Test method and device based on soft wall collision model

Abstract

The invention provides a test method and device based on a soft wall collision model, and the method comprises the steps: carrying out the calculation of the current speed and current position of a front vehicle based on the soft wall collision model, and obtaining a theoretical mobile authority point of a rear vehicle after the execution of a soft wall collision test; comparing the actual parking point of the rear vehicle after the soft wall collision test with the theoretical mobile authority point of the rear vehicle to obtain a test result of the current period; the model parameters of the soft wall collision model comprise the safety margin and the braking deceleration of the front vehicle. According to the method provided by the invention, the current speed and the current position of the front vehicle are applied through the soft wall collision model, the theoretical mobile authority point of the rear vehicle after the soft wall collision test is calculated, and the model parameters of the soft wall collision model are adjusted based on comparison between the actual parking point of the rear vehicle and the theoretical mobile authority point of the rear vehicle, so that de-artificial operation is realized; and the soft wall collision model is efficiently and accurately tested and verified, so that the safety and the transport capacity of the train operation protection system constructed based on the soft wall collision model are improved.

Description

Technical Field

[0001] The present invention relates to the field of rail transit technology, and in particular to a testing method and device based on a soft wall collision model. Background Art

[0002] With the acceleration of my country's national economic development and urbanization, rail transit is facing the demand for shorter running intervals, faster speeds, and more passengers, which has become an important means to alleviate traffic pressure. At present, in the train operation control system based on mobile block, there are two technical means of "hitting the hard wall" and "hitting the soft wall" to protect the speed of trains. Compared with the "hitting the hard wall" method with a larger tracking interval, the "hitting the soft wall" shortens the train tracking interval and improves operational efficiency. However, the safety of "hitting the soft wall" needs to be verified before it is actually used. The current test method is mainly to verify and calculate the acquired train operation data manually.

[0003] However, the method based on manual verification calculation requires a lot of manpower and time costs, and the error rate of manual calculation is relatively large, resulting in low accuracy of the verification results. Summary of the invention

[0004] The present invention provides a testing method and device based on a soft wall collision model, which are used to solve the defects of low efficiency and large error rate of manual verification calculation in the prior art.

[0005] The present invention provides a testing method based on a soft wall collision model, comprising: Get the current speed and position of the preceding vehicle in the current cycle; Based on the soft wall collision model, the current speed of the leading vehicle and the current position of the leading vehicle are applied to calculate a theoretical movement authorization point of the following vehicle after performing the soft wall collision test; The test result of the soft wall collision model in the current cycle is obtained by comparing the actual parking point of the rear vehicle after the front vehicle and the rear vehicle perform the soft wall collision test with the theoretical movement authorization point of the rear vehicle; The model parameters of the soft wall collision model include a safety margin and a braking deceleration of the preceding vehicle; the test results are used to adjust the model parameters of the soft wall collision model.

[0006] According to a test method based on a soft wall collision model provided by the present invention, the front vehicle braking deceleration is the maximum front vehicle braking deceleration; The method of applying the current speed of the leading vehicle and the current position of the leading vehicle based on the soft wall collision model to calculate a theoretical movement authorization point of the following vehicle after performing the soft wall collision test includes: Based on the soft wall collision model, the current speed of the front vehicle, the current position of the front vehicle and the maximum front vehicle braking deceleration are applied to calculate an equivalent parking point of the front vehicle; The safety margin is withdrawn from the equivalent parking point of the leading vehicle, and the theoretical movement authorization point of the trailing vehicle is calculated.

[0007] According to a test method based on a soft wall collision model provided by the present invention, the method of calculating the equivalent stopping point of the front vehicle based on the soft wall collision model by applying the current speed of the front vehicle, the current position of the front vehicle and the maximum braking deceleration of the front vehicle includes: ; in, Indicates the equivalent parking point of the preceding vehicle; Indicates the current position of the preceding vehicle; Indicates the current speed of the preceding vehicle; Indicates the maximum braking deceleration of the preceding vehicle; They respectively represent the first model parameter and the second model parameter of the soft wall collision model.

[0008] According to a test method based on a soft wall collision model provided by the present invention, the obtaining of the current speed and the current position of the preceding vehicle in the current cycle includes: Obtaining the operation log information of the preceding vehicle in the current cycle; Based on a regular expression, the current speed of the preceding vehicle and the current position of the preceding vehicle are obtained by matching from the operation log information.

