Method and device for evaluating passenger load of urban rail transit vehicle

Abstract

The present application provides a method and device for evaluating the passenger load of urban rail transit vehicles, relating to the technical field of rail transit. The method includes: determining the initial load of the vehicle before entering the station; after the vehicle enters the station, real-time tracking of the load data collected by the load acquisition device, and determining the minimum load tracked after the vehicle enters the station; after the vehicle leaves the station, determining the outbound load of the vehicle; determining the alighting load according to the initial load and the minimum load, and determining the boarding load according to the minimum load and the outbound load. This method is used to simply and effectively determine the boarding and alighting loads of the vehicle.

Description

Technical Field

[0001] This application relates to the technical field of urban rail transit, and in particular, to a method and device for evaluating the passenger load of urban rail transit vehicles. Background Art

[0002] After the rail transit vehicle stops at the station, there will be dynamic changes in passengers and accompanying items, that is, the moving process of passengers getting on and off the vehicle, and the load of the vehicle will therefore have dynamic changes.

[0003] The traditional method for calculating the vehicle load is as follows: The vehicle control system reads the data from the load pressure sensors installed on the vehicle and updates the data each time the train closes the door and departs. However, the data only represents the load carried by the vehicle when it departs from the station currently, and does not dynamically calculate the load of passengers getting on and off during the vehicle's stop at this station. Therefore, the operation management department cannot directly obtain from the vehicle the basic situation of passenger load changes at a certain station of the train.

[0004] Currently, there are already some methods for increasing video or other intelligent recognition devices to identify passenger flow, such as detecting the flow of passengers at this station through the turnstiles at the entrance and exit, but additional sensing devices need to be added, resulting in an increase in system cost and maintenance workload, and it is not possible to evaluate the load of passengers getting on and off a specific vehicle. Summary of the Invention

[0005] The purpose of the embodiments of this application is to provide a method and device for evaluating the passenger load of urban rail transit vehicles to achieve a simple and effective determination of the load of passengers getting on and off the vehicle.

[0006] In a first aspect, the embodiments of this application provide a method for evaluating the passenger load of urban rail transit vehicles, including: determining the initial load of the vehicle before entering the station; after the vehicle enters the station, real-time tracking of the load data collected by the load acquisition device, and determining the minimum load tracked after the vehicle enters the station; after the vehicle departs from the station, determining the departure load of the vehicle; determining the alighting load according to the initial load and the minimum load, and determining the boarding load according to the minimum load and the departure load.

[0007] In the embodiment of the present application, without separately adding intelligent perception devices to the vehicle, the load collection is realized by using the original load collection device of the vehicle, which will not increase the system cost and maintenance cost. On the one hand, determine the initial load of the vehicle before entering the station, and track the minimum load after the vehicle enters the station. Using the initial load and the minimum load after the vehicle enters the station, the alighting load of the vehicle can be determined. On the other hand, after the vehicle leaves the station, determine the outbound load of the vehicle. Using the outbound load and the minimum load after the vehicle enters the station, the boarding load of the vehicle can be determined. Furthermore, by using this method, the effective and simple determination of the boarding and alighting loads of the vehicle can be realized.

[0008] As a possible implementation, when the state of the vehicle is the parking state and the doors of the vehicle are in the open state, it is determined that the vehicle enters the station.

[0009] In the embodiment of the present application, when the state of the vehicle is the parking state and the doors of the vehicle are in the open state, it means that passengers will start to alight. Determining this moment as the vehicle entering the station can determine a more accurate alighting load.

[0010] As a possible implementation, the determining the initial load of the vehicle before entering the station includes: determining the initial load before the current entry based on the outbound load determined after the previous outbound.

[0011] In the embodiment of the present application, by using the outbound load determined after the vehicle's previous outbound, the accurate determination of the initial load before the current entry can be realized.

[0012] As a possible implementation, the determining the initial load before the current entry based on the outbound load determined after the previous outbound includes: judging whether an event that affects the load amount has occurred after the vehicle's previous outbound; if so, collecting real-time load data through the load collection device and determining the real-time load data as the initial load before the current entry; if not, determining the outbound load determined after the previous outbound as the initial load before the current entry.

