RE: RFC xplOccupancy

["Tony Tofts" <tony@xxxxxxxxxx>]

Hi Guys,

>             Have been thinking recently about  Access /
> Occupancy and a couple of  ideas i has was making a xPL Card
> reader  or an xPL RFID Reader......Was also thinking of
> making a pir probe for my probe system as its a zoned system
> and use a specific probe input .....

Although I havent really thought about a specific schema for occupancy xPL
opens up the opportunity to use all sorts of stuff for occupancy detection.
E.g. changing the tv channel in the lounge would suggest the lounge is
occupied. Also, if you detect occupancy in the landing, then a bedroom,
then
until you get occupancy on the landing again you can assume (to some
degree)
that there is occupancy still in the bedroom even if it isn't detected
anymore (i.e. someone is asleep and not moving).

There are lots of possibilities of course, and none are perfect either, but
an application that could make weighted decisions regarding occupancy and
issue messages based on this 'likelyhood of occupancy' is something I've
been thinking about for a long time. Just not had the time to do anything
about it!

You'd need to be able to enter parameters into the app to describe how the
rooms connect etc too...

I've fitted x10 security sensors on each door to speed up detection (e.g.
if
movement detected on landing and bedroom door is opened then assume someone
is entering the bedroom and vice versa - it's quicker than relying on a
pir).

Regards
Tony