[0009] According to a test method based on a soft wall collision model provided by the present invention, the actual parking point of the rear vehicle after the front vehicle and the rear vehicle perform a soft wall collision test is compared with the theoretical movement authorization point of the rear vehicle to obtain the current cycle test result of the soft wall collision model, including: Determine the interval distance between the actual parking point of the following vehicle and the theoretical movement authorization point of the following vehicle; When the actual parking point of the rear vehicle does not exceed the theoretical movement authorization point of the rear vehicle, and the interval distance is less than the interval threshold, the test result of the current cycle is a test pass; When the actual parking point of the rear vehicle exceeds the theoretical movement authorization point of the rear vehicle, or the interval distance is greater than the interval threshold, the test result of the current cycle is test failure.

[0010] According to a test method based on a soft wall collision model provided by the present invention, the actual parking point of the rear vehicle after the front vehicle and the rear vehicle perform a soft wall collision test is compared with the theoretical movement authorization point of the rear vehicle to obtain the current cycle test result of the soft wall collision model, and then includes: Generate a test report based on the cycle number of the current cycle, the current speed of the leading vehicle, the current position of the leading vehicle, the actual parking point of the rear vehicle after performing the soft wall crash test, the rear vehicle operating parameters, the model parameters of the soft wall crash model, and the test results of the current cycle; The data in the test report when the test result of the current cycle is a failure is analyzed to adjust the model parameters of the soft wall collision model.

[0011] The present invention also provides a testing device based on a soft wall collision model, comprising: An acquisition unit is used to acquire the current speed and position of the preceding vehicle in the current cycle; A model calculation unit, based on a soft wall collision model, applies the current speed of the leading vehicle and the current position of the leading vehicle to calculate a theoretical movement authorization point of the following vehicle after performing a soft wall collision test; A testing unit, based on comparing the actual parking point of the rear vehicle after the front vehicle and the rear vehicle perform a soft wall collision test with the theoretical movement authorization point of the rear vehicle, obtains a current cycle test result of the soft wall collision model; The model parameters of the soft wall collision model include a safety margin and a braking deceleration of the preceding vehicle; the test results are used to adjust the model parameters of the soft wall collision model.

[0012] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the test method based on the soft wall model as described above is implemented.

[0013] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the test method based on the soft wall model as described in any one of the above is implemented.

[0014] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements any of the above-mentioned testing methods based on the soft wall model.

[0015] The testing method and device based on the soft wall collision model provided by the present invention apply the current speed and current position of the leading vehicle to the soft wall collision model to calculate the theoretical movement authorization point of the rear vehicle after executing the soft wall collision test, compare the actual stopping point of the rear vehicle after the leading vehicle and the rear vehicle execute the soft wall collision test with the theoretical movement authorization point, adjust the model parameters of the soft wall collision model, realize the de-manualization, efficient and accurate test verification of the soft wall collision model, and thus improve the safety and capacity of the train operation protection system constructed based on the soft wall collision model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is one of the flow charts of the test method based on the soft wall model provided by the present invention; Figure 2 It is a schematic diagram of the principle of the soft wall collision model provided by the present invention; Figure 3 This is the second flow chart of the testing method based on the soft wall model provided by the present invention; Figure 4 It is one of the structural schematic diagrams of the test device based on the soft wall collision model provided by the present invention; Figure 5 This is the second structural schematic diagram of the testing device based on the soft wall model provided by the present invention; Figure 6 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] It should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0020] It should be noted that the soft wall model has gradually become a research hotspot in the field of rail transit. It fully considers the dynamic information of the position, speed, acceleration, and operation status of the leading vehicle, and optimizes the allocation of the running space and time resources of the following vehicle by predicting the dynamic space-time trajectory of the leading vehicle, thereby further reducing the train running interval and improving the system capacity. However, the current indoor verification of the "soft wall" model uses manual calculation methods, which is inefficient and has a high error rate.

[0021] To solve this problem, the present invention provides a testing method based on a soft wall collision model to achieve efficient and accurate testing of the soft wall collision model. Figure 1 This is one of the flow charts of the test method based on the soft wall model provided by the present invention, such as Figure 1 As shown, the method includes: Step 110, obtaining the current speed and current position of the preceding vehicle in the current cycle.

[0022] Here, the current cycle refers to the train operation cycle currently being executed, and the train operation cycle here may refer to the time period for operation according to a predetermined schedule and route. In addition, the current speed and current position of the leading vehicle here refer to the real-time speed and real-time position of the leading vehicle when the rear vehicle is about to have a soft wall collision with the leading vehicle in the current cycle.

[0023] Specifically, by configuring an IP address in the same network segment as the train control system, a remote link can be established with the leading and trailing vehicles, so as to obtain the current speed and position of the leading vehicle in the current cycle in real time.

