Help- False alarm on motion detector
bshoemake
Problem- system worked fine for 6 months then started having false alarms on
foyer motion at different times of the day.
Using DSC Bravo 3p digital pet set for harsh environments.
No pets in area.
No heating/ac vents, only return vent aprox. 10 feet away.
Front door with glass aprox. 15 feet away.
Things done:
Replaced main panel
Replaced motion 2 times
Replaced wiring to motion
Any ideas?
Thanks
BJ
Michel Dionne
what your problem is. I would try a different brand or at least a different
model.
MikeD
"bshoemake" <bshoe...@yahoo.com> wrote in message
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Jim Rojas
I don't really care for the Bravo 3 line of motions.
Jim Rojas
"bshoemake" <bshoe...@yahoo.com> wrote in message
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Robert Campbell
location without knowing it, and the only way to "solve" it would be to
upgrade to a higher end device - one of the pet immune detectors. I now ONLY
install those even when a client has no pets, and it seems to cut down on
the number of otherwise unexplainable motion problems that occur from time
to time regardless of how well the installation was done....
Personally I have standardized on the Paradox Digiguard 70, but there are
literally dozens of equal quality devices out there on the market....
RHC
"Michel Dionne" <cobra-s...@rogers.com> wrote in message
news:skoY7.2720$yK...@news2.bloor.is...
Patrick Bean
Michel Dionne <cobra-s...@rogers.com> wrote:
> I have seen "bad batches" of motion detectors before with DSC. Maybe
> this is what your problem is. I would try a different brand or at least
> a different model.
Or if you have another motion detecter on the same system try swapping
them over, to see if the problem moves with the hardware or not.
--
____ ___ ____ ____ ___ ____
| _ \|_ _/ ___| / ___| / _ \/ ___| /| Patrick Bean, My site is at
| |_) || |\___ \| | | | | \___ \ / | www.btinternet.com/~pdbean/
| _ < | | ___) | |___ | |_| |___) | /__|__ Using Risc OS4 on a Windows free
|_| \_\___|____/ \____| \___/|____/ | System. See www.riscos.org/
Robert Skinner
end of the wire. You are located in a hall next to a door that is slammed
closed once in a while. The device may be coming loose from the wall and a
bare copper spot may be causing a short.
Another cause for this type of episode is that the wire run was pulled too
tight causing damage the conductor casing. As the wire casing shrinks, a
short can occur.
Check the connections in the panel. It can happen that the screws on the
terminals were not properly tightened and one of the wires is loose. A
train (or a plane, or my mother in law) going by could be causing shorts.
In other words, before you spend money on a new device, check the cheaper
stuff first.
"bshoemake" <bshoe...@yahoo.com> wrote in message
news:5SnY7.29021$mp3.16...@typhoon.southeast.rr.com...
Alarminex
<bshoe...@yahoo.com> writes:
>Subject: Help- False alarm on motion detector
>From: "bshoemake" <bshoe...@yahoo.com>
>Date: Tue, 01 Jan 2002 19:12:01 GMT
All/most of the advice you've received is valid, however if you would like to
find what is actually causing the unit to false, after you've determined it's
not the unit itself, I'd suggest the following might give some results.
See if you can determine if the false signals are occuring during a certain
time of the day. If you aren't hooked to central, does your system have an
event log that is accessable to you? I'm proposing that there is an exteranious
light/or heat source coming into the area. When the sun shines through the
glass in the foyer, does it fall in an area that the motion detector sees?
Rapid heating and cooling of anything by the sun and movement of clouds or
trees blowing in the wind can cause a problem. If there are no other windows in
view of the detector, try covering the glass in and around the front door.
Even if the motion detector is not aimed to look out a far window, if for
instance, there is a swimming pool with the sun glittering off the water,
shining into the motion detector, you've got a problem. Even if the swimming
pool is far beyond the rated range of the motion detector. How about the sun
reflecting off a neighbors window? I've had seasonal false alarms caused by the
sun being in a specific location at certain times of the year. Take note of the
time of the year it is, if you find that the false alarms stop for no reason.
