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TMP006 Sensing Distance

Brett Sutton
Prodigy 40 points
Other Parts Discussed in Thread: TMP006

Hello all,

    After watching the video on the TMP006 sensor solution, I think it is an awesome product for my engineering project. The only thing that keeps me back from buying it is the sensing range. The sensing range seems to be fairly small, but I was hoping for a product that could sense the difference/differences in a whole room. I wonder if that's even possible. I didn't see any spec on the datasheet for sensing distance. What is the sensing distance?

-B. Sutton-

  • 0
    TI__Guru 62085 points

    Hello Brett,

    Could you elaborate a little more on what you mean by:  "I was hoping for a product that could sense the difference/differences in a whole room.

    The sensing distance is quite large assuming that the desired object that you're measuring temperature of occupies the majority of the field of view of the TMP006.  The final temperature result of the TMP006 conversion is an integration of all of the temperatures in it's field of view.  Therefore if you're asking if you would be able to tell the differences in temperature of different objects in a room, the answer is "no".  The final TMP006 result will be an integration of all of the radiant IR energy in the field of view of the TMP006 (likely the whole room) which will depend on the temperatures and emissivities of the objects in the room.

    Best Regards,
    Collin Wells
    Precision Analog

  • 0 in reply to Collin Wells
    Prodigy 40 points

    Hi Collin,

        Thanks for the help. Basically, I wanted to be able to measure the surface temperature of foreign objects (difference from the rest of the room) entering the sensor's field of view upon detection. Detection may be a little beyond the scope of what can be done efficiently since a microcontroller needs to poll the TMP006 continuously, and I am shooting for low-power. Correct me if I am wrong, but I have yet to see a digital IR sensor that can wake-up the microcontroller. However, I think the TMP006 may be very useful for other parts of my application.

    -Brett Sutton-

  • 0 in reply to Brett Sutton
    TI__Guru 62085 points

    Hello Brett,

    Depending on the size of the room, a person entering the room may only change the final integrated temperature of the TMP006 by a fractional amount because the majority of the signal would still come from the rest of the surfaces in the room which are likely at ambient temperatures. 

    You are correct that our digital IR sensor can not wake up a microcontroller due to temperature changes.  I'm not sure about other products out there.

    Regards,
    Collin Wells

  • 0 in reply to Collin Wells
    Prodigy 90 points

    Is it possible to detect Temp's in a distance of  max. 150cm?  Is it possible when I attach a Lens?

    I want to build up a low-cost thermo cam for a project in my company.

  • 0 in reply to Ersan
    TI__Genius 16080 points

    Ersan,

    The issue is size of the object versus distance.  Without any optics involved, the recommendation is that the distance from the TMP006 be a maximum of 1/2 the diameter of the object being measured.

    You can use optics to modify this equation, but how low cost and the distance is still dependent on the size of the object being measured.

  • 0 in reply to DHarmon
    Prodigy 10 points

    Hi there, I want to use the TMP006 to measure ground surface temp (water, soil, foilage) from a UAV flying at 60 - 120m (90 -180 ft.) altitude. Is that a feasible application or would the sensor be irritated too much by volume of surrounding air?

  • 0 in reply to Nils Lalleike
    TI__Expert 7945 points

    Hello Nilis,

    TMP006 is not a viable option for you application due to distance(60m), filed of view restrictions and variable target objects in the system(soil,water,etc). Thanks for looking into this device and I will feed your application back to my team to find out a possible alternative.

    Regards,

    Abhi

  • 0 in reply to Abhishek Muppiri
    Prodigy 120 points

    hi there
    I wonder which is the range of distance that the sensor works TMP006

    thanks, greetings 

  • 0 in reply to fernandezctere
    TI__Genius 16080 points

    There is not a simple answer to this question - it it very application and desired outcome dependent.  As Collin sates above:

    The sensing distance is quite large assuming that the desired object that you're measuring temperature of occupies the majority of the field of view of the TMP006.  The final temperature result of the TMP006 conversion is an integration of all of the temperatures in it's field of view.  Therefore if you're asking if you would be able to tell the differences in temperature of different objects in a room, the answer is "no".  The final TMP006 result will be an integration of all of the radiant IR energy in the field of view of the TMP006 (likely the whole room) which will depend on the temperatures and emissivities of the objects in the room.

  • 0 in reply to DHarmon
    TI__Intellectual 1811 points

    Hi,

       Just wanted to chime in a little.  Keep in mind that  this device is a thermal pile with an AFE.  With optics, and mechanical considerations this device can take on more applications. Fundementally alot of these applications are  possible.  They are not easy.  They require the skills of an optical/mechanical engineer.  Take a look at things like Winton Cones, Fresnel lenses, field of view restrictors, and magnification lenses...etc.

     

    Tommy