Elevatorpedia is a fun read. I particularly enjoy reading about service modes, such as the Sabbath service (hands-free operation).
Show HN: Elevators
261–270 of 426 posts
Re: Show HN: Elevators
#262For folks that have never seen elevator scheduling the game: https://play.elevatorsaga.com/ Enjoy this rabbit hole :D
This is great, but to me, the definitive elevator scheduling game was SimTower.
I never really "got" sim tower growing up, I liked sim city but bounced off tower. It only clicked years later when I read that it was an elevator simulator that got fleshed out a bit, Knowing this I enjoy it quite a bit more today than younger me who I guess was expecting a vertical simcity.
Re: Show HN: Elevators
#263How often do people travel between non-ground floors though? In my own experience, whether it's a residential or an office building, 99% of elevator usage is a) someone going down to the ground floor, and b) someone going up from the ground floor. There are some exceptions like hotels that have amenities on different floors though.
The first elevator "algorithm", if you can even call it that, that I've ever encountered and that seems intuitive to me, is what Soviet relay logic elevators did. If it's not in use and someone calls it, it goes there. If it's in use, it will collect the calls on its way down (and ignore them on the way up, these had no up/down call buttons). It's surprisingly effective for apartment buildings.
Re: Show HN: Elevators
#264This article didn't consider two very important optimizations: 1. Odd-even split with all-floor backup. 2. Low/High floor split.
Re: Show HN: Elevators
#265How often do people travel between non-ground floors though? In my own experience, whether it's a residential or an office building, 99% of elevator usage is a) someone going down to the ground floor, and b) someone going up from the ground floor. There are some exceptions like hotels that have amenities on different floors though. The first elevator "algorithm", if you can even call it that, that I've ever encounter…
In mine it is far from 99%. I’d say maybe 50%.
Re: Show HN: Elevators
#266I am currently staying in an AirBnB of a 60 floor tower, and the three elevator shafts definitely cannot handle this (I don't think the building was designed with renting to tourists in mind). The elevators are frequently completely saturated during weekends, meaning that the elevator stops at each floor, but noone can get in because the elevator is already full. This means the backlog of people wanting to use the elevators is increasing until after rush hour, and I have at one time experienced a waiting time of over half an hour.
What I take from this is, elevators need a proper check to see if they are full, and if so skip floors.
Re: Show HN: Elevators
#267Finally someone looked at frustrating problem. What if lift manufacturers install all the algos and change the algo based on need?
Re: Show HN: Elevators
#268I have never understood why it’s not possible to deselect a floor once you’ve pressed the button.
Re: Show HN: Elevators
#269How often do people travel between non-ground floors though? In my own experience, whether it's a residential or an office building, 99% of elevator usage is a) someone going down to the ground floor, and b) someone going up from the ground floor. There are some exceptions like hotels that have amenities on different floors though. The first elevator "algorithm", if you can even call it that, that I've ever encounter…
It depends on the building use. In residential buildings, people do tend to go to / from ground but in my building the parking garage has entrances on levels 1-4, the gym on 3-4 and the garden on 5. That distorts the traffic pattern.
The company where I work occupies an entire office building, so there is lots of travel between floors.
Re: Show HN: Elevators
#270I have never understood why it’s not possible to deselect a floor once you’ve pressed the button.
It’s a sensible request, but we just don’t have the technology to do it.