Patent ID: 6021870
Filing Date: 2000-02-08
Classification: B66B

Abstract:
An elevator control system comprising:a plurality of elevator cars, each elevator car having a position detector, a traveling direction detector;a car information indicating apparatus including,a plurality of hall call buttons, each hall call button generating a hall call signal upon activation;a plurality of car controllers, each car controller including a central processing unit and a dual direction communication device for outputting elevator car position information signals, elevator car direction traveling signals, and hall call signals;a communication line operatively linking the plurality of car controllers, whereby transmitting and receiving coded messages can be executed serially;a plurality of signal relaying devices being operatively linked together by said communication line, each signal relaying device being capable of transmitting and receiving the coded messages to and from the plurality of car controllers via said communication line, each signal relaying device decoding the coded messages, each signal relaying device being capable of generating clock signals and receiving request messages from a respective hall call button, said plurality of signal relaying devices operatively linked in parallel substantially reducing hardware associated with each respective hall call button;a plurality of car position indicators, each car position indicator operatively linked to a respective signal relaying device to receive decoded messages relating to elevator car position information; anda plurality of car traveling direction indicators, each car traveling direction indicator operatively linked to a respective signal relaying device to receive decoded messages relating to elevator car directional information.