JPH07247066A - Group supervisory operation control device for elevator - Google Patents

Abstract

PURPOSE:To equalize the travel interval of each elevator by setting the starting interval of elevators starting from a reference floor on the basis of the predicted arrival time computed by a predicted arrival time computing means and the judged result of no stand-by elevator judging means so as to reduce such a state as to have no stand-by elevator on the reference floor. CONSTITUTION:In a predicted arrival time arithmetic processing part S31 for a reference floor return specified elevator, the predicted arrival time to return to a reference floor is computed with the elevator, staying on the other floor and specified to return to the reference floor, as an object. A minimum predicted arrival time (tmin) selecting part S32 then selects the minimum reference floor return predicted time from the computed result of the predicted arrival time arithmetic processing part S31. In an average interval computing part S33, the minimum predicted time (tmin) is divided by the number of elevators standing by on the reference floor to compute the starting interval time t0 for equalization.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator group control device, and in particular, there is a large demand in the upward (UP) direction from the standard floor. The present invention relates to an elevator group management control device in which a time until departure is set so as to suppress a state without a standby unit, and an elevator departure interval is equalized.

[0002]

2. Description of the Related Art Conventionally, when driving at work, the demand in the upward direction from the standard floor increases, so at the time of work, pull back each unit under group control to the standard floor and wait at the standard floor. Let Of the waiting units, the one with the starting number set and the command for the starting number issued will restrain departure from the standard floor until a certain time has elapsed. After a certain period of time, the advance command was reset, and the car had left the standard floor. At this time, the time interval that regulates departure for a certain period of time is called the departure interval time, and because the departure interval time was constant, even if there is only one car on the standard floor, the cars will have the same departure interval. It was started and the transport capacity was improved. Also,
As a method of changing the departure interval depending on the number of elevators waiting on the standard floor, set the departure interval time according to the number of standby vehicles on the standard floor Has been improved.

[0003]

However, in the conventional example of this type, when the elevator car on the reference floor departs, the state of the car that is pulled back to return to the reference floor is not taken into consideration. If there is a large demand, there may be a situation where there is no standby unit on the standard floor for a long time, and people may overflow into the hall (hall).

Further, there is a possibility that the elevator cars will be biased to a part of the building because the cars will start one after another. On the other hand, even when the departure interval is changed depending on the number of vehicles, the departure interval is fixed depending on the number of vehicles, so even if another unit can immediately return to the reference floor, the elevator will be unnecessarily retained at the reference floor.

Further, when there is only one unit remaining on the standard floor, it is taken into consideration when other units will return to the standard floor if they leave at the preset departure time. If you have to wait long because there is no car, it may be useless to change the departure interval time of the car and change the departure interval while waiting for the car.

As described above, in the above-mentioned conventional example, the departure interval time is determined only by the number of vehicles condition so as to equalize the car departure intervals in each situation of the elevator or to prevent the occurrence of a long waiting state. Is difficult. In addition, since the departure interval time is a fixed value, the departure interval time determined first is not always appropriate for the building.

The object of the present invention is to eliminate the above-mentioned problems, to equalize the running intervals of the elevators, and to prevent the user's discomfort even when the car door closing button is extended. An object of the present invention is to provide an elevator group management control device.

[0008]

In order to achieve the above-mentioned object, the invention according to claim 1 proposes an elevator system in which a plurality of elevator units are put into service on a plurality of service floors and the operation of each elevator is controlled. In the group management control device, a predicted arrival time calculating means for calculating a predicted arrival time of a car returning from the standard floor to the standard floor in a time zone where demand is high in a predetermined direction, such as work hours, and the standard floor. The standby machine absence determining means for determining the state without standby machine, the estimated arrival time calculated by the predicted arrival time calculating means, and the determination result of the standby machine absence determining means, the state without standby machine on the reference floor So as to reduce the number of departures, the departure interval setting means for setting the departure interval of the departure machine of the standard floor, and the elevator group management control device.

