Method and device for removing interference of motor train unit braking system, electronic equipment and medium

Abstract

The invention provides a motor train unit braking system interference removing method and device, electronic equipment and a medium, when the running speed of a to-be-detected motor train unit is increased to the target speed, a braking system is started for braking, and the port interference waveform of an I / O port of a braking controller and the frequency spectrum characteristic of the port interference waveform are obtained in the braking process; in addition, obtaining a standby wire frequency spectrum characteristic of a standby wire interference waveform on the standby wire; if the waveform frequency and / or amplitude of the frequency spectrum characteristic of the I / O port of the brake controller is different from the waveform frequency and / or amplitude of the frequency spectrum characteristic of the standby wire, the wire of the I / O port is replaced with a standby wire; and obtaining an updated spectrum feature after the brake controller I / O port is replaced by the standby wire, and if the updated spectrum feature is different from the spectrum feature of the original port, determining that the interference of the brake controller I / O port is removed. Therefore, the interference source does not need to be found and determined by consuming time, the interference is directly removed, and the efficiency of removing the interference of the braking system of the motor train unit is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electromagnetic interference detection, and in particular to a method, device, electronic equipment and medium for removing interference from a brake system of a motor vehicle. Background Art

[0002] High-speed EMUs use distributed power traction. The limited space makes the installation and wiring of on-board electronic and electrical equipment dense, and the electromagnetic interference transmission coupling is complex, resulting in electromagnetic interference failures, which poses a potential threat to the safety and reliability of EMU operation. Solving the interference problem often starts with the three elements of electromagnetic compatibility, among which identifying the interference source is the key element, and high-speed EMUs are no exception. However, it is precisely because of the complexity of the EMU electrical system, in which multiple devices on the EMU are electrically coupled to each other, and the interference source is difficult to determine. It is difficult and time-consuming to eliminate the interference source, resulting in low efficiency in removing interference from the EMU's braking system. Summary of the invention

[0003] In view of this, the purpose of the present application is to provide a method, device, electronic device and medium for removing interference from the braking system of an EMU, to obtain the spectral characteristics of the port interference waveform of the brake controller I / O port, and the spare line spectral characteristics of the spare wires. If there is a difference between the spare line spectral characteristics and the spectral characteristics of the port interference waveform, the spare wires are replaced to the brake controller I / O port, and the wires in the brake controller I / O port that currently has interference are directly replaced by the spare wires to remove the interference. There is no need to spend time looking for the interference source, which helps to improve the efficiency of removing interference from the braking system of the EMU.

[0004] In a first aspect, an embodiment of the present application provides a method for removing interference of a brake system of an EMU, the removal method comprising:

[0005] When the running speed of the EMU to be tested is increased to the target speed, the braking system is started to brake, and during the braking process, the port interference waveform of the I / O port of the brake controller and the frequency spectrum characteristics of the port interference waveform are obtained;

[0006] Acquire a standby line spectrum feature of a standby line interference waveform on a standby line; wherein the power supply port to which the standby line is connected is consistent with the power supply port to which the brake controller I / O port is connected;

[0007] If there is a difference in waveform frequency and / or amplitude between the port spectrum characteristic and the standby line spectrum characteristic, replacing the wire of the brake controller I / O port with a standby wire;

[0008] Obtain the updated spectrum characteristics after the brake controller I / O port is replaced with the backup wire. If the updated spectrum characteristics are different from the spectrum characteristics of the port interference waveform of the brake controller I / O before replacing the backup wire, and the brake controller is no longer disturbed, determine that the interference of the brake controller I / O port is removed.

[0009] In a possible implementation manner, the frequency spectrum characteristics of the port interference waveform are obtained by the following steps:

[0010] A fast Fourier transform analysis is performed on the port interference waveform, a rectangular window is used to obtain a first port spectrum feature of the port interference waveform, and a flat-top window is used to obtain a second port spectrum feature of the port interference waveform.

[0011] In a possible implementation, the port interference waveform of the brake controller I / O port is obtained by triggering an oscilloscope; one end of the oscilloscope is connected to the brake controller I / O port; the other end of the oscilloscope is connected to the power supply port of the EMU to be tested; and the trigger level of the oscilloscope is set to a first target trigger level.

[0012] In a possible implementation manner, the backup line frequency spectrum characteristics of the backup power line are obtained by the following steps:

[0013] When the running speed of the EMU to be tested is increased to the target speed, the braking system is started to brake, and during the braking process, the wire waveform of the spare wire is obtained through the oscilloscope connected to the spare wire;

[0014] A fast Fourier transform analysis is performed on the standby line interference waveform, a rectangular window is used to obtain a first standby line frequency spectrum feature of the standby line interference waveform, and a flat-top window is used to obtain a second standby line frequency spectrum feature of the standby line interference waveform.

[0015] In a possible implementation manner, the following steps are performed to determine whether there is a difference in waveform frequency and / or amplitude between the spectrum characteristics of the port interference waveform and the spectrum characteristics of the standby line:

[0016] If the waveform frequency and / or amplitude of the first port spectrum feature of the port spectrum feature is different from the waveform frequency and / or amplitude of the first backup line spectrum feature of the backup line spectrum feature, it is determined that the waveform frequency and / or amplitude of the spectrum feature of the port interference waveform is different from that of the backup line spectrum feature; and / or,

[0017] If the waveform frequency and / or amplitude of the second port spectrum characteristic of the port spectrum characteristic is different from the waveform frequency and / or amplitude of the second backup line spectrum characteristic of the backup line spectrum characteristic, it is determined that the waveform frequency and / or amplitude of the spectrum characteristic of the port interference waveform is different from that of the backup line spectrum characteristic.

