Method for judging passenger's reverse elevator behavior and elevator control method

Abstract

The present invention discloses a method for judging the behavior of passengers taking the elevator in reverse, comprising: step S1, obtaining the running direction information and passenger information of the elevator; step S2, determining the first floor of the elevator according to the running direction information; step S3, analyzing the passenger information, judging whether all passengers in the elevator car have left the elevator car while the elevator is stopped at the first floor, if so, entering step S4, otherwise ending; step S4, judging whether the first judgment condition in the judgment condition of taking the elevator in reverse is satisfied; step S5, judging whether all judgment conditions in the judgment condition of taking the elevator in reverse are satisfied, if so, judging the result is that there is a passenger taking the elevator in reverse, ending, otherwise judging the result is that there is no passenger taking the elevator in reverse, ending. The judgment method of the present invention can simply and accurately judge whether there is a passenger taking the elevator in reverse behavior. The present invention also discloses an elevator control method.

Description

Technical Field

[0001] The invention relates to the field of elevators, and in particular to a method for judging a passenger's reverse elevator riding behavior and an elevator control method. Background Art

[0002] During busy passenger flow periods, passengers waiting for the elevator on non-terminal floors of a building often encounter such embarrassing scenes: after waiting for a long time, the elevator will pass directly every time it passes because it is full, so they cannot take the elevator, or although it is not full, the elevator is very crowded and it is difficult to enter the elevator, so they cannot take the elevator smoothly many times. In order to take the elevator as soon as possible, many passengers will take the so-called "reverse elevator", that is, first take the elevator car running in the opposite direction of the passenger's desired travel direction, so that the elevator changes direction after reaching the end of this operation process, and then moves in the desired travel direction, thereby shortening their waiting time for the elevator and reaching their destination floor as soon as possible. However, this "reverse elevator" behavior of passengers will seriously reduce the overall operating efficiency of the elevator and damage the normal rights of other passengers to take the elevator. Therefore, it is necessary to determine whether there is such a passenger "reverse elevator" behavior in the elevator car, and after determining that there is a passenger "reverse elevator" behavior, the elevator can be properly controlled to effectively solve the problem of passengers being unable to take the elevator for a long time due to full load or congestion.

[0003] In response to the above-mentioned passenger "reverse riding" behavior, the authorized invention patent (authorization announcement number is CN111591846B) proposes: based on the image recognition results in the elevator cabin before and after the elevator running direction changes, it is determined whether there are the same passengers in the cabin before and after the elevator running direction changes, and based on the judgment results, it is determined whether there are "reverse riding" passengers. This solution has the following disadvantages:

[0004] 1) It is necessary to collect at least two images inside the car (before and after the elevator changes its running direction);

[0005] 2) Image recognition needs to be performed twice, and image recognition needs to be performed for each passenger, which results in a heavy information processing load;

[0006] 3) For the identification results, they only make a simple comparison to determine whether there are the same passengers, but do not make full use of the identification results. That is, they pay a great price and only make simple use of them, which means that the cost is huge but the gain is relatively small.

[0007] 4) It is not possible to distinguish whether a passenger's reverse riding is a subjective intentional "reverse riding" behavior or an unintentional behavior caused by entering a non-target elevator car due to negligence or other reasons. Therefore, there is a high probability of misjudgment in the identification of reverse riding.

[0008] Therefore, how to simply and reliably determine whether there is "reverse riding" behavior in the elevator car has become a technical problem to be solved.

[0009] The technical problem to be solved by the present invention is to provide a method for judging whether a passenger is riding the elevator in the opposite direction. The method can overcome the shortcomings of the existing technical solutions such as large processing load and possible misjudgment, and can simply and reliably judge whether there is a passenger "riding the elevator in the opposite direction" in the elevator car.

