Otis Elevator Company

Shanghua Yang

Heping Qiu

An elevator-calling device and elevator system. The elevator-calling device includes a processor to receive an input instruction and send a signal to a main controller of an elevator system; a display device connected to the processor; a rotatable button, wherein the rotatable button is connected to the processor, and the rotatable button is pressable and rotatable in a first direction and a second direction opposite to the first direction, and wherein the rotatable button has an initial zero scale; and an assistant sound generating unit connected to the processor; wherein the processor is configured to have an assistant elevator-calling mode, in which a preset target floor is increased when the rotatable button rotates in the first direction, the preset target floor is decreased when the rotatable button rotates in the second direction, and the preset target floor is confirmed when the rotatable button is pressed at a non-zero scale.

Growing community of inventors

Shanghai, China

Shanghua Yang