Cable screening method, device and equipment for service capability evaluation and medium

Abstract

The embodiment of the invention provides a cable screening method and device for service capability evaluation, equipment and a medium. The method comprises the following steps: acquiring state parameters of a cable of the railway vehicle; for each cable, determining a working condition grade of the cable based on a preset label system according to the state parameter of the cable; wherein the preset label system comprises label information and corresponding evaluation rules, the label information is used for describing the states of the cable under different influence factors, the label information comprises a voltage grade label, a thermal stress label, an operation environment label and a mechanical stress label, and the evaluation rules are used for positioning the quantitative grade of the label information; the working condition grade represents the severe degree of the cable service working condition; determining a target cable from the plurality of cables according to the working condition grade of each cable; wherein the target cable is used for determining whether each cable of the railway vehicle has the service capability or not. The method is used for achieving the effect of improving the precision of evaluating the service capability of the global cable of the railway vehicle.

Description

Technical Field

[0001] This application relates to the field of computer technology, and in particular to a cable screening method, apparatus, equipment and medium for evaluating service capability. Background Technology

[0002] With the rapid development of urban rail transit networks, the operational scale of urban rail vehicles (also known as rail vehicles) is expanding year by year. As a core component of the electrical system of urban rail vehicles, cables undertake key functions such as power transmission, signal control, and equipment power supply.

[0003] Due to the large number of cables in urban rail vehicles, their complex wiring, and the fact that most are pre-buried in cable trays or conduits, traditional manual inspections and random sampling tests are insufficient to comprehensively cover all cables, making it impossible to scientifically assess their service capabilities. Furthermore, conducting tests on cables to determine their service capabilities is prohibitively expensive, limiting the feasibility of large-scale evaluations.

[0004] Therefore, there is an urgent need for a solution that can improve the accuracy of evaluating the service capability of the global cable of rail vehicles. Summary of the Invention

[0005] The cable screening method, apparatus, equipment, and medium for service capability evaluation provided in this application are intended to improve the accuracy of evaluating the service capability of all cables in rail vehicles.

[0006] In a first aspect, embodiments of this application provide a cable screening method for service capability evaluation, comprising:

[0007] Obtain the status parameters of the cables of the rail vehicle; where there are multiple cables.

[0008] For each cable, the operating condition level is determined based on the cable's status parameters and a pre-defined labeling system. The pre-defined labeling system includes label information and its corresponding evaluation rules. The label information describes the cable's status under different influencing factors and includes voltage level labels, thermal stress labels, operating environment labels, and mechanical stress labels. The evaluation rules are used to determine the quantitative level of the label information. The operating condition level characterizes the severity of the cable's service conditions.

[0009] Based on the operating condition level of each cable, a target cable is determined from multiple cables; the target cable is used to determine whether each cable of the rail vehicle is capable of service.

[0010] In an optional example, the cable's operating condition level is determined based on the cable's condition parameters and a preset labeling system, including:

[0011] Based on the rated voltage in the cable's condition parameters, and according to the evaluation rules corresponding to the voltage level label, determine the first label value corresponding to the voltage level label;

[0012] Based on the ambient temperature, laying type, and number of parallel cables in the cable's condition parameters, and according to the evaluation rules corresponding to the thermal stress label, the second label value corresponding to the thermal stress label is determined.

[0013] Based on the acid-base information, ultraviolet information, and ozone information in the cable's condition parameters, and based on the evaluation rules corresponding to the operating environment label, the third label value corresponding to the operating environment label is determined.

[0014] Based on the appearance information in the cable's condition parameters, and according to the evaluation rules corresponding to the mechanical stress label, the fourth label value corresponding to the mechanical stress label is determined.

[0015] The operating condition level of the cable is determined based on the first label value, the second label value, the third label value, and the fourth label value.

[0016] In an optional example, the second tag value corresponding to the thermal stress tag is determined based on the ambient temperature, laying type, and number of parallel cables in the cable's condition parameters, including:

[0017] Obtain the preset temperature threshold and the preset ambient reference temperature;

[0018] The first coefficient is determined based on the temperature threshold, the preset environmental reference temperature, and the environmental temperature in the cable's status parameters; the first coefficient characterizes the degree to which the cable is affected by temperature during service.

[0019] The second coefficient is determined based on the laying type and the number of parallel cables; the second coefficient characterizes the degree to which the cable is affected by the laying conditions and cable arrangement during its service life.

[0020] The reduction factor is determined based on the first and second coefficients; the reduction factor characterizes the degree of influence of thermal stress on the cable during service.

[0021] The second label value corresponding to the thermal stress label is determined based on the conversion factor.

[0022] In an optional example, the target cable is determined from multiple cables based on their operating condition class, including:

[0023] The cables are sorted according to their operating condition level, and at least one cable with the highest operating condition level is selected as the target cable.

[0024] In an optional example, after determining the target cable from multiple cables based on the operating condition class of each cable, the process includes:

[0025] Perform pre-set test treatments on the target cable and record the test results of the target cable;

[0026] If the test results of the target cable meet the preset conditions, then it is determined that each cable of the rail vehicle is capable of service.

[0027] In an optional example, the preset test treatment includes a first test treatment and a second test treatment. The first test treatment is used to verify whether the basic performance of the cable meets the preset standard, and the second test treatment is used to determine the remaining thermal aging life of the cable. The preset test treatment is performed on the target cable, and the test results of the target cable are recorded, including:

[0028] The target cable undergoes a first test treatment, and the basic performance status of the target cable is recorded. The target cable undergoes a second test treatment, and the remaining thermal aging life of the target cable is recorded.

[0029] The basic performance status and remaining thermal aging life are determined as the test results for the target cable.