[0018] In a possible implementation manner, after obtaining the updated spectrum characteristics after the brake controller I / O port is replaced with the spare wire, the removal method further includes:

[0019] If the difference in waveform frequency and / or amplitude between the updated spectrum characteristics and the spectrum characteristics of the port interference waveform of the brake controller I / O is less than a preset difference threshold, replace the spare wire, and obtain the spare line spectrum characteristics of the spare line interference waveform of the replaced spare wire again, and compare them with the spectrum characteristics of the port interference waveform of the brake controller I / O port, until the updated spectrum characteristics of the brake controller I / O port after replacing the spare wire are different from the spectrum characteristics of the port interference waveform of the brake controller I / O before replacing the wire, stop replacing the spare wire, and the brake controller is no longer disturbed, and determine that the interference of the brake controller I / O port has been removed.

[0020] In a possible implementation, the removal method further includes:

[0021] Acquire the standby line interference signal amplitude in the standby line frequency spectrum feature of the standby line interference waveform;

[0022] If the amplitude of the standby line interference signal is less than the preset interference signal amplitude, adjusting the trigger level of the oscilloscope to set the trigger level of the oscilloscope to a second target trigger level;

[0023] The second target trigger level is lower than the first target trigger level.

[0024] In a second aspect, an embodiment of the present application further provides a device for removing interference from a brake system of an EMU, the device comprising:

[0025] The port spectrum feature acquisition module is used to start the braking system for braking when the running speed of the EMU to be detected is increased to the target speed, and to obtain the port interference waveform of the I / O port of the brake controller and the spectrum feature of the port interference waveform during the braking process;

[0026] A standby line spectrum feature acquisition module, used to acquire the standby line spectrum feature of the standby line interference waveform on the standby electric line; wherein the power supply port connected to the standby electric line is consistent with the power supply port connected to the brake controller I / O port;

[0027] A wire replacement module, used to replace the wire of the I / O port of the brake controller with a spare wire if there is a difference in waveform frequency and / or amplitude between the spectrum characteristics of the port interference waveform and the spectrum characteristics of the spare line;

[0028] An interference removal module is used to obtain the updated spectrum characteristics after the brake controller I / O port is replaced with the backup wire. If the updated spectrum characteristics are different from the spectrum characteristics of the port interference waveform of the brake controller I / O before replacing the backup wire, and the brake controller is no longer disturbed, it is determined that the interference of the brake controller I / O port is removed.

[0029] In a third aspect, an embodiment of the present application further provides an electronic device, comprising: a processor, a storage medium and a bus, wherein the storage medium stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor communicates with the storage medium via the bus, and the processor executes the machine-readable instructions to execute the method for removing interference in the EMU braking system as described in the first aspect.

[0030] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the method for removing interference from the EMU braking system as described in the first aspect is executed.

[0031] The embodiments of the present application provide a method, device, electronic device and medium for removing interference from the braking system of an EMU. When the running speed of the EMU to be detected is increased to a target speed, the braking system is started for braking, and during the braking process, the port interference waveform of the brake controller I / O port and the spectrum characteristics of the port interference waveform are obtained; the standby line spectrum characteristics of the standby line interference waveform on the standby wire are obtained; wherein the power supply port connected to the standby wire is consistent with the power supply port connected to the I / O port of the brake controller; if there is a difference in waveform frequency and / or amplitude between the spectrum characteristics of the port interference waveform and the spectrum characteristics of the standby line, the wire of the I / O port of the brake controller is replaced with a standby wire; the updated spectrum characteristics after the I / O port of the brake controller is replaced with the standby wire are obtained, and if the updated spectrum characteristics are different from the spectrum characteristics of the port interference waveform of the brake controller I / O before the standby wire is replaced, and the brake controller is no longer disturbed, it is determined that the interference of the I / O port of the brake controller is removed. In this way, the spectral characteristics of the port interference waveform of the brake controller I / O port and the spare line spectral characteristics of the spare wires are obtained. If there is a difference between the spare line spectral characteristics and the port interference waveform spectral characteristics, the spare wires are replaced to the brake controller I / O port, and the wires in the brake controller I / O port that currently have interference are directly replaced by the spare wires to remove the interference. There is no need to spend time looking for the interference source, which helps to improve the efficiency of removing interference from the EMU's braking system.

[0032] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A flow chart of a method for removing interference from a brake system of an EMU provided in an embodiment of the present application;

[0035] Figure 2 A schematic diagram of the connection of an oscilloscope provided in an embodiment of the present application;

[0036] Figure 3 One of the structural schematic diagrams of a device for removing interference from a brake system of an EMU provided in an embodiment of the present application;

[0037] Figure 4 A second structural schematic diagram of a device for removing interference from a brake system of an EMU provided in an embodiment of the present application;

[0038] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, each other embodiment obtained by those skilled in the art without making creative work belongs to the scope of protection of the present application.

[0040] First, the application scenarios to which the present application is applicable are introduced. The present application can be applied in the field of electromagnetic interference detection technology.

[0041] High-speed EMUs use distributed power traction. The limited space makes the installation and wiring of on-board electronic and electrical equipment dense, and the electromagnetic interference transmission coupling is complex, resulting in electromagnetic interference failures, which poses a potential threat to the safety and reliability of EMU operation. Solving the interference problem often starts with the three elements of electromagnetic compatibility, among which identifying the interference source is the key element, and high-speed EMUs are no exception. However, it is precisely because of the complexity of the EMU electrical system, in which multiple devices on the EMU are electrically coupled to each other, and the interference source is difficult to determine. It is difficult and time-consuming to eliminate the interference source, resulting in low efficiency in removing interference from the EMU's braking system.

[0042] Based on this, an embodiment of the present application provides a method for removing interference from the braking system of an EMU, so as to improve the efficiency of removing interference from the braking system of the EMU.

[0043] See also Figure 1 , Figure 1 The flowchart of a method for removing interference of a train braking system provided in an embodiment of the present application is as follows. Figure 1 As shown in , the method for removing interference of the EMU braking system provided in the embodiment of the present application includes:

[0044] S101. When the running speed of the EMU to be tested is increased to a target speed, the braking system is started to brake, and during the braking process, a port interference waveform of an I / O port of a brake controller and a frequency spectrum feature of the port interference waveform are obtained.