[0013] In the embodiment of the present application, first judge whether an event that affects the load amount has occurred after the vehicle's previous outbound. If it has occurred, it means that the load amount may have changed during this period. Therefore, collect real-time load data through the load collection device and determine it as the initial load before the current entry. If it has not occurred, it means that the load amount has not changed during this period and there is no need to update. The outbound load determined after the previous outbound can be directly determined as the initial load before the current entry. Furthermore, the effective and accurate determination of the initial load before the current entry is realized.

[0014] As a possible implementation, the alighting load is expressed as: W 下= W0 - Wm, where W0 is the initial load and Wm is the minimum load.

[0015] In the embodiments of the present application, the difference between the initial load and the minimum load is determined as the off-board load, realizing the effective and accurate determination of the off-board load.

[0016] As a possible implementation, the on-board load is expressed as: W 上 = W1 - Wm, where W1 is the outbound load and Wm is the minimum load.

[0017] In the embodiments of the present application, the difference between the outbound load and the minimum load is determined as the on-board load, realizing the effective and accurate determination of the on-board load.

[0018] As a possible implementation, the method for evaluating the passenger load of urban rail transit vehicles further includes: obtaining the health status information of the vehicle; determining whether the off-board load and / or the on-board load is a normal load according to the health status information.

[0019] In the embodiments of the present application, after determining the on-board load and the off-board load, the health status information of the vehicle is obtained, and in combination with the health status information of the vehicle, it is determined whether the off-board load and / or the on-board load is a normal load, realizing the effective evaluation of the load.

[0020] In a second aspect, the embodiments of the present application provide an apparatus for evaluating the passenger load of urban rail transit vehicles, including: various functional modules for implementing the method for evaluating the passenger load of urban rail transit vehicles described in the first aspect and any possible implementation manner of the first aspect.

[0021] In a third aspect, the embodiments of the present application provide a vehicle control system, including: a processor and a memory communicatively connected to the processor; wherein, the memory stores instructions executable by the processor, and when the instructions are executed by the processor, the processor is enabled to execute the method for evaluating the passenger load of urban rail transit vehicles described in the first aspect and any possible implementation manner of the first aspect.

[0022] In a fourth aspect, the embodiments of the present application provide a computer-readable storage medium, on which a computer program is stored, and when the computer program is run by a computer, it executes the method for evaluating the passenger load of urban rail transit vehicles described in the first aspect and any possible implementation manner of the first aspect. Description of the Drawings

[0023] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0024] Figure 1 It is the first flow chart of the passenger load evaluation method for urban rail transit vehicles provided by the embodiments of the present application;

[0025] Figure 2 It is the second flow chart of the passenger load evaluation method for urban rail transit vehicles provided by the embodiments of the present application;

[0026] Figure 3 It is the structural schematic diagram of the passenger load evaluation device for urban rail transit vehicles provided by the embodiments of the present application;

[0027] Figure 4 It is the structural schematic diagram of the control system provided by the embodiments of the present application.

[0028] Icons: 300 - Passenger load evaluation device for urban rail transit vehicles; 310 - Determination module; 320 - Tracking module; 400 - Vehicle control system; 410 - Processor; 420 - Memory. Specific embodiments

[0029] The following will describe the technical solutions in the embodiments of the present application in combination with the accompanying drawings in the embodiments of the present application.

[0030] The technical solutions provided by the embodiments of the present application can be applied to the load evaluation of passengers on urban rail transit vehicles. Urban rail transit vehicles, such as high - speed trains, subways, trains, etc., all belong to urban rail transit vehicles.

[0031] On these urban rail transit vehicles, a load acquisition device is installed. The load acquisition device can be an intelligent recognition device with an intelligent sensing and recognition function, such as an infrared acquisition device, a video acquisition device, a wireless acquisition device, etc., which is not limited herein.

