I'm looking for design ideas and components for an intrusion alarm for
the boat. A friend bought 2 IR xmit and 2 IR receiver units to mount
in the cockpit, but my thought is that irregular sunlight bouncing off
waves, etc is going to set this arrangement off.

Panama wrote:
I'm looking for design ideas and components for an intrusion alarm for
the boat. A friend bought 2 IR xmit and 2 IR receiver units to mount
in the cockpit, but my thought is that irregular sunlight bouncing off
waves, etc is going to set this arrangement off.

Thieves and vandals prefer the cover of darkness, making a motion sensor
light the most effective deterrent. Break the beam, the boat is flooded
with it. Higher end motion sensors can be adjusted for the amount of
"bulk" required to break the beam, which would prevent birds and flying
insects from setting 'em off.

--
Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://www.seaworthy.com/html/get_ri...oat_odors.html

If you are cruising:

While in Mexico through to Panama I rigged up two fishing lines
strung to cloths pins around both sides of the boat. If the line was pulled
the end of it was a wooden piece of cloths pin that separated two screw contacts
in another cloths pin. Pull the stick out and the contacts (small bolts )
touch. On the back of the screws were connected wires to the bildge alarm.

It worked great, including the night in Punta Arenas Costa Rica when I came
back and forgot to step over it and woke everone on the boat.
----------

The other is a small yap yap dog. I hate em, but they are not electronic
and their batteries don't fail. When buddy boating they also yap when
someone approaches another boat. The potty problem is solved by getting a
chunk of hemp rope and coiling it on the deck. Dog does it's thing and then
throw the rope over to be washed by the sea.

I am sure there are a bunch of electronic stuff. But knowing electronics,
if it can fail it will fail. One year in the Long Beach CA to La Paz Mex.
race. One Hour after the gun went off, the sum log, and wind indicator.
We DR'd the coast of Baja in a fog for the race. This was long before
GPS, all I could use was sextant.

I skipper charter boats in the carib now. GPS is so amazing.

Gary










Peggie Hall wrote in message ...
Panama wrote:
I'm looking for design ideas and components for an intrusion alarm for
the boat. A friend bought 2 IR xmit and 2 IR receiver units to mount
in the cockpit, but my thought is that irregular sunlight bouncing off
waves, etc is going to set this arrangement off.

Thieves and vandals prefer the cover of darkness, making a motion sensor
light the most effective deterrent. Break the beam, the boat is flooded
with it. Higher end motion sensors can be adjusted for the amount of
"bulk" required to break the beam, which would prevent birds and flying
insects from setting 'em off.

There are a couple guys who hang out in news:alt.security.alarms who have
done some really comprehensive boat alarms including monitoring using
cellular communications designed for alarm purposes.

Obviously communications may not work when off the coast of some desert
island in the middle of nowhere, but it works well when at your home
anchorage.


--
Bob La Londe
Yuma, Az
http://www.YumaBassMan.com
Promote Your Fishing, Boating, or Guide Site for Free
Simply add it to our index page.
No reciprocal link required. (Requested, but not required)




"Panama" wrote in message
...
I'm looking for design ideas and components for an intrusion alarm for
the boat. A friend bought 2 IR xmit and 2 IR receiver units to mount
in the cockpit, but my thought is that irregular sunlight bouncing off
waves, etc is going to set this arrangement off.

On Sun, 9 Nov 2003 20:08:43 -0700, "Bob La Londe"
wrote:

There are a couple guys who hang out in news:alt.security.alarms who have
done some really comprehensive boat alarms including monitoring using
cellular communications designed for alarm purposes.

Obviously communications may not work when off the coast of some desert
island in the middle of nowhere, but it works well when at your home
anchorage.

Although this isn't an alarm as such, more along the lines of
intrusion prevention for foreign anchorages, while doing a Google
search the other day I found where someone sells an electric fence
charger/energizer for boat railings. With a bit of imagination I would
think satisfactory electrical return paths could be worked out to
allow use of a standard cattle unit.
Certainly has a lot of appeal and beats Slocum's carpet tacks.
The attempted intruder also acts as his own alarm as the YELP should
be able to be heard for some distance. (judging from my own first
encounter with an electric fence..."Now how bad can this be?")

Kiyu



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The problem that I see with the "electric fencer" idea is that on
fiberglass boats there is no ground return path. Having installed
a few electric fencers in the past, I can tell you that normally the
fencer ground is connected to a metal stake driven deep into the
earth. Then when someone touches the wire of the fence, the dirt
they are standing on makes the return path. I'm not sure that fiberglass
would conduct enough for someone standing on the deck to get much of
a shock from touching an energized railing. It might.

Now on a steel, or aluminum boat... ;-) Of course, you would then have
to electrically insulate the railings from the rest of the boat. And that
fencer is going to really annoy your neighbors whenever someone trys
to use the radio.

Later,

Don W.



Kiyu wrote:
On Sun, 9 Nov 2003 20:08:43 -0700, "Bob La Londe"
wrote:


There are a couple guys who hang out in news:alt.security.alarms who have
done some really comprehensive boat alarms including monitoring using
cellular communications designed for alarm purposes.