[0030] In an optional example, if the test results of the target cable meet preset conditions, then multiple cables of the rail vehicle are determined to be serviceable, including:

[0031] If the basic performance status of the target cable in the test results meets the preset standard value, and the remaining thermal aging life of the target cable is greater than or equal to the preset service life, then it is determined that multiple cables of the rail vehicle are capable of service.

[0032] Secondly, embodiments of this application provide a cable screening device for service capability evaluation, comprising:

[0033] The acquisition module is used to acquire the status parameters of the cables of the rail vehicle; there are multiple cables.

[0034] The first determining module is used to determine the operating condition level of each cable based on the cable's state parameters and a preset labeling system. The preset labeling system includes label information and its corresponding evaluation rules. The label information describes the state of the cable under different influencing factors and includes voltage level labels, thermal stress labels, operating environment labels, and mechanical stress labels. The evaluation rules are used to determine the quantitative level of the label information. The operating condition level characterizes the severity of the cable's service conditions.

[0035] The second determination module is used to determine the target cable from multiple cables based on the operating condition level of each cable; wherein the target cable is used to determine whether each cable of the rail vehicle is capable of service.

[0036] Thirdly, embodiments of this application provide an electronic device, including: a memory and a processor;

[0037] The memory stores the instructions that the computer executes;

[0038] The processor executes computer execution instructions stored in memory, causing the processor to perform the first aspect and / or various possible implementations of the first aspect as described above.

[0039] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the first aspect and / or various possible implementations of the first aspect.

[0040] Fifthly, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the first aspect and / or various possible implementations of the first aspect.

[0041] The cable screening method, apparatus, equipment, and medium for service capability evaluation provided in this application obtain the state parameters of the cables of a rail vehicle. Further, for each cable, based on the state parameters and a preset tagging system, the operating condition level of the cable is determined. Further, based on the operating condition level of each cable, a target cable is determined from multiple cables. The preset tagging system includes tag information and corresponding evaluation rules. The tag information describes the state of the cable under different influencing factors and includes voltage level tags, thermal stress tags, operating environment tags, and mechanical stress tags. The evaluation rules are used to determine the quantification level of the tag information. The operating condition level characterizes the severity of the cable's service conditions. The target cable is used to determine whether each cable of the rail vehicle has the capability to serve. The method of this application considers the influence of multiple dimensions on the cable during actual service and quantifies them into tags, namely voltage level tags, thermal stress tags, operating environment tags, and mechanical stress tags, thereby determining the operating condition level characterizing the severity of the cable's service conditions to screen out representative target cables. This achieves the effect of determining the service capability of each cable of the rail vehicle by testing only the target cable. The method described in this application achieves the effect of improving the accuracy of evaluating the service capability of the overall cable of a rail vehicle. Attached Figure Description

[0042] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0043] Figure 1 A flowchart illustrating the cable screening method for service capability evaluation provided in this application. Figure 1 ;

[0044] Figure 2 A flowchart illustrating the cable screening method for service capability evaluation provided in this application. Figure 2 ;

[0045] Figure 3a A schematic diagram of the cable laying provided in this application. Figure 1 ;

[0046] Figure 3b A schematic diagram of the cable laying provided in this application. Figure 2 ;

[0047] Figure 3c Schematic diagram three showing the cable laying method provided in this application;

[0048] Figure 3d A schematic diagram of the cable laying provided in this application. Figure 4 ;

[0049] Figure 3e A schematic diagram of the cable laying provided in this application. Figure 5 ;

[0050] Figure 3f A schematic diagram of the cable laying provided in this application. Figure 6 ;

[0051] Figure 4 A flowchart illustrating the service capability evaluation method provided in this application;

[0052] Figure 5 A schematic diagram of the cable screening device for service capability evaluation provided in this application;

[0053] Figure 6 A schematic diagram of the structure of the electronic device provided in this application.

[0054] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0055] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0056] With the rapid development of urban rail transit networks, the operational scale of urban rail vehicles (also known as rail vehicles) is expanding year by year. As a core component of the electrical system of urban rail vehicles, cables undertake key functions such as power transmission, signal control, and equipment power supply.

[0057] Due to the large number of cables in urban rail vehicles, their complex wiring, and the fact that most are pre-buried in cable trays or conduits, traditional manual inspections and random sampling tests are insufficient to comprehensively cover all cables, making it impossible to scientifically assess their service capabilities. Furthermore, conducting tests on cables to determine their service capabilities is prohibitively expensive, limiting the feasibility of large-scale evaluations.

[0058] Therefore, there is an urgent need for a solution that can improve the accuracy of evaluating the service capability of the global cable of rail vehicles.

[0059] The method in this application considers the multi-dimensional influence of factors on cables during actual service and quantifies them into labels, namely voltage level labels, thermal stress labels, operating environment labels, and mechanical stress labels. This allows for the determination of service condition levels characterizing the severity of cable service conditions, enabling the selection of representative target cables. By testing only the target cables, the serviceability of each cable in a rail vehicle can be determined. The method in this application improves the accuracy of evaluating the overall serviceability of rail vehicle cables.

[0060] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0061] Figure 1 A flowchart illustrating the cable screening method for service capability evaluation provided in this application. Figure 1 ,like Figure 1 As shown, the method includes:

[0062] S101. Obtain the status parameters of the cables of the rail vehicle; where there are multiple cables.

[0063] S102. For each cable, based on the cable's status parameters and a preset labeling system, determine the cable's operating condition level. The preset labeling system includes label information and its corresponding evaluation rules. The label information describes the cable's status under different influencing factors and includes voltage level labels, thermal stress labels, operating environment labels, and mechanical stress labels. The evaluation rules are used to determine the quantitative level of the label information. The operating condition level characterizes the severity of the cable's service conditions.

[0064] S103. Based on the operating condition level of each cable, determine the target cable from multiple cables; wherein, the target cable is used to determine whether each cable of the rail vehicle is capable of service.

