Method, apparatus, storage medium and electronic device for testing electromagnetic interference of track signals

Abstract

The present disclosure relates to the technical field of rail locomotives, and particularly relates to a method, device, storage medium and electronic device for testing electromagnetic interference of track signals. The method for testing electromagnetic interference of track signals includes: when the locomotive with power off is located in the target section, adjusting the input voltage of the track circuit until it is determined that the preset test conditions are met; when the preset test conditions are met, measuring the first track signal output by the choke transformer in the track circuit and / or the second track signal output by the protection device in the track circuit; performing Fourier transform on the first track signal and / or the second track signal to obtain a first transform result and / or a second transform result respectively; determining the test result of electromagnetic interference of track signals according to the first transform result and / or the second transform result. The present disclosure can improve the accuracy of the test result of electromagnetic interference of track signals.

Description

Technical Field

[0001] The present disclosure relates to the technical field of rail locomotives, and particularly to a method, device, storage medium and electronic device for testing electromagnetic interference of track signals. Background Art

[0002] At present, the first domestic 7200W high-power permanent magnet direct drive electric locomotive has been successfully developed. Since it is also the first application in the world, although the locomotive currently meets the requirements of relevant standards such as TB / T 3487-2017 "AC Drive Electric Locomotive" and GB / T 3318-2006 "Test Methods for Electric Locomotives before Put into Use", compared with the asynchronous traction motor, the traction motor of the high-power permanent magnet direct drive passenger electric locomotive cancels the gearbox, and the traction motor far exceeds the asynchronous traction motor of the same power in terms of both volume and weight. Moreover, its distance from the rail and the roadbed is small, which may cause electromagnetic interference to trackside track signal equipment, etc. Therefore, it is necessary to ensure that it has no impact on the track circuit track signal before the locomotive enters the main line.

[0003] In the past, for the method of testing electromagnetic interference of track signals, only the content of the harmonic of the primary current of the locomotive was measured according to GB / T 28807.2 "Compatibility Standard for Rolling Stock and Detection Systems with Track Circuits" to separately evaluate whether the locomotive generates electromagnetic interference to the track signal. This method belongs to an indirect method, and if the locomotive is composed of double-section or multi-section coupled locomotives, it also brings inconvenience in measuring point layout, resulting in inaccurate test results of track signal electromagnetic interference.

[0004] It should be noted that the information disclosed in the above background art is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0005] The purpose of the present disclosure is to provide a method, device, storage medium and electronic device for testing electromagnetic interference of track signals, so as to at least overcome to a certain extent the problem of inaccurate measurement results caused by the limitations and defects of related technologies.

[0006] Other features and advantages of the present disclosure will become apparent through the following detailed description, or be learned in part through the practice of the present disclosure.

[0007] According to a first aspect of the present disclosure, there is provided a method for testing electromagnetic interference of track signals, including:

[0008] When the locomotive powered off is located in the target section, adjust the input voltage of the track circuit until it is determined that the preset test conditions are met;

[0009] When the preset test conditions are satisfied, measure the first track signal output by the choke transformer in the track circuit and / or the second track signal output by the protection device in the track circuit;

[0010] Perform Fourier transform on the first track signal and / or the second track signal to obtain a first transform result and / or a second transform result respectively;

[0011] Determine the track signal electromagnetic interference test result according to the first transform result and / or the second transform result.

[0012] In an exemplary embodiment of the present disclosure, when the target section is an adjacent section of the track circuit and the track circuit is a ZWP track circuit, the determination of satisfying the preset test conditions includes:

[0013] When the voltage amplitude of the second track signal is greater than or equal to a first preset voltage threshold, it is determined that the preset test conditions are satisfied.

[0014] In an exemplary embodiment of the present disclosure, when the target section is the section corresponding to the track circuit and the track circuit is the ZWP track circuit, the determination of satisfying the preset test conditions includes:

[0015] When the voltage amplitude of the second track signal is less than or equal to a second preset voltage threshold, it is determined that the preset test conditions are satisfied, and the second preset voltage threshold is less than the first preset voltage threshold.

[0016] In an exemplary embodiment of the present disclosure, when the target section is an adjacent section of the track circuit and the track circuit is a phase-sensitive track circuit, the determination of satisfying the preset test conditions includes:

[0017] When the voltage amplitude of the second track signal is greater than or equal to a third preset voltage threshold, it is determined that the preset test conditions are satisfied, and the third preset voltage threshold is greater than the first preset voltage threshold.

[0018] In an exemplary embodiment of the present disclosure, when the target section is the section corresponding to the track circuit and the track circuit is the phase-sensitive track circuit, the determination of satisfying the preset test conditions includes:

[0019] When the voltage amplitude of the second track signal is less than or equal to a fourth preset voltage threshold, it is determined that the preset test conditions are satisfied, and the fourth preset voltage threshold is greater than the first preset voltage threshold and less than the third preset voltage threshold.

