Method and apparatus for the group control of elevators with dou

Details Method and apparatus for the group control of elevators with dou Method and apparatus for the group control of elevators with dou

1989-10-26

1991-02-19

Pellinen, A. D.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 118

Patent

active

049935186

ABSTRACT:
In a group of elevators with double cars, the assignment of such double cars to floor calls takes place at scanner positions .alpha. in two procedural steps, according to two parameters: primarily by assignment of the individual cars of all double cars by logical decision, according to a criteria chain (KK), and subsidiarily by assignment of the double cars according to the minimal loss time of all involved passengers. The individual elevators each have a microcomputer system with a calculating device and are connected with each other by way of a comparator circuit to form a group control. The optimal individual cars are assigned for each elevator by floor in the associated individual car/call assignment memories. The optimal double car is selected by comparison of the loss times of all elevators calculated as the total operating costs K.sub.g (.alpha.) and is assigned to the respective floor in the associated double car/call assignment memory. For the total servicing costs K.sub.g (.alpha.), a special cost calculating algorithm is provided. With the separate assignment of individual cars and double cars, this group control renders possible a complete utilization of the double car functions as well as a good matching to different operating and traffic conditions. At the same time, the minimal waiting time of the passengers is optimized.

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patent: 4655325 (1987-04-01), Schroder
patent: 4718520 (1988-01-01), Schroder

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