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Detecting Falling Objects with a LiDAR

  1. Apr 19, 2015 #1
    I am experimenting with a LiDAR system, one of my goals is to detect falling objects. The scanning frequency is 100Hz with an angular resolution of 1°. I have been able to detect an object if it is a certain size or greater moving horizontally but I'm not sure what I should focus on to make sure that it will see an object falling vertical as it scans horizontal.
     
  2. jcsd
  3. Apr 19, 2015 #2

    mfb

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    Where do the objects fall?
    If you can just scan a narrow horizontal line, I guess you'll miss some objects that fall through faster than your scanning frequency.
     
  4. Apr 19, 2015 #3

    davenn

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    rotate the LIDAR so it is vertical

    do you need to detect speed of the falling object or just that it is there ?

    if just that it is there ... why use a LIDAR ?

    tell us more about what you are trying to achieve ... as in explain you project clearly

    Dave
     
  5. Apr 19, 2015 #4
    I would like to detect if objects are being thrown over a balcony, edge, bridge, etc... but I would also like to avoid false positives such as a bird.
     
  6. Apr 20, 2015 #5

    davenn

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    in an open area ... that is going to be virtually impossible
     
  7. Apr 20, 2015 #6

    mfb

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    Well, most birds have a motion different from falling objects, but I don't see why a LIDAR would be used. A conventional camera and some image processing looks easier.
     
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