JP7392890B1 - Elevator group control device and elevator system - Google Patents

Abstract

An object of the present invention is to provide an elevator group management device that can adjust the timing of arrival notification according to the status of other cars that have not yet been determined to stop. [Solution] When it is determined that a first car is to stop in a first direction at a landing 7 where a first car is located, a first determining unit 15 determines whether there are a plurality of simultaneous arrival cars among the plurality of cars 2 before the arrival notification. Determine whether or not. When the first determining unit 15 determines that there are no multiple cars arriving at the same time, the second determining unit 17 determines whether there is a car that can be stopped among the multiple cars 2 excluding the first car. When the second determining unit 17 determines that there is a car that can be stopped, the adjusting unit 18 delays the start time of the arrival notification when the first car stops at the landing 7 by a third time. Thereby, for example, a highly convenient system for users waiting at the landing 7 can be provided. [Selection diagram] Figure 3

Description

The present disclosure relates to an elevator group management device and an elevator system.

Patent Document 1 describes an elevator notification device. In the elevator described in Patent Document 1, when another car arrives at a landing earlier than a car whose arrival at a certain landing is notified, the arrival notification of the other car is delayed.

Japanese Patent Application Publication No. 59-26874

Generally, the arrival notification for notifying the arrival of a car at a landing is set according to the time when the car stops at the landing. In conventional elevators, including the elevator described in Patent Document 1, control is not performed to adjust the timing of arrival notification in accordance with the status of other cars that have not yet been determined to stop.

The present disclosure has been made to solve the problems described above. An object of the present disclosure is to provide an elevator group management device and an elevator system that can adjust the timing of arrival notification according to the status of other cars that have not yet been determined to stop.

When the elevator group management device according to the present disclosure determines that the first car will stop at a certain landing in the first direction, the elevator group management device includes a first car that includes an expected time when the first car will stop at the landing, among the plurality of cars. a first determination unit that determines whether or not there are multiple simultaneous arrival cars stopping in the first direction at the landing before arrival notification; and when the first determination unit determines that there are no multiple simultaneous arrival cars; , a second determination unit that determines whether there is a stoppable car that can stop at the landing in the first direction within a second time period including the expected time among the plurality of cars other than the first car; and an adjustment unit that delays the start time of the arrival notification when the first car stops at the landing by a third time when the second determination unit determines that there is a car that can be stopped.

An elevator system according to the present disclosure includes a plurality of cars including a first car, and a group management device that manages the plurality of cars as a group. When the group control device determines that the first car will stop at the landing in the first direction, the group control device determines that the first car will arrive at the landing within a first time period including the expected time when the first car will stop at the landing, among the plurality of cars. a first determining unit that determines whether or not there are multiple simultaneously arriving cars before the arrival notification that stops in the first direction; and if the first determining unit determines that there are no multiple simultaneously arriving cars, the first determining unit removes the first car; a second determination unit that determines whether or not there is a stoppable car that can stop at the landing in the first direction within a second time period including the predicted time; If the second determining unit determines that there is, the adjusting unit delays the start time of the arrival notification when the first car stops at the landing by a third time.

With the group management device according to the present disclosure, the timing of arrival notification can be adjusted in accordance with the status of other cars that have not been determined to stop.

1 is a diagram schematically showing an elevator system in Embodiment 1. FIG. FIG. 3 is a diagram for explaining the functions of a group management device. It is a flow chart which shows an example of operation of an elevator system. It is a flow chart which shows another example of operation of an elevator system. FIG. 7 is a diagram for explaining other functions of the group management device. It is a flow chart which shows another example of operation of an elevator system. FIG. 3 is a diagram illustrating an example of hardware resources of a group management device. FIG. 7 is a diagram showing another example of hardware resources of the group management device.

A detailed explanation will be given below with reference to the drawings. Duplicate explanations will be simplified or omitted as appropriate. In each figure, the same reference numerals indicate the same or corresponding parts.

Embodiment 1.
FIG. 1 is a diagram schematically showing an elevator system 1 in the first embodiment. The elevator system 1 includes a plurality of cars 2. In the following, an example in which the elevator system 1 includes three cars 2 will be described. The elevator system 1 may include only two cars 2. The elevator system 1 may include four or more cars 2.

