Group management device of elevators and elevator system

Abstract

Group management device of elevators and elevator system. It is able to adjust the time of arrival notification in accordance with the situation of other cars that are not decided to stop. When a first car is decided to stop at a certain landing (7) in a first direction, a first determination section (15) determines whether there are multiple simultaneous arrival cars before the arrival notification in multiple cars (2). A second determination section (17) determines whether there is a possible stopping car among multiple cars (2) other than the first car when the first determination section (15) determines that there are no multiple simultaneous arrival cars. An adjustment section (18) delays the start time of the arrival notification when the first car stops at the landing (7) by a third time when the second determination section (17) determines that there is a possible stopping car. Thus, for example, a system with high convenience for users waiting at the landing (7) can be provided.

Description

Technical Field

[0001] This invention relates to a group management device for elevators and an elevator system. Background Technology

[0002] Patent Document 1 describes an elevator notification device. In the elevator described in Patent Document 1, if other cars arrive at a floor earlier than the car that has been notified to arrive at a certain floor, the arrival notification of the other cars is delayed.

[0003] Existing technical documents

[0004] Patent Document 1: Japanese Patent Application Publication No. 59-26874 Summary of the Invention

[0005] Typically, arrival notifications, indicating when a car will arrive at a floor, are set based on the time the car will stop at that floor. In existing elevators, including the one described in Patent Document 1, there is no control to adjust the arrival notification timing in accordance with the status of other cars that have not yet decided to stop.

[0006] This invention was made to solve the problems described above. The object of this invention is to provide an elevator group management device and elevator system capable of adjusting the arrival notification time according to the status of other cars that have not yet decided to stop.

[0007] The elevator group management device of the present invention comprises: a first determination unit, which, when a first car determines that it will stop at a certain floor in a first direction, determines whether, within a first time period including the expected time when the first car stops at the floor, there are multiple cars that arrive simultaneously before the arrival notification for stopping at the floor in the first direction; a second determination unit, which, when the first determination unit determines that there are no multiple cars that arrive simultaneously, determines whether, within a second time period including the expected time, there is a possible car that can stop at the floor in the first direction among the multiple cars other than the first car; and an adjustment unit, which, when the second determination unit determines that there is a possible car that can stop, delays the start time of the arrival notification for the first car stopping at the floor by a third time period.

[0008] The elevator system of the present invention includes: a plurality of cars, including a first car; and a group management device that manages the plurality of cars as a group. The group management device includes: a first determination unit that, when the first car determines that it will stop at a certain floor in a first direction, determines whether, within a first time period including the expected time when the first car stops at the floor, there are multiple cars that arrive simultaneously before the arrival notification for stopping at the floor in the first direction; a second determination unit that, when the first determination unit determines that there are no multiple cars that arrive simultaneously, determines whether, within a second time period including the expected time, there are multiple cars other than the first car that could potentially stop at the floor in the first direction; and an adjustment unit that, when the second determination unit determines that there are potential cars that could potentially stop at the floor, delays the start time of the arrival notification for the first car stopping at the floor by a third time period.

[0009] Invention Effects

[0010] According to the group management device of the present invention, the arrival notification time can be adjusted in accordance with the status of other cars that have not yet decided to stop. Attached Figure Description

[0011] Figure 1 This is a schematic diagram illustrating the elevator system in Embodiment 1.

[0012] Figure 2 This is a diagram used to illustrate the functions of a group management device.

[0013] Figure 3 This is a flowchart illustrating an example of the operation of an elevator system.

[0014] Figure 4 This is a flowchart illustrating another example of the operation of an elevator system.

[0015] Figure 5 This is a diagram used to illustrate another function of the group management device.

[0016] Figure 6 This is a flowchart illustrating another example of the operation of an elevator system.

[0017] Figure 7 This is a diagram illustrating an example of the hardware resources of a group management device.

[0018] Figure 8 This is another example of the hardware resources of a group management device.

