Alarm Monitoring System for Outdoors

RalphXhoff

New Member
[SIZE=14.6667px]Hi there, I have got corn cultivation in my backyard and I also maintain my garden with many ornamental plants. The risk arises every evening when someone trespasses into my yard. I tried fencing it but I’m not satisfied as anything can happen when I’m not around. Is there any Alarm monitoring system that can be fixed so that I will be notified of illegal trespassers? Do suggest techniques on how to monitor my outdoors even in my absence. [/SIZE]
 
 
42etus said:
Give us an idea of the size of the area you are concerned about.
And budget. Detecting motion really doesn't work well outside as wind can cause false alarms. You can probably mask-off areas, but at night it might not be very reliable. You could use an IR or perhaps laser parameter fence, but cost will be high.  Then if the system goes off when you are not there, what will happen?
 
The best solution might be to get a really large dog.
 
I like Optex here.  That said have played with a couple of other outdoor PIR sensors.
 
The Risco is a bit big mounted on the side of the house but from a distance you cannot tell the size.
 
WatchOut.jpg
 
For the driveway / garage here use multiple wired PIRs (aft and fore), wired under the driveway sensors, RFID for house cars, multiple wired sensors on the garage doors and CCTV (cameras all look at each other). 
 
Multiple types of sensors  / triggers help with outdoors stuff.  Mostly though it was after hours lighting.  Daylight after midnight works best for me.  These days with LED lighting you can get much more for less.
 
I was using inside text to speech for night after trigger while in house events but these wore thin relating to WAF so went to simple chimes.....one if by land two if by sea (N, S, E, and W).  In the 1990's used outdoor speech which wore thin with the neighbor who's master bedroom faced the driveway and speakers were on the detached garage.  He called me once while on vacation and asked if he could disconnect the speakers outside.
 
pete_c said:
I like Optex here.  That said have played with a couple of other outdoor PIR sensors.
 
The Risco is a bit big mounted on the side of the house but from a distance you cannot tell the size.
 
attachicon.gif
WatchOut.jpg
 
For the driveway / garage here use multiple wired PIRs (aft and fore), wired under the driveway sensors, RFID for house cars, multiple wired sensors on the garage doors and CCTV (cameras all look at each other). 
 
Multiple types of sensors  / triggers help with outdoors stuff.  Mostly though it was after hours lighting.  Daylight after midnight works best for me.  These days with LED lighting you can get much more for less.
 
I was using inside text to speech for night after trigger while in house events but these wore thin relating to WAF so went to simple chimes.....one if by land two if by sea (N, S, E, and W).  In the 1990's used outdoor speech which wore thin with the neighbor who's master bedroom faced the driveway and speakers were on the detached garage.  He called me once while on vacation and asked if he could disconnect the speakers outside.
One interesting thing about PIR detectors that you rarely hear talked about is that they work by detecting the difference from body heat and the background.  While in most places that is fine, here in AZ in the summer, often there is little or no difference between body temps and background temps.  When this occurs these PIR sensors almost never work.  Can walk right past with no alarm. Even indoors, PIR range varies greatly with the temps. They work much better when its 70 than when its 83.
 
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