Elevator group management method

Abstract

The application discloses an elevator group management method, comprising the following steps: S1, obtaining a call signal of each first passenger, wherein the first passenger refers to an elevator passenger who takes a first floor as a departure floor and a first direction as a direction of taking an elevator; S2, determining a second floor target elevator for responding to a call signal of a second floor waiting passenger, wherein the second floor refers to any floor located in front of the first floor relative to the first direction; S3, determining a car reserved capacity of the second floor target elevator reserved for the second floor waiting passenger; and S4, adjusting the call signal of the first passenger distributed to the second floor target elevator, so that an actual remaining car capacity of the second floor target elevator when reaching the second floor is not less than the car reserved capacity or the remaining car capacity is as close as possible to the car reserved capacity in the case of considering elevator operation efficiency. The elevator group management method disclosed by the application avoids the phenomenon that a non-large passenger flow floor passenger is detained for a long time during a large passenger flow period without wasting elevator capacity.

Description

Technical Field

[0001] This invention relates to an elevator group management method, specifically an elevator group management method that can suppress excessively long passenger waiting times caused by elevators being full. Background Technology

[0002] During morning rush hour, passengers occasionally encounter this scenario in office building lobbies: many people wait for the elevator on the first floor. At this time, two passengers on the third floor need to go up. Because elevators must handle the large passenger flow in the lobby, they are usually assigned to the first floor. This high volume often means the elevator is already full when it leaves the first floor, so even if an elevator is also assigned to the third floor, it often passes through fully booked floors without stopping there, causing passengers on the third floor to be stranded and unable to reach their destination. To address this, some passengers register both their up and down signals on the third floor. When the elevator descends and stops at the third floor, they enter the car and, without leaving the elevator when it stops at the first floor, ride in the opposite direction to reach their destination – a method known as "reverse riding." Clearly, reverse riding affects elevator efficiency and disrupts normal passenger flow, and should be avoided. To eliminate the problem of passengers taking the elevator in reverse or experiencing long wait times on the third floor, existing elevator management systems typically allocate a dedicated elevator to transport passengers waiting on the third floor after a certain waiting time (i.e., the elevator descends from the top, reaches the third floor, and then reverses direction, no longer going to the first floor). While this approach solves the problem of long wait times on the third floor, it can lead to a certain degree of wasted elevator capacity when the number of passengers on the third floor is small.

[0003] Therefore, how to avoid long-term congestion of passengers on floors with low passenger volume during peak hours without wasting elevator capacity has become a technical problem to be solved. Summary of the Invention

[0004] The technical problem to be solved by this invention is how to avoid the phenomenon of passengers staying on floors with low passenger flow for a long time during peak hours without wasting elevator capacity.

[0005] To address the aforementioned technical problems, this invention discloses an elevator group management method, comprising the following steps:

[0006] Step S1: Obtain the elevator call signal of each first passenger. The first passenger refers to the elevator passenger who takes the first floor as the starting floor and the first direction as the elevator direction.

[0007] Step S2: Determine the second floor elevator to respond to the call signal of passengers waiting on the second floor. The second floor is any floor located in front of the first floor relative to the first direction.

[0008] Step S3: Determine the reserved capacity of the elevator car for passengers waiting on the second floor;

[0009] Step S4: By adjusting the call signal of the first passenger assigned to the target elevator on the second floor, the actual remaining car capacity of the target elevator on the second floor when it arrives at the second floor is not less than the reserved car capacity, or the remaining car capacity is as close as possible to the reserved car capacity while taking into account the elevator operating efficiency.

[0010] Preferably, step S4 adjusts the call signal of the first passenger assigned to the second-floor target elevator so that the remaining car capacity of the second-floor target elevator when leaving the first floor is not less than the reserved car capacity, or, while taking into account elevator operating efficiency, the remaining car capacity is as close as possible to the reserved car capacity.

[0011] Preferably, the call signal includes destination floor information. In step S4, the first passenger call signal, whose destination floor is located between the first floor and the second floor, is assigned to the target elevator on the second floor, so that when the target elevator on the second floor arrives at the second floor, the actual remaining car capacity is not less than the reserved car capacity, or the remaining car capacity is as close as possible to the reserved car capacity while taking into account the elevator's operating efficiency.