[0019] Label Explanation

[0020] 1: Elevator system; 2: Car; 3: Shaft; 4: Control device; 5: Group management device; 6: Machine room; 7: Floor; 8: Notifier; 10: Storage unit; 11: Calculation unit; 12: First acquisition unit; 13: Second acquisition unit; 14: Notification control unit; 15: First determination unit; 16: Third acquisition unit; 17: Second determination unit; 18: Adjustment unit; 19: Determination unit; 20: Processing circuit; 21: Processor; 22: Memory; 23: Dedicated hardware. Detailed Implementation

[0021] The following is a detailed description with reference to the accompanying drawings. Repetitive descriptions have been simplified or omitted where appropriate. In the drawings, the same reference numerals denote the same or equivalent parts.

[0022] Implementation Method 1

[0023] Figure 1 This diagram schematically illustrates the elevator system 1 in Embodiment 1. The elevator system 1 includes multiple cars 2. Hereinafter, an example of the elevator system 1 having three cars 2 will be described. The elevator system 1 may also have only two cars 2. The elevator system 1 may also have four or more cars 2.

[0024] exist Figure 1 In the example shown, elevator system 1 has car 2 of unit A, car 2 of unit B, and car 2 of unit C. Hereinafter, when it is necessary to distinguish elements of unit A from those of other units, "A" will be added after the number. Similarly, for unit B, "B" will be added after the number, and for unit C, "C" will be added after the number. For example, the car of unit A will be referred to as car 2A. Similarly, the car of unit B will be referred to as car 2B, and the car of unit C will be referred to as car 2C.

[0025] The car 2 moves up and down in the hoistway 3. The control device 4 controls the traction machine (not shown) that drives the car 2. That is, the movement of the car 2 is controlled by the control device 4. The group management device 5 communicates with each control device 4. Furthermore, the group management device 5 manages the multiple cars 2 of the elevator system 1 as a group. Figure 1 In the example shown, the group management device 5 manages cars 2A, 2B, and 2C.

[0026] Figure 1 An example is shown where the control device 4 and the group management device 5 are located in the machine room 6 above the shaft 3. Alternatively, the control device 4 and the group management device 5 may also be located in the shaft 3.

[0027] Figure 1This diagram shows a landing station 7 located on a floor within a building. A group management device 5 communicates with the equipment located at landing station 7. Each car 2 can stop at landing station 7. A notification device 8 is installed at landing station 7. The notification device 8 notifies the car 2 that it is about to arrive at landing station 7. Hereinafter, this notification will also be referred to as an arrival notification.

[0028] Notifier 8 is controlled by group management device 5. For example, notifier 8 notifies car 2 that it is about to arrive at floor 7 by flashing. Figure 1 In the example shown, notifier 8A flashes to inform car 2A that it is about to arrive at floor 7. Notifier 8B flashes to inform car 2B that it is about to arrive at floor 7. Notifier 8C flashes to inform car 2C that it is about to arrive at floor 7.

[0029] Figure 2 This diagram illustrates the functions of the group management device 5. The group management device 5 includes a storage unit 10. In addition, as a control function, the group management device 5 includes 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, a second determination unit 17, and an adjustment unit 18.

[0030] In the storage unit 10, information indicating the floor to which the car 2 will stop is stored for each car 2. This information will also be referred to as the stopping decision information below. The stopping decision information also includes information indicating the direction of movement of the car 2. For example, when it is decided that car 2A, which is moving in the downward direction, will stop at the 4th floor, the storage unit 10 newly stores information indicating "4th floor and downward direction" as the stopping decision information for car 2A.

[0031] Furthermore, the storage unit 10 stores information indicating the start time of arrival notification for each docking decision. This information will also be referred to as notification time information below. The notification time information can be information indicating the actual time or information indicating the time since the current time.

[0032] The calculation unit 11 calculates the start time of the arrival notification. For example, when it is determined that car 2A will stop at the 4th floor, the calculation unit 11 calculates the estimated time when car 2A will arrive at the 4th floor. Based on the estimated time when car 2A will arrive at the 4th floor, the calculation unit 11 calculates the start time of the arrival notification to be issued when car 2A arrives at the 4th 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 can also be provided in each control device 4.