[0010] In order to solve the above technical problems, the present invention provides a method for determining a passenger's reverse elevator behavior, comprising the following steps:

[0011] Step S1, obtaining the running direction information and passenger information of the elevator;

[0012] Step S2, determining the first floor of the elevator according to the running direction information;

[0013] Step S3, analyzing the passenger information, determining whether all passengers in the elevator car have left the elevator car while the elevator is parked at the first floor during the process of the elevator running from the second floor to the first floor, if so, proceeding to step S4, otherwise ending; Step S4, further determining that the first judgment condition in the reverse riding judgment condition is met, the first judgment condition is:

[0014] At least one passenger enters the elevator car before the elevator runs to the first floor in the running direction before the change, and does not leave the elevator car at the first floor;

[0015] Step S5, judging whether all the judgment conditions in the reverse riding judgment conditions are met, if so, the judgment result of the judgment method is that there is a passenger reverse riding behavior, and the process ends; otherwise, the judgment result of the judgment method is that there is no passenger reverse riding behavior, and the process ends;

[0016] The first floor is the floor where the elevator is located when the running direction is changed, and the second floor is the last stop floor before the elevator reaches the first floor along the running direction before the change.

[0017] Preferably, the passenger information is the passenger's position information in the elevator car;

[0018] The step S3 analyzes the passenger information to obtain the movement trajectory of the passengers in the elevator car, and determines that all the passengers have left the elevator car when the movement trajectories of all passengers start from the inside of the elevator car and end at the elevator door.

[0019] Preferably, step S3 also analyzes the passenger information to obtain the moving speed of the passengers in the elevator car, and further determines whether all passengers have left the elevator car based on whether the moving trajectories of all passengers end at the elevator door and whether the moving speed at or near the end of the moving trajectory is greater than a speed threshold.

[0020] Preferably, the passenger information and the movement trajectory both correspond to a movement process of the elevator car from the second floor to the first floor.

[0021] Preferably, the passenger information is the number of passengers, and step S3 determines whether all passengers have left the elevator car based on whether the number of passengers in the elevator car during the process of the elevator running from the second floor to the first floor is equal to the number of passengers leaving the elevator car while the elevator car stops at the first floor.

[0022] Preferably, the number of passengers in the elevator car during the process and the number of passengers leaving the elevator car during the process are determined in any of the following ways:

[0023] Method 1, using an image acquisition device in the car to acquire images in the car during the process, then performing image recognition on the acquired images in the car, and determining the number of passengers in the elevator car during the process based on the image recognition results of the images in the car;

[0024] The image acquisition device disposed in the elevator lobby or in the elevator car is used to acquire the image of the entrance and exit of the elevator car, and then the image recognition is performed on the acquired image of the entrance and exit of the elevator car, and finally the number of passengers in the said period is determined based on the recognition result of the image of the entrance and exit of the elevator car, or the number of reductions in the weighing result output by the weighing device used to detect the actual load in the elevator car is counted, and when the number of reductions is greater than a threshold value, the number of reductions is the number of passengers leaving the elevator car during the said period;

[0025] Method 2: firstly identify the identity tag carried by the passenger or the biometric feature of the passenger, and then determine the number of passengers in the elevator car during the process and the number of passengers leaving the elevator car during the process based on the identification result;

[0026] Method 3: Utilize at least two long strip sensors arranged on the elevator door or lintel at a certain distance along the depth direction of the elevator car to detect passengers entering and leaving the car; determine whether the obstruction enters or leaves the elevator car based on the position of the long strip sensors and the order in which they detect the obstructions, and thereby determine the number of passengers leaving the elevator car through statistics; perform detection and statistics on each stop floor, and after simple calculation, the number of passengers in the elevator car during the process and the number of passengers leaving the elevator car during the period can be obtained.

[0027] Preferably, the step S1 uses a weighing device for detecting the actual load in the elevator car to detect the load in the elevator car, and outputs the weighing result output by the weighing device as the passenger information;

[0028] The step S3 determines whether all passengers have left the elevator car according to whether the absolute value of the difference between the weighing result in the process and the accumulated value of all reductions of the weighing results in the period is less than the weighing threshold.