[0045] S102, obtaining a backup line spectrum feature of a backup line interference waveform on a backup line; wherein a power supply port to which the backup line is connected is consistent with a power supply port to which the brake controller I / O port is connected.

[0046] S103: If there is a difference in waveform frequency and / or amplitude between the spectrum characteristics of the port interference waveform and the spectrum characteristics of the backup line, replace the wire of the I / O port of the brake controller with a backup wire.

[0047] S104, obtaining updated spectrum characteristics after the brake controller I / O port is replaced with the backup wire. If the updated spectrum characteristics are different from the spectrum characteristics of the port interference waveform of the brake controller I / O before replacing the backup wire, and the brake controller is no longer disturbed, it is determined that the interference of the brake controller I / O port is removed.

[0048] A method for removing interference from the braking system of an EMU provided in an embodiment of the present application obtains the spectral characteristics of the port interference waveform of the I / O port of the brake controller and the spare line spectral characteristics of the spare wires. If there is a difference between the spectral characteristics of the spare line and the spectral characteristics of the port interference waveform, the spare wires are replaced to the I / O port of the brake controller. The wires in the I / O port of the brake controller that currently has interference are directly replaced by the spare wires to remove the interference. There is no need to spend time looking for the interference source, which helps to improve the efficiency of removing interference from the braking system of the EMU.

[0049] The following is a description of the exemplary steps of the present application embodiment:

[0050] S101. When the running speed of the EMU to be tested is increased to a target speed, the braking system is started to brake, and during the braking process, a port interference waveform of an I / O port of a brake controller and a frequency spectrum feature of the port interference waveform are obtained.

[0051] In the embodiment of the present application, the high-speed EMU adopts distributed power traction. The limited space makes the installation and wiring of on-board electronic and electrical equipment dense, and the electromagnetic interference transmission coupling is complex, resulting in electromagnetic interference failures, which poses a potential threat to the safety and reliability of the EMU operation. To solve the interference problem, we often start with the three elements of electromagnetic compatibility, among which identifying the interference source is the key element, and high-speed EMUs are no exception. However, it is precisely because of the complexity of the EMU electrical system, in which multiple devices on the EMU are electrically coupled to each other, and the interference source is difficult to determine, which makes it impossible to solve the interference problem by reducing the emission of the interference source.

[0052] In a possible implementation, a field test method can be used to directly solve the electromagnetic interference problem of the EMU without determining the interference source. Specifically, for the braking system, during the operation of the EMU to be tested, the movement speed of the EMU to be tested can be increased to the target speed, and then the braking system can be started for braking, and during the braking process, the port interference waveform of the brake controller I / O port and the spectrum characteristics of the terminal interference waveform can be obtained.

[0053] Exemplarily, the target speed may be the normal operating speed of the train set to be tested, such as 250 km / h; and when the system is started for braking, secondary braking may also be used.

[0054] Among them, the brake controller I / O port of the brake system is a port where interference has occurred and needs to be removed.

[0055] In a possible implementation, when obtaining the port interference waveform of the brake controller I / O port, the interference waveform can be obtained through an oscilloscope. Specifically, the port interference waveform of the brake controller I / O port is obtained by triggering the oscilloscope; one end of the oscilloscope is connected to the brake controller I / O port; the other end of the oscilloscope is connected to the power supply port of the EMU to be tested; the trigger level of the oscilloscope is set to the first target trigger level.

[0056] For example, see Figure 2 , Figure 2 The oscilloscope connection diagram provided in the embodiment of the present application is as follows: Figure 2 As shown, one end of the oscilloscope 210 is connected to the I / O terminal to be detected of the brake controller 220, and the other end is connected to the DC power supply line of the EMU to be detected.

[0057] Among them, the first target trigger level of the oscilloscope can be set to 15V, and set to single trigger. When the EMU to be tested starts braking, the oscilloscope is triggered to obtain the port interference waveform of the brake controller I / O port.

[0058] In a possible implementation, the trigger level 15V of the oscilloscope can be set according to the model of the EMU to be tested, or the braking performance of the braking system. The models of different EMUs and / or the braking performance of the braking systems are different, and the trigger level setting of the oscilloscope may be different.

[0059] In a possible implementation, the oscilloscope is powered by a battery power module, which can prevent the common-mode interference generated by the EMU to be tested from affecting the test results through the power supply system, further improving the accuracy of interference testing and resolution.

[0060] In a possible implementation manner, the frequency spectrum characteristics of the port interference waveform are obtained by the following steps:

[0061] a1: performing fast Fourier transform analysis on the port interference waveform, using a rectangular window to obtain a first port spectrum feature of the port interference waveform, and using a flat-top window to obtain a second port spectrum feature of the port interference waveform.

[0062] In the embodiment of the present application, after the port interference waveform of the brake controller I / O port is obtained, a fast Fourier transform analysis can be performed on the port interference waveform to obtain the frequency spectrum characteristics of the port interference waveform.

[0063] Among them, fast Fourier transform (FFT) is one of the most basic methods in time domain-frequency domain transformation analysis; FFT algorithm can be divided into time extraction algorithm and frequency extraction algorithm.

[0064] In a possible implementation, when acquiring the port interference waveform, two spectrum characteristics of the port interference waveform may be acquired, namely, acquiring the first port spectrum characteristic of the port interference waveform through a rectangular window and acquiring the second port spectrum characteristic through a flat-top window.

[0065] Specifically, the rectangular window has the highest frequency recognition accuracy and the lowest amplitude recognition accuracy. It is suitable for transient or short pulse signals, equal-amplitude sine waves with very close frequencies, random noise, transient signals, pseudo-random signals, etc. The rectangular window has less spectrum leakage, but the main lobe is narrow and the side lobes are high in the frequency domain, which may cause errors in spectrum analysis; the spectrum characteristics of the flat-top window are characterized by a wide main lobe and low side lobes. It is suitable for occasions where the influence of side lobes needs to be reduced, such as transient or short pulse signals with a large difference in signal level before and after measurement. The spectrum characteristics of the flat-top window enable it to provide better signal-to-noise ratio and lower sidelobe interference when processing such signals.