In order to achieve the above object, the invention according to claim 2 is to provide an elevator group management control device for operating a plurality of elevator units on a plurality of service floors and controlling the operation of each elevator. Predicted arrival time calculation means for calculating the predicted arrival time of a machine returning from the standard floor to the standard floor in a time zone where demand is high in a predetermined direction, such as work hours, and a state without a standby machine on the standard floor Standby machine absence determination means for determining, the predicted arrival time calculated by the predicted arrival time calculation means and the determination result of the standby machine absence determination means, so that the state of no standby machine on the reference floor is reduced, Departure interval setting means for setting the departure interval of the standard floor departure machine, and door closing in the car when the departure interval time of the standard floor departure machine exceeds a predetermined time Elevator group management control device including restraint means for invalidating departure and restraining departure and notifying means for delaying departure when the door close button is pressed when the door close button is invalid Is.

[0010]

According to the invention corresponding to claim 1, the departure intervals of the departure units of the standard floor are controlled so as to reduce the occurrence of the state without standby units on the standard floor, thereby equalizing the traveling intervals of the elevators. It is possible to balance the departure intervals.

According to the invention according to claim 2, when the departure interval time of the standard floor departure machine exceeds a predetermined time, the door close button is pressed while the door close button in the car is invalidated. In this case, by notifying that the departure is delayed, it is possible to prevent the user's discomfort from increasing.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an elevator group supervisory control system according to the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram showing an embodiment of an elevator group management control device. In the elevator car 4 controlled by the group control unit 1 including a group management control microcomputer and a plurality of elevator control units 2 connected by the car information transmission line 8, a car call device 6 and a notification means, for example, A voice guidance device 7 is installed and the information is transmitted to the elevator control unit 2 by the tail code 5.

The elevator user registers the call by using the hall call devices 3a and 3b on each floor, and moves the elevator car 4 which seems to be the best in the group control unit 1 to the floor where the hall call device 3 is generated from the information. .

The group control unit 1 activates a plurality of elevator units on a plurality of service floors and controls the operation of each elevator. Predicted arrival time calculation means for calculating the predicted arrival time of the number of vehicles returning to the reference floor in a large number of time zones, standby unit absence determination means for determining the state of the reference floor without standby units, and the estimated arrival time calculation According to the estimated arrival time calculated by the means and the determination result of the standby unit absence determining unit, the departure interval setting unit that sets the departure interval of the standard floor departure unit so that the state without standby units on the reference floor decreases. , If the departure time of the departure unit of the standard floor exceeds a predetermined time, restraint means for restraining the departure by invalidating the door closing button in the car, and the door closing when the door closing button is invalid When is pressed, it provided with an informing means for informing that delays the starting will be described with reference to FIGS. 2-7 These less.

FIG. 2 is a flow chart for explaining the operation of the departure time interval control means according to the present invention. This process outputs a start command / start reset command to the starting machine, calculates the departure interval time according to the situation in the building, and activates / disables the door close button periodically. Processing.

Step (hereinafter referred to as "S") S1 is a starting machine judging section, which judges whether or not the starting machine exists on the standard floor, and when the starting machine does not exist and the starting machine has not been determined, S2. Proceed to. S2 is the starting machine selection process,
Select the number that can be the starting number. The starting machine target determination unit in S3 determines whether the machine selected in S2 satisfies the conditions of the starting machine, and if there is a target machine that can be the starting machine, the departure interval time calculation process in S4 starts. Calculate the interval time. The details of this calculation method are performed as shown in the flowchart of FIG. 7, and this description will be described later. S1, S2 and S3 correspond to the standby unit absence determination means of the present invention.

When the departure interval time is calculated in S4, the advance instruction command is given to the target vehicle by the advance instruction command processing in S5, and the process proceeds to the next departure interval determining section in S6. In S6, it is determined whether or not the departure interval time calculated in the departure interval time calculation process in S4 is equal to or greater than a predetermined value. If the departure interval time is equal to or greater than the predetermined value, the process proceeds to the door close button invalidation instruction process in S7. Here, it is prevented that a user who has already boarded the vehicle pushes the door close button to prompt the departure of the starting car.

On the other hand, if the departure interval determination unit in S6 determines that the departure interval time is less than the predetermined value, the door closing button valid command process in S8 causes the user to close the door when the user presses the door closing button and start the train. It is possible to depart the Unit. S6 and S7 correspond to means for restraining the departure of the present invention.