[0020] In an exemplary embodiment of the present disclosure, determining the track signal electromagnetic interference test result based on the first transformation result and / or the second transformation result includes:

[0021] Obtaining the first current amplitude of the first harmonic signal and / or the second current amplitude of the second harmonic signal from the first transformation result and / or the second transformation result, where the first harmonic signal is the largest harmonic signal in the first track signal, and the second harmonic signal is the largest harmonic signal in the second track signal;

[0022] If the first current amplitude and / or the second current amplitude is less than or equal to a preset interference current threshold, it is determined that the track signal electromagnetic interference test passes.

[0023] In an exemplary embodiment of the present disclosure, the method further includes:

[0024] Obtaining the difference between the second current amplitude and the first current amplitude;

[0025] If the difference is greater than a preset threshold, it is determined that there is a conducted interference in the track circuit.

[0026] According to a second aspect of the present disclosure, there is provided a track signal electromagnetic interference test device, including:

[0027] An input voltage adjustment module, configured to adjust the input voltage of the track circuit until it is determined that preset test conditions are met when the powered-off locomotive is located in the target section;

[0028] A track signal measurement module, configured to measure the first track signal output by the choke transformer in the track circuit and / or the second track signal output by the protection device in the track circuit when the preset test conditions are met;

[0029] A track signal transformation module, configured to perform Fourier transformation on the first track signal and / or the second track signal to obtain a first transformation result and / or a second transformation result respectively;

[0030] A test result determination module, configured to determine the track signal electromagnetic interference test result based on the first transformation result and / or the second transformation result.

[0031] According to a third aspect of the present disclosure, there is provided a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps of the method according to any one of the first aspects are implemented.

[0032] According to a fourth aspect of the present disclosure, there is provided an electronic device, including:

[0033] A processor; and

[0034] A memory for storing executable instructions of the processor;

[0035] Wherein, the processor is configured to execute the steps of the method according to any one of the first aspects by executing the executable instructions.

[0036] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

[0037] In summary, for the method provided by the present disclosure, when the powered-off locomotive is located in the target section, the input voltage of the track circuit is adjusted until it is determined that the preset test conditions are met; when the preset test conditions are met, the first track signal output by the choke transformer in the track circuit and the second track signal output by the protection device in the track circuit are measured; the Fourier transform is performed on the first track signal and / or the second track signal to obtain the first transformation result and / or the second transformation result respectively; the track signal electromagnetic interference test result is determined according to the first transformation result and / or the second transformation result. It is possible to directly measure the first track signal and / or the second track signal at the output of the choke transformer in the track circuit and / or at the output of the protection device in the track circuit, and then determine the track signal electromagnetic interference test result according to the directly measured first track signal and / or second track signal, improving the accuracy of the track signal electromagnetic interference test result.

[0038] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present disclosure and used together with the specification to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0040] Figure 1 Schematically shows a flowchart of a method for testing electromagnetic interference of track signals in an exemplary embodiment of the present disclosure;

[0041] Figure 2 Schematically shows a schematic diagram of a track circuit in an exemplary embodiment of the present disclosure;

[0042] Figure 3 Schematically shows a schematic diagram of a track signal test circuit in an exemplary embodiment of the present disclosure Figure 1 ;

[0043] Figure 4Schematically shows a schematic diagram of a track signal test circuit in an exemplary embodiment of the present disclosure Figure 2 ;

[0044] Figure 5 Schematically shows a schematic diagram of a track signal test circuit in an exemplary embodiment of the present disclosure Figure 3 ;

[0045] Figure 6 Schematically shows a flowchart of a method for determining the test result of track signal electromagnetic interference in an exemplary embodiment of the present disclosure;

[0046] Figure 7 Schematically shows a schematic diagram of a track signal waveform in an exemplary embodiment of the present disclosure;

[0047] Figure 8 Schematically shows a schematic diagram of a track signal spectrum in an exemplary embodiment of the present disclosure;

[0048] Figure 9 Schematically shows a block diagram of a track signal electromagnetic interference test device in an exemplary embodiment of the present disclosure;

[0049] Figure 10 Schematically shows a schematic diagram of a storage medium in an exemplary embodiment of the present disclosure;

[0050] Figure 11 Schematically shows a block diagram of an electronic device in an exemplary embodiment of the present disclosure.

[0051] In the drawings, the same or corresponding reference numerals denote the same or corresponding parts. Detailed embodiments

[0052] Hereinafter, the principles and spirit of the present invention will be described with reference to several exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and then implement the present invention, and not to limit the scope of the present invention in any way. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to be able to fully convey the scope of the present disclosure to those skilled in the art.

