Elevator system

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

• a plurality of elevator cars having doors operable between open and closed positions,
• means mounting said plurality of elevator cars for movement relative to the floors,
• means for registering requests for elevator serivce for at least certain of the floors,
• car control means for each of said elevator cars, said car control means providing an inactivity signal when its associated elevator car is idle,
• control means providing signals for said car control means which cause said plurality of elevator cars to answer requests for elevator service according to a predetermined strategy,
• said control means including a first strategy for providing predetermined special service for a first special floor, and second strategy for providing predetermined special service for a second special floor, with said first and second strategies each including the parking of an idle elevator car at the special floor,
• first and second enable means for selectively activating the first and second strategies, respectively,
• said first strategy having priority over said second strategy when the first and second enable means simultaneously activate the first and second strategies,
• first and second position selector means for selecting first and second floors to which the first and second strategies are to be applied, respectively,
• first and second door mode selector means for selecting the door positions of elevator cars parked at the first and second special floors, respectively,
• and first and second service direction selector means for selecting the service directions of elevator cars parked at the first and second special floors, respectively.

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

• a plurality of elevator cars having doors operable between open and closed positions,
• means mounting said plurality of elevator cars for movement relative to the floors,
• means for registering requests for elevator service for at least certain of the floors,
• car control means for each of said elevator cars, said car control means providing an inactivity signal when its associated elevator car is idle,
• control means providing signals for said car control means which cause said plurality of elevator cars to answer requests for elevator service according to a predetermined strategy,
• said control means including a first strategy for providing predetermined special service for a first special floor, and second strategy for providing predetermined special service for a second special floor, with said first and second strategies each including the parking of an idle elevator car at the special floor,
• first and second enable means for selectively activating the first and second strategies, respectively,
• first and second position selector means for selecting first and second floors to which the first and second strategies are to be applied, respectively,
• said first and second floors selected by the first and second position selector means may be the same floor, with the control means providing the first and second strategies for this single floor,
• first and second door mode selector means for selecting the door positions of elevator cars parked at the first and second special floors, respectively,
• and first and second service direction selector means for selecting the service directions of elevator cars parked at the first and second special floors, respectively.

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

• a plurality of elevator cars having doors operable between open and closed positions,
• means mounting said plurality of elevator cars for movement relative to the floors,
• means for registering requests for elevator service for at least certain of the floors,
• car control means for each of said elevator cars, said car control means providing an inactivity signal when its associated elevator car is idle,
• control means providing signals for said car control means which cause said plurality of elevator cars to answer requests for elevator service according to a predetermined strategy,
• said control means including a first strategy for providing predetermined special service for a first special floor, and second strategy for providing predetermined special service for a second special floor, with said first and second strategies each including the parking of an idle elevator car at the special floor,
• first and second enable means for selectively activating the first and second strategies, respectively,
• first and second position selector means for selecting first and second floors to which the first and second strategies are to be applied, respectively,
• first and second door mode selector means for selecting the door positions of elevator cars parked at the first and second special floors, respectively,
• and first and second service direction selector means for selecting the service directions of elevator cars parked at the first and second special floors, respectively,
• said control means periodically assigning service directions from the plurality of floors to the plurality of elevator cars, with an elevator car parked with its doors open at a floor selected by a position selector means as a special floor, when the associated enable means has activated the associated strategy, being assigned only the service direction from the special floor selected by the associated service direction selector means, when there is at least one additional idle car.