Building relational databases with PXI RT targets

[hervend]

I'm currently developing a real-time acquisition system consisting in a PXIe-1082 chassis in which are inserted:

  - PXIe-8133 controller

  - PXIe-6366 ADC

  - PXI-7852R FPGA card

  - PXI- 8260 hard drive disks

Since the data are continuously acquired during weeks, months and even over years, they should be easily accessed through a database.

Another constraint deals with the ability for the system to perform field measurement and store the data even when the ethernet network is not always avaIable.

This implies constructing the database directly on the RT target. I discovered on this tutorial http://zone.ni.com/devzone/cda/epd/p/id/6287 a way to solve the problem on VxWorks RTOS... on CRIO RT targets. But this solution doesn't work on PXI RT targets since the OS is PharLap.

Is there anybody who has already dealt with this problem and developed a solution which could be helpful for me?

Additionnally, I would like to store this database on the additional HDD (PXI-8260) present in my system configuration. But the fact that these disks are not visible from the RTOS (but only from windows OS) prevents me from using them to store anything.

How could I workaround?

Best regards,

Hervend

[josborne]

This sounds interesting.  I'd be curious how you solve this challenge.  Here are a couple links that might be helpful:

http://zone.ni.com/devzone/cda/tut/p/id/3245

http://zone.ni.com/devzone/cda/tut/p/id/3221

Keep us posted!

[hervend]

Hello Josborne,

Thank you for these links. As you mentioned, this subject is very interesting and I would like to solve this challenge as soon as possible. If any step is made forward, I will provide you with the details.

Best regards,

Hervend