In S1, if there is a starting car, the process proceeds to the departure interval time elapse determination unit in S9, where it is determined whether the departure interval time has elapsed. If the departure interval time has elapsed, The starting machine is reset by the starting reset processing of S10, and the door closing button is validated by the door closing button invalidation canceling processing of S11. S9, S10, S1
1 corresponds to the departure interval setting means of the present invention. In this way, after the departure interval time elapses or when the user presses the door close button, the door is closed and the car is started.

FIGS. 3 to 5 are diagrams for explaining a method of calculating the departure interval time when the departure interval according to FIG. 2 is changed. FIG. 3 is an explanatory diagram for calculating the departure interval time when there are a plurality of elevator cars on the reference floor. Specifically, on the standard floor, Unit B 4B, Unit C 4
C exists, and Unit A 4A exists at the position 4A2 after t2 seconds. Reference numeral 4b1 indicates a standard floor hall call under the group management control.

FIG. 4 is an explanatory diagram for calculating the departure interval time when there is only one elevator car on the standard floor. Specifically, there is Unit C 4C on the standard floor, and
Unit 4A is located 4A3 after t3 seconds, and Unit 4C is located 4C2 after t2 seconds. Reference numeral 4b2 indicates a standard floor hall call under group management control.

In FIG. 5, one elevator machine is installed on the standard floor.
It is a figure for demonstrating the delay time in case a stand exists and it becomes long waiting for another elevator machine to return. Specifically, there is Unit B 4B on the standard floor, and Unit A 4A is t3.
It exists at the position of 4A3 after 2 seconds, and Unit C 4C is 4C after t3 seconds.
It exists in position 3. Reference numeral 4b3 indicates a standard floor hall call under group management control.

FIG. 6 is a flow chart of the operation of the voice guide device (corresponding to the notifying means of the present invention) 7 described above, that is, the in-car announcement process during the departure interval time. The door close button is activated while the door close button is invalid (S7 in FIG. 2), the door close button invalidity determination unit in S21 determines whether the door close button is invalid, and if the door close button is not invalid, the process proceeds to step S22. The door close button determination unit in S22 determines that the door close button has been pressed. If it is determined in S22 that the door close button is pressed, the process proceeds to the in-car voice guidance output process in S23, where the departure is delayed for the user in the car, so the door close button is invalidated. Announce that

FIG. 7 is a flow chart of the departure interval time calculation processing means of the present invention (corresponding to the predicted arrival time calculation means of the present invention). The departure interval time calculation of S4 of the flow chart of the departure interval equalization processing of FIG. It is started by the processing unit and the departure interval time is calculated according to the state of the car. Specifically, the predicted arrival time calculation processing unit of the standard floor scheduled return vehicle in S31 sets the predicted arrival time for returning to the standard floor for the vehicles scheduled to return to the standard floor on another floor at this time. calculate. Next, the minimum predicted arrival time tmin selection processing unit of S32 selects the minimum predicted time of reference floor return from the calculation results of S31. After that, in the average interval calculation process of S33, the minimum prediction time tmin calculated in S32 is divided by the number of units waiting on the standard floor, and the departure interval times are equalized. The correction time "average departure interval time t0" is calculated.

In the standard value judging section of S34, the obtained average departure interval time t0 is compared with a predetermined value of the departure interval time, and t
It is determined whether 0 is larger than a predetermined value of the departure interval time. The determination result of S34 is the departure interval determination unit S6 of FIG.
Used to determine whether to enable or disable the door close button of. Furthermore, in S34, when it is necessary to control the determination result departure interval time, the maximum value determination unit in S35
The user boarding the elevator compares the departure time limit of the preset unit with the allowable maximum time (time without feeling uncomfortable), and if it is within the allowable time, departs until the full departure interval time. Extend it.

However, if the departure intervals cannot be equalized until the allowable time is exceeded, the maximum value set by S36 is set as the departure interval time by the maximum value setting process in S36.

Next, the operation of the embodiment configured as described above will be described with reference to FIGS. At first,
The process of equalizing the departure intervals when there are multiple elevators on the standard floor will be described. Figure 3 while driving at work
As shown in FIG. 1, in the group management control unit 1 of FIG. 1, the unit A 4A exists on a floor other than the standard floor under the group management, and the units B 4B and 4C are both waiting on the standard floor. The departure interval equalization process of FIG. 2 is started. If there is no starting machine in the starting machine determination section of S1, the information of the elevator control section 2 is received by the group control section 1 through the car information transmission line 8, and the starting machine selection section of S2 determines that the No. B machine 4B of FIG. It is judged to be the starting machine. In the starting unit target determination unit of S3, B of FIG.
Since the number 4B is present as the starting target number on the reference floor, the process goes to the departure interval time calculation process of S4.

