CN115057309A

CN115057309A - Elevator group management method and system

Info

Publication number: CN115057309A
Application number: CN202210857337.9A
Authority: CN
Inventors: 何成; 陈玉东
Original assignee: Shanghai Mitsubishi Elevator Co Ltd
Current assignee: Shanghai Mitsubishi Elevator Co Ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2022-09-16

Abstract

The invention discloses an elevator group management method, which allocates an unallocated elevator taking request for an earliest returning elevator, so that the time interval between the returning moment when the earliest returning elevator returns to a main landing again after passenger transportation is finished and the returning moment of an adjacent elevator which returns to the main landing is not less than a time threshold, or the horizontal distance between the position of the earliest returning elevator at the main landing and the position of the adjacent elevator at the main landing is not less than a distance threshold; the earliest return elevator refers to an elevator which returns to the main landing earliest. The invention aims to solve the technical problem of how to effectively avoid passengers from taking non-target elevators by mistake and effectively reduce the calculation load of an elevator group management system in the peak period of elevator utilization.

Description

Elevator group management method and system

Technical Field

The invention relates to the field of elevators, in particular to an elevator group management method and system.

Background

In a large-traffic floor such as a main landing, there are passengers going to respective floors in different directions at the same time during a peak period, and if the arrival time or distance of an elevator to go to these different destination floors is allocated to be too close, there is a possibility that the passengers may take a non-destination elevator by mistake, which may cause a reduction in the experience of taking the elevator by the passengers and a reduction in the operation efficiency of the elevator.

Therefore, how to effectively avoid passengers from taking the non-target elevator by mistake becomes a technical problem to be solved.

Disclosure of Invention

The invention aims to solve the technical problem of how to effectively avoid passengers from taking non-target elevators by mistake and effectively reduce the calculation load of an elevator group management system in the peak period of elevator utilization.

In order to solve the technical problem, the invention provides an elevator group management method, which allocates an unallocated elevator taking request for an earliest returning elevator, so that the time interval between the returning moment when the earliest returning elevator returns to a main landing again after passenger transportation is completed and the returning moment of an adjacent elevator which is adjacent to the main landing is not less than a time threshold value, or the horizontal distance between the position of the earliest returning elevator at the main landing and the position of the adjacent elevator at the main landing is not less than a distance threshold value; the earliest return elevator refers to an elevator which returns to the main landing earliest.

Preferably, the earliest return elevator satisfies the following condition: a first condition is that an elevator taking request with a main landing as a starting floor is allocated; secondly, the elevator arrives at the main landing again after the elevator taking request is completed; the third condition is that the running direction when the elevator arrives at the main landing again is consistent with the running direction when the elevator departs from the main landing after receiving the distributed elevator taking request; in the fourth condition, the arrival time is the earliest in all elevators that arrive at the main landing again.

Preferably, the elevator group management method estimates the returning time of each elevator to the main landing according to the elevator running information, and determines the earliest returning elevator according to the returning time.

Preferably, the elevator group management method estimates the return time of each elevator when returning to the main landing according to the first time, the second time and the third time; the first time refers to the time required by the elevator to start from the main floor station, run to the farthest target floor at the rated speed and return to the main floor station is calculated according to the distance between the farthest target floor and the main floor station and the rated running speed of the elevator; the second time refers to the extra increased moving time caused by all stops of the elevator calculated according to the number of the allocated target floors; and the third time is the time consumed by estimating the passengers to get off the elevator according to the number of the passengers corresponding to the distributed destination floors.

Preferably, the elevator group management method determines a return order of the earliest returning elevator with respect to the other elevators when returning to the primary landing again after completion of its passenger transportation, according to at least one of preset factors; wherein, the return sequence refers to the sequence when the current passenger conveying is completed and returned to the main landing relative to other elevators, or the sequence when the current passenger conveying is completed and returned to the main landing relative to other elevators, and the conveying is completed and returned again after the elevator taking request currently allocated to the elevator enters the elevator car; the preset factors comprise the number of waiting passengers, the waiting time of the passengers, the running efficiency of the elevator and the electric energy consumption of the elevator.

Preferably, the group management method determines the return order of the earliest returning elevator relative to the other elevators when returning to the main landing again after completion of the transportation of its passengers among all the returning elevators, based on the return timing of each elevator, while determining the adjacent elevator that returned to the main landing earliest.

Preferably, the elevator group management method adjusts the return moment of the earliest returning elevator by adjusting the not-yet-allocated ride request allocated to the earliest returning elevator.