[0066] In the embodiment of the present application, the spectral characteristics of the port interference waveform are obtained by using a rectangular window and a flat-top window at the same time, which can make up for the disadvantages of using a rectangular window or a flat-top window alone to a certain extent, making the obtained spectral characteristics more comprehensive and accurate.

[0067] Furthermore, after obtaining the port interference waveform and spectral characteristics of the brake controller I / O port, the port interference waveform and spectral characteristics of the brake controller I / O port are stored for subsequent comparison with the backup line interference waveform and backup line spectral characteristics of the used electrical wires.

[0068] S102, obtaining a backup line spectrum feature of a backup line interference waveform on a backup line; wherein a power supply port to which the backup line is connected is consistent with a power supply port to which the brake controller I / O port is connected.

[0069] In an embodiment of the present application, when obtaining the backup line interference waveform of the backup power line, it is also obtained through an oscilloscope. Specifically, one end of the oscilloscope connected to the I / O port of the brake controller is removed, and the end of the oscilloscope is connected to the backup power line, that is, the power supply port to which the backup power line is connected through the oscilloscope is consistent with the power supply port to which the I / O port of the brake controller is connected through the oscilloscope.

[0070] Furthermore, after determining that the spare wire is connected to the oscilloscope, the EMU to be tested continues to speed up, and after the EMU to be tested speeds up to the target speed, the braking system is started, and during the braking process of the braking system, the spare line frequency spectrum characteristics of the spare wire are obtained.

[0071] Specifically, the standby line frequency spectrum characteristics of the standby power line are obtained by the following steps:

[0072] b1: When the running speed of the EMU to be tested is increased to the target speed, the braking system is started to brake, and during the braking process, the wire waveform of the spare wire is measured by the oscilloscope connected to the spare wire.

[0073] b2: performing fast Fourier transform analysis on the standby line interference waveform, using a rectangular window to obtain a first standby line frequency spectrum feature of the standby line interference waveform, and using a flat-top window to obtain a second standby line frequency spectrum feature of the standby line interference waveform.

[0074] In the embodiment of the present application, in order to ensure the accuracy of the test of the spare wires and the I / O port of the brake controller, it is necessary to keep the test environment consistent. Therefore, after the oscilloscope is connected to the spare wires, the speed of the EMU to be tested is also required to be increased to the target speed (exemplarily, 250km / h). At the same time, the oscilloscope maintains a trigger level of 15V and triggers it once.

[0075] Similarly, when obtaining the standby line spectrum characteristics of the standby wire, the first standby line spectrum characteristics of the standby wire are also obtained through the rectangular window, and the second standby line spectrum characteristics of the standby wire are obtained through the flat top window. The specific acquisition method is consistent with the acquisition method of the first port standby line spectrum characteristics and the second port standby line spectrum characteristics of the brake controller I / O port, and will not be repeated here.

[0076] Furthermore, after obtaining the backup line spectrum characteristics of the backup power line, it is necessary to compare them with the spectrum characteristics of the port interference waveform of the brake controller I / O port that has been previously obtained and stored to determine the interference situation of the current brake controller I / O port.

[0077] S103: If there is a difference in waveform frequency and / or amplitude between the spectrum characteristics of the port interference waveform and the spectrum characteristics of the backup line, replace the wire of the I / O port of the brake controller with a backup wire.

[0078] In the embodiment of the present application, since the obtained spectral characteristics of the port interference waveform and the spectral characteristics of the backup line are different spectral characteristics, when comparing the spectral characteristics of the port interference waveform and the spectral characteristics of the backup line, they also need to be compared separately.

[0079] Specifically, the following steps are used to determine whether there is a difference in waveform frequency and / or amplitude between the spectrum characteristics of the port interference waveform and the spectrum characteristics of the standby line:

[0080] c1: if the waveform frequency and / or amplitude of the first port spectrum feature of the spectrum feature is different from the waveform frequency and / or amplitude of the first standby line spectrum feature of the standby line spectrum feature, determine that the waveform frequency and / or amplitude of the spectrum feature of the port interference waveform is different from that of the standby line spectrum feature; and / or,

[0081] c2: If there is a difference in waveform frequency and / or amplitude between the second port spectrum characteristic of the spectrum characteristic and the second backup line spectrum characteristic of the backup line spectrum characteristic, it is determined that there is a difference in waveform frequency and / or amplitude between the spectrum characteristic of the port interference waveform and the backup line spectrum characteristic.

[0082] In an embodiment of the present application, when comparing the spectral characteristics of a port interference waveform and the spectral characteristics of a backup line, it is necessary to obtain the first port spectral characteristics of the spectral characteristics of the port interference waveform through a rectangular window and compare them with the first backup line spectral characteristics obtained by the backup line spectral characteristics through the rectangular window, and obtain the second port spectral characteristics of the spectral characteristics of the port interference waveform through a flat-top window and compare them with the second backup line spectral characteristics obtained by the backup line spectral characteristics through the flat-top window.

[0083] In a possible implementation, when comparing the first port spectrum feature with the first backup line spectrum feature, the waveform frequency and amplitude of the first port spectrum feature and the first backup line spectrum feature are compared. If the first port spectrum feature and the first backup line spectrum feature are different in at least one dimension of the waveform frequency and amplitude, it is considered that there is a difference between the first port spectrum feature and the first backup line spectrum feature; similarly, when comparing the second port spectrum feature and the second backup line spectrum feature, the waveform frequency and amplitude of the second port spectrum feature and the second backup line spectrum feature are compared. If the second port spectrum feature and the second backup line spectrum feature are different in at least one dimension of the waveform frequency and amplitude, it is considered that there is a difference between the second port spectrum feature and the second backup line spectrum feature.

[0084] For example, when comparing the first port spectrum characteristics with the first backup line spectrum characteristics and the second port spectrum characteristics with the second backup line spectrum characteristics, only the amplitudes between different spectrum characteristics can be compared, that is, the difference in general spectrum characteristics is reflected in the amplitude. If the amplitudes are different, it is considered that the spectrum characteristics of the port interference waveform are different from the backup line spectrum characteristics.

