A method and system for self-diagnosis of operation failure of a dedicated transformer acquisition terminal

Abstract

The present application provides a method and system for self-diagnosis of operation failure of a dedicated transformer acquisition terminal, which belongs to the field of fault processing technology. In the present application, the method includes: determining the current data transmission capacity of the data transmission link to be tested, adding different communication capability evaluation identifiers to the first self-test data packet to generate a second self-test data packet, sending the second self-test data packet to the first data transmission node, the first data transmission node parsing the second self-test data packet to obtain the communication capability evaluation identifier carried by the second self-test data packet, deleting the second self-test data packet when the communication capability evaluation identifier carried by the second self-test data packet is the third communication capability evaluation identifier, and extracting all the temporarily stored second self-test data packets in the data storage area, the first data transmission node determines the operation status of the data transmission link to be tested based on the temporarily stored second self-test data packet. The present application aims to improve the problems of low monitoring accuracy and poor timeliness in the existing scheme.

Description

Technical Field

[0001] The present application relates to the technical field of fault handling, and in particular to a method and system for self-diagnosis of operation faults of a dedicated transformer acquisition terminal. Background Art

[0002] The dedicated transformer acquisition terminal is a data acquisition device used to monitor and manage specific transformers in the power system. It mainly includes real-time monitoring functions for parameters such as voltage, current, power, and temperature. The acquisition terminal transmits these data to the monitoring center to achieve centralized management and intelligent analysis of substations. It improves the operating efficiency and safety of the power system. Through real-time data analysis, abnormal situations can be discovered in time to prevent failures.

[0003] At present, there are multiple data transmission links inside the dedicated transformer acquisition terminal. The failure of each link may involve different communication modules or transmission paths, and the fault location is difficult to locate quickly. In addition, the complexity of the link and possible environmental interference, equipment aging and other factors also increase the difficulty of troubleshooting, so that the abnormality of a single node may cause communication interruption or abnormality of the entire system. Summary of the invention

[0004] The embodiment of the present application provides a method and system for self-diagnosis of operation failure of a dedicated transformer acquisition terminal. The present application adopts the following technical solutions:

[0005] In a first aspect, a method for self-diagnosis of operation failure of a dedicated transformer acquisition terminal is provided, wherein the dedicated transformer acquisition terminal includes a data acquisition node and a data transmission node, wherein a plurality of data transmission links are provided in the data acquisition node and the data transmission node, and the method includes:

[0006] In the self-test period, a first self-test data packet sent by the data acquisition node is obtained, and a current data transmission capacity of the data transmission link to be tested is determined according to the first self-test data packet;

[0007] According to the current data transmission capability of the data transmission link to be tested, adding different communication capability evaluation identifiers to the first self-test data packet to generate a second self-test data packet, wherein the communication capability evaluation identifier includes a first communication capability evaluation identifier, a second communication capability evaluation identifier, and a third communication capability evaluation identifier;

[0008] Sending the second self-test data packet to the first data transmission node, and the first data transmission node parsing the second self-test data packet to obtain a communication capability evaluation identifier carried by the second self-test data packet;

[0009] In the case where the communication capability evaluation identifier carried by the second self-test data packet is the third communication capability evaluation identifier, deleting the second self-test data packet, and extracting all temporarily stored second self-test data packets in the data storage area;

[0010] The first data transmission node determines the operating status of the data transmission link to be tested according to the temporarily stored second self-test data packet.

[0011] In an embodiment of the present application, the data transmission capability includes at least one dimension of evaluation parameters, and determining the current data transmission capability of the data transmission link to be tested according to the first self-test data packet includes:

[0012] Determine the data transmission capacity impact score of each dimension according to the evaluation parameters of each dimension, wherein the evaluation parameters include at least one of the size of the first self-test data packet, the priority of the first self-test data packet, and the sending frequency of the first self-test data packet;

[0013] The current data transmission capacity of the data transmission link to be tested is determined according to the data transmission capacity impact score of each dimension and the weight coefficient corresponding to the dimension.

[0014] In an embodiment of the present application, adding a communication capability evaluation identifier to the first self-test data packet according to the data transmission capability includes:

[0015] When the data transmission capability is within the first threshold range, adding a first communication capability evaluation identifier to the first self-test data packet;

[0016] When the data transmission capability is within the second threshold range, adding a second communication capability evaluation identifier and test data to the first self-test data packet;

[0017] When the data transmission capacity is within the third threshold range, a third communication capacity evaluation identifier and standard data are added to the first self-test data packet, wherein the data transmission capacities corresponding to the first threshold range, the second threshold range, and the third threshold range decrease in sequence.

[0018] In an embodiment of the present application, sending a second self-test data packet to a first data transmission node includes:

[0019] If the communication capability evaluation identifier carried by the second self-test data packet is the first communication capability evaluation identifier and the second communication capability evaluation identifier, sending the second self-test data packet to the first data transmission node through the data transmission link to be tested;

[0020] If the communication capability evaluation identifier carried by the second self-test data packet is the third communication capability evaluation identifier, the second self-test data packet is simultaneously sent to the first data transmission node through the standby data transmission link and the data transmission link to be tested.