[0033] Next, also refer to Figure 3 The operation of elevator system 1 will be explained. Figure 3 This is a flowchart illustrating an example of the operation of elevator system 1. Figure 3The illustrated action sequence is performed in a relatively short, fixed cycle. The following describes... Figure 1 The example of a 4-story station, shown in section 7, will be explained in detail.

[0034] In the group management device 5, the first acquisition unit 12 acquires the stopping decision information of each car 2 from the storage unit 10 (S101). Furthermore, in the group management device 5, based on the stopping decision information acquired in S101, it determines whether there is a car 2 that has been decided to stop from now on (S102). Hereinafter, this car 2 will also be referred to as the stopping decision car.

[0035] If the first acquisition unit 12 can acquire the docking decision information in S101, then the result is determined to be "yes" in S102. If the docking decision information is not stored in the storage unit 10, then the first acquisition unit 12 cannot acquire the docking decision information in S101. If the first acquisition unit 12 fails to acquire the docking decision information in S101, then the result is determined to be "no" in S102. When the result is determined to be "no" in S102, the process ends.

[0036] When the determination is "yes" in S102, the second acquisition unit 13 acquires notification time information for each stopping decision car (S103). In addition, in the group management device 5, based on the notification time information acquired in S103, it is determined whether there is a car 2 that has passed the start time of the arrival notification (S104).

[0037] If there is a start time that exceeds the current time among the start times determined according to the notification time information, it is determined to be "yes" in S104. When it is determined to be "yes" in S104, the notification control unit 14 sends an arrival notification to the car 2 that has passed the start time of the arrival notification (S105). As described above, Figure 3 The illustrated operation flow is performed with a relatively short fixed cycle. Therefore, the arrival notification in S105 occurs almost simultaneously with its start time. For example, if car 2C is about to arrive at floor 7, the notification control unit 14 causes the notification device 8C to flash in S105.

[0038] On the other hand, if there is no start time beyond the current time among the start times determined according to the notification time information, then it is determined as "No" in S104.

[0039] Next, the first determination unit 15 determines whether there are multiple cars 2 that have arrived at the same floor in the same direction within a preset first time period (S106). Hereinafter, these cars 2 will also be referred to as simultaneously arriving cars. The first time period is, for example, 5 seconds.

[0040] As an example, consider the case where car 2A is decided to stop at floor 7 on the 4th floor in the downward direction. If this decision to stop car 2A was made just now, it is judged as "yes" in S102 and "no" in S104.

[0041] Furthermore, when making the stopping decision for car 2A, the first determination unit 15 determines whether there are multiple cars arriving simultaneously within the group management device 5's managed cars 4 before the arrival notification for car 2 stopping at floor 4 in the downward direction within a first time period (S106). This first time period includes the estimated time when car 2A stops at floor 7 in the downward direction. The starting point of the first time period can also be this estimated time. In this example, car 2A is one of the cars arriving simultaneously. Therefore, the determination in S106 is synonymous with determining whether there are cars other than car 2A arriving simultaneously among the multiple cars 2 managed by the group management device 5.

[0042] For example, if the storage unit 10 does not store the stopping decision information for cars 2B and 2C, then a "No" decision is made in S106. When the first determination unit 15 determines that there are no multiple cars arriving simultaneously ("No" in S106), the third acquisition unit 16 acquires the estimated arrival time information for each car 2 from the storage unit 10 (S107). The estimated arrival time information indicates the estimated time of stopping when the car 2 that is determined to stop stops at the same floor in the same direction.

[0043] In this example, car 2A is determined to stop at floor 7 in the downward direction. Therefore, the estimated arrival time information of car 2A indicates the estimated time when car 2A will actually stop at floor 7 in the downward direction. On the other hand, for cars 2B and 2C, the estimated arrival time at floor 7 in the downward direction has not been determined. Therefore, regarding the estimated arrival time information of car 2B, assuming that car 2B will stop at floor 7 in the downward direction, the calculation unit 11 calculates the estimated arrival time. The same applies to the estimated arrival time information of car 2C. In S107, the third acquisition unit 16 acquires the estimated arrival time information of car 2A, car 2B, and car 2C.