[0032] In the embodiments of the present application, the load data collected by the load acquisition device can be understood as the passenger load. When different intelligent recognition devices are used for load acquisition, it can be presented in the form of the number of passengers, the weight of passengers, etc., which is not limited herein.

[0033] It can be understood that after the vehicle enters the station, restricted by the company's guidance and the passengers' conscious behavior, it is usually the principle that passengers get off first and then get on. Even if there is a very small number of behaviors where getting on and off occur simultaneously, it also happens after the vast majority of passengers get off. Based on the above-mentioned behavior characteristics of passengers getting on and off the vehicle, it provides a feasible calculation basis for analyzing the change in the passenger load of getting on and off the vehicle. That is, the principle of the technical solution in the embodiments of the present application needs to be based on the principle that passengers get off first and then get on after the vehicle enters the station.

[0034] The hardware operating environment of the technical solution provided by the embodiments of the present application is a vehicle control system, or other vehicle controllers can also be used.

[0035] Next, please refer to Figure 1 , Figure 1 , which is a flowchart of the urban rail transit vehicle passenger load evaluation method provided by the embodiments of the present application. The method includes:

[0036] Step 110: Determine the initial load of the vehicle before entering the station.

[0037] Step 120: After the vehicle enters the station, continuously track the load data collected by the load collection device, and determine the minimum load tracked after the vehicle enters the station.

[0038] Step 130: After the vehicle leaves the station, determine the departure load of the vehicle.

[0039] Step 140: Determine the getting-off load based on the initial load and the minimum load, and determine the getting-on load based on the minimum load and the departure load.

[0040] In the embodiments of the present application, without separately adding intelligent sensing devices to the vehicle, the load collection is realized by using the original load collection device of the vehicle, which will not increase the system cost and maintenance cost. On the one hand, determine the initial load of the vehicle before entering the station, and track the minimum load after the vehicle enters the station. Using this initial load and the minimum load after the vehicle enters the station, the getting-off load of the vehicle can be determined. On the other hand, after the vehicle leaves the station, determine the departure load of the vehicle. Using this departure load and the minimum load after the vehicle enters the station, the getting-on load of the vehicle can be determined. Furthermore, using this method, the effective and simple determination of the getting-on and getting-off loads of the vehicle can be realized.

[0041] Next, the detailed implementation manners of this method will be introduced.

[0042] As an optional implementation manner, step 110 includes: determining the initial load before the current entry into the station based on the departure load determined after the previous departure.

[0043] In this embodiment, since the process of determining the boarding load and the alighting load is continuously executed, that is, each time the vehicle enters and exits the station, the boarding load and the alighting load are determined. Then, in step 110, it can be understood that the determined initial load is the load before the vehicle enters the station this time. And after the vehicle exited the station last time, the exiting load was correspondingly determined. Therefore, the initial load before the vehicle enters the station this time can be determined in combination with the exiting load determined after the vehicle exited the station last time.

[0044] In the embodiment of the present application, by using the exiting load determined after the vehicle exited the station last time, the accurate determination of the initial load before the vehicle enters the station this time can be achieved.

[0045] As an alternative embodiment, determining the initial load before the vehicle enters the station this time based on the exiting load determined after the vehicle exited the station last time includes: determining whether an event that affects the load amount has occurred after the vehicle exited the station last time; if so, collecting real-time load data through the load acquisition device and determining the real-time load data as the initial load before the vehicle enters the station this time; if not, determining the exiting load determined after the vehicle exited the station last time as the initial load before the vehicle enters the station this time.

[0046] In this embodiment, events that affect the load amount, such as: the vehicle has stopped midway, the vehicle has an accident, the vehicle has a breakdown, etc., are not limited herein.

[0047] Furthermore, if an event that affects the load amount has occurred to the vehicle, the exiting load determined last time cannot be directly determined as the initial load before the vehicle enters the station this time. It is necessary to collect real-time load data through the load acquisition device and then determine the real-time load data as the initial load before the vehicle enters the station this time.

[0048] If no event that affects the load amount has occurred to the vehicle, the load amount will not change, and the exiting load determined last time can be directly determined as the initial load before the vehicle enters the station this time.