[0012] Preferably, step S4 further includes: sub-step S4-1, filtering out all intermediate floor call signals from the first passenger's call signals, wherein the intermediate floor call signals are the first passenger's call signals whose destination floor is located between the first floor and the second floor; sub-step S4-2, calculating the required car capacity for all intermediate floor call signals; sub-step S4-3, determining whether the required car capacity for the intermediate floor call signals is less than the car's reserved capacity; if so, proceeding to sub-step S4-5; otherwise, proceeding to sub-step S4-4; sub-step S4-4, selecting the intermediate floor call signals whose required capacity does not exceed the car's reserved capacity. The intermediate floor call signals are assigned to the elevator on the second floor, proceeding to step S4-6; sub-step S4-5: All intermediate floor call signals are assigned to the elevator on the second floor; sub-step S4-6: The difference between the car's reserved capacity and the car's required capacity obtained in sub-step S4-2 is calculated; sub-step S4-7: The first passenger call signal whose required capacity does not exceed the difference obtained in sub-step S4-6 is selected from the non-intermediate floor call signals and assigned to the elevator on the second floor; sub-step S4-8: The remaining unassigned passenger call signals are assigned to the other elevators except the elevator on the second floor, and the process ends.

[0013] Preferably, step S4 further includes: sub-step S4-1, filtering all intermediate floor call signals from the first passenger's call signals, wherein the intermediate floor call signals are the first passenger's call signals whose destination floor is located between the first floor and the second floor; sub-step S4-2, calculating the required car capacity for all intermediate floor call signals; sub-step S4-3, determining whether the required car capacity for the intermediate floor call signals is less than the car's reserved capacity, if so, proceeding to sub-step S4-5, otherwise, proceeding to sub-step S4-4; sub-step S4-4, selecting intermediate floor call signals whose required capacity does not exceed the car's reserved capacity. The floor call signal is assigned to the elevator on the second floor, proceeding to step S4-6; sub-step S4-5: All intermediate floor call signals are assigned to the elevator on the second floor; sub-step S4-6: The difference between the available car capacity and the reserved car capacity of the elevator on the second floor when it is on the first floor is calculated; sub-step S4-7: The first passenger call signal with a required capacity not exceeding the difference obtained in sub-step S4-6 is selected from the non-intermediate floor call signals and assigned to the elevator on the second floor; sub-step S4-8: The remaining unassigned passenger call signals are assigned to the other elevators except the elevator on the second floor, and the process ends.

[0014] Preferably, step S4 further includes: sub-step S4-1, filtering out all intermediate floor call signals from the unassigned first passenger call signals, wherein the intermediate floor call signals are first passenger call signals whose destination floor is between the first floor and the second floor and which have not been assigned; sub-step S4-2, determining whether the sum of the required capacity of all accumulated unassigned intermediate floor call signals reaches the car's reserved capacity, if yes, proceeding to step S4-3, otherwise proceeding to sub-step S4-4; sub-step S4-3, assigning all intermediate floor call signals to the second floor target elevator, assigning the remaining unassigned first passenger call signals to the other elevators besides the second floor target elevator, and returning to sub-step S4-1; sub-step S4-4, using all unassigned non-intermediate floor call signals as call signals to be assigned, and using all elevators as assignable elevators as the target elevators for the call signals to be assigned, and returning to sub-step S4-1.

[0015] Preferably, when the required car capacity of the intermediate floor call signal exceeds the car's reserved capacity, sub-step S4-4 selects the intermediate floor call signal from the intermediate floor call signals that has a required capacity not exceeding the car's reserved capacity and contains the smallest number of different destination floors, and assigns it to the elevator of the second floor target.

[0016] Preferably, the elevator group management method further includes, after step S4, step S5: before the elevator reaches the second floor corresponding to the first passenger waiting for the elevator on the second floor who needs the car to reserve capacity, the destination floor registration function of the destination floor registration device in the car is prohibited.

