Railway port freight yard dispatching signal cable path integrated management method and system

Abstract

The invention relates to the technical field of cable detection, and discloses a railway port goods yard dispatching signal cable path integrated management method and system, and the method comprises the steps: collecting target test data generated by a to-be-detected railway cable responding to a target test dispatching control monitoring system; the reflection point position, reflection point return loss, impedance parameter, frequency band return loss and echo current of the cable are determined according to the target test data, the reflection point return loss is the return loss corresponding to the reflection point position, and the impedance parameter is used for indicating the cable impedance of the reflection point position; the frequency band return loss is the corresponding return loss of the railway cable on the target frequency band, and the return current is the current of a power supply channel in the railway cable under the target voltage; detecting a fault position and a fault reason on the railway cable according to the reflection point position, the reflection point return loss, the impedance parameter, the frequency band return loss and the return current; according to the invention, the problems of low maintenance efficiency and incapability of positioning cable fault points in time in cable path management are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable detection, and in particular to a method and system for comprehensive management of cable paths of dispatching signals in railway port freight yards. Background Art

[0002] With the development of new technologies, cable fault location and cable management are crucial. Taking into account situations such as water damage, landslides or human damage to cables, it is necessary to quickly locate the fault point, find out the cable position in advance, and be familiar with the on-site information, which can effectively improve the efficiency of emergency repairs. In the process of reconstruction and construction of existing railway lines, it often involves cable relocation, protection, cutting and other work. The cable situation is extremely complicated, and inadequate construction will directly affect the operating efficiency and even railway driving safety.

[0003] Cables are the main maintenance objects of railway electrical system operation and maintenance personnel. At present, the management and record keeping of cable paths are mainly based on paper materials. Due to the different update situations of electronic and paper materials, the two are prone to inconsistency and asynchrony in content. At the same time, paper and electronic materials are handed over and kept by multiple people, which leads to the loss and incompleteness of paper and electronic materials. When a failure or problem occurs, the asynchrony of data and the loss and incompleteness of data will greatly reduce the maintenance efficiency, and when the cable fails, the fault point cannot be located in time. It can be seen that the existing cable path management has the problems of low maintenance efficiency and inability to locate the cable fault point in time. Summary of the invention

[0004] The present invention provides a railway port freight yard dispatching signal cable path comprehensive management method and system to solve the problems of low maintenance efficiency and inability to locate cable fault points in time in the existing cable path management.

[0005] In order to achieve the above object, the present invention is implemented by the following technical solutions: In a first aspect, the present invention provides a method for integrated management of cable paths of railway port freight yard dispatching signals, comprising: Collecting target test data generated by the railway cable to be tested in response to the target test signal, wherein the railway cable is a cable connecting the outdoor equipment of the freight yard dispatching control and monitoring system to the indoor control system; Determine the reflection point position, reflection point return loss, impedance parameter, frequency band return loss and return current of the railway cable according to the target test data, wherein the reflection point position is used to indicate the farthest distance from the reflection point in the railway cable to the test position, the reflection point return loss is the return loss corresponding to the reflection point position, the impedance parameter is used to indicate the cable impedance at the reflection point position, the frequency band return loss is the return loss corresponding to the railway cable at the target frequency band, and the return current is the current of the power channel in the railway cable at the target voltage; The fault location and fault cause on the railway cable are detected according to the reflection point position, the reflection point return loss, the impedance parameter, the frequency band return loss and the return current.

[0006] Optionally, detecting the fault location and fault cause on the railway cable according to the reflection point position, the reflection point return loss, the impedance parameter, the frequency band return loss and the return current includes: Obtaining a first length threshold corresponding to the cable length of the railway cable, wherein the first length threshold is a difference between the cable length and a first preset error; comparing the reflection point position with the first length threshold; When the position of the reflection point is greater than or equal to the first length threshold, detecting the fault position and fault cause on the railway cable according to the reflection point return loss, the frequency band return loss and the return current; When the position of the reflection point is less than the first length threshold, the fault position and the fault cause on the railway cable are detected according to the reflection point return loss and the impedance parameter.

