CN117227802A - Method, device, equipment and medium for testing running resistance of train under virtual marshalling - Google Patents
Method, device, equipment and medium for testing running resistance of train under virtual marshalling Download PDFInfo
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Abstract
The invention provides a method, a device, equipment and a medium for testing running resistance of a train under virtual marshalling, which relate to the technical field of rail transit and comprise the following steps: removing gradient operation data corresponding to the gradient state of the train from the train operation data, removing curve operation data of the train in a curve state, and obtaining target train data; determining running resistance of the train at different moments according to the corresponding train speeds at different moments in the target train data; and outputting a test result of the train running resistance according to the running resistance of the train at different moments and a preset running resistance curve. The invention can accurately collect the running resistance of the single train section of the virtual marshalling train, output the test result, provide more basis support for the section cooperative control effect and parameter adjustment of the urban rail virtual marshalling train, and ensure the normal work and safe operation of the virtual marshalling system.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a method, a device, equipment and a medium for testing running resistance of a train under virtual marshalling.
Background
In the patent application with the publication number of CN114670905A, a method for testing the running resistance of a train, related components and the train are disclosed, and are used for testing the running resistance of the train, controlling the train to enter an idle running state when the train runs to a preset speed, and collecting running resistance test data when the running speed of the train is reduced to the preset test speed; stopping collecting and storing the collected running resistance test data when the train reaches a preset end point or the running speed of the train is reduced to 0 before the train reaches the preset end point; in another patent application with publication number of CN113780642A, a method and a system for predicting aerodynamic resistance of a mixed long marshalling train are described, and the method and the system analyze the influence rules of aerodynamic resistance of different vehicles or vehicle marshalling units at different positions of the mixed long marshalling train by different front and rear end coupling vehicle combination modes; acquiring a vehicle arrangement mode of a mixed long marshalling train to be predicted, and constructing a local aerodynamic resistance model/whole aerodynamic resistance model of the mixed long marshalling train to be predicted based on an influence rule; and solving the local aerodynamic resistance model/the whole aerodynamic resistance model to obtain the real-time local aerodynamic resistance or the real-time whole car aerodynamic resistance of the long-consist train to be predicted.
However, the operation data of the virtual marshalling train in the single train section cannot be accurately and comprehensively acquired at the present stage, so that reference basis cannot be provided for adjusting the parameters related to the cooperative control of the operation of the virtual marshalling train section, and normal work and safe operation of the virtual marshalling system cannot be ensured.
Disclosure of Invention
The invention provides a method, a device, equipment and a medium for testing running resistance of a train under virtual marshalling, which are used for solving the technical defect that the acquisition and testing of running data of the existing virtual marshalling train in a single train section are not accurate enough.
In a first aspect, the present invention provides a method for testing running resistance of a train under a virtual consist, including:
removing gradient operation data corresponding to the gradient state of the train from the train operation data, removing curve operation data of the train in a curve state, and obtaining target train data;
determining running resistance of the train at different moments according to the corresponding train speeds at different moments in the target train data;
outputting a test result of the train running resistance according to the running resistance of the train at different moments and a preset running resistance curve;
the train operation data is screened and determined from initial train data according to the fact that the train is in a non-traction state;
The train initial data is determined in a preset test scene according to the virtual marshalling train running in the single train mode.
According to the method for testing the running resistance of the train under the virtual marshalling, provided by the invention, the gradient running data corresponding to the gradient state of the train is removed from the running data of the train, the curve running data of the train in the curve state is removed, and before the target train data is obtained, the method further comprises the steps of:
receiving a traction instruction and responding to the traction instruction, wherein the traction instruction is used for instructing the virtual marshalling train to apply traction to the train in a single train mode;
receiving a traction stopping instruction under the condition that the speed of the train is greater than or equal to a preset speed, and responding to the traction stopping instruction, wherein the traction stopping instruction is used for indicating to stop applying traction to the train;
and acquiring train initial data of the train.
According to the method for testing the running resistance of the train under the virtual marshalling, which is provided by the invention, the gradient running data corresponding to the gradient state of the train is removed from the running data of the train, the curve running data of the train in the curve state is removed, and the target train data is obtained, and the method comprises the following steps:
Determining train position information according to the train operation data;
determining a gradient position section, a curve position section and a target position section in the train position information from preset path parameters of the preset test scene;
and eliminating gradient operation data corresponding to the gradient position section and curve operation data corresponding to the curve position section from the train operation data, and obtaining target train data corresponding to the target position section.
