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[on:]

Hi , all

I am doing a final year project for temperature measurement in the automotive oven.
Arduino is to be used for controllling data with 8 channels connecting to 8 thermocouples.
Now the problem is I want to collect data in a .txt file immediately after arduino board get the data. Or if it is possible, I want all the data to be collect in spreadsheet.

So if anyone please suggest me how to do so?

In addition,  Can anyone suggest any website for buying an insulated box to keep the suitable environment for arduino borad to be put in the high temperature area please?

Thanks

[Reply #1 on:]

Now the problem is I want to collect data in a .txt file immediately after arduino board get the data. Or if it is possible, I want all the data to be collect in spreadsheet.

Saving the data as a file is going to require some kind of file storage device and software. Typically, this is an SD card and appropriate library.

Getting the data into a spreadsheet can involve removing the SD card from the Arduino and inserting it into a PC, and opening the appropriate file using a spreadsheet application. Or, it can involve streaming the data real-time into a spreadsheet application. For Windows OS, this is possible. GoBetwino is one way. There are plugins for Excel that allow it to be fed data via the serial port, in a more direct fashion.

Can anyone suggest any website for buying an insulated box to keep the suitable environment for arduino borad to be put in the high temperature area please?

No, and I wouldn't recommend it. The Arduino should go outside of the hot area, with just the thermocouple wires going inside.

[Reply #2 on:]

Hello Pauls

Thank you very much for helping me. But the oven is very very big in size so if i extend thermocouple wire that wire should be at least 5 m. long.

Therefore i think it quit messy around the area of experiment. Moreover, our supervisor wants us to put the board inside then take it out to get data. Right now i am struggling with EEPROM. Try to get data from it but I realised that if i don't connect it with computer to display serial monitor. All data will not be recorded in EEPROM with will be a trouble since i can't take my laptob inside the oven as well.

For SD card, do i need to plug it with computer all the time?

[Reply #3 on:]

I think this will clear most of your storage questions

[Reply #4 on:]

Thx you very much
 i will check that  ^^

[Reply #5 on:]

Hello Pauls

Thank you very much for helping me. But the oven is very very big in size so if i extend thermocouple wire that wire should be at least 5 m. long.

Therefore i think it quit messy around the area of experiment. Moreover, our supervisor wants us to put the board inside then take it out to get data. Right now i am struggling with EEPROM. Try to get data from it but I realised that if i don't connect it with computer to display serial monitor. All data will not be recorded in EEPROM with will be a trouble since i can't take my laptob inside the oven as well.

For SD card, do i need to plug it with computer all the time?

A thermocouple setup requires a cold junction.  If all your electronics is at an elevated temperature then you won't have a cold junction and the thermocouple will read zero.   What a thermocouple circuit really is is a heat engine, with the temperature _difference_ driving the electric current to do work.

There are two approaches to the cold junction.  The more accurate way is to actively keep the cold junction at a fixed reference temperature (ice point of water perhaps).  The less accurate way is to measure the ambient temperature of the thermocouple electronics with a separate device and compensate for its variation. 

If the electronics is run at an elevated temperature then a different technology is needed.  If above 100C or so then reliability will drop rapidly (and if thermal cycling reliability will fall even more).  Mil spec parts can help at the higher temperatures, but really its not the way to do things.