Preferably, the step of adjusting the unallocated elevator taking requests allocated to the earliest returning elevator is performed by adjusting the number of unallocated elevator taking requests allocated to the earliest returning elevator and the position of a destination floor in an elevator taking request at a main landing, or adjusting the number of unallocated elevator taking requests allocated to the earliest returning elevator and the vertical distance between the destination floor farthest from the main landing and the main landing in the elevator taking request.

Preferably, the elevator group management method changes the adjacent elevator of the earliest returning elevator by adjusting the returning moment of the earliest returning elevator to adjust the returning order of the earliest returning elevator relative to other elevators when the earliest returning elevator returns to the main landing again after the completion of the transportation of its passengers.

Preferably, the elevator group management method adjusts the time interval between the return moments of the earliest returning elevator and the adjacent elevator by adjusting the return moment of the earliest returning elevator.

Preferably, the elevator group management method adjusts the horizontal distance between the position of the earliest returning elevator at the main landing and the position of its neighboring elevator at the main landing by adjusting the neighboring elevator of the earliest returning elevator.

Preferably, the time interval is not shorter than a time required for a passenger to move from the boarding waiting area to an elevator farthest from the boarding waiting area or to the earliest return elevator.

Preferably, the elevator group management method determines the elevator taking request allocation plan according to the following steps:

a step S1, forming an elevator taking request distribution scheme facing the earliest return elevator by selecting at least one elevator taking request in all the elevator taking requests which are not distributed, wherein the resources required by the elevator taking requests in the distribution scheme do not exceed the available resources of the earliest return elevator;

step S2, estimating the car moving time required by the earliest returning elevator starting from the main landing to the return value main landing after finishing passenger transportation under each allocation scheme;

a step S3, determining the adjacent elevator of the earliest returning elevator and the time interval between the elevator and the adjacent elevator according to the car moving time estimated in the step S2;

step S4, selecting an allocation scheme corresponding to a time interval meeting a preset condition from all allocation schemes as a candidate allocation scheme, wherein the preset condition is that the time interval is not shorter than the time of a passenger moving from an elevator waiting area to an elevator farthest away from the elevator waiting area or the time required for moving to the earliest returning elevator;

step S5, selecting one of the candidate allocation plans as a final allocation plan for the elevator boarding request of the earliest returning elevator.

Preferably, the step S5 selects a final allocation plan as the elevator taking request for the earliest returning elevator according to at least one of preset principles; the preset principle comprises the following steps: the elevator control method based on the time interval optimization principle is characterized by comprising the following steps of optimizing the time interval principle, shortening the waiting time of passengers, improving the operation efficiency of the elevator and reducing the power consumption of the elevator.

Preferably, the time interval optimization principle refers to the time interval maximum or closest to the passenger moving time required by the passenger to move from the waiting area to the earliest returning elevator.

Preferably, when multiple preset principles are adopted simultaneously, the evaluation indexes under each preset principle are respectively established for a certain to-be-selected distribution scheme, the weighted sum of the evaluation indexes under each preset principle is used as the total index of the to-be-selected distribution scheme, and the final distribution scheme is selected according to the total index of each to-be-selected distribution scheme.

Preferably, the evaluation index of the time interval optimization principle is a difference value between the time interval and the passenger moving time required by the passenger to move from the elevator waiting area to the elevator farthest away from the elevator waiting area or to move to the elevator returning earliest, or a ratio of the difference value to the passenger moving time.

a step S1, forming an elevator taking request distribution scheme facing the earliest return elevator by selecting at least one elevator taking request from all the elevator taking requests which are not distributed, wherein the resources required by the elevator taking requests in the distribution scheme do not exceed the available resources of the earliest return elevator;

a step S3 of determining the adjacent elevator of the earliest returning elevator according to the car moving time estimated in the step S2;

step S4, determining the horizontal distance between the adjacent elevator and the main landing according to the position of the adjacent elevator at the main landing and the position of the earliest returning elevator at the main landing determined in the step S3;

step S5, selecting the distribution scheme of which the horizontal distance is not less than the distance threshold value from all the distribution schemes as a distribution scheme to be selected;

step S6, selecting one of the candidate allocation plans as a final allocation plan for the elevator taking request of the earliest returning elevator.

Preferably, the step S6 selects a final allocation plan as the elevator taking request for the earliest returning elevator according to at least one of preset principles; the preset principle comprises the following steps: the elevator control method based on the distance optimization principle is characterized by comprising the following steps of optimizing the distance principle, shortening the waiting time of passengers, improving the operation efficiency of the elevator and reducing the power consumption of the elevator.

