Re: Diagnosing and overcoming GigE camera freezes

[John Dobbins via Tech-talk <tech-talk at aps.anl.gov>]

> Have you considered using ADAravis instead?

I haven't. I will look into that. Thanks.

John

---

From: Henrique F. Simoes <henrique.simoes at lnls.br>
Sent: Friday, May 23, 2025 2:04 PM
To: John Dobbins <john.dobbins at cornell.edu>; Tech-talk at aps.anl.gov <Tech-talk at aps.anl.gov>
Cc: Eduardo Pereira Coelho <eduardo.coelho at lnls.br>; christopher.gregory at stfc.ac.uk <christopher.gregory at stfc.ac.uk>
Subject: Re: Diagnosing and overcoming GigE camera freezes

 

On Thursday, May 22, 2025 6:03 PM, John Dobbins <john.dobbins at cornell.edu> wrote:
> At CHESS we use GigE cameras from Allied Vision. These also stop on occasion.
> We have been struggling to figure out if it is temperature or radiation.

We also use a pair of Allied Vision cameras (Alvium G1-500c) for microscopes
here, out of radiation areas. We have noticed that they sometimes misbehave and
get out of the network as well. However, this often happens when users are
interacting with them, like change gain, exposure time, and swapping from
single to continuous capture modes (or vice-versa). We still couldn't figure
out how to reproduce it, though. This way less frequent than for Basler
devices, though. I recall this happening only thrice last year.

> They also seem significantly more likely to fail on power cycle, i.e. they are
> working and then there is a power outage (scheduled or unscheduled) and we
> discover multiple cameras dead.

Interesting. I don't think we have seen this.

> We happen to use some of these cameras on computer which has multiple IP
> addresses assigned to one NIC.  This causes a significant memory leak in the
> Allied Vision driver which requires us to restart those IOCs weekly, but this
> is a pretty unique case.

Have you considered using ADAravis instead?

> For the few cameras that are critical to operations we have  a watchdog base on
> image count. This at least lets us handle the interruption more gracefully.
>
> John Dobbins
>
> Research Support Specialist
> Cornell High Energy Synchrotron Source
> Cornell University
>
> https://nam12.safelinks.protection.outlook.com/?url="">

Thanks!

--
Henrique F. Simões
Control Software Group (SwC)
Brazilian Synchrotron Light Laboratory (LNLS)
Brazilian Center for Research in Energy and Materials (CNPEM)

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