[0029] Preferably, the reverse riding judgment condition further includes at least one of the following judgment conditions:

[0030] The second judgment condition is that the elevator is in a peak passenger flow state and / or the difference between the actual load in the car and the rated load is less than the load threshold;

[0031] The third judgment condition is that the absolute distance between the last n stopping floors where passengers enter the elevator car before the elevator runs along the running direction before the change and the first floor is less than the distance threshold or the relative distance is less than the distance threshold;

[0032] The fourth judgment condition is that the absolute distance or relative distance between the first floor and the terminal floor or main floor station of the building is less than a distance threshold;

[0033] A fifth judgment condition is that the passenger flow along the running direction before the change is greater than the passenger flow along the running direction after the change;

[0034] The sixth judgment condition is that among the last n stopping floors where passengers enter the elevator before the elevator runs along its previous running direction to the first floor, the passenger flow from the floor where the passenger farthest from the first floor enters to the first floor is less than the passenger flow after the running direction is changed.

[0035] Preferably, the third judgment condition or the sixth judgment condition further includes at least one of the following conditions:

[0036] Condition 1: The waiting time of the passengers waiting for the elevator at the last n floors exceeds the time threshold;

[0037] Condition 2: when passing the last n stopping floors along the running direction before changing direction, the number of floors that the elevator passes continuously with full passengers or the number of floors that are crowded or overloaded although the elevator stops exceeds the quantity threshold, or the ratio of the number of floors that the elevator passes with full passengers or the number of floors that are crowded or overloaded although the elevator stops within a certain period of time to the number of all stoppable floors passed by the elevator car before arriving at the first floor exceeds the ratio threshold.

[0038] Preferably, the judgment method generates and outputs notification information after determining that there is a passenger's reverse riding behavior, and the notification information at least includes dissuasion content for the passenger, or also includes information on reduced elevator operating efficiency caused by the passenger's reverse riding behavior.

[0039] In order to solve the above problems, the present invention also provides an elevator control method. The control method adopts a method for judging the passenger's reverse riding behavior to determine that there is a passenger's reverse riding behavior. When there is at least one specific floor among the n floors, the control method controls at least one elevator to use the specific floor as the first floor in one operation, so as to eliminate the cause and motivation of the passenger's reverse riding. The specific floor meets the following conditions: Condition 1, there is no destination floor of the current passengers in the elevator car in front of the floor along the running direction before the change; Condition 2, the distance between the floor and the first floor is the farthest.

[0040] Beneficial technical effects

[0041] The present invention only uses the number of passengers in the elevator car before the running direction is changed and the number of passengers leaving the car during the period when the elevator car stops at the floor where the running direction is changed to judge whether there is at least one passenger who enters the elevator car before the floor where the running direction is changed and does not leave the elevator car at the floor where the running direction is changed, and determines whether there is a "reverse elevator" passenger according to the judgment result. Since there is no need to specifically determine the "same passenger" in the prior art solution, and it can also distinguish "reverse elevator" from wrong elevator, the following technical effects can be achieved:

[0042] a) Reduce the requirements for basic information (i.e. the basic data required to determine the above two passenger numbers);

[0043] b) reducing the processing load of processing the basic information;

[0044] c) Improve the accuracy of recognition results;

[0045] d) Providing appropriate advice after determining that there is "reverse riding";

[0046] e) Eliminate the motivation of passengers to “take the elevator backwards” by appropriately adjusting controls. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 The present invention is a flow chart of an elevator judgment method for judging whether there is a passenger taking the elevator backwards in the elevator car. DETAILED DESCRIPTION

[0048] The following describes the implementation of the present invention through specific specific embodiments in conjunction with the accompanying drawings, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. In the following description, specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented or applied through other different specific embodiments, and the various details in this specification can also be based on different viewpoints and applications. Those skilled in the art can make various similar generalizations and substitutions without departing from the spirit of the present invention.

[0049] Embodiment 1

[0050] like Figure 1 As shown, the elevator judgment method for passenger reverse riding behavior of this embodiment is: when the number of passengers in the elevator car before the elevator changes direction is equal to the number of passengers getting off the elevator while the elevator stops at the first floor, the elevator judgment method determines that there is passenger reverse riding behavior in the elevator car.

