Get_snapshot is not responding

General Questions
1

Hello,

Sometimes the camera is not responding from a quality control application based on Python and CVB,

We need to restart the PC which holds the Alvium USB camera.
It’s a 24/24 5/7 days, with 600 images per day.
We have 1 or 2 issues per day with app blocking.
That’s a big issue because the production is stop.

Code to get the picture, the time_out seems to have any effect:
self.stream = self.device.stream()
image, status = self.stream.get_snapshot(time_out)

We have updated the camera driver (Alvium) with the last version available with no change.

Does someone has already got this issue and know how to solve it?

More details:

  • Windows 10
  • Python 3.8
  • CVB 13

Thanks a lot for your help

Regards

2

Hi @ThierryBachmann

As the camera is not responding and it is not enough to stop your application the camera and / or the driver could be in a strange state which then results in a blocking application.

With updated driver you probably mean you updated to the newest Vimba version including a newer Allied Vision USB Driver? And then you use the AV Transport Layer within CVB? If you did not update the Firmware of the camera it is worth updating it as well.

As you are using an old CVB 13 it also make sense to update to the newest CVB 15 to ensure that you have the newest fixes and optimizations.

If you still encounter issues that the camera is not responding at all, you should contact our technical support.