[0049] In the embodiment of the present application, first determine whether an event that affects the load amount has occurred after the vehicle exited the station last time. If it has occurred, it means that the load amount may have changed during this period. Therefore, collect real-time load data through the load acquisition device and determine it as the initial load before the vehicle enters the station this time. If it has not occurred, it means that the load amount has not changed during this period and there is no need to update. The exiting load determined after the vehicle exited the station last time can be directly determined as the initial load before the vehicle enters the station this time. Furthermore, the effective and accurate determination of the initial load before the vehicle enters the station this time is achieved.

[0050] In some embodiments, the method further includes: determining that the vehicle enters the station when the vehicle is in a parked state and the vehicle door is in an open state.

[0051] Furthermore, in step 120, after determining that the vehicle has entered the station, the load data collected by the tracking load collection device is implemented, and the minimum load tracked during this process is determined.

[0052] When tracking the load data, the data of the load collection device can be continuously polled during this process. After tracking the minimum load, the minimum load is stored. This minimum load can represent the vehicle load value after passengers get off at the current station.

[0053] In the embodiment of the present application, when the vehicle is in a stopped state and the vehicle door is in an open state, it means that passengers will start to get off. At this time, it is determined that the vehicle has entered the station, and a more accurate off-load can be determined.

[0054] After that, the vehicle load will increase as passengers get on until the vehicle leaves the station. Therefore, in step 130, after the vehicle leaves the station, the off-station load of the vehicle is determined.

[0055] Corresponding to the vehicle entering the station, in some embodiments, after the vehicle door is closed and the vehicle drives out of the station, it can be determined that the vehicle has left the station.

[0056] As an alternative implementation, determining the off-station load of the vehicle includes: after the vehicle leaves the station, tracking the load data collected by the load collection device, and when the collected load data is stable, determining the load data at this time as the off-station load.

[0057] In this implementation, the load data being stable means that the collected load data is basically unchanged.

[0058] Furthermore, in step 140, the off-load is determined based on the initial load and the minimum load, and the on-load is determined based on the minimum load and the off-station load.

[0059] In some embodiments, the off-load is expressed as: W 下 = W0 - Wm, where W0 is the initial load and Wm is the minimum load.

[0060] In the embodiment of the present application, the difference between the initial load and the minimum load is determined as the off-load, realizing an effective and accurate determination of the off-load.

[0061] In some embodiments, the on-load is expressed as: W 上 = W1 - Wm, where W1 is the off-station load and Wm is the minimum load.

[0062] In the embodiment of the present application, the difference between the off-station load and the minimum load is determined as the on-load, realizing an effective and accurate determination of the on-load.

[0063] In some other embodiments, based on the above formula, the error of the load acquisition device can be added or subtracted. It can be that the error is added or subtracted from each load value, or the error is subtracted from or added to the final result. This error can be understood as the precision error of the load acquisition device.

[0064] It can be understood that steps 110 - 140 described above will be continuously executed during actual application, that is, during the entire operation of the vehicle, the detection of the on - vehicle load and the off - vehicle load will be continuously carried out.

[0065] Specifically, reference can be made to Figure 2 , in Figure 2 , it is determined to start calculating and locking Wm during the vehicle's inbound parking phase, and W1 is locked when the vehicle departs, that is, W0 at the next inbound. Considering that passengers may move between carriages after getting on the vehicle, W0 can be updated again when the vehicle arrives at the station and stops and the doors are not opened. Then, based on each determined load value, the calculation of the on - vehicle load and the off - vehicle load is realized.

[0066] In some embodiments, the determined on - vehicle load and off - vehicle load can also be evaluated. Therefore, as an optional implementation manner, the method further includes: obtaining the health status information of the vehicle; determining whether the off - vehicle load and / or the on - vehicle load is a normal load according to the health status information.

[0067] In this implementation manner, the health status information of the vehicle can include: vehicle age, vehicle power system data, historical load data of the vehicle, etc.

