How to avoid alarms when foggy or snowing outside?

Plarsson

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Hi,
A bit new to IP cams, but i managed to install my first one outdoors and Im running Milestone on a separate PC.
It's been working well since I put it up until last night. It was very foggy and the IR glare from the water drops gave me a ton of notifications. When I woke up I had 315 new notifications :)

What can you do about this? The only option in I see in Milestone is to fiddle around with the motion sensitivity, Is there anything on the camera side?
I have a hilook ipc-T240h (low end HikVision camera). I chose this for learning purposes and not very expensive.

Thanks a bunch!
 
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I'm not at all familiar with that camera but will say problems like that are usually caused by IR LEDs being clustered around the lens. The simplest solution is to use an eternal IR illuminator separated from the camera by a foot or two. I can tell you that I have a number of Dahua turrets where the LEDs are mounted an inch or two away from the lens and don't have any problems with fog, rain or snow. The same is true of newer bullets with the IR LEDs mounted away from the lens rather than in a ring around the lens. All my older inexpensive, camera have that problem because of the IR LEDs being in a ring around the lens.
 

Plarsson

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OK, got it. But still, in heavy snow, dont you get motion detection active?

Here is a link to the camera specs IPC-T240H
 
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On the cameras with LEDs in rings around the lens, yes false triggers still happen. Very few, if any on the turrets and bullets that have the LEDs separated from the lens by an inch or so. The other problem the "ring around the rosie" has is that they also attract spiders which build webs to catch the bugs the IR lights attract. That problem does happen with any camera with built-in IR lights, but is very, very, reduced in them.

General rule of thumb is that "inexpensive" cameras have LEDs around the lens. Prosumer grade, and up, have the LEDs separated from the lens and use far fewer LEDs to do the job, IE one or two high powered versus a dozen, or so, low power on the "inexpensive".

I did look at the specs earlier but they don't describe, or show, the location of the IR LEDs. If you do install an external IR illuminator you should then shut off the IR LEDs on the camera. That is usually not a feature of inexpensive cameras, though.
 

Plarsson

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On the cameras with LEDs in rings around the lens, yes false triggers still happen. Very few, if any on the turrets and bullets that have the LEDs separated from the lens by an inch or so. The other problem the "ring around the rosie" has is that they also attract spiders which build webs to catch the bugs the IR lights attract. That problem does happen with any camera with built-in IR lights, but is very, very, reduced in them.

General rule of thumb is that "inexpensive" cameras have LEDs around the lens. Prosumer grade, and up, have the LEDs separated from the lens and use far fewer LEDs to do the job, IE one or two high powered versus a dozen, or so, low power on the "inexpensive".

I did look at the specs earlier but they don't describe, or show, the location of the IR LEDs. If you do install an external IR illuminator you should then shut off the IR LEDs on the camera. That is usually not a feature of inexpensive cameras, though.
Actually, it is possible to turn off the IR leds. I still havent found any doc on how IR leds are placed. I'll just have to climb up to the camera and see.
 

Plarsson

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So this night was foggy again and generated tons of notifications.

I'm using Milestones motion detection, maybe it is better to use hikvisions own and generate event from camera?

If this is an issue with placement of ir leds and would be solved with a more expensive camera, what would you recommend? Is darkfighter or powered by dark fighter enough? That is, a camera that has only one large ir led? Any model suggestion with fov of approx 110 deg?

Don't mind camera placement. It is for convenience and learning purposes put at an easy mounting locationScreenshot_20200920-092058_Gmail.jpg
 
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Kameraad

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im not familiar with Milestone, but in Blue Iris it is possible to create zones. See if you can create 2 zones and only make it trigger if an object passes van from one to another. This youtube video shows what i mean.

 

Plarsson

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im not familiar with Milestone, but in Blue Iris it is possible to create zones. See if you can create 2 zones and only make it trigger if an object passes van from one to another. This youtube video shows what i mean.


This is not part of milestone afaik. I don't know if this would solve the problem though. How about when it is snowing, which it will do since I live in Sweden
 

Kameraad

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The trick is to create zones next to each other, not above each other. Only then it will trigger if the snow blows horizontally.
 

bradner

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Ok. Anyhow it is not part of milestone so I don't have this feature available
He's knows you don't have Blue Iris, he's just trying to show you some examples that maybe you can find Milestone's equivalent. If you don't have it, you're SOL, you should buy Blue Iris for the cheap price it is then.
 

bradner

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This is not part of milestone afaik. I don't know if this would solve the problem though. How about when it is snowing, which it will do since I live in Sweden
During snow, the cams that do the best for me are the ones with the IR lights off and are under cover (like a roof overhang) but still the snow is moving and it's just a pitfall of having tons of moving particles falling in the cameras view.
 
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