[0007] Optionally, the detecting the fault location and the fault cause on the railway cable according to the reflection point return loss, the frequency band return loss and the return current includes: Comparing the reflection point return loss with a first loss threshold; When the return loss at the reflection point is greater than or equal to the first loss threshold, the frequency band return loss is compared with the second loss threshold; when the frequency band return loss is greater than or equal to the second loss threshold, the reflection point position is compared with the second length threshold, wherein the second length threshold is the sum of the cable length and a second preset error; when the reflection point position is less than or equal to the second length threshold, it is determined that the fault position is the electronic red sign subsystem, and the fault cause is a fault in the switch control cable of the electronic red sign subsystem; When the return loss at the reflection point is less than the first loss threshold, the fault location and the fault cause on the railway cable are detected according to the return current.

[0008] Optionally, detecting a fault location and a fault cause on the railway cable according to the echo current includes: comparing the echo current with a first current threshold; When the echo current is greater than or equal to the first current threshold, determining that the fault location is the railway cable, and the fault cause is a cable short circuit and leakage; When the echo current is less than the first current threshold, comparing the echo current with a second current threshold; When the echo current is less than or equal to the second current threshold, it is determined that the fault location is the railway cable, and the fault cause is an open circuit of the cable.

[0009] Optionally, the detecting the fault location and the fault cause on the railway cable according to the reflection point return loss and the impedance parameter includes: Comparing the reflection point return loss with a third loss threshold; When the reflection point return loss is greater than or equal to the third loss threshold, comparing the resistance parameter included in the impedance parameter with a resistance threshold range; When the resistance parameter is greater than or equal to the upper limit of the resistance threshold range, determining that the fault location on the railway cable is the railway cable, and the fault cause is an open circuit of the cable; When the resistance parameter is less than or equal to the lower limit value of the resistance threshold range, the fault location on the railway cable is determined to be the railway cable, and the fault cause is detected according to the capacitance parameter included in the impedance parameter and the capacitance threshold range.

[0010] Optionally, detecting the fault cause according to a capacitance parameter and a capacitance threshold range included in the impedance parameter includes: comparing the capacitance parameter to the capacitance threshold range; When the capacitance parameter is greater than or equal to an upper limit value of the capacitance threshold range, determining that the fault cause is a cable capacitive fault; When the capacitance parameter falls within the capacitance threshold range, determining that the fault cause is reflection in the middle section of the cable; When the capacitance parameter is less than or equal to the lower limit value of the capacitance threshold range, it is determined that the fault cause is a cable inductive fault.

[0011] Optionally, determining the reflection point position, reflection point return loss, impedance parameters, frequency band return loss and return current of the railway cable according to the target test data includes: Determine the reflection point position and the reflection point return loss according to the frequency and scattering parameters having a corresponding relationship, wherein the target test data includes the frequency and scattering parameters having a corresponding relationship; Obtaining a first scattering parameter corresponding to a preset frequency from frequencies and scattering parameters having a corresponding relationship; calculating the impedance parameter according to the first scattering parameter; Obtaining a second scattering parameter corresponding to the receiving and transmitting frequency of the railway cable from the frequencies and scattering parameters having a corresponding relationship; determining the frequency band return loss according to the second scattering parameter; The echo current is extracted from the target test data.

[0012] Optionally, the method further includes: Establishing a cable health data resource pool according to the fault location and fault cause on the railway cable, and defining an intelligent entity of various parameters of the railway cable; Construct a health indicator data analysis model based on the data in the cable health data pool and various parameters in the historical intelligent agent; Obtain various parameters in the intelligent agent at the current moment, and input various parameters in the intelligent agent at the current moment into the health indicator data analysis model to obtain the confidence level of the cable health indicator data corresponding to the intelligent agent; Compare the confidence of the cable health index data with a preset health threshold, and when the confidence of the cable health index data is greater than or equal to the preset health threshold, judge that the railway cable corresponding to the current intelligent agent is in a healthy state, and when the confidence of the cable health index data is less than the preset health threshold, judge that the railway cable corresponding to the current intelligent agent is in a fault state or is about to fail; The intelligent agent includes: a position or a node corresponding to the railway cable and various parameters of the cable corresponding to the position or the node.