[0068] Based on the health status information of the vehicle, the on - vehicle load and / or off - vehicle load ranges matching different vehicle health status information can be pre - configured, and then the current on - vehicle load and / or off - vehicle load range corresponding to the current vehicle health status information is compared with the current on - vehicle load and / or off - vehicle load. If the current on - vehicle load and / or off - vehicle load matches the corresponding range, it is determined that the current on - vehicle load and / or off - vehicle load is a normal load; otherwise, it is not a normal load.

[0069] In the embodiments of the present application, after determining the on - vehicle load and the off - vehicle load, the health status information of the vehicle is obtained, and in combination with the health status information of the vehicle, it is judged whether the off - vehicle load and / or the on - vehicle load is a normal load, so as to realize the effective evaluation of the load.

[0070] In some other embodiments, the on - vehicle load and the off - vehicle load can also be compared. If the difference between the two does not meet the preset difference condition, it is determined that the two are not normal loads. If it meets, it is determined that the two are normal loads.

[0071] Further, if the on - vehicle load and / or the off - vehicle load is a normal load, the current on - vehicle load and / or off - vehicle load can be stored as load data.

[0072] If the on - vehicle load and / or the off - vehicle load is not a normal load, a prompt message can be sent to the vehicle monitoring end to remind that the on - vehicle load and / or the off - vehicle load is not a normal load, facilitating the monitoring personnel at the vehicle monitoring end to handle this situation.

[0073] Among them, the vehicle monitoring end can be a monitoring end inside the vehicle, such as the driver end; or it can be a remote monitoring end, such as an administrator at the vehicle management system end, etc., which is not limited here.

[0074] Adopting the technical solution provided by the embodiment of the present application has the following technical effects:

[0075] 1) Utilize the existing sensing methods of the vehicle, without relying on new devices and without additional costs; compared with traditional measurement methods, the data source is more direct and reliable, which is beneficial to the accuracy of data statistics and big data analysis.

[0076] 2) Use the logical combination of whether the vehicle stops and the door opening / closing information to provide an analysis idea and method for analyzing the situation of passengers getting on and off the train, providing data support for operation management and vehicle management.

[0077] 3) Simple transformation of existing vehicles, which is convenient for deployment and implementation.

[0078] 4) In the actual application of this solution, algorithms such as the time when passengers get on and off the train and the calculation of the flow of passengers between carriages can be further explored based on this principle.

[0079] Based on the same inventive concept, please refer to Figure 3 , an urban rail transit vehicle passenger load assessment device 300 is further provided in the embodiment of the present application, including: a determination module 310 and a tracking module 320.

[0080] The determination module 310 is used to determine the initial load of the vehicle before entering the station; the tracking module 320 is used to, after the vehicle enters the station, real - time track the load data collected by the load acquisition device and determine the minimum load tracked after the vehicle enters the station; the determination module 310 is further used to: after the vehicle leaves the station, determine the off - station load of the vehicle; determine the off - vehicle load according to the initial load and the minimum load, and determine the on - vehicle load according to the minimum load and the off - station load.

[0081] In the embodiment of the present application, the determination module 310 is further used to: when the state of the vehicle is a parking state and the door of the vehicle is in an open state, determine that the vehicle enters the station.

[0082] In an embodiment of the present application, the determining module 310 is specifically configured to: determine an initial load before the current inbound based on the outbound load determined after the previous outbound.

[0083] In an embodiment of the present application, the determining module 310 is specifically configured to: determine whether an event affecting the load amount has occurred after the vehicle's previous outbound; if so, collect real-time load data through the load acquisition device and determine the real-time load data as the initial load before the current inbound; if not, determine the outbound load determined after the previous outbound as the initial load before the current inbound.

[0084] In an embodiment of the present application, the determining module 310 is further configured to: obtain the health status information of the vehicle; determine whether the alighting load and / or the boarding load is a normal load according to the health status information.

[0085] The urban rail transit vehicle passenger load evaluation device 300 corresponds to the aforementioned urban rail transit vehicle passenger load evaluation method, and each functional module corresponds to each step of the method. Therefore, the implementation manners of each functional module refer to the descriptions in the foregoing embodiments and will not be repeated here.