According to the method for testing the running resistance of the train under the virtual marshalling, which is provided by the invention, the running resistance of the train under different moments is determined according to the corresponding train speeds under different moments in the target train data, and the method comprises the following steps:
dividing the operation time period of the target train data, and determining all target sub-time periods;
averaging all train speeds in each target subinterval, and determining a train speed average value corresponding to each target subinterval;
deriving the average value of the speed of each train corresponding to all the target subintervals, and determining the acceleration of the train at different moments;
inputting train acceleration at different moments to a preset running resistance equation, and obtaining running resistance at different moments output by the preset running resistance equation;
The preset running resistance equation is determined according to the train acceleration sample data and the train running resistance sample data in a linear fitting mode.
According to the method for testing the running resistance of the train under the virtual marshalling, the preset running resistance curve comprises a preset running resistance upper limit curve and a preset running resistance lower limit curve;
outputting a test result of the train running resistance according to the running resistance of the train at different moments and a preset running resistance curve, wherein the test result comprises the following steps:
outputting a test result of the train running resistance to pass under the condition that the running resistance of the train at different moments is between a preset running resistance upper limit curve and a preset running resistance lower limit curve;
otherwise, outputting the test result of the train running resistance as not passing.
According to the method for testing the running resistance of the train under the virtual marshalling, after the test result of the running resistance of the train is output as not passing, the method further comprises the following steps:
adjusting the operation parameters of the virtual marshalling train in a marshalling mode;
and determining train initial data again according to the running of the virtual marshalling train in the single train mode in the preset test scene so as to output a test result of the running resistance of the train until the test result of the running resistance of the train is output to pass.
According to the method for testing the running resistance of the train under the virtual marshalling, provided by the invention, before the gradient running data corresponding to the gradient state of the train is removed from the running data of the train and the curve running data of the train in the curve state is removed, the method further comprises the following steps:
determining traction operation data corresponding to a traction period in the initial data of the train, and determining braking operation data corresponding to a braking period;
and eliminating the traction operation data and the braking operation data from the initial train data to obtain the train operation data.
In a second aspect, the present invention provides a device for testing running resistance of a train under a virtual consist, comprising:
the acquisition unit is used for removing gradient operation data corresponding to the gradient state of the train from train operation data, removing curve operation data of the train in a curve state and acquiring target train data;
the determining unit is used for determining the running resistance of the train at different moments according to the corresponding train speeds at different moments in the target train data;
the output unit is used for outputting a test result of the running resistance of the train according to the running resistance of the train at different moments and a preset running resistance curve;
The train operation data is screened and determined from initial train data according to the fact that the train is in a non-traction state;
the train initial data is determined in a preset test scene according to the virtual marshalling train running in the single train mode.
In a third aspect, the present invention further provides an electronic device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor implements the method for testing the running resistance of the train under the virtual consist when the processor executes the program.
In a fourth aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of testing train running resistance under a virtual consist as described in any of the above.
The invention provides a method, a device, equipment and a medium for testing the running resistance of a virtual marshalling train, which are characterized in that in a preset test scene, train initial data are collected according to the running of the virtual marshalling train in a single train mode, train running data are screened out from the train initial data according to the fact that the train is in a non-traction state, gradient running data and curve running data are removed from the train running data, target train data are obtained, the running resistance of the train at different moments is determined according to the corresponding train speeds at different moments in the target train data, the collection of the running resistance of the virtual marshalling train is realized, the test result of the running resistance of the virtual marshalling train is output according to the running resistance of the train at different moments and a preset running resistance curve, and the test of the running resistance of the virtual marshalling train is realized.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a method for testing the running resistance of a train under a virtual consist according to the present invention;
FIG. 2 is a second flow chart of a method for testing the running resistance of a train under a virtual consist according to the present invention;
FIG. 3 is a schematic flow chart of acquiring target train data provided by the invention;
FIG. 4 is a schematic flow chart of determining the running resistance of a train at different moments provided by the invention;
FIG. 5 is a flow chart of the test result of outputting the train running resistance provided by the invention;
fig. 6 is a schematic view of a scenario of a virtual marshalling train provided by the present invention during operation;
FIG. 7 is a third flow chart of a method for testing the running resistance of a train under a virtual consist according to the present invention;
FIG. 8 is a schematic structural diagram of a device for testing the running resistance of a train under a virtual consist provided by the invention;
fig. 9 is a schematic structural diagram of an electronic device provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The urban rail virtual grouping technology can realize collaborative operation and grouping operation among multiple trains based on an advanced communication and control system, and in the urban rail traffic system, the virtual grouping technology can improve the transportation capacity of a line, reduce the spacing among vehicles and realize train grouping and scheduling through joint control. The virtual marshalling technology has important application value in the urban rail traffic field, can reduce the system construction and operation cost, and improves the operation safety and punctuality of the train.
