application help

[j.p.]

I would like to know, how can I include a write to spreadsheet.vi application to a bock diagram in which there are 9 thermometers, each one connected to a DAQ assistant, and each one have their own chart to see the behaviour of temperature vs time.  This application is to take temperature measurements between stages of a thermal resistance network, requested as a final project for my heat transfer course. If there is any suggestion I will thank you a lot for all the help provided.

J.P

[j.p.]

Maybe I havent explained myself in English so well so Im going to explain my situation in Spanish,

OK mi situacion es la siguiente, tengo 9 termometro que estan conectados a un DAQ assistant, y cada termometro sale tambien a un "chart", todo esta dentro de un "while loop", pero quisiera poder pasar todos los datos a un hoja de Excel para poder hacer una comparacion de temperatura vs tiempo para poder realizar un proyecto final de curso donde estamos utilizando un circuito de resistencia termal. cualquier ayuda que me puedan brindar sera bienvenida.


Gracias adelatntadas,

J.P.

[Dennis_Knutson]

First of all, you only need one DAQ Assistant. Just define multiple channels to acquire. Then you can use the split channel  function to wire up your separate charts. You can also wire the unsplit signal from the DAQ Assistant to the Write LabVIEW Measurement File. This will create a file that can be read by Excel.

[j.p.]

Thanks D.Knight, but I tried what you told me but I still having problems, I forgot to say that I'm collectin temperatures with thermocouples type K, I also tried with the write labview measurment.vi and it writes it, but I would like to get the information like if it was on a table, thats why I first tried with the "write to spread sheet"

thanks again,

J.P.

[Dennis_Knutson]

All of the different file write functions (Write LabVIEW Measurement File, Export Waveforms to Spreadsheet File, Write to Spreadsheet File) write 'tables'. The differences are in the header and column information. The reason I suggested Write LabVIEW Measurement File is that you can wire the dynamic signal data from the DAQ Assistant (still use only one) directly without having to do a conversion. How are you configuring the DAQ Assistant (i.e. number of samples), how often do you want to save? What else do you want in the file besides the measurements?

If you can post what you've written so far, it would help to see where you are having having problems. Just saying you have a problem doesn't help if you don't explain exactly what the problem is.

[Dennis_Knutson]

The picture below shows a very simple acquisition of multiple channels and a file save when the loop completes. The DAQ Assistant is set up for multiple channels (four in this case) and it does a single scan every 500 msec.

Message Edited by Dennis Knutson on 04-24-2007 12:36 PM