Group control for elevators with immediate allocation of target calls in dependence on the hall call entry location

A group control apparatus for elevators with immediate allocation of target calls in dependence on the call entry location on a floor includes call registering and indicating devices located on the floors and having a keyboard for the entry of calls for desired target floors, floor call memories associated with the elevators of the group and connected with the call registering and indicating devices wherein on the entry of a call on a floor, a call identifying the entry floor and a call identifying the target floor are stored in the floor call memories, computers associated with the elevators of the group wherein each computer computes operating costs corresponding to the waiting times of passengers from data specific to the elevator, an operating costs register connected with the computer, a comparison device connected to the operating costs register, and call allocation memories associated with the floor call memory, wherein the operating costs are compared one with the other and the floor call concerned is allocated through entry of an allocation instruction into the call allocation memories to that elevator car which has the lowest operating costs, and wherein the elevator concerned and its position are indicated on an indicating field of the actuated call registering and indicating device immediately after the call allocation comprising:

• an additional memory for storing times needed by a passenger to traverse the paths between an actuated call registering and indicating device and the shaft doors of an allocated elevator car for each elevator car of an elevator group;
• a comparator having inputs connected to an output of said additional memory and to an output of a travelling time memory for an associated one of the elevator cars;
• and
• an operating costs register connected through a switching device to a comparison device, said comparator having an output connected to an activating lead of said switching device whereby for an elevator car travelling time stored in said travelling time memory and dependent on the car position and the call input floor and being less than the time needed by a passenger to move from an actuated call registering and indicating device to the shaft door of the elevator concerned, said switching device disconnects said operating costs register from said comparison device and the associated elevator car is excluded from a comparison of operating costs.