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Arduino Forum Is there a sensor that can be used for detecting a dead human body?
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Is there a sensor that can be used for detecting a dead human body?

rcmf123
rcmf123 over 8 years ago

Does the dead human body still emit infrared? Will sensors like omron d6t still work?

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Top Replies

  • dougw
    dougw over 6 years ago +3
    I think smell is the best current method (using cadaver dogs). It might be possible to design a sensitive smell detector using ion mobility spectroscopy, but it is a pretty big research project.
  • robogary
    robogary over 4 years ago in reply to vandia +3
    just to be OCD :-) corpses dont get cold, they get to room temperature, maybe a bit above by heat generated by decomposition. Zombies on the other hand do measure just a touch over room temperature since…
  • rsc
    rsc over 8 years ago +2
    A heart rate monitor would probably tell you if you're dead.
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  • vandia
    vandia over 8 years ago

    I think it may be possible. AFAIK, the OpenCV processes on the final image(s), not the stream itself. You'd just have to export the video from the drone into whatever device you plan to run OpenCV on to process the images. Again, that's best to my knowledge, but since OpenCV is about finding certain patterns in images, I don't think it really matters what the source is.

     

    For infrared, I think a dead body stops typically emitting heat within 6 hours. IR is *mostly* a bi-product of heat compared to it's surroundings. That heat mostly dissipates, so for IR to work, it would need to be within a short time of whatever "disaster" you're "relieving". Also note other things can produce IR besides just bodies or heat.... Television remotes in example. I'm not sure how much IR refracts or is absorbed by some materials, but if it does, you may end up looking in an empty building do to refraction. And, again, A log can absorb sunlight and show up on an IR sensor, due to the heat, IIRC. I just feel there's much that can go wrong with attempted something automated with IR alone.... though can can use OpenCV and process the IR images and/or dual screen the video for different feeds simultaneously. I've done such myself, so it shouldn't be difficult if you're already learning it.

     

     

    Good luck!

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  • vandia
    vandia over 8 years ago

    I think it may be possible. AFAIK, the OpenCV processes on the final image(s), not the stream itself. You'd just have to export the video from the drone into whatever device you plan to run OpenCV on to process the images. Again, that's best to my knowledge, but since OpenCV is about finding certain patterns in images, I don't think it really matters what the source is.

     

    For infrared, I think a dead body stops typically emitting heat within 6 hours. IR is *mostly* a bi-product of heat compared to it's surroundings. That heat mostly dissipates, so for IR to work, it would need to be within a short time of whatever "disaster" you're "relieving". Also note other things can produce IR besides just bodies or heat.... Television remotes in example. I'm not sure how much IR refracts or is absorbed by some materials, but if it does, you may end up looking in an empty building do to refraction. And, again, A log can absorb sunlight and show up on an IR sensor, due to the heat, IIRC. I just feel there's much that can go wrong with attempted something automated with IR alone.... though can can use OpenCV and process the IR images and/or dual screen the video for different feeds simultaneously. I've done such myself, so it shouldn't be difficult if you're already learning it.

     

     

    Good luck!

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