In the example shown in FIG. 1, the elevator system 1 includes a car 2 of an A car, a car 2 of a B car, and a car 2 of a C car. In the following, when it is necessary to distinguish an element of unit A from an element of other units, A is added after the symbol. Similarly, B is added after the code for the B-th car, and C is added after the code for the C-th car. For example, car No. A is written as car 2A. Similarly, the car of car No. B is written as car 2B, and the car of car No. C is called car 2C.

The car 2 moves up and down the hoistway 3. The control device 4 controls a hoist (not shown) for driving the car 2. That is, the movement of the car 2 is controlled by the control device 4. Group management device 5 communicates with each control device 4 . Further, the group management device 5 manages a plurality of cars 2 provided in the elevator system 1 as a group. In the example shown in FIG. 1, the group management device 5 manages cars 2A, 2B, and 2C.

FIG. 1 shows an example in which a control device 4 and a group management device 5 are provided in a machine room 6 above a hoistway 3. As another example, the control device 4 and the group management device 5 may be provided in the hoistway 3.

FIG. 1 shows a landing 7 provided on a certain floor in a building. The group management device 5 communicates with equipment provided at the landing 7. Each car 2 can be stopped at a landing 7. An alarm 8 is provided at the landing 7. An annunciator 8 notifies that the car 2 has arrived at the landing 7. In the following, this notification will also be referred to as arrival notification.

The alarm device 8 is controlled by the group management device 5. For example, the annunciator 8 notifies the arrival of the car 2 at the landing 7 by blinking. In the example shown in FIG. 1, the annunciator 8A notifies the arrival of the car 2A at the landing 7 by blinking. The alarm 8B notifies the arrival of the car 2B at the landing 7 by blinking. The annunciator 8C notifies the arrival of the car 2C at the landing 7 by blinking.

FIG. 2 is a diagram for explaining the functions of the group management device 5. As shown in FIG. The group management device 5 includes a storage section 10 . The group management device 5 also has a calculation unit 11, a first acquisition unit 12, a second acquisition unit 13, a notification control unit 14, a first determination unit 15, a third acquisition unit 16, and a second determination unit 17 as control functions. , and an adjustment section 18.

The storage unit 10 stores information indicating the floor on which each car 2 is scheduled to stop. In the following, this information will also be referred to as suspension decision information. The stop decision information also includes information indicating the moving direction of the car 2. For example, when it is determined that the car 2A moving downward is to stop at the 4th floor, information indicating "4th floor and downward" is newly stored in the storage unit 10 as stop determination information for the car 2A.

Furthermore, the storage unit 10 stores information indicating the start time of arrival notification for each piece of stop decision information. In the following, this information will also be referred to as notification time information. The broadcast time information may be information indicating the actual time or may be information indicating the time from the current time.

The calculation unit 11 calculates the start time of arrival notification. For example, when it is determined that the car 2A will stop at the fourth floor, the calculation unit 11 calculates the expected time when the car 2A will arrive at the fourth floor. The calculation unit 11 calculates the start time of the arrival notification to be performed when the car 2A arrives at the fourth floor, based on the expected time when the car 2A arrives at the fourth floor. The result calculated by the calculation unit 11 is stored in the storage unit 10 as notification time information. The function of the calculation unit 11 may be provided in each control device 4.

Next, referring also to FIG. 3, the operation of the elevator system 1 will be described. FIG. 3 is a flowchart showing an example of the operation of the elevator system 1. The operation flow shown in FIG. 3 is performed in short, constant cycles. In the following, an example in which the landing 7 shown in FIG. 1 is a landing on the fourth floor will be described in detail.

In the group management device 5, the first acquisition unit 12 acquires the stop decision information of each car 2 from the storage unit 10 (S101). Furthermore, the group management device 5 determines whether there is a car 2 that has been determined to be stopped from now on, based on the stoppage determination information acquired in S101 (S102). In the following, the car 2 will also be referred to as a stop decision car.

If the first acquisition unit 12 can acquire the stop decision information in S101, it is determined as Yes in S102. If the stop decision information is not stored in the storage unit 10, the first acquisition unit 12 cannot acquire the stop decision information in S101. If the first acquisition unit 12 cannot acquire the stop decision information in S101, the determination is No in S102. If the determination in S102 is No, the process ends.

If the determination is Yes in S102, the second acquisition unit 13 acquires notification time information for each car determined to be stopped (S103). Furthermore, the group management device 5 determines whether there is a car 2 whose arrival notification start time has passed based on the notification time information acquired in S103 (S104).