[0013] In a second aspect, an embodiment of the present application provides a railway port freight yard dispatching signal cable path integrated management system, including: An acquisition module, used for acquiring target test data generated by a railway cable to be detected in response to a target test signal, wherein the railway cable is a cable connecting an outdoor device of a freight yard dispatching control and monitoring system to an indoor control system; a determination module, configured to determine the reflection point position, reflection point return loss, impedance parameter, frequency band return loss and return current of the railway cable according to the target test data, wherein the reflection point position is used to indicate the farthest distance from the reflection point in the railway cable to the test position, the reflection point return loss is the return loss corresponding to the reflection point position, the impedance parameter is used to indicate the cable impedance at the reflection point position, the frequency band return loss is the return loss corresponding to the railway cable at the target frequency band, and the return current is the current of the power channel in the railway cable at the target voltage; The detection module is used to detect the fault location and fault cause on the railway cable according to the reflection point position, the reflection point return loss, the impedance parameter, the frequency band return loss and the return current.

[0014] Optionally, the system further comprises: a health analysis module; The health analysis module is used to establish a cable health data resource pool according to the fault location and fault cause on the railway cable, define the intelligent body of various parameters of the railway cable; and construct a health indicator data analysis model based on the data in the cable health data pool and various parameters in the historical intelligent body; The health analysis module is also used to obtain various parameters in the intelligent agent at the current moment, and input various parameters in the intelligent agent at the current moment into the health index data analysis model to obtain the confidence of the cable health index data corresponding to the intelligent agent; Compare the confidence of the cable health index data with a preset health threshold, and when the confidence of the cable health index data is greater than or equal to the preset health threshold, judge that the railway cable corresponding to the current intelligent agent is in a healthy state, and when the confidence of the cable health index data is less than the preset health threshold, judge that the railway cable corresponding to the current intelligent agent is in a fault state or is about to fail; The intelligent agent includes: a position or a node corresponding to the railway cable and various parameters of the cable corresponding to the position or the node.

[0015] Beneficial effects: The present invention provides a comprehensive management method for the cable path of the railway port freight yard dispatching signal. The railway cable is the cable connecting the outdoor equipment of the freight yard dispatching control monitoring system to the indoor control system. The target test data generated by the railway cable to be detected in response to the target test signal is collected. According to the collected target test data, the reflection point position, reflection point return loss, impedance parameters, frequency band return loss and return current of the railway cable are obtained. According to these parameters, the fault position on the railway cable is accurately located, and the cause of the fault is analyzed. The above technical solution solves the problem of low accuracy in detecting railway cable faults in related technologies, and achieves the technical effect of improving the accuracy of detecting railway cable faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a flow chart of a method for integrated management of railway port freight yard dispatching signal cable paths according to a preferred embodiment of the present invention; Figure 2 This is a structural diagram of a railway port freight yard dispatching signal cable path integrated management system according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate quantity restrictions, but indicate the existence of at least one. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0019] See also Figure 1 The embodiment of the present application provides a method for comprehensive management of railway port freight yard dispatching signal cable paths, including: Collecting target test data generated by the railway cable to be tested in response to the target test signal, wherein the railway cable is a cable connecting the outdoor equipment of the freight yard dispatching control and monitoring system to the indoor control system; Determine the reflection point position, reflection point return loss, impedance parameter, frequency band return loss and return current of the railway cable according to the target test data, wherein the reflection point position is used to indicate the farthest distance from the reflection point in the railway cable to the test position, the reflection point return loss is the return loss corresponding to the reflection point position, the impedance parameter is used to indicate the cable impedance at the reflection point position, the frequency band return loss is the return loss corresponding to the railway cable at the target frequency band, and the return current is the current of the power channel in the railway cable at the target voltage; The fault location and fault cause on the railway cable are detected according to the reflection point position, the reflection point return loss, the impedance parameter, the frequency band return loss and the return current.