[0044] Next, the second determination unit 17 determines whether, within a predetermined second time period, there are other cars 2 that might stop at the same floor in the same direction as the car 2 that was decided to stop (S108). Hereinafter, these other cars will also be referred to as potential stopping cars. That is, the second determination unit 17 determines in S108 whether there are any potential stopping cars among the cars 2 other than the car 2 that was decided to stop. The second time period is, for example, 5 seconds. In this example, the second determination unit 17 determines whether cars 2B and 2C can stop at floor 7 in the downward direction within the second time period. This second time period includes the estimated time when car 2A stops at floor 7 on the 4th floor in the downward direction. The starting point of the second time period can also be this estimated time.

[0045] As an example, the second determination unit 17 calculates the difference between the arrival time of car 2A and the arrival time of car 2B at floor 7, i.e., the arrival time difference, based on the estimated arrival time information obtained in S107. The second determination unit 17 compares the calculated time difference with a second time; if the time difference is within the second time, it determines "yes" in S108. Similarly, regarding cars 2A and 2C, if the arrival time difference is within the second time, the second determination unit 17 determines "yes" in S108.

[0046] A car that is likely to stop is one that can be made to arrive at the same time as another car by making a stopping decision immediately afterward. As an example, consider the case where car 2B is determined to be a car that is likely to stop. In this example, at the current moment, car 2B has not been decided to stop at floor 7 in the down direction. However, if it is decided immediately afterward that car 2B will stop at floor 7 in the down direction, car 2B will arrive at floor 7 just after car 2A has stopped. In this case, if an arrival notification is sent from the notification device 8A in conjunction with the arrival of car 2A, car 2B, arriving at floor 7 afterward, will be almost entirely underutilized.

[0047] From the viewpoint of preventing such a phenomenon, when the second determination unit 17 determines that there is a possible stopping car (S108 "Yes"), the adjustment unit 18 performs a process that delays the start time of the arrival notification for the car 2 that has already been determined to stop (S109). In this example, the adjustment unit 18 delays the start time of the arrival notification for car 2A when it stops at floor 7 in the downward direction by a preset third time. The third time is, for example, 1 second. Furthermore, the notification time information stored in the storage unit 10 is updated based on the delay processing performed by the adjustment unit 18. That is, the information of the newly set start time by the adjustment unit 18 is stored in the storage unit 10. In addition, the number of times the notification time information can be updated can also be preset.

[0048] Subsequently, for example, if it is determined that car 2B will stop at floor 7 in the downward direction before the arrival notification of car 2A is issued, it is determined to be "yes" in S106. If the first determination unit 15 determines that there are multiple cars arriving simultaneously ("yes" in S106), the adjustment unit 18 performs a process to make the start time of the arrival notifications for the multiple cars arriving simultaneously at floor 7 consistent (S110). In S110, the adjustment unit 18 makes the start time of the arrival notification consistent with the start time of the car that arrives at the second floor 7 among the multiple cars arriving simultaneously.

[0049] For example, if the start time of the arrival notification for car 2B, which subsequently made a stopping decision, is later than the start time of the arrival notification for car 2A, the adjustment unit 18 makes the start time of the arrival notification for car 2A consistent with the start time of the arrival notification for car 2B. Thus, in S105, the arrival notifications for car 2A and car 2B are issued simultaneously.

[0050] In the example shown in this embodiment, even if only one car 2 has been decided to stop, if there are other cars 2 expected to stop at the same floor as car 2 in the same direction within a second time period, the start time of the arrival notification for car 2 is delayed by a third time period. That is, in the example shown in this embodiment, the arrival notification time of the car 2 that has been decided to stop can be adjusted according to the status of other cars 2 that have not yet decided to stop.