[0053] Those skilled in the art know that the embodiments of the present invention can be implemented as a system, a device, an apparatus, a method, or a computer program product. Therefore, the present disclosure can be specifically implemented in the following forms, namely: complete hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

[0054] In view of the deficiencies in the prior art, in this exemplary embodiment, a method for testing electromagnetic interference of track signals is first provided, which can improve the accuracy of the test results of electromagnetic interference of track signals. Refer to Figure 1 As shown in

[0055] S11. When the powered-off locomotive is located in the target section, adjust the input voltage of the track circuit until it is determined that the preset test conditions are met;

[0056] S12. When the preset test conditions are met, measure the first track signal output by the choke transformer in the track circuit and / or the second track signal output by the protection device in the track circuit;

[0057] S13. Perform Fourier transform on the first track signal and / or the second track signal to obtain a first transform result and / or a second transform result respectively;

[0058] S14. Determine the test result of electromagnetic interference of track signals according to the first transform result and / or the second transform result.

[0059] In summary, the method provided by the present disclosure adjusts the input voltage of the track circuit when the powered-off locomotive is located in the target section until it is determined that the preset test conditions are met; when the preset test conditions are met, measure the first track signal output by the choke transformer in the track circuit and the second track signal output by the protection device in the track circuit; perform Fourier transform on the first track signal and / or the second track signal to obtain a first transform result and / or a second transform result respectively; determine the test result of electromagnetic interference of track signals according to the first transform result and / or the second transform result, which can conveniently measure the first track signal and / or the second track signal directly at the output of the choke transformer in the track circuit and / or the output of the protection device in the track circuit, and then determine the test result of electromagnetic interference of track signals according to the directly measured first track signal and / or second track signal, thereby improving the accuracy of the test result of electromagnetic interference of track signals.

[0060] Next, each step in the node allocation method in this exemplary embodiment will be described in more detail with reference to the drawings and embodiments.

[0061] In S11, when the powered-off locomotive is located in the target section, adjust the input voltage of the track circuit until it is determined that the preset test conditions are met.

[0062] In an exemplary embodiment of the present disclosure, refer to Figure 2The track circuit shown includes: a sending device 201, a protection device 202, a choke transformer 203, a rail connection wire 204, a rail 205, and a receiving device 206. The protection device 202 includes a first protection device 2021 and a second protection device 2022; the choke transformer 203 includes a first choke transformer 2031 and a second choke transformer 2032, and the rail connection wire 204 includes a first rail connection wire 2041 and a second rail connection wire 2042.

[0063] Among them, one end of the sending device 201 is connected to the first protection device 2021, the other end of the first protection device 2021 is connected to the first end of the first choke transformer 2031, the second end of the first choke transformer 2031 is connected to the rail 205 through the first rail connection wire 2041, the receiving device 206 is connected to one end of the second protection device 2022, the other end of the second protection device 2022 is connected to the first end of the second choke transformer 2032, and the second end of the second choke transformer 2032 is connected to the rail 205 through the second rail connection wire 2042.

[0064] In an exemplary embodiment of the present disclosure, the sending device 201 sends a locomotive track control signal to the locomotive 207 to control the driving state of the locomotive 207. Specifically, the locomotive track control signal sent by the sending device 201 is transmitted to the first choke transformer 2031 through the first protection device 2021, transformed by the first choke transformer 2031 and then transmitted to the rail 205 through the first rail connection wire 2041, and then transmitted to the locomotive 207 located on the rail 205 to control the driving state of the locomotive 207.

[0065] Furthermore, the receiving device 206 can also receive the track signal sent by the locomotive 207. Specifically, the locomotive transmits the sent track signal to the rail 205, and then transmits it to the second choke transformer 2032 through the second first rail connection wire 2042, transformed by the second choke transformer 2032 and then transmitted to the second protection device 2022, and then transmitted to the receiving device 206 through the second protection device 2022.

[0066] In an exemplary embodiment of the present disclosure, the target section can be an adjacent section of the track circuit or the section corresponding to the track circuit. The track circuit can be a ZWP track circuit (such as a ZPW-2000 series track circuit) or a phase-sensitive track circuit (such as a 25Hz phase-sensitive track circuit), and no specific limitation is made here. Further, when the locomotive is located in the target section, under the condition that the locomotive is powered off, the input voltage of the track circuit, that is, the voltage of the sending device, is adjusted until it is determined that the preset test conditions are met.

[0067] In an exemplary embodiment of the present disclosure, when the target section is an adjacent section of the track circuit and the track circuit is a ZWP track circuit, the determination of meeting the preset test conditions includes:

[0068] When the voltage amplitude of the second track signal is greater than or equal to the first preset voltage threshold, it is determined that the preset test conditions are met.

