Patent ID: 6241050
Filing Date: 2001-06-05
Classification: B66B

Abstract:
An elevator control apparatus comprising:elevator assignment means for assignment of one elevator, from a plurality of elevators, to respond to an elevator hall call received from an elevator floor button;service enable time calculating means for calculating a service enable time, which is a predicted arrival time, for each of the plurality of elevators to determine which of the plurality of elevators can respond to the elevator hall call fastest;deviation calculating means for calculating a deviation index from a distribution of the service enable times calculated by said service enable time calculating means, the deviation index being at least one of mean value, standard deviation, and maximum value of the distribution of the service enable times;transportation determining means for determining if transportation of an elevator is necessary, based on whether the deviation index calculated by said deviation calculating means exceeds a threshold;transportation specifying means for specifying a designated elevator and a designated floor which would most reduce the deviation index when said transportation determining means determines that transportation of an elevator is necessary; andtransportation instruction means for sending a transportation instruction to the designated elevator to transport the designated elevator to the floor.