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TMP007 issue

Patrick Chen
Mastermind 8875 points
Other Parts Discussed in Thread: TMP007

Hello,

           The register 0x01 we read is 0x0476  and corresponding temperature is 35.68°C. But register 0x03 we read is 0x3DD0 that is very different by object actual temperature. Could I know what is the phenomenon root cause? How can we get real and good accuracy for object temperature? The application is for human body measurement on wrist portion. Thank you.

BR

Patrick

  • 0
    TI__Intellectual 1811 points

    Patrick,

        TMP007 Accuracy in an application like yours is a function of a few things.  First a fixed distance.  If the band is loose fitting the distance and Field of View will change.  The Second factor is FOV  how much of the object is actually taking up the field of view.  If you look at the data sheet you will see that the device unrestricted has a quite large FOV about 180°.  Another factor is calibration. Have you went through a calibration process?  If you collect data and are still having issues, i'm willing to look at you data and you physical setup.  The calibration is all about the physical set up, not the electrical function of the device.

     

    Regards,

    Tommy Santoyo

    MHRS Sensing Apps Team