Train emergency braking rate deviation test method, system, device and electronic equipment

Abstract

The application provides a train emergency braking rate deviation test method, system, device and electronic equipment, and belongs to the technical field of rail transit. The method comprises the following steps: obtaining running test data sets of multiple emergency braking tests of a train at a first braking gear and a second braking gear; extracting a first emergency braking rate data set at the first braking gear and a second emergency braking rate data set at the second braking gear from the running test data sets; the first braking gear is higher than the second braking gear; performing train emergency braking rate deviation test based on the first emergency braking rate data set and the second emergency braking rate data set, and outputting an emergency braking rate deviation test result of the train. The application can accurately verify and test the emergency braking rate deviation of a marshalling train at high and low braking gears, objectively and accurately evaluate the emergency braking rate deviation of the marshalling train at high and low gears, and fill the technical gap of the virtual marshalling technology of urban rail transit in the aspect of emergency braking rate test verification.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and in particular to a method, system, device, and electronic equipment for testing train emergency braking rate deviation. Background Technology

[0002] During the operation of virtual train formations in urban rail transit, the configuration of the emergency braking rate is a key technical issue. Ensuring that the deviation of the emergency braking rate at different braking levels is within a reasonable range is crucial for the safe operation of virtual train formations.

[0003] In the prior art, CN 115743239 A discloses a virtual train formation control method based on dynamic configuration of emergency braking rate. This method dynamically configures the emergency braking rate of the preceding and following cars in a virtual train formation according to the relative positional relationship between the unit trains. Additionally, CN 113247051 B discloses a train control method based on virtual formation, which obtains the emergency braking distance of the preceding car in real time from the following car; determines the dynamic safe following interval between the following and following cars based on the emergency braking distance of the preceding car and its own operating status; and operates according to this dynamic safe following interval to shorten the following interval between the two cars.

[0004] However, current research on virtual train formation technology mainly focuses on train formation strategies, cooperative operation, and speed control. For example, the train control methods disclosed in the existing technologies lack testing methods and tools for the deviation of emergency braking rate of each car in the virtual train formation. This makes it difficult to verify the deviation of emergency braking rate of the train formation at high and low braking gears, thus making it impossible to accurately assess the safety performance of the train formation.

[0005] Therefore, how to verify and test the deviation of emergency braking rate of each car in a virtual train formation has become a technical problem that the industry urgently needs to solve. Summary of the Invention

[0006] This invention provides a method, system, device, and electronic equipment for testing the emergency braking rate deviation of trains, which can be used to verify and test the emergency braking rate deviation of each car in a virtual train formation.

[0007] This invention provides a method for testing train emergency braking rate deviation, comprising:

[0008] Obtain the operational test dataset of multiple emergency braking tests conducted on the train in the first braking gear and the second braking gear respectively.

[0009] From the running test dataset, extract the first emergency braking rate dataset under the first braking gear and the second emergency braking rate dataset under the second braking gear; the first braking gear is higher than the second braking gear;

[0010] Based on the first emergency braking rate dataset and the second emergency braking rate dataset, a train emergency braking rate deviation test is performed, and the test result of the train's emergency braking rate deviation is output.

[0011] According to the present invention, a method for testing train emergency braking rate deviation includes extracting a first emergency braking rate dataset under the first braking gear and a second emergency braking rate dataset under the second braking gear from the operational test dataset, comprising:

[0012] If the number of emergency braking tests performed on the train in the first braking gear is greater than a first threshold, the first emergency braking rate dataset is extracted from the operational test dataset.

[0013] If the number of emergency braking tests conducted when the train is in the second braking gear exceeds a second threshold, the second emergency braking rate dataset is extracted from the operational test dataset.

[0014] According to the train emergency braking rate deviation test method provided by the present invention, before obtaining the operation test data set of multiple emergency braking tests performed on the train in the first braking gear and the second braking gear respectively, the method further includes:

[0015] In each emergency braking test scenario, if the train successfully performs emergency braking at the target initial speed, raw operating data for each test scenario is collected; the target initial speed is determined based on the test scenario set for each emergency braking test.

[0016] The original running data is cleaned to obtain the running test data for each test scenario;

[0017] The running test dataset is obtained based on the running test data in each test scenario.

[0018] According to the present invention, a method for testing the train emergency braking rate deviation includes performing a train emergency braking rate deviation test based on a first emergency braking rate dataset and a second emergency braking rate dataset, and outputting the train's emergency braking rate deviation test result, comprising:

[0019] Data fitting is performed on the first emergency braking rate dataset and the second emergency braking rate dataset to determine the lower deviation value of the emergency braking rate corresponding to the first braking gear and the upper deviation value of the emergency braking rate corresponding to the second braking gear.

[0020] Based on the lower deviation value and the upper deviation value of the emergency braking rate, the test result of the emergency braking rate deviation of the train is output.

[0021] According to the present invention, a method for testing train emergency braking rate deviation includes, in which data fitting is performed on the first emergency braking rate dataset and the second emergency braking rate dataset to determine the lower deviation value of the emergency braking rate corresponding to the first braking gear and the upper deviation value of the emergency braking rate corresponding to the second braking gear, comprising:

[0022] According to the preset confidence level, data fitting calculations are performed on the first emergency braking rate dataset and the second emergency braking rate dataset to obtain the first confidence interval of the emergency braking rate data distribution corresponding to the first braking gear and the second confidence interval of the emergency braking rate data distribution corresponding to the second braking gear.

[0023] Based on the lower boundary value of the first confidence interval and the first preset deviation value, determine the lower deviation value of the emergency braking rate corresponding to the first braking gear;

[0024] Based on the upper boundary value of the second confidence interval and the second preset deviation value, the upper deviation value of the emergency braking rate corresponding to the second braking gear is determined.

[0025] According to a train emergency braking rate deviation testing method provided by the present invention, the step of outputting the train's emergency braking rate deviation test result based on the lower deviation value and the upper deviation value of the emergency braking rate includes:

[0026] If the lower deviation value of the emergency braking rate is greater than the upper deviation value of the emergency braking rate, the emergency braking rate deviation test result of the train is output as passed; otherwise, the emergency braking rate deviation test result of the train is output as failed.