[0021] In an embodiment of the present application, after obtaining the communication capability evaluation identifier carried by the second self-test data packet, the method further includes:

[0022] When the communication capability evaluation identifier carried by the second self-test data packet is the first communication capability evaluation identifier, forwarding the second self-test data packet to the second data transmission node;

[0023] When the communication capability evaluation identifier carried by the second self-test data packet is the second communication capability evaluation identifier, the second self-test data packet is forwarded to the second data transmission node, and the second self-test data packet is stored in the data storage area as a temporarily stored second self-test data packet.

[0024] In an embodiment of the present application, the first data transmission node is deployed with a data comparison model, and the first data transmission node determines the operating state of the data transmission link to be tested according to the temporarily stored second self-test data packet, including:

[0025] Sorting the test data in all temporarily stored second self-test data packets according to the timestamp information in each temporarily stored second self-test data packet to obtain a test data sequence consisting of a plurality of test data;

[0026] Inputting the test data sequence into the data comparison model to obtain the data integrity of the test data in the test data sequence and the decreasing change rate of the data integrity;

[0027] If the data integrity of the test data is less than or equal to the first preset threshold, and the decreasing rate of change of the data integrity is greater than or equal to the second preset threshold, it is determined that the operating state of the data transmission link to be tested is an abnormal operating state;

[0028] If the data integrity of the test data is greater than or equal to the first preset threshold, or the decreasing rate of change of the data integrity is less than the second preset threshold, it is determined that the operating state of the data transmission link to be tested is a normal operating state.

[0029] In one embodiment of the present application, obtaining the data integrity and the decreasing rate of change of the data integrity of the test data in the test data sequence includes:

[0030] Performing feature extraction on each test data in the test data sequence to obtain a plurality of first vectors;

[0031] According to the comparison result of each first vector and the second feature corresponding to the standard data, the data integrity of each test data in the test data sequence is obtained;

[0032] According to the change of the data integrity of the test data corresponding to any adjacent timestamp information, the decreasing change rate of the data integrity of the test data in the test data sequence is determined.

[0033] In an embodiment of the present application, the method further includes:

[0034] If the operating state of the data transmission link to be tested is an abnormal operating state, the fault of the data transmission link to be tested is located, and the data transmission link to be tested is switched to a standby data transmission link.

[0035] In the second aspect, based on the same inventive concept, a self-diagnosis system for operation failure of a dedicated transformer acquisition terminal is provided, the system comprising:

[0036] An acquisition module, used to acquire a first self-test data packet sent by a data acquisition node during a self-test period, and determine a current data transmission capacity of a data transmission link to be tested according to the first self-test data packet;

[0037] An evaluation module, configured to add different communication capability evaluation identifiers to a first self-test data packet according to a current data transmission capability of a data transmission link to be tested, so as to generate a second self-test data packet, wherein the communication capability evaluation identifiers include a first communication capability evaluation identifier, a second communication capability evaluation identifier, and a third communication capability evaluation identifier;

[0038] A sending module, used to send the second self-test data packet to the first data transmission node, and the first data transmission node parses the second self-test data packet to obtain a communication capability evaluation identifier carried by the second self-test data packet;

[0039] The processing module deletes the second self-test data packet and extracts all temporarily stored second self-test data packets in the data storage area when the communication capability evaluation identifier carried by the second self-test data packet is the third communication capability evaluation identifier;

[0040] The diagnosis module is used for the first data transmission node to determine the operating status of the data transmission link to be tested according to the temporarily stored second self-test data packet.

[0041] In an embodiment of the present application, the data transmission capability includes at least one dimension of evaluation parameters, and the acquisition module includes:

[0042] An evaluation submodule, configured to determine the data transmission capacity impact score of each dimension according to the evaluation parameters of each dimension, wherein the evaluation parameters include at least one of the size of the first self-test data packet, the priority of the first self-test data packet, and the sending frequency of the first self-test data packet;

[0043] The calculation submodule is used to determine the current data transmission capacity of the data transmission link to be tested according to the data transmission capacity impact score of each dimension and the weight coefficient corresponding to the dimension.

[0044] In one embodiment of the present application, the evaluation module includes:

[0045] A first evaluation submodule, configured to add a first communication capability evaluation identifier to a first self-test data packet when the data transmission capability is within a first threshold range;

[0046] A second evaluation submodule, configured to add a second communication capability evaluation identifier and test data to the first self-test data packet when the data transmission capability is within a second threshold range;

[0047] The third evaluation submodule is used to add a third communication capability evaluation identifier and standard data to the first self-test data packet when the data transmission capability is within a third threshold range, wherein the data transmission capabilities corresponding to the first threshold range, the second threshold range, and the third threshold range decrease in sequence.