[0024] Step 120, based on the soft wall collision model, the current speed of the front vehicle and the current position of the front vehicle are applied to calculate the theoretical movement authorization point of the rear vehicle after performing the soft wall collision test; the model parameters of the soft wall collision model include a safety margin and a braking deceleration of the front vehicle.

[0025] Here, the soft wall collision model may refer to a mathematical model that is used to calculate the safe movement authorization point for the following vehicle through the real-time data of the leading vehicle. By constructing reasonable model parameters, the necessary safe interval distance between the leading and trailing vehicles can be effectively shortened, while ensuring the safety and efficiency of the train operation.

[0026] In addition, the model parameters of the soft wall collision model here include the safety margin and the braking deceleration of the leading vehicle. The safety margin here refers to the additional distance reserved in order to increase safety at the calculated position where the leading vehicle may stop. The braking deceleration of the leading vehicle here can be used to reflect how fast the leading vehicle decelerates under emergency braking. Therefore, the model parameters of the soft wall collision model will directly affect the accuracy of the theoretical movement authorization point of the rear vehicle predicted by the soft wall collision model, and thus affect whether the leading and rear vehicles can successfully hit the soft wall.

[0027] Specifically, the current speed and position of the front vehicle can be input into the soft wall collision model, and the model parameters and mathematical calculation formulas set in the soft wall collision model are used to calculate the theoretical movement authorization point of the rear vehicle after the soft wall collision test. It can be understood that by calculating the theoretical movement authorization point of the rear vehicle through the soft wall collision model, the calculation of the theoretical movement authorization point of the rear vehicle can be de-manualized, which reduces the pressure on testers and improves the accuracy and efficiency of soft wall collision test verification.

[0028] It should be noted that the theoretical movement authorization point of the rear vehicle here refers to the farthest position where the rear vehicle can stop safely without colliding with the front vehicle in an emergency. Therefore, the accuracy and practicality of the soft wall collision model can be verified by executing step 130.

[0029] Step 130, based on the comparison between the actual parking point of the rear vehicle after the front vehicle and the rear vehicle perform the soft wall collision test and the theoretical movement authorization point of the rear vehicle, the current cycle test result of the soft wall collision model is obtained; the test result is used to adjust the model parameters of the soft wall collision model.

[0030] Specifically, the actual parking point of the rear vehicle after the front vehicle and the rear vehicle perform the soft wall collision test can be obtained. Then, the actual parking point of the rear vehicle and the theoretical movement authorization point of the rear vehicle can be compared to obtain the current cycle test result of the soft wall collision model to reflect the accuracy and practicality of the soft wall collision model.

[0031] In detail, by comparing the actual position of the rear vehicle's actual stopping point and the rear vehicle's theoretical movement authorization point on the train track, when the rear vehicle's actual stopping point does not exceed the rear vehicle's theoretical movement authorization point, it indicates that the rear vehicle's theoretical movement authorization point predicted by the soft wall collision model is reasonable, and the periodic test result is a passed test; in addition, when the rear vehicle's actual stopping point exceeds the rear vehicle's theoretical movement authorization point, it indicates that the rear vehicle's theoretical movement authorization point predicted by the soft wall collision model is unreasonable, and the rear vehicle's actual parking position exceeds the position corresponding to the theoretical movement authorization point, then the rear vehicle may be at risk of colliding with the front vehicle, and the periodic test result is a failed test.

[0032] It should be noted that by analyzing the test results of the current period, the model parameters of the soft wall collision model can be adjusted and optimized. Under the premise of ensuring the calculation accuracy of the soft wall collision model, the practicality of the soft wall collision model can be further improved, that is, the capacity of the train operation protection system built based on the soft wall collision model can be improved. Therefore, the adjusted and optimized soft wall collision model can be applied to the train operation protection system to achieve safe and high-capacity train operation protection.

[0033] It is understandable that if the periodic test result is a test failure, it means that the accuracy of the soft wall collision model calculation prediction is not high, which means that the model parameters of the soft wall collision model are not reasonable. For example, when the periodic test result is a test failure, the value of the safety margin can be increased.

[0034] The method provided by the embodiment of the present invention applies the current speed and current position of the leading vehicle to the soft wall collision model, calculates the theoretical movement authorization point of the rear vehicle after executing the soft wall collision test, compares the actual stopping point of the rear vehicle after the leading vehicle and the rear vehicle execute the soft wall collision test with the theoretical movement authorization point, adjusts the model parameters of the soft wall collision model, realizes the de-manualization, efficient and accurate test verification of the soft wall collision model, and thus improves the safety and capacity of the train operation protection system constructed based on the soft wall collision model.