Preferably, the distance optimization criterion refers to whether the horizontal distance is at a maximum or closest to a distance threshold.

Preferably, the evaluation index of the distance optimization principle is the difference between the horizontal distance and the maximum horizontal distance between all elevators or the ratio of the difference to the maximum horizontal distance.

Preferably, the elevator group management method monitors the return timing of each elevator, and takes a timing at which the car moving time of the earliest returning elevator is longer than the time threshold as a timing at which an elevator taking request is assigned to the earliest returning elevator.

Compared with the prior art, the elevator early arrival method and the elevator early arrival device have the advantages that the elevator early arrival is taken as the main line, reasonable selection is carried out on existing unallocated elevator taking request signals aiming at the elevator early arrival, and the selected elevator taking request signals are allocated to the elevator early arrival. In the allocation mode of the above technical solution of the present application, the selection range is all currently unassigned elevator taking request signals, the selected object is the selected elevator taking request signal, and the allocation target is the earliest arriving elevator, which is completely different from the mechanism in the prior art. In the elevator-using peak period, the number of elevator taking request signals in unit time is far higher than the number of elevators arriving at the main elevator landing, so the group management method can effectively reduce the calculation load of the elevator group management system. In addition, due to the expansion of the selection range in the distribution process, the number of formed distribution schemes is greatly increased, so that the final distribution scheme is more reasonable, and the running efficiency of the elevator is higher.

In addition, the time interval of each elevator reaching the main landing and/or the distance between the adjacent elevators reaching the main landing are ensured by reasonably selecting the unallocated elevator riding request signals, so that the passengers who ride different elevators are separated, and the passengers are prevented from riding in non-target elevators.

The invention also provides an elevator group management system which can determine the reasonable moment of starting allocation of elevator group management.

The present invention provides an elevator group management system, including:

a destination floor information receiving unit for receiving a passenger's elevator taking request, the elevator taking request at least including destination floor information registered by the passenger;

the elevator operation information acquisition unit is used for acquiring elevator operation information;

the estimating unit is used for estimating the car moving time required by returning each elevator to the main landing according to the elevator running information;

a determining unit, configured to determine, according to the car movement time output by the estimating unit, an earliest returning elevator that returns to a main landing earliest in the elevators, where a maximum value of the car movement time of the earliest returning elevator is not less than a time threshold;

a selection unit for selecting an allocation moment, which is a moment for starting allocation of an unallocated elevator taking request to the earliest returning elevator;

an allocation unit for allocating, at the allocation moment, an elevator taking request that has not been allocated to the earliest returning elevator;

and the informing unit is used for informing the passenger of the distribution result.

Preferably, the time threshold is a passenger moving time required for a passenger to move from the boarding waiting area to an elevator farthest from the boarding waiting area or to the earliest returning elevator.

Preferably, the allocation unit allocates an unallocated elevator boarding request to the earliest returning elevator by using any of the aforementioned elevator group management methods.

Preferably, the selection unit monitors the return timing of each elevator, and takes a timing at which the car moving time of the earliest returning elevator is longer than the time threshold as a timing at which an elevator boarding request is assigned to the earliest returning elevator.

Compared with the prior art, the elevator group management system of the invention fully utilizes the characteristic that the elevator group management takes the elevator arriving at the main landing as a main line, and directly utilizes the car moving time of the earliest arriving elevator and the passenger moving time required by the passengers to move to the elevator from the waiting area to directly provide the method for determining the optimal moment for starting allocation.

Drawings

Fig. 1 is a schematic diagram of an elevator system in a building.

Detailed Description

Other advantages and effects of the present invention will become readily apparent to those skilled in the art from the following detailed description, wherein it is shown in the accompanying drawings, wherein the specific embodiments are by way of illustration. In the following description, specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced or utilized in other different embodiments, and the details may be based on different perspectives and applications, and may be subject to various similar generalizations and substitutions by one skilled in the art without departing from the spirit of the present invention.

Example one

The embodiment mainly aims at the following defects of the existing elevator group management system:

1) that is, the elevator taking request is used as a main line, every time a new elevator taking request signal is received, the elevator taking request signal is responded by properly selecting the target elevator from all elevators in the group management system, namely, the calculation load of the elevator taking request signal in a specific occasion such as an elevator peak is overlarge by using all elevators in the group management system as a selection range, the selected target elevator as a selected object and the elevator taking request signal (namely, passengers) as an allocation target, and the mode is that the number of the elevator taking request signals in a unit time is greatly increased and is far more than the number of the elevators reaching a main landing in the unit time at the moment);

2) the process from the passenger registering his/her elevator taking request signal to the passenger actually entering the elevator car is often long, the elevator group management system responds to the elevator based on the elevator operation information allocation when the passenger registers his/her elevator taking request signal, and the elevator is no longer the best response elevator or even the poor choice when the passenger enters the car because the elevator operation information may have changed greatly, thus resulting in the deterioration of elevator operation efficiency, passenger taking experience, etc. even if the elevator allocation is performed after a certain time delay after receiving the elevator taking request signal registered by the passenger, although the defect can be alleviated to some extent, the defect 1) is not helped.

