Re: Vista 20 and IR motion problem

["Robert L Bass" <RobertLBass@xxxxxxxxxxx>]

"Bob Worthy" <securinc@xxxxxxxxxxxxx> wrote in message
news:naKTj.70439$Q52.37062@xxxxxxxxxxxxxxxxxxxxxxxxx
>
> "Robert L Bass" wrote in message
>
>> >>  When it's armed, passing by the detector near the top of
>> >> the stairs disarms the system. Other motion detectors, glass
>> >> breaks and contacts protect the home in the
>> >> usual manner.
>> >
>> > How can the other devices protect the home when passing by the detector
> at
>> > the top of the stairs (descending) disarms the system?
>>
>> If it's disarmed they don't.  The second method bypasses the motion
> detectors
>> if the client descends the stairs.  If no one goes downstairs at night
> they
>> remain active.
>
> So the second method is really the only method that should be considered
> since the first method actually disarms the whole system. At least that is
> what I am understanding from the first sentence of your top post here.

No, I didn't say that.  I said there are two mthods that can be used.  I've
had clients who want their system to disarm automatically when they go
downstairs in the morning.  I've had others who want it to auto-bypass the
motion detectors.  Most clients don't want/need either option.  The fact is
that most customers don't really need anything "custom" -- just proper
protection.  But it is nice being able to accomodate thoose with special
needs.

> Yes I agree, however your first method stated that it arms and disarms the
> system, so maybe that one should not be consider.

Yes, I said there are two ways to do it.  The choice depends on what the
client wants -- not some cookie cutter, one-size-fits-all solution.

>> > Then there is the scenario of two people passing each other in the
> stairwell
>> > which could lead to either a false alarm
>> > or a system that didn't arm because of an open zone depending on who
> crossed
>> > which motion first. Hmmm.
>>
>> If there was someone downstairs at the start they would have already
> disarmed
>> the system
>
> On your first method, someone downstairs ascends the stairwell with the
> system disarmed. They pass someone in the stairwell descending, who under
> your method armed the system by passing through the motion at the head of
> the stairs...

Either you don't understand what I said or you're just trying to argue.
Either method is totally unaffected by someone already being downstairs as the
system would already be either disarmed or partially bypassed.

> The person ascending the stairs now disarms the system when he
> reached the top of the stairs...

That's not how it works.  Go back and read my original post.

> Each are passing motions hence competing for
> status....

> ...I guess with followers, forced arming, delays or some other
> features it would work, but if it is arming and disarming the system each
> time someone goes up and down the stairs during the day there will be
> issues. Bypassing motions probably should be the extent of it.

Again, it depends on what the client wants.  One DIY client of mine who did
this installed a simple button at eye level near the top of the stairs.
Touching it while disarmed would unbypass the downstairs.  Touching it a
second time did nothing.  Passing the motion detector while descending the
stairs would bypass the motion detectors.  Passing it again did nothing.

There's another interesting design of mine using Napco controllers to protect
Orthodox Jewish homes and synagogues.  I discussed it here several years ago.
In their situation, due to religious laws, the systems have to run themselves
automatically during Shabbat and Yom Tov.  I figured out a way, again using
Napco's programmable relay boards, to make the systems disarm just before
sunset on Fridays and on certain holidays (Rosh Hashanah, Yom Kippur, etc).

Once disarmed the motion detectors' and glassbreaks' power was shut off until
the appointed time.  Then the system would auto-disarm again, just in case
someone had manually changed it.  Next the sensor power would restore.  Then,
after waiting several minutes for the detectors to stabilize, the system would
be re-armed.

If the premises was residential the motions, etc., would remain powered down
and the system would auto-arm (using auto-bypass of course) on schedule,
usually around 11:00 pm when everyone was already home.  On Saturday morning
another relay would shunt the circuit to the Shabbas door so the family could
walk to the synagogue.  Once Shabbas was over (after sunset on Saturday) the
family would manually control the system.

Again, these are custom solutions for specific problems and situations that
the mass market, cookie-cutter players neither know how to do nor are
interested in learning.  I always enjoyed figuring out ways to do things most
dealers didn't even try.  Napco was impressed enough with some of my designs
that they published a couple of them in their dealer newsletter many years
ago.

--

Regards,
Robert L Bass

==============================>
Bass Home Electronics
4883 Fallcrest Circle
Sarasota · Florida · 34233
http://www.bassburglaralarms.com
Sales & Tech Support 941-925-8650
Customer Service 941-870-2310
Fax 941-870-3252
==============================>