[0020] Optionally, detecting the fault location and fault cause on the railway cable according to the reflection point position, the reflection point return loss, the impedance parameter, the frequency band return loss and the return current includes: Obtaining a first length threshold corresponding to the cable length of the railway cable, wherein the first length threshold is a difference between the cable length and a first preset error; comparing the reflection point position with the first length threshold; When the position of the reflection point is greater than or equal to the first length threshold, detecting the fault position and fault cause on the railway cable according to the reflection point return loss, the frequency band return loss and the return current; When the position of the reflection point is less than the first length threshold, the fault position and the fault cause on the railway cable are detected according to the reflection point return loss and the impedance parameter.

[0021] Optionally, the detecting the fault location and the fault cause on the railway cable according to the reflection point return loss, the frequency band return loss and the return current includes: Comparing the reflection point return loss with a first loss threshold; When the return loss at the reflection point is greater than or equal to the first loss threshold, the frequency band return loss is compared with the second loss threshold; when the frequency band return loss is greater than or equal to the second loss threshold, the reflection point position is compared with the second length threshold, wherein the second length threshold is the sum of the cable length and a second preset error; when the reflection point position is less than or equal to the second length threshold, it is determined that the fault position is the electronic red sign subsystem, and the fault cause is a fault in the switch control cable of the electronic red sign subsystem; When the return loss at the reflection point is less than the first loss threshold, the fault location and the fault cause on the railway cable are detected according to the return current.

[0022] Optionally, detecting a fault location and a fault cause on the railway cable according to the echo current includes: comparing the echo current with a first current threshold; When the echo current is greater than or equal to the first current threshold, determining that the fault location is the railway cable, and the fault cause is a cable short circuit and leakage; When the echo current is less than the first current threshold, comparing the echo current with a second current threshold; When the echo current is less than or equal to the second current threshold, it is determined that the fault location is the railway cable, and the fault cause is an open circuit of the cable.

[0023] Optionally, the detecting the fault location and the fault cause on the railway cable according to the reflection point return loss and the impedance parameter includes: Comparing the reflection point return loss with a third loss threshold; When the reflection point return loss is greater than or equal to the third loss threshold, comparing the resistance parameter included in the impedance parameter with a resistance threshold range; When the resistance parameter is greater than or equal to the upper limit of the resistance threshold range, determining that the fault location on the railway cable is the railway cable, and the fault cause is an open circuit of the cable; When the resistance parameter is less than or equal to the lower limit value of the resistance threshold range, the fault location on the railway cable is determined to be the railway cable, and the fault cause is detected according to the capacitance parameter included in the impedance parameter and the capacitance threshold range.

[0024] Optionally, detecting the fault cause according to a capacitance parameter and a capacitance threshold range included in the impedance parameter includes: comparing the capacitance parameter to the capacitance threshold range; When the capacitance parameter is greater than or equal to an upper limit value of the capacitance threshold range, determining that the fault cause is a cable capacitive fault; When the capacitance parameter falls within the capacitance threshold range, determining that the fault cause is reflection in the middle section of the cable; When the capacitance parameter is less than or equal to the lower limit value of the capacitance threshold range, it is determined that the fault cause is a cable inductive fault.

[0025] Optionally, determining the reflection point position, reflection point return loss, impedance parameters, frequency band return loss and return current of the railway cable according to the target test data includes: Determine the reflection point position and the reflection point return loss according to the frequency and scattering parameters having a corresponding relationship, wherein the target test data includes the frequency and scattering parameters having a corresponding relationship; Obtaining a first scattering parameter corresponding to a preset frequency from frequencies and scattering parameters having a corresponding relationship; calculating the impedance parameter according to the first scattering parameter; Obtaining a second scattering parameter corresponding to the receiving and transmitting frequency of the railway cable from the frequencies and scattering parameters having a corresponding relationship; determining the frequency band return loss according to the second scattering parameter; The echo current is extracted from the target test data.