However, in the prior art, the lack of a method and a device for acquiring the running resistance of a virtual marshalling train section of a urban rail relatively results in the lack of an effective means for acquiring and analyzing the running resistance data of the train section, so that the rationality and the effectiveness of the cooperative control effect and the parameter adjustment of the virtual marshalling train section cannot be supported, in order to solve the technical problems described above, the present application provides a method, a device, an apparatus and a medium for testing the running resistance of a virtual marshalling train, and fig. 1 is one of flow diagrams of the method for testing the running resistance of a virtual marshalling train provided by the present application, and the method for testing the running resistance of a virtual marshalling train comprises:
and 101, removing gradient operation data corresponding to the gradient state of the train from the train operation data, removing curve operation data of the train in the curve state, and obtaining target train data.
In step 101, if the train is in a gradient state or in a curve state, the judgment of the running resistance of the train in an inactive state is affected due to the gradient resistance and the curve resistance, so that useless data affecting the judgment of the running resistance of the subsequent train needs to be removed first.
Optionally, the train operation data is determined by screening from train initial data according to the train being in a non-traction state, and the train initial data is determined in a preset test scene according to the virtual marshalling train operating in the single train mode.
Optionally, the application aims to judge the influence of the train running resistance on the virtual marshalling train by the train running resistance determined by running the virtual marshalling train in the single train mode, so as to adjust the running parameters of the virtual marshalling train in time.
Step 102, determining running resistance of the train at different moments according to the corresponding train speeds at different moments in the target train data.
In step 102, since the train is under the influence of the running resistance in the running process and is in an inert running state, the train speed corresponding to the train at the subsequent moment is directly affected, and since the application collects the whole process data of the running of the train in the test scene, the running speed of the train can not be always reduced and can float up and down due to the processes of traction, braking and the like, but is in a speed reduction state once in an inert state, the speed of the speed reduction of the train is fast or slow, namely the train acceleration reflects the running resistance of the train, for example, in the speed reduction process of the train, if the running resistance is larger, the train acceleration is larger, and if the running resistance is smaller, the train acceleration is smaller.
The invention provides a method for acquiring the running resistance of a virtual marshalling train section of a urban rail, which aims to solve the problem that the current urban rail virtual marshalling technology lacks a method and a tool for acquiring the running resistance of the virtual marshalling train section, and can accurately and quickly acquire and output the running resistance of the virtual marshalling train single section through a test device by designing test steps and acquiring actual running data of the virtual marshalling train, thereby realizing the acquisition and the result output of the running resistance of the virtual marshalling train single section and filling the technical blank of the section running resistance acquisition under the virtual marshalling train single operation in the field.
And step 103, outputting a test result of the train running resistance according to the running resistance of the train at different moments and a preset running resistance curve.
In step 103, the invention can compare the running resistance of the train at different moments with a preset running resistance curve, so as to determine the test result of the running resistance of the train according to whether the running resistance of the train at different moments is within the preset running resistance curve or the similarity value of the running resistance of the train at different moments and the preset running resistance curve.
Alternatively, during the running of the virtual marshalling train of the urban rail, the interval running cooperative control of the virtual marshalling train belongs to one of key technologies of the virtual marshalling system, so that the accuracy and correctness of the interval running cooperative control effect of the virtual marshalling train are important. Before the virtual marshalling train enters the marshalling operation process, the marshalling train needs to collect and analyze the running resistance data of the single train section, and adjusts the relevant parameters of the cooperative control of the virtual marshalling train section operation based on the data, so that the normal work and the safe operation of the virtual marshalling system are ensured. Therefore, before the virtual marshalling system is safely put into operation, the comprehensive collection and analysis of the running resistance data of the single train section of the virtual marshalling train are necessary.