[0065] In step S101, the rail vehicle can be an urban rail vehicle, which is a vehicle used in urban rail transit. Rail vehicles can include, but are not limited to, subway trains, light rail vehicles, and trams. The vehicle can be located on an operating line, in a maintenance depot, or at a maintenance platform.

[0066] It should be understood that the cables of rail vehicles undertake key functions such as power transmission, signal control, and equipment power supply, and there are multiple cables.

[0067] Cable condition parameters can refer to the raw data used for subsequent quantitative scoring (i.e., determining the cable's operating condition level). For example, cable condition parameters may include, but are not limited to, rated voltage, ambient temperature, laying type, number of parallel cables, acid and alkali information, ultraviolet information, ozone information, and appearance information.

[0068] It should be understood that the state parameters of the cable can be directly measured or calculated by sensors (for example, ambient temperature can be measured by temperature sensors deployed in the cable trays near the cable, acid and alkali information can be measured by pH sensors deployed on the cable surface, ultraviolet information can be measured by ultraviolet sensors deployed on the cable surface, ozone information can be measured by ozone sensors deployed on the cable surface, and appearance information can be identified by visual inspection sensors deployed on the cable surface). Alternatively, they can be static parameters that can be recorded in advance before the cable enters service and stored in a preset database (for example, rated voltage, laying type, number of parallel cables), and can be obtained from the preset database.

[0069] In step S102, the preset label system may refer to a quantitative evaluation framework that includes at least one dimension. The preset label system includes label information and its corresponding evaluation rules.

[0070] Tagging information can refer to discrete or continuous quantitative indicators used to convert the physical or chemical state of a cable under different influencing factors into sortable and comparable levels. Tagging information includes voltage level tags, thermal stress tags, operating environment tags, and mechanical stress tags. Evaluation rules can refer to algorithms, thresholds, or lookup table methods that map state parameters to the actual values ​​of tags.

[0071] The voltage rating label represents the voltage level of the cable. For example, the voltage rating label can be represented as A1, A2, or A3. A1 represents a high-voltage cable, with the evaluation rule being that the cable's rated voltage is greater than or equal to a preset first voltage threshold (e.g., DC 1500 volts); A2 represents a medium-voltage cable, with the evaluation rule being that the cable's rated voltage is equal to a preset second voltage threshold (e.g., DC 600 volts or AC 380 volts); and A3 represents a low-voltage cable, with the evaluation rule being that the cable's rated voltage is less than or equal to a preset third voltage threshold (e.g., DC 110 volts). It should be understood that the smaller the voltage rating value represented by the label, the greater its impact on the rail vehicle system. For example, when the voltage rating label is A1, its impact on the rail vehicle system is relatively the greatest.

[0072] Thermal stress labels can be used to quantify the equivalent thermal stress that cable insulation layers bear in a real environment. For example, based on the ambient temperature, laying type, and number of parallel cables, the equivalent thermal stress of the cable can be determined. The equivalent thermal stress of each cable is then arranged and divided in descending order to obtain the range to which the thermal stress label belongs. The thermal stress labels can be represented as X1, X2, and X3. The smaller the level value represented by the thermal stress label, the greater its impact on the rail vehicle system. For example, when the thermal stress label is X1, its impact on the rail vehicle system is relatively the greatest.

[0073] Mechanical stress labels are used to quantify the mechanical fatigue risk of cables caused by bending, swaying, wrinkling, and stretching. For example, mechanical stress labels can be represented as Y1, Y2, and Y3. For instance, judging the presence of four factors (bending, swaying, wrinkling, and stretching) in a cable, if the cable exhibits four of these factors, the mechanical stress label is Y1; if it exhibits three or two of these factors, the label is Y2; and if it exhibits one or zero of these factors, the label is Y3. The lower the value of the mechanical stress label, the greater its impact on the rail vehicle system. For example, a mechanical stress label of Y1 indicates the greatest impact on the rail vehicle system.

[0074] Operating environment labels quantify the degree of aging of cables due to factors such as chemical corrosion, ultraviolet radiation, and ozone. For example, operating environment labels can be represented as Z1, Z2, and Z3. For instance, the label is determined by assessing the presence of five factors: direct sunlight, rainwater, condensation, ozone, acids / alkalis, and oil. If the cable exhibits five or four of these factors, its operating environment label is Z1; if it exhibits three or two, it is Z2; and if it exhibits one or zero, it is Z3. The lower the value of the operating environment label, the greater its impact on the rail vehicle system. For example, an operating environment label of Z1 has the greatest impact on the rail vehicle system.

[0075] It should be noted that voltage level labels, thermal stress labels, mechanical stress labels, and operating environment labels can also be represented in other forms, and the number of labels can be more than 3. For example, thermal stress labels can also be represented as X1, X2, X3, X4, and X5, mechanical stress labels can also be represented as Y1, Y2, Y3, and Y4, and operating environment labels can be represented as Z1, Z2, Z3, and Z4. There is no limit to the number of quantitative levels of label information. The number of quantitative levels of label information can be pre-determined by the staff based on the actual situation on site.

[0076] Furthermore, the cable's operating condition level can be obtained; for example, the cable's operating condition level is a quantified level of the tag information.

[0077] For example, the operating condition level of cable 1 is represented as [A1,X2,Y1,Z1], the operating condition level of cable 2 is represented as [A1,X1,Y2,Z2], and the operating condition level of cable 3 is represented as [A3,X2,Y3,Z2].

[0078] Among them, the value of the label information quantification level of cable 1 is relatively the smallest, indicating that its impact on the rail vehicle system is relatively the largest and that the severity of the cable's service conditions is the most severe. Therefore, cable 1 can be used as the target cable to represent all the cables of the rail vehicle, in order to test the target cable and determine whether each cable of the rail vehicle has the service capability.

