CV inspection bar

Discussion related to "under the hood" OpenMV topics.
frav
Posts: 12
Joined: Fri Mar 30, 2018 6:12 am

CV inspection bar

Postby frav » Fri Apr 20, 2018 9:16 am

Hello
I am designing a an inspection bar where I need to position up to 50 CAMs in order to cover certain length.
All CAMs need to communicate with a PLC (or PC) to transmit some data acquired.

Can you suggest the best solution to connect and address such amount of devices and how to power them (considering that we are in a industrial environment).

Thnak you
f
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kwagyeman
Posts: 2111
Joined: Sun May 24, 2015 2:10 pm

Re: CV inspection bar

Postby kwagyeman » Fri Apr 20, 2018 12:34 pm

Hi, I'd use a serial to CAN bus bridge... or the CAN peripheral on the STM32. I've never tested the MicroPython code for it though so I don't know how it works. With the bridge... while it's more hardware than you need you'll skip coding issues. E.g. https://www.seeedstudio.com/Serial-CAN- ... -2924.html

As for power, I don't have any notes on that other than it would be a good idea to have a 5V switching reg for each one that are powered by a shared bus... E.g. https://www.cdiweb.com/ProductDetail/RS ... _GEALw_wcB
Nyamekye,
frav
Posts: 12
Joined: Fri Mar 30, 2018 6:12 am

Re: CV inspection bar

Postby frav » Sat Apr 21, 2018 12:01 pm

Thank you.
To connect the CAM to the CAN bus or do I need a transceiver?
I assume the board you suggested is required on PC side. Is it correct?
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kwagyeman
Posts: 2111
Joined: Sun May 24, 2015 2:10 pm

Re: CV inspection bar

Postby kwagyeman » Sat Apr 21, 2018 2:15 pm

The board I suggest gets the OpenMV Cam on the CAN Bus. As for the PC side, I'd use some type of CAN Bus transceiver to USB adapter.
Nyamekye,

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