Defining the traffic mode of an elevator, based on traffic statistical data and traffic type definitions

Claim 1

A method for controlling an elevator group of a building according to a preferred traffic rule, based on recognition of a current traffic pattern, wherein said elevator group is provided with a group control and a plurality of elevator controls, said method comprising the following steps: (a) continuously measuring, collecting and updating traffic data obtained with a plurality of floor and car detector devices, and forming in a memory unit of the elevator group control a statistical data base for the elevator group, said statistical data base comprising said traffic data grouped on a daily basis at predetermined moments of time; (b) defining as traffic factors at least two traffic components describing the traffic flow direction and position in the building and a traffic flow direction and position in the building and a traffic intensity, generating and storing in said memory unit a set of membership functions of the traffic factors and a standard set of traffic rules for the elevator group, and continuously calculating and updating said traffic factors from the updated statistical data base and storing said updated traffic factors in the memory unit, grouped at said predetermined moments of time; (c) determining a current value for each of said traffic factors from said updated traffic factors and determining a fuzzy value for each of said current traffic factor, by use of said set of membership functions; (d) substituting said fuzzy values into each of said traffic rules defined in step (b) to obtain a current set of traffic rules; (e) assigning fuzzy values to said current traffic rules according to said traffic factors and said membership functions; (f) selecting said preferred traffic rule according to a preset interpretation of a best traffic rule describing the current traffic situation; and (g) processing said preferred traffic rule into said elevator group control and monitoring said plurality of elevator controls in accordance with the current traffic data and said preferred traffic rule.

Claim 2

A method for controlling an elevator group of a building according to a preferred traffic rule, based on recognition of a current traffic pattern, wherein said elevator group is provided with a group control and a plurality of elevator controls, said method comprising the following steps: (a) continuously measuring, collecting and updating traffic data obtained with a plurality of floor and car detector devices, and forming in a memory unit of the elevator group control a statistical data base for the elevator group, said statistical data base comprising said traffic data grouped on a daily basis at predetermined moments of time; (b) defining as traffic factors at least two traffic components describing the traffic flow direction and position in the building and a traffic flow direction and position in the building and a traffic intensity, generating and storing in said memory unit a set of membership functions of the traffic factors and a standard set of traffic rules for the elevator group, and continuously calculating and updating said traffic factors from the updated statistical data base and storing said updated traffic factors in the memory unit, grouped at said predetermined moments of time; (c) determining a current value for each of said traffic factors from said updated traffic factors and determining a fuzzy value for each of said current traffic factor, by use of said set of membership functions; (d) substituting said fuzzy values into each of said traffic rules defined in step (b) to obtain a current set of traffic rules; (e) assigning fuzzy values to said current traffic rules according to said traffic factors and said membership functions; (f) selecting said preferred traffic rule according to a preset interpretation of a best traffic rule describing the current traffic situation; and (g) processing said preferred traffic rule into said elevator group control and monitoring said plurality of elevator controls in accordance with the current traffic data and said preferred traffic rule.