[0035] Based on any of the above embodiments, step 120 includes: Based on the soft wall collision model, the current speed of the front vehicle, the current position of the front vehicle and the maximum front vehicle braking deceleration are applied to calculate an equivalent parking point of the front vehicle; The safety margin is withdrawn from the equivalent parking point of the leading vehicle, and the theoretical movement authorization point of the trailing vehicle is calculated.

[0036] Here, the braking deceleration of the preceding vehicle may be the maximum braking deceleration of the preceding vehicle, which refers to the fastest deceleration speed of the preceding vehicle in the case of emergency braking, and may be obtained through comprehensive evaluation based on the performance of the train and historical emergency braking experience. In addition, the equivalent stopping point of the preceding vehicle here refers to the position where the preceding vehicle is predicted to stop in the case of emergency braking.

[0037] Specifically, first, the current speed and position of the front vehicle can be input into the soft wall collision model, and the current speed and position of the front vehicle can be substituted into the mathematical formula constructed by model parameters such as the maximum front vehicle braking deceleration to calculate the equivalent parking point of the front vehicle.

[0038] It should be noted that the braking deceleration of the leading vehicle in the soft wall collision model here is the maximum braking deceleration of the leading vehicle. The equivalent stopping point of the leading vehicle calculated based on the maximum braking deceleration of the leading vehicle can be considered as the point closest to the final stopping position of the following vehicle, that is, the point where the final stopping distance between the leading vehicle and the following vehicle is the shortest. Therefore, the ability of the soft wall collision model to reduce the running interval of trains and improve train capacity can be verified.

[0039] Then, after calculating the equivalent stopping point of the leading vehicle, in order to further improve the safety of train operation, the safety margin will be withdrawn from the equivalent stopping point of the leading vehicle, and the theoretical movement authorization point of the rear vehicle will be calculated. The theoretical movement authorization point of the rear vehicle here is the farthest position where the rear vehicle can continue to travel while maintaining a safe distance from the leading vehicle. It should be noted that once the rear vehicle exceeds this point, it may face the risk of collision with the leading vehicle. Therefore, the train operation protection system will monitor the position of the rear vehicle in real time and take braking measures when necessary to ensure that the rear vehicle always remains within the theoretical movement authorization point.

[0040] In one embodiment, Figure 2 Schematic diagram of the principle of the soft wall collision model provided by the present invention, such as Figure 2 As shown, a coordinate system can be constructed in which the horizontal axis represents the distance traveled by the train on the track and the vertical axis represents the speed of the train. Train 1 represents the front train, train 2 represents the rear train, and the green area where the train is located represents the safety envelope of the train. Figure 2 In the figure, the solid parabola represents the emergency braking curve of Train 1 (front car), and the intersection of the emergency braking curve of Train 1 (front car) and the horizontal axis represents the equivalent stopping point of the front car of Train 1 (front car). The dotted parabola represents the emergency braking curve of Train 2 (rear car), and the distance between this emergency braking curve and the equivalent stopping point of the front car represents the safety margin. The intersection of the emergency braking curve of Train 2 (rear car) and the horizontal axis represents the theoretical movement authorization point of the rear car of Train 2 (rear car). It can be understood that if the actual stopping point of Train 2 (rear car) is behind the theoretical movement authorization point of the rear car, it means that the soft wall model test has passed.

[0041] The method provided in an embodiment of the present invention applies the current speed of the leading vehicle, the current position of the leading vehicle and the maximum braking deceleration of the leading vehicle through the soft wall collision model to calculate the equivalent stopping point of the leading vehicle; and withdraws a safety margin for the equivalent stopping point of the leading vehicle to calculate the theoretical movement authorization point of the rear vehicle, thereby accurately realizing the verification of the practicality of the soft wall collision model and the efficiency of train operation.

[0042] Based on any of the above embodiments, the method of calculating the equivalent parking point of the front vehicle based on the soft wall collision model by applying the current speed of the front vehicle, the current position of the front vehicle and the maximum braking deceleration of the front vehicle includes: ; in, Indicates the equivalent parking point of the preceding vehicle; Indicates the current position of the preceding vehicle; Indicates the current speed of the vehicle ahead; Indicates the maximum braking deceleration of the vehicle ahead; They respectively represent the first model parameter and the second model parameter of the soft wall collision model.