[0017] Preferably, the elevator group management method further includes the following steps before step S1: step S0, determining whether the applicable conditions are met; if they are met, proceeding to step S1; otherwise, using a conventional group management algorithm to implement group management of the elevator group, and ending the process; the applicable conditions include at least the following: condition 1, the first floor is in a high passenger flow mode with the first direction as the travel direction; condition 2, the second floor has a registered elevator call signal with the first direction as the travel direction.

[0018] Preferably, the applicable conditions also include any of the following conditions: Condition 3, the waiting time of passengers waiting for the elevator on the second floor exceeds the first time threshold; Condition 4, the number of times the elevator on the second floor is fully occupied and passes through the second floor exceeds the first number threshold.

[0019] Preferably, the elevator group management method is adopted when the waiting time of passengers on the second floor exceeds the first time threshold but is less than the second time threshold, or when the number of times the elevator on the second floor passes through the second floor with full capacity exceeds the first number threshold but is less than the second number threshold.

[0020] When the waiting time of passengers on the second floor reaches the second time threshold or the number of times the elevator on the second floor passes through the second floor at full capacity reaches the second number threshold, the elevator group management method described above is adopted.

[0021] Preferably, when the elevator car has remaining capacity and the remaining capacity exceeds a threshold when the elevator car leaves the second floor, step S3 reduces the reserved capacity of the car; when the elevator car is fully loaded when it leaves the second floor or is overloaded during its stop at the second floor, step S3 increases the reserved capacity of the car; except for the above two cases, the reserved capacity of the car remains unchanged.

[0022] Preferably, step S3 sets an initial value for the reserved capacity during the first run.

[0023] Preferably, step S3 discovers the elevator-taking patterns of passengers waiting on the second floor from historical data, the elevator-taking patterns including time and capacity demand; step S3 further determines the initial value of the reserved capacity based on the capacity demand, and implements capacity reservation when the current time is that time, thereby avoiding excessively long waiting times for passengers waiting on the second floor.

[0024] The present invention also provides an elevator group management method, the elevator group management method comprising the following steps:

[0025] Step A1: Obtain the elevator call signal of each first passenger. The first passenger refers to the elevator passenger who takes the first floor as the starting floor and the first direction as the elevator direction.

[0026] Step A2: Determine the second floor elevator to respond to the call signal of passengers waiting on the second floor. The second floor is any floor located in front of the first floor relative to the first direction.

[0027] Step A3: Determine if there is a destination floor closest to the destination floor. If so, assign the first passenger call signal with the destination floor closest to the destination floor to the elevator on the second floor. The destination floor closest to the destination floor refers to the destination floor among all the destination floors of the first passenger call signals whose distance from the second floor is less than a preset threshold.

[0028] Step A4: Use any of the following mixing methods:

[0029] Method 1: Before the elevator on the second floor stops at the second floor, inform the first passenger who is closest to the destination floor to get off the elevator on the second floor, provide guidance information on how to reach the closest destination floor by other means, and control the elevator on the second floor not to stop at the closest destination floor.

[0030] Method 2: Control the elevator on the second floor to stop at the floor closest to the destination instead of the second floor; inform passengers waiting on the second floor that no elevator has been assigned to stop on the second floor, and provide guidance information on how to reach the floor closest to the destination by walking.

[0031] Beneficial technical effects:

[0032] This invention adjusts the call signal of the first passenger assigned to the elevator on the second floor so that the actual remaining car capacity of the elevator on the second floor is not less than the reserved car capacity when it arrives at the second floor. This avoids the phenomenon of passengers staying on floors with low passenger flow for a long time during peak hours without wasting elevator capacity. Attached Figure Description

[0033] Figure 1 These are flowcharts of the elevator group management methods in Examples 1 and 2;

[0034] Figure 2 This is a flowchart of the elevator group management method in Example 3. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0036] Example 1: As Figure 1 As shown, the elevator group management method of this embodiment includes the following steps:

[0037] Step S1: Obtain the elevator call signal of each first passenger. The first passenger refers to the elevator passenger who takes the first floor as the starting floor and the first direction as the elevator direction.

[0038] Step S2: Determine the second floor elevator to respond to the call signal of passengers waiting on the second floor. The second floor is any floor located in front of the first floor relative to the first direction.