In view of the disadvantages of the prior art, the elevator group management system provided by the present embodiment includes:

As shown in fig. 1, assume a 30-story office building, in which the main floor is floor 1 at the bottom, and the destination floor registration device is provided at the main floor. The office building is provided with 6 elevators with rated passenger carrying capacity of 18, which are respectively positioned at two sides of the long edge of the rectangular elevator waiting hall, the target floor registration device is a rolling mill positioned at the entrance of the building, the elevator waiting area of passengers is positioned between the rolling mill and the elevator and close to the elevator, and the elevator waiting area is a short edge area of the rectangular elevator waiting hall close to one side of the rolling mill.

The operation of the elevator group management system of the present embodiment will be described below by taking this scenario as an example.

Assume that in the morning 8: at the moment k of the peak using time when the elevator is finished at 9:10, the elevator A ascends to the floor 5 and has a floor to be stopped in the front, the elevator B ascends to the floor 18 and has a floor to be stopped in the front, the elevator C ascends to the floor 28 and has no floor to be stopped in the front and reversely returns to the floor 1 at the floor 29, the elevator D descends to the floor 25 and has no floor to be stopped in the front except the floor 1, the elevator E descends to the floor 20 and has no floor to be stopped in the front except the floor 1, and the elevator F descends to the floor 10 and has no floor to be stopped in the front except the floor 1.

An elevator operation information acquisition unit of the group management system acquires operation information of the elevators, such as the positions, the operation directions, the information of floors to be stopped and the like of the elevators; the destination floor information receiving unit receives destination floor information registered by passengers through the rolling mill; estimating the movement time of the elevator required by returning each elevator to the main landing according to the current position, the running direction information, the floor to be stopped and other information of each elevator in the elevator running information, wherein the movement time of the elevator is estimated to be 10, for example, 50 seconds are required for the A elevator, 35 seconds are required for the B elevator, 20 seconds are required for the C elevator, 17 seconds are required for the D elevator, 12 seconds are required for the E elevator and 10 are required for the F elevator; the determination means selects the earliest returning elevator from the elevators to return to the main landing earliest on the basis of the estimation result of the estimation means and the setting value. Note that, here, in selecting the earliest returning elevator, the selected earliest returning elevator should be the elevator that requires the shortest time to return to the main landing among all elevators requiring a time longer than the set value to return to the main landing. Assuming that the set value is 10 seconds, the earliest returning elevator selected by the earliest returning elevator determining unit is an F elevator. The set value (i.e., the time threshold) may be a constant value, such as the maximum value of the passenger moving time required for the passenger to move from the waiting area to an elevator (actually, the passenger moving time required for the passenger to move to an elevator (here, a C elevator or an F elevator) farthest from the moving area), or the passenger moving time required for the passenger to move from the waiting area to the earliest arrival at the elevator location.

When the set value is the passenger moving time when the passenger moves from the waiting area to the position where the elevator arrives earliest, because the elevator arriving earliest is not determined at the moment, a trial method is needed, namely, the elevator is arranged from short to long according to the time required by the elevator to return to the main landing, whether the returning time of the elevator is longer than the passenger moving time required by the passenger to move from the waiting area to the elevator is judged from the elevator with the shortest time, if so, the elevator is taken as the earliest returning elevator, otherwise, the elevator with the shortest time which is not selected is returned again.

In fact, the following method may also be employed: according to the estimation result of the estimation unit, firstly, the car moving time of each elevator is compared with the passenger moving time corresponding to the elevator (namely the passenger moving time when the passenger moves from the waiting area to the elevator), then a candidate elevator list consisting of the elevators with the car moving time being long with the passenger moving time corresponding to the elevator is established, and finally the elevator corresponding to the shortest car moving time is selected from the list as the earliest returning elevator.

