ELEVATOR SYSTEM

• US 20110174580A1
• Filed: 07/12/2007
• Published: 07/21/2011
• Est. Priority Date: 07/12/2007
• Status: Active Grant

• Current Assignee: Murolet IP LLC
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Tokura, Sakurako
• Granted Patent: US 8,196,711 B2
• Time in Patent Office: Days
• US Class Current: 187/382
• CPC Class Codes: B66B 1/2458 For elevator systems with multiple shafts and a single car per shaft
• CPC Class Codes: B66B 2201/103 Destination call input before entering the elevator car
• CPC Class Codes: B66B 2201/211 Waiting time, i.e. response time
• CPC Class Codes: B66B 2201/222 Taking into account the number of passengers present in the elevator car to be allocated

Abstract

An elevator system is obtained which is capable of assigning a suitable car by taking into consideration a change of a maximum speed or an acceleration according to the result of prediction of a change of a car load or a moving distance with respect to a hall call. In the elevator system having a group management control device (20), provision is made for a destination floor registration unit (11) that registers a destination floor according to a call into a call registration device (10) at the time of call registration, and an assignment control unit (21) that assigns a suitable car to a destination call registration request from the call registration device (10). The assignment control unit (21) includes a prediction time calculation unit (22), and calculates a change of the moving distance of each car after the call assignment based on the destination floor, and at the same time calculates each floor arrival prediction time of each car using a speed or an acceleration thereof according to a calculated value of the change of the moving distance.

Claims

1. An elevator system which includes a group management control device for a plurality of elevator cars, and in which a maximum speed or an acceleration of each of said plurality of elevator cars is changed according to a car load or a moving distance of each of said plurality of elevator cars, said elevator system characterized by comprising:

a destination floor registration unit that registers a destination floor according to a call into a call registration device at the time of call registration; and

an assignment control unit that assigns a suitable elevator car among said plurality of elevator cars to a destination call registration request from said call registration device;

wherein said assignment control unit includes a prediction time calculation unit, and

said prediction time calculation unit calculates a change of the moving distance of each elevator car after the call assignment based on said destination floor, and at the same time calculates each floor arrival prediction time of said each elevator car using a speed or an acceleration thereof according to a calculated value of said change of the moving distance.

2. An elevator system which includes a group management control device for a plurality of elevator cars, and in which a maximum speed or an acceleration of each of said plurality of elevator cars is changed according to a car load or a moving distance of each of said plurality of elevator cars, said elevator system characterized by comprising:

a passenger counting unit that measures the number of passengers according to a call, and registers a measured value of said number of passengers into a call registration device at the time of call registration; and

an assignment control unit that assigns a suitable elevator car among said plurality of elevator cars to a call registration request including said number of passengers from said call registration device;

wherein said assignment control unit includes a prediction time calculation unit, and

said prediction time calculation unit calculates a change of the car load of each elevator car after the call assignment based on said number of passengers, and at the same time calculates each floor arrival prediction time of said each elevator car using a speed or an acceleration thereof according to a calculated value of said change of the car load.

3. An elevator system which includes a group management control device for a plurality of elevator cars, and in which a maximum speed or an acceleration of each of said plurality of elevator cars is changed according to a car load or a moving distance of each of said plurality of elevator cars, said elevator system characterized by comprising:

a destination floor registration unit that registers a destination floor according to a call into a call registration device at the time of call registration;

a passenger counting unit that measures the number of passengers according to said call, and registers a measured value of said number of passengers into said call registration device at the time of said call registration; and

an assignment control unit that assigns a suitable elevator car among said plurality of elevator cars to a destination call registration request including said number of passengers from said call registration device;

wherein said assignment control unit includes a prediction time calculation unit, and

said prediction time calculation unit calculates a change of a moving distance, and a change of a car load of each elevator car after call assignment based on said destination floor and said number of passengers, and at the same time calculates each floor arrival prediction time of said each elevator car using a speed or an acceleration thereof according to a calculated value of each of said change of said moving distance and said change of said car load.