[0027] The present invention also provides a train emergency braking rate deviation testing system, comprising:

[0028] The acquisition unit is used to acquire the operational test dataset of the train undergoing multiple emergency braking tests in the first braking gear and the second braking gear respectively.

[0029] The extraction unit is used to extract a first emergency braking rate dataset under the first braking gear and a second emergency braking rate dataset under the second braking gear from the running test dataset; the first braking gear is higher than the second braking gear.

[0030] The testing unit is used to perform a train emergency braking rate deviation test based on the first emergency braking rate dataset and the second emergency braking rate dataset, and output the train emergency braking rate deviation test result.

[0031] The present invention also provides a train emergency braking rate deviation testing device, comprising:

[0032] The system comprises a data acquisition module, a data analysis module, a data calculation module, and a test result output module; these modules are connected sequentially.

[0033] The data acquisition module is used to collect the raw operating data of the train during each emergency braking test at the first braking gear and the second braking gear, respectively; the first braking gear is higher than the second braking gear.

[0034] The data analysis module is used to receive the raw operating data sent by the data acquisition module, and to perform data preprocessing on the raw operating data to obtain an operating test dataset of the train performing multiple emergency braking tests in the first braking gear and the second braking gear respectively; from the operating test dataset, the first emergency braking rate dataset in the first braking gear and the second emergency braking rate dataset in the second braking gear are extracted.

[0035] The data calculation module is used to receive the first emergency braking rate dataset and the second emergency braking rate dataset sent by the data analysis module, and to perform data fitting on the first emergency braking rate dataset and the second emergency braking rate dataset to determine the lower deviation value of the emergency braking rate corresponding to the first braking gear and the upper deviation value of the emergency braking rate corresponding to the second braking gear.

[0036] The test result output module is used to receive the lower deviation value and the upper deviation value of the emergency braking rate sent by the data calculation module, and output the emergency braking rate deviation test result of the train based on the lower deviation value and the upper deviation value of the emergency braking rate.

[0037] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the train emergency braking rate deviation test method as described above.

[0038] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the train emergency braking rate deviation test method as described above.

[0039] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the train emergency braking rate deviation test method as described above.

[0040] The train emergency braking rate deviation testing method, system, device, and electronic equipment provided by this invention acquires operational test datasets of multiple emergency braking tests conducted on the train at high and low braking gears. Emergency braking rate datasets for each braking gear are extracted from these datasets. The train emergency braking rate deviation is then tested using these datasets. Data analysis of the emergency braking rate datasets at high and low braking gears determines whether the emergency braking rate deviation meets technical standards. Based on the results, the emergency braking rate deviation test results are output. This allows for accurate verification testing of the emergency braking rate deviation of train formations at high and low braking gears, objectively and accurately evaluating the emergency braking rate deviation at these gears. This fills a technical gap in emergency braking rate testing and verification for urban rail virtual train formation technology, contributing to improved safety and reliability of urban rail virtual train formation operation. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0042] Figure 1 This is one of the flowcharts of the train emergency braking rate deviation test method provided by the present invention;

[0043] Figure 2 This is a schematic diagram of the emergency braking test scenario in the train emergency braking rate deviation test method provided by the present invention;

[0044] Figure 3 This is a schematic diagram of the structure of the train emergency braking rate deviation testing device provided by the present invention;

[0045] Figure 4 This is the second flowchart of the train emergency braking rate deviation test method provided by the present invention;

[0046] Figure 5 This is a schematic diagram of the test result curve of the train emergency braking rate deviation test method provided by the present invention;

[0047] Figure 6This is a schematic diagram of the train emergency braking rate deviation testing system provided by the present invention;

[0048] Figure 7 This is a schematic diagram of the physical structure of the electronic device provided by the present invention. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0050] In the description of the invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] The following is combined Figures 1-7 The present invention describes a train emergency braking rate deviation testing method, system, device, and electronic equipment.

[0052] Figure 1 This is one of the flowcharts illustrating the train emergency braking rate deviation testing method provided by the present invention, such as... Figure 1 As shown, it includes steps 110, 120 and 130.

[0053] Step 110: Obtain the operational test dataset of the train undergoing multiple emergency braking tests in the first braking gear and the second braking gear respectively.

[0054] Step 120: Extract the first emergency braking rate dataset under the first braking gear and the second emergency braking rate dataset under the second braking gear from the running test dataset; the first braking gear is higher than the second braking gear.

[0055] Step 130: Perform a train emergency braking rate deviation test based on the first emergency braking rate dataset and the second emergency braking rate dataset, and output the train emergency braking rate deviation test results.

[0056] Specifically, the first braking gear described in the embodiments of the present invention refers to an emergency braking gear used by the train in emergency braking tests, which can achieve a short braking distance and can be characterized as a high braking gear.

[0057] The second braking gear described in this embodiment of the invention refers to another emergency braking gear used by the train in emergency braking tests. The braking distance achieved is much greater than that of the first braking gear, and it can be characterized as a low braking gear.

[0058] It should be noted that the train described in the embodiments of the present invention can be a train used for virtual formation, including trains that have been formed and trains to be formed, or it can be a conventional train not used for virtual formation.

[0059] In an embodiment of the present invention, the first braking gear is higher than the second braking gear, and the emergency braking rate range corresponding to the first braking gear can be -134 m / s. 2 Up to -169m / s 2 The emergency braking rate range corresponding to the second braking gear can be -108m / s. 2 Up to -132m / s 2 The absolute value of the emergency braking rate corresponding to the first braking gear is greater than the absolute value of the emergency braking rate corresponding to the second braking gear.

[0060] In an embodiment of the present invention, by setting the current emergency braking gear of the train, pressing the emergency braking button during train operation to apply emergency braking to the train, and collecting emergency braking data when it is determined that the train has successfully applied emergency braking, the emergency braking test of the train under the current emergency braking gear is realized.

[0061] The first emergency braking rate dataset described in this embodiment of the invention refers to a dataset consisting of emergency braking rate data collected from each emergency braking test conducted by the train in the first braking gear.

