Re: PIR Options

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

Oh but i do love my pulnix sensors though . Seriously though next time
you
have a hot day  do a walk test of your sensors and see how
they respond .

Frank Mc
----- Original Message -----
From: "psghome2002" <psghome@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Thursday, July 18, 2002 10:17 PM
Subject: Re: [ukha_d]PIR Options


> Kissing a PIR is a test you'd certainly want to do when there's no
> one around!
>
> --- In ukha_d@y..., "Frank Mc Alinden" <armagh@b...>
wrote:
> > Actually Paul my thoughts were maybe it has daul contacts ,one
for
> ha
> > control and one for alarm control . Summer time is a good test
for
> a  pir .
> > Go into a room when the ambient temp is around 30 or more
degrees
> C most
> > cheap ones you can walk up and just about kiss them before
they
> will detect
> > you . I  think the dual tech sensor would be more sluggish
as it
> would
> > require both pir + microwave to trip before alarming .
> >
> > Frank Mc
> > ----- Original Message -----
> > From: "psghome2002" <psghome@h...>
> > To: <ukha_d@y...>
> > Sent: Thursday, July 18, 2002 9:00 PM
> > 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 210 sensor and 220 these are now outdated i think the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.
> > > > >
> > > > >
> > > > >
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