[0051] The elevator determination method of this embodiment includes:

[0052] Step S1, obtaining the elevator running direction information and passenger information of the elevator;

[0053] Step S2, determining the first floor of the elevator according to the running direction information;

[0054] Step S3, analyzing the passenger information to determine whether all passengers in the elevator car have left the elevator car when the elevator is parked at the first floor during the process of the elevator running from the second floor to the first floor. If so, proceed to step S4, otherwise, end;

[0055] Step S4, further determining that the first judgment condition in the reverse riding judgment condition is satisfied, wherein the first judgment condition is:

[0056] At least one passenger enters the elevator car before the elevator runs to the first floor in the running direction before the change, and does not leave the elevator car at the first floor;

[0057] Step S5, judging whether all the judgment conditions in the reverse riding judgment conditions are met, if so, the judgment result of the judgment method is that there is a passenger reverse riding behavior, and the process ends; otherwise, the judgment result of the judgment method is that there is no passenger reverse riding behavior, and the process ends;

[0058] The first floor is the floor where the elevator is located when the running direction is changed, and the second floor is the last stop floor before the elevator reaches the first floor along the running direction before the change.

[0059] Compared with the prior art, the judgment method in this embodiment utilizes the relationship between the number of passengers in the elevator car before the elevator changes direction and the number of passengers getting off when stopping to determine whether all passengers in the original car get off on the first floor, that is, whether all passengers in the car get off on the first floor before the elevator changes direction. Only the number information of passengers is used instead of identity information. Therefore, there is no need to specifically identify the specific identity of the passengers, which reduces the requirements for basic information and the information processing load.

[0060] In the existing technical solution, since it is necessary to compare the passengers in the elevator car before the elevator changes direction with the passengers when the elevator changes floors in the running direction (which should be after the elevator door closes and the passengers in the elevator car no longer change), it is necessary to specifically identify each passenger (such as facial recognition), which leads to high requirements for basic information and a large image recognition load (it is necessary to identify each passenger in the image before and after the running direction changes). Obviously, the solution of the present invention has significant technical advantages. In addition, the existing technical solution does not provide any technical inspiration for whether there are the same passengers in the two situations, which is to determine whether all the passengers in the original car have left the car on the first floor in this embodiment.

[0061] Embodiment 2

[0062] Based on the first embodiment, this embodiment describes in detail how the elevator judgment method determines whether all passengers in the elevator car have left the elevator car while the elevator is parked at the first floor during the process of the elevator running from the second floor to the first floor. In this embodiment, the passenger information is the position information of the passenger in the elevator car. The position information of passengers in the elevator car can come from the elevator floor, which is equipped with a grid-shaped sensor network. The sensors can detect the presence of passengers, and the output of the sensors and the position of the sensors themselves can be used to obtain the position information of passengers in the car; the two detectors installed in the car can also be used to detect the identification objects carried by the passengers, and the passenger's position information can be obtained according to the signal output by the detector (such as the signal strength corresponding to the distance between the identification object and the detector); the distance and angle between the passenger's mobile terminal and the signal receiving device installed in the car can also be used to obtain the position information; it can also be obtained by using the image captured by the camera device installed in the car (it should be emphasized that although image acquisition and recognition are also involved here, compared with the image in the prior art that needs to meet the accuracy requirements of face recognition, the image here only needs to be able to determine whether there is a passenger somewhere, so its requirements for the image and the corresponding image processing load are much lower than the prior art). Of course, other methods can also be used to obtain the position information of passengers in the elevator, which are not listed here one by one.

[0063] Step S3 first analyzes the passenger information, that is, the position information of the passengers in the elevator car; then, for each passenger in the car, the movement trajectory of each passenger in the car can be obtained by using the change of its position information; finally, it is judged whether all the passengers have left the elevator car according to whether the movement trajectories of all passengers start from the inside of the elevator car and end at the elevator door (the movement trajectory ends at the elevator door indicating that the passenger has left the elevator car), that is, when the movement trajectory of each passenger starts from the inside of the elevator car and ends at the elevator door, it is determined that all the passengers in the original car have left the car.

