Group control for elevators with double cars

Details Group control for elevators with double cars Group control for elevators with double cars

1984-08-06

1986-04-15

Shoop, Jr., William M.

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

045821739

ABSTRACT:
A group control for elevators in which the allocations of the individual cars of double cars in an elevator group to stored floor calls can be optimized with respect to time, and newly occurring floor calls can be assigned immediately. A computing device is provided for each elevator to calculate operating costs of each car corresponding to the waiting and delay times of passengers at the floor and aboard the car with regard to each floor. The operating costs are reduced if unidirectional calls exist on the calculation floor and on a directly adjacent floor, and/or if coincidences of car calls and such floors occur. The operating costs of the two cars of a double car are compared with one another and the smaller costs are stored in a cost memory. During a cost comparison cycle, the operating costs of all elevators are compared with one another floor by floor via a comparator, whereby an allocation instruction is stored in an allocation memory of the elevator with the smallest operating costs. The allocation instruction designates the floor to which the car is assigned optimally with respect to time.

REFERENCES:
patent: 3625311 (1971-12-01), Nowak et al.
patent: 4355705 (1982-10-01), Schroder et al.
patent: 4411337 (1983-10-01), Schroder et al.
patent: 4448286 (1984-05-01), Kuzunuki et al.

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