JPH0789677A - Elevator group management control method - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to appropriately allocate a landing call generated by accurately calculating an estimated arrival time for an empty car moving to a waiting floor, and to set an express zone. An object of the present invention is to provide an elevator group management control method capable of reducing the waiting time by improving the response of an empty car moving to a waiting floor. According to the present invention, a plurality of elevators are activated for a plurality of floors, an optimum elevator is selected for a hall call, and the floor where the hall call is generated is made to respond, and an empty space after the service is finished. In a group management control method for an elevator that causes a car to wait on a predetermined waiting floor, while the empty car is moving to the waiting floor, the predicted arrival time to a hall called floor in front of the traveling direction of the empty car is It is calculated that the empty car responds by going straight to the hall call floor, and the estimated arrival time to the hall call floor that occurs behind the empty car is the nearest floor to which the empty car can land. It is characterized in that the calculation is performed as a response by returning the response.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator group management control method in which a plurality of elevators are activated for a plurality of floors, and an optimal elevator is selected and responded to a hall call.

[0002]

2. Description of the Related Art In recent years, in order to improve the operation efficiency of elevators and the service to elevator users when a plurality of elevators are installed in parallel, an elevator that responds to a landing call on each floor has a microcomputer or the like. The small-sized computer of the above-mentioned group performs the group management control for rationally and promptly assigning the most suitable car to the hall call.

That is, when a hall call is generated, an optimum elevator serving the hall call is selected and assigned, and other elevators are prevented from responding to the hall call.

In such a group management control, when the final response of the elevator is completed and the car becomes empty, a standby command is given to wait on a predetermined floor after a predetermined time has passed, and the elevator is moved to the standby floor. Move toward. Further, as shown in (a) of FIG. 10, if an upper hall call (rear call) of the F1 floor occurs while the empty car is moving to the waiting floor, the elevator group management control device selects the optimum number. In the allocation process, the expected arrival time up to each response floor including the floor call generation floor is calculated for all units. Therefore, also in the case of FIG. 10A, the predicted arrival time to the F1 floor of the empty car is calculated. At the moment, it is operating on a schedule to the waiting floor, so F1
The estimated arrival time t _F1 to the floor is the traveling time t ₁ to the standby floor.
And t _F1 which is the sum of the traveling time t ₃ from the waiting floor to the F1 floor
= T ₁ + t ₃ is calculated. Similarly, in the case of the F2 floor, the predicted arrival time is t _F2 = t ₁ + t ₂ .

That is, in the conventional group management control,
If a hall call occurs on another floor while the empty car is moving to the standby floor, the expected arrival time to that floor is calculated on the assumption that the car will arrive or pass through the standby floor once. ing.

[0006]

In the conventional elevator group management control described above, if an empty car is assigned to the hall call on the F1 floor, the assignment command is given and the standby command is canceled at the same time. The actual response time T _F1 = to respond to the F1 floor after landing on the closest floor (deceleration floor in FIG. 10B) where the vehicle can decelerate from the current speed and land Since t ₅ + t ₆ , the expected arrival time t _F1 > the response time T _F1 . Similarly, the response time T _F2 = t ₄ on the F2 floor, and the predicted arrival time t _F2
> The response time is T _F2 .

This means that the predicted arrival time t _F1 of the empty car moving to the waiting floor becomes larger than the actual response time T _F1 and, as a result, the accurate predicted arrival time suitable for the actual driving. Not only is it not possible to calculate, but originally, although it can respond faster than other elevators,
In some cases, it became difficult to assign to a landing call and the appropriate assigned number was not selected.

Further, as shown in FIG. 10 (c), when traveling in the express zone toward the waiting floor, the predicted arrival time t _F3 to the F3 floor is t ₇ + t ₈ . However, F3
When assigned to a floor call (rear call) on the floor, the nearest floor deceleration is performed at the exit of the express zone (the exit zone of the express zone just above the exit above the express zone). Then, the actual response time T _F3 up to the F3 floor is t ₉ + t ₁₀ . In this way, when driving in the express zone, it is not possible to reverse until it has passed through the conventional express zone, so the floor behind the express zone (F3 floor, etc.) has a long response time, and is allocated even though it is an empty basket. It became difficult and hindered efficient operation control. In particular, in the elevator of a high-rise bank of a skyscraper, since many express zones are provided, the above-mentioned phenomenon may occur frequently.
Further, when the ascent / descent stroke of the express zone is long, an emergency stop floor is set at a predetermined ascending / descending stroke interval during the ascending / descending stroke in consideration of an elevator failure in the express zone. The emergency stop floor is provided with elevator halls, doors, etc. in the same way as the normal service floor in terms of elevator control,
Since there is no hall call button in the hall and no car call button in the car, it is controlled as non-stop except in the emergency operation mode.Therefore, in the case of (d) of Fig. 10, the emergency stop floor is Since it is treated as non-stop except at the time, it will be turned over at the exit above the express zone, so it will be wasted only for the current car's current position and the exit for the express zone, despite the fact that the car is empty. Driving was forced, and operation control was deteriorated.