The selected cell selects the dispensing time. If the passenger movement times required for the passengers to move from the waiting area to the elevators a to F, respectively, are 6 seconds, 8 seconds, 10 seconds, 6 seconds, 8 seconds, and 10 seconds, respectively, the selection unit should select as the allocation time the time at which the car movement time of the elevator is not later than a fixed set value (10 seconds as described above) or the time at which the car movement time is not later than 6 seconds, 8 seconds, 10 seconds, 6 seconds, 8 seconds, and 10 seconds, respectively, for the elevators a to F. Here a time corresponding to 10 seconds.

An allocation unit allocates the boarding request that has not been allocated to the earliest return elevator at the allocation timing; and the informing unit is used for informing the passenger of the distribution result.

The selection unit monitors the return time of each elevator and takes the time at which the car movement time of the earliest return elevator is longer than the time threshold as the time at which the elevator taking request is assigned to the earliest return elevator.

When the earliest return elevator is selected, the assignment means assigns an elevator-taking request signal to the elevator, and at this time, the estimation means estimates the return time of the elevator (i.e., the time required for the elevator to reach the main landing, for passengers to enter the car, for the elevator to carry passengers, and then to return to the main landing again) after the completion of the assigned elevator-taking request, and updates and reorders the previous results by the estimation results. In such a processing procedure, as long as the estimation, update, earliest elevator selection and allocation of the elevator taking request signal are performed in time, the phenomenon that the elevator is not allocated with the elevator taking request but the car moving time is shorter than the passenger moving time does not occur.

The elevator group management system of the embodiment makes full use of the characteristic that the group management system takes the earliest arriving elevator as a main line instead of taking the elevator taking request as a main line in the prior art (when the elevator taking request is taken as the main line, because a response elevator is not determined, the movement time of passengers corresponding to the response elevator cannot be determined, and therefore allocation cannot be executed at the optimal time (namely, the latest time), and determines the optimal allocation time according to the earliest arriving elevator and the movement time of the passengers corresponding to the earliest arriving elevator, thereby realizing the optimal allocation effect.

In addition, a method for selecting a reasonable elevator taking request combination from the elevator taking requests which are not allocated and allocating the combination to the earliest arriving elevator can be seen in the second embodiment.

Example two

The elevator group management method of the application aims at the elevator which returns to the main landing at the earliest, namely the elevator which returns to the main landing at the earliest.

Allocating an unallocated elevator taking request for an earliest returning elevator so that a time interval between a returning moment when the earliest returning elevator returns to a main landing again after passenger transportation is completed and a returning moment of an adjacent elevator adjacent to the main landing is not less than a time threshold value, or a horizontal distance between a position of the earliest returning elevator at the main landing and a position of the adjacent elevator at the main landing is not less than a distance threshold value; the earliest return elevator refers to an elevator which returns to the main landing earliest, so that the separation of passengers of different target elevators is realized, and the passengers are prevented from taking in a non-target elevator car.

The earliest return elevator satisfies the following conditions:

a first condition is that an elevator taking request with a main landing as a starting floor is allocated; secondly, the elevator arrives at the main landing again after the elevator taking request is completed; a third condition is that the running direction when the elevator arrives at the main landing again is consistent with the running direction when the elevator departs from the main landing after receiving the distributed elevator taking request; in the fourth condition, the arrival time is the earliest in all elevators that arrive at the main landing again.

The elevator group management method estimates the returning time (the transportation) of each elevator to the main landing according to the elevator running information (mainly the running direction, the current car position, the floor to be stopped and the like), and determines the earliest returning elevator according to the returning time.

The group management method estimates the returning time of each elevator when returning to the main landing according to the first time, the second time and the third time;

the first time refers to the time required by the elevator to start from the main floor station, run to the farthest target floor at the rated speed and return to the main floor station is calculated according to the distance between the farthest target floor and the main floor station and the rated running speed of the elevator;

the second time refers to the extra increased moving time caused by all stops of the elevator calculated according to the number of the allocated target floors; the extra increased travel time caused by all stops is calculated, for example, from the number of assigned destination floors (destination floors here refer to different destination floors, the same destination floor not counting again) (one decelerated stop and accelerated start per stop). The additional increased travel time caused by a single stop can be calculated from the time that the elevator needs to spend in relation to the travel distance at nominal speed corresponding to the acceleration and deceleration process in the starting process to and from the stop floor.

And the third time refers to the time consumed by the passengers for getting off the elevator according to the number of the passengers corresponding to the distributed destination floor.

The elevator group management method determines the returning sequence of the earliest returning elevator relative to other elevators when the earliest returning elevator returns to the main landing again after the completion of the transportation of passengers according to at least one of preset factors; wherein, the return sequence refers to the sequence when the current passenger conveying is completed and returned to the main landing (returning this time) relative to other elevators, or the sequence when the current passenger conveying is completed and returned to the main landing relative to other elevators, and the conveying is completed and returned again after the elevator taking request currently allocated to the elevator enters the car and starts; the preset factors comprise the number of waiting passengers, the waiting time of the passengers, the running efficiency of the elevator and the power consumption of the elevator.

