Multiple zones

[dohat leku]

Guys - so far I've got most of my camera configurations with 2 zones like B-C or C-D but trying to evaluate if I should experiment with 3 zones in a single rule. For e.g. BC-D which to be means an object should cross both zones B & C and get to D to trigger. However, will this help in my situation and stop rain drop false alerts? My guess is not because rain drops move pretty quick and if I have zones from top to bottom to catch somebody jumping over the fence, that's the same direction a rain drop takes too

Thx

 

[sebastiantombs]

I'd venture you need to increase the object size, and possibly time, if you're detecting raindrops.

 

[dohat leku]

I have played around with object sizes unsuccessfully before. I tried to reduce alerts to animals but given object size cannot be defined by exact distance it led to the cameras missing out on seeing my children

 

[Old Timer]

I have played with it a lot, and even used 3 zones and even tried ab-c and a-bc. It seemed like a<bc worked best,
but it still picked up all of the rain/snow/sleet. I ended up using 2 cameras, larger size, and longer time.
Now I have a profile that turns notifications off when the rain gets too heavy and blowing across all zones.
2 PIR motion detectors do backup for times like this.

Wonder if it would work to wire a PIR into a camera digital input? Might have to try it.

 

[sebastiantombs]

False alerts are a PITA to be sure, but if you're recording 24/7 missing a few might be acceptable.

 

[biggen]

Whats the camera and does it have IVS? If so, you can use IVS trip lines to trigger alerts.

 

[looney2ns]

Guys - so far I've got most of my camera configurations with 2 zones like B-C or C-D but trying to evaluate if I should experiment with 3 zones in a single rule. For e.g. BC-D which to be means an object should cross both zones B & C and get to D to trigger. However, will this help in my situation and stop rain drop false alerts? My guess is not because rain drops move pretty quick and if I have zones from top to bottom to catch somebody jumping over the fence, that's the same direction a rain drop takes too

ThxView attachment 67984

If you are talking about night time, then a separate IR illumination mounted away from the camera will solve this.

 

[dohat leku]

can you help me understand why a separate IR device will help

 

[sebastiantombs]

The Ir being directly "behind" the lens highlights the raindrops since they, and fog/mist/snow, all appear as opaque due to their reflectivity. Moving the IR off to the side, above or below, will substantially eliminate that reflectivity.

Simple explanation: For the same reason you don't use high beams when driving in fog and snow.