Elevator system

An elevator system for a structure having a plurality of landings, comprising:

• a plurality of elevator cars,
• means mounting said plurality of elevator cars for movement relative to the landings,
• up and down hall call registering means for registering calls for elevator service in the up and down directions, respectively, from at least certain of the landings,
• averaging means providing a first average responsive to the number of registered up and down hall calls in the structure and the number of in-service elevator cars, and a second average responsive to the number of up and down hall call registering means in the structure and the number of in-service elevator cars,
• and control means controlling the operation of said elevator cars in response to both said first and second averages.

An elevator system for a building having a plurality of landings, comprising:

• a plurality of elevator cars,
• means mounting said plurality of elevator cars for movement relative to the landings,
• up and down hall call registering means for registering calls for elevator service in the up and down directions, respectively, from at least certain of the landings,
• means enabling each of said elevator cars to serve calls for elevator service from predetermined landings such that all of the cars are not enabled for the same landings and service directions therefrom,
• means responsive to which landings each in-service elevator car is enabled to serve, said means dividing the landings of the structure into sets according to the landings served by the same combination of cars,
• averaging means providing a building call average responsive to the number of registered up and down hall calls in the building and the number of in-service elevator cars, a building landing average responsive to the number of up and down hall call registering means in the building and the number of in-service elevator cars, a set call average for each of the sets responsive to the number of registered up and down hall calls in each set and the number of in-service elevator cars enabled to serve each set, and a set landing average for each of the sets responsive to the number of up and down hall call registering means in each set and the number of in-service elevator cars enabled to serve each set,
• and control means controlling the operation of said elevator cars in response to the set call average, the set landing average, the building call average and the building landing average.

An elevator system comprising:

• a building having a plurality of floors,
• a plurality of elevator cars mounted for movement relative to at least certain of said floors,
• call means for registering calls for elevator service from at least certain of said floors,
• car control means for each of said plurality of elevator cars, each of said car control means providing signals indicative of the floors, and service directions therefrom, the associated elevator car is capable of serving,
• and supervisory control means responsive to said call means and to each of said car control means, said supervisory control means including first means grouping the floors served by the same combination of elevator cars into a set, second means determining, for each such set, which elevator car associated with a set should serve a call from a floor of the set, and third means effectively assigning the calls for elevator service to said plurality of elevator cars by providing signals for the car control means of said plurality of elevator cars, in accordance with said second means.

An elevator system for a structure having a plurality of landings, comprising:

• a plurality of elevator cars,
• means mounting said plurality of elevator cars for movement relative to the landings,
• up and down hall call registering means for registering calls for elevator service in the up and down directions, respectively, from at least certain of the landings,
• car control means for each of said plurality of elevator cars, each of said car control means providing signals indicative of the landings, and service directions therefrom, the associated elevator car is capable of serving,
• and supervisory control means responsive to said up and down hall call registering means and to each of said car control means, said supervisory control means including first means grouping the floors served by the same combination of elevator cars into a set, second means determining, for each such set, subject to at least one predetermined limitation, which elevator car associated with a set should serve a landing of the set, third means responsive to the second means, effectively assigning service directions from the landings to said plurality of elevator cars by providing signals for the car control means of said plurality of elevator cars, and averaging means providing a first average responsive to the number of registered up and down hall calls in the structure and the number of in-service elevator cars, with said first average being a limitation said second means is subject to when determining which elevator car should serve a landing.

An elevator system for a building having a plurality of floors, comprising:

• a plurality of elevator cars,
• means mounting said plurality of elevator cars for movement relative to the floors,
• car control means for each of said plurality of elevator cars, each of said car control means providing floor enable signals indicative of floors of the building the associated elevator car is enabled to serve,
• and system control means, said system control means, in response to said floor enable signals, providing signals for the car control means of at least certain of the elevator cars which cause said plurality of elevator cars to provide elevator service for the floors of the building according to a predetermined strategy.

An elevator system for a building having a plurality of floors, comprising:

• a plurality of elevator cars,
• means mounting said plurality of elevator cars for movement relative to the floors,
• means for registering calls for elevator service from at least certain of the floors and service directions therefrom,
• averaging means periodically providing a first average responsive to a predetermined first parameter of the elevator system,
• and system control means periodically dividing the floors and service directions therefrom among the plurality of elevator cars subject to predetermined constraints which include said first average.