using labview to meausre the strain

[labview software used to measure strain]

Hi,
I am Neelima,a GRDUATE RESEARCH ASSISTANT in EE.I am working on a project to measure the strain using the labview software.I have 4 scxi1520 modules and 1314 terminal blocks.I have created a front panel in labview to measure the strain for 32 channels.But I have a problem in running the front panel.can any one send me an example front panel in labview to measure strain.My front panel has 32 switches for 32 different channels,and lead resistance,excitation voltage,bridge voltage,shunt calibration and graph to measure strain.i would like to know weather any one has an example front panel to measure strain and what modifications should i make.
thank you
sincerely
NEELIMA

[LV_Pro]

Can you include some of your code? If you "save with options", development distribution and then "zip" the file it will help.

P.M.

[Hal_L]

Hi Neelima,

There are some examples for measuring strain in LabVIEW and on the National Instruments website.

If you are using DAQmx:
- Go to Help>>Find Examples>>Hardware Input and Output>>DAQmx>>Analog Measurements>>Strain
If you are using traditional DAQ:
-Go to Help>>Find Examples>>Hardware Input and Output>>Traditional DAQ>>Solutions>>Transducer
Measurements
-Go to Help>>Find examples>>go to the search tab>>search for "strain"

To find the strain examples on National Instruments website:
1. go to www.ni.com/support
2. choose example code under option 3
3. search for strain

Regards,
Hal L.

[labview software used to measure strain]

Hello LV_Pro,
        This the front page i have designed in labview to measure strain for 32 different channels.If my front page needs any modifications let me know.i have been using scxi1520 modules and 1314 terminal block.The three terminal blocks are wired as quarter bridge and i need to configure another terminal block as full and half bridge.if there are any front panels close to mine let me know.
thank you
in anticipation
sincerely,
Neelima, Research Assistant.

[labview software used to measure strain]

Hi,
       This is Neelima. I am attaching the front page i designed for to
measure
the strain.I have a question that is,i would like to know wether the
strain

readings my front page is reading is correct or not.How can i compare
the
strain readings i get.As you can see in the front page there is a shunt
calibration,by default i placed the resistance as 100000ohms.should i
change
that value to get accurate measurments.please let me know if my front
page
needs any modifications.
thanking you
sincerely
N.Neelima
Graduate Research Assistant, EE.
south dakota school of mines and technology
nagotu_n@yahoo.com

[Hal_L]

Hi Neelima,

I took a look at your code.  The values in your code match the default values from the "Continuous Acquire Strain Samples (With Calibration) Example, which is a great example for the SCXI 1520.  A lot of these values are going to be system specific for your application, but the values in the example that you attached all seem normal.  Do you have reason to believe your readings are not accurate?

Here are a couple of links that you may find helpful:

SCXI-1314 Terminal Block Calibration Procedure: This document contains information and step-by-step instructions for verifying the value of the shunt-calibration resistors

Measuring Strain with Strain Gauges

Regards,

Hal L.