[0062] The second emergency braking rate dataset described in this embodiment of the invention refers to a data set composed of emergency braking rate data collected from each emergency braking test conducted by the train in the second braking gear.

[0063] The train emergency braking rate deviation test described in this embodiment of the invention refers to the test conducted on the emergency braking rate deviation of each train in a virtual train formation for urban rail transit. It is used to determine whether the emergency braking rate data of the train formation under different braking gears meets the relevant technical standards and to verify the correctness of the emergency braking rate deviation of the train under high and low braking gears during the emergency braking phase.

[0064] In embodiments of the present invention, a pre-set data acquisition module can be used to collect real-time operational data information of the train under emergency braking, such as train speed, emergency braking acceleration, emergency braking rate data, and other operational test data.

[0065] Furthermore, in an embodiment of the present invention, in step 110, an operational test dataset of multiple emergency braking tests conducted by the train in the first braking gear and the second braking gear can be obtained based on the operational test data generated by each emergency braking test conducted by the train in different braking gears.

[0066] Based on the above embodiments, as an optional embodiment, before obtaining the operational test dataset of multiple emergency braking tests conducted by the train in the first braking gear and the second braking gear respectively, the method further includes:

[0067] In each emergency braking test scenario, raw operational data is collected under the condition that the train successfully performs emergency braking at the target initial speed; the target initial speed is determined according to the test scenario set for each emergency braking test.

[0068] The raw runtime data is cleaned to obtain runtime test data for each test scenario.

[0069] The running test dataset is obtained based on the running test data in each test scenario.

[0070] Specifically, the target initial speed described in this embodiment of the invention refers to the operating speed required for the train to begin emergency braking. It can be randomly selected from a preset initial speed range based on the test scenario set for each emergency braking test. The preset initial speed range can be from 5 km / h to 100 km / h.

[0071] In an embodiment of the present invention, firstly, a corresponding test scenario needs to be set according to the emergency braking gear configured for each train, including high braking gear and low braking gear, to determine the target initial speed of the train during emergency braking. Then, the test scenario is activated, and after the train reaches the target initial speed, emergency braking is applied to the train.

[0072] Figure 2 This is a schematic diagram of an emergency braking test scenario in the train emergency braking rate deviation test method provided by the present invention, as shown below. Figure 2 As shown, the train unit to be assembled runs from station 3 to station 2 in single-car mode. When the train unit is running at different initial speeds, the emergency braking is set by pressing the vehicle emergency brake button, so that the train can perform emergency braking and thus conduct an emergency braking test.

[0073] Furthermore, in each emergency braking test scenario, after confirming that the train has successfully implemented emergency braking at the target initial speed, the train will perform emergency braking at the determined target initial speed. The pre-set data acquisition module will collect the train's operation data information in real time for each emergency braking test scenario. This collected data is initially the raw operation data of the train's emergency braking and needs to be further preprocessed, such as data cleaning of these raw operation data, including handling outliers and missing values, etc., before clean and accurate collected data can be generated to obtain the operation test data for each test scenario.

[0074] Finally, based on the running test data of the vehicle in each test scenario, a running test dataset is constructed after multiple emergency braking tests.

[0075] The method of this invention, after determining that the train has successfully implemented emergency braking at the target initial speed in each emergency braking test, collects the original operating data of the virtual train in real time, and performs data preprocessing on the collected original operating data to ensure the accuracy and availability of the collected data, providing an accurate and reliable data source for subsequent verification tests, so as to provide accurate and reliable test results and help to accurately verify the deviation of emergency braking rate of the train at high and low braking gears.

[0076] Furthermore, in an embodiment of the present invention, in step 120, emergency braking rate data for each braking gear is filtered from the running test dataset, and the first emergency braking rate dataset for the first braking gear and the second emergency braking rate dataset for the second braking gear are extracted, thus obtaining the emergency braking rate dataset for the high braking gear and the emergency braking rate data for the low braking gear.

[0077] It is understandable that each emergency braking rate data point in the emergency braking rate dataset for each braking gear corresponds to a target initial velocity. Therefore, a planar coordinate system can be constructed using the initial velocity and emergency braking rate as the horizontal and vertical axes, and each emergency braking rate data point in the emergency braking rate dataset for each braking gear can be distributed in this planar coordinate system.

[0078] In an embodiment of the present invention, by utilizing the first emergency braking rate dataset under the first braking gear and the second emergency braking rate dataset under the second braking gear, and based on the distribution of each emergency braking rate data in the aforementioned planar coordinate system, the deviation of the emergency braking rate of the train under high and low braking gears can be calculated and verified, thereby effectively verifying the safety performance of the train under emergency braking at different braking gears.

[0079] Furthermore, in an embodiment of the present invention, in step 130, a train emergency braking rate deviation test is performed based on a first emergency braking rate dataset and a second emergency braking rate dataset. Specifically, the first emergency braking rate dataset and the second emergency braking rate dataset can be used to calculate the emergency braking rate deviation of the train at high and low braking gears. The emergency braking rate deviation of the train at high and low braking gears is then compared and analyzed with the technical standard requirements to determine whether the emergency braking rate deviation meets the technical standard requirements. Based on the determination result, the emergency braking rate deviation test result of the train is output to verify the safety performance of the train under emergency braking.

[0080] The train emergency braking rate deviation test method of this invention acquires a test dataset of multiple emergency braking tests conducted on the train at high and low braking gears. It then extracts emergency braking rate datasets for each braking gear from the test datasets and uses these datasets to perform an emergency braking rate deviation test. By analyzing the emergency braking rate datasets at high and low braking gears, it can determine whether the emergency braking rate deviation of the train at high and low braking gears meets the technical standard requirements. Based on the determination result, it outputs the train's emergency braking rate deviation test result. This method can accurately verify the emergency braking rate deviation of train formations at high and low braking gears, objectively and accurately assessing the emergency braking rate deviation of train formations at high and low gears. It fills the technical gap in emergency braking rate testing and verification in urban rail virtual formation technology, and helps improve the safety and reliability of urban rail virtual formation train operation.