[0048] In one embodiment of the present application, the sending module includes:

[0049] A first sending submodule, configured to send the second self-test data packet to the first data transmission node through the data transmission link to be tested if the communication capability assessment identifier carried by the second self-test data packet is the first communication capability assessment identifier and the second communication capability assessment identifier;

[0050] The second sending submodule is configured to send the second self-test data packet to the first data transmission node through the standby data transmission link and the data transmission link to be tested simultaneously if the communication capability evaluation identifier carried by the second self-test data packet is the third communication capability evaluation identifier.

[0051] In an embodiment of the present application, after obtaining the communication capability evaluation identifier carried by the second self-test data packet, the method further includes:

[0052] When the communication capability evaluation identifier carried by the second self-test data packet is the first communication capability evaluation identifier, forwarding the second self-test data packet to the second data transmission node;

[0053] When the communication capability evaluation identifier carried by the second self-test data packet is the second communication capability evaluation identifier, the second self-test data packet is forwarded to the second data transmission node, and the second self-test data packet is stored in the data storage area as a temporarily stored second self-test data packet.

[0054] In one embodiment of the present application, the processing module includes:

[0055] A sorting submodule, used to sort the test data in all temporarily stored second self-test data packets according to the timestamp information in each temporarily stored second self-test data packet, so as to obtain a test data sequence consisting of a plurality of test data;

[0056] An input submodule, used for inputting the test data sequence into the data comparison model to obtain the data integrity of the test data in the test data sequence and the decreasing rate of change of the data integrity;

[0057] A first output submodule, configured to determine that the operating state of the data transmission link to be tested is an abnormal operating state if the data integrity of the test data is less than or equal to a first preset threshold value, and the decreasing rate of change of the data integrity is greater than or equal to a second preset threshold value;

[0058] The second output submodule is used to determine that the operating state of the data transmission link to be tested is a normal operating state if the data integrity of the test data is greater than or equal to the first preset threshold, or the decreasing rate of change of the data integrity is less than the second preset threshold.

[0059] In one embodiment of the present application, the input submodule includes:

[0060] A feature extraction unit, used for performing feature extraction on each test data in the test data sequence to obtain a plurality of first vectors;

[0061] A comparison unit, configured to obtain the data integrity of each test data in the test data sequence according to a comparison result between each first vector and the second feature corresponding to the standard data;

[0062] The determination unit is used to determine the decreasing change rate of the data integrity of the test data in the test data sequence according to the change of the data integrity of the test data corresponding to any adjacent timestamp information.

[0063] In summary, the above-mentioned dedicated transformer acquisition terminal operation fault self-diagnosis method and system have the following technical effects:

[0064] The self-diagnosis method for the operation failure of the special transformer acquisition terminal provided in the present application can monitor the communication status of each link in real time by automatically obtaining the first self-test data packet sent by the data acquisition node within the self-test cycle and evaluating the current data transmission capacity of each link. Compared with the traditional manual troubleshooting method, the automation mechanism reduces the need for human intervention and can more quickly identify the link that may have a fault. Different communication capability evaluation identifiers are added to the self-test data packet to accurately describe the communication performance status of each link. Through these identifiers, the system can clearly identify the operating status of the link, such as whether it is in normal operation, whether there is a minor fault or a serious fault, thereby providing clear fault classification information for operation and maintenance personnel. When the system detects that the link communication capacity is low, the self-test data packet on the faulty link is automatically deleted, and the temporarily stored self-test data packet is extracted from the data storage area. In this way, the system can not only isolate the faulty link to prevent it from interfering with the normal link, but also record and manage the self-test data packets generated during the fault process for subsequent analysis. By parsing the temporarily stored second self-test data packet through the first data transmission node, the system can evaluate the operating status of the link in real time, and judge whether there is an abnormality or fault in the current data transmission link based on this, which not only improves the accuracy of fault diagnosis, but also reduces the workload of operation and maintenance personnel.

[0065] In summary, the self-checking data packet and communication capability assessment identification, combined with the automatic isolation and management of link faults, greatly improves the efficiency of communication link fault diagnosis of the dedicated transformer acquisition terminal. Compared with the traditional manual troubleshooting method, this solution has significant advantages in improving fault detection accuracy and reducing diagnosis time. At the same time, it provides clear fault causes and link status information for operation and maintenance personnel, thereby optimizing the operation and maintenance process. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Figure 1 A schematic diagram of the steps of a method for self-diagnosis of operation failure of a dedicated transformer acquisition terminal provided in an embodiment of the present application;

[0067] Figure 2 A schematic diagram of the functional modules of a dedicated transformer acquisition terminal operation fault self-diagnosis system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0068] The terms used in the following embodiments are only for the purpose of describing specific embodiments, and are not intended to be used as limitations to the present application. As used in the specification and appended claims of the present application, the singular expressions "one", "a kind of", "", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context. It should also be understood that in the following embodiments of the present application, "at least one", "one or more" refer to one or more than two (including two). The character " / " generally indicates that the objects associated before and after are in a "or" relationship.

