Elevator system having dynamically variable door dwell time based upon average waiting time

摘要

Disclosed are me and apparatus for establishing a Door Dwell Time for an elevator car. The method includes the steps of (a) accumulating, over a first interval of time, a total amount of time that expires between a time when a hall call is received to when an elevator door of the elevator car opens in response to the hall call; and, at the end of the interval of time, (b) determining an Average Waiting Time (AWT) by dividing the total amount of time by a number of hall calls that occurred during the first interval of time. The method further includes the steps of (c) comparing the AWT to a first AWT threshold value; and, if the AWT exceeds the first AWT threshold value, (d) decreasing the elevator car Door Dwell Time (DDT) by a time increment so as to obtain a revised DDT for use during a second time interval. If the AWT does not exceed the first AWT threshold value, the method further includes the steps of (e) comparing the AWT to a second AWT threshold value; and if the AWT is less than the second AWT threshold value, (f) increasing the elevator car DDT by the time increment so as to obtain a revised DDT for use during the second time interval.