It is an object of the present invention to appropriately allocate a hall call generated by accurately calculating an estimated arrival time for an empty car moving to a standby floor, and to move an express zone to a standby floor. An object of the present invention is to provide an elevator group management control method capable of reducing waiting time by improving the response of an empty car.

[0010]

According to a first aspect of the present invention, a plurality of elevators are activated for a plurality of floors, an optimum elevator is selected for a hall call, and the floor where the hall call occurs. In the elevator group management control method of causing the empty car to wait on a predetermined waiting floor after the end of service, while the empty car is moving to the waiting floor, a hall call in front of the traveling direction of the empty car The predicted arrival time to the floor is calculated as that the empty car responds by going straight to the hall call floor, and the predicted arrival time to the hall call floor generated behind the empty car is the empty car. The calculation is performed by returning to the nearest floor that can be landed and responding.

The invention according to claim 2 activates a plurality of elevators for a plurality of floors, selects an optimal elevator for a hall call, and makes the floor call in which the hall call occurs respond. In an elevator group management control method for causing an empty car to wait on a predetermined waiting floor after completion of service, when the empty car is traveling in the express zone toward the waiting floor and there is an emergency stop floor in front of the traveling direction The predicted arrival time at the hall call floor that occurred behind the empty car is calculated as a response to the hall call floor by reversing at the emergency stop floor, and When the empty car is assigned, turn around at the emergency stop floor,
This is to respond to the floor called floor.

Furthermore, the invention according to claim 3 activates a plurality of elevators for a plurality of floors, selects an optimal elevator for a hall call, and makes the floor respond to the floor where the hall call occurs. In the elevator group management control method of making an empty car after the service end on a predetermined waiting floor,
While the empty car is driving in the express zone toward the waiting floor,
The stop position of the empty car is calculated, and the predicted arrival time to the floor called floor generated behind the empty car is inverted at the stop position to be calculated as a response to the floor called floor. However, when the empty car is assigned to the hall call floor, the direction is reversed at the stoppable position to respond to the hall call floor.

[0013]

In the invention described in claim 1, since the predicted arrival time of the empty car moving to the waiting floor is calculated as a direct response from the current position without passing through the waiting floor, the predicted arrival time is calculated. Can be accurately calculated as more suitable for actual driving. Furthermore, the waiting time can be reduced by preferentially allocating to the hall calls in the direction opposite to the moving direction of the waiting floor and the hall calls generated behind.

Further, in the invention according to claim 2, when the empty car is moving in the waiting floor and traveling in the express zone,
The predicted arrival time for the hall call that occurred behind the car in the moving state is calculated as a direct response by reversing the direction at the emergency stop floor without going through the standby floor from the current position. Can be calculated more accurately, and the direction can be reversed at the emergency stop floor in the express zone to respond to the hall call floor, so that the waiting time can be shortened.

Further, in the invention according to claim 3,
While the car is moving on the waiting floor and is driving in the express zone,
When a back call occurs, the predicted arrival time can be calculated more accurately by reversing the direction at the car stop position so that the predicted arrival time can be calculated more accurately and the stop position within the express zone can be calculated. Since the direction is reversed at to respond to the hall called floor, the waiting time can be shortened.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an elevator group supervisory control apparatus for implementing an elevator group supervisory control method according to an embodiment of the present invention.

In FIG. 1, reference numeral 1 is a group management control unit,
The group management control unit 1 is connected to the unit control units 2-1 to 2 -N that control the operation of each unit elevator via a high-speed transmission line 6 that is a first transmission unit. The group management control unit 1 and the unit control units 2-1 to 2-N are configured by a small computer such as a single or a plurality of microcomputers, and operate under the management of unique software.