They could start again next year at the same time.
Take a look on the other side of the wall from the motion detector to see if
there are any souces of RF interference. Do you have any kind of transmitting
devices in the house that would emit signals duing the time the false alarms
occur? Do any neighbors have CB's or radio transmitting equipment? Do taxi cabs
or police cruise the area that might be a source of RF? Radio stations.
Airfields? Kid's with two way radios just new toys for the holidays? Do you
have one of those RF door bells? Even though the detector is in the foyer, take
a look as far as you can see in direct sight from the unit. Are there any
curtains in the next room that might move when the heat or air conditioners
come on? Any plants with leaves that can move?
I don't know if your unit is a pet immune unit or not or if you have pets but
if the unit is looking at the stair way in the foyer and the cat goes up the
stairs, when it gets to the region of the motion detectors array, that is in
the top tier of the lens ..... pet immunity does not work. Is the unit looking
at a mirror or anything highly reflective? If so ...... what do you see in the
mirror? If it moves, or reflect light, it can set off the motion detector. How
about a crystal chandelier with sunlight or car lights reflecting?
Anything that can reflect heat can reflect light and vice versa.
Hope this gives you the clue you need.
>
>
Jim
Remove the Qzapp to email
sl
> Are you serious?
Rich
"bshoemake" <bshoe...@yahoo.com> wrote in message
news:5SnY7.29021$mp3.16...@typhoon.southeast.rr.com...
>
> Problem- system worked fine for 6 months then started having false alarms
on
Don't over look Critters:
You know you have missed the one thing, We have at the Museum Spiders, We
have false alarms on the second floor. Three to four times, It turn out to
be a spider in the PIR housing. We added the electronic bug chasers and
have been false alarm free for over a year.
bshoemake
I have replaced the detector 2 times. Once with another DSC 3P and once with
an ademco pet
immune. Still get false alarms about 3 times a week at different times, both
morning and night. That makes me think it's not a sun thing. I also have not
seen any bugs in or around any of the detectors. I've never had this happen
before.
thanks for all the input
BJ
ALARMAN
area lately if it just started all of a sudden and been working fine. Home
owners can help out alot if you let them.
"Nomen Nescio" <nob...@dizum.com> wrote in message
news:3ae012aad8716e19...@dizum.com...
> The God's honest truth is that we alarm experts really have no idea why
> your motion detector is causing false alarms, and even if we were at your
> home looking at it, we probably still couldn't tell you why your alarm
goes
> off.
>
> The vast majority of the time, there is no obvious reason why a motion
goes
> off. Sure, occasionally you will find someone has brought a mylar balloon
> into the area, or a bird, spider, or other critter is present, or some
> other obvious application problem exists. But most of the time, we have
no
> damn idea why the thing tripped. We get there, look at it, and it's
> working perfectly--now.
>
> After all, a motion detector only has to malfunction for about one second
> to cause a false alarm. Compare that to the total number of seconds that
> detector is in operation for an entire year, and you'll see we are
> expecting 99.999999999+% reliability from a device that costs under fifty
> bucks, and which is not even 100% tested by the manufqcturer before
> shipment. And then we get upset when the "piece of crap" causes a false
> alarm. We want mil-spec reliability at a bargain-basement price.
>
> I concluded long ago that it's not cost-effective to screw around trying
to
> figure out the "why." My theory is that there are some sort of unique
> environmental conditions present at a given location (temperature, air
> pressure differentials, light, a certain RF frequency, etc.) that will
> cause a certain motion detector to trip, based on the internal design and
> signal processing capabilities of that particular detector. Therefore,
> replacing the sensor with an identical one is not a good solution, since
> the new detector will have exactly the same optics and electronics as the
> old one.
>
> So, I like to replace the unit with one made by a different manufacturer.
> Different design, different signal processing algorithms, different
> everything. It isn't a matter of one high-quality brand of detector being
> "better" than another; it's that in a particular environment, one unit may
> work better than another. Possibly an electronics engineer armed with a
> slew of test equipment could come to your home and figure out exactly why
> your detector isn't working as intended. I can't, and Lord knows I've
> tried.
