Elevator control system and method

Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support

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Details

B66B 116

Patent

active

041934784

ABSTRACT:
A method and apparatus for controlling the movement of one or more elevators in a hoistway. The apparatus includes a power control sub-system containing moving machinery for imparting motion to the elevator car and to the elevator car doors, together with a plurality of control contacts operating to actuate the moving machinery to urge the elevator car and the doors in appropriate directions. A number of selectable control contacts or switches are provided in the elevator car and at elevator floor landings. A supervisory control sub-system containing control programs is coupled to the power control sub-system for the purpose of reading input data from the moving machinery, control contacts, and selectable switches, and to provide instructions to the power control sub-system in accordance with the supervisory control programs, and the status of the selectable switches and the control contacts. The supervisory control sub-system includes a data memory for storing the input data, a program memory for providing ones of a plurality of predetermined program instructions, and a data processor serially storing data, addressing the program memory, reading the instructions, fetching stored data, and providing output control signals to the power control sub-system. The elevator car and door motion is controlled in accordance with the output control signals.

REFERENCES:
patent: 3747710 (1973-07-01), Winkler
patent: 3774729 (1973-11-01), Winkler
patent: 3791490 (1974-02-01), Smith
patent: 3851734 (1974-12-01), Sackin
patent: 3857077 (1974-12-01), Kasmer
patent: 4037688 (1977-07-01), Winkler
patent: 4069898 (1978-01-01), Tosato et al.

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