3 is a hall call button provided on each floor,
A hall call input / output control unit 4 inputs and outputs hall call signals. Group management control unit 1, unit control units 2-1 to 2-N
And each hall call input / output control unit 4 is connected via a low-speed transmission line 7 which is a second transmission means.

The high-speed transmission line 6 is composed of the unit control units 2-1 and 2-2.
-N and the group management control unit 1, that is, a transmission means that mainly performs transmission between control computers in the machine room, is a high-speed and highly intelligent network, and controls information necessary for group management control. Management control unit 1, individual unit control units 2-1
High-speed transmission is performed between ~ 2-N.

The low-speed transmission line 7 is a transmission means mainly for transmitting the information sent through the hoistway, such as the hall call button 3 of each hall and the monitoring board 5 of the monitoring room. Optical cables, etc., which are low in speed and have little signal deterioration due to long-distance transmission, and are used for group management control unit 1, single unit control units 2-1, to 2-N, hall call input / output control unit 4, monitoring board. Data is transmitted at low speed to and from the mobile station 5.

When the group management control unit 1 is normal, the signal from the hall call button 3 is transmitted through the low speed transmission line 7 to the group management control unit 1.
The group management control unit 1 determines the optimum number based on the information of the single unit control units 2-1 to 2 -N sent via the high-speed transmission line 6, and An assignment command is given via the high-speed transmission line 6. Then, the unit controller that has received the allocation command causes the controlled machine to respond to the generated hall call.

FIG. 2 is a block diagram of the software system of the group management control unit 1 and the unit control units 2-1 to 2-N shown in FIG. The software is composed of a unit control function task 9, a group management control main function task 10, a group management control sub-function task 11, and a transmission control task 12 by a real-time OS 8 which is an operating system, and each task by a scheduler in the real-time OS 8. 9 to 12 are activated or held.

Of these tasks 9 to 12, the unit control function task 9 is a core function of the unit control units 2-1 to 2 -N and controls the operation of the elevator unit itself. It is a task for operating 2-1 to 2 -N, and the start priority is set high.

The group management control main function task 10 is a central function of the group management control unit 1, and each unit control unit 2-
Collecting information data for each machine from the group management control sub-function task 11 distributed to 1, 2 to 2-N, determining the optimum machine by comparing and computing, and issuing an allocation command to the corresponding machine. At the same time, the monitoring control after the hall call allocation and the signal input from the hall call button 3 are performed.

The group management control sub-function task 11 is a function for processing information for each machine. In this embodiment, the predicted arrival time is calculated, and the group management control main function task 10
Information is processed under the control of.

That is, the microcomputer having the group management control main function task manages the activation and termination of other tasks via the high-speed transmission line 6, and the main function station serving as the master is controlled. It is configured to perform distributed processing in units of machine numbers according to commands, and to convey data to the main functional station when processing is completed.

The transmission control task 12 exchanges data on the high speed transmission line 6. FIG. 3 is a block diagram showing the system configuration of the high speed transmission line 6 of FIG. Although transmission control is performed by using the microprocessor 13, the IS
The data link controller 14 and the media access controller 15, which are made up of hardware, are used as a part for controlling the data link layer of the LAN network model layer proposed by O (International Organization for Standardization), and data transmission can be performed with high intelligence. It is composed. And for high speed transmission control microprocessor
It is configured to reduce the ratio of transmission control software managed by 13.

The data link controller 14 as a controller that realizes the high intelligent transmission control is an i82586, which is an Intel LSI, and the media access controller 15 is also an i825 from an Intel.
01 has been put to practical use, and by using these, 10
Microprocessor with high-speed transmission function of M bits / second
It is relatively easy to do with a reduced support ratio of 13.
Reference numeral 16 is a system bus, 17 is a control line, and 18 is a serial transmission system.

FIG. 4 shows the configuration of the group management control sub-function task 11 shown in FIG. 2. As described above, the group management control sub-function task 11 is information of each unit of the group management control unit 1. Allocation evaluation calculation task 11 which performs allocation evaluation calculation for each unit under the control of the group management control main function task 10 in the hall call generation allocation control.
1 and a predicted arrival time calculation task 112 that is started at a predetermined time interval and calculates the predicted arrival time of each unit to each floor.

Next, the operation of the embodiment based on the invention described in claim 1 will be described. 5 is a flow chart showing the operation of the predicted arrival time calculation task 112 in the group management control sub-function task 11 according to the present invention, and FIG. 6 is an elevator state diagram for explaining the operation of FIG.

The predicted arrival time calculation task 112 in FIG. 5 is activated at predetermined time intervals and calculates the predicted arrival time of all floors of the own vehicle. If the car is stopped in the non-direction,
Since it is possible to respond directly to any floor, the traveling time between the stop floor and the calculation target floor is calculated as the predicted arrival time (step 51). If the car is operating but not moving to the standby floor, the estimated arrival will be based on the sum of the running time between each scheduled stop floor and the stop time at the planned stop floor on the way from the current position of the car to the calculation target floor. Calculate time (step 52). Taking (a) of FIG. 6 as an example, the predicted arrival time t to the target floor is
Is t = (FLYGHT (d ₀ ) -DEPT) + t ₀ + F
LYGHT (d ₁ ) + t ₁ + FLYGHT (d ₂ ), where d _{0 to} d ₂ are mileages, t ₀ is stop time at the car call floor, t ₁ is stop time at the hall call floor, and FLY
GHT (i) is the traveling time of the traveling distance i, and DEPT is the elapsed time after the start.

Next, when the car is moving toward the standby floor, the floor at which the car decelerates from the present time and can be landed is calculated (step 53). This calculates the floor that can be decelerated and landed on the car at the current car speed.If the deceleration is constant, the car speed uniquely determines the distance that can be decelerated and stopped. The nearest service floor ahead is calculated as the floor that can be landed. If the target floor for the predicted arrival time calculation is in the forward direction of the car, and if it is a floor ahead of the floor that can be landed, the response to the standby floor will be canceled if the target floor is assigned. Therefore, since the car can go straight to respond, the time to go straight from the current position and reach the target floor is calculated as the predicted arrival time (step 54). Taking (b) of FIG. 6 as an example, the target floor 1 is the above example, and the predicted arrival time t is t = FLYGHT (d
₃ ) -DEPT, where d ₃ is the distance traveled between the start floor and the target floor 1.

When the floor to be operated is in front of the floor that can be landed (target floor 2), if the floor is assigned to that floor, the floor that can be landed will respond by reversing. , The sum of the traveling time to the floor that can be landed and the traveling time from the floor that can be landed to the target floor is calculated as the predicted arrival time (step 55). Taking (b) of FIG. 6 as an example, the target floor 2 is the above example, and the predicted arrival time t is t = t ₂ + FLYGH
T (d ₄ ), where t ₂ is the traveling time from the current position to the floor that can be landed, and d ₄ is the traveling distance between the floor that can be landed and the target floor.

That is, when the car is moving to the standby floor and the target floor for which the expected arrival time is calculated is ahead of the floor on which the floor can be landed, it goes straight from the current position of the car to the target floor and responds. Calculates the time as the estimated arrival time of the car to the target floor, and if the target floor is in front of the floor that can be landed (call behind), from the current position of the car to the floor that can be landed The expected arrival time of the car moving to the waiting floor is calculated by calculating the sum of the traveling time of the car and the traveling time from the floor that can be landed to the target floor as the predicted arrival time of the car to the target floor. It is possible to calculate accurately with a value close to.

Next, the operation of the embodiment according to the second aspect of the invention will be described. 7 is a flow chart showing the operation control operation of the single control function task 9 according to the present invention when the car is traveling, and FIG. 8 is an elevator state diagram for explaining the operation of FIG. Single control function task 9
As described above, it controls the operation of each elevator, and selects the direction by hall call and car call, and accelerates, decelerates, and runs the car at the rated speed based on the absolute position signal of the car generated by the pulse generator. When landing, it controls the opening and closing of the door.

When the car is running, the processing shown in FIG. 7 is started at a predetermined time interval, and first, the next stop floor to be responded next in the traveling direction of the car is searched (step 71).
When the next stop floor exists, the traveling direction is prioritized for the response, so that the next stop floor is updated, and the deceleration control process for stopping at the confirmed next stop floor is executed (step 7).
2). In this deceleration control processing, the distance that can be decelerated from the current car speed to stop (deceleration stop possible distance) is calculated, the distance from the current position to the confirmed next stop floor is calculated, and the deceleration stop possible distance is calculated. This is a control process for performing a function of landing the elevator at the next stop floor by outputting a deceleration command to the speed control device of the hoisting machine at the time of reaching.

Next, when there is no stop floor, the floor scheduled for response in the direction opposite to the car traveling direction is searched (step 7).
3) Calculate the stoptable position (step 74), and if there is a floor where the response is possible ahead of this stopable position, check whether the stopable position is in the express zone. If the stop possible position is not within the express zone even if there is a response floor, the nearest floor exceeding the stop possible position is set as the next stop floor, and the same deceleration control process as described above is executed (step 75). Here, the stoppable position indicates a position advanced by a deceleration stoppable distance from the current car position.

When the stop-possible position is within the express zone, the emergency stop floor prior to the stop-possible position is searched, and when the emergency stop floor is present, usually during an elevator failure such as rescue operation. Only the stop is permitted, and the emergency stop floor that has been treated as non-stop is released from the non-stop treatment, and the nearest emergency stop floor is set as the next stop floor (step 7).
6). If there is no emergency stop floor, the deceleration control process similar to that described above is executed with the general floor at the exit of the express zone as the next stop floor (step 77).

The calculation of the predicted arrival time in the group management control of the above embodiment is performed based on the flowchart of FIG. In the flowchart of FIG. 5, step 75 and step 7 are performed at the time of calculating the floor that can be landed in step 53.
6. If the addition of executing the floor calculation including the floor determined as the next stop floor in step 77 is performed in the same way, the detailed description is omitted here.

Taking the example of FIG. 8 (a) as an example, the operation example in the above-described processing will be described. In this example, when the car is traveling in the express zone toward the standby floor above the express zone, the target floor below the express zone is shown. Is assigned, and at the same time, the command to move to the standby floor is released and there is an emergency stop floor ahead of the stoppable position. Since the emergency stop floor of the car is ahead of the deceleration-stoptable distance d _1, the operation control of decelerating at the emergency stop floor, stopping and then reversing and responding to the target floor is executed by the single control function task 9. It In the group management control sub-function tax 11, the predicted arrival time t to the target floor is
t = (FLYGHT (d ₀ ) -DEPT) + FLYGH
It is calculated by T (d ₂ ), where d ₀ is the traveling distance between the start floor and the emergency stop floor, and d ₂ is the traveling distance between the emergency stop floor and the target floor.

Next, the operation of the embodiment based on the third aspect of the invention will be described. FIG. 9 is a flow chart showing the operation control operation of the single control function task 9 according to the present invention when the car is traveling. Description of the same parts as those in FIG. 7 is omitted.

When there is a response floor in the direction opposite to the car traveling direction and the stoppable position is within the express zone,
The stoptable position at the present time different from the general floor is set as the stop position (step 91), and the deceleration control process for the arbitrary position outside the floor is executed (step 92). This process is a process to decelerate and stop at a position other than the general floor including the emergency stop floor, and it is different from the normal floor, so a position detection device that determines the exact position of the floor existing in the floor Since there is no data such as the distance between floors and the like, it is executed separately from the landing process on a general floor. The elevator is decelerated with respect to the stop position determined during deceleration and stopped at an arbitrary position. This function
This has already been realized when landing in the same position as the failed elevator between floors, such as during rescue operation when the elevator is out of order.Vibration of the car during landing, deceleration, etc. Although the performance is lower than that of landing, in the case of the present invention, since the car is landed while moving to the standby floor, there is no passenger in the car, so the performance at the time of landing is not a problem. I won't.

Regarding the calculation of the predicted arrival time in the group management control in the above-mentioned embodiment, in the flowchart of FIG.
Since the same processing is performed by adding the stop position by 91, detailed description is omitted here. An example of the operation in the above processing will be described with reference to FIG. 8B as an example. In this example, the conditions are the same as those in (a) of FIG. 8, and the position of the deceleration-stoppable distance is reversed from the speed at the time when the car floor call for the target floor is assigned and the command to the standby floor is canceled. The operation control for decelerating as a position, stopping, and responding to the target floor is executed in the unit control function task 11. The predicted arrival time t to the target floor is t = t ₀ + FLYGHT (d ₃ ), where t ₀ is the deceleration time and d ₃ is the distance from the inversion position to the target floor.