[0079] It is understandable that by quantifying at least four dimensions of the label information, a comprehensive cable condition level can be obtained. Then, according to the rule that the smaller the level value, the higher the severity, at least one cable with the relatively smallest condition level can be selected as the target cable. This allows for the evaluation of the service capability of rail vehicle cables using the smallest sample, significantly reducing test costs while ensuring improved accuracy in evaluating the overall service capability of rail vehicle cables.

[0080] The method in this application considers the multi-dimensional influence of factors on cables during actual service and quantifies them into labels, namely voltage level labels, thermal stress labels, operating environment labels, and mechanical stress labels. This allows for the determination of service condition levels characterizing the severity of cable service conditions, enabling the selection of representative target cables. By testing only the target cables, the serviceability of each cable in a rail vehicle can be determined. The method in this application improves the accuracy of evaluating the overall serviceability of rail vehicle cables.

[0081] Figure 2 A flowchart illustrating the cable screening method for service capability evaluation provided in this application. Figure 2 ,like Figure 2 As shown, in this embodiment... Figure 1 Based on the examples, a cable screening method for service capability evaluation is described in detail, which includes:

[0082] S201. Obtain the status parameters of the cables of the rail vehicle; where there are multiple cables.

[0083] S202. Based on the rated voltage in the cable's status parameters, determine the first label value corresponding to the voltage level label according to the evaluation rules corresponding to the voltage level label.

[0084] Rated voltage can refer to the nominal operating voltage specified in the design and manufacture of the cable.

[0085] For example, the first tag value corresponding to the voltage level tag can be obtained by looking up a preset table 1:

[0086] Table 1:

[0087]

[0088] For example, if the rated voltage of the cable is 52 volts DC, then the first label value corresponding to the voltage rating label of the cable is A3.

[0089] S203. Based on the ambient temperature, laying type, and number of parallel cables in the cable's condition parameters, determine the second label value corresponding to the thermal stress label according to the evaluation rules corresponding to the thermal stress label.

[0090] Among them, ambient temperature can refer to the steady-state temperature statistics of the cable surface or the air zone adjacent to it within a preset time period.

[0091] The number of parallel cables can refer to the total number of cables that are laid in parallel with the cable and carry current simultaneously in the same cable tray, conduit, or corrugated pipe.

[0092] Cable laying type can refer to the relative positional relationship between the cable and the surrounding air or wall surface. There are various cable laying methods; for example... Figure 3a A schematic diagram of the cable laying provided in this application. Figure 1 ; Figure 3b A schematic diagram of the cable laying provided in this application. Figure 2 ; Figure 3c Schematic diagram three showing the cable laying method provided in this application; Figure 3d A schematic diagram of the cable laying provided in this application. Figure 4 ; Figure 3e A schematic diagram of the cable laying provided in this application. Figure 5 ; Figure 3f A schematic diagram of the cable laying provided in this application. Figure 6 .

[0093] like Figure 3a As shown, the cable is laid in the air;

[0094] like Figure 3b As shown, the cable is laid in a single layer on the cable tray;

[0095] like Figure 3c As shown, the cable is laid in multiple layers on the cable tray; for example, multiple layers means at least 3 layers.

[0096] like Figure 3d As shown, the cable is laid on the side wall surface;

[0097] like Figure 3e As shown, the cable is laid on the lower surface of the ceiling.

[0098] like Figure 3f As shown, the cable is laid in a closed manner, for example, in a closed cable tray or conduit.

[0099] Where D1 or D2 represents the diameter of the cable, and A represents the spacing of the cable trays.

[0100] In one alternative implementation, step S203 may include:

[0101] S2031. Obtain the preset temperature threshold and the preset ambient reference temperature.

[0102] S2032. Determine the first coefficient based on the temperature threshold, the preset environmental reference temperature, and the environmental temperature in the cable's status parameters; the first coefficient characterizes the degree to which the cable is affected by temperature during service.

[0103] S2033. Determine the second coefficient based on the laying type and the number of parallel cables; wherein, the second coefficient characterizes the degree to which the cable is affected by the laying conditions and cable arrangement during service.

[0104] S2034. Determine the conversion factor based on the first and second coefficients; whereby the conversion factor characterizes the degree of influence of thermal stress on the cable during service.

[0105] S2035. Determine the second label value corresponding to the thermal stress label based on the conversion factor.

[0106] The preset temperature threshold can refer to the highest continuous operating temperature of the conductor allowed by the cable insulation material, which is determined by the cable material.

[0107] In one possible implementation, the preset temperature threshold is set according to the European standard series followed by the cable. For example, the cables are classified into the EN50306 series, EN50264-3-1 series, and EN50382 series. Specifically, the preset temperature threshold for the EN50306 series (silicone rubber or cross-linked polyolefin insulation) cables is 105 degrees Celsius; the preset temperature threshold for the EN50264-3-1 series (ethylene propylene rubber insulation) cables is 90 degrees Celsius; and the preset temperature threshold for the EN50382 series (high-temperature silicone rubber insulation) cables is 120 degrees Celsius.

[0108] The preset environmental reference temperature can refer to the standard reference environmental temperature. For example, a preset environmental reference temperature of 45 degrees Celsius can be used as a dimensionless reference for the calculation of the first coefficient, ensuring the comparability of thermal stress evaluation results under different scenarios.

[0109] In one possible implementation, the first coefficient can satisfy:

[0110] ;

[0111] In the above formula, Indicates the first coefficient. This indicates the preset temperature threshold. Indicates the preset ambient reference temperature. This indicates the ambient temperature in the cable's status parameters.

[0112] For example, step S2033 may include determining the second coefficient by looking up a table from a preset association table based on the laying type and the number of parallel roots, wherein the preset association table is an association table of the laying type and the number of parallel roots corresponding to the second coefficient.