[0064] Preferably, the above passenger information and movement trajectory both correspond to the movement process of the elevator car from the second floor to the first floor.

[0065] Embodiment 3

[0066] Based on the second embodiment, this embodiment adds a condition for judging whether the passengers in the original car have left the car, in order to improve the accuracy of judging whether the passengers have left the elevator car.

[0067] At this time, the elevator judgment method also obtains the moving speed of the passengers in the elevator car by analyzing the passenger information; and when the moving trajectories of all passengers start from the inside of the elevator car and end at the elevator door and the moving speed at the end point of the trajectory or near the end point of the trajectory is greater than the speed threshold, the elevator judgment method will determine that all passengers have left.

[0068] This embodiment increases the moving speed to avoid possible misjudgment of a special scenario in which a passenger moves from the rear of the car to the door but does not leave the car while the elevator car is parked at a floor where the running direction is changed.

[0069] Embodiment 4

[0070] Based on the first embodiment, this embodiment describes in detail another implementation method of the elevator judgment method for judging that all passengers in the elevator car get off at the first floor before the elevator changes direction.

[0071] In this embodiment, the passenger information is the number of passengers. The elevator judgment method makes a judgment based on the number of passengers: when the number of passengers in the elevator car during the process of the elevator car starting from the last stop floor before the running direction is changed to the first floor along the running direction before the change is equal to the number of passengers who leave the car during the period when the elevator car stops at the running direction change floor, the judgment method determines that all passengers have left.

[0072] The elevator determination method uses any of the following methods to determine the number of passengers in the process and the number of passengers during the period:

[0073] Method 1: using an image acquisition device in the car to acquire images of the car during the process, then performing image recognition on the acquired images of the car, and determining the number of passengers in the process based on the image recognition results of the images of the car; using an image acquisition device set in the elevator lobby or in the car to acquire images of the car entrance and exit, then performing image recognition on the acquired images of the car entrance and exit, and finally determining the number of passengers during the period based on the recognition results of the car entrance and exit images, or counting the number of reductions in the weighing results output by a weighing device used to detect the actual load in the elevator car (only when the reduction in the detection result is greater than a threshold value is it recognized as a valid reduction, the purpose is to remove errors that may be caused by small fluctuations in the weighing result), the recognition method will regard it as a valid reduction in the detection result.

[0074] Method 2: firstly identify the identity tags carried by the passengers or the biometric features of the passengers, and then determine the number of passengers in the process and the number of passengers during the period based on the identification results.

[0075] Method 3: Utilize at least two long strip sensors (such as light curtains) arranged on the elevator door or lintel at a certain distance along the depth direction of the elevator car to detect passengers entering and leaving the car; determine whether the obstruction enters or leaves the elevator car based on the position of the long strip sensors and the order in which they detect the obstructions, thereby determining the number of passengers getting off the elevator through statistics; perform detection and statistics on each stop floor, and after simple calculation, the number of passengers in the process and the number of passengers during the period can be obtained.

[0076] At least two long strip sensors (such as light curtains) are arranged on the elevator door or lintel at a certain distance along the depth direction of the elevator car to detect passengers entering and leaving the car. Please refer to JP2013043711A, which will not be described in detail here.

[0077] Embodiment 5

[0078] Based on the first embodiment, this embodiment describes in detail another implementation method of how to determine whether all passengers in the elevator car get off at the floor where the running direction is changed before the elevator changes direction.

[0079] In this embodiment, the passenger information is the weighing result output by a weighing device for detecting the actual load in the elevator car; when the absolute value of the difference between the weighing result of the weighing device in the process and the accumulated value of all reductions in the weighing results during the period (a reduction in the detection result is considered to be a valid reduction only when it is greater than a threshold value) is less than a threshold value, the judgment method determines that all have left.