The group management method determines the return order of the earliest returning elevator relative to other elevators when returning to the main landing again after completing the transportation of passengers of all the returning elevators according to the return time of each elevator, and determines the adjacent elevator which returns to the main landing earliest.

The elevator group management method adjusts the return moment of the earliest returning elevator by adjusting the not-yet-allocated elevator taking request allocated to the earliest returning elevator.

Preferably, the elevator group management method adjusts the time interval between the return times of the earliest return elevator and the adjacent elevator by adjusting the return time of the earliest return elevator. The time interval is not shorter than the time for passengers to move from the elevator waiting area to the elevator farthest away from the elevator waiting area or the passenger moving time required for passengers to move to the earliest returning elevator.

Illustratively, the elevator group management method determines the elevator taking request allocation plan according to the following steps:

The required resource refers to the required resource occupied by the passenger when taking the elevator. The available resources refer to the available resources that the elevator is currently able to provide to the passenger. For example, when two transfer passengers carry a carrying object with a large occupied area, the required resources occupied by the passengers for taking the elevator are the riding area, so the required resources in this case refer to the riding area occupied by the passengers, and the available resources are represented by the riding area which can be occupied by the passengers and can be provided for the passengers by the elevator car. The riding area required by an individual passenger is a standard value a1, and the riding area required by the carrying object is determined by the length and width (a2 and a3) of the rectangle which can contain the carrying object. For the elevator, the available resources (namely, riding area) which can be provided for the transfer passengers can be obtained by processing image data which are collected by a camera arranged in the car and reflect the space occupation condition in the car through a proper algorithm. Further, reference may be made to published patent documents CN202010295007.6 and CN 201910609480.4.

Said step S5 selecting a final allocation plan for the boarding request for the earliest returning elevator according to at least one of preset principles; the preset principle comprises the following steps: the elevator control method based on the time interval optimization principle is characterized by comprising the following steps of optimizing the time interval principle, shortening the waiting time of passengers, improving the operation efficiency of the elevator and reducing the power consumption of the elevator.

The time interval optimization principle refers to the time interval which is the maximum or closest to the passenger moving time required by the passenger to move from the waiting area to the earliest returning elevator.

When multiple preset principles are adopted simultaneously, the evaluation indexes under each preset principle are respectively established for a certain to-be-selected distribution scheme, the weighted sum of the evaluation indexes under each preset principle is used as the total index of the to-be-selected distribution scheme, and the final distribution scheme is selected according to the total index of each to-be-selected distribution scheme.

The evaluation index of the time interval optimization principle is the difference value of the time interval and the passenger moving time required by the passenger to move from the elevator waiting area to the elevator farthest away from the elevator waiting area or to move to the elevator returning earliest, or the ratio of the difference value to the passenger moving time.

Another exemplary elevator group management method determines an elevator boarding request allocation plan according to the following steps:

Said step S6 selecting a final allocation plan as a landing call for said earliest returning elevator according to at least one of preset principles; the preset principle comprises the following steps: the elevator control method based on the distance optimization principle is characterized by comprising the following steps of optimizing the distance principle, shortening the waiting time of passengers, improving the operation efficiency of the elevator and reducing the power consumption of the elevator. The distance optimization criterion refers to whether the horizontal distance is at a maximum or closest to a distance threshold.

When multiple preset principles are adopted simultaneously, the evaluation indexes under each preset principle are respectively established for a certain distribution scheme to be selected, the weighted sum of the evaluation indexes under each preset principle is used as the total index of the distribution scheme to be selected, and the final distribution scheme is selected according to the total index of each distribution scheme to be selected. The evaluation index of the distance optimization principle is the difference between the horizontal distance and the maximum horizontal distance between all elevators or the ratio of the difference to the maximum horizontal distance.