[0085] In a possible implementation, after respectively comparing the first port spectrum characteristics with the first backup line spectrum characteristics, and the second port characteristics with the second backup line spectrum characteristics, if there is a difference between the first port spectrum characteristics and the first backup line spectrum characteristics, or there is a difference between the second port spectrum characteristics and the second backup line spectrum characteristics, or there are differences between the first port spectrum characteristics and the first backup line spectrum characteristics, and there are differences between the second port spectrum characteristics and the second backup line spectrum characteristics, then it is determined that the waveform frequency and / or amplitude of the spectrum characteristics of the port interference waveform and the spectrum characteristics of the backup line are different. At this time, the brake controller I / O port needs to replace the wires, then the backup wires are replaced to the brake controller I / O port, and after the replacement, the spectrum characteristics of the brake controller I / O port are obtained again for comparison to detect whether the interference of the current brake controller I / O port has been removed.

[0086] S104, obtaining updated spectrum characteristics after the brake controller I / O port is replaced with the backup wire. If the updated spectrum characteristics are different from the spectrum characteristics of the port interference waveform of the brake controller I / O before replacing the backup wire, and the brake controller is no longer disturbed, it is determined that the interference of the brake controller I / O port is removed.

[0087] In one possible implementation, after the wires of the brake controller I / O port are updated to spare wires, the oscilloscope is connected to the brake controller I / O port again, the EMU to be tested continues to speed up, and after the EMU to be tested speeds up to the target speed, the braking system is started, and during the braking process of the brake system, the updated spectrum characteristics of the brake controller I / O port after the wires are replaced are obtained.

[0088] In an embodiment of the present application, in order to ensure the accuracy of the test of the brake controller I / O port, it is necessary to keep the test environment consistent. Therefore, after the oscilloscope is connected to the updated brake controller I / O port, the speed of the EMU to be tested is also required to be increased to the target speed (exemplarily, 250km / h). At the same time, the oscilloscope maintains a trigger level of 15V and triggers it once.

[0089] Similarly, when obtaining the updated spectrum characteristics of the updated brake controller I / O port, the first updated spectrum characteristics of the updated brake controller I / O port are also obtained through a rectangular window, and the second updated spectrum characteristics of the updated brake controller I / O port are obtained through a flat-top window.

[0090] Furthermore, when the brake controller is no longer disturbed and the spectrum characteristics are updated for comparison, it is necessary to obtain the first port spectrum characteristics of the port interference waveform through a rectangular window and compare them with the first updated spectrum characteristics obtained by the updated spectrum characteristics through the rectangular window, and to obtain the second port spectrum characteristics of the port interference waveform through a flat-top window and compare them with the second updated spectrum characteristics obtained by the updated spectrum characteristics through the flat-top window.

[0091] In one possible implementation, when comparing the updated spectrum characteristics with the spectrum characteristics of the port interference waveform, the waveform frequency and amplitude of the updated spectrum characteristics and the spectrum characteristics of the port interference waveform may be compared, or only the amplitude of the spectrum characteristics of the updated spectrum characteristics and the spectrum characteristics of the port interference waveform may be compared. The specific comparison method is consistent with the comparison method of the spectrum characteristics of the port interference waveform and the spectrum characteristics of the standby line, and will not be repeated here.

[0092] In one possible implementation, the difference between the updated spectrum characteristics and the spectrum characteristics of the interference waveform means that the waveform frequency and / or amplitude of the updated spectrum characteristics are inconsistent with the waveform frequency and / or amplitude of the spectrum characteristics of the port interference waveform. If it is determined that the current updated spectrum characteristics are different from the spectrum characteristics of the port interference waveform, and if the brake controller no longer interferes at this time, it is determined that the current interference has been resolved, and a spare wire can be used at the brake controller I / O port without causing interference.

[0093] In another possible implementation, if the updated spectrum characteristics of the brake controller I / O port after replacing the spare wire are consistent with the spectrum characteristics of the port interference waveform before replacement, at this time, the interference is not eliminated and the spare wire needs to be replaced again for processing.

[0094] Specifically, after the step of "obtaining updated spectrum characteristics after the brake controller I / O port is replaced with the backup wire", the removal method further includes:

[0095] d1: The difference in waveform frequency and / or amplitude between the updated spectrum characteristics and the port interference waveform of the brake controller I / O is less than a preset difference threshold, replace the spare wire, and obtain the spare line spectrum characteristics of the spare line interference waveform of the replaced spare wire again, and compare them with the spectrum characteristics of the port interference waveform of the brake controller I / O port, until the updated spectrum characteristics of the brake controller I / O port after replacing the spare wire are different from the spectrum characteristics of the port interference waveform of the brake controller I / O before replacing the wire, and the brake controller is no longer disturbed, stop replacing the spare wire, and determine that the interference of the brake controller I / O port has been removed.

[0096] In a possible implementation, the updated spectrum characteristics are consistent with the spectrum characteristics of the port interference waveform, or the difference is small, and the difference in waveform frequency and / or amplitude between the updated spectrum characteristics and the spectrum characteristics of the port interference waveform may be less than a preset difference threshold, and it is determined that after the current replacement of the spare wire, there is still interference at the brake controller I / O port. At this time, it is necessary to replace the spare wire again, and obtain the spare line spectrum characteristics of the replaced spare wire again, determine the spare wire that is inconsistent with the spectrum characteristics of the port interference waveform of the brake controller I / O port, and replace it to the brake controller I / O port again to detect the port update spectrum characteristics. Here, the acquisition and comparison detection of the spare line spectrum characteristics of the spare wire and the acquisition and comparison of the updated spectrum characteristics after replacing the spare wire are consistent with the above process, which will not be repeated here.

[0097] In an embodiment of the present application, after repeatedly replacing the backup wires, if it is determined that there is a backup wire whose updated spectrum characteristics of the brake controller I / O port after replacing the backup wire are different from the spectrum characteristics of the port interference waveform, replacement of the backup wire is stopped. If the current brake controller no longer has interference, it is determined that the interference of the brake controller I / O port has been removed.

