Abstract: An elevator operating system includes an abnormality detector for detecting an abnormal door opening of an elevator car, a response limiting circuit which is responsive to the detection of the abnormal door opening to limit the response to car calls and floor calls for the elevator car, a re-execution circuit for re-executing the door opening of the elevator car detected as being abnormal, and a releasing circuit for releasing the limitation of the response to the car and floor calls in response to no detection of the abnormal door opening during its re-execution.

Abstract: A control apparatus for elevators in which one cycle of a fluctuating demand is divided into a plurality of sections, the demand in each section or a service condition value of the elevators for the demand is measured, the demand or the service condition value of the corresponding section is estimated from the measured value, the estimated value is compared with a measured value obtained anew, so that when both the values have not been decided to differ greatly as the result of the comparison, cages may be controlled by the use of an estimative value obtained by considering the measured value obtained anew, whereas when both the values have been decided to differ greatly as the result of the comparison, the cages may be controlled by the use of the estimated value obtained without considering the measured value obtained anew, and measurement value analyzing means is comprised for analyzing the measured values differing greatly from the estimated value, in the same section, so that when a permanent change in t

Abstract: An elevator control system for operating the cage of an elevator wherein the cage is run from one floor to the next floor at which it is to be stopped with a minimum amount of energy consumption. Energy consumption estimating circuits produce estimates of the amount of energy required for the cage to run to the next floor at which it is to be stopped for a plurality of different maximum cage speeds. The outputs of the energy consumption estimating circuits are coupled to a minimum value selecting circuit which determines which of the energy consumption estimating circuits has produced the lowest estimate. The elevator cage is then run at a speed profile and at a maximum speed chosen in correspondence with the minimum energy consumption.

Abstract: A group supervisory system of elevator cars is provided which has a waiting time estimating function for estimating the waiting time at each floor and a waiting time evaluating function for giving a predetermined weight to the output of the estimating function.