[0069] In an exemplary embodiment of the present disclosure, the first preset voltage threshold is 240 mV. Specifically, when the target section is an adjacent section of the track circuit and the track circuit is an automatic block system ZWP track circuit, the voltage of the sending device is adjusted to reduce the voltage of the vehicle control track signal sent by the sending device, so that when the voltage amplitude of the second track signal is greater than or equal to 240 mV, the relay in the receiving device in the track circuit can be reliably pulled in. And when the voltage amplitude of the second track signal is greater than or equal to 240 mV, it is determined that the preset test conditions are met. It should be noted here that the present disclosure only exemplarily gives the value of the first preset voltage threshold, and the first preset voltage threshold can also be other values, and the present disclosure does not make specific limitations.

[0070] In an exemplary embodiment of the present disclosure, when the target section is the section corresponding to the track circuit and the track circuit is the ZWP track circuit, the determination of meeting the preset test conditions includes:

[0071] When the voltage amplitude of the second track signal is less than or equal to the second preset voltage threshold, it is determined that the preset test conditions are met, and the second preset voltage threshold is less than the first preset voltage threshold.

[0072] In an exemplary embodiment of the present disclosure, the second preset voltage threshold is 140 mV. Specifically, when the target section is the section corresponding to the track circuit and the track circuit is the ZWP track circuit, the voltage of the sending device and the voltage of the receiving device are adjusted so that when the voltage amplitude of the second track signal is less than or equal to 140 mV, the relay in the receiving device in the track circuit can be reliably dropped. And when the voltage amplitude of the second track signal is greater than or equal to 140 mV, it is determined that the preset test conditions are met. It should be noted here that the present disclosure only exemplarily gives the value of the second preset voltage threshold, and the second preset voltage threshold can also be other values, and the present disclosure does not make specific limitations.

[0073] In an exemplary embodiment of the present disclosure, when the target section is an adjacent section of the track circuit and the track circuit is a phase-sensitive track circuit, the determination of meeting the preset test conditions includes:

[0074] When the voltage amplitude of the second track signal is greater than or equal to a third preset voltage threshold, it is determined that the preset test condition is satisfied, and the third preset voltage threshold is greater than the first preset voltage threshold.

[0075] In an exemplary embodiment of the present disclosure, the third preset voltage threshold is 15V. Specifically, when the target section is an adjacent section of the track circuit and the track circuit is a phase-sensitive track circuit, the voltage of the sending device and the voltage of the receiving device are adjusted so that when the voltage amplitude of the second track signal is greater than or equal to 15V, the relay in the receiving device in the track circuit can be reliably pulled in. And when the voltage amplitude of the second track signal is greater than or equal to 15V, it is determined that the preset test condition is satisfied. It should be noted here that the present disclosure only exemplarily gives the value of the third preset voltage threshold, and the third preset voltage threshold can also be other values, and the present disclosure does not make specific limitations.

[0076] In an exemplary embodiment of the present disclosure, when the target section is the section corresponding to the track circuit and the track circuit is the phase-sensitive track circuit, the determination of satisfying the preset test condition includes:

[0077] When the voltage amplitude of the second track signal is less than or equal to a fourth preset voltage threshold, it is determined that the preset test condition is satisfied, and the fourth preset voltage threshold is greater than the first preset voltage threshold and less than the third preset voltage threshold.

[0078] In an exemplary embodiment of the present disclosure, the fourth preset voltage threshold is 10V. Specifically, when the target section is an adjacent section of the track circuit and the track circuit is a phase-sensitive track circuit, the voltage of the sending device and the voltage of the receiving device are adjusted so that when the voltage amplitude of the second track signal is less than or equal to 10V, the relay in the receiving device in the track circuit can be reliably pulled in. And when the voltage amplitude of the second track signal is less than or equal to 10V, it is determined that the preset test condition is satisfied. It should be noted here that the present disclosure only exemplarily gives the value of the fourth preset voltage threshold, and the fourth preset voltage threshold can also be other values, and the present disclosure does not make specific limitations.

[0079] In S12, when the preset test condition is satisfied, the first track signal output by the choke transformer in the track circuit and / or the second track signal output by the protection device in the track circuit is measured.

[0080] In an exemplary embodiment of the present disclosure, when the track circuit is a ZWP track circuit, if it is determined that the preset test condition is satisfied, when measuring the second track signal output by the second protection device, reference Figure 3As shown, the receiving device is located in the mechanical room of the signal building. The second track signal output by the second protection device is attenuated by the attenuator in the receiving device and then received by the electronic receiver located in the microcomputer cabinet in the receiving device. In the mechanical room of the signal building, the measuring device is connected to the output terminal of the electronic receiver in the microcomputer cabinet of the receiving device to measure the second track signal output by the second protection device. For example, Figure 3 As shown, the measuring device is a recorder (such as the Hioki 8880 recorder). In an exemplary embodiment of the present disclosure, the measuring device can also be an oscilloscope or other measuring devices, and the present disclosure does not make specific limitations.