[0026] Optionally, the method further includes: Establishing a cable health data resource pool according to the fault location and fault cause on the railway cable, and defining an intelligent entity of various parameters of the railway cable; Construct a health indicator data analysis model based on the data in the cable health data pool and various parameters in the historical intelligent agent; Obtain various parameters in the intelligent agent at the current moment, and input various parameters in the intelligent agent at the current moment into the health indicator data analysis model to obtain the confidence level of the cable health indicator data corresponding to the intelligent agent; Compare the confidence of the cable health index data with a preset health threshold, and when the confidence of the cable health index data is greater than or equal to the preset health threshold, judge that the railway cable corresponding to the current intelligent agent is in a healthy state, and when the confidence of the cable health index data is less than the preset health threshold, judge that the railway cable corresponding to the current intelligent agent is in a fault state or is about to fail; The intelligent agent includes: a position or a node corresponding to the railway cable and various parameters of the cable corresponding to the position or the node.

[0027] In the above embodiment, based on the previous cable fault data and the analyzed data results, a deep reinforcement learning method is adopted to establish a cable health data resource pool, define intelligent agents for various cable parameters, and generate cable health indicator data confidence through training. Through the continuous accumulation of data, it is possible to predict and analyze at which point the cable may fail in the future or the time period when the failure may occur.

[0028] See also Figure 2 The embodiment of the present application also provides a railway port freight yard dispatching signal cable path integrated management system, including: An acquisition module, used for acquiring target test data generated by a railway cable to be detected in response to a target test signal, wherein the railway cable is a cable connecting an outdoor device of a freight yard dispatching control and monitoring system to an indoor control system; a determination module, configured to determine the reflection point position, reflection point return loss, impedance parameter, frequency band return loss and return current of the railway cable according to the target test data, wherein the reflection point position is used to indicate the farthest distance from the reflection point in the railway cable to the test position, the reflection point return loss is the return loss corresponding to the reflection point position, the impedance parameter is used to indicate the cable impedance at the reflection point position, the frequency band return loss is the return loss corresponding to the railway cable at the target frequency band, and the return current is the current of the power channel in the railway cable at the target voltage; The detection module is used to detect the fault location and fault cause on the railway cable according to the reflection point position, the reflection point return loss, the impedance parameter, the frequency band return loss and the return current.

[0029] Optionally, the system further comprises: a health analysis module; The health analysis module is used to establish a cable health data resource pool according to the fault location and fault cause on the railway cable, define the intelligent body of various parameters of the railway cable; and construct a health indicator data analysis model based on the data in the cable health data pool and various parameters in the historical intelligent body; The health analysis module is also used to obtain various parameters in the intelligent agent at the current moment, and input various parameters in the intelligent agent at the current moment into the health index data analysis model to obtain the confidence of the cable health index data corresponding to the intelligent agent; Compare the confidence of the cable health index data with a preset health threshold, and when the confidence of the cable health index data is greater than or equal to the preset health threshold, judge that the railway cable corresponding to the current intelligent agent is in a healthy state, and when the confidence of the cable health index data is less than the preset health threshold, judge that the railway cable corresponding to the current intelligent agent is in a fault state or is about to fail; The intelligent agent includes: a position or a node corresponding to the railway cable and various parameters of the cable corresponding to the position or the node.