[0039] Step S3: Determine the reserved capacity of the elevator car for passengers waiting on the second floor;

[0040] Step S4: By adjusting the call signal of the first passenger assigned to the target elevator on the second floor, the actual remaining car capacity of the target elevator on the second floor when it arrives at the second floor is not less than the reserved car capacity, or the remaining car capacity is as close as possible to the reserved car capacity while taking into account the elevator operating efficiency.

[0041] The elevator group management method in this embodiment requires each passenger to register their elevator call signal, meaning the number of call signals equals the number of passengers. To meet this requirement, a turnstile is installed on the first floor, and the turnstile is communicatively connected to the elevator. Step S1 obtains each passenger's elevator call signal through the turnstile, or through a destination floor registration device installed at the floor station, or through items carried by the passenger that can reflect their identity information or the passenger's biometric information.

[0042] In this embodiment, step S4 adjusts the call signal of the first passenger assigned to the second-floor target elevator so that the remaining car capacity of the second-floor target elevator when leaving the first floor is not less than the reserved car capacity, or, while taking into account elevator operating efficiency, the remaining car capacity is made as close as possible to the reserved car capacity. In this way, the second-floor target elevator can use its remaining car capacity to transport waiting passengers on the second floor in a timely manner, thereby avoiding them from staying on the second floor for a long time.

[0043] For the reserved capacity of the elevator car, step S3 directly assigns an initial value during the first run. The first run here can be the first run after the elevator is powered on each time, or the first run at a fixed time every day, week, etc. (e.g., at 8:00 am on the 1st of each month in an office building, after the property management personnel finish their patrol on the 5th floor equipment floor, they go up to another floor that needs to be patrolled. In this case, it may be necessary to discover the elevator usage patterns based on historical data statistics and artificial intelligence learning - including time and capacity demand, and then determine the initial value of the reserved capacity based on the capacity demand in the elevator usage pattern, and implement capacity reservation when the current time is that time to avoid the property management personnel waiting too long on the 5th floor equipment floor). It can also be the first run after the elevator recognizes a change in passenger flow pattern - at this time, the capacity demand after the floor call occurs due to non-large passenger flow is estimated based on the passenger flow pattern, and the reserved capacity is determined based on the estimation result.

[0044] Then, based on the existing initial value of the reserved capacity, adjustments will be made as follows:

[0045] When the elevator leaves the second floor, if there is remaining car capacity in the elevator car and the remaining car capacity exceeds the threshold, step S3 reduces the reserved car capacity.

[0046] When the elevator is fully loaded when leaving the second floor or when it is overloaded while stopping at the second floor, step S3 increases the car's reserved carrying capacity.

[0047] Except for the two situations mentioned above, the reserved carrying capacity of the elevator car remains unchanged.

[0048] The elevator group management method further includes the following after step S4:

[0049] Step S5: Before the elevator reaches the second floor corresponding to the first passenger waiting in the second floor who needs the car to reserve capacity, disable the destination floor registration function of the destination floor registration device in the car.

[0050] The purpose of step S5 is to prevent some passengers from using the second-floor elevator instead of the assigned elevator due to its relative vacancy, thus causing insufficient remaining car capacity when the second-floor elevator arrives at the second floor. By disabling the destination floor registration function of the device inside the elevator car, other passengers are prevented from reaching their destination floor by using the second-floor elevator, thereby causing these passengers to abandon the alternative and ultimately ensuring sufficient remaining car capacity when the second-floor elevator arrives at the second floor. Therefore, step S5 achieves a significant technical effect, ensuring that the solution of this invention can solve its technical problem.

[0051] In practice, the system automatically registers the destination floor signal of the call signal for the designated elevator on the second floor for passengers waiting on the second floor, and illuminates the corresponding destination floor button on the registration device inside the elevator car. When a passenger attempting to change elevators attempts to register their destination floor, the system not only prohibits registration but also informs the passenger that "This elevator is not your designated elevator; please take the elevator according to the assigned result." This notification can be displayed as text on a screen, announced via voice, or sent to the passenger's personal mobile device.