If any of the start times specified from the notification time information is past the current time, the determination in S104 is Yes. If the determination is Yes in S104, the notification control unit 14 performs arrival notification for the car 2 for which the arrival notification start time has passed (S105). As described above, the operation flow shown in FIG. 3 is performed at short, constant cycles. Therefore, the arrival notification in S105 is performed almost at the same time as the start time. For example, if the car 2C arrives at the landing 7, the notification control unit 14 causes the notification device 8C to blink in S105.

On the other hand, if there is no start time that is past the current time among the start times specified from the broadcast time information, the determination is No in S104.

Next, the first determination unit 15 determines whether there are a plurality of cars 2 before arrival notification that stop at the same landing in the same direction within a preset first time (S106). In the following, the car 2 will also be referred to as a simultaneous arrival car. The first time is, for example, 5 seconds.

As an example, consider a case where it is determined that the car 2A will stop at the landing 7 on the fourth floor in the downward direction. Immediately after the decision to stop the car 2A is made, the determination in S102 is Yes, and the determination in S104 is No.

In addition, when the decision to stop the car 2A is made, the first determination unit 15 determines that an incoming car that stops downward at the landing 7 on the fourth floor within a first time is selected from among the cars 2 managed by the group management device 5. It is determined whether or not there are multiple cars arriving at the same time before the notification (S106). The first time includes the expected time when the car 2A stops downward at the landing 7 on the fourth floor. The starting point of the first time may be the predicted time. Note that in this example, car 2A is one of the cars arriving at the same time. Therefore, the determination in S106 is equivalent to determining whether or not there is a car other than the car 2A that arrives at the same time among the plurality of cars 2 managed by the group management device 5.

For example, if the stop decision information for the car 2B and the car 2C is not stored in the storage unit 10, a negative determination is made in S106. When the first determination unit 15 determines that there are no multiple cars arriving at the same time (No in S106), the third acquisition unit 16 acquires the expected arrival time information of each car 2 from the storage unit 10 (S107). The expected arrival time information is information indicating the expected time when the car 2 is stopped at the same landing and in the same direction as the car 2 that has been decided to stop.

In this example, it is determined that the car 2A will stop at the landing 7 in the downward direction. Therefore, the expected arrival time information of the car 2A is information indicating the expected time when the car 2A will actually stop at the landing 7 in the downward direction. On the other hand, it has not been decided that the cars 2B and 2C will stop at the landing 7 in the downward direction. Therefore, regarding the expected arrival time information of car 2B, assuming that it has been determined that car 2B will stop at the landing 7 in the downward direction, the calculation unit 11 calculates the expected time of arrival. The same applies to the expected arrival time information of car 2C. In S107, the third acquisition unit 16 acquires the expected arrival time information of the car 2A, the expected arrival time information of the car 2B, and the expected arrival time information of the car 2C.

Next, the second determination unit 17 determines whether or not there is another car 2 that can stop in the same direction at the same landing as the car 2 that has been decided to stop within a preset second time period. is determined (S108). In the following, the car is also referred to as a car that can stop the other car. That is, the second determination unit 17 determines whether or not there is a car that can be stopped among the cars 2 excluding the car 2 that has been determined to be stopped in S108. The second time is, for example, 5 seconds. In this example, the second determination unit 17 determines whether or not it is possible for the car 2B and the car 2C to stop in the downward direction at the landing 7 within the second time period. The second time includes the expected time when the car 2A stops downward at the landing 7 on the fourth floor. The starting point of the second time may be the predicted time.

As an example, the second determination unit 17 determines the difference between the time when the car 2A arrives at the landing 7 and the time when the car 2B arrives at the landing 7, that is, the time difference of arrival, based on the estimated arrival time information acquired in S107. Calculate. The second determination unit 17 compares the calculated time difference with the second time, and if the time difference is within the second time, determines Yes in S108. Similarly, the second determination unit 17 determines Yes in S108 if the arrival time difference for the car 2A and the car 2C is within the second time period.

A stoppable car is a car that can become a simultaneous arrival car if a stop decision is made immediately after. As an example, consider a case where car 2B is determined to be stoppable. In this example, it has not been determined at this point that the car 2B will stop at the landing 7 in the downward direction. However, if it is determined that the car 2B will stop at the landing 7 in the downward direction immediately after this, the car 2B will arrive at the landing 7 immediately after the car 2A stops at the landing 7. At this time, if an arrival notification is issued from the annunciator 8A in accordance with the arrival of the car 2A, the car 2B, which arrives at the landing 7 later, will not be used much.