[0113] For example, the preset association table can be referenced in Table 2 below. If the laying type and the number of parallel roots are known, the second coefficient corresponding to the laying type and the number of parallel roots can be determined by looking up the table.

[0114] Table 2:

[0115]

[0116] It is understandable that the pre-defined association table can be obtained by staff based on relevant experiments.

[0117] In one possible implementation, the reduction factor can satisfy:

[0118]

[0119] In the above formula, Indicates the conversion factor. Indicates the first coefficient. This represents the second coefficient.

[0120] For example, the reduction factor characterizes the equivalent thermal stress.

[0121] For example, the reduction factors (also known as equivalent thermal stress) of each cable are arranged and divided in descending order to obtain the range to which the thermal stress label belongs. The thermal stress labels can be represented as X1, X2, and X3. For example, the reduction factor range of X1 is [0.6, 1.0], the reduction factor range of X2 is [0.3, 0.6], and the reduction factor range of X3 is [0.0, 0.3]. It can be understood that the larger the K value, the worse the heat dissipation conditions, the greater the temperature influence, and the higher the equivalent thermal stress.

[0122] The advantage of this setup is that by using a reduction factor to characterize the equivalent thermal stress, and by using a single dimensionless value to quantify the comprehensive thermal stress level that is simultaneously affected by temperature and laying method, it is beneficial to quickly sort and accurately identify the cable with the worst thermal stress, significantly reducing the sample size for subsequent tests, thereby improving the efficiency and economy of service capability evaluation.

[0123] S204. Based on the acid-base information, ultraviolet information, and ozone information in the cable's status parameters, determine the third label value corresponding to the operating environment label based on the evaluation rules corresponding to the operating environment label.

[0124] Among them, acid-base information can refer to the pH value of the cable surface or the adjacent air, which is used to reflect the tendency for chemical corrosion.

[0125] Ultraviolet information can refer to the cumulative UV-C (i.e., light source with a wavelength of around 280 nanometers) irradiation intensity experienced by exposed sections of cables (such as roof bridging or exposed undercarriage).

[0126] Ozone information can refer to the volume fraction of ozone in the air around the cable, and its unit can be parts per billion (ppb).

[0127] In one possible implementation, the cable's status parameters also include information on direct sunlight, rainwater, condensation, and oil contamination.

[0128] The direct sunlight information can refer to the cumulative duration of direct sunlight exposure to the cable (e.g., rooftop cable, jumper cable) within a preset period. For example, the direct sunlight information can be obtained based on a light intensity sensor deployed on the exposed section of the cable.

[0129] Rainfall information can refer to the number of times a cable (such as a roof cable or a jumper cable) is directly washed by rainwater within a preset time period. For example, rainfall information can be obtained based on an onboard rain sensor.

[0130] Condensation information can refer to the cumulative time during which the average daily humidity in the area where the cable (e.g., a cable inside a vehicle) is located exceeds a preset humidity value (e.g., 95%) and the temperature is below the dew point temperature. For example, condensation information can be obtained using an integrated temperature and humidity sensor. For example, if condensation affects the cable, it is often accompanied by signs such as water droplets, verdigris, or white fog on the cable.

[0131] Oil contamination information refers to the mass of oil deposited per unit area on the surface of cables (such as cables near pantographs, gearboxes, couplers, doors, wheels, etc.), reflecting the degree of oil contamination on the cables. For example, oil contamination information can be obtained based on sensors such as infrared oil analyzers.

[0132] For example, if the pH value represented by the acid-base information exceeds a preset pH value range, it indicates that the cable is affected by acid-base conditions; if the cumulative irradiance represented by the ultraviolet information is greater than a preset irradiance intensity threshold, it indicates that the cable is affected by ultraviolet radiation; if the ozone volume fraction represented by the ozone information is greater than a preset volume value, it indicates that the cable is affected by ozone; if the cumulative duration of direct sunlight on the cable within a preset period, as represented by the direct sunlight information, is greater than a preset duration threshold, it indicates that the cable is affected by direct sunlight; if the number of times the cable is directly washed by rainwater within a preset time period, as represented by the rainwater information, is greater than a preset number of times threshold, it indicates that the cable is affected by rainwater; if the daily average humidity of the area where the cable is located, as represented by the condensate information, is greater than a preset humidity value and the cumulative time the temperature is below the dew point temperature is greater than a preset condensate duration threshold, it indicates that the cable is affected by condensate; if the oil content deposited per unit area on the cable surface, as represented by the oil contamination information, is greater than a preset oil content, it indicates that the cable is affected by oil contamination.

[0133] For example, considering seven influencing factors—acidity / alkalinity, ultraviolet radiation, ozone, direct sunlight, rainwater, condensate, and oil contamination—the third label value corresponding to the operating environment label can be represented as Z1, Z2, Z3, Z4, Z5, Z6, and Z7, indicating the presence of 7, 6, 5, 4, 3, 2, and 1 influencing factors, respectively. For instance, when the third label value corresponding to the operating environment label is Z1, its impact on the rail vehicle system is relatively the greatest, meaning the cable is affected by all seven factors.

[0134] The advantage of this setup is that it considers at least environmentally relevant factors such as acid and alkali information, ultraviolet information, and ozone information, and quantifies them as a third label value. This can intuitively reflect the overall severity of the environment in which the cable is located, thereby quickly identifying high-risk cables affected by multiple environmental factors, significantly reducing the sample size for subsequent tests, and improving the efficiency and economy of service capability evaluation.

[0135] S205. Based on the appearance information in the cable's condition parameters, and according to the evaluation rules corresponding to the mechanical stress label, determine the fourth label value corresponding to the mechanical stress label.

[0136] The appearance information refers to the cable's external shape and installation status characteristics obtained through visual inspection, image recognition, or laser scanning, and is used to reflect the risk of mechanical fatigue. For example, appearance information may include bending information, swaying information, wrinkle information, and tensile information.