[0052] Preferably, the elevator group management method further includes the following steps before step S1:

[0053] Step S0: Determine if the applicable conditions are met. If they are met, proceed to step S1; otherwise, implement group management for the elevator group using a conventional group management algorithm, and end the process. The applicable conditions include at least the following:

[0054] Condition 1: The first floor is in a high-traffic mode with the first direction as the travel direction;

[0055] Condition 2: There is a call signal registered on the second floor with the first direction as the travel direction.

[0056] Example 2: This example further explains step S4 based on Example 1.

[0057] The elevator call signal includes destination floor information. In step S4, the first passenger elevator call signal, whose destination floor is located between the first floor and the second floor, is assigned to the target elevator on the second floor, so that when the target elevator on the second floor arrives at the second floor, the actual remaining car capacity is not less than the reserved car capacity, or the remaining car capacity is as close as possible to the reserved car capacity while taking into account the elevator operating efficiency.

[0058] Method 1, step S4 further includes:

[0059] Sub-step S4-1: Filter out all intermediate floor elevator call signals from the first passenger's elevator call signals, wherein the intermediate floor elevator call signals are the elevator call signals of the first passenger whose destination floor is located between the first floor and the second floor;

[0060] Sub-step S4-2: Calculate the required car capacity for all intermediate floor call signals;

[0061] Sub-step S4-3: Determine whether the car's required carrying capacity for the intermediate floor call signal is less than the car's reserved carrying capacity. If yes, proceed to sub-step S4-5; otherwise, proceed to sub-step S4-4.

[0062] Sub-step S4-4: Assign the intermediate floor call signal corresponding to the required carrying capacity not exceeding the reserved carrying capacity of the car to the elevator on the second floor, and proceed to step S4-6;

[0063] Sub-step S4-5: Distribute all intermediate floor call signals to the elevator on the second floor.

[0064] Sub-step S4-6: Calculate the difference between the car's reserved carrying capacity and the car's required carrying capacity obtained in sub-step S4-2;

[0065] Sub-step S4-7: Select the first passenger call signal from the non-intermediate floor call signals whose required capacity does not exceed the difference obtained in sub-step S4-6 and assign it to the elevator on the second floor.

[0066] Sub-step S4-8: Assign the remaining unassigned passenger call signals to the remaining elevators except for the elevator on the second floor, and then end.

[0067] Method 2: Replace steps S4-6 in Method 1 with calculating the difference between the available car capacity and the reserved car capacity when the elevator of the second floor object is located on the first floor.

[0068] Method 3, step S4 further includes:

[0069] Sub-step S4-1: Filter out all intermediate floor elevator call signals from the unassigned first passenger's elevator call signals. The intermediate floor elevator call signals are the first passenger's elevator call signals whose destination floor is between the first floor and the second floor and which have not been assigned.

[0070] Sub-step S4-2: Determine whether the sum of the required capacity of all accumulated unallocated intermediate floor call signals reaches the car's reserved capacity. If yes, proceed to step S4-3; otherwise, proceed to sub-step S4-4.

[0071] Sub-step S4-3: Assign all intermediate floor call signals to the elevator on the second floor, assign the remaining unassigned call signals of the first passengers to the other elevators except the elevator on the second floor, and return to sub-step S4-1.

[0072] Sub-step S4-4: Take all unassigned non-intermediate floor call signals as call signals to be assigned, and take all elevators as assignable elevators as the elevators to be assigned call signals, then return to sub-step S4-1.

[0073] Corresponding to the specific methods of the three steps S4 mentioned above, when the car's required carrying capacity for the intermediate floor call signal exceeds the car's reserved carrying capacity, the sub-step S4-4 selects the intermediate floor call signal from the intermediate floor call signals that has the required carrying capacity not exceeding the car's reserved carrying capacity and contains the smallest number of different destination floors, and assigns it to the elevator of the second floor target.

[0074] Preferably, the applicable conditions further include any of the following conditions:

[0075] Condition 3: The waiting time of passengers waiting for the elevator on the second floor exceeds the first time threshold;

[0076] Condition 4: The number of times the elevator to the second floor is fully occupied exceeds the threshold for the first time.

[0077] When the waiting time of passengers on the second floor exceeds the first time threshold but is less than the second time threshold, or when the number of times the elevator on the second floor passes through the second floor with full capacity exceeds the first threshold but is less than the second threshold, step S4 adopts the specific method as described in Method 1 or Method 3 above.

