Acceleration Measurement with LabVIEW FPGA

[Ngoan]

Hello everyone,

I was made LabVIEW Project to collect acceleration data from PCB accelerometers, Compact Rio system (Chassis NI 9074, Module NI 9234). I doubt that their is something wrong with the vi project since the measurement value is very small although I really felt the vibration of the floor where I meassured the vibration.

Could you please take a look at my Labview project to see if there is something wrong. I really appreciate any comments.

Thanks,

Ngoan

[mikeporter]

So what do you think is wrong? No data? incorrect data?

Mike...

[Ngoan]

Hi,

I think the data is incorrect. The highest value is just 0.04 m/s2 but I feel the floor vibrates quite highly. I expected the value should be higher than what I saw e.g. 0.04 m/s2

[mikeporter]

In that case, go through your logic looking especially at any scaling or signal conditioning you are doing. Any chance there is a known vibration source around?

Mike...

[Ngoan]

Hello Mike,

I think the problem may be due to the scaling in my ni code. For example, the first accelerometer (its sensitivity is 0.1058 V/(m/s2)) is attached to the first channel of NI 9234. I just simply devide the output from each channel in the module ni 9234 into the acceleration sensitivity.

You can see in the attaced picture. 

Thanks,

Ngoan