[0081] In an exemplary embodiment of the present disclosure, when the track circuit is a phase-sensitive track circuit, if it is determined that the preset test conditions are met, when measuring the second track signal output by the second protection device, refer to Figure 4 As shown, the receiving device is located in the mechanical room of the signal building. The second track signal output by the second protection device is transmitted to the electronic receiver located in the microcomputer cabinet in the receiving device through the AC binary relay in the receiving device in the mechanical room of the signal building, and the second track signal is received by the electronic receiver. In the mechanical room of the signal building, the measuring device is connected to the output terminal of the electronic receiver in the microcomputer cabinet of the receiving device to measure the second track signal output by the second protection device.

[0082] In an exemplary embodiment of the present disclosure, if it is determined that the preset test conditions are met, when measuring the first track signal output by the choke transformer, refer to Figure 5 As shown, the measuring device is connected to the second choke transformer to measure the first track signal output by the second choke transformer, and the voltage of the first track signal is the rail surface voltage.

[0083] In S13, Fourier transform is performed on the first track signal and / or the second track signal to obtain a first transform result and / or a second transform result respectively.

[0084] In an exemplary embodiment of the present disclosure, when the track circuit is a ZWP track circuit, refer to Figure 3 , the measuring device measures the second track signal output by the second protection device at the output terminal of the electronic receiver in the microcomputer cabinet of the receiving device and transmits it to the computer, and the computer performs Fourier transform on the second track signal to obtain a second transform result.

[0085] In an exemplary embodiment of the present disclosure, when the track circuit is a phase-sensitive track circuit, refer to Figure 4 As shown, the measuring device measures the second track signal output by the second protection device at the output terminal of the electronic receiver in the microcomputer cabinet of the receiving device and transmits it to the computer, and the computer performs Fourier transform on the second track signal to obtain a second transform result.

[0086] In an exemplary embodiment of the present disclosure, when performing Fourier transform on the first track signal, refer to Figure 5 As shown, the first track signal obtained by measuring the output of the second choke transformer by the measuring device is transmitted to a computer, and the computer performs Fourier transform on the first track signal to obtain a first transformation result.

[0087] In S14, determine the track signal electromagnetic interference test result according to the first transformation result and / or the second transformation result.

[0088] Based on the above, in an exemplary embodiment of the present disclosure, as Figure 6 shown, the determining the track signal electromagnetic interference test result according to the first transformation result and / or the second transformation result includes:

[0089] S141. Obtain the first current amplitude of the first harmonic signal and / or the second current amplitude of the second harmonic signal from the first transformation result and / or the second transformation result, where the first harmonic signal is the largest harmonic signal in the first track signal, and the second harmonic signal is the largest harmonic signal in the second track signal;

[0090] S142. If the first current amplitude and / or the second current amplitude is less than or equal to a preset interference current threshold, determine that the track signal electromagnetic interference test passes.

[0091] In an exemplary embodiment of the present disclosure, when the track circuit is the ZWP track circuit, the filtering characteristics of the first track signal and / or the second track signal and the preset interference current threshold are shown in Table 1.

[0092] Track circuit type <![CDATA[f 0 / Hz]]> Δf / Hz <![CDATA[I 0 RMS / A]]> ZPW-2000 1700 90 0.3 ZPW-2000 2000 90 0.3 ZPW-2000 2300 90 0.3 ZPW-2000 2600 90 0.3

[0093] Table 1

[0094] where, f 0 is the frequency of the fundamental wave track signal in the first track signal and / or the second track signal, Δf represents the filter bandwidth, and I 0 RMS represents the preset interference current threshold. That is, when the first current amplitude of the first harmonic signal and / or the second current amplitude of the second harmonic signal is less than or the preset interference current threshold, it is determined that the track signal electromagnetic interference test passes.

[0095] In an exemplary embodiment of the present disclosure, the first voltage amplitude of the first harmonic signal and / or the second voltage amplitude of the second harmonic signal can also be obtained from the first transformation result and / or the second transformation result; and then determine the track signal electromagnetic interference test result according to the first voltage amplitude and / or the second voltage amplitude.

[0096] Specifically, when the track circuit is a 25Hz phase-sensitive circuit, the Figure 5 voltage waveform of the first track signal measured by the circuit shown is referenced Figure 7 . After Figure 7 performing a Fourier transform on the first track signal shown, the first transformation result obtained is the spectrum of the first track signal, and the spectrum of the first track signal can be referenced Figure 8 . As Figure 8 shown, the 25Hz track signal is the fundamental wave track signal of the first track signal, and the current amplitude of the fundamental wave track signal is 0.849V. The 50Hz second harmonic signal in the first track signal is the largest harmonic signal in the first track signal. The voltage amplitudes of the 50Hz second harmonic signal and other higher harmonic signals are all less than 0.1V. If the preset interference voltage threshold is 0.1V, it is determined that the track signal electromagnetic interference test passes.

