Using the CUI32 as a thermometer and voltage controller

Hi,

I am pretty new to doing work like this, but I want to use a PT-100 RTD to measure the temperature of a system, then use an analog output from the CUI32 to switch a relay on and off. I was thinking of using LabView, or MaxMSP, to set up the I/O program. I want to be able to measure 2-4 different temperatures and control 2-4 voltages.

Does anyone know if this would be possible? Or if the CUI32 would be the appropriate thing to buy for this project?

Thanks, sorry about my lack of knowledge regarding these tools. I do have a software programming background, but haven't really worked with hardware IO streams or firmware...

Let me know if anyone has any thoughts!

Sachin

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Permalink Reply by Dan Overholt on February 15, 2011 at 5:22pm

Hi Sachin,

This sounds like a project you could do entirely with StickOS BASIC, unless you really want to use LabView or MaxMSP... a good example that you could expand upon (to do your 2-4 temperature readings and control outputs) is the Toaster Oven Temperature Profile Controller here:

http://cpustick.com/examples.htm

Cheers,

Dan

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Permalink Reply by sachinmoonat on March 13, 2011 at 3:21pm

Hi Dan,

Thanks for the response. I think that I would like to use LabView to run the project because I want to use the PID toolkit to drive the output rather than a simple negative feedback loop.

Does the CUI32 integrate with LabView fairly easily? I am assuming that if I want to measure the resistance of an RTD or thermistor using the CUI32, I will need to make a bridge circuit on the board.

I am familiar with LabView programming, and have used some of the NI DAQs. Would data acquisition through the CUI32 be a similar process to using other DAQs?

Thanks,
Sachin

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Permalink Reply by Antonio Benci on March 14, 2011 at 10:19am

Using Labview with the CUI32 is very easy. Simply configure Labview to accept the CUI32 as a serial terminal device. Using the 'input' statement on the CUI32 will allow you to send commands to the board. The 'print' statement will reply back to Labview.