Energy saving elevator apparatus with maintaining potential energy by intellectual control variable mass

A method of operating a variable mass elevator apparatus, comprising:

• providing an elevator shaft;
• providing an elevator car, disposed in the elevator shaft;
• providing a traction sheave, comprising a sheave and a motor;
• providing an elevator cable, coupled to the elevator car and disposed around the traction sheave, wherein the traction sheave rotates and moves the elevator cable and elevator car;
• providing a first floor control panel, comprising a plurality of buttons corresponding to floors of a building, wherein the first control panel is disposed outside of the elevator car;
• providing an electronic scale, disposed in front of the first control panel to weigh a first passenger, wherein the first passenger inputting a first desired floor on the floor control panel stands on the electronic scale when inputting said first desired floor;
• providing a first mass storage area, disposed adjacent to the elevator shaft on an opposite side of an entrance to the elevator car and on the first desired floor;
• providing a first mass, stored in the first mass storage area;
• providing a first mass conveyer, coupled to the first mass storage area on the first desired floor;
• providing a control computer, coupled to the first floor control panel, the first electronic scale, and the first mass conveyer,
• receiving the first desired floor as an input on the first floor control panel and transmitting the first desired floor to the control computer;
• weighing the first passenger using the electronic scale and transmitting a first weight of the passenger to the control computer;
• instructing the first mass conveyer to move the first mass from the first mass storage area to be coupled to the elevator cable, wherein the first mass corresponds to the first weight and acts as a counterweight to the first passenger;
• wherein, when the first passenger is inside the elevator car after the first mass is coupled to the elevator cable, the control computer instructs the traction sheave to rotate and move the elevator cable and the elevator car to the first desired floor.