[0080] Embodiment 6

[0081] For the above embodiment, when it is determined that the passengers in the elevator car have all left the elevator car during the process of the elevator car starting from the last stop floor before the floor where the running direction is changed to the first floor when the elevator car is stopped at the first floor, it can be directly determined that there are passengers "riding the elevator in reverse". However, this simple determination may lead to many misjudgments, the most typical of which is when a passenger inadvertently enters a non-target elevator running in the opposite direction, and is identified as "riding the elevator in reverse".

[0082] For example, there are two elevators arranged side by side in a building. At a certain moment, the elevator goes down from the 8th floor to the 1st floor, and because a passenger in the underground garage has registered an upward call signal, the elevator will continue to go down to the B1 floor (the B1 floor is the lowest floor) where the underground garage is located, and then change the original downward direction to the upward direction. Because there are passengers getting off the elevator on the 1st floor in the car, the elevator stops on the 1st floor. At this time, the passenger who was waiting on the 1st floor to go up accidentally entered the elevator car due to negligence and other reasons, and then went down to the B1 floor with the elevator. Obviously, the passenger will not leave the car on the B1 floor, but will continue to stay in the car and re-register his destination floor when necessary. For this situation, whether it is the aforementioned embodiment or the prior art, the passenger will be judged as "reverse riding the elevator". But in fact, the passenger is not a "malicious" elevator rider in the traditional sense who wants to enter the car as soon as possible by "reverse riding the elevator" to reach the destination floor as soon as possible, but will damage the rights and interests of other passengers in the elevator. It is just a "careless" passenger.

[0083] In order to reduce the disadvantage of misjudgment in the above-mentioned embodiments or the prior art solutions, this embodiment overcomes the disadvantage by adding a judgment condition in the reverse elevator riding judgment condition on the basis of the above-mentioned embodiments or the prior art solutions.

[0084] In this embodiment, the reverse riding judgment condition includes at least one of the following conditions in addition to the first judgment condition:

[0085] a) The elevator is in peak passenger flow state and / or the difference between the actual load and the rated load in the car is less than the threshold;

[0086] b) The absolute distance between the last n (n is a natural number greater than or equal to 1) stopping floors before the running direction is changed and before the running direction is changed and passengers enter the car is less than a threshold value (i.e., a number of floors, when n is greater than 1, it is the distance between the passenger entry floor farthest from the running direction change floor and the running direction change floor) or the relative distance (i.e., the ratio of the aforementioned distance to the number of all floors that the elevator can stop) is less than a threshold value;

[0087] c) the absolute distance or relative distance between the floor where the running direction is changed and the terminal floor or main floor station of the building is less than a threshold value;

[0088] d) the passenger flow along the running direction before the change is greater than the passenger flow along the running direction after the change;

[0089] e) Among the last n (n is a natural number greater than or equal to 1) stopping floors before the floor where the running direction is changed after the elevator runs along its running direction before the change and where passengers enter the car, the passenger flow from the passenger entry floor farthest from the floor where the running direction is changed to the floor where the running direction is changed is less than the passenger flow after the running direction is changed.

[0090] Preferably, the above-mentioned condition b) or condition e) may be supplemented with:

[0091] The waiting time of the passengers waiting for the elevator at the last n floors stops exceeds a threshold; and / or

[0092] When passing the last n stopping floors along the running direction before changing direction, the number of times the elevator passes continuously with full passengers or the number of times it stops but is crowded or overloaded exceeds a threshold, or the number of times the elevator passes with full passengers or the number of times it stops but is crowded or overloaded within a certain period of time is equal to the total number of times the elevator car passes the floors where the running direction is changed (when there are multiple elevators and a group management system is configured, the total number is the number of times the responding elevator should stop).

[0093] Embodiment 7

[0094] In this embodiment, based on any of the foregoing embodiments, after determining that there is a "reverse riding" passenger, the elevator judgment method can further generate and output notification information, wherein the notification information at least includes advice content for the "reverse riding" passenger, or also includes information on reduced elevator operating efficiency caused by the passenger's "reverse riding" behavior.