[0137] Bending information can refer to the ratio of the actual bending radius to the outer diameter of the cable. For example, if the cable is unshielded, a bending radius less than 4 times the outer diameter is considered excessive if the cable diameter is less than 12 mm, or less than 5 times the outer diameter if the cable diameter is greater than 12 mm. If the cable is shielded, a bending radius less than 10 times the outer diameter is also considered excessive. For example, the actual bending radius and outer diameter of the cable can be obtained using a laser rangefinder sensor.

[0138] Sway information can refer to the relative displacement amplitude of a cable caused by vibration or impact during vehicle operation. For example, an accelerometer fixed to an adjacent support of the cable can measure the cable displacement. If the displacement is greater than a preset displacement threshold, the cable can be considered to be swaying.

[0139] Wrinkle information can refer to ring-shaped or spiral wrinkles, indentations, or local collapses on the surface of the cable sheath. For example, the number of wrinkles per unit length can be identified and counted by a high-resolution visual inspection system. If the number of wrinkles is greater than a preset wrinkle number threshold, the cable can be considered to have wrinkles.

[0140] Tension information can refer to the axial elongation or thinning of a cable caused by temperature changes, mechanical tension, or improper fixing. For example, tension information can be obtained by measuring the cable diameter change rate using a laser line scanner. For example, if the cable diameter change rate is less than a preset diameter change rate threshold, the cable can be considered to be under tension.

[0141] For example, the mechanical stress of a cable is assessed based on four factors: bending, swaying, wrinkling, and stretching. If the cable exhibits four of these factors simultaneously, its mechanical stress label is Y1. If it exhibits two or three of these factors, the label is Y2. If it exhibits one or zero of these factors, the label is Y3. The lower the value of the mechanical stress label, the greater its impact on the rail vehicle system. For instance, a mechanical stress label of Y1 indicates the greatest impact on the rail vehicle system.

[0142] The beneficial effect of this setup is that it takes into account factors related to appearance information, quantifies the influencing factors of mechanical fatigue such as bending, shaking, wrinkling, and stretching, and obtains a fourth label value to quickly locate cables with high mechanical stress fatigue risk. This avoids omissions and subjective biases in traditional manual experience inspections, significantly reduces the sample size of subsequent tests, and improves the efficiency, consistency, and economy of service capability evaluation.

[0143] S206. Determine the cable's operating condition level based on the first label value, the second label value, the third label value, and the fourth label value.

[0144] In one possible implementation, the original levels of the four categories of labels—first label value, second label value, third label value, and fourth label value—are mapped to quantifiable scores (the lower the score, the more severe the offense).

[0145] For example, the mapping relationship of the first tag is A1=2, A2=5, A3=10, the mapping relationship of the second tag is X1=2, X2=4, X3=6, the mapping relationship of the third tag is Z1=2, Z2=6, Z3=8, and the mapping relationship of the fourth tag is Y1=1, Y2=5, Y3=10.

[0146] Furthermore, the scores corresponding to the four types of labels are weighted and summed to obtain a comprehensive score representing the cable's operating condition level. Based on the comprehensive scores of each cable, the n (e.g., 3) cables with the lowest comprehensive scores are identified as target cables. The weights corresponding to the four types of labels can be pre-determined by the staff.

[0147] In one possible implementation, the cables can be classified according to a first label value, and for each cable in the first label category, a target cable can be determined based on the cable's second label value, third label value, and fourth label value.

[0148] For example, for a cable with a first label value of A1, there are second, third, and fourth label values ​​for the first cable, namely X1, Z1, and Y2 respectively (i.e., the operating condition level of the first cable). Similarly, there are second, third, and fourth label values ​​for the second cable, namely X2, Z1, and Y3 respectively (i.e., the operating condition level of the second cable). Following steps similar to those described above, the original levels of these three label categories can be mapped to quantifiable scores. Then, the scores corresponding to these three label categories are weighted and summed to obtain a comprehensive score representing the cable's operating condition level. This allows for the identification of a target cable from each first label category. The weights corresponding to these three label categories can be pre-determined by the staff.

[0149] S207. Sort the cables according to their operating condition level, and select at least one cable with the highest operating condition level as the target cable.

[0150] For example, the cables are sorted according to the comprehensive score represented by the operating condition level, and at least one cable with the highest operating condition level (i.e. the lowest comprehensive score) is selected as the target cable.

[0151] The method described in this application achieves the effect of improving the accuracy of evaluating the service capability of the overall cable of a rail vehicle.

[0152] Figure 4 A flowchart illustrating the service capability evaluation method provided in this application is shown below. Figure 4 As shown, this embodiment, based on the aforementioned embodiments, provides a detailed description of the method for determining the target cable from multiple cables according to the operating condition level of each cable. This method includes:

[0153] S401. Perform the preset test treatment on the target cable and record the test results of the target cable.

[0154] In one optional implementation, the preset test treatment includes a first test treatment and a second test treatment. The first test treatment is used to verify whether the basic performance of the cable meets the preset standard, and the second test treatment is used to determine the remaining thermal aging life of the cable. Step S401 may include:

[0155] S4011. Perform a first test treatment on the target cable and record the basic performance status of the target cable. Perform a second test treatment on the target cable and record the remaining thermal aging life of the target cable.

[0156] S4012. The basic performance status and remaining thermal aging life are determined as the test results of the target cable.

[0157] The first test treatment can refer to the test treatment of the target cable based on the current European standards for rail vehicle applications (such as EN50306, EN50264, EN 50382), and the corresponding basic performance status is recorded to confirm whether the basic mechanical and electrical performance of the cable before aging meets the minimum requirements.

[0158] Basic performance conditions may include, but are not limited to, insulation resistance.