[0098] Exemplarily, after determining that there is interference at the I / O port of the brake controller, the spectrum characteristics of the port interference waveform of the I / O port of the brake controller are obtained, and at the same time, the spectrum characteristics of the A standby line of the standby wire A are obtained. If there is a difference between the spectrum characteristics of the A standby line and the spectrum characteristics of the port interference waveform, the standby wire A is replaced to the I / O port of the brake controller. If the updated spectrum characteristics after the standby wire A is replaced to the I / O port of the brake controller are consistent with the spectrum characteristics of the port interference waveform, it is determined that there is still interference, and the standby wire needs to be replaced again, and the spectrum characteristics of the B standby line of the standby wire B are obtained. If there is no difference between the spectrum characteristics of the B standby line and the spectrum characteristics of the port interference waveform, the standby wire C is continued to be obtained, and the spectrum characteristics of the C standby line of the standby wire C are obtained. If there is a difference between the spectrum characteristics of the C standby line and the spectrum characteristics of the port interference waveform, the standby wire C is replaced to the I / O port of the brake controller. If there is a difference between the updated spectrum characteristics after the standby wire C is replaced to the I / O port of the brake controller and the spectrum characteristics of the port interference waveform are different, and no interference occurs in the brake controller, the replacement of the standby wire is stopped, and the interference at the I / O port of the brake controller is removed.

[0099] In a possible implementation, if when the oscilloscope obtains the backup line frequency spectrum characteristics of the backup power line, if it is found that the amplitude of the backup line frequency spectrum characteristics of the backup line interference waveform is low when determining the backup line frequency spectrum characteristics, it is necessary to adjust the trigger level of the oscilloscope to ensure that the backup line frequency spectrum characteristics of the backup power line are accurately obtained.

[0100] Specifically, the removal method further comprises:

[0101] e1: obtaining the standby line interference signal amplitude in the standby line frequency spectrum feature of the standby line interference waveform.

[0102] e2: If the amplitude of the standby line interference signal is less than the preset interference signal amplitude, adjust the trigger level of the oscilloscope and set the trigger level of the oscilloscope to a second target trigger level.

[0103] In an embodiment of the present application, if it is determined that the standby line interference signal amplitude of the standby line interference waveform is smaller than the preset interference signal amplitude, it is determined that the trigger level of the oscilloscope needs to be adjusted. At this time, the trigger level of the oscilloscope can be adjusted to the second target trigger level, and because the standby line interference signal amplitude is smaller than the preset interference signal amplitude, the trigger level of the oscilloscope needs to be lowered. Therefore, the second target trigger level is smaller than the first target trigger level.

[0104] For example, if the first target trigger level in the above example is 15V, then the second target trigger level can be adjusted to 5V or other values. The specific target of the adjustment may be related to the model of the vehicle group to be tested or the performance of the braking system.

[0105] In one possible implementation, in order to ensure the consistency of the test environment and the accuracy of the test results, after determining to adjust the trigger level of the oscilloscope, it is also necessary to re-acquire the spectral characteristics of the port interference waveform of the brake controller I / O port at the second target trigger level and perform subsequent comparisons.

[0106] The method for removing interference from the braking system of an EMU provided in an embodiment of the present application comprises the following steps: when the running speed of the EMU to be detected is increased to a target speed, the braking system is started for braking, and during the braking process, the port interference waveform of the brake controller I / O port and the spectrum characteristics of the port interference waveform are obtained; the standby line spectrum characteristics of the standby line interference waveform on the standby wire are obtained; wherein, the power supply port connected to the standby wire is consistent with the power supply port connected to the I / O port of the brake controller; if there is a difference in waveform frequency and / or amplitude between the spectrum characteristics of the port interference waveform and the spectrum characteristics of the standby line, the wire of the I / O port of the brake controller is replaced with a standby wire; the updated spectrum characteristics after the I / O port of the brake controller is replaced with the standby wire are obtained, and if the updated spectrum characteristics are different from the spectrum characteristics of the port interference waveform of the brake controller I / O before the standby wire is replaced, and the brake controller is no longer disturbed, it is determined that the interference of the I / O port of the brake controller is removed. In this way, the spectral characteristics of the port interference waveform of the brake controller I / O port and the spare line spectral characteristics of the spare wires are obtained. If there is a difference between the spare line spectral characteristics and the port interference waveform spectral characteristics, the spare wires are replaced to the brake controller I / O port, and the wires in the brake controller I / O port that currently have interference are directly replaced by the spare wires to remove the interference. There is no need to spend time looking for the interference source, which helps to improve the efficiency of removing interference from the EMU's braking system.

[0107] Based on the same inventive concept, an embodiment of the present application also provides a device for removing interference from the EMU braking system corresponding to the method for removing interference from the EMU braking system. Since the principle of solving the problem by the device in the embodiment of the present application is similar to the method for removing interference from the EMU braking system in the embodiment of the present application, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0108] See also Figure 3 , Figure 4 , Figure 3 This is one of the structural schematic diagrams of a device for removing interference from a brake system of an EMU provided in an embodiment of the present application. Figure 4 This is a second structural diagram of a device for removing interference from a train braking system provided in an embodiment of the present application. Figure 3 As shown in , the removal device 300 comprises:

[0109] The port spectrum feature acquisition module 310 is used to start the braking system for braking when the running speed of the EMU to be detected is increased to the target speed, and to obtain the port interference waveform of the I / O port of the brake controller and the spectrum feature of the port interference waveform during the braking process;

[0110] A standby line spectrum feature acquisition module 320 is used to acquire the standby line spectrum feature of the standby line interference waveform on the standby electric line; wherein the power supply port connected to the standby electric line is consistent with the power supply port connected to the brake controller I / O port;

[0111] A wire replacement module 330, for replacing the wire of the brake controller I / O port with a spare wire if there is a difference in waveform frequency and / or amplitude between the spectrum characteristics of the port interference waveform and the spectrum characteristics of the spare wire;

[0112] The interference removal module 340 is used to obtain the updated spectrum characteristics after the brake controller I / O port is replaced with the backup wire. If the updated spectrum characteristics are different from the spectrum characteristics of the port interference waveform of the brake controller I / O before replacing the backup wire, and the brake controller is no longer disturbed, it is determined that the interference of the brake controller I / O port is removed.