[0069] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0070] In the following, the terms "first", "second", etc. are used only for convenience of description and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more. For example, a plurality of processing units refers to two or more processing units.

[0071] In addition, in the embodiments of the present application, "upper", "lower", "left" and "right" are not limited to being defined relative to the orientation of the components schematically placed in the drawings. It should be understood that these directional terms can be relative concepts, which are used for description and clarification relative to the components, and can change accordingly according to the change in the orientation of the components placed in the drawings. In the drawings, for the sake of clarity, the thickness of the layers and regions is exaggerated, and the size ratio relationship between the parts in the drawings does not reflect the actual size ratio relationship.

[0072] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, the term "electrical connection" can be a direct electrical connection or an indirect electrical connection through an intermediate medium.

[0073] In the embodiments of the present application, the term "module" is generally a functional structure divided according to logic, and the "module" can be implemented by pure hardware, or by a combination of software and hardware. In the embodiments of the present application, "and / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, B exists alone, and A and B exist at the same time.

[0074] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0075] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0076] At present, dedicated transformer acquisition terminals usually have a redundant design, and multiple parallel links ensure that when one link fails, other links can continue to work. However, although such a design improves reliability, it also requires checking each link one by one during troubleshooting, which increases the workload of locating the fault point. Each link may use a different communication module or protocol (such as RS485, CAN, GPRS, etc.), and the failure manifestation and debugging method of each communication module are different. Therefore, when a link has a problem, specific debugging and testing are required for the specific communication module, which increases the complexity of diagnosis. In this complex multi-link design, the failure of a single node may cause communication abnormalities in the entire system. For example, if there is a problem with the intermediate node of a link, it may cause all downstream communications to be interrupted. Since the entire system is composed of multiple nodes and links, a single failure may trigger a chain reaction and affect the communication stability of the entire network. For operation and maintenance personnel, communication failures of dedicated transformer acquisition terminals are often result-oriented, and the specific cause of the failure needs to be determined by operation and maintenance personnel.

[0077] In order to solve the above problems, the invention concept of this application is proposed: the dedicated transformer acquisition terminal automatically obtains the first self-test data packet sent by the data acquisition node during the self-test cycle, and evaluates the current data transmission capacity of each link, so as to monitor the communication status of each link in real time. Compared with the traditional manual troubleshooting method, this automated mechanism reduces the need for human intervention and can more quickly identify links that may have faults.

[0078] Reference Figure 1 The embodiment of the present invention provides a method for self-diagnosis of operation failure of a dedicated transformer acquisition terminal, which may specifically include the following steps:

[0079] S101: within a self-test period, obtaining a first self-test data packet sent by a data acquisition node, and determining a current data transmission capability of a data transmission link to be tested according to the first self-test data packet.

[0080] In this embodiment, during the self-test cycle, the dedicated transformer acquisition terminal first obtains the first self-test data packet sent by the data acquisition node, which contains the basic status information of the current data acquisition node and the preliminary operation status of the data transmission link to which it is connected. By analyzing this self-test data packet, the system can evaluate the basic communication performance of the current link, such as signal strength, data packet loss rate, delay and other parameters. Based on this information, the system can determine the current data transmission capacity of the data transmission link to be tested. The specific steps for determining the current data transmission capacity of the data transmission link to be tested may include:

[0081] S1011: determining the data transmission capacity impact score of each dimension according to the evaluation parameter of each dimension, wherein the evaluation parameter includes at least one of the size of the first self-test data packet, the priority of the first self-test data packet, and the sending frequency of the first self-test data packet;

[0082] S1012: Determine the current data transmission capacity of the data transmission link to be tested according to the data transmission capacity impact score of each dimension and the weight coefficient corresponding to the dimension.

[0083] In the implementation methods of S1011 to S1012, the impact score of each dimension on the data transmission capacity is first determined based on the evaluation parameters of each dimension. These evaluation parameters include at least the following items: the size of the first self-test data packet, the priority of the first self-test data packet, and at least one of the sending frequency of the first self-test data packet. Specifically, the size of the first self-test data packet will affect the load of the data transmission link. The larger the packet, the higher the link bandwidth requirement may be, affecting the transmission capacity; the priority determines the transmission order of the self-test data packet on the link, and higher priority packets will be processed first, thereby reducing delays and improving transmission efficiency; the sending frequency indicates the transmission density of the data packet. A higher sending frequency will increase the pressure on the link in a short period of time, affecting the overall transmission performance. By analyzing these parameters, the specific impact of each dimension on the link data transmission capacity can be evaluated, and the corresponding impact score can be calculated.