[0081] Based on the above embodiments, as an optional embodiment, extracting the first emergency braking rate dataset under the first braking gear and the second emergency braking rate dataset under the second braking gear from the running test dataset includes:

[0082] If the number of emergency braking tests conducted when the train is in the first braking gear exceeds a first threshold, the first emergency braking rate dataset is extracted from the operational test dataset.

[0083] If the number of emergency braking tests conducted when the train is in the second braking gear exceeds the second threshold, the second emergency braking rate dataset is extracted from the operational test dataset.

[0084] Specifically, the first threshold described in this embodiment of the invention refers to a pre-set threshold for the number of emergency braking tests performed on the train in the first braking gear, which can be determined according to actual design requirements. Optionally, the first threshold can be set to 300.

[0085] The second threshold described in this embodiment of the invention refers to a pre-set threshold for the number of emergency braking tests performed on the train in the second braking gear, which can also be determined according to actual design requirements. Optionally, the second threshold can be set to 300.

[0086] In an embodiment of the present invention, in order to further improve the accuracy of the emergency braking rate deviation test under high and low braking gears of the train, more test data can be collected to obtain more emergency braking rate data for verification testing.

[0087] In an embodiment of the present invention, the first emergency braking rate dataset can be extracted from the running test dataset only when it is determined that the number of emergency braking tests when the train is in the first braking gear is greater than a first threshold, that is, when it is determined that the number of emergency braking tests when the train is in the high braking gear is greater than 300.

[0088] Similarly, in embodiments of the present invention, the second emergency braking rate dataset can be extracted from the running test dataset only when it is determined that the number of emergency braking tests when the train is in the second braking gear is greater than the second threshold, that is, when it is determined that the number of emergency braking tests when the train is in the low braking gear is greater than 300.

[0089] In an embodiment of the present invention, the emergency braking rate dataset under high and low braking gears is extracted from the running test dataset only after the number of emergency braking tests under high and low braking gears exceeds 300. This emergency braking rate data is then used to conduct train emergency braking rate deviation tests. This not only improves the accuracy of emergency braking rate deviation tests under high and low braking gears of the train formation, but also ensures the computational efficiency of data calculation during the test process.

[0090] The method of this invention, by filtering emergency braking rate data that have reached a test number threshold from the operational test dataset, and using more test data to verify the deviation of emergency braking rate in high and low braking gears of the train, can further improve the accuracy of calculating the deviation of emergency braking rate in high and low gears of the train, and improve the accuracy and reliability of the test results of the train emergency braking rate deviation.

[0091] Based on the above embodiments, as an optional embodiment, a train emergency braking rate deviation test is performed based on a first emergency braking rate dataset and a second emergency braking rate dataset, and the train emergency braking rate deviation test result is output, including:

[0092] Data fitting is performed on the first emergency braking rate dataset and the second emergency braking rate dataset to determine the lower deviation value of the emergency braking rate corresponding to the first braking gear and the upper deviation value of the emergency braking rate corresponding to the second braking gear.

[0093] Based on the lower deviation value and the upper deviation value of the emergency braking rate, the test results of the train's emergency braking rate deviation are output.

[0094] Specifically, the lower deviation value of the emergency braking rate described in the embodiments of the present invention refers to the absolute value of the lower boundary deviation of the confidence interval determined by the distribution of emergency braking rate data in the first emergency braking rate dataset corresponding to the first braking gear. It can be obtained by performing data statistics and fitting calculations on the first emergency braking rate dataset.

[0095] The upper deviation value of the emergency braking rate described in the embodiments of the present invention refers to the absolute value of the upper boundary deviation of the confidence interval determined by the distribution of emergency braking rate data in the second emergency braking rate dataset corresponding to the second braking gear. It can be obtained by performing data statistics and fitting calculations on the second emergency braking rate dataset.

[0096] Furthermore, in an embodiment of the present invention, based on the distribution of emergency braking rate data in the first emergency braking rate dataset and the second emergency braking rate dataset, data fitting is performed on the first emergency braking rate dataset and the second emergency braking rate dataset to determine the confidence intervals corresponding to the first emergency braking rate dataset and the second emergency braking rate dataset, respectively. Then, based on the range of their respective confidence intervals, the lower deviation value of the emergency braking rate corresponding to the first braking gear and the upper deviation value of the emergency braking rate corresponding to the second braking gear are calculated.

[0097] Based on the above embodiments, as an optional embodiment, data fitting is performed on the first emergency braking rate dataset and the second emergency braking rate dataset to determine the lower deviation value of the emergency braking rate corresponding to the first braking gear and the upper deviation value of the emergency braking rate corresponding to the second braking gear, including:

[0098] According to the preset confidence level, data fitting calculations are performed on the first emergency braking rate dataset and the second emergency braking rate dataset to obtain the first confidence interval of the emergency braking rate data distribution corresponding to the first braking gear and the second confidence interval of the emergency braking rate data distribution corresponding to the second braking gear.

[0099] Based on the lower boundary value of the first confidence interval and the first preset deviation value, determine the lower deviation value of the emergency braking rate corresponding to the first braking gear;

[0100] Based on the upper boundary value of the second confidence interval and the second preset deviation value, determine the upper deviation value of the emergency braking rate corresponding to the second braking gear.

[0101] Specifically, the pre-set confidence level described in the embodiments of the present invention refers to a confidence level parameter that is pre-set for data statistics and simulation calculations, which is calculated based on a pre-determined significance level parameter.

[0102] In an embodiment of the present invention, the significance level parameter can be selected as 0.01, and the preset reliability is 0.99 (99%).

[0103] It is understandable that the first confidence interval refers to the 99% confidence interval of the emergency braking rate data distribution corresponding to the first braking gear, i.e., the high braking gear, and the second confidence interval refers to the 99% confidence interval of the emergency braking rate data distribution corresponding to the second braking gear, i.e., the low braking gear.

[0104] The first preset deviation value described in this embodiment of the invention refers to the allowable deviation fluctuation threshold of the lower boundary value of the first confidence interval, which is determined according to relevant technical specifications and practical experience, and can be specifically set to 3m / s. 2 .