[0097] Based on the above, in an exemplary embodiment of the present disclosure, the above method further includes:

[0098] S15. Obtain the difference between the second current amplitude and the first current amplitude;

[0099] S16. If the difference is greater than a preset threshold, determine that there is a conducted interference in the track circuit.

[0100] When the difference between the second current amplitude and the first current amplitude is greater than a first preset threshold, it is determined that there is a conducted interference in the track circuit, and the interference flows from the rail to the receiving device in the mechanical room of the signal building. The first preset threshold can be 0 or a number greater than 0, that is, when the second current amplitude is greater than the first current amplitude, it is determined that there is a conducted interference in the track circuit.

[0101] In another exemplary embodiment of the present disclosure, if the number of harmonic signals in the second track signal whose current amplitude is greater than or equal to the preset interference current threshold is greater than the number of harmonic signals in the first track signal whose current amplitude is greater than or equal to the preset interference current threshold, it is determined that there is a conducted interference in the track circuit, and the interference flows from the rail to the receiving device in the mechanical room of the signal building. For example, if the number of harmonic signals in the second track signal whose current amplitude is greater than or equal to the preset interference current threshold is 5, and the number of harmonic signals in the first track signal whose current amplitude is greater than or equal to the preset interference current threshold is 4, it is determined that there is a conducted interference in the track circuit.

[0102] In an exemplary embodiment of the present disclosure, the difference between the second voltage amplitude and the first voltage amplitude may also be obtained; if the difference between the second voltage amplitude and the first voltage amplitude is greater than a second preset threshold, it is determined that there is a conductive interference in the track circuit, and the interference flows from the rail to the receiving device in the signal building mechanical room. The second preset threshold may be 0 or a number greater than 0, that is, when the second voltage amplitude is greater than the first voltage amplitude, it is determined that there is a conductive interference in the track circuit.

[0103] In another exemplary embodiment of the present disclosure, if the number of harmonic signals with a voltage amplitude greater than or equal to a preset interference voltage threshold in the second track signal is greater than the number of harmonic signals with a voltage amplitude greater than or a preset interference voltage threshold in the first track signal, it is determined that there is a conductive interference in the track circuit, and the interference flows from the rail to the receiving device in the signal building mechanical room. For example, if the number of harmonic signals with a voltage amplitude greater than or equal to the preset interference voltage threshold in the second track signal is 6, and the number of harmonic signals with a voltage amplitude greater than or equal to the preset interference voltage threshold in the first track signal is 3, it is determined that there is a conductive interference in the track circuit.

[0104] In summary, the method provided by the present disclosure can conveniently measure the first track signal and / or the second track signal directly at the output of the choke transformer in the track circuit and / or at the output of the protection device in the track circuit, and then determine the test result of the track signal electromagnetic interference according to the directly measured first track signal and / or second track signal, improving the accuracy of the test result of the track signal electromagnetic interference.

[0105] After introducing the method for testing the electromagnetic interference of track signals in the exemplary embodiments of the present invention, next, reference is made to Figure 9 to describe the test device for electromagnetic interference of track signals in the exemplary embodiments of the present invention.

[0106] Reference is made to Figure 9 As shown, the test device 90 for electromagnetic interference of track signals in the exemplary embodiment of the present invention may include: an input voltage adjustment module 901, a track signal measurement module 902, a track signal transformation module 903, and a test result determination module 904. Among them,

[0107] The input voltage adjustment module 901 is configured to adjust the input voltage of the track circuit until it is determined that the preset test conditions are met when the locomotive in a powered-off state is located in the target section;

[0108] The track signal measurement module 902 is configured to measure the first track signal output by the choke transformer in the track circuit and the second track signal output by the protection device in the track circuit when the preset test conditions are met;

[0109] An orbital signal transformation module 903, configured to perform Fourier transform on the first orbital signal and / or the second orbital signal to obtain a first transformation result and / or a second transformation result respectively;

[0110] A test result determination module 904, configured to determine an orbital signal electromagnetic interference test result according to the first transformation result and / or the second transformation result.

[0111] In an exemplary embodiment of the present disclosure, when the target section is an adjacent section of the track circuit and the track circuit is a ZWP track circuit, the input voltage adjustment module is specifically configured to:

[0112] When the voltage amplitude of the second orbital signal is greater than or equal to a first preset voltage threshold, it is determined that the preset test condition is satisfied.

[0113] In an exemplary embodiment of the present disclosure, when the target section is the section corresponding to the track circuit and the track circuit is the ZWP track circuit, the input voltage adjustment module is specifically configured to:

[0114] When the voltage amplitude of the second orbital signal is less than or equal to a second preset voltage threshold, it is determined that the preset test condition is satisfied, and the second preset voltage threshold is less than the first preset voltage threshold.

