Elevator control system using continuously updated data base and flow class values

Abstract From the Canadian patent

A method for controlling an elevator group in which statistical data on a traffic flow within an elevator group, representing the times, local and total volumes of the traffic, and a number of different traffic types used in a group control are stored in a memory unit belonging to the control system. The traffic flow is divided into two or more traffic components, the relative proportion or different traffic components and the prevailing traffic intensity are deduced from the traffic statistics the, traffic components and traffic intensity i.e. the traffic, factors, are subjected to assumptions whose validity is described by means of membership functions of the factors. A set of rules which …