[0105] The second preset deviation value described in this embodiment of the invention refers to the allowable deviation fluctuation threshold of the upper boundary value of the second confidence interval, which is determined according to relevant technical specifications and practical experience, and can be specifically set to -8m / s. 2 .

[0106] Furthermore, in an embodiment of the present invention, the preset confidence level can be set to 99%. According to the preset confidence level, data statistics and fitting calculations are performed on the first and second emergency braking rate datasets to determine the distribution of each emergency braking rate data point in the initial velocity-emergency braking rate plane coordinate system. Using the emergency braking rate parameter as the classification basis, the 99% confidence interval of the emergency braking rate data distribution corresponding to the first braking gear is calculated, i.e., the first confidence interval is obtained. Similarly, the 99% confidence interval of the emergency braking rate data distribution corresponding to the second braking gear is calculated, i.e., the second confidence interval is obtained.

[0107] Furthermore, in an embodiment of the present invention, by determining the lower boundary value of the first confidence interval and summing the lower boundary value of the first confidence interval with the first preset deviation value, the lower deviation value of the emergency braking rate corresponding to the first braking gear can be calculated.

[0108] Similarly, by determining the upper boundary value of the second confidence interval and summing it with the second preset deviation value, the upper deviation value of the emergency braking rate corresponding to the second braking gear can be calculated.

[0109] The method of this invention utilizes mathematical statistics to perform data statistics and fitting calculations on the emergency braking rate datasets under high braking gears and low braking gears, calculating the confidence intervals of the emergency braking rate data distribution under high and low braking gears. Then, using the confidence intervals, the deviation of the emergency braking rate under high and low braking gears is fitted, which can accurately and effectively obtain the lower deviation value of the emergency braking rate corresponding to the high braking gear and the upper deviation value of the emergency braking rate corresponding to the low braking gear, ensuring the accuracy of the data calculation results and improving the accuracy and reliability of subsequent train emergency braking rate deviation tests.

[0110] Furthermore, in an embodiment of the present invention, based on the calculated lower deviation value and upper deviation value of the emergency braking rate, the train's emergency braking rate deviation test result can be determined and output by comparing the magnitude between the lower deviation value and the upper deviation value of the emergency braking rate.

[0111] Based on the above embodiments, as an optional embodiment, the emergency braking rate deviation test results of the train are output based on the lower deviation value and the upper deviation value of the emergency braking rate, including:

[0112] If the lower deviation value of the emergency braking rate is greater than the upper deviation value of the emergency braking rate, the emergency braking rate deviation test result of the output train is considered passed; otherwise, the emergency braking rate deviation test result of the output train is considered failed.

[0113] Specifically, in this embodiment of the invention, based on relevant technical specifications and practical experience, the technical standard requirements for the deviation of the emergency braking rate under emergency braking of the train are as follows: the deviation value of the emergency braking rate corresponding to the first braking gear must be greater than the deviation value of the emergency braking rate corresponding to the second braking gear, so as to ensure that the deviation value of the emergency braking rate under the low braking gear does not exceed the deviation value of the emergency braking rate under the high braking gear.

[0114] Furthermore, in an embodiment of the present invention, if it is determined that the lower deviation value of the emergency braking rate corresponding to the first braking gear is greater than the upper deviation value of the emergency braking rate corresponding to the second braking gear, it indicates that the upper deviation value of the emergency braking rate under the lower braking gear does not exceed the lower deviation value of the emergency braking rate under the higher braking gear. Therefore, it can be determined that the emergency braking rate deviation of the train under emergency braking meets the above-mentioned technical standard requirements, and the emergency braking rate deviation test result of the output train is passed.

[0115] Otherwise, in the embodiments of the present invention, if it is determined that the lower deviation value of the emergency braking rate corresponding to the first braking gear is not greater than the upper deviation value of the emergency braking rate corresponding to the second braking gear, that is, the lower deviation value of the emergency braking rate corresponding to the first braking gear is less than or equal to the upper deviation value of the emergency braking rate corresponding to the second braking gear, it indicates that the upper deviation value of the emergency braking rate under the low braking gear is equal to or exceeds the lower deviation value of the emergency braking rate under the high braking gear. It can be determined that the emergency braking rate deviation of the train does not meet the above technical standard requirements, and the emergency braking rate deviation test result of the output train is unsuccessful.

[0116] In the embodiments of the present invention, by judging whether the deviation of the emergency braking rate in high and low gears of the train after multiple emergency braking tests meets the technical standard requirements, the emergency braking rate deviation of the virtual train in urban rail transit under emergency braking in high and low gears can be effectively verified and tested. This can accurately evaluate the safety performance of the train in the emergency braking phase. By effectively combining actual operating conditions and analysis techniques, the accuracy and reliability of the test results are improved.

[0117] The method of this invention uses data fitting of emergency braking rate datasets of trains in high and low braking gears to calculate the corresponding emergency braking rate deviation value. Based on the distribution of the emergency braking rate deviation value in high and low braking gears, the method performs emergency braking rate deviation test on the train. This can effectively test and verify the emergency braking rate deviation of the train in high and low braking gears, and achieve accurate evaluation of the emergency braking safety performance of trains.

[0118] Figure 3 This is a schematic diagram of the train emergency braking rate deviation testing device provided by the present invention, as shown below. Figure 3 As shown, it includes:

[0119] The system comprises a data acquisition module 310, a data analysis module 320, a data calculation module 330, and a test result output module 340; these modules are connected sequentially.

[0120] The data acquisition module 310 is used to collect the raw operating data of the train during each emergency braking test in the first braking gear and the second braking gear respectively; the first braking gear is higher than the second braking gear.

[0121] The data analysis module 320 is used to receive the raw operating data sent by the data acquisition module 310, and to perform data preprocessing on the raw operating data to obtain an operating test dataset of multiple emergency braking tests conducted by the train in the first braking gear and the second braking gear respectively; from the operating test dataset, the first emergency braking rate dataset in the first braking gear and the second emergency braking rate dataset in the second braking gear are extracted.