[0084] After obtaining the impact score of each dimension, the transmission capacity of the current data transmission link to be tested is comprehensively evaluated in combination with the weight coefficient of each dimension. The weight coefficient represents the importance of each dimension in the overall data transmission capacity evaluation. Different links may have different sensitivities to certain dimensions, so the weight coefficient can be adjusted according to the actual situation of the link. By multiplying the impact score of each dimension with its weight coefficient and synthesizing the weighted results of all dimensions, the comprehensive data transmission capacity of the current data transmission link is finally determined. This process ensures the comprehensiveness and accuracy of the evaluation results, and can better reflect the actual transmission performance of the link in various situations.

[0085] S102: adding different communication capability evaluation identifiers to the first self-test data packet according to the current data transmission capability of the data transmission link to be tested, so as to generate a second self-test data packet.

[0086] In this embodiment, after determining the current data transmission capacity of the data transmission link to be tested, the system will assign different communication capacity evaluation identifiers to the first self-test data packet based on preset standards and rules. The key to this process is to first conduct a comprehensive evaluation of the performance of the link, identify key parameters such as transmission speed, delay, stability, etc. of the link in actual operation, and then determine its overall data transmission capacity.

[0087] Subsequently, the system conducts a comprehensive analysis of the performance of each dimension based on pre-set standards and rules to clarify the current state of the link. In this way, the system can effectively assign specific communication capability evaluation identifiers to each first self-test data packet. These identifiers represent different levels and states of link performance. The specific steps for generating the second self-test data packet include:

[0088] S1021: When the data transmission capability is within a first threshold range, adding a first communication capability evaluation identifier to a first self-test data packet;

[0089] S1022: When the data transmission capability is within the second threshold range, add a second communication capability evaluation identifier and test data to the first self-test data packet;

[0090] S1023: When the data transmission capacity is within the third threshold range, add a third communication capacity evaluation identifier and standard data to the first self-test data packet, wherein the data transmission capacities corresponding to the first threshold range, the second threshold range, and the third threshold range decrease in sequence.

[0091] In the implementation of S1021 to S1023, when the current data transmission capacity of the data transmission link to be tested is within the first threshold range, the first communication capability evaluation mark will be added to the first self-test data packet. This means that the link shows good data transmission capacity within this range and can efficiently and stably handle data transmission requirements. By attaching the first communication capability evaluation mark to the first self-test data packet, the system clearly indicates that the link can support normal communication operations and is suitable for continued use under current conditions to ensure timely transmission and processing of data. When the data transmission capacity is within the second threshold range, the system will add the second communication capability evaluation mark to the first self-test data packet and attach test data at the same time. This operation indicates that the performance of the link has declined to a certain extent. Although data transmission can still be performed, there may be a risk of delay or data loss. By attaching test data to the data packet, the system will further monitor the performance of the link in actual applications, helping operation and maintenance personnel to evaluate the availability and potential risks of the link in the current state, so as to take appropriate measures to ensure communication quality. In the case where the data transmission capacity to be tested falls within the third threshold range, the system will add the third communication capability evaluation mark to the first self-test data packet and include standard data. This indicates that the performance of the link is significantly lower than expected and the transmission capacity is insufficient, which may cause communication interruption or severe delays. The additional standard data will be used for reference and comparison to help operation and maintenance personnel quickly identify and solve link problems. At this time, the system not only indicates the inefficient state of the link through the third communication capability evaluation identifier, but also provides the necessary benchmark data for subsequent troubleshooting and performance optimization. It should be pointed out that the data transmission capacity corresponding to the first threshold range, the second threshold range and the third threshold range decreases successively.

[0092] S103: Send the second self-test data packet to the first data transmission node, and the first data transmission node parses the second self-test data packet to obtain a communication capability evaluation identifier carried by the second self-test data packet.

[0093] In this embodiment, the process of sending the second self-test data packet to the first data transmission node is intended to pass the evaluation result to the downstream processing unit of the link. Specifically, the system first sends the generated second self-test data packet to the first data transmission node through the network or communication channel. In this process, the data packet will carry the communication capability evaluation identifier mentioned above, as well as related test data and standard data. When the second self-test data packet arrives at the first data transmission node, the node will start the parsing operation and perform a detailed analysis on the received data packet. The parsing process mainly includes parsing the data packet header and the payload to extract the communication capability evaluation identifier carried. This evaluation identifier may be the first, second or third communication capability evaluation identifier, corresponding to different link performance states. Through this parsing process, the first data transmission node can obtain the current performance status of the link, and then monitor and judge the data transmission capability in real time. The parsing results will be used for subsequent decision-making, such as determining whether to continue to use the link for data transmission, or whether maintenance and adjustment are required. At the same time, this process provides important information support for operation and maintenance personnel, enabling them to quickly respond to possible network failures or performance degradation problems based on the communication capability evaluation identifier, thereby effectively maintaining the stability and reliability of the communication system.

