Re: PIR Options

["Frank Mc Alinden" <armagh@xxxxxxx>]

Hi Amar
               
Currently i use my Genesis Alarm system to control my lites
using relays connected to its outputs  . I have push mechs connected
to
inputs of Genesis.  Homevision will hopefully soon control my lites
using
ld11 modules. My push mechs will stay on Genesis and i will send text
messages from Genesis to hv to turn on off etc . I have  currently 64
inputs
on Genesis and 64 outputs .

Frank Mc
----- Original Message -----
From: "Amar Nagi" <amar@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Thursday, July 18, 2002 9:08 PM
Subject: RE: [ukha_d]PIR Options


> how are you guys interface your PIRs to X10 ? or X10 controller ?
or
Computer ?
>
>
> -----Original Message-----
> From: psghome2002 [mailto:psghome@xxxxxxx]
> Sent: Thu 18/07/2002 12:00
> To: ukha_d@xxxxxxx
> Cc:
> Subject: Re: [ukha_d]PIR Options
>
>
>
> The new PIR sounds interesting - I would imagine it's being
designed
> to address the 'occupancy sensing' issue???
>
> --- In ukha_d@y..., "Frank Mc Alinden" <armagh@b...>
wrote:
> > Hi All
>
>             
I have used many different pir sensors over the years
> as  i
> > worked  on and off in the security industry . My personal
first
> choice is
> > Pulnix sensors and secondly and also IMO a great detector is
the
> Alarmcon
> > 210 sensor and 220 these are now outdated i think the new ones
are
> called
> > 310 + 320 etc but  i used lots of them in large commercial
stores
> here in
> > Melbourne . Also i was speaking via email to the President of
> Pulnix America
> > ( a Scot) and he said that they were developing a pir for the
HA
> market he
> > wouldnt elaborate but will let me know when its ready. If
your
> interested i
> > have a couple of pics on my site  and a link to pulnix
sensors. I
> also
> > purchase my cctv stuff from them.
www.users.bigpond.com/armagh/
> >
> > Frank Mc
> > ----- Original Message -----
> > From: "psghome2002" <psghome@h...>
> > To: <ukha_d@y...>
> > Sent: Thursday, July 18, 2002 7:22 PM
> > Subject: Re: [ukha_d]PIR Options
> >
> >
> > > I trialled a few different PIR's for the same use (there's
been a
> > > lot of discussion about this on here before). I wanted
> the 'perfect
> > > PIR' that had to meet the following criteria:
> > >
> > > 1) Quick triggering
> > > 2) Stable so as not to give false alarms when used as
security
> PIR
> > > 3) Looks good
> > > 4) Ability to turn On/Off LED
> > > 5) Interchangeable Lens for wide/curtain mode detection.
> > >
> > > Point 1 is normally part dealt with by user selectable
'pulse
> count'
> > > i.e. how many detection pattern 'beams' need to be broken
to
> trigger
> > > and the internal logic used by the detector (and how quick
it
> is).
> > > Generally it is best to go for a sensor that allows a
pulse
> count of
> > > between 1 and 4, although most will start at 2 for stability
(low
> > > false-alarm) reasons.
> > >
> > > I must say that I have still not found the ideal sensor - I
have
> a
> > > combination of:
> > >
> > > Alarmcom IR120C - look really good, use great 'black
mirror'
> > > technology (cutting down susceptibility to sunlight and
other
> > > unwanted radiation) and are very stable but a little slow
to
> trigger
> > > + they are fairly cheap trade.
> > >
> > > Pyronix Magnum Ultra - (existing PIR's in my house) -
OKish
> looking,
> > > seem quite stable and have selectable 1/2/3 pulse count
making
> it a
> > > bit quicker to trigger when on 1.
> > >
> > > Optex RX-40QZ - Recommended by Comfort but I've not tried
this
> yet -
> > > only 2/4 pulse count and detection area doesn't look very
dense.
> > >
> > > I think the detection area density is also important. This
is the
> > > pattern of 'detection beams' that spread out from the sensor
and
> how
> > > closely they are spaced. The lower the density, the further
you
> will
> > > have to move to trigger the sensor (depending on pulse
count).
> This
> > > is especially important if you want to detect occupancy in,
say,
> the
> > > living room where you may sit on a sofa for longish periods
of
> time.
> > > A high-density pattern and propper alignment of the PIR will
help
> > > here although you cannot guarantee that the sensor will pick
up
> > > small movements.
> > >
> > > Someone mentioned a dual tech sensor on here a while
ago.
> Generally
> > > these are no good as their trigger time is pretty poor
(long).
> They
> > > use a combination of IR detection and microwaves. This
particular
> > > sensor gave separate outputs for both sensors, allowing
the
> > > (quicker) microwave technology to be used on it's own.
The
> microwave
> > > bit can be difficult as it will apparently sense through
walls
> > > (although I've not tried one) - so siteing is important.
Anyone
> use
> > > these - I'd love to hear if it's successful.
> > >
> > > Paul.
> > >
> > > --- In ukha_d@y..., "Amar Nagi" <amar@a...>
wrote:
> > > >
> > > > I have homeseer, ocelot and I want to set up sensors
around my
> > > flat to
> > > > indicate when a room is occupied. What are my options ?
I get
> a bit
> > > > confused
> > > > by the range of different sensors (Pir)
> > > >
> > > > Any recommend anything ? I don't really want to go for
the RF
> x10
> > > route
> > > >
> > > > Ps sorry I used the wrong subject line b4.
> > >
> > >
> > >
> > > For more information: http://www.automatedhome.co.uk
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> > >
>
>
>
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