[0122] The data calculation module 330 is used to receive the first emergency braking rate dataset and the second emergency braking rate dataset sent by the data analysis module 320, and to perform data fitting on the first emergency braking rate dataset and the second emergency braking rate dataset to determine the lower deviation value of the emergency braking rate corresponding to the first braking gear and the upper deviation value of the emergency braking rate corresponding to the second braking gear.

[0123] The test result output module 340 is used to receive the lower deviation value and the upper deviation value of the emergency braking rate sent by the data calculation module 330, and output the test result of the train's emergency braking rate deviation based on the lower deviation value and the upper deviation value of the emergency braking rate.

[0124] Specifically, in embodiments of the present invention, a corresponding test scenario is designed based on the emergency braking gear configured for each train, including high braking gear and low braking gear, to determine the target initial speed for emergency braking. Then, the test scenario is initiated, and the train is started normally until it reaches the target initial speed before emergency braking is performed. In each emergency braking test scenario, if the train is determined to be at the target initial speed and successfully performs emergency braking, the train will perform emergency braking at the determined target initial speed.

[0125] In an embodiment of the present invention, the data acquisition module collects raw operating data in real time for each emergency braking test conducted by the train in the first braking gear and the second braking gear, such as train speed, emergency braking acceleration, emergency braking rate data, etc., and sends the collected raw operating data to the data analysis module.

[0126] In an embodiment of the present invention, the data analysis module receives raw operational data sent by the data acquisition module and performs data preprocessing on the raw operational data, such as data cleaning to remove outliers and missing values, to obtain accurate and usable operational test data, including operational test datasets of multiple emergency braking tests conducted by the train in the first braking gear and the second braking gear. Furthermore, the data analysis module performs feature extraction, data classification, and data filtering on the operational test datasets to extract the first emergency braking rate dataset in the first braking gear and the second emergency braking rate dataset in the second braking gear, and sends these emergency braking rate datasets to the data calculation module.

[0127] In an embodiment of the present invention, after receiving the first emergency braking rate dataset and the second emergency braking rate dataset sent by the data analysis module, the data calculation module performs train emergency braking rate calculation. By performing data fitting on the first and second emergency braking rate datasets, the distribution of each emergency braking rate data in the initial velocity-emergency braking rate plane coordinate system is determined. Using the emergency braking rate parameter as the classification basis, the 99% confidence interval of the emergency braking rate data distribution corresponding to the first braking gear is calculated to obtain the first confidence interval; and the 99% confidence interval of the emergency braking rate data distribution corresponding to the second braking gear is calculated to obtain the second confidence interval.

[0128] Next, the data calculation module determines the lower boundary value of the first confidence interval and sums it with the first preset deviation value to calculate the lower deviation value of the emergency braking rate corresponding to the first braking gear. Simultaneously, the data calculation module determines the upper boundary value of the second confidence interval and sums it with the second preset deviation value to calculate the upper deviation value of the emergency braking rate corresponding to the second braking gear. The lower deviation value of the emergency braking rate corresponding to the first braking gear and the upper deviation value of the emergency braking rate corresponding to the second braking gear are then sent to the test result output module.

[0129] In an embodiment of the present invention, the test result output module receives the lower deviation value and the upper deviation value of the emergency braking rate sent by the data calculation module, and outputs the test result of the train's emergency braking rate deviation based on the comparison result of the lower deviation value and the upper deviation value of the emergency braking rate. Simultaneously, the test result output module can also generate and output a test result curve based on the calculation result of the data calculation module, facilitating viewing and further analysis by test personnel.

[0130] The train emergency braking rate deviation testing device provided in this invention collects actual operational test data of the train under different braking gears during emergency braking tests, processes and analyzes the data to calculate key indicators, compares them with preset technical standards, and determines whether the emergency braking rate deviation values ​​of the train at high and low braking gears are qualified. It can intuitively and accurately verify the emergency braking rate deviation of the train at high and low braking gears, accurately assess the safety performance of the train during emergency braking, and provide reliable technical support for the safe operation of urban rail virtual train formation systems.

[0131] Figure 4 This is the second flowchart of the train emergency braking rate deviation test method provided by the present invention, as shown below. Figure 4 As shown, in an embodiment of the present invention, the testing process can be further divided into the following steps:

[0132] Step 41, Scenario Design and Description. Switch the braking gear of the train to the gear to be tested, such as high braking gear (high braking gear / low braking gear must be tested separately), and set up test scenarios for emergency braking under different braking gears. Start the test scenario, start the train unit to be assembled in single-car mode, and when the train unit is running at different initial speeds, press the vehicle emergency brake button to apply emergency braking to the train, and collect and analyze the raw train operation data.

[0133] Step 42: Set up the testing device. The testing device includes the data acquisition module, data analysis module, data calculation module, and test result output module described above.

[0134] Step 43, Connect the testing device. Connect the testing device to the recording board of the train's onboard equipment, and ensure that the testing device can normally receive the actual operating data sent by the onboard equipment.

[0135] Step 44: Execute the test scenario and collect test data. In this step, according to the test scenario designed in Step 41, the raw operating data of the train formation is collected in real time through the data acquisition module of the test device.

[0136] Step 45, Test Data Analysis. The data analysis module of the testing device preprocesses, classifies, and filters the collected raw operating data. During data analysis, the collected data needs to be extracted and classified. It checks and matches the emergency braking gear configuration based on the test data, classifying it into high and low gears (i.e., high braking gear and low braking gear). During data analysis, if the number of emergency braking tests corresponding to a certain braking gear is greater than 300 (reference value, configurable), the emergency braking rate dataset for that braking gear is extracted. This yields the emergency braking rate datasets for both high and low braking gears. The data analysis module outputs these datasets to the data calculation module. Otherwise, it returns to the initial state and continues setting the high and low braking gears for emergency braking tests.

[0137] Step 46, Test Data Calculation. Using the data calculation module of the testing device, a data fitting algorithm is employed to perform statistical analysis and fitting calculations on the emergency braking data for high and low gears. This yields the lower deviation value of the emergency braking rate corresponding to the high braking gear and the upper deviation value of the emergency braking rate corresponding to the low braking gear. The calculated results are then output to the test result output module.

