Just letting everyone know. Still working on this one, want to make it a tutorial like I did with the day BUT every day its been snowing so just waiting for that to clear and will get this last video out the door. Thanks
Review: IDahua DH-ITC-437-PW6M-IZ-GN / LPR-437 - ALPR/ANPR - Traffic & Access Control Camera
- Thread starter Wildcat_1
- Start date
I have found two bugs that affect one of my LPR-437s
1) When the camera is rebooted the video I Frame Interval changes from my 30 back to its default 60.
2) Twice, the camera has needed to be rebooted. It appeared to be operating correctly but never triggered on any cars. I could see in the Configure(LPR) screen that it was recognizing both cars and plates. Nothing new would appear in the live display, search results, or ftp directory. Reboot and it would start working correctly again. This has not reoccurred since I set the camera to reboot once a day.
This plus the video problem mentioned above has me leaving the IFR at 60 (every two seconds). I have not seen the need to reboot the second camera.
1) When the camera is rebooted the video I Frame Interval changes from my 30 back to its default 60.
2) Twice, the camera has needed to be rebooted. It appeared to be operating correctly but never triggered on any cars. I could see in the Configure(LPR) screen that it was recognizing both cars and plates. Nothing new would appear in the live display, search results, or ftp directory. Reboot and it would start working correctly again. This has not reoccurred since I set the camera to reboot once a day.
This plus the video problem mentioned above has me leaving the IFR at 60 (every two seconds). I have not seen the need to reboot the second camera.
Attachments
Quick update. The ‘random reboot’ issue I reported up front to Dahua Dev as I saw this early on in testing. The more I push the cam, the more I see this. I’ve tested across a large number of enterprise grade POE switches and varying known good cables and it persists so I’ve followed back up with them again on this and made Andy aware. Could be something like a memory leak causing reboot, current FW allowing point of resource exhaustion etc is what I’m looking into at the moment. Saw it again last night when I attempted to restart the night testing. Just keeping you all updated and will provide another update when I hear back.
Robert G.
Getting comfortable
I have not noticed any reboot of my camera. Not sure what you mean by pushing the camera, but I am doing 3000+ captures a day with mine.
A number of tasks at once with multiple streams being sent to different platforms. Noticed the reboot on 2 different units. Cam will just all of a sudden reset even though POE power is good.
It’s definitely a case of perfect storm where sometimes you’ll get a good run without issues and then at times will reboot by itself when moving through multi lane caps and access functionality in test or sometimes seemingly simple tasks. Like I said could be memory leak / resource exhaustion but seeing situations where it causes this issue. Therefore reported. Acknowledged by Dahu dev now so they are investigating the feedback, logs and code area I highlighted.
My camera did not reboot itself, I manually restarted it after I noticed it was no longer triggering. I could see it tracking a car and its plate through the FOV, but it never would trigger. For several hours no new plates or cars would show up in a search or on the ftp server. Restart and and the trigger worked again.
I’ll see if I can mock up yours on the test unit as well but I haven’t seen the issue you’ve spoken about in my testing.
Last edited:
Got another bug - the cameras keeps spamming my ftp server multiple times per second.
The home directory for this account is the ANPR directory that the camera keeps (successfully) changing to.
The camera ftp settings are:
I don't see anything that I could have set up wrong. The actual file transfers are correctly transmitted and stored.
The home directory for this account is the ANPR directory that the camera keeps (successfully) changing to.
The camera ftp settings are:
I don't see anything that I could have set up wrong. The actual file transfers are correctly transmitted and stored.
Couple of quick updates on the reboot and video situation:
1 - Found a potential race condition in code which I've made Dahua dev aware of. As I mentioned above, definitely a perfect storm situation but does exist so made aware so they can address
2 - This test unit has other issue exacerbating reboots as well, looks to be board connection so that is what it is and I'm sure isolated just to this unit so not concerned about that, just have to treat it gently
3 - Night video update. After snow finally dissipated I took some video again last night and will start editing this over the next few days. Will update when ready and that will conclude the test of this model
Thanks
1 - Found a potential race condition in code which I've made Dahua dev aware of. As I mentioned above, definitely a perfect storm situation but does exist so made aware so they can address
2 - This test unit has other issue exacerbating reboots as well, looks to be board connection so that is what it is and I'm sure isolated just to this unit so not concerned about that, just have to treat it gently
3 - Night video update. After snow finally dissipated I took some video again last night and will start editing this over the next few days. Will update when ready and that will conclude the test of this model
Thanks
Please include some of the results while it was snowing - always interesting to see edge cases. My cameras seemed to perform almost as well with rain as on clear days/nights. But I would image snow to be much worse.
Timokreon
Getting comfortable
My experience with snow wasn't very good. Considering I'm still dialing in this camera, etc.. my experience could very well have been user error.
On a side note, I have found another use for this camera. It seems birds like to sit on top of the camera during bad weather. lol...
All, just an update, been heads down in editing and pleased to say the night test / tutorial is almost complete. Tried to cram as much info as I can into this one to assist those watching it. As always though, reach out with questions either via the comments on the video or DM here. For those that did ping me, I will be getting back to all of you. Will post another update once encoded and then uploaded/available
All, as promised here is the night test and tutorial for the ITC-437. As I mention, very capable camera but you do need to dial this one in carefully due to a) the 4MP sensor needing more light than its 2MP predecessor b) there is NO day/night schedule so you have to set a happy medium setting to cover both situations (same as 237) and c) this version does NOT currently have separate IR intensity setting for ‘Vehicle Pass’ meaning you cannot have IR adjust down at night when object pass close to camera that you could on the 237.
Remember to watch in 4K on YouTube.
Remember to watch in 4K on YouTube.
Timokreon
Getting comfortable
Got a capture with one of the new 3m plates. I can "kind" of make this out, but sheeze... these new plates suck.
Thanks for the review wildcat1. Looking good. There's a few tips in there I'm going to try out in the next few days to see if I can clear up things a little bit.
How about motorcycles? I'm now catching some of the plates on the right side of my NVR picture layout, but it just shows a blank picture, and it doesn't actually record under the "Motor Vehicle Detection" area under AI Search.
Thanks for the review wildcat1. Looking good. There's a few tips in there I'm going to try out in the next few days to see if I can clear up things a little bit.
How about motorcycles? I'm now catching some of the plates on the right side of my NVR picture layout, but it just shows a blank picture, and it doesn't actually record under the "Motor Vehicle Detection" area under AI Search.
Attachments
Evening all!
Been messing around with the device a little before placing it in its final spot and had a question when it comes to the "search" tab, I am getting "The browser does not support plugin and the image cannot be displayed properly. try IE or Chrome 42 / firefox 52 or below". So i tried IE and firefox 52 and it still didnt show any photos when you click on a image entry.
Has anyone had success viewing past snapshots?
Been messing around with the device a little before placing it in its final spot and had a question when it comes to the "search" tab, I am getting "The browser does not support plugin and the image cannot be displayed properly. try IE or Chrome 42 / firefox 52 or below". So i tried IE and firefox 52 and it still didnt show any photos when you click on a image entry.
Has anyone had success viewing past snapshots?
Timokreon
Getting comfortable
Where are you attempting to view the snapshots from? SD card on the camera itself, or ??
From the onboard SD card.
Timokreon
Getting comfortable
Gotcha. I don't have a SD card installed so can't help you out. Perhaps one of the other folks can chime in.