Elevator group control system

An elevator group control apparatus for an elevator system where a plurality of cars can move in each shaft independently of each other, comprising:

• a destination floor registration device which is installed at each hall and registers destination floors and indicates to passengers which cars will respectively respond to serve registered destination floors;
• zone setting means for setting priority zones and a shared zone for upper cars and for lower cars;
• entrance judgment means for judging whether entrance of the shared zone set by the zone setting means by an upper car or a lower car is permitted;
• safety standby means for putting a car on standby based on a judgment of the entrance judgment means;
• withdrawal means for withdrawing a car to a withdrawal floor, as necessary after a service is completed by the car;
• assignment candidate selecting means for selecting a car as a candidate for assignment to a destination call generated at a hall if, according to the destination to be served by each car and the zones set for each car, the car would cause neither a collision nor a safety stop;
• and
• assignment means for finally determining which car to assign based on selection by the assignment candidate selecting means.