how to convert voltage to temperature (Using LabVIEW Digital Toolkit)

[LVDev_Recife]

Hi,

I'm using Labview Express 7.0 and I would like to know how to convert voltage to temperature. I´m using a Flir S-45 Infrared camera with Digital Toolkit. I know there´s a vi called "Emissivity RawArrayToTemperatureArray" which may help but I´m not sure this is the correct path to follow.
So, is there anyone who can help me  to solve  this  problem?

Many Thanks

Cesar Abreu

[mikeporter]

I'm a bit confused, you are asking how to convert a voltage to a temperature, but your device is a camera so are you really wanting to convert an image pixel value to a temperature?

Mike...

[RavensFan]

It's always interesting when a new member posts their first question only about half an hour after creating their username in the forum.  Its usually a good idea to spend some time in the forums reading other questions to see how things are typically done.  Then maybe they would know to actually have a subject line that makes sense when compared to the question asked in the message.

[LVDev_Recife]

I´m working with an Infrared camera and using Labview to design a new software to control main feature´s camera. So I´m interested in the radiation power arriving the camera sensor (irradiance). In other words, I want to perform the corrections by myself, taking into account the atmospheric attenuation and object reflection with our equations.

When I bought the camera and the Digital Toolkit from FLIR, I was said one of the main advantages of this system was the capability of obtaining the radiometric image.

Furthermore, we are having problems with the Digital Toolkit. We are obtaining in Labview one image called "raw". But, what are the units of this image? Volts?
Is so, how to convert these information to W/m2 arriving the sensor?

In resume, we would like to know how to obtain the radiometric image onthe sensor.


Cesar Abreu

[Shazlan]

I'm not sure whether you are still working on this or not, but what the heck.

There's an example given by FLIR, which you can refer to - I think it is called ImageGrad IMAQ_Digital. Basically, once you have captured the raw images, you will need to use FLIR's VI to obtain the Look-Up Table (LUT) to convert the raw images into thermographic images.

The problem I am facing now is how to save the captured images into 'radiometric jpg'. Anyone?