JPH04125268A - Control device for elevator - Google Patents

Abstract

PURPOSE:To avoid receiving a cage call having arrived at just a minute earlier due to erroneously forecasted arrival time by making a group management control section detect the case of the cage call where its arrival at just a minute earlier is forecasted, based on the conditions of respective elevators, and thereby delaying the door opening operation of the elevator answering to the cage call. CONSTITUTION:A group management control section 1 detects the case of a cage call where its arrival at just a minute earlier is forecasted, based on cage information 7. When there arrives a cage call to an elevator running to the regular direction at a floor to be stopped next, and when the difference in arrival time from an allocated elevator is within a definite time, the aforesaid control section issues a start delay command 6B to the single control section 2 of the elevator which has accepted the cage call with the arrival of the cage call forecasted. Furthermore, when it is detected that the difference in arrival time between the elevator which is being decelerated since it accepted the cage call and the allocated elevator is within a definite time, the control section 1 issues a door open delay command 6A to the single control section 2 of the elevator which has accepted the cage call. In this case, when the command 6B is issued, after a definite time has elapsed since a door was closed, a start command 8 is issued to a motor control section 4. And when the command 6A is issued, a door open command is issued, so that the door is thereby opened after the elevator has been completely stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a control device for a group control elevator, and particularly to a technique for preventing first-come-first-served car calls.

(Prior art) In conventional group control elevators, the predicted arrival time is distorted due to reopening by pressing the car door open button, occurrence of car calls after the forecast is output, etc. There are cases where the arrival is earlier than the arrival of the assigned machine.

FIG. 4 is an example of first-come-first-served car calls due to the occurrence of car calls after the forecast is output. In this example, when car A with a car call on the 5th floor is running down on the 6th floor, and car B with a car call on the 4th floor is running down on the 7th floor, a down call on the 3rd floor occurs. be. In this case, the down call for the third floor is assigned to machine A because the arrival time of machine A is shorter. After that, when the car A opens its door using the car door open button when answering a call on the way, the stop time increases due to an increase in passengers getting on and off, and the number of floors at which the car stops due to passengers en route increases, the arrival time of the car increases. When a car call for the third floor occurs in car B, the arrival time of car A increases, resulting in car call B being the first to arrive.

(Problem to be Solved by the Invention) In the conventional technology, in 1 group management control, call assignment is done when a hall call occurs, so the arrival time to the target floor has to be calculated based on the state at that time. There were cases in which the predicted arrival time was incorrect due to reopening by pressing the car door open button, the occurrence of a car call after the forecast was output, etc., and the car was called on a first-come, first-served basis.

The purpose of the present invention is to avoid first-come-first-served calls due to discrepancies in predicted arrival times.

[Structure of the Invention] (Means for Solving the Problem) The group management control unit detects a case in which the condition of each aircraft is expected to be the first one to receive a call, and A command is given to delay the opening of the door of the car answering the call, or delaying the start operation of the car answering the car when it heads to the first floor when the car calls. delaying the door opening operation in response to instructions from the group management control unit;
Alternatively, the starting operation may be delayed.

(Function) The group management control unit detects a case in which a car with a slight difference in the status of each car is predicted to arrive first, and delays the door opening operation of the car that responds to the call, or delays the opening of the door of the car that responds to the call. By giving a command to delay the start operation when heading to the floor where the call is expected to arrive first, the single control unit of the car call answering machine can delay the door opening operation command, or delay the start operation command to prevent a close call. Prevent first-come, first-served calls.

explain.

It is composed of a group management control section 1, a single control section 2, a car 3, a motor control section 4, and a motor 5, and the data exchanged from the single control section 2 to the group management control section 1 is car information 7 for each car. , the data sent from the group management control section 1 to the single control section 2 are a door opening delay command 6A, a start delay command 6B,
The data sent from the single control unit 2 to the handle 3 is the door open command 9.
, the data sent from the single control section 2 to the motor control section 4 is a start command 8.

An embodiment of the present invention will be described with reference to FIG.