As described above, according to the above-described embodiment, the estimated arrival time of the empty car moving to the waiting floor is accurately calculated in accordance with the actual operation. It is easy to allocate a hall call in the opposite direction to the car and a hall call in the back of the car to the car, so that it is possible to improve the overall operation efficiency and reduce the waiting time. Moreover, since the function of reversing and responding at the shortest distance is added while moving in the express zone in distributed standby, it is possible to further reduce the waiting time.

[0045]

According to the invention described in claim 1, since the predicted arrival time of the empty car moving to the waiting floor is calculated as a direct response from the current position without passing through the waiting floor, The predicted arrival time can be accurately calculated as more suitable for actual driving. Furthermore, the waiting time can be reduced by preferentially allocating to the hall calls in the direction opposite to the moving direction of the waiting floor and the hall calls generated behind.

According to the second aspect of the present invention, when the empty car is moving on the standby floor and is traveling in the express zone, the estimated arrival time for the hall call generated behind the moving car is currently set. It is possible to calculate the predicted arrival time more accurately because it is calculated as if it responds directly by turning the direction at the emergency stop floor without going through the standby floor from the position.
Since the direction is reversed at the emergency stop floor in the express zone to respond to the hall calling floor, the waiting time can be shortened.

According to the third aspect of the present invention, when the car is traveling on the standby floor and is traveling in the express zone, when a back call occurs, the estimated arrival time is reversed at the position where the car can be stopped. The expected arrival time can be calculated more accurately by calculating as a direct response, and the waiting time can be shortened by reversing the direction at the stopable position in the express zone and responding to the hall calling floor. You can

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an elevator group management control device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a software system of a group management control unit and a unit control unit of the group management control device of FIG.

FIG. 3 is a block diagram showing a system configuration of a high-speed transmission line used in the group supervisory control device of FIG.

4 is a block diagram of a software system of the group management control sub-function task shown in FIG.

FIG. 5 is a flow chart showing a method of calculating an estimated arrival time in an embodiment based on the invention described in claim 1.

6 is a state diagram of an elevator for explaining a method of calculating a predicted arrival time in FIG.

FIG. 7 is a flow chart showing operation control of an elevator in an embodiment based on the invention described in claim 2.

FIG. 8 is a state diagram of the elevator for explaining operation control of the elevator shown in FIGS. 7 and 9;

FIG. 9 is a flow chart showing operation control of an elevator in an embodiment based on the invention described in claim 3.

FIG. 10 is a diagram showing an operation of a conventional elevator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Group management control part 2-1, 2-2,-, 2-N ... Single unit control part 3 ... Hall call button 4 ... Hall call input / output control part

Claims (3)

[Claims] 1. A plurality of elevators are commissioned to a plurality of floors, an optimum elevator is selected for a hall call, and the floor call that has generated the hall call is responded to. In the elevator group management control method for waiting on a predetermined waiting floor, while the empty car is moving to the waiting floor, the predicted arrival time to the hall calling floor in front of the traveling direction of the empty car is estimated to be the empty car. Is calculated as a response directly to the hall call floor, and the estimated arrival time to the hall call floor that occurs behind the empty car is returned at the nearest floor where the empty car can land. A group management control method for elevators, characterized in that calculation is performed as a response. 2. A plurality of elevators are commissioned for a plurality of floors, an optimum elevator is selected for a hall call, and the floor call for which the hall call is generated is made to respond to an empty car after the service is finished. In a group management control method for elevators to be put on standby at a predetermined standby floor, while the empty car is traveling in the express zone toward the standby floor, if there is an emergency stop floor ahead in the traveling direction, behind the empty car The expected arrival time to the hall call floor generated by the above is calculated by reversing at the emergency stop floor as a response to the hall call floor, and the empty car is assigned to the hall call floor. In this case, the elevator group management control method is characterized in that the direction is reversed at the emergency stop floor, and the elevator floor management floor is caused to respond. 3. A plurality of elevators are activated for a plurality of floors, an optimum elevator is selected for a hall call, the floor call where the hall call is generated is made to respond, and an empty car after the service is finished. In the elevator group management control method for waiting on a predetermined standby floor, while the empty car is traveling in the express zone toward the standby floor, the stopable position of the empty car is calculated, and behind the empty car. The predicted arrival time to the hall call floor that has occurred is calculated as a response to the hall call floor by reversing it at the stoppable position, and when the empty car is assigned to the hall call floor, A group management control method for an elevator, wherein the direction is reversed at the stoppable position and a response is made to the hall call floor.