Patent ID: 6439349
Filing Date: 2002-08-27
Classification: B66B

Abstract:
A computer implemented method for assigning a new hall call to one of a plurality of elevator cars in an elevator system, wherein the cars are capable of stopping at a plurality of elevator landings and wherein the elevator cars may have existing car calls and existing hall calls, the method comprising:receiving a new hall call signal, the new hall call signal originating at an elevator landing; for each car, determining a call cost (â€œCCâ€ ) for accepting the new hall call as follows: (a) inferring a destination and calculating an estimated time to the inferred destination (â€œETIDâ€ ); (b) calculating a system degradation factor (â€œSDFâ€ ) for each elevator car's existing hall calls and car calls; and (c) calculating the call cost (â€œCCâ€ ) value according to the following equation: CC=&Sum;k=1n&it;SDFk+ETIDwherein the elevator car has a quantity of n existing car and hall calls (k); and assigning the new hall call to the elevator car having the lowest call cost.