In the return prediction time calculation processing unit of S31 of FIG. 7, the prediction time required for the No. 4A of FIG. 3 to return to the reference floor is t1 + t3, and the minimum prediction time selection processing unit of S32 of FIG. Then, since the number of the vehicles other than the standard floor is only the number A in FIG. 3A 4A, the minimum predicted arrival time tmin = t1 + t
It becomes 3.

Further, in S33, the average departure interval time t0 = tmin / (Unit B 4B in FIG. 3 + Unit C 4C in FIG. 3)
= 2), t0 = (t1 + t3) / 2 is calculated. If the standard value is previously set to 5 seconds and the maximum value is set to 15 seconds in the standard value determination unit in S34 of FIG. 7, t0 is 5
If it is less than a second, that is, if the predicted time to return to the standard floor is 10 seconds or less, the departure interval time is not changed and the previous departure machine is departed from the standard floor at the conventional departure interval time. If it is within the range of 14 seconds, only the value is S7 in FIG.
The door close button is invalidated by the door close button invalid command processing of (1) to extend the departure of the starting car. However, if t0 is 15 seconds or more, the average departure interval time t0 is set to 15 seconds, and the maximum value of 15 seconds considered to be acceptable to the user is set as the departure time interval.

Thereafter, the advance command is output to the car No. 4B of FIG. 3, and if the departure interval determination unit of S6 determines that t0 is 5 seconds or more, the door close button invalid command of S7 of FIG. 2 is issued. The elevator control unit 2 of the car B is instructed to prevent the user who has already boarded the car B from pushing the door close button in order to promote the door close and destroying the calculated departure interval time.

The voice guidance device 7 incorporated in the elevator control unit 2 in FIG. 1, that is, the in-car announcement process during the departure delay in FIG. 6 is started, and it is determined in S21 in FIG. 6 that the door close button is invalid. When the door close button 6 in the car in FIG. 1 is pressed during this time, the information is transmitted to the elevator control unit 2 via the tail cord 5 in FIG. 1, and S22 in FIG.
6 detects that the door close button has been pressed, and S in FIG.
In the in-car voice guidance output process of 23, the output command and the output content are transmitted from the elevator control unit 2 of FIG. 1 to the voice guidance device 7 via the tail code 5.

[0032] Here, by saying to the user in the car, "We are delaying the departure of the elevator now.", The departure time of the departure time can be increased without increasing the discomfort of the user. To allow control to be enforced
If 0 is 5 seconds or less, there is no problem even if the departure interval time is changed to the user by the door closing button valid process of S8 of FIG. 2, so the user determines the departure interval time of the first departure machine. do that for me. This departure delay command is transmitted from the group control panel 1 of FIG. 1 to the elevator control unit 2 of the car B of FIG. 1 via the car information transmission path 8 to change the departure interval of the elevator car 4. The process of FIG. 2 is again entered, and since the starting machine has determined to be the No. B machine 4B of FIG. 3 by the starting command output processing of S5, the departure interval time elapse determination unit of S9 of FIG. 2 determines the average departure interval of t0. It is determined whether or not time has elapsed, and when the time has elapsed, the advance reset processing in S10 of FIG. 2 is performed.
Output to. After that, by the door close button invalidation release processing in S11 of FIG. 2, the regulated door close button is released in S7,
It is up to the user to decide whether the car will start when the user presses the door close button or when the departure interval of the car ends.

Next, the processing for equalizing the departure intervals when there is one standby unit on the standard floor will be described. As shown in Fig. 4, while driving at work, Unit A 4A and Unit C 4C under group control
Exists on a floor other than the standard floor 4b2, and only the No. B 4B is waiting on the standard floor, the group management control unit 1 has activated the departure interval equalization processing operation of FIG. If there is no starting machine in the starting machine judging section of FIG. 4, the information of the elevator control section of S2 is received by the group control section 1 through the car information transmission line 8 of FIG. 1, and the starting machine selection process of S2 of FIG. It is determined that No. B machine 4B is the starting machine. Figure 2
In the starting machine target determination unit of S3 of No. 4, since the No. B machine 4B of FIG. 4 exists on the reference floor as the starting target machine of FIG.