[0051] Furthermore, in the example shown in this embodiment, if multiple cars arrive simultaneously, the start time of the arrival notification is made consistent with the start time of the second car to arrive among the multiple cars arriving simultaneously. Therefore, users at floor 7 can be informed via notification from the notifier 8 that multiple cars 2 will arrive at floor 7 almost simultaneously. In the event of congestion at floor 7, this prevents users from crowding into the cars 2 that arrive at floor 7 first, and can be expected to alleviate congestion. Additionally, users can decide which car 2 to take, providing a highly convenient system for users waiting at floor 7.

[0052] Furthermore, the first, second, and third times are appropriately set based on the layout of the landing 7 and the number of cars 2 managed by the group management device 5. The specific values ​​shown in the above example are just one example.

[0053] The following describes other functions that can be used in this elevator system 1. If possible, elevator system 1 may also combine multiple functions as shown below.

[0054] Figure 4 This is a flowchart illustrating another example of the operation of elevator system 1. Figure 4 The illustrated action flow and Figure 3The difference in the illustrated action flow is the addition of S111. Additionally, in Figure 4 The processing in S107 of the illustrated action flow differs from the processing described above in some aspects. Figure 4 Other processing shown Figure 3 The corresponding processing is the same. Figure 4 In the example shown, the combination of car 2 is pre-set to adjust the start time of arrival notification. This combination is stored in the storage unit 10.

[0055] As an example, consider with Figure 1 In this example, the entrances / exits of cars A through C are positioned opposite each other on floor 7, while the entrances / exits of cars D through F are located on the same floor. That is, the group management device 5 manages the six cars 2 as a group. In this example, even if announcers 8A, 8B, and 8F flash simultaneously, the user would have difficulty noticing that announcer 8F is flashing. For this reason, cars 2A, 2B, and 2C are designated as the first group, and cars 2D, 2E, and 2F are designated as the second group. Furthermore, the first group only includes a portion of the cars 2 managed by the group management device 5. Similarly, the second group only includes a portion of the cars 2 managed by the group management device 5.

[0056] exist Figure 4 In the example shown, when the determination is "no" in S106, the third acquisition unit 16 acquires the estimated arrival time information of each car 2 included in the same combination as the car 2 that has been determined to stop (S107) from the storage unit 10. If it is the example above where car 2A is determined to stop at floor 7 on the 4th floor in the downward direction, then the third acquisition unit 16 acquires the estimated arrival time information of car 2A, car 2B, and car 2C in S107. If the car that is determined to stop is car 2D, then the third acquisition unit 16 acquires the estimated arrival time information of car 2D, car 2E, and car 2F in S107. Then, the second determination unit 17 determines whether there is a possible stopping car among the car 2 included in the same combination as the car 2 that has been determined to stop.

[0057] On the other hand, when the first determination unit 15 determines that multiple cars arrive simultaneously (S106 "Yes"), the group management device 5 further determines whether the multiple cars arriving simultaneously are included in a pre-set group (S111). For example, if the multiple cars arriving simultaneously determined in S106 are cars 2A and 2B, then since cars 2A and 2B are included in the first group, it is determined to be "Yes" in S111. As another example, if the multiple cars arriving simultaneously determined in S106 are cars 2D and 2E, then since cars 2D and 2E are included in the second group, it is determined to be "Yes" in S111.

[0058] On the other hand, if the multiple cars that arrive simultaneously as determined in S106 are cars 2A and 2F, then the determination in S111 is "No". If the determination in S111 is "No", then the process shown in S107 is performed.

[0059] If the determination is "yes" in S111, the process shown in S110 is performed. That is, when the determination is "yes" in both S106 and S111, the adjustment unit 18 makes the start time of the arrival notification consistent with the start time of the car of the second arrival floor 7 among the plurality of cars that arrive at the same time.

[0060] according to Figure 4 The example shown can prevent confusion for users on floor 7 and provide a more convenient system for users waiting on floor 7.