Obviously communications may not work when off the coast of some desert
island in the middle of nowhere, but it works well when at your home
anchorage.


Although this isn't an alarm as such, more along the lines of
intrusion prevention for foreign anchorages, while doing a Google
search the other day I found where someone sells an electric fence
charger/energizer for boat railings. With a bit of imagination I would
think satisfactory electrical return paths could be worked out to
allow use of a standard cattle unit.
Certainly has a lot of appeal and beats Slocum's carpet tacks.
The attempted intruder also acts as his own alarm as the YELP should
be able to be heard for some distance. (judging from my own first
encounter with an electric fence..."Now how bad can this be?")

Kiyu



-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----

I've done a few alarm systems in funny places; I found that the worst thing
is false alarms, so now I use only simple and reliable switches, i.e. light
beams and magnetic switches [no motion detectors].
but the thing I really like is the paging system with it's own transmitter
[CB frequency]. works for about a half a mile. get it form auto radio and CB
kind of shops.
then you have the option for a silent alarm. we caught a guy with ours some
years ago [there was some violence, noise, and then a three year prison term
for him].
while sleeping on board, nothing beats a dog. a funny smell in your space
rings in a canine head like a siren. my fuzzy little friends have saved us
at least 4 times in the last 15 years.
regards, Mark Holden


"Kiyu" wrote in message
...
On Sun, 9 Nov 2003 20:08:43 -0700, "Bob La Londe"
wrote:

There are a couple guys who hang out in news:alt.security.alarms who have
done some really comprehensive boat alarms including monitoring using
cellular communications designed for alarm purposes.

Obviously communications may not work when off the coast of some desert
island in the middle of nowhere, but it works well when at your home
anchorage.

Although this isn't an alarm as such, more along the lines of
intrusion prevention for foreign anchorages, while doing a Google
search the other day I found where someone sells an electric fence
charger/energizer for boat railings. With a bit of imagination I would
think satisfactory electrical return paths could be worked out to
allow use of a standard cattle unit.
Certainly has a lot of appeal and beats Slocum's carpet tacks.
The attempted intruder also acts as his own alarm as the YELP should
be able to be heard for some distance. (judging from my own first
encounter with an electric fence..."Now how bad can this be?")

Kiyu



-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----

On Sat, 08 Nov 2003 09:24:12 -0800, Panama wrote:

I'm looking for design ideas and components for an intrusion alarm for
the boat. A friend bought 2 IR xmit and 2 IR receiver units to mount
in the cockpit, but my thought is that irregular sunlight bouncing off
waves, etc is going to set this arrangement off.

The previous owner of our boat installed two radio shack motion
detectors on the overhead aimed at the entry hatches. I haven't felt
the need to use them yet, but I wonder if anyone has some comments on
that approach. We have a cat on board but haven't trained it to bark
yet.

He also installed a switch for major deck lighting at the main
stateroom berth. I think that would help in a crowded anchorage.

You would want door contacts for the doors of course. I would recommend
dual-tech motion detectors if you are going to use them to keep false alarms
down. The IR has to be set off as well as the micro wave for it go in to
alarm. This means that light or heat that would set off the infra red would
not set off the microwave. A bird that would set off the microwave (
Motion) would not set off the infra red but a human walking would wet off
the infra red heat and the micro wave motion. I would also recommend going
wireless to keep from having to run wires and it would be easier to move the
sensors later if wanted. The alarm system can be connected to the dock
phone line to dial out to where ever you want or it can be local on the boat
only and sound an alarm there.

There are many possibilities of ways to do this. I would start with what
you want the end result to be and design backward. It is easy to do.

John Mears
"Panama" wrote in message
...
I'm looking for design ideas and components for an intrusion alarm for
the boat. A friend bought 2 IR xmit and 2 IR receiver units to mount
in the cockpit, but my thought is that irregular sunlight bouncing off
waves, etc is going to set this arrangement off.

Thanks - something like the DSC Force 2 dual detector should be OK

http://www.dscsec.com/nwforce2.htm



On Thu, 13 Nov 2003 17:11:05 -0700, "JG AJ"
wrote:

You would want door contacts for the doors of course. I would recommend
dual-tech motion detectors if you are going to use them to keep false alarms
down. The IR has to be set off as well as the micro wave for it go in to
alarm. This means that light or heat that would set off the infra red would
not set off the microwave. A bird that would set off the microwave (
Motion) would not set off the infra red but a human walking would wet off
the infra red heat and the micro wave motion. I would also recommend going
wireless to keep from having to run wires and it would be easier to move the
sensors later if wanted. The alarm system can be connected to the dock
phone line to dial out to where ever you want or it can be local on the boat
only and sound an alarm there.

There are many possibilities of ways to do this. I would start with what
you want the end result to be and design backward. It is easy to do.

John Mears
"Panama" wrote in message
.. .
I'm looking for design ideas and components for an intrusion alarm for
the boat. A friend bought 2 IR xmit and 2 IR receiver units to mount
in the cockpit, but my thought is that irregular sunlight bouncing off
waves, etc is going to set this arrangement off.