The predicted time required for the No. A vehicle 4A of FIG. 4 to return to the standard floor 4b2 in the return prediction time calculation process of S31 of FIG. 7 is t1, and the No. C vehicle 4C of FIG. 4 returns to the standard floor. The predicted time required for is t3, and S32 in FIG.
In the minimum predicted time selection process of No. 4, the units other than the standard floor are the units A 4A and C 4C in FIG. 4, and the minimum predicted arrival time tmin is the units A 4A and C 4C3 after t3 seconds.
Since it is clearly predicted from the position that the No. C machine 4C3 is on the reference floor 4b2, t3 is calculated. Furthermore, S3 in FIG.
3 average departure interval time t0 = tmin / (Unit B 4B =
Since 1), t0 = t3 is calculated. That is, C
The estimated return time of the car 4C to the reference floor 4b2 is the average departure interval time.

Even if the average time between departures is long, the departure is delayed within the maximum value that the user can accept. Then, the advance command is output to the No. B machine 4B, and S27 of FIG.
The door close button invalid command is used to invalidate the door close button to prevent the calculated departure interval time from being destroyed. The process of FIG. 2 is entered again, and since the starting machine has been determined to be the No. B machine 4B of FIG. 4, the departure interval time elapse determination unit of S9 of FIG. 2 determines whether the average departure interval time of t0 has elapsed. However, when the elapsed time, that is, when the No. C machine 4C3 of FIG. 4 arrives at the reference floor 4b2, the advance reset processing of S10 of FIG. 2 is performed.
If the departure interval time has elapsed, the regulated door close button is released in S7 of FIG.

Finally, a process for equalizing the departure intervals when there is only one waiting machine on the standard floor and a long waiting time of 60 seconds or more is required for the other machines to return will be described. As shown in Fig. 5, while driving at work, group A microcomputers 4A and 4C are present on floors other than the standard floor under group management, and only group B 4B is on standby at the standard floor. See Figure 2
If the departure interval equalization processing of No. 1 is started and the starting machine determination unit of S1 of FIG. 2 does not exist, the information of the elevator control unit 2 of FIG. In step S2 of FIG. 2, the starting machine selection process determines that the No. B machine 4B of FIG. 5 is the starting machine. In the starting machine target determining unit of S3 of FIG. 2, since the No. B machine 4B of FIG. 5 is present as the starting machine of the starting number on the reference floor, S of FIG.
4. The departure interval time calculation process of No. 4 is entered. In the estimated return time calculation process of S31 of FIG. 7, the estimated time required for the car A of FIG. 5 to return to the reference floor is t1 and 60 seconds or more.

On the other hand, the predicted time required for the Unit C 4C in FIG. 5 to return to the reference floor is t2, and S32 in FIG.
In the minimum predicted time selection processing of No. 5, the vehicles other than the standard floor are the No. A 4A of FIG. 5 and the No. C 4C of FIG. 5, and the minimum predicted arrival time tmin is No. 4A3 and C of FIG. Since it is predicted that Unit A 4A3 is closer to the reference floor than the position of Unit 4C3, t1 is calculated. However, if Unit B 4B in Fig. 5 does not exist,
In this situation, since there is no starting machine for the starting machine selection process in S2 of FIG. 2, even if the departure interval is slightly changed, a long wait will occur on the reference floor, so in this case, the departure interval time Does not change. Returning to the example, the average departure interval time t0 = tmin / in S33 of FIG.
Since (5-4B machine = 1), t0 = t1 (60 seconds or more) is calculated.

That is, the estimated return time to the reference floor of the car No. 4A3 of FIG. 5 is the average departure time. However, if the door-closing button is disabled for 60 seconds and the departure is restricted, the flow of traffic will be stopped and the group control performance will deteriorate. Therefore, the average departure interval time is the maximum that the user can tolerate. The value is the average departure interval time. Thereafter, the advance command is output to the No. B machine 4B of FIG. 5, and the door close button is disabled by the door close button disable command of S7 of FIG. 2 to prevent the calculated departure interval time from being destroyed. The process of FIG. 2 is entered again, and since the starting machine has been determined to be the No. B machine 4B of FIG. 5, the departure interval time elapse determination unit of S9 of FIG. 2 determines whether the average departure interval time of t0 has elapsed. Then, when the time elapses, the advance reset processing of S10 of FIG.
If it is output to B and the departure interval time has elapsed, the regulated door close button is released in S7 of FIG.

