GROUP SUPERVISORY CONTROL DEVICE FOR ELEVATOR

• US 20130284542A1
• Filed: 02/03/2011
• Published: 10/31/2013
• Est. Priority Date: 02/03/2011
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Eto, Masaharu
• Granted Patent: US 9,315,361 B2
• Time in Patent Office: Days
• US Class Current: 187/247
• CPC Class Codes: B66B 1/2458 For elevator systems with multiple shafts and a single car per shaft
• CPC Class Codes: B66B 1/34 Details , e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
• CPC Class Codes: B66B 13/146 method or algorithm for controlling doors
• CPC Class Codes: B66B 2201/101 Single call input
• CPC Class Codes: B66B 2201/216 Energy consumption
• CPC Class Codes: Y02B 50/00 Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies

Abstract

A group supervisory control device for an elevator includes a hall call assignment portion assigning a specific car to a hall call registered; an operation prediction portion predicting which is the operation to the next hall registered, regenerative operation or power running operation, and the time for which the regenerating operation or the power running operation is performed when the specific car has stopped at a responding hall; and a door open time control portion comparing the time for which the regenerative operation or the power running operation of the specific car is performed with the remaining running time of any other car performing the power running operation or the regenerative operation already predicted, calculating overlap time for the operations simultaneously, and making door open time set for the specific car changed to determine the door open time that can obtain longer overlap time, whereby a door is closed.

Claims

1. A group supervisory control device for an elevator, by which elevator control devices for controlling a plurality of cars are controlled as one group, comprising:

a hall call assignment portion by which a specific car is assigned to a hall call registered by hall call registration portion for registering a hall call at each floor;

an operation prediction portion by which, when the specific car has stopped at a responding hall, it is predicted which is the operation to the next hall registered by the hall call registration portion according to the car traveling direction and the car load, regenerative operation which regenerates power or power running operation which consumes power, and the time for which the regenerating operation or the power running operation is performed is predicted; and

a door open time control portion by which the time for which the regenerative operation or the power running operation of the specific car is performed, which is predicted by the operation prediction portion, is compared with the remaining running time of any other car performing the power running operation or the regenerative operation already predicted by the operation prediction option, overlap time for which the specific car and the any other car perform the regenerative operation and the power running operation simultaneously is calculated, and

door open time set for the specific car, which is used for the calculation, is changed and the overlap time is calculated to determine the door open time which can obtain longer overlap time, whereby a door is closed.

4. The group supervisory control device for an elevator according to claim 1, wherein when the remaining running time of the any other car is not shorter than the predetermined setting time, an arithmetic operation portion provided in the door open time control portion calculates the overlap time.

2. A group supervisory control device for an elevator, by which elevator control devices for controlling a plurality of cars are controlled as one group, comprising:

a hall call assignment portion by which a specific car is assigned to a hall destination call registered by hall destination call registration portion for registering a hall destination call at each floor;

an operation prediction portion by which it is predicted which is the operation in each running section of a hall registered by the hall destination call registration portion according to the car travel direction and the estimated onboard load, regenerative operation which regenerates power or power running operation which consumes power, and the time for which the regenerating operation or the power running operation is performed is predicted; and

a door open time control portion by which the time for which the regenerative operation or the power running operation of the specific car is performed, which is predicted by the operation prediction portion, is compared with the remaining running time in each running section of any other car performing the power running operation or the regenerative operation already predicted by the operation prediction portion, overlap time for which the specific car and the any other car perform the regenerative operation and the power running operation simultaneously is calculated, and

door open time set for the specific car, which is used for the calculation, is changed and the overlap time is calculated to determine the door open time which can obtain longer overlap time, whereby a door is closed.

5. The group supervisory control device for an elevator according to claim 2, wherein when the remaining running time of the any other car is not shorter than the predetermined setting time, an arithmetic operation portion provided in the door open time control portion calculates the overlap time.

3. A group supervisory control device for an elevator, by which elevator control devices for controlling a plurality of cars are controlled as one group, comprising:

a remote hall button installed at a place distant from an elevator hall;

a remote hall call assignment portion by which considering walking time to the elevator hall, a specific car is assigned to a hall call performed by the remote hall button, which hall call has been registered by hall call registration portion for registering a hall call at each floor;

an operation prediction portion by which it is predicted which is the operation to the hall at which the hall call has been performed according to the car traveling direction and the car load, regenerative operation which regenerates power or power running operation which consumes power, and the time for which the regenerating operation or the power running operation is performed is predicted; and

a start timing control portion by which when it is determined that the time for which a passenger who depressed the remote hall button arrives at the elevator hall is longer than the time necessary for the specific car which is stopping at a certain place and is assigned by the hall call assignment portion to respond to the hall call, and also the time obtained by adding fixed time to the time for which the passenger arrives at the elevator hall is longer than the time for which the specific car arrives at the elevator hall,

the time for which the regenerative operation or the power running operation of the specific car predicted by the operation prediction portion is performed is compared with the remaining running time of any other car performing the power running operation or the regenerative operation already predicted by the operation prediction portion, overlap time for which the specific car and the any other car perform the regenerative operation and the power running operation simultaneously is calculated, and

door open time set for the specific car, which is used for the calculation, is changed and the overlap time is calculated to determine the start timing which can obtain longer overlap time, whereby the car is started.

6. The group supervisory control device for an elevator according to claim 3, wherein when the remaining running time of the any other car is not shorter than the predetermined setting time, an arithmetic operation portion provided in the start timing control portion calculates the overlap time.