Based on the car information 7 transmitted from the single control unit 2 of each car, the group management control unit 1 detects a case in which a first-come-first-served call is predicted to occur. Detection criteria and group management control unit 1
As a process, there is a forward car call at the first stop floor,
In addition, when the difference in arrival time with the first allocated car is within a certain time, the first arrival car call is predicted and a start delay command 6B is issued to the single control unit 2 of the first car called. Furthermore, when it is detected that the first arriving car is decelerating to the target floor and the arrival time difference with the assigned car is within a certain time, the group management control unit 1
A door opening delay command 6A is issued to the single control unit 2 of the first-arriving car. The processing of the single control unit 2 that receives the command from the group management control unit 1 is as follows: When the start delay command 6B is issued,
After a certain period of time has elapsed after the door is closed, a start command 8 is issued to the motor control unit 4 to delay the start. Next time the door opening delay command 6A is issued, issue the door opening command 8 times so that the door opens after the stop is completed. Normally, the door opens while landing on the floor, but this process delays the door opening.

Next, the flowchart of FIG. 2 and the flowchart of FIG. 3 will be explained using the example of FIG. 4.

FIG. 4 is an example of a first-come-first-served car call caused by the generation of a car call after the forecast is output. In this example, car A, which has a car call on the 5th floor, is running down on the 6th floor, and B, which has a car call on the 4th floor.
This is a case where a down call for the 3rd floor occurs while the machine is down on the 7th floor.

In this case, the down call on the third floor is assigned to machine A. After that, when the A-box machine responds to a call on the way, if the door is opened by pressing the door open button inside the car, the stop time increases due to an increase in passengers getting on and off, or the number of floors at which the car stops due to passengers on the way increases, etc.
The arrival time of Aircraft A increases. Assume that a 3rd floor car call occurs in car B during that time.

In the third flowchart, since there is a hall call, the arrival time of the same car is calculated and the car that is predicted to arrive first is detected. From now on, that machine will be referred to as the first-come-first-served machine. When Car B (first-arriving car) starts from the 4th floor, it detects that there is a car call on the 3rd floor and that the arrival time with Car A (assigned car) is within a certain amount of time, and then Outputs a start delay command to the single control unit. Car B, to which the start delay command was issued, avoids the first-come, first-served car call by delaying the start from the 4th floor.

Further, if the start delay cannot be avoided, or if the start delay cannot be implemented, the first-come-first-served call is avoided by delaying the opening of the door as shown in the flowchart of FIG. In the flowchart of FIG. 2, since there is a hall call, the arrival time of the same car is calculated and the first arriving car is detected. When the B-unit (first-arriving unit) decelerates to the third floor and the difference in arrival time between the B-unit unit (first-arriving unit) and the A-unit unit (assigned unit) is within a certain amount of time, the unit control unit of the B unit (first-arriving unit) decelerates to the third floor. Open delay command is output. The B car (first arrival car) to which the door opening delay command has been output outputs a door opening command to open the door after the stop is completed. By delaying the door-opening timing, the arrival of the B-car (first-arriving car) will be delayed and the first-arriving car will be avoided.

In this embodiment, the start of opening the door is delayed.

By delaying the start operation, the number of first-come-first-served cases due to close margins is reduced.

〔Effect of the invention〕

It is possible to reduce the number of first-come-first-served car calls due to discrepancies in expected arrival times after hall calls are allocated.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of an elevator control device of the present invention, FIGS. 2 and 3 are flowcharts showing the operation of an embodiment of the present invention, and FIG. 4 is an example of the operation of a conventional device. FIG. 1...Group management control unit 2...Single control unit 3...
- Car 4... Motor control unit 5... Motor 6A... Door opening delay command 6B... Start delay command 7... Car information 8... Start command 9... Door opening command agent Patent Attorney Noriyuki Chika ■ Figure Figure Figure Figure

Claims (2)

[Claims] (1) In elevator group management control in which multiple elevators are put into service for multiple floors and the optimal elevator is selected and assigned for a common hall call, the arrival of a non-assigned machine due to a car call is and means for delaying the door opening operation of the non-assigned car when the difference in arrival time between the assigned car and the non-assigned car is small. Elevator control device. (2) In elevator group management control, where multiple elevators are put into service for multiple floors and the optimal elevator is selected and assigned for a common hall call, the arrival of a non-assigned machine due to a car call is caused by the arrival of an assigned machine. A means for detecting that the aircraft arrives earlier than the arrival time, and a means for delaying the departure operation of the non-assigned aircraft on the floor heading for the corresponding landing floor when the difference in arrival time between the assigned aircraft and the non-assigned aircraft is small. An elevator control device characterized by: