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At present,people want to control accurate time every moment. But the time of waiting the elevator is uncertain,because you don't know which floor will be stop.The feeling of waiting the elevator is not good. This design can tell us that how long we'll wait before the elevator is coming. As to the man who wait in the lower floors, it maybe a better choice to take the stairs if the time is very long.
Wuhan University of Technology
Wuhan, China
Feng Xinling ，Zhuang Yuan，Chen Zhou，Feng Yiyang,
Wuhan University of Technology