>
> Replace with a different make and model. Worst case, put two detectors in
> parallel. Don't screw around with it.
>
> - badenov
>
>
>
>
Andy Hopper
not changed..Check the wire and also.. (happened to me at my home) change
the zone the detector is connected to..(reprogram as required)... I was
gettting false alarms from my front door happened twice in two weeks.. and
finally.. ( a fluch contact) It happened while I was sitting watching a
little Sat morning TV ... the chime kept going off.. no rythem and I could
not cause it to happen but it happened about 10 times so I swapped with a
spare zone.. never again.. ( no idea.. wires were not loose.. but I did also
reprogram so what was the cause unknown) but I would look at wire and panel
now..not that motion. Good Luck,
--
Andrew A. Hopper (Andy)
Owner / Operator
BPS
6-3399 Paul Anka Dr.,
Ottawa, ON K1V 9R8
PH: (888) 845-5734
www.bps.on.ca
VOXCOM Authorized Dealer
"bshoemake" <bshoe...@yahoo.com> wrote in message
news:pWsY7.29395$mp3.18...@typhoon.southeast.rr.com...
Ranger Alarm Services
>Message-id: <5SnY7.29021$mp3.16...@typhoon.southeast.rr.com>
Make sure that all the alarm wiring,especially to the motion detector, if
running along side high voltage wires, is at least 12 inches away. Its all
right if they cross at right angles but not if they run parallel to each
other. If this is the case, anytime a high voltage appliance ( electric heater,
air conditioner etc) turns on, a foreign voltage will be induced in the alarm
circuit and cause an alarm.
Use plumber's putty or silicone sealant to seal any openings bugs might use to
get inside motion detectors.
All the best,
John
RANGER ALARM SERVICES
Serving: Nassau,Suffolk,Brooklyn and Queens N.Y.
Jack Stevens
checked the event buffer, or are you relying on CS report only?
I have had occasions in the past where some installer had mistakenly
programmed his panel and sent signals on one of my accounts. I changed the
account number right away, but the signals continued to hit the old account
for a month off and on. Just a thought.
--
Jack Stevens
alarman2000.NOSPAM.yahoo.com
remove NOSPAM. to reply
"bshoemake" <bshoe...@yahoo.com> wrote in message
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bdolph
Have you changed out the PIR with another model? This is a far shot but you
might have a newly introduced RFI problem. Different PIR's would have a
slightly different tuned circuit and may solve the problem. Check to see the
time the local police car has been driving by your house at the times of the
alarms.
Bob
Robert Skinner
"Jack Stevens" <alarm...@yahoo.com> wrote in message
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Terry Buyers
alarms, reconnect the loop to the PIR and mask the PIR with a piece of
cardboard or somesuch. If no false alarms mask the PIR lens and unmask
one quarter at a time to find what is causing the problem. FWIW: this is
assuming you have drilled a hole just a little larger to run wire into
the PIR and you don't have either a draft alley or critter access. In
this weather they will cuddle up to the electronics to stay warm and
occasionally crawl across the detection element. A little RTV and a bit
of mothball can cure this problem.
Terry Buyers
New Ellenton, SC
"bshoemake" <bshoe...@yahoo.com> wrote in message
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VSS DOUG
Is the motion facing outwards towards the glazed door ?, and if so has the door
been replaced or has the glass been replaced with a different kind of glass, we
had a customer who started having false alarms on a motion sensor after the
plain glass was replaced with patterned glass. If the sensor is facing the
glass has anything changed outside the door that would allow more sunlight to
hit the glass, in any event if the sensor is facing the glass it would be a
good idea to relocate it.
Doug L
BJ wrote>System DSC 1555-hardwired
Jack Stevens
3/16 hole for my cable. No critters allowed.
--
Jack Stevens
alarman2000.NOSPAM.yahoo.com
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"Terry Buyers" <sirk...@mindspring.com> wrote in message
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sl
ever compared with this. Hope he lets us know what the problem was. That
is IF he ever finds out.
JimL
"VSS DOUG" <vss...@aol.com> wrote in message
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