The invention provides a method, a device, equipment and a medium for testing the running resistance of a virtual marshalling train, which are characterized in that in a preset test scene, train initial data are collected according to the running of the virtual marshalling train in a single train mode, train running data are screened out from the train initial data according to the fact that the train is in a non-traction state, gradient running data and curve running data are removed from the train running data, target train data are obtained, the running resistance of the train at different moments is determined according to the corresponding train speeds at different moments in the target train data, the collection of the running resistance of the virtual marshalling train is realized, the test result of the running resistance of the virtual marshalling train is output according to the running resistance of the train at different moments and a preset running resistance curve, and the test of the running resistance of the virtual marshalling train is realized.
Fig. 2 is a second flow chart of a method for testing the running resistance of a train under a virtual consist, which is provided by the invention, wherein the method further comprises the steps of:
step 201, receiving a traction instruction, and responding to the traction instruction, wherein the traction instruction is used for instructing the virtual marshalling train to apply traction to the train in a single mode.
In step 201, the present invention eliminates gradient running data corresponding to a gradient state of a train from train running data, eliminates curve running data of the train in a curve state, and needs to collect the train running data before acquiring target train data, specifically, the present invention needs to enable the train to be at a maximum running speed, so that continuous traction force application to the train is required to be realized, specifically, a traction instruction is received, and the traction instruction is used for indicating a virtual marshalling train to apply traction force to the train in a single train mode in response to the traction instruction.
And 202, receiving a traction stopping instruction when the speed of the train is greater than or equal to a preset speed, and responding to the traction stopping instruction, wherein the traction stopping instruction is used for indicating to stop applying traction to the train.
In step 202, the present invention continuously applies traction to the train in a single train mode of a preset test scenario until the speed of the train is greater than or equal to a preset speed, and then stops applying traction to the train to make the train in an inert state.
And 203, acquiring train initial data of the train.
In step 203, the present invention, in response to the stop traction command, instructs to stop applying traction to the train and acquires train initial data of the train.
According to the technical scheme of applying traction to the train first and then stopping applying traction to the train, the actual running data of the virtual marshalling train is collected, so that the accurate collection of running resistance of a single train section is realized, more accurate and reliable resistance data is obtained, and more basis support is provided for section cooperative control effect and parameter adjustment of the urban rail virtual marshalling train.
Fig. 3 is a schematic flow chart of acquiring target train data, in which gradient operation data corresponding to a gradient state of a train is removed from train operation data, curve operation data of the train in a curve state is removed, and the acquiring of the target train data includes:
Step 301, determining train position information according to the train operation data.
In step 301, the invention records the train position of the train at different moments during the collection of the train operation data, so that different train operation data are corresponding to different train position information.
Step 302, determining a gradient position section, a curve position section and a target position section in the train position information from preset path parameters of the preset test scene.
In step 302, the present invention generates a preset path parameter according to an actual running condition in the preset test scene in advance, and further determines a corresponding gradient position section, a curve position section and a target position section in the train position information according to the preset path parameter, where the gradient position section is a section when an uphill or a downhill exists, the curve position section is a section when a curve exists, and the target position section is a section when neither a gradient exists nor a curve exists.
And 303, eliminating gradient operation data corresponding to the gradient position section and curve operation data corresponding to the curve position section from the train operation data, and obtaining target train data corresponding to the target position section.
In step 303, the present invention may directly determine the target train data corresponding to the target position section according to the target position section, however, in the actually obtained train operation data, because there is a traction and braking process on the train, there is a large amount of discontinuous operation data in the target train data, in order to reduce the calculation amount and improve the obtaining efficiency, after determining the gradient position section and the curve position section in the train position information, the present invention may determine the gradient operation data corresponding to the gradient position section and the curve operation data corresponding to the curve position section, and then remove the gradient operation data corresponding to the gradient position section and the remaining operation data after the curve operation data corresponding to the curve position section from the train operation data, that is, the target train data corresponding to the target position section.
According to the method, the device and the system, the gradient running data corresponding to the gradient position section and the curve running data corresponding to the curve position section are removed from the train running data, so that the target train data corresponding to the target position section is obtained, the complexity of obtaining the target train data corresponding to the target position section is reduced, and the obtaining efficiency of the target train data is improved; the gradient operation data corresponding to the gradient state of the train is removed from the train operation data, and the curve operation data of the train in the curve state is removed, so that the interference data in the train operation data are accurately removed, and the accuracy of operation resistance calculation is improved.