This embodiment is to separate passengers taking different elevators by adjusting the time interval. In the claims and the description, the main floor refers to a large passenger floor, and the large passenger floor may be a bottommost floor among all floors or an intermediate floor located at a non-end floor. When the main landing is the bottom end floor, the elevator which returns to the main landing at the earliest time means that the elevator goes upward to finish the conveyance of the inner passengers and then goes downward (even the downward passengers can be conveyed to the destination floor in the downward process) to reach the bottom end floor, and the elevator is reversed; when the main landing is the middle landing, the elevator that returns to the main landing earliest may be operated in a certain first direction, and after the passenger in the certain first direction is transported, the elevator is operated to the middle landing in a second direction opposite to the first direction (at this time, the elevator operation direction is the second operation direction), or may be operated to the main landing, and the operation direction thereof is the first direction (it may be that there is no floor to be parked in the second operation direction behind the main landing, and the elevator is directly parked at the main landing and the operation direction is reversed, or it may be that after the elevator passes the main landing in the second operation direction, the elevator is operated to the main landing again in the first direction in the reverse direction after the operation of the relevant passenger is completed).

Following the example of embodiment one, in the morning 8: at the time k of the peak-to-peak period from the beginning of 30 to the end of 9:10, add the existing: passenger 8 with destination floor of 10, passenger 10 with destination floor of 16, passenger 5 with destination floor of 21, and passenger 12 with destination floor of 28. And generating a plurality of allocation schemes to be selected according to the method, and then selecting one scheme from the allocation schemes as a final allocation scheme.

The present invention has been described in detail with reference to the specific embodiments, which are merely preferred embodiments of the present invention, and the present invention is not limited to the above embodiments. Equivalent alterations and modifications made by those skilled in the art without departing from the principle of the invention should be considered to be within the technical scope of the invention.

Claims

1. An elevator group management method is characterized in that an unallocated elevator taking request is allocated to an earliest returning elevator, so that the time interval between the returning moment when the earliest returning elevator returns to a main landing again after passenger transportation is finished and the returning moment of an adjacent elevator adjacent to the main landing is not less than a time threshold value, or the horizontal distance between the position of the earliest returning elevator at the main landing and the position of the adjacent elevator at the main landing is not less than a distance threshold value; the earliest return elevator refers to an elevator which returns to the main landing earliest.

2. Group management method according to claim 1, characterized in that the earliest returning elevator fulfils the following condition:

a first condition, in which an elevator riding request with a main landing as a starting floor is allocated;

secondly, the elevator arrives at the main landing again after the elevator taking request is completed;

the third condition is that the running direction when the elevator arrives at the main landing again is consistent with the running direction when the elevator departs from the main landing after receiving the distributed elevator taking request;

in the fourth condition, the arrival time is the earliest in all elevators arriving again at the main landing.

3. The elevator group management method according to claim 1, wherein the elevator group management method estimates a return time at which each elevator returns to the main landing based on the elevator running information, and determines the earliest returning elevator based on the return time.

4. The elevator group management method according to claim 3, wherein the elevator group management method estimates a return time when each elevator returns to the main landing from the first time, the second time, and the third time;

the first time refers to the time required by the elevator to start from the main landing and run to the farthest target floor at the rated speed and return to the main landing according to the distance between the farthest target floor and the main landing and the rated running speed of the elevator;

the second time refers to the extra increased moving time caused by all stops of the elevator calculated according to the number of the allocated target floors;

5. The elevator group management method according to claim 3, wherein the elevator group management method determines a return order of the earliest returning elevator with respect to other elevators when returning to the primary landing again after completion of its passenger transportation, according to at least one of preset factors;

the return sequence refers to the sequence when the current passenger conveying is completed and returned to the main landing relative to other elevators, or the sequence when the current passenger conveying is completed and returned to the main landing relative to other elevators, and the conveying is completed and returned again after the current elevator taking request allocated to the elevator enters the lift car and is started;

the preset factors comprise the number of waiting passengers, the waiting time of the passengers, the running efficiency of the elevator and the power consumption of the elevator.

6. The elevator group management method according to claim 1 to 4, characterized in that the group management method determines, from the return time of each elevator, the return order of the earliest returning elevator with respect to the other elevators when returning to a main landing again after completion of its passenger transportation among all the returning elevators, while determining the adjacent elevator that returned to the main landing earliest.

7. Group management method according to claim 3, characterized in that it adjusts the return moment of the earliest returning elevator by adjusting the not yet allocated ride request allocated to the earliest returning elevator.

8. The elevator group management method according to claim 7, wherein the adjusting of the unallocated elevator taking requests allocated to the earliest returning elevator means adjusting the number of unallocated elevator taking requests allocated to the earliest returning elevator and the position of a destination floor in the elevator taking requests at a main landing, or adjusting the number of unallocated elevator taking requests allocated to the earliest returning elevator and the vertical distance between the destination floor farthest from the main landing and the main floor in the elevator taking requests.

9. Elevator group management method according to claim 7, characterized in that the elevator group management method changes the adjacent elevator of the earliest returning elevator by adjusting the returning moment of the earliest returning elevator to adjust the returning order of the earliest returning elevator relative to the other elevators when the earliest returning elevator returns to the main landing again after completing its passenger transport.