As described in the above embodiment, the group control microcomputer calculates the expected arrival time of the car returning to the standard floor during the attendance time zone under the group management control regardless of the number of cars on the standard floor. By controlling the departure intervals of the departure machines of the standard floor so as to reduce the occurrence of the absence of standby units on the standard floor, the traveling intervals of the elevators can be equalized and the departure intervals can be equalized.

In addition, when the departure interval time of the departure machine of the standard floor exceeds a predetermined time and the door close button is pressed while the door close button in the car is invalid, the departure to the user is started. It is possible to prevent the user's discomfort from increasing by announcing the delay.

The present invention is not limited to the above-mentioned embodiment, but can be modified and implemented as follows, for example. In the above-described embodiment, the voice guidance device 7 shown in FIG. 1 is used as the notification means for notifying the user in the car that the departure is delayed.
, But the display that displays this with letters, or
You may make it combine this display and the above-mentioned voice guidance apparatus 7.

[0042]

According to the elevator group supervisory control apparatus of the present invention described above, the following operational effects can be obtained.
That is, in the time zone where there is a large demand in the predetermined direction from the standard floor, such as when going to work under group management control, the departure interval of the standard floor departure units is reduced so as to reduce the occurrence of the state without standby units on the standard floor. By performing the control, the traveling intervals of the elevators can be equalized and the departure intervals can be equalized.

Further, when the departure interval time of the standard floor departure machine exceeds a predetermined time and the door close button is pressed while the door close button in the car is invalid, the departure is delayed. By notifying that, it is possible to prevent the user's discomfort from increasing.

[Brief description of drawings]

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

FIG. 2 is a flowchart of the departure interval control process of FIG.

FIG. 3 is an explanatory diagram of delay time calculation when a plurality of elevator cars are present on the reference floor of FIG. 1.

FIG. 4 is an explanatory diagram of delay time calculation when there is only one car on the reference floor.

FIG. 5 is an explanatory diagram of delay time calculation in the case where one car is present on the reference floor and a long wait is required for another car to return.

FIG. 6 is a flow chart of in-car announcement processing during departure delay.

FIG. 7 is a flowchart of a departure interval time calculation process.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Group control part, 3a ... Standard floor hall call, 7 ... Voice guidance device, S7 ... Door closing button invalidation command processing part, S9 ... Departure interval time elapse determination part, S11 ... Door closing button invalidation cancellation processing part, S31
... Returning machine estimated time calculation processing unit, S33 ... Average departure interval calculation processing unit.

Claims (2)

[Claims] 1. An elevator group management control device for operating a plurality of elevator units on a plurality of service floors and controlling the operation of each elevator. Predicted arrival time calculation means for calculating the predicted arrival time of a vehicle returning to the reference floor in a large number of time zones, standby unit absence determination means for determining a state of no standby vehicle on the reference floor, and the predicted arrival time calculation According to the estimated arrival time calculated by the means and the determination result of the standby unit absence determining unit, the departure interval setting unit that sets the departure interval of the standard floor departure unit so that the state without standby units on the reference floor decreases. An elevator group supervisory control device comprising: 2. An elevator group supervisory control device that activates a plurality of elevator units on a plurality of service floors and controls the operation of each elevator. Predicted arrival time calculation means for calculating the predicted arrival time of a vehicle returning to the reference floor in a large number of time zones, standby unit absence determination means for determining a state of no standby vehicle on the reference floor, and the predicted arrival time calculation According to the estimated arrival time calculated by the means and the determination result of the standby unit absence determining unit, the departure interval setting unit that sets the departure interval of the standard floor departure unit so that the state without standby units on the reference floor decreases. Restraining means for restraining the departure by deactivating the door closing button in the car when the departure time of the departure unit of the standard floor exceeds a predetermined time, If the door 閉釦 is pressed when disabled, the group management control device for elevator and a notification means for notifying that delays the starting.