[0138] Step 47, Test Result Output. The test result output module of the testing device compares the specific results calculated by the data calculation module with the preset technical standards and automatically outputs the test results. If the lower deviation value of the emergency braking rate corresponding to the high braking gear is higher than the upper deviation value of the emergency braking rate corresponding to the low braking gear, the test result is considered passed; otherwise, the test result is considered failed. The test result output module can also generate and output test result curves based on comparative analysis, allowing testers to view and analyze the results intuitively and conveniently.

[0139] Figure 5 This is a schematic diagram of the test result curve of the train emergency braking rate deviation test method provided by the present invention, as shown in the figure. Figure 5 As shown in the test result curve, the emergency braking rate data for each high and low braking gear are distributed in the plane coordinate system of initial speed-emergency braking rate. The horizontal axis represents the initial speed of the train when emergency braking is implemented, and the vertical axis represents the emergency braking rate. The black asterisks represent the experimental data of emergency braking rate at the low braking gear when the train implements emergency braking; the black circles represent the experimental data of emergency braking rate at the high braking gear when the train implements emergency braking.

[0140] Continue to refer to Figure 5 The 99% confidence interval for high braking gears refers to the 99% confidence interval of the emergency braking rate data distribution corresponding to high braking gears, with a range of -136 m / s. 2 Up to -161m / s 2 The 99% confidence interval for low gears refers to the 99% confidence interval of the emergency braking rate data distribution corresponding to low braking gears, with a range of -108 m / s. 2 Up to -129m / s 2 The deviation value at higher gears is the same as the deviation value for emergency braking rate corresponding to higher braking gears, which is 134 m / s. 2 The deviation value in low gear is the same as the deviation value of the emergency braking rate corresponding to the low braking gear, which is 136.2 m / s. 2 Therefore, it can be seen that the lower deviation value of the emergency braking rate corresponding to the high braking gear is less than the upper deviation value of the emergency braking rate corresponding to the low braking gear. At this time, it can be determined that the train's emergency braking rate deviation test result is unsuccessful.

[0141] Step 48, Test Analysis and Evaluation. This test method and apparatus can output the test results in a visual format, facilitating further analysis and judgment by testers. Testers can evaluate the test results by comparing the output results with the expected technical specifications.

[0142] The method of this invention collects actual operating data of the train during emergency braking tests at high and low braking gears and performs data fitting. This allows for accurate calculation of the deviation in emergency braking rate at high and low braking gears, enabling a more objective and accurate assessment of the deviation in emergency braking rate at high and low braking gears. It also provides a direct verification of whether the deviation in emergency braking rate at high and low gears meets the design technical standards. This fills the technical gap in emergency braking rate testing and verification for urban rail virtual train formation technology, helps to comprehensively evaluate the safety performance of virtual train formations, and provides important technical support and guarantees for the safe operation of urban rail virtual train formation systems.

[0143] The train emergency braking rate deviation test system provided by the present invention is described below. The train emergency braking rate deviation test system described below can be referred to in correspondence with the train emergency braking rate deviation test method described above.

[0144] Figure 6 This is a schematic diagram of the train emergency braking rate deviation testing system provided by the present invention, as shown below. Figure 6 As shown, it includes:

[0145] The acquisition unit 610 is used to acquire the operation test dataset of the train undergoing multiple emergency braking tests in the first braking gear and the second braking gear respectively.

[0146] Extraction unit 620 is used to extract a first emergency braking rate dataset under a first braking gear and a second emergency braking rate dataset under a second braking gear from the running test dataset; the first braking gear is higher than the second braking gear;

[0147] Test unit 630 is used to perform train emergency braking rate deviation test based on the first emergency braking rate dataset and the second emergency braking rate dataset, and output the train emergency braking rate deviation test result.

[0148] The train emergency braking rate deviation test system described in this embodiment can be used to execute the above-described train emergency braking rate deviation test method embodiment. Its principle and technical effect are similar, and will not be repeated here.

[0149] The train emergency braking rate deviation testing system of this invention acquires operational test datasets of multiple emergency braking tests conducted by the train at high and low braking gears. It then extracts emergency braking rate datasets for each braking gear from these datasets and uses them to perform emergency braking rate deviation tests. By analyzing these datasets, it can determine whether the emergency braking rate deviations at high and low braking gears meet technical standards. Based on the results, it outputs the train's emergency braking rate deviation test results. This system can accurately verify the emergency braking rate deviations of train formations at high and low braking gears, objectively and accurately assessing these deviations. It fills the technical gap in emergency braking rate testing and verification for urban rail virtual train formation technology, and helps improve the safety and reliability of urban rail virtual train formation operation.

[0150] Figure 7 This is a schematic diagram of the physical structure of the electronic device provided by the present invention, such as... Figure 7 As shown, the electronic device may include a processor 710, a communication interface 720, a memory 730, and a communication bus 740, wherein the processor 710, the communication interface 720, and the memory 730 communicate with each other through the communication bus 740. The processor 710 can call logical instructions in the memory 730 to execute the train emergency braking rate deviation test method provided by the above methods. The method includes: acquiring a running test dataset of multiple emergency braking tests performed on the train at a first braking gear and a second braking gear, respectively; extracting a first emergency braking rate dataset at the first braking gear and a second emergency braking rate dataset at the second braking gear from the running test dataset; wherein the first braking gear is higher than the second braking gear; performing a train emergency braking rate deviation test based on the first emergency braking rate dataset and the second emergency braking rate dataset, and outputting the train emergency braking rate deviation test result.

[0151] Furthermore, the logical instructions in the aforementioned memory 730 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, 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 described in the various embodiments of the present 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.

[0152] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the train emergency braking rate deviation test method provided by the above methods. The method includes: acquiring a running test dataset of multiple emergency braking tests performed on the train at a first braking gear and a second braking gear, respectively; extracting a first emergency braking rate dataset at the first braking gear and a second emergency braking rate dataset at the second braking gear from the running test dataset; wherein the first braking gear is higher than the second braking gear; performing a train emergency braking rate deviation test based on the first emergency braking rate dataset and the second emergency braking rate dataset; and outputting the emergency braking rate deviation test result of the train.