[0043] Specifically, based on the soft wall collision model, the current speed of the front vehicle, the current position of the front vehicle, and the maximum braking deceleration of the front vehicle are used to calculate the equivalent stopping point of the front vehicle, which can be achieved by the following formula, as shown in the following formula: ; in, Indicates the equivalent stopping point of the preceding vehicle; Indicates the current position of the preceding vehicle; Indicates the current speed of the preceding vehicle; Indicates the maximum braking deceleration of the preceding vehicle; Respectively represent the first model parameter and the second model parameter of the soft wall collision model. The value of can be 3, The value of can be 2.

[0044] Therefore, the theoretical movement authorization point of the following vehicle can be calculated by the following formula, as shown below: ; In the formula, Indicates the theoretical movement authorization point of the following vehicle; Indicates safety margin.

[0045] It should be noted that, in the process of testing and verifying the soft wall collision model, the model parameters of the soft wall collision model can be adjusted according to the test results of the current period to ensure the correctness of the soft wall collision model.

[0046] Based on any of the above embodiments, step 110 includes: Obtaining the operation log information of the preceding vehicle in the current cycle; Based on a regular expression, the current speed of the preceding vehicle and the current position of the preceding vehicle are obtained by matching from the operation log information.

[0047] Specifically, the running log information of the train in the current cycle can be captured in real time, and the running log information can reflect the speed, position, acceleration and other parameter information of the train during operation. It should be noted that the parameter types in the running log information here include multiple types, and not every parameter is required to verify the soft wall collision model. Therefore, the current speed and current position of the preceding vehicle can be matched from the running log information through a pre-built regular expression.

[0048] Specifically, the current speed and position of the preceding vehicle can be used as target parameters, and then a regular expression can be constructed according to the parameter type, parameter generation time, train number and other parameter conditions of the target parameters. Then, the current speed and position of the preceding vehicle that meet the conditions can be matched from the complex log information through the regular expression.

[0049] It should be noted that by obtaining the operation log information of the front vehicle in the current period; based on regular expressions, the current speed and current position of the front vehicle are matched from the operation log information, thereby realizing automatic data acquisition and improving the efficiency of soft wall collision model test verification.

[0050] Based on any of the above embodiments, step 130 includes: Determine the interval distance between the actual parking point of the following vehicle and the theoretical movement authorization point of the following vehicle; When the actual parking point of the rear vehicle does not exceed the theoretical movement authorization point of the rear vehicle, and the interval distance is less than the interval threshold, the test result of the current cycle is a test pass; When the actual parking point of the rear vehicle exceeds the theoretical movement authorization point of the rear vehicle, or the interval distance is greater than the interval threshold, the test result of the current cycle is test failure.

[0051] Here, the distance between the actual parking point of the rear vehicle and the theoretical movement authorization point of the rear vehicle can be used to reflect the correctness and practicality of the soft wall collision model. In addition, the interval threshold here can be used to reflect the practicality of the soft wall collision model.

[0052] It is understandable that the larger the interval distance, the less accurate the model parameters of the soft wall collision model. For example, if the safety margin is too large, the rear vehicle needs to perform emergency braking in advance, reducing the train capacity of the rear vehicle. The smaller the interval distance, the more accurate the model parameters of the soft wall collision model, which enables the rear vehicle to maximize the authorized movable distance of the train while ensuring the safety of the train.

[0053] Specifically, a coordinate axis can be established, and the positions of the theoretical movement authorization point of the rear vehicle and the actual parking point of the rear vehicle can be represented on the coordinate axis. Then, the interval distance can be obtained by subtracting the horizontal coordinate of the actual parking point of the rear vehicle from the horizontal coordinate of the theoretical movement authorization point of the rear vehicle. Then, when the actual parking point of the rear vehicle does not exceed the theoretical movement authorization point of the rear vehicle, and the interval distance is less than the interval threshold, that is, when the interval distance is greater than 0 and less than the interval threshold, it means that the model parameters of the soft wall collision model are correct and practical. Then, when the periodic test result is the test passed,.

[0054] In addition, when the actual parking point of the rear vehicle exceeds the theoretical movement authorization point of the rear vehicle, it means that the theoretical movement authorization point of the rear vehicle predicted by the soft wall collision model is inaccurate. The actual parking position of the rear vehicle exceeds the position corresponding to the theoretical movement authorization point, and the rear vehicle may be at risk of colliding with the front vehicle, and the test result of the cycle is a test failure. Alternatively, if the interval distance is greater than the interval threshold, it means that the theoretical movement authorization point of the rear vehicle predicted by the soft wall collision model is inaccurate. For example, if the safety margin is too large, the rear vehicle needs to perform emergency braking in advance, reducing the train capacity of the rear vehicle, and then the test result of the cycle is a test failure.