[0061] Figure 5 This diagram illustrates other functions of the group management device 5. Figure 5 In the example shown, as a control function, the group management device 5 also has a determination unit 19.

[0062] Figure 6 This is a flowchart illustrating another example of the operation of elevator system 1. Figure 6 The illustrated action flow differs from the addition of S112 to S114 in that... Figure 3 or Figure 4 The illustrated action sequences are different. Furthermore, Figure 6 The processing shown in S101 to S104 is similar to Figure 3 The corresponding processing shown is the same. Additionally, processing after S105 can be performed... Figure 3 The process shown can also be performed. Figure 4 The processing shown.

[0063] exist Figure 5 and Figure 6In the example shown, the storage unit 10 stores first information related to the specifications of each car 2. As an example, the first information includes information indicating the capacity of the car 2. The first information may also include information indicating whether there are handrails. The first information may also include information indicating whether there is a sub-control panel. The first information is not limited to the example described above. The first information may not include the information shown above, or it may include other information not shown above. Furthermore, in... Figure 5 and Figure 6 In the example shown, the storage unit 10 stores second information related to the crowding status of each car 2. The second information is preferably updated at a fixed period.

[0064] exist Figure 4 In the example shown, when the determination is "yes" in S104, it is determined whether there are multiple cars 2 that have passed the start time of the arrival notification (S112). When the determination is "no" in S112, the process in S105 is performed.

[0065] For example, if multiple cars arriving simultaneously with the arrival notification start time set to be consistent in S110 are determined to be "yes" in S104, they are also determined to be "yes" in S112. When determined to be "yes" in S112, the determination unit 19 determines whether there are any differences in the condition or specifications of the multiple cars arriving simultaneously (S113). As an example, the determination in S113 is based on the first information and the second information stored in the storage unit 10.

[0066] When the determination unit 19 determines "yes" in S113, it determines differential information for the multiple cars that arrive simultaneously. The differential information may be information related to differences in specifications within car 2. The differential information may also be information related to differences in the crowding situation of car 2. When the determination unit 19 determines "yes" in S112, it notifies the control unit 14 to notify the floor 7 of the differential information determined by the determination unit 19, along with the arrival notifications when the multiple cars arrive simultaneously and stop at floor 7 (S114).

[0067] Differential information notification can be delivered by any method. It can be delivered via a speaker located on floor 7 or via a display located on floor 7. Furthermore, differential information notification can occur at any time, as long as it is delivered together with the arrival notification. The notification can begin before or after the arrival notification.

[0068] in the case of Figure 5 and Figure 6 In the example shown, a user at floor 7 can select the car 2 they wish to ride in, taking into account differential information. According to... Figure 5 and Figure 6The example shown provides a system that offers greater convenience for users waiting on floor 7.

[0069] Figure 7 This diagram illustrates an example of the hardware resources of the group management device 5. The group management device 5 includes a processing circuit 20 comprising a processor 21 and a memory 22 as hardware resources. The processing circuit 20 may also include multiple processors 21. The processing circuit 20 may also include multiple memories 22.

[0070] In this embodiment, the parts indicated by reference numerals 10 to 19 represent the functions of the group management device 5. The functions of the storage unit 10 are implemented by the memory 22. The functions of the parts indicated by reference numerals 11 to 19 can be implemented by software, firmware, or a combination of software and firmware described as a program. This program is stored in the memory 22. The group management device 5 implements the functions of the parts indicated by reference numerals 11 to 19 by executing the program stored in the memory 22 by the processor 21 (computer).

[0071] The processor 21 is also known as a CPU (Central Processing Unit), central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, or DSP. The memory 22 can also be a semiconductor memory, disk, floppy disk, optical disk, compact optical disk, mini-disk, or DVD. Suitable semiconductor memories include RAM, ROM, flash memory, EPROM, and EEPROM.