[0153] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements a train emergency braking rate deviation testing method provided by the above methods. The method includes: acquiring a running test dataset of multiple emergency braking tests performed on a train at a first braking gear and a second braking gear, respectively; extracting a first emergency braking rate dataset at the first braking gear and a second emergency braking rate dataset at the second braking gear from the running test dataset; wherein the first braking gear is higher than the second braking gear; performing a train emergency braking rate deviation test based on the first emergency braking rate dataset and the second emergency braking rate dataset; and outputting the train emergency braking rate deviation test result.

[0154] The device embodiments described above are merely illustrative. 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 modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0155] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0156] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for testing the deviation of train emergency braking rate, characterized in that, include: Obtain the operational test dataset of multiple emergency braking tests conducted on the train in the first braking gear and the second braking gear respectively. Extract the first emergency braking rate dataset under the first braking gear and the second emergency braking rate dataset under the second braking gear from the running test dataset; The first braking gear is higher than the second braking gear; According to the preset confidence level, data fitting calculations are performed on the first emergency braking rate dataset and the second emergency braking rate dataset to obtain the first confidence interval of the emergency braking rate data distribution corresponding to the first braking gear and the second confidence interval of the emergency braking rate data distribution corresponding to the second braking gear. Based on the lower boundary value of the first confidence interval and the first preset deviation value, determine the lower deviation value of the emergency braking rate corresponding to the first braking gear; Based on the upper boundary value of the second confidence interval and the second preset deviation value, determine the upper deviation value of the emergency braking rate corresponding to the second braking gear; If the lower deviation value of the emergency braking rate is greater than the upper deviation value of the emergency braking rate, the emergency braking rate deviation test result of the train is output as passed; otherwise, the emergency braking rate deviation test result of the train is output as failed.

2. The train emergency braking rate deviation test method according to claim 1, characterized in that, The step of extracting the first emergency braking rate dataset under the first braking gear and the second emergency braking rate dataset under the second braking gear from the running test dataset includes: If the number of emergency braking tests performed on the train in the first braking gear is greater than a first threshold, the first emergency braking rate dataset is extracted from the operational test dataset. If the number of emergency braking tests conducted when the train is in the second braking gear exceeds a second threshold, the second emergency braking rate dataset is extracted from the operational test dataset.

3. The train emergency braking rate deviation test method according to claim 1, characterized in that, Before acquiring the operational test dataset of multiple emergency braking tests conducted on the train in the first braking gear and the second braking gear respectively, the method further includes: In each emergency braking test scenario, if the train successfully performs emergency braking at the target initial speed, raw operating data for each test scenario is collected; the target initial speed is determined based on the test scenario set for each emergency braking test. The original running data is cleaned to obtain the running test data for each test scenario; The running test dataset is obtained based on the running test data in each test scenario.

4. A train emergency braking rate deviation testing system, characterized in that, include: The acquisition unit is used to acquire the operational test dataset of the train undergoing multiple emergency braking tests in the first braking gear and the second braking gear respectively. The extraction unit is used to extract a first emergency braking rate dataset under the first braking gear and a second emergency braking rate dataset under the second braking gear from the running test dataset; the first braking gear is higher than the second braking gear. Test unit, used for: According to the preset confidence level, data fitting calculations are performed on the first emergency braking rate dataset and the second emergency braking rate dataset to obtain the first confidence interval of the emergency braking rate data distribution corresponding to the first braking gear and the second confidence interval of the emergency braking rate data distribution corresponding to the second braking gear. Based on the lower boundary value of the first confidence interval and the first preset deviation value, determine the lower deviation value of the emergency braking rate corresponding to the first braking gear; Based on the upper boundary value of the second confidence interval and the second preset deviation value, determine the upper deviation value of the emergency braking rate corresponding to the second braking gear; If the lower deviation value of the emergency braking rate is greater than the upper deviation value of the emergency braking rate, the emergency braking rate deviation test result of the train is output as passed; otherwise, the emergency braking rate deviation test result of the train is output as failed.

5. A train emergency braking rate deviation testing device, characterized in that, include: The system includes a data acquisition module, a data analysis module, a data calculation module, and a test result output module. The data acquisition module, the data analysis module, the data calculation module, and the test result output module are connected in sequence; The data acquisition module is used to collect the raw operating data of the train during each emergency braking test at the first braking gear and the second braking gear, respectively; the first braking gear is higher than the second braking gear. The data analysis module is used to receive the raw operating data sent by the data acquisition module, and to perform data preprocessing on the raw operating data to obtain an operating test dataset of the train performing multiple emergency braking tests in the first braking gear and the second braking gear respectively. Extract the first emergency braking rate dataset under the first braking gear and the second emergency braking rate dataset under the second braking gear from the running test dataset; The data calculation module is used to receive the first emergency braking rate dataset and the second emergency braking rate dataset sent by the data analysis module, and perform data fitting calculation on the first emergency braking rate dataset and the second emergency braking rate dataset according to a preset confidence level to obtain the first confidence interval of the emergency braking rate data distribution corresponding to the first braking gear and the second confidence interval of the emergency braking rate data distribution corresponding to the second braking gear. And based on the lower boundary value of the first confidence interval and the first preset deviation value, the lower deviation value of the emergency braking rate corresponding to the first braking gear is determined, and based on the upper boundary value of the second confidence interval and the second preset deviation value, the upper deviation value of the emergency braking rate corresponding to the second braking gear is determined. The test result output module is used to receive the lower deviation value and the upper deviation value of the emergency braking rate sent by the data calculation module, and outputs the emergency braking rate deviation test result of the train as passed if the lower deviation value of the emergency braking rate is greater than the upper deviation value of the emergency braking rate; otherwise, it outputs the emergency braking rate deviation test result of the train as failed.

6. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the train emergency braking rate deviation test method as described in any one of claims 1 to 3.

7. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the train emergency braking rate deviation test method as described in any one of claims 1 to 3.

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