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From: "Robbie Banks"
Subject: Re: Proximity Detector
Date: Wed, 16 Oct 2002 09:40:01 +0100
NNTP-Posting-Date: 16 Oct 2002 08:39:54 GMT
X-Newsreader: Microsoft Outlook Express 6.00.2600.0000
I was thinking about having the camera permanently attached to the main
inside, with a remote sensor linked through a ucontroller to activate and
hold the solenoid for a period of time (say 10-15mins) Pretty sure I
wouldn't want to hang around somewhere when I was nicking something! Then
reset, so if there is further movement it can be activated again.
I guess I can link to PIR's to cover the area, but was hoping for a more
powerful detector, or elegant solution.
"Colubris" wrote in message
> Hi Robbie,
> Many home security and lighting PIR sensors can detect from 70 to 90
> feet. Check your local "home-improvement" stores for various
> detectors. You'll most likely have to remove all the 120 volt stuff
> from the PCBoard - but that's not too hard.
> More difficult is the video camera connection. A simple solenoid
> probably won't do the job. The camera - to have reasonable battery
> life - will have to power down between events. So, when motion is
> detected, you'll need to power the camera ON - wait a bit for it to
> get ready, then 'press and release' the record start/stop button.
> After recording a set amount of time, you need to press the record
> start/stop button again to stop recording. The typical video cam will
> power down automatically after a time of no activity - so at this
> point you can either turn the power off, or just let the camera turn
> itself off after you're finished recording.
> If the camera has a remote control, it would be very easy to hack with
> a few opto-couplers and some timing logic. It's also not too
> difficult to open up the case and solder in some wires.
> If you've got bushels of money to burn and line power available, you
> can buy a time-lapse security recorder - keep the cam on all the time
> and just record continuously. If something has been stolen - review
> the tape - if not, record over it the next night.
> Good Luck!,
> "Robbie Banks" wrote in message
> > Can anybody suggest a suitable detector. I've been looking for something
> > that covers an area of about 30m with a 60 degree angle spread. All the
> > sensors I have found only seem to have a range of about 15m.
> > It's to connect to a push solenoid to operate a video camera. The idea
> > to catch the theiving git that's making of with contents from the yard.
> > suggestions would be appreciated.
> > Robbie
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