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OT: Elevator Algorithm

Discussion in 'Electronic Design' started by Jim Thompson, Sep 8, 2006.

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  1. Jim Thompson

    Jim Thompson Guest

    Having spent the last two days attending meetings in a high-rise, I
    was musing...

    What algorithm is used to ensure that the elevator door that you are
    standing in front of WILL NOT BE the one that opens ?:)

    ...Jim Thompson
     
  2. An algorithm? I thought is was a reflection of the natural law that makes
    the probability of encountering a cop (or a prostitute, or a car salesman)
    an inverse function of your desire for one.
     
  3. Its a sensor they use that tell's the elevator to only stop on empty floors.
    :)
     
  4. In message <>, dated Thu, 7
    Murphymorphic resonance. Just like in the 'three doors' problem, you can
    improve your chances of success by switching to another door after
    waiting 20 seconds. (;-)
     
  5. What do you dial to get the apostrophe police? Is it 9'1'1'?
     
  6. Guest

    It's an adaptive algorithm that depends on the algorithm YOU use to
    select which door to stand near. The better your algorithm is, the
    better the elevators are at opening a door you're not standing near.
    But think of all the algorithmically-challenged people who stood near
    the "wrong" elevators, whom you helped.

    - Tom Gootee

    "He who lives in a glass house should not invite he who is without
    sin."
     

  7. How about when you walk up to a bank of four elevators just as they
    all open at the same time? It was really weird. Of course it was a
    government building.


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  8. That only happens if you stand *exactly* in the center equidistant from
    all four. The system cannot inconvenience you, so it tries to confuse you.
     
  9. Hmmm.

    The elevators are cursed and one of the three will take you directly
    to the sub-sub-sub-basement furnace as part of the pact that
    Government made in return for power without reckoning ;-)
     
  10. Guest

    Obviously the elevator system must have thought that you either didn't
    care or weren't going to use an elevator. :)

    - Tom Gootee
     
  11. Mark Fortune

    Mark Fortune Guest

    And then the one you move towards closes.
     

  12. It was at the VA hospital in Gainsville. The only reason to be where
    I was, was to use an elevator. They were in a small bay off the main
    hallway. ;)


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     

  13. I was already at the lowest level in the building, just around the
    corner from the canteen. ;)


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     


  14. No, they are all set for the handicapped, so most of the time people
    end up pushing the "Close Door" button to reduce the wait time if no one
    is coming.


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     

  15. Nice try, but they opened just as I came around the corner, into the
    elevator bay at the hospital. It reminded me of making the hour long
    drive home from work one night and having all 27 traffic lights green,
    when I rarely saw more than five green lights. That happened only the
    one time in my four years of working for UVCI on night shift in
    Cincinnati, Ohio.



    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  16. Joerg

    Joerg Guest

    Hello Jim,

    That would be the Murphy algorithm.
     
  17. Guest

    all three of ours would only come to one floor for a fire alarm.
    dont get me started on the "fuzzy logic" controller, or how in a 13
    story building, if your downbound, its often faster to get on the
    upbound one and wait for it to reverse, then to wait for the car you
    pushed for. Of course it will then stop first at the floor you got on
    at.

    Steve Roberts
     
  18. Oppie

    Oppie Guest

    you missed you chance to try this one out for making the elevator non-stop
    http://www.eeggs.com/items/12697.html

    Oppie
     
  19. Nico Coesel

    Nico Coesel Guest

    Can we stop this topic? Someone with a sadistic mind already invented
    that and implemented it in a hospital. As a bonus that person made the
    doors close very soon after they opened. I had to use a plant to stop
    the doors so I could push my grandfather + wheelchair into the
    elevator.
     
  20. What floor was it, 7 1/2 ?

    Cheers
     
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