[0095] Embodiment 8

[0096] The main reasons why passengers "take the elevator backwards" are: during peak passenger flow periods, passengers wait too long for the elevator or pass through multiple elevators without entering the elevator. Therefore, as long as the above conditions are eliminated, the phenomenon of passengers "taking the elevator backwards" can be reduced or even eliminated.

[0097] To this end, this embodiment proposes an elevator control method for "reverse riding". The control method adopts the judgment method for judging whether there is a passenger reverse riding behavior in the elevator car in the aforementioned embodiment 6. After judging whether there is a passenger reverse riding behavior, when there is at least one specific floor among the n floors, at least one elevator is controlled to use the specific floor as the first floor in one operation, so as to eliminate the cause and motivation of the passenger reverse riding. The specific floor is a floor that meets the following conditions:

[0098] Condition 1: There is no destination floor for the current passengers in the elevator car ahead of this floor along the running direction before the change; Condition 2: The distance between this floor and the first floor is the farthest.

[0099] By adopting the above control method, the reasons and motivations for passengers to "take the elevator backwards" can be eliminated.

[0100] The present invention is described in detail above through specific embodiments, which are only preferred embodiments of the present invention, and the present invention is not limited to the above embodiments. Without departing from the principle of the present invention, equivalent substitutions and improvements made by those skilled in the art should be regarded as within the technical scope protected by the present invention.

Claims

1. A method for judging a passenger's reverse elevator behavior, characterized in that: The steps include: Step S1, obtaining the running direction information and passenger information of the elevator; Step S2, determining the first floor of the elevator according to the running direction information; Step S3, analyzing the passenger information to determine whether all passengers in the elevator car have left the elevator car when the elevator is parked at the first floor during the process of the elevator running from the second floor to the first floor. If so, proceed to step S4, otherwise, end; Step S4, further determining that the first judgment condition in the reverse riding judgment condition is satisfied, wherein the first judgment condition is: At least one passenger enters the elevator car before the elevator runs to the first floor in the running direction before the change, and does not leave the elevator car at the first floor; Step S5, judging whether all the judgment conditions in the reverse riding judgment conditions are met, if so, the judgment result of the judgment method is that there is a passenger reverse riding behavior, and the process ends; otherwise, the judgment result of the judgment method is that there is no passenger reverse riding behavior, and the process ends; The first floor is the floor where the elevator is located when the running direction is changed, and the second floor is the last stop floor before the elevator reaches the first floor along the running direction before the change; The reverse riding judgment condition also includes at least one of the following judgment conditions: The second judgment condition is that the elevator is in a peak passenger flow state and / or the difference between the actual load in the car and the rated load is less than the load threshold; The third judgment condition is that the absolute distance between the last n stopping floors where passengers enter the elevator car before the elevator runs along the running direction before the change and the first floor is less than the distance threshold or the relative distance is less than the distance threshold; The fourth judgment condition is that the absolute distance or relative distance between the first floor and the terminal floor or main floor station of the building is less than a distance threshold; A fifth judgment condition is that the passenger flow along the running direction before the change is greater than the passenger flow along the running direction after the change; The sixth judgment condition is that among the last n stopping floors where passengers enter the elevator before the elevator runs along its previous running direction to the first floor, the passenger flow from the floor where the passenger farthest from the first floor enters to the first floor is less than the passenger flow after the running direction is changed.

2. The method for determining the passenger's reverse elevator behavior according to claim 1, characterized in that: The passenger information is the position information of the passenger in the elevator car; The step S3 analyzes the passenger information to obtain the movement trajectory of the passengers in the elevator car, and determines that all the passengers have left the elevator car when the movement trajectories of all passengers start from the inside of the elevator car and end at the elevator door.

3. The method for determining the passenger's reverse elevator behavior according to claim 2, characterized in that: The step S3 also analyzes the passenger information to obtain the moving speed of the passengers in the elevator car, and further determines whether all the passengers have left the elevator car based on whether the moving trajectories of all passengers end at the elevator door and whether the moving speed at or near the end of the moving trajectory is greater than a speed threshold.