[0030] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A method for comprehensive management of cable paths for dispatching signal at railway port freight yards, characterized in that: include: Collecting target test data generated by a railway cable to be tested in response to a target test signal, wherein the railway cable is a cable connecting an outdoor device of a dispatching control and monitoring system to an indoor control system; Determine the reflection point position, reflection point return loss, impedance parameter, frequency band return loss and return current of the railway cable according to the target test data, wherein the reflection point position is used to indicate the farthest distance from the reflection point in the railway cable to the test position, the reflection point return loss is the return loss corresponding to the reflection point position, the impedance parameter is used to indicate the cable impedance at the reflection point position, the frequency band return loss is the return loss corresponding to the railway cable at the target frequency band, and the return current is the current of the power channel in the railway cable at the target voltage; The fault location and fault cause on the railway cable are detected according to the reflection point position, the reflection point return loss, the impedance parameter, the frequency band return loss and the return current.

2. The railway port freight yard dispatching signal cable path comprehensive management method according to claim 1 is characterized in that: The detecting the fault location and the fault cause on the railway cable according to the reflection point position, the reflection point return loss, the impedance parameter, the frequency band return loss and the return current comprises: Obtaining a first length threshold corresponding to the cable length of the railway cable, wherein the first length threshold is a difference between the cable length and a first preset error; comparing the reflection point position with the first length threshold; When the position of the reflection point is greater than or equal to the first length threshold, detecting the fault position and fault cause on the railway cable according to the reflection point return loss, the frequency band return loss and the return current; When the position of the reflection point is less than the first length threshold, the fault position and the fault cause on the railway cable are detected according to the reflection point return loss and the impedance parameter.

3. The integrated management method for railway port freight yard dispatching signal cable paths according to claim 2 is characterized in that: The detecting the fault location and the fault cause on the railway cable according to the reflection point return loss, the frequency band return loss and the return current comprises: Comparing the reflection point return loss with a first loss threshold; When the return loss at the reflection point is greater than or equal to the first loss threshold, the frequency band return loss is compared with the second loss threshold; when the frequency band return loss is greater than or equal to the second loss threshold, the reflection point position is compared with the second length threshold, wherein the second length threshold is the sum of the cable length and a second preset error; when the reflection point position is less than or equal to the second length threshold, it is determined that the fault location is the outdoor electronic red card and other system equipment, and the fault cause is an electronic red card subsystem failure; When the return loss at the reflection point is less than the first loss threshold, the fault location and the fault cause on the railway cable are detected according to the return current.

4. The integrated management method for railway port freight yard dispatching signal cable paths according to claim 3 is characterized in that: The detecting the fault location and the fault cause on the railway cable according to the echo current comprises: comparing the echo current with a first current threshold; When the echo current is greater than or equal to the first current threshold, determining that the fault location is the railway cable, and the fault cause is a cable short circuit and leakage; When the echo current is less than the first current threshold, comparing the echo current with a second current threshold; When the echo current is less than or equal to the second current threshold, it is determined that the fault location is the railway cable, and the fault cause is an open circuit of the cable.

5. The integrated management method for railway port freight yard dispatching signal cable paths according to claim 2 is characterized in that: The detecting the fault location and the fault cause on the railway cable according to the reflection point return loss and the impedance parameter comprises: Comparing the reflection point return loss with a third loss threshold; When the reflection point return loss is greater than or equal to the third loss threshold, comparing the resistance parameter included in the impedance parameter with a resistance threshold range; When the resistance parameter is greater than or equal to the upper limit of the resistance threshold range, determining that the fault location on the railway cable is the railway cable, and the fault cause is an open circuit of the cable; When the resistance parameter is less than or equal to the lower limit value of the resistance threshold range, the fault location on the railway cable is determined to be the railway cable, and the fault cause is detected according to the capacitance parameter included in the impedance parameter and the capacitance threshold range.

6. The integrated management method for railway port freight yard dispatching signal cable paths according to claim 5 is characterized in that: The detecting the fault cause according to the capacitance parameter and the capacitance threshold range included in the impedance parameter includes: comparing the capacitance parameter to the capacitance threshold range; When the capacitance parameter is greater than or equal to an upper limit value of the capacitance threshold range, determining that the fault cause is a cable capacitive fault; When the capacitance parameter falls within the capacitance threshold range, determining that the fault cause is reflection in the middle section of the cable; When the capacitance parameter is less than or equal to the lower limit value of the capacitance threshold range, it is determined that the fault cause is a cable inductive fault.

