Cars/floors and calls/cars elevator assignments

Details Cars/floors and calls/cars elevator assignments Cars/floors and calls/cars elevator assignments

1981-10-02

1983-08-30

Truhe, J. V.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 120

Patent

active

044011903

ABSTRACT:
An elevator system employs a microprocessor-based group controller to control the service of a group of elevator cars to a plurality of floor landings in a building. The group controller includes zone-control type operation, including up peak traffic handling, down peak traffic handling, and distributing of cars around the building during periods of low traffic or no demand, when in a cars-to-floors mode of operation. The group controller can assign any unanswered call to any car in the builing, in dependence upon factors relating the desirability of assigning any call to a car, in a calls-to-cars mode of operation. The group controller is in the cars-to-floors mode of operation whenever there is up peak traffic conditions, down peak traffic conditions, or no registered hall calls, provided that the cars-to-floors mode of operation cannot be entered into as a consequence of no registered hall call until at least one car is located at the lobby. In the event there is no lobby car, or no car call or hall call forcing a car to the lobby, a lobby call is forced and the calls-to-cars mode of operation is continued until a car becomes located at the lobby. Exemplary elevator apparatus including a microprocessor-based group controller, as well as computer program logic flow diagrams illustrative of an overall group controller program, as an environment for the present invention, and illustrative of detailed implementation of an exemplary embodiment of the invention, are disclosed.

REFERENCES:
patent: 4037688 (1977-07-01), Winkler

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