Schedulers for Multi must be fun - I'm sure they must have employed a whole research group for solving this problem. Scheduling simple elavator systems is still a problem nowadays, this one? It's so much harder.
ThyssenKrupp Multi – world’s first rope-free elevator [video]
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Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#72Kind of reminds me of IP packets, but of people not bits. They could even travel underground from building to building and then we would have an internet of elevators transmitting packets of people (hopefully with reliable delivery and no dropped packets).
Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#73Earlier quoted context omitted.
you can have dedicated up and down shafts where the cars move horizontally only at the top and bottom, like a ferris wheel. without having them move horizontally at any floor. you just need a way to disconnect the rope (like ski lifts). or you can have towing cars that have only 50 ft of rope and operate on rails (like ships that get towed through Panama locks)
That means that all cars must traverse the entire distance and that all cars must wait each time a car reaches a floor.
> That means that all cars must traverse the entire distance
with a lot of cars in uni-directional shafts, is this really an issue?
> all cars must wait each time a car reaches a floor
maybe solved by a 2-lane shaft with a passing lane. very doable with rails or towing cars.
Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#74So many negative comments for a Saturday. This is a marvel of engineering and deserves a celebration. Humbled by our ability to re-invent more and more. Well done to all involved.
I hope HN could avoid mindless cheering and positivity related to technology matters. Negative or positive comments that only express private feeling should be discouraged. They reduce the value of the discussion.
Interesting technological discussion means criticizing.
Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#75This will be how we build towers twice as tall as existing megatowers. As beautifully explained by xkcd[0], "If your building has lots of floors, you need lots of different elevators, since there would be so many people trying to come and go the same time. If you make a building too tall, the whole thing gets taken up by elevators and there's no space for regular rooms." But if one elevator shaft can have multiple in…
The car motion is not independent and it's hard to use the capacity well. Consider the morning rush in a big office tower when everyone starts on the ground floor. You can only use the bottom car to move these people.
You need a sideways dimension of movement to avoid this problem.
Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#76So many negative comments for a Saturday. This is a marvel of engineering and deserves a celebration. Humbled by our ability to re-invent more and more. Well done to all involved.
Indeed! It reminds me of the root foundations of a TurboLift from Star Trek.
I always thought that they used the vacuum of space to accelerate and decelerate those
Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#77The big benefit is that you get more than one elevator per shaft. For skyscrapers the amount of floor space wasted by elevators grows exponentially by the number of floors.
Say you have a 5 story building that needs a one shaft elevator. 5 floors tiles 100 sqft per floor is 500 sqft of wasted shaft space. Then say you have a 10 story building that needs two shafts. Now you are wasting 10 floors times two shafts or 2,000 sqft. And so on.
An old and terrifing solution to this was to use two shafts and run a continuous loop of open door elevators.
Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#78So many negative comments for a Saturday. This is a marvel of engineering and deserves a celebration. Humbled by our ability to re-invent more and more. Well done to all involved.
I feel like they didn't really do much to motivate this.
Some of the comments here about increasing throughput provide clearer motivation - they do show this super briefly in the video with elevators operating in a cycle, but the benefits didn't really click.
Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#79Reminded me of CPU interconnects.
crossbar
Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]
#80Schedulers for Multi must be fun - I'm sure they must have employed a whole research group for solving this problem. Scheduling simple elavator systems is still a problem nowadays, this one? It's so much harder.
Nothing a little deep learning can't solve. Right? Right guys?