7. The integrated management method for railway port freight yard dispatching signal cable paths according to claim 1, characterized in that: The method of determining the reflection point position, reflection point return loss, impedance parameters, frequency band return loss and return current of the railway cable according to the target test data includes: Determine the reflection point position and the reflection point return loss according to the frequency and scattering parameters having a corresponding relationship, wherein the target test data includes the frequency and scattering parameters having a corresponding relationship; Obtaining a first scattering parameter corresponding to a preset frequency from frequencies and scattering parameters having a corresponding relationship; calculating the impedance parameter according to the first scattering parameter; Obtaining a second scattering parameter corresponding to the receiving and transmitting frequency of the railway cable from the frequencies and scattering parameters having a corresponding relationship; determining the frequency band return loss according to the second scattering parameter; The echo current is extracted from the target test data.

8. The railway port freight yard dispatching signal cable path comprehensive management method according to claim 1 is characterized in that: The method further comprises: Establishing a cable health data resource pool according to the fault location and fault cause on the railway cable, and defining an intelligent entity of various parameters of the railway cable; Construct a health indicator data analysis model based on the data in the cable health data pool and various parameters in the historical intelligent agent; Obtain various parameters in the intelligent agent at the current moment, and input various parameters in the intelligent agent at the current moment into the health indicator data analysis model to obtain the confidence level of the cable health indicator data corresponding to the intelligent agent; Compare the confidence of the cable health index data with a preset health threshold, and when the confidence of the cable health index data is greater than or equal to the preset health threshold, judge that the railway cable corresponding to the current intelligent agent is in a healthy state, and when the confidence of the cable health index data is less than the preset health threshold, judge that the railway cable corresponding to the current intelligent agent is in a fault state or is about to fail; The intelligent agent includes: a position or a node corresponding to the railway cable and various parameters of the cable corresponding to the position or the node.

9. A railway port freight yard dispatching signal cable path integrated management system, characterized in that: include: An acquisition module, used for acquiring target test data generated by a railway cable to be detected in response to a target test signal, wherein the railway cable is a cable connecting a transponder transmission module BTM and a compact antenna unit CAU on a railway vehicle; a determination module, configured to determine the reflection point position, reflection point return loss, impedance parameter, frequency band return loss and return current of the railway cable according to the target test data, wherein the reflection point position is used to indicate the farthest distance from the reflection point in the railway cable to the test position, the reflection point return loss is the return loss corresponding to the reflection point position, the impedance parameter is used to indicate the cable impedance at the reflection point position, the frequency band return loss is the return loss corresponding to the railway cable at the target frequency band, and the return current is the current of the power channel in the railway cable at the target voltage; The detection module is used to detect the fault location and fault cause on the railway cable according to the reflection point position, the reflection point return loss, the impedance parameter, the frequency band return loss and the return current.

10. The railway port freight yard dispatching signal cable path integrated management system according to claim 9, the system further comprises: Health analysis module; The health analysis module is used to establish a cable health data resource pool according to the fault location and fault cause on the railway cable, and define the intelligent body of various parameters of the railway cable; And build a health indicator data analysis model based on the data in the cable health data pool and various parameters in the historical intelligent body; The health analysis module is also used to obtain various parameters in the intelligent agent at the current moment, and input various parameters in the intelligent agent at the current moment into the health index data analysis model to obtain the confidence of the cable health index data corresponding to the intelligent agent; Compare the confidence of the cable health index data with a preset health threshold, and when the confidence of the cable health index data is greater than or equal to the preset health threshold, judge that the railway cable corresponding to the current intelligent agent is in a healthy state, and when the confidence of the cable health index data is less than the preset health threshold, judge that the railway cable corresponding to the current intelligent agent is in a fault state or is about to fail; The intelligent agent includes: a position or a node corresponding to the railway cable and various parameters of the cable corresponding to the position or the node.

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