[0113] In a possible implementation manner, the port spectrum feature acquisition module 310 is used to acquire the spectrum feature of the port interference waveform through the following steps:

[0114] A fast Fourier transform analysis is performed on the port interference waveform, a rectangular window is used to obtain a first port spectrum feature of the port interference waveform, and a flat-top window is used to obtain a second port spectrum feature of the port interference waveform.

[0115] In a possible implementation, the port interference waveform of the brake controller I / O port is obtained by triggering an oscilloscope; one end of the oscilloscope is connected to the brake controller I / O port; the other end of the oscilloscope is connected to the power supply port of the EMU to be tested; and the trigger level of the oscilloscope is set to a first target trigger level.

[0116] In a possible implementation manner, the standby line frequency spectrum feature acquisition module 320 is used to acquire the standby line frequency spectrum feature of the standby power line through the following steps:

[0117] When the running speed of the EMU to be tested is increased to the target speed, the braking system is started to brake, and during the braking process, the wire waveform of the spare wire is obtained through the oscilloscope connected to the spare wire;

[0118] A fast Fourier transform analysis is performed on the standby line interference waveform, a rectangular window is used to obtain a first standby line frequency spectrum feature of the standby line interference waveform, and a flat-top window is used to obtain a second standby line frequency spectrum feature of the standby line interference waveform.

[0119] In a possible implementation manner, the wire replacement module 330 is used to determine whether there is a difference in waveform frequency and / or amplitude between the spectrum characteristics of the port interference waveform and the spectrum characteristics of the backup line through the following steps:

[0120] If the waveform frequency and / or amplitude of the first port spectrum feature of the spectrum feature is different from the waveform frequency and / or amplitude of the first backup line spectrum feature of the backup line spectrum feature, it is determined that the waveform frequency and / or amplitude of the spectrum feature of the port interference waveform is different from the waveform frequency and / or amplitude of the backup line spectrum feature; and / or,

[0121] If the waveform frequency and / or amplitude of the second port spectrum characteristic of the port spectrum characteristic is different from the waveform frequency and / or amplitude of the second backup line spectrum characteristic of the backup line spectrum characteristic, it is determined that the waveform frequency and / or amplitude of the spectrum characteristic of the port interference waveform is different from that of the backup line spectrum characteristic.

[0122] In a possible implementation, Figure 4 As shown, the removal device 300 further includes a wire adjustment module 350, and the wire adjustment module 350 is used to:

[0123] If the difference in waveform frequency and / or amplitude between the updated spectrum characteristics and the spectrum characteristics of the port interference waveform of the brake controller I / O is less than a preset difference threshold, replace the spare wire, and obtain the spare line spectrum characteristics of the spare line interference waveform of the replaced spare wire again, and compare them with the spectrum characteristics of the port interference waveform of the brake controller I / O port, until the updated spectrum characteristics of the brake controller I / O port after replacing the spare wire are different from the spectrum characteristics of the port interference waveform of the brake controller I / O before replacing the wire, and the brake controller is no longer disturbed, stop replacing the spare wire, and determine that the interference of the brake controller I / O port has been removed.

[0124] In a possible implementation, Figure 4 As shown, the removal device 300 further includes a trigger level adjustment module 360, and the trigger level adjustment module 360 ​​is used to:

[0125] Acquire the standby line interference signal amplitude in the standby line frequency spectrum feature of the standby line interference waveform;

[0126] If the amplitude of the standby line interference signal is less than the preset interference signal amplitude, adjusting the trigger level of the oscilloscope to set the trigger level of the oscilloscope to a second target trigger level;

[0127] The second target trigger level is lower than the first target trigger level.

[0128] The device for removing interference from the braking system of an EMU provided in an embodiment of the present application starts the braking system for braking when the running speed of the EMU to be detected is increased to a target speed, and obtains the port interference waveform of the I / O port of the brake controller and the spectrum characteristics of the port interference waveform during the braking process; obtains the standby line spectrum characteristics of the standby line interference waveform on the standby wire; wherein the power supply port connected to the standby wire is consistent with the power supply port connected to the I / O port of the brake controller; if there is a difference in waveform frequency and / or amplitude between the spectrum characteristics of the port interference waveform and the spectrum characteristics of the standby line, replace the wire of the I / O port of the brake controller with a standby wire; obtains the updated spectrum characteristics after the I / O port of the brake controller is replaced with the standby wire, if the updated spectrum characteristics are different from the spectrum characteristics of the port interference waveform of the brake controller I / O before replacing the standby wire, and the brake controller is no longer disturbed, it is determined that the interference of the I / O port of the brake controller is removed. In this way, the spectral characteristics of the port interference waveform of the brake controller I / O port and the spare line spectral characteristics of the spare wires are obtained. If there is a difference between the spare line spectral characteristics and the port interference waveform spectral characteristics, the spare wires are replaced to the brake controller I / O port, and the wires in the brake controller I / O port that currently have interference are directly replaced by the spare wires to remove the interference. There is no need to spend time looking for the interference source, which helps to improve the efficiency of removing interference from the EMU's braking system.

[0129] See also Figure 5 , Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 5 As shown in , the electronic device 500 includes a processor 510 , a memory 520 and a bus 530 .

[0130] The memory 520 stores machine-readable instructions executable by the processor 510. When the electronic device 500 is running, the processor 510 communicates with the memory 520 via the bus 530. When the machine-readable instructions are executed by the processor 510, the above-mentioned Figure 1 The steps of the method for removing interference from the EMU braking system in the method embodiment shown in the embodiment and the specific implementation method thereof can be referred to the method embodiment, which will not be described in detail here.