[0078] When the waiting time of passengers on the second floor reaches the second time threshold or the number of times the elevator on the second floor is fully occupied reaches the second number threshold, step S4 adopts the specific method of Method 2 described above.

[0079] Example 3: As Figure 2As shown, the main difference between this embodiment and the previous embodiment is that, firstly, the target floor of all existing first-floor call signals is determined, and then the call signal that is closest to the target floor and the second floor is selected. It is then determined whether the distance between the closest target floor and the second floor is less than a threshold. If the determination result is yes, the closest call signal is assigned to an elevator and designated as the elevator for the second floor.

[0080] More specifically, the elevator group management method provided in this embodiment includes the following steps:

[0081] Step A1: Obtain the elevator call signal of each first passenger. The first passenger refers to the elevator passenger who takes the first floor as the starting floor and the first direction as the elevator direction.

[0082] Step A2: Determine the second floor elevator to respond to the call signal of passengers waiting on the second floor. The second floor is any floor located in front of the first floor relative to the first direction.

[0083] Step A3: Determine if there is a destination floor closest to the destination floor. If so, assign the first passenger call signal with the destination floor closest to the destination floor to the elevator on the second floor. The destination floor closest to the destination floor refers to the destination floor among all the destination floors of the first passenger call signals whose distance from the second floor is less than a preset threshold.

[0084] Since the nearest destination floor is different from the second floor, in order for the elevator on the second floor to respond to the call signal on the second floor, the nearest destination floor and the second floor need to be unified. For this step A4, use any of the following allocation methods:

[0085] Method 1: Before the elevator on the second floor stops at the second floor, inform the first passenger who is closest to the destination floor to get off the elevator on the second floor, provide guidance information on how to reach the closest destination floor by other means, and control the elevator on the second floor not to stop at the closest destination floor.

[0086] Method 2: Control the elevator on the second floor to stop at the floor closest to the destination instead of the second floor; inform passengers waiting on the second floor that no elevator has been assigned to stop on the second floor, and provide guidance information on how to reach the floor closest to the destination by walking.

[0087] Whether using method 1 or method 2, the advantage is that the elevator reduces the number of stops and improves the overall operating efficiency of the elevator. However, at the same time, passengers need to climb stairs (in the car or waiting on the second floor).

[0088] Method 1 requires passengers in the elevator car to reach their destination floor by other means, such as walking up the stairs. The advantage of requiring passengers in the elevator car to climb stairs is that it only requires that the distance between the nearest destination floor and the second floor is less than a threshold, and that appropriate notification be given in the elevator car before the nearest elevator car reaches the second floor.

[0089] Method 2 requires passengers waiting on the second floor to reach their destination using other means, such as walking up the stairs. When requiring passengers on the second floor to climb stairs, in addition to ensuring the distance between the nearest destination floor and the second floor is less than a threshold, the time required for passengers on the second floor to climb the stairs to reach the nearest destination floor must also be considered. If the time spent climbing stairs is longer than the time required for the nearest elevator to reach the second floor, this method is not applicable. To solve this problem, firstly, compare the travel time of the target elevator on the second floor from the first floor to the second floor with the time spent climbing the stairs. If the travel time is longer than the time spent climbing the stairs, passengers can be informed after the nearest elevator has left. If the travel time is shorter than the time spent climbing the stairs, passengers on the second floor must be informed before the target elevator on the second floor leaves the first floor. To extend the time before the elevator for the second floor departs from the first floor, after determining the nearest floor, the call signal for the first floor corresponding to the nearest floor can be assigned to an elevator that arrives at the first floor later and designated as the elevator for the second floor. Passengers waiting on the second floor should be notified immediately after determining the nearest floor, thus ensuring that passengers waiting on the second floor have enough time to walk to the nearest floor.

