Very Low Cost Accelerometer DAQ

[jorgeinchains]

Hi to all,

I want to implement a Very Low Cost Accelerometer DAQ for a modal analysis. I Have a PCI-6013 DAQ and a want to that the capabilities of my hardware system will be:
1.- IEPE compatible.
2.- Alti-alias filtering.
3.- Simultaneous Sampling (SS).

I was thinking in a SCC signal condition system with a SC-2345 and SCC-ACC01 hardware that carry out with the first two point listed. But I do not how to get the SS. It must be using a CA-1000 with SC-2040?. They are compatible with SC-2345?. Exist other solution for this aplication that do not overcome the USD$ 2000. and that will be compatible with my PCI-6013?.

Please, if anybody can help me I will be very grateful.

[AlanArmstead]

The SC-2345 is good for your accelerometers, and the SC-2040 is an option for achieving simultaneous-like sampling with sample and hold circuitry, but I don't think you can use them together. Do your samples have to be truely simultaneous? The PCI-6013 has a maximum convert clock rate (the clock that switches between channels) of 200kHz. So your samples would be only 5 micro seconds apart. Is that too much? Otherwise, to get truely simultaneous accelerometer samples, you are probably looking at an SCXI solution (which can't be used with B Series, like the 6013) or a simultaneous multifunction DAQ board (S Series).
-Alan A.

[Ian_Ren]

If you do not need more than 4 channels, then PCI 4474 may meet all your technical and budget requirements.

We use NI 447X a lot for our NVH applications, including FRF measurement.

Regards

Ian

Roush Industries