[0131] The present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the computer program can execute the above-mentioned Figure 1 The steps of the method for removing interference from the EMU braking system in the method embodiment shown in the embodiment and the specific implementation method thereof can be referred to the method embodiment, which will not be described in detail here.

[0132] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0133] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0134] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0135] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0136] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present application can essentially or in other words, 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, which is stored in a storage medium and includes several 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 application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0137] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-mentioned embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A method for removing interference from a brake system of an EMU, characterized in that: The removal method comprises: When the running speed of the EMU to be tested is increased to the target speed, the braking system is started to brake, and during the braking process, the port interference waveform of the I / O port of the brake controller and the frequency spectrum characteristics of the port interference waveform are obtained; Acquire a standby line spectrum feature of a standby line interference waveform on a standby line; wherein the power supply port to which the standby line is connected is consistent with the power supply port to which the brake controller I / O port is connected; If there is a difference in waveform frequency and / or amplitude between the spectrum characteristics of the port interference waveform and the spectrum characteristics of the standby line, replacing the wire of the brake controller I / O port with a standby wire; Obtain the updated spectrum characteristics after the brake controller I / O port is replaced with the backup wire. If the updated spectrum characteristics are different from the spectrum characteristics of the port interference waveform of the brake controller I / O before replacing the backup wire, and the brake controller is no longer disturbed, determine that the interference of the brake controller I / O port is removed.

2. The removal method according to claim 1, characterized in that: The frequency spectrum characteristics of the port interference waveform are obtained by the following steps: A fast Fourier transform analysis is performed on the port interference waveform, a rectangular window is used to obtain a first port spectrum feature of the port interference waveform, and a flat-top window is used to obtain a second port spectrum feature of the port interference waveform.

3. The removal method according to claim 2, characterized in that: The port interference waveform of the brake controller I / O port is obtained by triggering the oscilloscope; one end of the oscilloscope is connected to the brake controller I / O port; the other end of the oscilloscope is connected to the power supply port of the EMU to be tested; the trigger level of the oscilloscope is set to the first target trigger level.

4. The removal method according to claim 3, characterized in that: The standby line frequency spectrum characteristics of the standby power line are obtained by the following steps: When the running speed of the EMU to be tested is increased to the target speed, the braking system is started to brake, and during the braking process, the standby line interference waveform of the standby line is obtained through the oscilloscope connected to the standby line; A fast Fourier transform analysis is performed on the standby line interference waveform, a rectangular window is used to obtain a first standby line frequency spectrum feature of the standby line interference waveform, and a flat-top window is used to obtain a second standby line frequency spectrum feature of the standby line interference waveform.

5. The removal method according to claim 4, characterized in that: Determine whether there is a difference in waveform frequency and / or amplitude between the spectrum characteristics of the port interference waveform and the spectrum characteristics of the standby line by the following steps: If the waveform frequency and / or amplitude of the first port spectrum feature of the spectrum feature is different from the waveform frequency and / or amplitude of the first backup line spectrum feature of the backup line spectrum feature, it is determined that the waveform frequency and / or amplitude of the spectrum feature of the port interference waveform is different from the waveform frequency and / or amplitude of the backup line spectrum feature; and / or, If there is a difference in waveform frequency and / or amplitude between the second port spectrum characteristic of the spectrum characteristic and the second backup line spectrum characteristic of the backup line spectrum characteristic, it is determined that there is a difference in waveform frequency and / or amplitude between the spectrum characteristic of the port interference waveform and the backup line spectrum characteristic.

6. The removal method according to claim 1, characterized in that: After obtaining the updated spectrum characteristics after the brake controller I / O port is replaced with the spare wire, the removal method further includes: If the difference in waveform frequency and / or amplitude between the updated spectrum characteristics and the spectrum characteristics of the port interference waveform of the brake controller I / O is less than a preset difference threshold, replace the spare wire, and obtain the spare line spectrum characteristics of the spare line interference waveform of the replaced spare wire again, and compare them with the spectrum characteristics of the port interference waveform of the brake controller I / O port, until the updated spectrum characteristics of the brake controller I / O port after replacing the spare wire are different from the spectrum characteristics of the port interference waveform of the brake controller I / O before replacing the wire, and the brake controller is no longer disturbed, stop replacing the spare wire, and determine that the interference of the brake controller I / O port has been removed.

7. The removal method according to claim 3, characterized in that: The removal method further comprises: Acquire the standby line interference signal amplitude in the standby line frequency spectrum feature of the standby line interference waveform; If the amplitude of the standby line interference signal is less than the preset interference signal amplitude, adjusting the trigger level of the oscilloscope to set the trigger level of the oscilloscope to a second target trigger level; The second target trigger level is lower than the first target trigger level.

8. A device for removing interference from a brake system of a train set, characterized in that: The removal device comprises: The port spectrum feature acquisition module is used to start the braking system for braking when the running speed of the EMU to be detected is increased to the target speed, and to obtain the port interference waveform of the I / O port of the brake controller and the spectrum feature of the port interference waveform during the braking process; A standby line spectrum feature acquisition module, used to acquire the standby line spectrum feature of the standby line interference waveform on the standby electric line; wherein the power supply port connected to the standby electric line is consistent with the power supply port connected to the brake controller I / O port; A wire replacement module, used to replace the wire of the I / O port of the brake controller with a spare wire if there is a difference in waveform frequency and / or amplitude between the spectrum characteristics of the port interference waveform and the spectrum characteristics of the spare line; An interference removal module is used to obtain the updated spectrum characteristics after the brake controller I / O port is replaced with the backup wire. If the updated spectrum characteristics are different from the spectrum characteristics of the port interference waveform of the brake controller I / O before replacing the backup wire, and the brake controller is no longer disturbed, it is determined that the interference of the brake controller I / O port is removed.

9. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor communicates with the memory via the bus, and the processor executes the machine-readable instructions to perform the steps of the method for removing interference from the EMU braking system as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, which, when executed by a processor, executes the steps of the method for removing interference in the braking system of an EMU as claimed in any one of claims 1 to 7.

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