From the viewpoint of preventing such a phenomenon from occurring, when the second determination unit 17 determines that there is a car that can be stopped (Yes in S108), the adjustment unit 18 adjusts the arrival notification of the car 2 that has already been determined to be stopped. A process of delaying the start time is performed (S109). In this example, the adjustment unit 18 delays the start time of the arrival notification when the car 2A stops downward at the landing 7 by a preset third time. The third time is, for example, 1 second. Then, the notification time information stored in the storage unit 10 is updated based on the delay processing by the adjustment unit 18. That is, information on the start time newly set by the adjustment unit 18 is stored in the storage unit 10. Note that the number of times the notification time information can be updated may be set in advance.

Thereafter, for example, if it is determined that the car 2B will stop in the downward direction at the landing 7 before the arrival notification of the car 2A is made, the determination is Yes in S106. When the first determination unit 15 determines that there are multiple simultaneous arrival cars (Yes in S106), the adjustment unit 18 performs processing to adjust the start time of the arrival notification when the plurality of simultaneous arrival cars stop at the landing 7. (S110). In S110, the adjustment unit 18 adjusts the start time of the arrival notification to the start time of the car that arrives second at the landing 7 among the plurality of simultaneous arrival cars.

For example, if the start time of the arrival notification of car 2B, which was later decided to stop, is later than the start time of the arrival notification of car 2A, the adjustment unit 18 changes the start time of the arrival notification of car 2A to the arrival notification of car 2B. Match the start time of the notification. As a result, in S105, the arrival notification of the car 2A and the arrival notification of the car 2B are performed simultaneously.

In the example shown in this embodiment, even if there is only one car 2 that has been determined to stop, there is another car 2 that is likely to stop at the same landing and in the same direction as the car 2 within the second time period. Then, the start time of the arrival notification for the car 2 is delayed by the third time. That is, in the example shown in this embodiment, the timing of the arrival notification of the car 2 that has already been determined to be stopped can be adjusted in accordance with the situation of the other cars 2 that have not yet been determined to be stopped.

Furthermore, in the example shown in this embodiment, if a plurality of simultaneously arriving cars exist, the start time of the arrival notification matches the start time of the second arriving car among the plurality of simultaneously arriving cars. Therefore, the users at the landing 7 can know from the notification from the alarm 8 that the plurality of cars 2 have arrived at the landing 7 at almost the same time. When the landing area 7 is crowded, it is possible to avoid a rush of users to the car 2 that arrived at the landing area 7 first, and the effect of alleviating congestion can be expected. In addition, the user can decide which car 2 to ride by himself or herself, and a highly convenient system for users waiting at the landing 7 can be provided.

Note that the first time, second time, and third time are appropriately set according to the layout of the landing 7, the number of cars 2 managed by the group management device 5, and the like. The specific numerical values shown in the above example are just examples.

Below, other functions that can be adopted by the present elevator system 1 will be explained. If possible, the elevator system 1 may employ a combination of the following functions.

FIG. 4 is a flowchart showing another example of the operation of the elevator system 1. The operational flow shown in FIG. 4 differs from the operational flow shown in FIG. 3 in that S111 is added. Further, in the operation flow shown in FIG. 4, the process in S107 is partially different from the process described above. Other processes shown in FIG. 4 are similar to the corresponding processes shown in FIG. 3. In the example shown in FIG. 4, a combination of cars 2 for adjusting the start time of arrival notification is set in advance. The combination is stored in the storage unit 10.

As an example, consider a case where the entrances and exits of cars D to F are arranged with the landing 7 in between so as to face the entrances of cars A to C in FIG. That is, the group management device 5 manages the six cars 2 as a group. In this example, even if the alarm 8A, the alarm 8B, and the alarm 8F blink at the same time, it is difficult for the user to notice that the alarm 8F is blinking. For this reason, the car 2A, the car 2B, and the car 2C are set as the first combination, and the car 2D, the car 2E, and the car 2F are set as the second combination. Note that the first combination includes only some of the cars 2 managed by the group management device 5. Similarly, the second combination includes only some of the cars 2 managed by the group management device 5.

