differentiate: Plastic - Metal - Paper - Organic waste (Sensor Selection)

Discussion in 'General Electronics Chat' started by Matias Morsa, Sep 26, 2016.

  1. Matias Morsa

    Thread Starter New Member

    Sep 26, 2016
    1
    0
    which sensors I can use to differentiate these materials:
    - Plastic
    - Metal
    - Paper
    - Organic waste
     
  2. kubeek

    AAC Fanatic!

    Sep 20, 2005
    4,670
    804
    Maybe some form of spectroscopy?
     
  3. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,346
    Hello,

    There are to many possibilities.
    Think of how many plastics there are : PVC,PE,HDPE,ABS etc.
    https://en.wikipedia.org/wiki/Plastic
    Think about how many metals there are : copper, iron, gold, silver etc.
    https://en.wikipedia.org/wiki/Metal
    As for the paper, there are glossy, coated and raw papers(like in newspapers).
    https://en.wikipedia.org/wiki/Paper
    What kind of organic waste are you thinking of?

    When using the method @kubeek mentioned, you will need reference spectra for the comparisson.

    Bertus
     
  4. GopherT

    AAC Fanatic!

    Nov 23, 2012
    6,043
    3,807
    Typically, two major methods of separating recyclables. hand sorting as material passes on a conveyor belt AND/OR grinding/milling process followed by some type of air classifier (wind sifter) or other buoyancy/momentum technique. Paper and plastic bags are difficult to separate and significant overlap occurs.

    Machine vision is growing in use but only at the biggest sorting centers.
     
  5. hp1729

    Well-Known Member

    Nov 23, 2015
    1,951
    219
    English Lit students, poets, music majors ...
     
    nsaspook, #12 and GopherT like this.
  6. GopherT

    AAC Fanatic!

    Nov 23, 2012
    6,043
    3,807
    That post was the best of the week!
     
  7. #12

    Expert

    Nov 30, 2010
    16,284
    6,797
    See the deletions @ronv? :oops: I told you that kind of joke was not acceptable on this site.:D
     
    GopherT likes this.
  8. ronv

    AAC Fanatic!

    Nov 12, 2008
    3,290
    1,255
    I'm so confused! I can't remember what I said. :(
     
  9. #12

    Expert

    Nov 30, 2010
    16,284
    6,797
    I'm the person who did a crude joke about The Donald. You just asked me to please do it.
    I said it wasn't acceptable here, and some moderator(s) decided I was correct.
     
  10. ronv

    AAC Fanatic!

    Nov 12, 2008
    3,290
    1,255
    Whew, I really couldn't remember saying anything bad.:oops:
    But I really did want to hear it! :rolleyes:
    Can you PM it to me?
    By the way. Shame on you! :D
     
  11. #12

    Expert

    Nov 30, 2010
    16,284
    6,797
    You missed the joke? PM done.
     
    ronv likes this.
  12. ronv

    AAC Fanatic!

    Nov 12, 2008
    3,290
    1,255
    Shame on me! I should have known. :rolleyes:
     
Loading...