[0094] Sending the second self-test data packet to the first data transmission node specifically includes:

[0095] S1031: If the communication capability evaluation identifier carried by the second self-test data packet is the first communication capability evaluation identifier and the second communication capability evaluation identifier, sending the second self-test data packet to the first data transmission node through the data transmission link to be tested;

[0096] S1032: If the communication capability evaluation identifier carried by the second self-test data packet is the third communication capability evaluation identifier, the second self-test data packet is simultaneously sent to the first data transmission node through the standby data transmission link and the data transmission link to be tested.

[0097] In the implementation of S1031 to S1032, if the communication capability evaluation identifier carried by the second self-test data packet is the first communication capability evaluation identifier and the second communication capability evaluation identifier, the system will send the second self-test data packet to the first data transmission node through the data transmission link to be tested. This indicates that the performance of the link is still in a good or acceptable state and can effectively handle the data transmission task. In this case, the system will use the existing main data transmission link to transmit data normally to ensure the efficiency and stability of communication.

[0098] On the other hand, if the communication capability assessment identifier carried by the second self-test data packet is the third communication capability assessment identifier, it means that the performance of the link has been significantly reduced and may not be able to meet normal data transmission requirements. To deal with this situation, the system will adopt a backup strategy: that is, the second self-test data packet is sent to the first data transmission node through the backup data transmission link and the data transmission link to be tested at the same time. This dual-link transmission method is designed to ensure that the data can reach the destination smoothly. Even if there are potential problems with the data transmission link to be tested, the backup link can still provide support, reducing the risk of communication interruption or delay caused by link failure.

[0099] After obtaining the communication capability evaluation identifier carried by the second self-test data packet, the method further includes:

[0100] When the communication capability evaluation identifier carried by the second self-test data packet is the first communication capability evaluation identifier, forwarding the second self-test data packet to the second data transmission node;

[0101] When the communication capability evaluation identifier carried by the second self-test data packet is the second communication capability evaluation identifier, the second self-test data packet is forwarded to the second data transmission node, and the second self-test data packet is stored in the data storage area as a temporarily stored second self-test data packet.

[0102] In this embodiment, when the communication capability assessment mark carried by the second self-test data packet is the first communication capability assessment mark, the system will forward the second self-test data packet to the second data transmission node. This indicates that the current performance of the link is good and can smoothly support the transmission of data. In this case, the data will continue to flow to the destination through the first path, ensuring the rapid transmission of information, while also allowing the system to continue to monitor and evaluate the stability of the link. Secondly, when the communication capability assessment mark carried by the second self-test data packet is the second communication capability assessment mark, the system will not only forward the second self-test data packet to the second data transmission node, but also store it in the data storage area as a temporary second self-test data packet. This means that although the link performance is still acceptable, a slight performance degradation has occurred, and further monitoring and evaluation may be required. In this case, the stored second self-test data packet will provide a basis for subsequent analysis, and the operation and maintenance personnel can use these data packets to understand the performance of the link in different states, so as to promptly discover potential problems.

[0103] Through these two processing methods, the system realizes dynamic management of data transmission and real-time monitoring of link status, which not only ensures fast data forwarding when link performance is good, but also collects necessary data when link performance is slightly degraded, helping operation and maintenance personnel to conduct subsequent analysis and troubleshooting. This flexible processing strategy effectively improves the stability and reliability of the communication link and provides a guarantee for the long-term operation of the system.

[0104] S104: When the communication capability evaluation identifier carried by the second self-test data packet is the third communication capability evaluation identifier, the second self-test data packet is deleted, and all temporarily stored second self-test data packets in the data storage area are extracted.

[0105] In this embodiment, when the communication capability evaluation mark carried by the second self-test data packet is the third communication capability evaluation mark, the system will actively delete the second self-test data packet to prevent it from continuing to be transmitted in the link, so as to avoid negative impact on subsequent data transmission due to its inefficient performance. This ensures that the system can respond quickly to link performance problems and reduce potential communication risks. Next, the system extracts all the temporarily stored second self-test data packets from the data storage area. These temporarily stored data packets were saved in the previous operation and may contain the results generated by self-testing the link to be tested at different time points. The purpose of extracting these data packets is to conduct a comprehensive analysis. The operation and maintenance personnel can use the information in these data packets to evaluate and compare the historical performance of the link, so as to better understand the reasons for the current link status. This process not only helps to deal with the current link problem immediately, but also provides important data support for subsequent fault diagnosis and performance optimization. Through the analysis of the temporarily stored data packets, the system can identify the performance of the link under different conditions, thereby providing a basis for formulating more effective maintenance strategies and optimization measures. In addition, this can also help the operation and maintenance personnel locate the root cause of the fault more quickly and ensure the overall stability and reliability of the communication system.

[0106] S105: The first data transmission node determines the operating status of the data transmission link to be tested according to the temporarily stored second self-test data packet.