In the example shown in FIG. 4, when the determination in S106 is No, the third acquisition unit 16 retrieves the expected arrival time information of each car 2 included in the same combination as the car 2 that has been decided to stop, from the storage unit 10. Acquire (S107). In the above example in which the car 2A is determined to stop downward at the landing 7 on the 4th floor, the third acquisition unit 16, in S107, obtains the expected arrival time information of the car 2A, the expected arrival time information of the car 2B, and obtains information on the expected arrival time of car 2C. If the car determined to be stopped is the car 2D, the third acquisition unit 16 acquires the expected arrival time information of the car 2D, the expected arrival time information of the car 2E, and the expected arrival time information of the car 2F in S107. Then, the second determining unit 17 determines whether there is a car that can be stopped among the cars 2 included in the same combination as the car 2 that has been determined to be stopped.

On the other hand, if the first determination unit 15 determines that there are multiple simultaneous arrival cars (Yes at S106), the group management device 5 determines whether the multiple simultaneous arrival cars are included in one preset combination. It is further determined whether or not (S111). For example, if the plurality of simultaneously arriving cars determined in S106 are car 2A and car 2B, the determination is Yes in S111 because car 2A and car 2B are included in the first combination. As another example, if the plurality of simultaneously arriving cars determined in S106 are car 2D and car 2E, the determination is Yes in S111 because car 2D and car 2E are included in the second combination.

On the other hand, if the plurality of simultaneously arriving cars determined in S106 are car 2A and car 2F, the determination in S111 is No. If the determination in S111 is No, the process shown in S107 is performed.

If the determination in S111 is Yes, the process shown in S110 is performed. That is, when the determination in S106 is Yes and the determination in S111 is Yes, the adjustment unit 18 sets the arrival notification start time to the start time of the car that arrives second at the landing 7 among the plurality of simultaneous arrival cars. Match.

In the example shown in FIG. 4, it is possible to prevent the users at the landing 7 from being confused, and it is possible to provide a system that is more convenient for the users waiting at the landing 7.

FIG. 5 is a diagram for explaining other functions of the group management device 5. In the example shown in FIG. 5, the group management device 5 further includes a specifying section 19 as a control function.

FIG. 6 is a flowchart showing another example of the operation of the elevator system 1. The operational flow shown in FIG. 6 differs from the operational flow shown in FIG. 3 or 4 in that S112 to S114 are added. Note that the processes shown in S101 to S104 in FIG. 6 are similar to the corresponding processes shown in FIG. 3. Moreover, the process shown in FIG. 3 may be performed as the process after S105, or the process shown in FIG. 4 may be performed.

In the example shown in FIGS. 5 and 6, first information regarding the specifications inside each car 2 is stored in the storage unit 10. As an example, the first information includes information indicating the capacity of the car 2. The first information may include information indicating the presence or absence of a handrail. The first information may include information indicating the presence or absence of a sub-operation panel. The first information is not limited to the above example. The first information may not include the information shown above, or may include other information not shown above. In the example shown in FIGS. 5 and 6, second information regarding the congestion status of each car 2 is stored in the storage unit 10. Preferably, the second information is updated at regular intervals.

In the example shown in FIG. 4, if it is determined Yes in S104, it is determined whether there is a plurality of cars 2 for which the arrival notification start time has passed (S112). If the determination in S112 is No, the process in S105 is performed.

For example, if it is determined Yes in S104 for a plurality of simultaneously arriving cars whose arrival notification start times have been matched in S110, then it is determined Yes in S112. If the determination is Yes in S112, the identifying unit 19 determines whether there is a difference in the situation or specifications of the plurality of simultaneously arriving cars (S113). As an example, the determination in S113 is performed based on the first information and second information stored in the storage unit 10.

When determining Yes in S113, the specifying unit 19 specifies difference information regarding the plurality of simultaneously arriving cars. The difference information may be information regarding a difference in specifications within the car 2. The difference information may be information regarding the difference in the congestion status of car 2. When the notification control unit 14 determines Yes in S112, the notification control unit 14 notifies the landing 7 of the difference information specified by the identification unit 19 together with the arrival notification when the plurality of simultaneously arriving cars stop at the landing 7 (S114). .

The difference information may be notified by any method. The difference information may be notified from a speaker provided in the hall 7 or a display provided in the hall 7. Further, the notification of the difference information may be performed at any timing as long as it is performed together with the arrival notification. The notification of the difference information may be started before the arrival notification or may be started after the arrival notification.

In the example shown in FIGS. 5 and 6, the user at the landing 7 can select the car 2 to board after also considering the difference information. The examples shown in FIGS. 5 and 6 can provide a system that is even more convenient for users waiting at the landing 7.