[0055] The method provided by the embodiment of the present invention determines the interval distance between the actual stopping point of the rear vehicle and the theoretical movement authorization point of the rear vehicle, and obtains the test result of the current period by comparing the sizes of the interval distances. It not only verifies the accuracy of the soft wall collision model, but also verifies its practicality, and realizes that the train's carrying capacity is improved as much as possible while ensuring the safe operation of the train.

[0056] Based on any of the above embodiments, after step 130, the following steps are included: Generate a test report based on the cycle number of the current cycle, the current speed of the leading vehicle, the current position of the leading vehicle, the actual parking point of the rear vehicle after performing the soft wall crash test, the rear vehicle operating parameters, the model parameters of the soft wall crash model, and the test results of the current cycle; The data in the test report when the test result of the current cycle is a failure is analyzed to adjust the model parameters of the soft wall collision model.

[0057] Specifically, after completing the test verification of a single current cycle, a test report can be generated with the cycle number of the current cycle, the current speed of the front vehicle, the current position of the front vehicle, the actual parking point of the rear vehicle after performing the soft wall test, the rear vehicle operating parameters, the model parameters of the soft wall model, and the test results of the current cycle. Among them, the rear vehicle operating parameters include parameter information such as the current speed of the rear vehicle and the acceleration of the rear vehicle.

[0058] Then, after completing the test verification of each current cycle, the above parameter information can be updated in the test report. Therefore, the test report can be constructed by using the cycle number of the current cycle as an identifier.

[0059] Finally, the data in the test report when the test result of the cycle is not passed can be analyzed to adjust the model parameters of the soft wall collision model to obtain a soft wall collision model with more accurate and practical prediction.

[0060] Based on any of the above embodiments, Figure 3 This is the second flow chart of the test method based on the soft wall model provided by the present invention, such as Figure 3 As shown, start by extracting the current speed of the train from the previous train running data Then, extract the current position of the preceding vehicle in the running data Next, calculate the equivalent parking position of the front vehicle , the equivalent parking position of the front vehicle here can be achieved by this formula: ; Furthermore, the theoretical authorized end point of the following vehicle is calculated , where the theoretical authorized end point of the rear vehicle can be the equivalent parking position of the front vehicle and safety margin The calculation can be achieved through the following formula: ; Then, extract the actual authorized end point of the vehicle movement Finally, compare the calculated theoretical value of the following vehicle with the actual value of the following vehicle, that is, compare the theoretical movement authorization end point of the following vehicle and the actual movement authorization end point of the following vehicle The comparison results and the real-time data generated during the train operation are used to generate a report. Then, the real-time data extraction and soft wall collision model test of the next cycle are performed to realize the cycle.

[0061] For example, Figure 4 is one of the structural schematic diagrams of the test device based on the soft wall model provided by the present invention, such as Figure 4 As shown, the main program modules corresponding to the device include: data extraction module, formula calculation module, result comparison module and report generation module. The data extraction module is used to extract train operation data in real time; the formula calculation module is used to calculate the equivalent parking position of the leading vehicle and the theoretical authorized end point of the rear vehicle; the result comparison module is used to compare the theoretical authorized end point of the rear vehicle and the actual authorized end point of the rear vehicle; the report generation module is used to generate a report based on the comparison results and the data generated in real time during the train operation.

[0062] Based on any of the above embodiments, Figure 5 This is a second structural schematic diagram of a test device based on a soft wall model provided by the present invention, such as Figure 5 As shown, the device comprises: An acquisition unit 510 acquires the current speed and the current position of the preceding vehicle in the current cycle; A model calculation unit 520 calculates a theoretical movement authorization point of the rear vehicle after performing a soft wall collision test by applying the current speed of the front vehicle and the current position of the front vehicle based on a soft wall collision model; The testing unit 530 compares the actual parking point of the rear vehicle after the front vehicle and the rear vehicle perform the soft wall collision test with the theoretical movement authorization point of the rear vehicle to obtain the current cycle test result of the soft wall collision model; The model parameters of the soft wall collision model include a safety margin and a braking deceleration of the preceding vehicle; the test results are used to adjust the model parameters of the soft wall collision model.

[0063] The device provided by the embodiment of the present invention applies the current speed and current position of the leading vehicle to the soft wall collision model, calculates the theoretical movement authorization point of the rear vehicle after executing the soft wall collision test, compares the actual stopping point of the rear vehicle after the leading vehicle and the rear vehicle execute the soft wall collision test with the theoretical movement authorization point, adjusts the model parameters of the soft wall collision model, realizes the de-manualization, efficient and accurate test verification of the soft wall collision model, and thus improves the safety and capacity of the train operation protection system constructed based on the soft wall collision model.