[0072] Figure 8 This diagram illustrates another example of the hardware resources of the group management device 5. Figure 8 In the example shown, the group management device 5 has a processing circuit 20 that includes a processor 21, a memory 22, and dedicated hardware 23. Figure 8 This illustration shows an example of a portion of the functions of the group management device 5 implemented using dedicated hardware 23. All the functions of the group management device 5 can also be implemented using dedicated hardware 23. The dedicated hardware 23 can be a single circuit, a composite circuit, a programming processor, a parallel programming processor, an ASIC, an FPGA, or a combination thereof.

Claims

1. A group management device for elevators, which manages multiple cars, including a first car, as a group, wherein, The elevator group management device includes: When the first car determines to stop at a certain floor in the first direction, the first determination unit determines whether, among the plurality of cars, there are multiple cars that arrive simultaneously before the arrival notification of stopping at the floor in the first direction within a first time period including the expected time when the first car stops at the floor. The second determination unit, when the first determination unit determines that there are no multiple cars arriving at the same time, determines whether, within a second time period including the expected time, there is a possible car that can stop at the floor in the first direction among the multiple cars other than the first car. as well as The adjustment unit, when the second determination unit determines that there is a possible stopping car, delays the start time of the arrival notification when the first car stops at the floor by a third time.

2. The elevator group management device according to claim 1, wherein, When the first determination unit determines that there are multiple cars arriving at the same time, the adjustment unit makes the start time of the arrival notification when the multiple cars arriving at the same time stop at the floor consistent with the start time of the arrival notification of the second car among the multiple cars arriving at the floor.

3. The elevator group management device according to claim 2, wherein, A combination of only a portion of the multiple car cars was pre-defined. If the first determination unit determines that there are multiple cars arriving at the same time and that the multiple cars arriving at the same time are included in the combination, the adjustment unit makes the start time of the arrival notification when the multiple cars arriving at the same time stop at the floor consistent with the start time of the arrival notification of the second arriving car.

4. The elevator group management device according to claim 2 or 3, wherein, The elevator group management device also includes: The determining unit determines differential information for the multiple simultaneously arriving cars for which the start time of the arrival notification is set to be consistent; as well as The control unit is notified that it will send the differential information determined by the determining unit, along with the arrival notifications from the multiple cars that arrive simultaneously and stop at the floor, to the floor. The differential information includes information related to congestion or information related to the specifications of the elevator car.

5. An elevator system, wherein, The elevator system has the following features: Multiple cars, including a first car; and The group management device manages the multiple cars as a group. The group management device includes: When the first car determines to stop at a certain floor in the first direction, the first determination unit determines whether, among the plurality of cars, there are multiple cars that arrive simultaneously before the arrival notification of stopping at the floor in the first direction within a first time period including the expected time when the first car stops at the floor. The second determination unit, when the first determination unit determines that there are no multiple cars arriving at the same time, determines whether, within a second time period including the expected time, there is a possible car that can stop at the floor in the first direction among the multiple cars other than the first car. as well as The adjustment unit, when the second determination unit determines that there is a possible stopping car, delays the start time of the arrival notification when the first car stops at the floor by a third time.

6. The elevator system according to claim 5, wherein, When the first determination unit determines that there are multiple cars arriving at the same time, the adjustment unit makes the start time of the arrival notification when the multiple cars arriving at the same time stop at the floor consistent with the start time of the arrival notification of the second car among the multiple cars arriving at the floor.

7. The elevator system according to claim 6, wherein, A combination of only a portion of the multiple car cars was pre-defined. If the first determination unit determines that there are multiple cars arriving at the same time and that the multiple cars arriving at the same time are included in the combination, the adjustment unit makes the start time of the arrival notification when the multiple cars arriving at the same time stop at the floor consistent with the start time of the arrival notification of the second arriving car.

8. The elevator system according to claim 6 or 7, wherein, The group management device also features: The determining unit determines differential information for the multiple simultaneously arriving cars for which the start time of the arrival notification is set to be consistent; as well as The control unit is notified that it will send the differential information determined by the determining unit, along with the arrival notifications from the multiple cars that arrive simultaneously and stop at the floor, to the floor. The differential information includes information related to congestion or information related to the specifications of the elevator car.

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