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Underwater PTZ?
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| Khandurian |
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Posts: 66
Joined: 09 Jun 2006
Location: Cocoa Beach Florida Baby!!
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Posted: Thu Jun 14, 2007 4:47 pm
Post subject: Underwater PTZ?
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Is there such a thing? If there is, can someone point me to one? I haven't found one.
Got a specific application for it, and yes, it will be submerged 24/7
I can already imagine the questions that people are gonna ask, so I am just gonna come out and say what its for. It's for monitoring fish in a pond that keep disappearing.
We have had a camera covering the grounds, no one stealing them, so were trying to find the predator!
Plus, he wants to document the breeding habits in the pond. So it will need some sort of night vision as well.
Thanks!
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| Rooney |
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Posts: 84
Joined: 27 Sep 2006
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Posted: Thu Jun 14, 2007 5:52 pm
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I have had requests in the past for underwater ptz's and have not found one. If you think a ptz would be best maybe try another route.
1. Fixed underwater cameras. Also if needed you could use a motorized zoom lens in an underwater enclosure.
2. Mount a pan tilt unit above water upside down with the underwater housing below using 2 fixed rods to the underwater enclosure. (one connected to the end of the tilt plate and the other connected around the pan enclosure) It would still give you stability and allow pan/tilt.
3. Combination of 1 and 2.
Most of the underwater ptz cameras that are used on remote submersibles are built by the subs manufacturer. You could also get in contact with them. Just do a search on remote submersibles to find a manufacturer.
Hope that helps.
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| CameraGenius |
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Posts: 148
Joined: 06 Nov 2006
Location: Louisiana
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Posted: Fri Jun 15, 2007 12:57 pm
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I have searched and searched and have not found a PTZ that can be submerged 24/7............probably safe to say one does not exist for this immediate application
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| CollinR |
Moderator
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Posts: 1689
Joined: 25 Nov 2005
Location: Oklahoma, US
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Posted: Fri Jun 15, 2007 1:58 pm
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You can buy acrylic domes and columns, you could just make your own. Then the PTZ is never actually in contact with the water.
Somebody makes a DIY aquarium that supposedly you sit under and put your head through a dome in the floor. You could assemble that putting the bottom plate in upside down. Then all you need to do is make the top cover waterproof and ancor it out there.
EDIT:
Maybe something like this.
http://www.praecogito.com/~brudy/zaza/pictures/photos/DCP00198-2-0.shtml
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| scorpion |
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Posts: 2787
Joined: 26 Mar 2007
Location: Melbourne Florida
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Posted: Fri Jun 15, 2007 3:29 pm
Post subject:
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What would happen if you just used regular bullet cams?
If you could submerge a PTZ, how would you maintain the covering from algae, and lime, or anything else that can block the view?
Too bad you could not use rain X (tm) on the "glass". I would imagine it would it would poison the fish.
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| survtech |
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Posts: 672
Joined: 21 Mar 2007
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Posted: Fri Jun 15, 2007 3:44 pm
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| CameraGenius |
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Posts: 148
Joined: 06 Nov 2006
Location: Louisiana
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Posted: Fri Jun 15, 2007 3:47 pm
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| survtech |
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Posts: 672
Joined: 21 Mar 2007
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Posted: Fri Jun 15, 2007 3:56 pm
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| CameraGenius wrote: |
| airtight does not mean water will not get through it especially left 24/7 submerged |
True, but the best people to ask about that would be Pelco.
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| Khandurian |
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Posts: 66
Joined: 09 Jun 2006
Location: Cocoa Beach Florida Baby!!
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Posted: Fri Jun 15, 2007 5:45 pm
Post subject:
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I could aways build a small acrylic box to mount a regular ptz in, I was just trying to save some time. I have actually built several aquariums on the side so it's not that big of a deal.
Thanks for the clues and information.
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| kensplace |
Moderator
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Posts: 929
Joined: 30 May 2006
Location: UK
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Posted: Sun Jun 17, 2007 6:14 am
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You would probably need a IP68 rated system, IP68 is a rating where the product is tested to work 'long term' underwater, under pressure.
Most stuff, including the pelco mentioned is rated at best at IP66, which is not designed for underwater use.
You have to remember that its much easier to 'airtight' or even waterproof something at normal pressure levels (rain, spray etc) than it is to completely seal a product so it can withstand the extra 'underwater' pressure - and the deeper it goes the more pressure it has to withstand. Also, most weatherproofiing is designed for withstandings medium term punishments (ie it does not rain for ever) but when its in a pond, it has to be permanent...
Do a search on IP ratings, and BS. EN.60529 to find out more about the different types of ratings.
A IP68 system will probably not be cheap  so one of the other solutions would probably be more realistic.
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| Khandurian |
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Posts: 66
Joined: 09 Jun 2006
Location: Cocoa Beach Florida Baby!!
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Posted: Thu Jun 21, 2007 5:07 pm
Post subject:
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Yes, I actually know somewhat about that. However, were talking a max depth of 8 feet. Most likely hovering around the 4 to 5 foot mark.
I have already built a water proof box, will be submerging it and letting it sit for a week and test it. I'm pretty confident it will hold up for long periods of time.
We have caught the culprit that was "stealing" the coy. Stupid wild boars! Get your fish somewhere else!
edit: in answer to the problem of algae. Yes, this is always a concern, and the customer has been informed that weekly maintenance will be required to keep clean.
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| survtech |
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Posts: 672
Joined: 21 Mar 2007
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Posted: Thu Jun 21, 2007 5:31 pm
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And don't forget to allow for condensation on the inside of the box. Or fill it with nitrogen, etc.
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| Lolo Wolf |
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Posts: 424
Joined: 18 Jan 2007
Location: Northwest Montana
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Posted: Fri Jun 22, 2007 12:26 am
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| sam10693 |
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Posts: 26
Joined: 07 Apr 2007
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Posted: Tue Jul 01, 2008 1:22 pm
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Hi mate you want a forward vision metal mickey under water version or the xtreme moondance. 
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| cachecreekcctv |
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Posts: 369
Joined: 11 Nov 2005
Location: California (Northern)
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Posted: Tue Jul 01, 2008 5:41 pm
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Never seen such a beast, but would imagine an Acrylic housing, with 2 to 3 psi of Nitrogen kept inside. Would have to weight it down inside the pond, to keep it from moving and floating away. Small Nitrogen bottle, with regulator, but only a few psi, so not too much stress on the Acrylic itself.
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