[0064] Based on any of the above embodiments, the front vehicle braking deceleration is the maximum front vehicle braking deceleration; The model calculation unit is specifically used for: Based on the soft wall collision model, the current speed of the front vehicle, the current position of the front vehicle and the maximum front vehicle braking deceleration are applied to calculate an equivalent parking point of the front vehicle; The safety margin is withdrawn from the equivalent parking point of the leading vehicle, and the theoretical movement authorization point of the trailing vehicle is calculated.

[0065] Based on any of the above embodiments, the model calculation unit is further specifically used for: ; in, Indicates the equivalent parking point of the preceding vehicle; Indicates the current position of the preceding vehicle; Indicates the current speed of the preceding vehicle; Indicates the maximum braking deceleration of the preceding vehicle; They respectively represent the first model parameter and the second model parameter of the soft wall collision model.

[0066] Based on any of the above embodiments, the acquiring unit is specifically used for: Obtaining the operation log information of the preceding vehicle in the current cycle; Based on a regular expression, the current speed of the preceding vehicle and the current position of the preceding vehicle are obtained by matching from the operation log information.

[0067] Based on any of the above embodiments, the testing unit is specifically used for: Determine the interval distance between the actual parking point of the following vehicle and the theoretical movement authorization point of the following vehicle; When the actual parking point of the rear vehicle does not exceed the theoretical movement authorization point of the rear vehicle, and the interval distance is less than the interval threshold, the test result of the current cycle is a test pass; When the actual parking point of the rear vehicle exceeds the theoretical movement authorization point of the rear vehicle, or the interval distance is greater than the interval threshold, the test result of the current cycle is test failure.

[0068] Based on any of the above embodiments, the test unit further comprises a report generating unit, and the report generating unit is specifically used for: Generate a test report based on the cycle number of the current cycle, the current speed of the leading vehicle, the current position of the leading vehicle, the actual parking point of the rear vehicle after performing the soft wall crash test, the rear vehicle operating parameters, the model parameters of the soft wall crash model, and the test results of the current cycle; The data in the test report when the test result of the current cycle is a failure is analyzed to adjust the model parameters of the soft wall collision model.

[0069] Figure 6 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 6As shown, the electronic device may include: a processor 610, a communication interface 620, a memory 630 and a communication bus 640, wherein the processor 610, the communication interface 620 and the memory 630 communicate with each other through the communication bus 640. The processor 610 may call the logic instructions in the memory 630 to execute a test method based on the soft wall model, the method comprising: obtaining the current speed of the front vehicle and the current position of the front vehicle in the current cycle; applying the current speed of the front vehicle and the current position of the front vehicle based on the soft wall model to calculate the theoretical movement authorization point of the rear vehicle after the soft wall test; comparing the actual parking point of the rear vehicle after the front vehicle and the rear vehicle perform the soft wall test with the theoretical movement authorization point of the rear vehicle to obtain the current cycle test result of the soft wall model; the model parameters of the soft wall model include a safety margin and a braking deceleration of the front vehicle; the test results are used to adjust the model parameters of the soft wall model.

[0070] In addition, the logic instructions in the above-mentioned memory 630 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0071] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program 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 test method based on the soft wall model provided by the above-mentioned methods, which includes: obtaining the current speed of the front vehicle and the current position of the front vehicle in the current cycle; applying the current speed of the front vehicle and the current position of the front vehicle based on the soft wall model to calculate the theoretical movement authorization point of the rear vehicle after performing the soft wall test; comparing the actual parking point of the rear vehicle after the front vehicle and the rear vehicle perform the soft wall test with the theoretical movement authorization point of the rear vehicle to obtain the test result of the soft wall model in the current cycle; the model parameters of the soft wall model include a safety margin and a braking deceleration of the front vehicle; and the test results are used to adjust the model parameters of the soft wall model.

[0072] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the test method based on the soft wall collision model provided by the above-mentioned methods, the method comprising: obtaining the current speed and the current position of the front vehicle in the current cycle; applying the current speed and the current position of the front vehicle based on the soft wall collision model to calculate the theoretical movement authorization point of the rear vehicle after performing the soft wall collision test; comparing the actual parking point of the rear vehicle after the front and rear vehicles perform the soft wall collision test with the theoretical movement authorization point of the rear vehicle to obtain the test result of the soft wall collision model in the current cycle; the model parameters of the soft wall collision model include a safety margin and a braking deceleration of the front vehicle; and the test results are used to adjust the model parameters of the soft wall collision model.