Claims

1. An elevator group management method characterized by comprising: The elevator group management method comprises the following steps: Step S1, obtaining a first passenger's call signal, the first passenger being an elevator passenger who takes the elevator from a first floor and in a first direction; Step S2, determining a second floor target elevator for responding to a second floor passenger's call signal, the second floor being any floor located in front of the first floor relative to the first direction; Step S3, determining a car reserved capacity of the second floor target elevator reserved for the second floor passenger; Step S4, adjusting the first passenger's call signal assigned to the second floor target elevator so that the actual remaining car capacity of the second floor target elevator when it arrives at the second floor is not less than the car reserved capacity or, in consideration of the elevator operation efficiency, the remaining car capacity is as close as possible to the car reserved capacity.

2. The elevator group management method according to claim 1, characterized by, The step S4 adjusts the first passenger's call signal assigned to the second floor target elevator so that the remaining car capacity of the second floor target elevator when it departs from the first floor is not less than the car reserved capacity or, in consideration of the elevator operation efficiency, the remaining car capacity is as close as possible to the car reserved capacity.

3. The elevator group management method according to claim 2, characterized by, The call signal contains destination floor information, and the step S4 assigns the first passenger's call signal whose destination floor is between the first floor and the second floor to the second floor target elevator so that the actual remaining car capacity of the second floor target elevator when it arrives at the second floor is not less than the car reserved capacity or, in consideration of the elevator operation efficiency, the remaining car capacity is as close as possible to the car reserved capacity.

4. The elevator group management method according to claim 3, characterized by The step S4 further comprises: Sub-step S4-1, screening all intermediate floor call signals from the first passenger's call signal, the intermediate floor call signal being the first passenger's call signal whose destination floor is between the first floor and the second floor; Sub-step S4-2, calculating the required car capacity required by all intermediate floor call signals; Sub-step S4-3, judging whether the required car capacity required by the intermediate floor call signal is less than the car reserved capacity, if yes, turning to sub-step S4-5, otherwise, turning to sub-step S4-4; Sub-step S4-4, assigning the intermediate floor call signal corresponding to the required capacity not exceeding the car reserved capacity to the second floor target elevator, and turning to step S4-6; Sub-step S4-5, assigning all intermediate floor call signals to the second floor target elevator; Sub-step S4-6, calculating the difference between the car reserved capacity and the required car capacity obtained in sub-step S4-2; Sub-step S4-7, selecting the first passenger's call signal corresponding to the required capacity not exceeding the difference obtained in sub-step S4-6 from the non-intermediate floor call signal and assigning it to the second floor target elevator; Sub-step S4-8, assigning the remaining unassigned passenger's call signal to the remaining elevators except the second floor target elevator, and ending.

5. The elevator group management method according to claim 3, characterized by, The step S4 further comprises: Sub-step S4-1, screening all intermediate floor call signals from the first passenger's call signals, the intermediate floor call signals being the first passenger's call signals whose destination floors are between the first floor and the second floor; Sub-step S4-2, calculating the required car capacity of all intermediate floor call signals; Sub-step S4-3, judging whether the required car capacity of the intermediate floor call signals is less than the car reserved capacity, if yes, entering sub-step S4-5, otherwise, entering sub-step S4-4; Sub-step S4-4, assigning the intermediate floor call signals corresponding to the required car capacity not exceeding the car reserved capacity to the second floor target elevator, and entering step S4-6; Sub-step S4-5, assigning all intermediate floor call signals to the second floor target elevator; Sub-step S4-6, calculating the difference between the available car capacity of the second floor target elevator at the first floor and the car reserved capacity; Sub-step S4-7, selecting the first passenger's call signals corresponding to the required car capacity not exceeding the difference obtained in sub-step S4-6 from the non-intermediate floor call signals and assigning them to the second floor target elevator; Sub-step S4-8, assigning the remaining unassigned passenger's call signals to the remaining elevators except the second floor target elevator, and ending.

6. The elevator group management method according to claim 3, characterized by The step S4 further comprises: Sub-step S4-1, screening all intermediate floor call signals from the unassigned first passenger's call signals, the intermediate floor call signals being the unassigned first passenger's call signals whose destination floors are between the first floor and the second floor; Sub-step S4-2, judging whether the sum of the required car capacities of all accumulated unassigned intermediate floor call signals reaches the car reserved capacity, if yes, entering step S4-3, otherwise, entering sub-step S4-4; Sub-step S4-3, assigning all intermediate floor call signals to the second floor target elevator, assigning the remaining unassigned first passenger's call signals to the remaining elevators except the second floor target elevator, and returning to sub-step S4-1; Sub-step S4-4, taking all unassigned non-intermediate floor call signals as the call signals to be assigned, taking all elevators as the assignable elevators as the target elevators of the call signals to be assigned, and returning to sub-step S4-1.

