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Show HN: Elevators

john.fun

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Re: Show HN: Elevators

#291

Post by close04 »

csomar wrote: post #288
ehsankia wrote: post #283

Earlier quoted context omitted.

I don't understand why the fact that it's an Airbnb really matters here? Unless a large number of apartments are meant to be empty, why does it matter if the tenant is short term or long term? Is it that short term users leave and enter their apartment more often?

Because they are short-term and many are staying just for the day + bringing family (like kids, which is why they use AirBNB instead of a hotel). The check-in/check-out already add an entry-exit if the user is staying 24 hours only.

It’s not super common to stay in one place only 24h when traveling with kids. Other than the luggage, tourists and residents move in an out of the building just the same. People who live there also need to go to work or school every morning, and come back in the afternoon creating choke points. And these people are there every day, not a handful of seasonal tourists.

The problem is probably the same as every other super tall building. It was impressive for the potential buyers but designed poorly and this only became apparent after they lived there a while (crappy elevators, probably often defective, building sway, plumbing issues, etc). So the owners started to move out and it’s possible the building is mostly short term rental now.

Re: Show HN: Elevators

#292

Post by donalhunt »

icosian wrote: post #287
darkwater wrote: post #141

Earlier quoted context omitted.

Yeah, and definitely is not the right story for hotels. His premise of "morning traffic mostly from lobby to floors" is completely false in an hotel where you get it both ways due to people going down for breakfast and going back up and the down once again. I see hotels with the kiosk model changing the UI depending on breakfast rush hour

> Yeah, and definitely is not the right story for hotels. The first time I encountered Destination Dispatch was in a London hotel, maybe 15 years ago. Anyone unfamiliar with the system would naturally sprint towards an open elevator and end up in an elevator with no buttons, totally bewildered. It's not the right system for a transient population.

Maybe they were embracing YOLO - who knows the possibilities of putting your trust in others' decisions / destinations.

Or should it be YORO? You only ride once?

Re: Show HN: Elevators

#293

Post by donalhunt »

esikich wrote: post #220
vova_hn2 wrote: post #177

Earlier quoted context omitted.

> Is it because the criteria is wait time not travel time? Yeah, it doesn't make any sense to optimize wait time instead of total time from pressing the button to reaching destination.

It very well could be the case that people get more upset about waiting for the car than total travel time when they are already in the car. Ie, pick them up sooner even if travel time is longer. In fact, I would bet that this is the case.

Having chatted with friends who have gotten stuck in elevators, you definitely should care about total travel time.

In one case, the building was still being commissioned and it took a while for anyone to even realize they were stuck (could spawn a whole discussion about launch processes in itself).

Re: Show HN: Elevators

#294

Post by userbinator »

what wrote: post #69
tamimio wrote: post #57

Earlier quoted context omitted.

Because most buildings now they just put one button so people stop clicking both

What? I’ve never seen that. The elevator needs to know which way you want to go.

It doesn't; it just needs to know it was called. You make your selection once it arrives.

Look up the early history of elevators and you'll see a progression from fully manual in-car up/down controls (often with a dedicated human operator); various semi-automatic systems with minor improvements like automatic leveling and door control; and then operatorless systems that started with nondirectional calls:

https://liftescalatorlibrary.org/paper_indexing/papers/00000...

Re: Show HN: Elevators

#295

Post by userbinator »

userbinator wrote: post #235
tamimio wrote: post #57

Earlier quoted context omitted.

Because most buildings now they just put one button so people stop clicking both

Nondirectional calls are mostly found in very early (pre-war) or small building (3-4 floors) installations.

Please see: https://liftescalatorlibrary.org/paper_indexing/papers/00000...

"2.3 Non-directional collective Non-directive collective control provides a single pushbutton at each landing. This pushbutton is pressed by passengers to register a landing call irrespective of the desired direction of travel. Thus, a lift travelling upwards, for example, and detecting a landing call in its path stops to answer the call, although it may happen that the person waiting at the landing wishes to go down. This type of control is only acceptable for short travel lifts."

Re: Show HN: Elevators

#296

Post by woeh »

ehsankia wrote: post #283
woeh wrote: post #266

I 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 el…

I don't understand why the fact that it's an Airbnb really matters here? Unless a large number of apartments are meant to be empty, why does it matter if the tenant is short term or long term? Is it that short term users leave and enter their apartment more often?

I am of course just speculating (and I had a lot of waiting time to think about this), but there are a lot of people with a lot of luggage constantly going in and out. It makes the elevators be full faster (perhaps there is a weight based sensor to determine if the elevator is full, and the luggage tricks the system into thinking the elevator is not full yet, because a piece of luggage is lighter than a person but sometimes takes up more floor space than a person). Furthermore, people with luggage take longer to get in and out.

It's a tower in Kuala Lumpur btw. Since it is rather hot here and the elevators are not airconditioned, it's extra uncomfortable.

Re: Show HN: Elevators

#297

Post by krishna180 »

An elevator that stops at every other floor is quite annoying. Someone pressed a button and then entered another elevator. just like in door, there shall be a sensor as well that will check if someone is waiting outside or not. if not, please pass that floor.

Re: Show HN: Elevators

#298

Post by Terr_ »

shepherdjerred wrote: post #241
pimlottc wrote: post #232

Earlier quoted context omitted.

This is case where you need to make sure your test data reflects real-world usage or you end up optimizing for the wrong thing. Ideally a new elevator installation would have a trial period where they record usage and then run it through a simulator like this to determine the optimal strategy for that particular building. And you'd want to re-run it every once in a while as the building tenants/usage changes. I wonde…

I wonder if we'll see LLM elevator scheduling

Then it'll be time to make an entirely new software accreditation system, simply so that anyone building such a thing can be disbarred/excommunicated.

Re: Show HN: Elevators

#299

Post by userbinator »

perpetuallunch wrote: post #280
woeh wrote: post #266

I 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 el…

Or, the building / owners corp / code / city could simply ban short stay accommodation where it was never attended. I would not want to be in that building if an evacuation alarm sounded.

I would not want to be in that building if an evacuation alarm sounded.

You are not supposed to use the elevator in emergencies.

Re: Show HN: Elevators

#300

Post by npodbielski »

How people do such nice animation? Is there is some nice program you can use? I looked and I could not find anything that seemed really easy to use. Llms can sometimes generate something usefull and sometimes something attrocious. I remember few months back article where someone create animation of how 3.5" 1.4MB disk is build, somebody asked about this in the comment and author said it was done mostly by hand. While this is impressive it would be cool to be able to draw some animation for work prestnation that looks nice but also so I do not have to spend 3 days crafting something like that. Would be nice to draw few of them in my blog too. Any recommendations?
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