On Tue, 21 Sep 2010 07:28:47 -0700 (PDT), Matty F wrote:
Does anyone have any brilliant ideas about how a security guard can be
notified when sensor lights turn on? The lights may be up to a mile
away so he can't necessarily see when they turn on.
The guard will be walking around, so there will have to be
notification via radio or cellphone or pager etc.
Ideally it would be helpful for him to know which lights went on.
When notified, he can go somewhere to look at a screen. Or he could
have a laptop computer using WiFi that can show whatever he needs to
see.
I was thinking that each sensor light could have a signal wire from
the supply to the bulb or from the relay, to a central point.
Complications are that he may set off sensor lights as he is walking
around, and cats etc may set them off. So, lots of false negatives
which he must be able to discount.

IFACK there is no inexpensive way to do this. Depending on the
value of assets the guard is guarding it might make more sense
to have him NOT patrol, and monitor the sensors remotely wit CCTV.

If he really, really must patrol and receive notifications while
out and be able to distinguish false positives from actual alerts
then I'd suggest some sort of golf-cart type buggy with the tech.
(wirelesssly connected laptop) installed in that, as carrying
something like that which was ruggedished and weatherproof would
be expensive, unreliable, easy to "forget" and inconvenient.
(Plus you'd need to have another one on the shelf as a spare.)

A cheaper option might be to get a guard dog.


--
http://www.thisreallyismyhost.99k.or...0574722078.php