[0107] In this implementation manner, the first data transmission node determines the operating state of the data transmission link to be tested according to the temporarily stored second self-test data packet, and the specific steps include:

[0108] S1051: sorting the test data in all temporarily stored second self-test data packets according to the timestamp information in each temporarily stored second self-test data packet to obtain a test data sequence consisting of a plurality of test data;

[0109] S1052: Input the test data sequence into the data comparison model to obtain the data integrity of the test data in the test data sequence and the decreasing change rate of the data integrity;

[0110] S1053: If the data integrity of the test data is less than or equal to the first preset threshold, and the decreasing rate of change of the data integrity is greater than or equal to the second preset threshold, determining that the operating state of the data transmission link to be tested is an abnormal operating state;

[0111] S1054: If the data integrity of the test data is greater than or equal to the first preset threshold, or the decreasing rate of the data integrity is less than the second preset threshold, it is determined that the operating state of the data transmission link to be tested is a normal operating state.

[0112] In the implementation of S1051 to S1054, according to the timestamp information in each temporarily stored second self-test data packet, the system will sort all the test data to generate a test data sequence consisting of multiple test data. The timestamp information can ensure that the data packets are arranged in the order of time of sending or receiving, which is crucial for subsequent analysis. Through this sorting, the system can better observe the changing trends and abnormalities in the data transmission process, providing a basis for further analysis. The obtained test data sequence is input into the data comparison model to evaluate the integrity of the test data and the decreasing rate of change of the data integrity. The data comparison model can identify the integrity problems in the data transmission by analyzing the input data sequence, and calculate the changes of the data during the transmission process. This step is an important test of data quality to ensure that the subsequent state judgment can be based on accurate and reliable information. If the evaluation result of the integrity of the test data is less than or equal to the first preset threshold, and the decreasing rate of change of the data integrity is greater than or equal to the second preset threshold, the system will determine that the operating state of the data transmission link to be tested is an abnormal operating state. This indicates that the performance of the link has been significantly reduced, and there are serious problems in the data transmission process, which may cause data loss or transmission delay. Through this judgment, the operation and maintenance personnel can take timely measures to troubleshoot and repair the fault to prevent a greater impact on the overall communication system. On the contrary, if the integrity evaluation result of the test data is greater than or equal to the first preset threshold, or the data integrity decreasing rate of change is less than the second preset threshold, the system will determine that the operating status of the data transmission link to be tested is a normal operating state. This indicates that the link performs well during the data transmission process and can effectively support communication needs. At this point, the operation and maintenance personnel can continue to monitor the performance of the link to ensure its stable operation and perform routine maintenance when necessary.

[0113] Through these steps, the system can accurately judge the operating status of the data transmission link to be tested, so that the health status of the link can be fed back in time, thus providing data support for optimizing operation and management decisions. This data analysis-based method not only improves the accuracy of link performance monitoring, but also enhances the overall reliability of the communication system.

[0114] In a feasible implementation manner, obtaining the data integrity and the decreasing rate of change of the data integrity of the test data in the test data sequence includes:

[0115] Performing feature extraction on each test data in the test data sequence to obtain a plurality of first vectors;

[0116] According to the comparison result of each first vector and the second feature corresponding to the standard data, the data integrity of each test data in the test data sequence is obtained;

[0117] According to the change of the data integrity of the test data corresponding to any adjacent timestamp information, the decreasing change rate of the data integrity of the test data in the test data sequence is determined.

[0118] In this embodiment, by applying a feature extraction algorithm, the system will extract several key features from each test data, and these features will be represented as multiple first vectors. These first vectors contain basic information and features of the test data, and can provide necessary input for subsequent data analysis.

[0119] Next, the data integrity is evaluated by comparing each first vector with the second feature corresponding to the standard data. The standard data is a verified and approved reference data that provides a benchmark for the integrity of the test data. During this comparison, the system evaluates the degree of difference between the first vector and the standard data, thereby calculating the integrity value of the test data. The integrity value can directly reflect the quality of the test data and its reliability during transmission.

[0120] Finally, the calculation of the rate of change of data integrity decrease is completed by analyzing the changes in the data integrity of the test data corresponding to any adjacent timestamp information. The system will compare the integrity values ​​corresponding to the timestamps to identify the trend of data integrity changes over time. By calculating the ratio of these changes, the system can accurately evaluate whether the data has a tendency to decay or decline during the transmission process.

[0121] In summary, through the comprehensive method of feature extraction, integrity evaluation and change rate calculation, the system can effectively obtain the data integrity and data integrity decreasing change rate of each test data in the test data sequence. This series of operations not only improves the accuracy of data quality monitoring, but also provides a solid foundation for further fault diagnosis and performance optimization. Based on these evaluation results, operation and maintenance personnel can timely adjust and optimize the operation strategy of the link to ensure the efficiency and stability of the communication system.

[0122] In a feasible implementation, the method further includes:

[0123] If the operating state of the data transmission link to be tested is an abnormal operating state, the fault of the data transmission link to be tested is located, and the data transmission link to be tested is switched to a standby data transmission link.