[0115] In an exemplary embodiment of the present disclosure, when the target section is an adjacent section of the track circuit and the track circuit is a phase-sensitive track circuit, the input voltage adjustment module is specifically configured to:

[0116] When the voltage amplitude of the second orbital signal is greater than or equal to a third preset voltage threshold, it is determined that the preset test condition is satisfied, and the third preset voltage threshold is greater than the first preset voltage threshold.

[0117] In an exemplary embodiment of the present disclosure, when the target section is the section corresponding to the track circuit, the input voltage adjustment module is specifically configured to:

[0118] When the voltage amplitude of the second orbital signal is less than or equal to a fourth preset voltage threshold, it is determined that the preset test condition is satisfied, and the fourth preset voltage threshold is greater than the first preset voltage threshold and less than the third preset voltage threshold.

[0119] In an exemplary embodiment of the present disclosure, the test result determination module includes:

[0120] A harmonic acquisition unit is configured to obtain a first current amplitude of a first harmonic signal and / or a second current amplitude of a second harmonic signal from the first transformation result and / or the second transformation result, where the first harmonic signal is the largest harmonic signal in the first track signal, and the second harmonic signal is the largest harmonic signal in the second track signal;

[0121] A test result acquisition unit is configured to determine that the electromagnetic interference test of the track signal passes if the first current amplitude and / or the second current amplitude is less than or equal to a preset interference current threshold.

[0122] In an exemplary embodiment of the present disclosure, the apparatus further includes: a conducted interference determination module, configured to:

[0123] Obtain a difference between the second current amplitude and the first current amplitude; if the difference is greater than a preset threshold, determine that there is conducted interference in the track circuit.

[0124] Since each functional module of the track signal electromagnetic interference test apparatus according to the embodiments of the present invention is the same as that in the embodiments of the track signal electromagnetic interference test method of the present invention, details thereof will not be described herein again.

[0125] After introducing the track signal electromagnetic interference test method and the track signal electromagnetic interference test apparatus of the exemplary embodiments of the present invention, next, reference is made to Figure 10 to describe the storage medium of the exemplary embodiments of the present invention.

[0126] Reference is made to Figure 10 As shown, a program product 100 for implementing the above method according to an embodiment of the present invention is described. It may be a portable compact disc read-only memory (CD-ROM) and includes program code, and can run on a device, such as a personal computer. However, the program product of the present invention is not limited thereto. In this document, a readable storage medium may be any tangible medium that contains or stores a program, and the program can be used by or in combination with an instruction execution system, apparatus, or device.

[0127] The program product may employ any combination of one or more readable media. The readable media may be a readable track signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the readable storage medium (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0128] The computer-readable track signal medium may include data track signals propagated in a baseband or as part of a carrier wave, which carry the readable program code. Such propagated data track signals may take various forms, including but not limited to electromagnetic track signals, optical track signals, or any suitable combination of the foregoing. The readable track signal medium may also be any readable medium other than the readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0129] The program code contained on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0130] The program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages such as Java, C++, etc., and also including conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user's computing device, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user's computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., by connecting through the Internet using an Internet service provider).

[0131] After introducing the storage medium of the exemplary embodiments of the present invention, next, reference is made to Figure 11 the electronic device of the exemplary embodiments of the present invention will be described.

[0132] Figure 11 The displayed electronic device 110 is merely an example and should not impose any limitation on the functions and usage scope of the embodiments of the present invention.

[0133] As shown Figure 11 in the figure, the electronic device 110 is presented in the form of a general-purpose computing device. The components of the electronic device 110 may include, but are not limited to: at least one of the above-mentioned processing units 1110, at least one of the above-mentioned storage units 1120, a bus 1130 connecting different system components (including the storage unit 1120 and the processing unit 710), and a display unit 1140.

[0134] Among them, the storage unit stores program code, and the program code can be executed by the processing unit 1110, so that the processing unit 1110 executes the steps according to various exemplary embodiments of the present invention described in the "Exemplary Method" section of the present specification above. For example, the processing unit 1110 can execute steps S11 to S14 as shown Figure 1 in the figure.

[0135] The storage unit 1120 may include a volatile storage unit, such as a random access storage unit (RAM) 11201 and / or a cache storage unit 11202, and may further include a read-only storage unit (ROM) 11203. The storage unit 1120 may also include a program / utility 11204 having a set (at least one) of program modules 11205. Such program modules 11205 include, but are not limited to: an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include the implementation of a network environment.

[0136] The bus 1130 may include a data bus, an address bus, and a control bus.

