RE: Room occupancy detection and door opening/closing - 1-wire or wireless solution?

[Marcus Warrington <marcus.warrington@xxxxxxxxxx>]

>  I'll be playing with Pulsars (beam stress sensors too) when I
finally
> get around to improving room occupancy http://www.sureaction.com/pulsor.htm

I've fitted on too the toilet (as you know) and tested it all works (i.e.
detects someone sitting down and standing up) but still not actually wired
it up to the "brain" so that it can turn the pan fan on.. have
you fitted your pan fans yet Kevin ?

I still intend to use some more of the sensors on the stair treads to
detect someone going up or down and so deduce which lights needs be turned
on (hallway or landing).

I've toyed with the idea of fitting them to floor joists for occupancy
detection but it would work out more expensive than PIRs as they have a
smaller range. Also I'm concerned that next door might set them off.. we
live in old semidetached and when next doors kids run up their hallway
things rattle in our hallway, I think the dividing all on which the floor
joists rest is only a single brick and is transmitting vibrations from
their joists...



Marcus
________________________________
From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of Kevin
Hawkins
Sent: 15 October 2008 11:39
To: ukha_d@xxxxxxx
Subject: Re: [ukha_d] Room occupancy detection and door opening/closing -
1-wire or wireless solution?


The Phaedrus Beambar does this..
http://www.phaedrusltd.com/system/index.html
It can be positioned diagonally to reduce width - but it's still a
fairly large/ugly piece of kit and requires wiring on both sides. What
we really need is a dual beam version that is cosmetically nice -
ideally fitting recessed into a circular rebate.

I'll be playing with Pulsars (beam stress sensors too) when I finally
get around to improving room occupancy http://www.sureaction.com/pulsor.htm

Idrateks' Cortex application has a layer of 'smarts' that helps with
occupancy counting as it knows about paths into and out of rooms,

K

Paul Gordon wrote:
>
> Beam-break sensors in the door jamb would signal someone actually
> passing through the door rather than just opening it. Multiple
> beam-breaks positioned horizontally could even give you the direction
of
> travel (and I guess vertical ones could tell you how tall they were,
> which might be useful if there are kids in the house perhaps?)
>
>



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