[0086] Please refer to Figure 4 , an embodiment of the present application further provides a vehicle control system 400, as a hardware operating environment for the foregoing method, including: a processor 410 and a memory communicatively connected to the processor 420; wherein, the memory 420 stores instructions executable by the processor 410, and when the instructions are executed by the processor 410, the processor 410 is enabled to execute the urban rail transit vehicle passenger load evaluation method described in the foregoing embodiments.

[0087] It can be understood that the vehicle control system 400 may further include more components or modules, which are not limited herein.

[0088] An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is run by a computer, it executes the urban rail transit vehicle passenger load evaluation method described in the foregoing embodiments.

[0089] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some communication interfaces. The indirect coupling or communication connection of the devices or units can be in electrical, mechanical or other forms.

[0090] In addition, the units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0091] Furthermore, in each embodiment of the present application, the various functional modules can be integrated together to form an independent part, or each module can exist alone, or two or more modules can be integrated to form an independent part.

[0092] In this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0093] The above are only the embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for evaluating the passenger load of urban rail transit vehicles, characterized in that, including: Determine the initial load of the vehicle before entering the station; After the vehicle enters the station, track the load data collected by the load acquisition device in real time, and determine the minimum load tracked after the vehicle enters the station; After the vehicle leaves the station, determine the outbound load of the vehicle; Determine the alighting load according to the initial load and the minimum load, and determine the boarding load according to the minimum load and the outbound load; Obtain the health status information of the vehicle, and determine whether the alighting load and / or the boarding load is a normal load according to the health status information; wherein, the health status information includes: vehicle age, vehicle power system data, and historical load data of the vehicle.

2. The method for evaluating the passenger load of an urban rail transit vehicle according to claim 1, wherein When the vehicle is in a parked state and the vehicle door is in an open state, determine that the vehicle enters the station.

3. The method for evaluating the passenger load of urban rail transit vehicles according to claim 2, wherein The determination of the initial load of the vehicle before entering the station includes: Determine the initial load before this station entry based on the outbound load determined after the previous station exit.

4. The method for evaluating the passenger load of urban rail transit vehicles according to claim 3, characterized in that, The determination of the initial load before this station entry based on the outbound load determined after the previous station exit includes: Judge whether an event affecting the load has occurred after the vehicle's previous station exit; If so, collect real-time load data through the load acquisition device, and determine the real-time load data as the initial load before this station entry; If not, determine the outbound load determined after the previous station exit as the initial load before this station entry.

5. The method for evaluating the passenger load of an urban rail transit vehicle according to claim 1, wherein, The alighting load is expressed as: W 下 = W0 - Wm, where W0 is the initial load and Wm is the minimum load.

6. The method for evaluating the passenger load of urban rail transit vehicles according to claim 1, wherein The on-board load is expressed as: W 上 = W1 - Wm, where W1 is the off-station load and Wm is the minimum load.

7. An apparatus for evaluating the passenger load of an urban rail transit vehicle, characterized in that, including: A determination module for determining the initial load of the vehicle before entering the station; A tracking module for, after the vehicle enters the station, tracking in real time the load data collected by the load acquisition device, and determining the minimum load tracked after the vehicle enters the station; The determination module is further configured to: after the vehicle leaves the station, determine the outbound load of the vehicle; Determine the alighting load according to the initial load and the minimum load, and determine the boarding load according to the minimum load and the outbound load; The determination module is further configured to: obtain the health status information of the vehicle, and determine whether the alighting load and / or the boarding load is a normal load according to the health status information; wherein, the health status information includes: vehicle age, vehicle power system data, and historical load data of the vehicle.

8. A vehicle control system, characterized in that, including: A processor and a memory communicatively connected to the processor; Wherein, the memory stores instructions executable by the processor, and when the instructions are executed by the processor, the processor is enabled to execute the urban rail transit vehicle passenger load evaluation method according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that A computer program is stored on the computer-readable storage medium, and when the computer program is run by a computer, it executes the urban rail transit vehicle passenger load evaluation method according to any one of claims 1-6.

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