[0137] The electronic device 110 may also communicate with one or more external devices 120 (such as a keyboard, a pointing device, a Bluetooth device, etc.), and such communication may be performed through an input / output (I / O) interface 750. The electronic device 110 further includes a display unit 1140, which is connected to the input / output (I / O) interface 1150 for display. And, the electronic device 110 may also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through a network adapter 1160. As shown in the figure, the network adapter 1160 communicates with other modules of the electronic device 110 through the bus 1130. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in combination with the electronic device 110, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0138] It should be noted that although several modules or sub - modules of the spatial data rendering system are mentioned in the above - detailed description, this division is merely exemplary and not mandatory. In fact, according to the embodiments of the present invention, the features and functions of two or more of the above - described units / modules can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0139] In addition, although the operations of the method of the present invention are described in a specific order in the drawings, this does not require or imply that the operations must be performed in that specific order, or that all of the operations shown must be performed to achieve the desired result. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step for execution, and / or one step may be decomposed into multiple steps for execution.

[0140] Although the spirit and principles of the present invention have been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed, and the division of various aspects does not mean that the features in these aspects cannot be combined for benefit. This division is only for convenience of expression. The present invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A method for testing electromagnetic interference of track signals, characterized in that, it includes: When the locomotive with power off is located in the target section, adjust the input voltage of the track circuit until it is determined that the preset test conditions are met; When the preset test conditions are met, measure the first track signal output by the choke transformer in the track circuit and / or the second track signal output by the protection device in the track circuit; Perform Fourier transform on the first track signal and / or the second track signal to obtain a first transformation result and / or a second transformation result respectively; Determine the test result of electromagnetic interference of track signals according to the first transformation result and / or the second transformation result, including: Obtain the first current amplitude of the first harmonic signal and / or the second current amplitude of the second harmonic signal from the first transformation result and / or the second transformation result, where the first harmonic signal is the largest harmonic signal in the first track signal, and the second harmonic signal is the largest harmonic signal in the second track signal; If the first current amplitude and / or the second current amplitude is less than or equal to the preset interference current threshold, it is determined that the test of electromagnetic interference of track signals passes; The method further includes: Obtain the difference between the second current amplitude and the first current amplitude; If the difference is greater than the preset threshold, it is determined that there is a conduction interference in the track circuit.

2. The method according to claim 1, characterized in that, When the target section is an adjacent section of the track circuit and the track circuit is a ZWP track circuit, the determination of meeting the preset test conditions includes: When the voltage amplitude of the second track signal is greater than or equal to the first preset voltage threshold, it is determined that the preset test conditions are met.

3. The method according to claim 2, characterized in that, When the target section is the section corresponding to the track circuit and the track circuit is the ZWP track circuit, the determination of meeting the preset test conditions includes: When the voltage amplitude of the second track signal is less than or equal to the second preset voltage threshold, it is determined that the preset test conditions are met, and the second preset voltage threshold is less than the first preset voltage threshold.

4. The method according to claim 2, characterized in that, When the target section is an adjacent section of the track circuit and the track circuit is a phase-sensitive track circuit, the determination of meeting the preset test conditions includes: When the voltage amplitude of the second track signal is greater than or equal to the third preset voltage threshold, it is determined that the preset test conditions are met, and the third preset voltage threshold is greater than the first preset voltage threshold.

5. The method according to claim 4, characterized in that, When the target section is the section corresponding to the track circuit and the track circuit is the phase-sensitive track circuit, the determination of meeting the preset test conditions includes: When the voltage amplitude of the second track signal is less than or equal to the fourth preset voltage threshold, it is determined that the preset test conditions are met, and the fourth preset voltage threshold is greater than the first preset voltage threshold and less than the third preset voltage threshold.

6. A device for testing electromagnetic interference of track signals, characterized in that, it includes: An input voltage adjustment module, configured to adjust the input voltage of the track circuit until it is determined that a preset test condition is met when the powered-off locomotive is located in the target section; A track signal measurement module, configured to measure a first track signal output by a choke transformer in the track circuit and a second track signal output by a protection device in the track circuit when the preset test condition is met; A track signal transformation module, configured to perform Fourier transform on the first track signal and / or the second track signal to obtain a first transformation result and / or a second transformation result respectively; A test result determination module, configured to determine a track signal electromagnetic interference test result according to the first transformation result and / or the second transformation result; The test result determination module includes: A harmonic acquisition unit, configured to acquire a first current amplitude of a first harmonic signal and / or a second current amplitude of a second harmonic signal from the first transformation result and / or the second transformation result, where the first harmonic signal is the largest harmonic signal in the first track signal, and the second harmonic signal is the largest harmonic signal in the second track signal; A test result acquisition unit, configured to determine that the track signal electromagnetic interference test passes if the first current amplitude and / or the second current amplitude is less than or equal to a preset interference current threshold; The device further includes: a conducted interference determination module, configured to acquire a difference between the second current amplitude and the first current amplitude; if the difference is greater than a preset threshold, it is determined that there is conducted interference in the track circuit.

7. A computer-readable storage medium, on which a computer program is stored, characterized in that, when the program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

8. An electronic device, characterized in that, including: a processor; and a memory, configured to store executable instructions of the processor; wherein, the processor is configured to execute the steps of the method according to any one of claims 1 to 5 by executing the executable instructions.

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