[0159] The second test procedure can be an accelerated thermal aging test on the cable to determine its remaining thermal aging life. For example, based on relevant standards (e.g., GB / T11026.1), the cable undergoes a series of exposure tests at a set temperature. After each exposure, based on relevant standards (e.g., GB / T2951.12), an elongation at break test is performed, and the average elongation at break is recorded. This continues until the elongation at break decreases to 50% or less of its initial performance. The failure time at that temperature is recorded, and the remaining thermal aging life is calculated using the Arrhenius equation based on the failure time at that temperature. The remaining thermal aging life can refer to the estimated number of years remaining before the cable insulation mechanical properties decrease to 50% of the elongation at break at the current service temperature.

[0160] Furthermore, the basic performance status and remaining thermal aging life are stored in a preset database to facilitate the later determination of whether each cable of the rail vehicle is capable of service.

[0161] It is understandable that by combining the treatment of the first and second tests, it is possible to verify whether the current basic performance of the cable still meets the operational safety requirements, and to quantitatively predict its remaining service life at the actual service temperature, thus ensuring the reliability of determining whether each cable of the rail vehicle is capable of service.

[0162] S402. If the test results of the target cable meet the preset conditions, then it is determined that each cable of the rail vehicle is capable of service.

[0163] In one alternative implementation, step S402 may include:

[0164] If the basic performance status of the target cable in the test results meets the preset standard value, and the remaining thermal aging life of the target cable is greater than or equal to the preset service life, then it is determined that multiple cables of the rail vehicle are capable of service.

[0165] For example, the preset service life is 5 years.

[0166] In one possible implementation, step S402 may further include:

[0167] If the basic performance status of the target cable meets the preset standard value in the test results, and the remaining thermal aging life of the target cable is less than the preset service life, then it is determined that multiple cables of the rail vehicle are not capable of service.

[0168] If the basic performance status of the target cable meets the preset standard value in the test results, and the remaining thermal aging life of the target cable is greater than or equal to the preset service life, then an artificial assessment instruction is issued to instruct relevant personnel (such as the testing party, the assessment party, and the owner to jointly assess) to further determine whether the multiple cables of the rail vehicle are capable of service.

[0169] The service capability evaluation method provided in this application achieves the effect of accurately determining the service capability of the entire cable with the smallest sample size, significantly reducing the test cost, and avoiding the misjudgment of traditional random sampling by conducting test treatment on the target cable.

[0170] Figure 5 A schematic diagram of the cable screening device for service capability evaluation provided in this application is shown below. Figure 5 As shown, the cable screening device 50 for service capability evaluation provided in this embodiment includes: an acquisition module 501, a first determination module 502, and a second determination module 503.

[0171] The acquisition module 501 is used to acquire the status parameters of the cables of the rail vehicle; wherein there are multiple cables.

[0172] The first determining module 502 is used to determine the operating condition level of each cable based on the cable's state parameters and a preset labeling system. The preset labeling system includes label information and its corresponding evaluation rules. The label information describes the state of the cable under different influencing factors and includes voltage level labels, thermal stress labels, operating environment labels, and mechanical stress labels. The evaluation rules are used to determine the quantitative level of the label information. The operating condition level characterizes the severity of the cable's service conditions.

[0173] The second determining module 503 is used to determine the target cable from multiple cables based on the operating condition level of each cable; wherein the target cable is used to determine whether each cable of the rail vehicle is capable of service.

[0174] In an optional example, the first determining module 502 is further configured to determine the first label value corresponding to the voltage level label based on the rated voltage in the cable's status parameters and the evaluation rules corresponding to the voltage level label.

[0175] Based on the ambient temperature, laying type, and number of parallel cables in the cable's condition parameters, and according to the evaluation rules corresponding to the thermal stress label, the second label value corresponding to the thermal stress label is determined.

[0176] Based on the acid-base information, ultraviolet information, and ozone information in the cable's condition parameters, and based on the evaluation rules corresponding to the operating environment label, the third label value corresponding to the operating environment label is determined.

[0177] Based on the appearance information in the cable's condition parameters, and according to the evaluation rules corresponding to the mechanical stress label, the fourth label value corresponding to the mechanical stress label is determined.

[0178] The operating condition level of the cable is determined based on the first label value, the second label value, the third label value, and the fourth label value.

[0179] In an optional example, the first determining module 502 is also used to obtain a preset temperature threshold and a preset ambient reference temperature;

[0180] The first coefficient is determined based on the temperature threshold, the preset environmental reference temperature, and the environmental temperature in the cable's status parameters; the first coefficient characterizes the degree to which the cable is affected by temperature during service.

[0181] The second coefficient is determined based on the laying type and the number of parallel cables; the second coefficient characterizes the degree to which the cable is affected by the laying conditions and cable arrangement during its service life.

[0182] The reduction factor is determined based on the first and second coefficients; the reduction factor characterizes the degree of influence of thermal stress on the cable during service.

[0183] The second label value corresponding to the thermal stress label is determined based on the conversion factor.

[0184] In an optional example, the second determining module 503 is further configured to sort the cables according to their operating condition class and select at least one cable with the highest operating condition class as the target cable.

[0185] In an optional example, the cable screening device for service capability evaluation also includes a third processing module;

[0186] The third processing module is used to perform preset test treatments on the target cable and record the test results of the target cable.

[0187] If the test results of the target cable meet the preset conditions, then it is determined that each cable of the rail vehicle is capable of service.

[0188] In an optional example, the preset test treatment includes a first test treatment and a second test treatment. The first test treatment is used to verify whether the basic performance of the cable meets the preset standard, and the second test treatment is used to determine the remaining thermal aging life of the cable. The third processing module is also used to perform the first test treatment on the target cable and record the basic performance status of the target cable, and to perform the second test treatment on the target cable and record the remaining thermal aging life of the target cable.

[0189] The basic performance status and remaining thermal aging life are determined as the test results for the target cable.