[0073] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0074] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A test method based on a soft wall model, characterized in that: include: Get the current speed and position of the preceding vehicle in the current cycle; Based on the soft wall collision model, the current speed of the leading vehicle and the current position of the leading vehicle are applied to calculate a theoretical movement authorization point of the following vehicle after performing the soft wall collision test; The test result of the soft wall collision model in the current cycle is obtained by comparing the actual parking point of the rear vehicle after the front vehicle and the rear vehicle perform the soft wall collision test with the theoretical movement authorization point of the rear vehicle; The model parameters of the soft wall collision model include a safety margin and a braking deceleration of the preceding vehicle; the test results are used to adjust the model parameters of the soft wall collision model.

2. The test method based on the soft wall model according to claim 1 is characterized in that: The front vehicle braking deceleration is the maximum front vehicle braking deceleration; The method of applying the current speed of the leading vehicle and the current position of the leading vehicle based on the soft wall collision model to calculate a theoretical movement authorization point of the following vehicle after performing the soft wall collision test includes: Based on the soft wall collision model, the current speed of the front vehicle, the current position of the front vehicle and the maximum front vehicle braking deceleration are applied to calculate an equivalent parking point of the front vehicle; The safety margin is withdrawn from the equivalent parking point of the leading vehicle, and the theoretical movement authorization point of the trailing vehicle is calculated.

3. The test method based on the soft wall model according to claim 2 is characterized in that: The calculating the equivalent parking point of the front vehicle based on the soft wall collision model by applying the current speed of the front vehicle, the current position of the front vehicle and the maximum braking deceleration of the front vehicle includes: ； in, Indicates the equivalent parking point of the preceding vehicle; Indicates the current position of the preceding vehicle; Indicates the current speed of the preceding vehicle; Indicates the maximum braking deceleration of the preceding vehicle; They respectively represent the first model parameter and the second model parameter of the soft wall collision model.

4. The test method based on the soft wall model according to any one of claims 1 to 3, characterized in that: The obtaining of the current speed and the current position of the preceding vehicle in the current cycle includes: Obtaining the operation log information of the preceding vehicle in the current cycle; Based on a regular expression, the current speed of the preceding vehicle and the current position of the preceding vehicle are obtained by matching from the operation log information.

5. The test method based on the soft wall model according to any one of claims 1 to 3, characterized in that: The method of comparing the actual parking point of the rear vehicle after the front vehicle and the rear vehicle perform the soft wall collision test with the theoretical movement authorization point of the rear vehicle to obtain the current cycle test result of the soft wall collision model includes: Determine the interval distance between the actual parking point of the following vehicle and the theoretical movement authorization point of the following vehicle; When the actual parking point of the rear vehicle does not exceed the theoretical movement authorization point of the rear vehicle, and the interval distance is less than the interval threshold, the test result of the current cycle is a test pass; When the actual parking point of the rear vehicle exceeds the theoretical movement authorization point of the rear vehicle, or the interval distance is greater than the interval threshold, the test result of the current cycle is test failure.

6. The test method based on the soft wall model according to claim 5 is characterized in that: The actual parking point of the rear vehicle after the front vehicle and the rear vehicle perform the soft wall collision test and the theoretical movement authorization point of the rear vehicle are compared to obtain the current cycle test result of the soft wall collision model, and then include: Generate a test report based on the cycle number of the current cycle, the current speed of the leading vehicle, the current position of the leading vehicle, the actual parking point of the rear vehicle after performing the soft wall crash test, the rear vehicle operating parameters, the model parameters of the soft wall crash model, and the test results of the current cycle; The data in the test report when the test result of the current cycle is a failure is analyzed to adjust the model parameters of the soft wall collision model.

7. A test device based on a soft wall model, characterized in that: include: An acquisition unit is used to acquire the current speed and position of the preceding vehicle in the current cycle; A model calculation unit, based on a soft wall collision model, applies the current speed of the leading vehicle and the current position of the leading vehicle to calculate a theoretical movement authorization point of the following vehicle after performing a soft wall collision test; A testing unit, based on comparing the actual parking point of the rear vehicle after the front vehicle and the rear vehicle perform a soft wall collision test with the theoretical movement authorization point of the rear vehicle, obtains a current cycle test result of the soft wall collision model; The model parameters of the soft wall collision model include a safety margin and a braking deceleration of the preceding vehicle; the test results are used to adjust the model parameters of the soft wall collision model.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the test method based on the soft wall model as described in any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the test method based on the soft wall model as claimed in any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the test method based on the soft wall model as claimed in any one of claims 1 to 6 is implemented.

Images