
> >
> > inside temperature (more than one, maybe)
>
> One per room or at least per heating zone. Or maybe more if you have
> huge rooms.
>
> >
> > outside temperature (just one ?)
>
> One - unless you've got some special reason. You'd want shaded zone
> really. Unless you are also controlling a greenhouse perhaps.
>
> >
> > inside humidty (more than one, maybe)
>
> Depends on your ventilation system. If you've whole house venting, you
> might want one per room/zone. Arguably related to heating so per zone.
> >
> > reed-switches (more than one ... )
> >
> For what ? I have reed switches on all doors.
>
> > pressure-pad (one or more)
> >
> Probably special purposes only if you have door switches and PIRs. I
> was thinking of using one to detect standing in front of the basin.
> But not sure of the reliability.
>
>
> > light-level (more than one ...)
> Outside plus one per room or lighting zone.
>
> >
> > glass-break (more than one ...)
> Depends how you feel about security. I get the impression that these
> are not commonly used anymore.
> >
> > carbon-monoxide (more than one ...)
>
> I would have though near combustion devices only.
>
> >
> > rain (one, probably)
> >
> > wind (one)
> >
> > CCTV (one or more)
> Multiple, depending on the coverage youy want.
>
> >
> >
> > Chris
> >
>
> PS: other sensor possibilities can be considered, eg leak sensors,
> water/oil levels, pipe temperature, eleccy meter reading etc etc.
>
> Cheers,
>
> David