4. The method for determining the passenger's reverse elevator behavior according to claim 2 or 3, characterized in that: The passenger information and the movement trajectory both correspond to the movement process of the elevator car from the second floor to the first floor.

5. The method for determining the passenger's reverse elevator behavior according to claim 1, characterized in that: The passenger information is the number of passengers, and step S3 determines whether all passengers have left the elevator car based on whether the number of passengers in the elevator car during the process of the elevator running from the second floor to the first floor is equal to the number of passengers leaving the elevator car while the elevator car stops at the first floor.

6. The method for determining the passenger's reverse elevator behavior according to claim 5, characterized in that: The step S1 determines the number of passengers in the elevator car and the number of passengers leaving the elevator car during the process by any of the following methods: Method 1, using an image acquisition device in the car to acquire images in the car during the process, then performing image recognition on the acquired images in the car, and determining the number of passengers in the elevator car during the process based on the image recognition results of the images in the car; The image acquisition device disposed in the elevator lobby or in the elevator car is used to acquire the image of the entrance and exit of the elevator car, and then the image recognition is performed on the acquired image of the entrance and exit of the elevator car, and finally the number of passengers in the said period is determined based on the recognition result of the image of the entrance and exit of the elevator car, or the number of reductions in the weighing result output by the weighing device used to detect the actual load in the elevator car is counted, and when the number of reductions is greater than a threshold value, the number of reductions is the number of passengers leaving the elevator car during the said period; Method 2: firstly identify the identity tag carried by the passenger or the biometric feature of the passenger, and then determine the number of passengers in the elevator car during the process and the number of passengers leaving the elevator car during the process based on the identification result; Method 3: Use at least two long strip sensors set on the elevator door or lintel at a certain distance along the depth direction of the elevator car to detect passengers entering and leaving the car; determine whether the obstruction enters or leaves the elevator car based on the position of the long strip sensors and the order in which they detect the obstruction, thereby determining the number of passengers leaving the elevator car through statistics; Detection and statistics are performed on each stop floor, and the number of passengers in the elevator car during the process and the number of passengers leaving the elevator car during the process can be obtained after calculation.

7. The method for determining the passenger's reverse elevator behavior according to claim 1, characterized in that: The step S1 detects the car load using a weighing device for detecting the actual load in the elevator car, and outputs the weighing result as the passenger information; The step S3 determines whether all passengers have left the elevator car according to whether the absolute value of the difference between the weighing result in the process and the accumulated value of all reductions of the weighing results in the period is less than the weighing threshold.

8. The method for determining the passenger's reverse elevator behavior according to claim 1, characterized in that: The third judgment condition or the sixth judgment condition also includes at least one of the following conditions: Condition 1: The waiting time of the passengers waiting for the elevator at the last n floors exceeds the time threshold; Condition 2: when passing the last n stopping floors along the running direction before changing direction, the number of floors that the elevator passes continuously with full passengers or the number of floors that are crowded or overloaded although the elevator stops exceeds the quantity threshold, or the ratio of the number of floors that the elevator passes with full passengers or the number of floors that are crowded or overloaded although the elevator stops within a certain period of time to the number of all stoppable floors passed by the elevator car before arriving at the first floor exceeds the ratio threshold.

9. The method for determining the passenger's reverse elevator behavior according to claim 8, characterized in that: The judgment method generates and outputs notification information after determining that there is a passenger's reverse riding behavior, and the notification information at least includes dissuasion content for the passenger, or also includes information on reduced elevator operating efficiency caused by the passenger's reverse riding behavior.

10. An elevator control method, characterized in that: The control method adopts the method for judging the passenger's reverse riding behavior as described in claim 9 to determine that there is a passenger's reverse riding behavior, and when there is at least one specific floor among the n floors, the control method controls at least one elevator to use the specific floor as the first floor in one operation, so as to eliminate the cause and motivation of the passenger's reverse riding, and the specific floor is a floor that meets the following conditions: Condition 1: There is no destination floor for the current passengers in the elevator car ahead of the floor in the running direction before the change; Condition 2: The distance between this floor and the first floor is the farthest.

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