10. Elevator group management method according to claim 7 or 9, characterized in that the elevator group management method adjusts the time interval between the return moments of the earliest returning elevator and the adjacent elevator by adjusting the return moment of the earliest returning elevator.

11. The elevator group management method of claim 9, wherein the elevator group management method adjusts the horizontal distance between the location of the earliest returning elevator at a primary landing and the location of its neighboring elevator at the primary landing by adjusting the neighboring elevator of the earliest returning elevator.

12. The elevator group management method according to claim 1 or 10, wherein the time interval is not shorter than a time for a passenger to move from an elevator-waiting area to an elevator farthest from the elevator-waiting area or a passenger moving time required to move to the earliest returning elevator.

13. The elevator group management method according to claim 1 or 10, wherein the elevator group management method determines the boarding request allocation plan according to the steps of:

14. The elevator group management method according to claim 13, wherein said step S5 is selected as a final allocation plan of an elevator taking request to the earliest returning elevator according to at least one of preset principles;

the preset principle comprises the following steps: the elevator control method based on the time interval optimization principle is characterized by comprising the following steps of optimizing the time interval principle, shortening the waiting time of passengers, improving the operation efficiency of the elevator and reducing the power consumption of the elevator.

15. Elevator group management method according to claim 14, characterized in that the time interval optimization principle is the time interval maximum or closest to the passenger movement time required for the passenger to move from the waiting area to the earliest return elevator.

16. The elevator group management method according to claim 14, wherein when a plurality of preset principles are simultaneously employed, evaluation indexes under each preset principle are respectively established for a certain candidate allocation scheme, a weighted sum of the evaluation indexes under each preset principle is used as a total index of the candidate allocation scheme, and a final allocation scheme is selected according to the total index of each candidate allocation scheme.

17. The elevator group management method according to claim 16, wherein the evaluation index of the time interval optimization principle is a difference between the time interval and a passenger moving time required for a passenger to move from an elevator taking waiting area to an elevator farthest from the elevator taking waiting area or to move to an elevator returning earliest, or a ratio of the difference to the passenger moving time.

18. The elevator group management method according to claim 11, wherein the elevator group management method determines the boarding request allocation plan according to the steps of:

19. The elevator group management method according to claim 18,

said step S6 selecting a final allocation plan as a landing call for said earliest returning elevator according to at least one of preset principles;

the preset principle comprises the following steps: the elevator control method based on the distance optimization principle is characterized by comprising the following steps of optimizing the distance principle, shortening the waiting time of passengers, improving the operation efficiency of the elevator and reducing the power consumption of the elevator.

20. The elevator group management method according to claim 19, wherein the distance optimization criterion is that the horizontal distance is at a maximum or closest to a distance threshold.

21. The elevator group management method according to claim 20, wherein when a plurality of preset principles are simultaneously employed, evaluation indexes under each preset principle are respectively established for a certain candidate allocation scheme, a weighted sum of the evaluation indexes under each preset principle is used as a total index of the candidate allocation scheme, and a final allocation scheme is selected according to the total index of each candidate allocation scheme.

22. Method for elevator group management according to claim 21, characterized in that the evaluation criterion of the distance optimization principle is the difference of the horizontal distance and the maximum horizontal distance of all elevators from each other or the ratio of the difference and the maximum horizontal distance.

23. Group management method according to any of the preceding claims, characterized in that it monitors the return time of each elevator and takes the time at which the car movement time of the earliest returning elevator is longer than the time threshold as the time at which the request for boarding is allocated to the earliest returning elevator.

24. An elevator group management system, characterized in that the group management system comprises:

a determining unit for determining the earliest returning elevator which returns to the main landing earliest in each elevator according to the car moving time output by the estimating unit, wherein the maximum value of the car moving time of the earliest returning elevator is not less than a time threshold value;

25. The elevator group management system of claim 24, wherein the time threshold is a passenger movement time required for a passenger to move from an elevator waiting area to an elevator farthest from the elevator waiting area or to the earliest returning elevator.

26. The elevator group management system according to claim 24, wherein the allocation unit allocates an unallocated elevator taking request for the earliest returning elevator using any of the elevator group management methods of claims 1 to 23.

27. The elevator group management system according to claim 24, wherein the selection unit monitors the return timing of each elevator, and takes a timing at which the car moving time of the earliest returning elevator is longer than the time threshold as a timing at which an elevator taking request is assigned to the earliest returning elevator.