Fig. 4 is a schematic flow chart of determining running resistance of a train at different moments, where determining the running resistance of the train at different moments according to corresponding train speeds at different moments in the target train data includes:
step 401, dividing the operation time period of the target train data, and determining all target sub-time periods.
In step 401, the target train data includes train data of different operation periods, and the invention may divide the operation period of the target train data by using the target subperiod as a dividing unit, where the target subperiod may be 1 second, 2 seconds, or 5 seconds, etc.
Step 402, averaging all the train speeds in each target subinterval, and determining a train speed average value corresponding to each target subinterval.
In step 402, in the virtual train system, the time period of the present invention is 200s, that is, the train running speed is obtained once every 200s, if the target subinterval is 1 second, the train speeds in five time periods need to be obtained, all the train speeds in each target subinterval are averaged, and the train speed average value corresponding to each target subinterval is determined.
And 403, deriving the average value of the speed of each train corresponding to all the target subintervals, and determining the acceleration of the train at different moments.
In step 403, the average value of each train speed corresponding to all the target subintervals is derived, so as to determine the train acceleration corresponding to each target subinterval, that is, determine the train acceleration of the train at different moments.
Step 404, inputting the train acceleration at different moments to a preset running resistance equation, and obtaining the running resistance at different moments output by the preset running resistance equation;
the preset running resistance equation is determined according to the train acceleration sample data and the train running resistance sample data in a linear fitting mode.
In step 404, according to the invention, through the linear relationship between the train acceleration and the running resistance, after the train acceleration at different moments is determined, the linear coefficient is determined and the preset running resistance equation is constructed according to the train acceleration sample data and the train running resistance sample data in a linear fitting manner, and then the train acceleration at different moments is input into the preset running resistance equation, so that the running resistance at different moments output by the preset running resistance equation is obtained.
The invention accurately realizes the rapid conversion from the speed of the train to the acceleration of the train and then to the running resistance of the train through the speed differential derivation and the implementation and application of the preset running resistance equation, saves a great deal of time and labor cost and improves the test efficiency.
FIG. 5 is a flow chart of the output of the test results of the train running resistance provided by the invention, wherein the preset running resistance curve comprises a preset running resistance upper limit curve and a preset running resistance lower limit curve;
outputting a test result of the train running resistance according to the running resistance of the train at different moments and a preset running resistance curve, wherein the test result comprises the following steps:
step 501, outputting a test result of the train running resistance to pass under the condition that the running resistance of the train at different moments is between a preset running resistance upper limit curve and a preset running resistance lower limit curve.
In step 501, the preset running resistance curve is an ideal curve designed by analyzing the on-site situation of a test scene when the virtual marshalling train runs in the single train mode, and the invention aims to control the running resistance of the train at different moments in the ideal curve, specifically, the preset running resistance curve comprises a preset running resistance upper limit curve and a preset running resistance lower limit curve, namely, the running resistance of the train at any moment is required to be ensured to be between the preset running resistance upper limit curve and the preset running resistance lower limit curve, and then the test result of the running resistance of the train is output to pass.
And 502, otherwise, outputting a test result of the train running resistance to be failed.
In step 502, if the running resistance of the train at any moment is outside the preset running resistance upper limit curve and the preset running resistance lower limit curve, the test result of the running resistance of the train is output as not passing, and at this time, the running parameters of the train in the virtual marshalling train need to be adjusted according to the test result.
According to the invention, through collecting and testing the running resistance of the train under the virtual marshalling, under the condition that the running resistance of the train at any moment is determined to be outside the preset running resistance upper limit curve and the preset running resistance lower limit curve, the running parameters of the train in the virtual marshalling train are adjusted, so that more basis support is provided for the interval cooperative control effect and parameter adjustment of the urban rail virtual marshalling train, and the normal work and safe operation of a virtual marshalling system are ensured.
Optionally, after outputting the test result of the train running resistance as not passing, the method further comprises:
adjusting the operation parameters of the virtual marshalling train in a marshalling mode;
and determining train initial data again according to the running of the virtual marshalling train in the single train mode in the preset test scene so as to output a test result of the running resistance of the train until the test result of the running resistance of the train is output to pass.
