Elevator group control system

• US 8,286,756 B2
• Filed: 12/20/2007
• Issued: 10/16/2012
• Est. Priority Date: 12/20/2007
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Koba, Yoshimasa, Suzuki, Naohiko
• Primary Examiner(s): SALATA, ANTHONY J
• Application Number:
  US12/744,221
• Publication Number:
  US 20100282544A1
• Time in Patent Office: 1,762 Days
• Field of Search: 187/247, 187/248, 187380-388, 187391-393
• 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 2201/213 where the number of stops is limited
• CPC Class Codes: B66B 2201/403 by real-time traffic data

Abstract

An elevator group control system is obtained which is improved in the operating efficiency of entire cars by determining an assigned car with the use of an evaluation value calculated from an increment of the number of floors to be stopped by each car when a hall destination call newly generated by a hall control panel is temporarily assigned to each car. The system includes a hall input unit which is installed in a hall and by which the registration of a destination floor call is able to be made, and an assignment evaluation value calculation unit which includes a plurality of evaluation value calculation units for calculating the respective evaluation values of a plurality of cars in an individual manner, determines a final evaluation value from the respective evaluation values, and selects an optimal assigned car. The assignment evaluation value calculation unit includes a stop number increment evaluation value calculation unit, and the stop number increment evaluation value calculation unit sets an increment variable from an increment of the number of floors to be stopped at the time when a new hall call newly generated and a new hall destination call representing a destination floor of the new hall call are temporarily assigned to each of the plurality of cars, and calculates a stop number increment evaluation value based on the increment variable thus set.

Claims

1. An elevator group control system which carries out operation management of a plurality of cars, said elevator group control system comprising:

a hall input unit which is installed in one or more halls and by which the registration of a destination floor call is able to be made; and

an assignment evaluation value calculation unit which includes a plurality of evaluation value calculation units for calculating the respective evaluation values of said plurality of cars in an individual manner, determines a final evaluation value from said respective evaluation values, and selects an optimal assigned car;

wherein said assignment evaluation value calculation unit includes a stop number increment evaluation value calculation unit which calculates a stop number increment evaluation value; and

wherein said stop number increment evaluation value calculation unit sets an increment variable from an increment of the number of floors to be stopped at the time when a new hall call newly generated and a new hall destination call representing a destination floor of said new hall call are temporarily assigned to each of said plurality of cars, and calculates said stop number increment evaluation value based on said increment variable thus set.

2. The elevator group control system as set forth in claim 1, wherein said stop number increment evaluation value calculation unit includes:

a stop number increment detection part that detects said increment of the number of floors to be stopped,

a stop number increment variable setting part that sets said increment variable based on a predetermined function with said increment thus detected as an argument, and

a stop number increment evaluation value calculation part that calculates said stop number increment evaluation value based on said increment variable thus set.

3. The elevator group control system as set forth in claim 1, wherein said stop number increment evaluation value calculation unit calculates the stop number increment evaluation value of each of said individual cars by using, as said increment variable, an increment value which is obtained by subtracting a second total number of scheduled stops before the temporal assignment of the new hall destination call from a first total number of scheduled stops after the temporal assignment of the new hall destination call.

4. The elevator group control system as set forth in claim 1, wherein said stop number increment evaluation value calculation unit calculates the stop number increment evaluation value of each of the cars by using, as said increment variable, a power value which is obtained by raising to a predetermined power an increment value which is calculated by subtracting a second total number of scheduled stops before the temporal assignment of the new hall destination call from a first total number of scheduled stops after the temporal assignment of the new hall destination call.

5. The elevator group control system as set forth in claim 1, wherein said stop number increment evaluation value calculation unit calculates the stop number increment evaluation value of each of said cars by using, as said increment variable, an increment value which is obtained by subtracting a second power value which is calculated by raising to a predetermined power a second total number of scheduled stops before the temporal assignment of the new hall destination call, from a first power value which is calculated by raising to said predetermined power a first total number of scheduled stops after the temporal assignment of the new hall destination call.

6. The elevator group control system as set forth in claim 1, wherein said stop number increment evaluation value calculation unit calculates the stop number increment evaluation value of each of the cars by using, as said increment variable, a value which is obtained by adding a multiplication value to a power value, where said power value is calculated by raising to a predetermined power an increment value which is obtained by subtracting a second total number of scheduled stops before the temporal assignment of the new hall destination call from a first total number of scheduled stops after the temporal assignment of the new hall destination call, and said multiplication value is calculated by multiplying said second total number of scheduled stops divided by a total number of service floors, said increment value and a predetermined coefficient with one another.

7. The elevator group control system as set forth in claim 1, further comprising:

a traffic pattern detection unit;

wherein when calculating said stop number increment evaluation value based on said increment variable, said stop number increment evaluation value calculation unit performs the multiplication of a weighting coefficient which is set based on the result of detection of said traffic pattern detection unit.