[0190] In an optional example, the third processing module is further configured to determine that multiple cables of the rail vehicle are capable of service if the basic performance status in the test results of the target cable meets the preset standard value and the remaining thermal aging life of the target cable is greater than or equal to the preset service life.

[0191] The cable screening device for service capability evaluation provided in this embodiment can perform the method provided in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0192] Figure 6 A schematic diagram of the structure of the electronic device provided in this application, such as... Figure 6 As shown, the electronic device 60 provided in this embodiment includes at least one processor 601 and a memory 602. Optionally, the electronic device 60 further includes a communication component 603. The processor 601, memory 602, and communication component 603 are connected via a bus 604.

[0193] In a specific implementation, at least one processor 601 executes computer execution instructions stored in memory 602, causing at least one processor 601 to perform the above-described method.

[0194] The specific implementation process of processor 601 can be found in the above method embodiments, and its implementation principle and technical effect are similar. It will not be repeated here.

[0195] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0196] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0197] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0198] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0199] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0200] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0201] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0202] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0203] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0204] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0205] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0206] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0207] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A cable screening method for service capability evaluation, characterized in that, include: Obtain the status parameters of the cables of the rail vehicle; wherein, there are multiple cables; For each cable, the operating condition level of the cable is determined based on the cable's state parameters and a preset labeling system. The preset labeling system includes label information and its corresponding evaluation rules. The label information describes the cable's state under different influencing factors and includes voltage level labels, thermal stress labels, operating environment labels, and mechanical stress labels. The evaluation rules are used to determine the quantitative level of the label information. The operating condition level characterizes the severity of the cable's service conditions. Based on the operating condition level of each cable, a target cable is determined from the plurality of cables; wherein the target cable is used to determine whether each cable of the rail vehicle is capable of service.

2. The method according to claim 1, characterized in that, Based on the cable's condition parameters and a preset labeling system, the cable's operating condition level is determined, including: Based on the rated voltage in the cable's status parameters, and according to the evaluation rules corresponding to the voltage level label, the first label value corresponding to the voltage level label is determined; Based on the ambient temperature, laying type, and number of parallel cables in the cable's status parameters, and according to the evaluation rules corresponding to the thermal stress label, the second label value corresponding to the thermal stress label is determined. Based on the acid-base information, ultraviolet information, and ozone information in the cable's status parameters, and based on the evaluation rules corresponding to the operating environment label, the third label value corresponding to the operating environment label is determined. Based on the appearance information in the cable's state parameters, and according to the evaluation rules corresponding to the mechanical stress label, the fourth label value corresponding to the mechanical stress label is determined. The operating condition level of the cable is determined based on the first tag value, the second tag value, the third tag value, and the fourth tag value.

3. The method according to claim 2, characterized in that, Based on the ambient temperature, laying type, and number of parallel cables in the cable's condition parameters, determine the second tag value corresponding to the thermal stress tag, including: Obtain the preset temperature threshold and the preset ambient reference temperature; A first coefficient is determined based on the temperature threshold, the preset environmental reference temperature, and the environmental temperature in the cable's status parameters; the first coefficient characterizes the degree to which the cable is affected by temperature during service. A second coefficient is determined based on the laying type and the number of parallel cables; wherein the second coefficient characterizes the degree to which the cable is affected by the laying conditions and cable arrangement during service. A reduction factor is determined based on the first coefficient and the second coefficient; wherein the reduction factor characterizes the degree of influence of thermal stress on the cable during service. The second label value corresponding to the thermal stress label is determined based on the reduction factor.

4. The method according to claim 1, characterized in that, Based on the operating condition level of each of the cables, a target cable is determined from the plurality of cables, including: The cables are sorted according to their operating condition levels, and at least one cable with the highest operating condition level is selected as the target cable.

5. The method according to any one of claims 1-4, characterized in that, After determining the target cable from the plurality of cables according to the operating condition class of each of the cables, the process includes: Perform a pre-set test on the target cable and record the test results of the target cable; If the test results of the target cable meet the preset conditions, then it is determined that each cable of the rail vehicle is capable of service.

6. The method according to claim 5, characterized in that, The preset test treatment includes a first test treatment and a second test treatment. The first test treatment is used to verify whether the basic performance of the cable meets the preset standard, and the second test treatment is used to determine the remaining thermal aging life of the cable. Perform a pre-set test on the target cable and record the test results, including: The target cable is subjected to the first test treatment, and the basic performance status of the target cable is recorded. The target cable is subjected to the second test treatment, and the remaining thermal aging life of the target cable is recorded. The basic performance status and the remaining thermal aging life are determined as the test results of the target cable.

7. The method according to claim 6, characterized in that, If the test results of the target cable meet the preset conditions, then it is determined that multiple cables of the rail vehicle are capable of service, including: If the basic performance status of the target cable in the test results meets the preset standard value, and the remaining thermal aging life of the target cable is greater than or equal to the preset service life, then it is determined that the multiple cables of the rail vehicle are capable of service.

8. A cable screening device for evaluating service capability, characterized in that, include: An acquisition module is used to acquire the status parameters of the cables of the rail vehicle; wherein, there are multiple cables; The first determining module is used to determine the operating condition level of each cable based on its state parameters and a preset labeling system. The preset labeling system includes label information and its corresponding evaluation rules. The label information describes the state of the cable under different influencing factors and includes voltage level labels, thermal stress labels, operating environment labels, and mechanical stress labels. The evaluation rules are used to determine the quantitative level of the label information. The operating condition level characterizes the severity of the cable's service conditions. The second determining module is used to determine a target cable from the plurality of cables according to the operating condition level of each cable; wherein the target cable is used to determine whether each cable of the rail vehicle is capable of service.

9. An electronic device, characterized in that, include: Memory, processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory, causing the processor to perform the method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1-7.

Images