Optionally, after the test result of the train running resistance is outputted, the running parameters of the virtual marshalling train in the marshalling mode are adjusted again, the test scene is set again, and the test scene is started, and fig. 6 is a schematic diagram of the virtual marshalling train in the running process, as shown in fig. 6, in the running process of the train from station 3 to station 2, steps 101 to 103 are executed again by applying the same test scene, the test result of the train running resistance is outputted until the test result of the train running resistance is outputted, and the application of the invention has important significance for acquisition, result output, algorithm optimization and parameter adjustment of the single train section running resistance of the urban rail virtual marshalling train, and provides a reliable technical foundation for further research and development of virtual marshalling train section running control, optimization algorithm and other aspects.
Optionally, before removing gradient operation data corresponding to the gradient state of the train from the train operation data and removing curve operation data of the train in the curve state, the method further includes:
determining traction operation data corresponding to a traction period in the initial data of the train, and determining braking operation data corresponding to a braking period;
And eliminating the traction operation data and the braking operation data from the initial train data to obtain the train operation data.
Optionally, the invention can determine traction operation data corresponding to a traction period and braking operation data corresponding to a braking period through a traction instruction, a traction stopping instruction, a braking instruction and a braking stopping instruction received by the system in a train operation stage, and remove the traction operation data and the braking operation data from train initial data, so as to realize preprocessing of the train initial data and finally obtain the train operation data. In order to obtain the running resistance of the train in the inert state, the invention eliminates the related data which can influence the running resistance calculation, ensures the accuracy of the train running resistance calculation, overcomes the defect of larger error in the aspect of the running resistance calculation in the current urban rail virtual marshalling technology, has the characteristics of accuracy, high reliability, high efficiency and the like in the calculation process, and provides reliable technical support and guarantee for the application of the urban rail virtual marshalling technology.
FIG. 7 is a third flow chart of the method for testing the running resistance of the virtually grouped train, which is provided by the invention, the invention provides a test device, which comprises a data acquisition module, a data analysis module, a data calculation module and a test result output module, wherein the data acquisition module is used for acquiring running basic data information of the virtually grouped train in real time; the data analysis module is used for preprocessing, analyzing and screening the acquired data; the data calculation module is used for comparing and calculating data; and the test result output module is used for generating a final test result for further analysis and evaluation.
Optionally, setting a test scene, starting the test scene, starting a train unit to be grouped to operate in a single train mode in the data acquisition module, manually applying traction force to the train, judging the speed, and continuously applying traction force to the train when the speed of the train does not reach the maximum value; when the train speed reaches the maximum value, the traction handle returns to the zero position, so that the train enters an inert state, and the related data of the train operation are collected and analyzed. Optionally, the test device is connected to the record board of the vehicle-mounted equipment of the virtual marshalling train, and the test device can normally receive actual operation data sent by the vehicle-mounted equipment.
Optionally, classifying and screening collected data related to train operation in a data analysis module, wherein the collected data is required to be subjected to data extraction and classification in the data analysis process, if the train is in other states which are not inert states, invalid data is determined, at the moment, the collected data is required to be collected again, if the train is in an inert state, gradient judgment is performed, and if the train is in an ascending or descending state, the invalid data is determined; when the train is in a non-gradient running state, curve judgment is carried out, and when the train is in a curve running state, invalid data is determined; when the train is in a non-curve running state, the train speed information is further extracted, when the train is in an idle running state and runs under a non-gradient and runs under a non-curve, data is output to the data calculation module, otherwise, invalid data is judged, the data is returned to a data acquisition state, and the data is continuously acquired.
Optionally, the data calculation module calculates acceleration of the train through a speed differential algorithm, determines running resistance of the train according to the acceleration of the train, and outputs a calculated result to the test result output module.
Optionally, the test result output module generates a test result according to the train running resistance, the test result can be output in a visual mode, the test result is convenient for a tester to further analyze and judge, the tester can evaluate the test result according to the comparison between the output result and the expected index effect, the virtual marshalling running parameters are manually evaluated and modified, the test scene is set again, and the train running resistance under the virtual marshalling is acquired and analyzed again.
The invention can accurately collect the running resistance data of the virtual marshalling train section in real time, is beneficial to improving the safety and reliability of virtual marshalling operation of the urban rail train, thereby promoting the research and development of the urban rail train in the virtual marshalling technology, providing reliable technical support for the application of the virtual marshalling technology of the urban rail train and promoting the wide application of the virtual marshalling technology in the urban rail traffic system.