FIG. 7 is a diagram showing an example of hardware resources of the group management device 5. As shown in FIG. The group management device 5 includes a processing circuit 20 including a processor 21 and a memory 22 as hardware resources. The processing circuit 20 may include a plurality of processors 21. The processing circuit 20 may include a plurality of memories 22.

In this embodiment, each unit indicated by reference numerals 10 to 19 indicates a function that the group management device 5 has. The functions of the storage unit 10 are realized by the memory 22. The functions of each part shown by reference numerals 11 to 19 can be realized by software written as a program, firmware, or a combination of software and firmware. The program is stored in the memory 22. The group management device 5 realizes the functions of each section indicated by reference numerals 11 to 19 by having a processor 21 (computer) execute a program stored in a memory 22.

The processor 21 is also called a CPU (Central Processing Unit), central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, or DSP. As the memory 22, a semiconductor memory, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, or a DVD may be used. Semiconductor memories that can be employed include RAM, ROM, flash memory, EPROM, EEPROM, and the like.

FIG. 8 is a diagram showing another example of the hardware resources of the group management device 5. In the example shown in FIG. 8, the group management device 5 includes a processing circuit 20 including a processor 21, a memory 22, and dedicated hardware 23. FIG. 8 shows an example in which some of the functions of the group management device 5 are realized by dedicated hardware 23. All of the functions of the group management device 5 may be realized by dedicated hardware 23. The dedicated hardware 23 can be a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.

1 elevator system, 2 car, 3 hoistway, 4 control device, 5 group management device, 6 machine room, 7 landing, 8 alarm, 10 storage section, 11 calculation section, 12 first acquisition section, 13 second acquisition section , 14 notification control unit, 15 first determination unit, 16 third acquisition unit, 17 second determination unit, 18 adjustment unit, 19 identification unit, 20 processing circuit, 21 processor, 22 memory, 23 dedicated hardware

Claims (5)

A group management device that manages a plurality of cars including a first car as a group,
When it is determined that the first car will stop at a certain landing in the first direction, among the plurality of cars, there is a car that will arrive at the landing within a first time period including the expected time when the first car will stop at the landing. a first determination unit that determines whether or not there are a plurality of simultaneously arriving cars stopping in the first direction before the arrival notification;
If the first determining unit determines that there are no cars arriving at the same time, among the cars excluding the first car, there is a car arriving at the landing in the first direction within a second time period including the predicted time. a second determination unit that determines whether there is a stoppable car that can be stopped at
When the second determining unit determines that there is the car that can be stopped, an adjusting unit that delays the start time of arrival notification when the first car stops at the landing by a third time;
Elevator group control device equipped with When the first determination unit determines that there are the plurality of simultaneous arrival cars, the adjustment unit determines the start time of arrival notification when the plurality of simultaneous arrival cars stop at the landing area. The elevator group management device according to claim 1, wherein the elevator group management device synchronizes with the start time of the arrival notification of the second car to arrive at the landing. A combination including only some of the plurality of baskets is set in advance,
The adjustment unit causes the plurality of simultaneous arrival cars to stop at the landing when the first determination unit determines that there are the plurality of simultaneous arrival cars and the plurality of simultaneous arrival cars are included in the combination. 3. The elevator group management device according to claim 2, wherein the start time of the first arrival notification is adjusted to the start time of the arrival notification of the second car to arrive. a specifying unit that specifies difference information regarding the plurality of simultaneously arriving cars whose arrival notification start times are matched;
a notification control unit that notifies the difference information specified by the identification unit to the landing area together with an arrival notification when the plurality of simultaneously arriving cars stop at the landing area;
further comprising;
The elevator group management device according to claim 2 or 3, wherein the difference information includes information regarding congestion status or information regarding specifications within the car. a plurality of baskets including a first basket;
a group management device that manages the plurality of cars as a group;
Equipped with
The group management device includes:
When it is determined that the first car will stop at a certain landing in the first direction, among the plurality of cars, there is a car that will arrive at the landing within a first time period including the expected time when the first car will stop at the landing. a first determination unit that determines whether or not there are a plurality of simultaneously arriving cars stopping in the first direction before the arrival notification;
If the first determining unit determines that there are no cars arriving at the same time, among the cars excluding the first car, there is a car arriving at the landing in the first direction within a second time period including the predicted time. a second determination unit that determines whether there is a stoppable car that can be stopped at
When the second determining unit determines that there is the car that can be stopped, an adjusting unit that delays the start time of arrival notification when the first car stops at the landing by a third time;
Elevator system with.

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