Communicate the Double is soon the Elevator PLC Control System
Abstract:Elevator is the general name for the vertical(elevator)slant (escalator) or horizontal (moving walk) moving transportation means.It is the elevator that marked the skyscrapers possible. By 2002,the number of elevator had reached 6.35 million, number of escalators and moving walks had reached 250,000.Elaevator has become a very important transportation means in modern life. The requirement for safety, efficiency and comfort pushed the elevator technology to develop quickly.
The elevator control underwent the process of handle contol, button control, signal control, and collective selective control . The parallel connection control and intelligent group control are used to control more than one elevator .
Now , the elevator companies are endeavorting to develop new elevators , to perfect the repair maintenance network to meet to needs of people .
Key Words: elevator;possible;transportation;safety;the process of handle contol,