Fig. 8 is a schematic structural diagram of a device for testing running resistance of a virtually grouped train according to the present invention, where the device for testing running resistance of a virtually grouped train includes an obtaining unit 1, where the obtaining unit is configured to remove gradient running data corresponding to a gradient state of the train from the train running data, and remove curve running data of the train in a curve state, to obtain target train data, and the working principle of the obtaining unit 1 may refer to the foregoing step 101 and is not repeated herein.
The device for testing the running resistance of the train under the virtual marshalling further comprises a determining unit 2, the determining unit is configured to determine the running resistance of the train at different moments according to the corresponding train speeds at different moments in the target train data, and the working principle of the determining unit 2 can refer to the foregoing step 102 and is not repeated herein.
The device for testing the running resistance of the train in the virtual marshalling further comprises an output unit 3, wherein the output unit is used for outputting a test result of the running resistance of the train according to the running resistance of the train at different moments and a preset running resistance curve, and the working principle of the output unit 3 can refer to the step 103 and is not repeated herein.
The train operation data is screened and determined from initial train data according to the fact that the train is in a non-traction state;
the train initial data is determined in a preset test scene according to the virtual marshalling train running in the single train mode.
The invention provides a method, a device, equipment and a medium for testing the running resistance of a virtual marshalling train, which are characterized in that in a preset test scene, train initial data are collected according to the running of the virtual marshalling train in a single train mode, train running data are screened out from the train initial data according to the fact that the train is in a non-traction state, gradient running data and curve running data are removed from the train running data, target train data are obtained, the running resistance of the train at different moments is determined according to the corresponding train speeds at different moments in the target train data, the collection of the running resistance of the virtual marshalling train is realized, the test result of the running resistance of the virtual marshalling train is output according to the running resistance of the train at different moments and a preset running resistance curve, and the test of the running resistance of the virtual marshalling train is realized.
Fig. 9 is a schematic structural diagram of an electronic device provided by the present invention. As shown in fig. 9, the electronic device may include: processor 910, communication interface (Communications Interface), memory 930, and communication bus 940, wherein processor 910, communication interface 920, and memory 930 communicate with each other via communication bus 940. The processor 910 may invoke logic instructions in the memory 930 to perform a method of testing the running resistance of a train under a virtual consist, the method comprising: removing gradient operation data corresponding to the gradient state of the train from the train operation data, removing curve operation data of the train in a curve state, and obtaining target train data; determining running resistance of the train at different moments according to the corresponding train speeds at different moments in the target train data; outputting a test result of the train running resistance according to the running resistance of the train at different moments and a preset running resistance curve; the train operation data is screened and determined from initial train data according to the fact that the train is in a non-traction state; the train initial data is determined in a preset test scene according to the virtual marshalling train running in the single train mode.
Further, the logic instructions in the memory 930 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, the computer program product comprising a computer program, the computer program being storable on a non-transitory computer readable storage medium, the computer program, when executed by a processor, being capable of executing a method of testing a train running resistance under a virtual consist provided by the above methods, the method comprising: removing gradient operation data corresponding to the gradient state of the train from the train operation data, removing curve operation data of the train in a curve state, and obtaining target train data; determining running resistance of the train at different moments according to the corresponding train speeds at different moments in the target train data; outputting a test result of the train running resistance according to the running resistance of the train at different moments and a preset running resistance curve; the train operation data is screened and determined from initial train data according to the fact that the train is in a non-traction state; the train initial data is determined in a preset test scene according to the virtual marshalling train running in the single train mode.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform a method of testing a resistance to running of a train under a virtual consist provided by the above methods, the method comprising: removing gradient operation data corresponding to the gradient state of the train from the train operation data, removing curve operation data of the train in a curve state, and obtaining target train data; determining running resistance of the train at different moments according to the corresponding train speeds at different moments in the target train data; outputting a test result of the train running resistance according to the running resistance of the train at different moments and a preset running resistance curve; the train operation data is screened and determined from initial train data according to the fact that the train is in a non-traction state; the train initial data is determined in a preset test scene according to the virtual marshalling train running in the single train mode.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for testing the running resistance of a train under a virtual consist, comprising:
removing gradient operation data corresponding to the gradient state of the train from the train operation data, removing curve operation data of the train in a curve state, and obtaining target train data;
determining running resistance of the train at different moments according to the corresponding train speeds at different moments in the target train data;
outputting a test result of the train running resistance according to the running resistance of the train at different moments and a preset running resistance curve;
the train operation data is screened and determined from initial train data according to the fact that the train is in a non-traction state;
the train initial data is determined in a preset test scene according to the virtual marshalling train running in the single train mode.