7. The elevator group management method according to claim 4 or 5 or 6, characterized by, When the required car capacity of the intermediate floor call signals exceeds the car reserved capacity, the sub-step S4-4 selects the intermediate floor call signals having the required car capacity not exceeding the car reserved capacity and containing the least number of different destination floors from the intermediate floor call signals and assigns them to the second floor target elevator.

8. The elevator group management method according to claim 1, characterized by, The elevator group management method further comprises, after the step S4: Step S5, disabling the destination floor registration function of the destination floor registration device in the car before the elevator reaches the first second floor corresponding to the second floor waiting passenger requiring the car reserved capacity.

9. The elevator group management method according to claim 1, characterized by, The elevator group management method further comprises, before the step S1: Step S0, judging whether the applicable condition is satisfied, if yes, entering step S1, otherwise, using the conventional group management algorithm to implement group management on the elevator group, and ending; the applicable condition at least comprises: Condition 1: the first floor is in a heavy passenger flow pattern with the first direction as the travel direction; Condition 2: the second floor has registered a call signal with the first direction as the travel direction.

10. The elevator group management method according to claim 9, characterized by The applicable conditions further include any of the following conditions: Condition 3: the waiting time of the second floor waiting passenger exceeds a first time threshold; Condition 4: the number of times the second floor target elevator is full when passing the second floor exceeds a first number threshold.

11. The elevator group management method of claim 1, wherein, when the waiting time of the second floor waiting passenger exceeds a first time threshold and is less than a second time threshold or the number of times the second floor target elevator is full when passing the second floor exceeds a first number threshold and is less than a second number threshold, the elevator group management method of claim 4 or 6 is adopted; when the waiting time of the second floor waiting passenger reaches the second time threshold or the number of times the second floor target elevator is full when passing the second floor reaches the second number threshold, the elevator group management method of claim 5 is adopted.

12. The elevator group management method of claim 1, wherein, when there is remaining car capacity when the second floor target elevator leaves the second floor and the remaining car capacity exceeds a threshold, the step S3 reduces the car reserved capacity; when the second floor target elevator is full when leaving the second floor or is overloaded when stopping at the second floor, the step S3 increases the car reserved capacity; otherwise, the car reserved capacity remains unchanged.

13. The elevator group management method according to claim 1, characterized by, The step S3 sets an initial value for the reserved capacity when first running.

14. The elevator group management method of claim 1, wherein, the step S3 discovers the boarding pattern of the second floor waiting passenger from historical data, the boarding pattern including time and capacity demand; the step S3 further determines the initial value of the reserved capacity according to the capacity demand, and implements capacity reservation at the current time, thereby avoiding long waiting time of the second floor waiting passenger.

15. An elevator group management method characterized by comprising: The elevator group management method includes the following steps: Step A1: obtaining the call signal of each first passenger, the first passenger being an elevator passenger with the first floor as the departure floor and the first direction as the boarding direction; Step A2: determining the second floor target elevator for responding to the call signal of the second floor waiting passenger, the second floor being any floor located in front of the first floor relative to the first direction; Step A3: determining whether there is a closest destination floor, and if so, assigning the call signal of the first passenger with the closest destination floor to the second floor target elevator; the closest destination floor being the destination floor of all first passenger call signals with a distance to the second floor less than a preset threshold; Step A4: adopting any of the following allocation methods: Mode 1, control the second floor object elevator to stop at the second floor before the second floor, inform the destination layer as the first passenger closest to the destination layer, get off the elevator at the second floor, provide guidance information to reach the closest destination layer by other means, and control the second floor object elevator not to stop at the closest destination layer; Mode 2, control the second floor object elevator not to stop at the second floor, and stop at the closest destination layer; Inform the second floor waiting passengers that there is no elevator assigned to stop at the second floor, and provide guidance information to reach the closest destination layer by walking.

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