Hi Nilson,
On Thu, Feb 07, 2019 at 10:17:19AM +0100, Nilson Pereira via Tech-talk wrote:
>
> I have 3 cameras (Point Grey GigE Blackfly) that I want to use
> simultaneously at a very low framerate (1fps) for BPM purposes.
>
> Each camera has its own IOC and they run perfectly one at a time.
> However, when running simultaneously, always 2 cameras conflict with
> each other and not necessary the same two cameras. During conflict, the
> IOC shows an error about frame inconsistency on both affected cameras. I
> have a gigabit network port on both switch and server, and the port is
> far from saturation.
>
> Does anyone have experience with GigE cameras and have seem this type of
> problem? Is this a protocol issue since it happens even with the
> original (Flycap2) software ?
>
> I appreciate any shared experience with problems with GigE cameras that
> could give a hint on why this is happening.
>
We have seen similar issues with Blackfly cameras. A few things we have
done to attempt to resolve it:
- put each camera on its own network port. We have a setup with two
cameras connected to a single host, where each camera network port is
configured as a different private network (e.g., 192.168.1.1/24 and
192.168.2.1/24). This helps segregate network traffic and avoid the
packet collisions and losses.
- ensure the camera and network port MTUs are set to 9000.
- if you have switch between the host and the cameras, check that it is
permitting Jumbo packets on the relevant ports.
- look at the FLIR knowledge base documents for configuring the network
receive and RX ring buffer sizes: http://www.ptgrey.com/KB/10016
After setting things up this way, we have two cameras running at 10 fps,
with only minimal 'Image consistency' errors.
Hope that helps.
Wayne
> Best,
>
> Nilson
>
>
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--
Wayne Lewis
e: [email protected]
w: http://ospreydcs.com
p: +1 631 905 1964
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