2. The method for testing the running resistance of a virtually grouped train according to claim 1, wherein before removing gradient running data corresponding to a gradient state of the train from the train running data and removing curve running data of the train in a curve state, the method further comprises:
Receiving a traction instruction and responding to the traction instruction, wherein the traction instruction is used for instructing the virtual marshalling train to apply traction to the train in a single train mode;
receiving a traction stopping instruction under the condition that the speed of the train is greater than or equal to a preset speed, and responding to the traction stopping instruction, wherein the traction stopping instruction is used for indicating to stop applying traction to the train;
and acquiring train initial data of the train.
3. The method for testing the running resistance of the train under the virtual consist according to claim 1, wherein the steps of removing the slope running data corresponding to the slope state of the train from the train running data, removing the curve running data of the train in the curve state, and obtaining the target train data include:
determining train position information according to the train operation data;
determining a gradient position section, a curve position section and a target position section in the train position information from preset path parameters of the preset test scene;
and eliminating gradient operation data corresponding to the gradient position section and curve operation data corresponding to the curve position section from the train operation data, and obtaining target train data corresponding to the target position section.
4. The method for testing the running resistance of the train under the virtual consist according to claim 1, wherein the determining the running resistance of the train under different moments according to the corresponding train speeds under different moments in the target train data comprises:
dividing the operation time period of the target train data, and determining all target sub-time periods;
averaging all train speeds in each target subinterval, and determining a train speed average value corresponding to each target subinterval;
deriving the average value of the speed of each train corresponding to all the target subintervals, and determining the acceleration of the train at different moments;
inputting train acceleration at different moments to a preset running resistance equation, and obtaining running resistance at different moments output by the preset running resistance equation;
the preset running resistance equation is determined according to the train acceleration sample data and the train running resistance sample data in a linear fitting mode.
5. The method for testing the running resistance of a virtually grouped train according to claim 4, wherein the preset running resistance curve includes a preset running resistance upper limit curve and a preset running resistance lower limit curve;
Outputting a test result of the train running resistance according to the running resistance of the train at different moments and a preset running resistance curve, wherein the test result comprises the following steps:
outputting a test result of the train running resistance to pass under the condition that the running resistance of the train at different moments is between a preset running resistance upper limit curve and a preset running resistance lower limit curve;
otherwise, outputting the test result of the train running resistance as not passing.
6. The method for testing the running resistance of a train under a virtual consist according to claim 5, wherein after outputting the test result of the running resistance of the train as failed, the method further comprises:
adjusting the operation parameters of the virtual marshalling train in a marshalling mode;
and determining train initial data again according to the running of the virtual marshalling train in the single train mode in the preset test scene so as to output a test result of the running resistance of the train until the test result of the running resistance of the train is output to pass.
7. The method for testing the running resistance of a virtually grouped train according to claim 1, wherein before the gradient running data corresponding to the gradient state of the train is removed from the train running data and the curve running data of the train in the curve state is removed, the method further comprises:
Determining traction operation data corresponding to a traction period in the initial data of the train, and determining braking operation data corresponding to a braking period;
and eliminating the traction operation data and the braking operation data from the initial train data to obtain the train operation data.
8. A test device for the running resistance of a train under a virtual consist, comprising:
the acquisition unit is used for removing gradient operation data corresponding to the gradient state of the train from train operation data, removing curve operation data of the train in a curve state and acquiring target train data;
the determining unit is used for determining the running resistance of the train at different moments according to the corresponding train speeds at different moments in the target train data;
the output unit is used for outputting a test result of the running resistance of the train according to the running resistance of the train at different moments and a preset running resistance curve;
the train operation data is screened and determined from initial train data according to the fact that the train is in a non-traction state;
the train initial data is determined in a preset test scene according to the virtual marshalling train running in the single train mode.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor, when executing the program, implements a method of testing the running resistance of a train under a virtual consist as claimed in any one of claims 1 to 7.
10. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the method of testing the running resistance of a virtual consist train as claimed in any one of claims 1 to 7.
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| CN202310995073.8A CN117227802A (en) | 2023-08-08 | 2023-08-08 | Method, device, equipment and medium for testing running resistance of train under virtual marshalling |
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| CN202310995073.8A CN117227802A (en) | 2023-08-08 | 2023-08-08 | Method, device, equipment and medium for testing running resistance of train under virtual marshalling |
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