[0124] In this embodiment, the data transmission link to be tested is firstly fault located. This process involves using a pre-set fault diagnosis algorithm or tool to analyze the operating data, historical records and current status of the link to determine the specific cause of the abnormality. This may include monitoring and analysis of key indicators such as signal strength, transmission delay, and data loss rate of each node. The goal of fault location is to accurately identify the root cause of the fault, whether it is a hardware failure, a software problem, or poor communication due to external interference. Once the fault is accurately located, the system will take necessary measures to switch the data transmission link to be tested to a backup data transmission link. This switching process is to ensure uninterrupted data transmission and continuous operation of the system. The backup data transmission link is usually a pre-configured redundant link that can be quickly enabled when the main link fails to maintain the stability of communication. The system will automatically adjust the data flow direction and re-establish the connection through the backup link to avoid data loss or service interruption caused by the failure of the main link.

[0125] In the second aspect, based on the same inventive concept, refer to Figure 2 , shows a self-diagnosis system 200 for operation failure of a dedicated transformer acquisition terminal provided by an embodiment of the present application, the system comprising:

[0126] The acquisition module 201 is used to acquire a first self-test data packet sent by a data acquisition node within a self-test period, and determine a current data transmission capacity of a data transmission link to be tested according to the first self-test data packet;

[0127] An evaluation module 202 is used to add different communication capability evaluation identifiers to the first self-test data packet according to the current data transmission capability of the data transmission link to be tested, so as to generate a second self-test data packet, wherein the communication capability evaluation identifier includes a first communication capability evaluation identifier, a second communication capability evaluation identifier and a third communication capability evaluation identifier;

[0128] The sending module 203 is used to send the second self-test data packet to the first data transmission node, and the first data transmission node parses the second self-test data packet to obtain the communication capability evaluation identifier carried by the second self-test data packet;

[0129] The processing module 204 deletes the second self-test data packet and extracts all temporarily stored second self-test data packets in the data storage area when the communication capability evaluation identifier carried by the second self-test data packet is the third communication capability evaluation identifier;

[0130] The diagnosis module 205 is used for the first data transmission node to determine the operating status of the data transmission link to be tested according to the temporarily stored second self-test data packet.

[0131] In an embodiment of the present application, the data transmission capability includes at least one dimension of evaluation parameters, and the acquisition module includes:

[0132] An evaluation submodule, configured to determine the data transmission capacity impact score of each dimension according to the evaluation parameters of each dimension, wherein the evaluation parameters include at least one of the size of the first self-test data packet, the priority of the first self-test data packet, and the sending frequency of the first self-test data packet;

[0133] The calculation submodule is used to determine the current data transmission capacity of the data transmission link to be tested according to the data transmission capacity impact score of each dimension and the weight coefficient corresponding to the dimension.

[0134] In one embodiment of the present application, the evaluation module includes:

[0135] A first evaluation submodule, configured to add a first communication capability evaluation identifier to a first self-test data packet when the data transmission capability is within a first threshold range;

[0136] A second evaluation submodule, configured to add a second communication capability evaluation identifier and test data to the first self-test data packet when the data transmission capability is within a second threshold range;

[0137] The third evaluation submodule is used to add a third communication capability evaluation identifier and standard data to the first self-test data packet when the data transmission capability is within a third threshold range, wherein the data transmission capabilities corresponding to the first threshold range, the second threshold range, and the third threshold range decrease in sequence.

[0138] In one embodiment of the present application, the sending module includes:

[0139] A first sending submodule, configured to send the second self-test data packet to the first data transmission node through the data transmission link to be tested if the communication capability assessment identifier carried by the second self-test data packet is the first communication capability assessment identifier and the second communication capability assessment identifier;

[0140] The second sending submodule is configured to send the second self-test data packet to the first data transmission node through the standby data transmission link and the data transmission link to be tested simultaneously if the communication capability evaluation identifier carried by the second self-test data packet is the third communication capability evaluation identifier.

[0141] In an embodiment of the present application, after obtaining the communication capability evaluation identifier carried by the second self-test data packet, the method further includes:

[0142] When the communication capability evaluation identifier carried by the second self-test data packet is the first communication capability evaluation identifier, forwarding the second self-test data packet to the second data transmission node;

[0143] When the communication capability evaluation identifier carried by the second self-test data packet is the second communication capability evaluation identifier, the second self-test data packet is forwarded to the second data transmission node, and the second self-test data packet is stored in the data storage area as a temporarily stored second self-test data packet.

[0144] In one embodiment of the present application, the processing module includes:

[0145] A sorting submodule, used to sort the test data in all temporarily stored second self-test data packets according to the timestamp information in each temporarily stored second self-test data packet, so as to obtain a test data sequence consisting of a plurality of test data;

[0146] An input submodule, used for inputting the test data sequence into the data comparison model to obtain the data integrity of the test data in the test data sequence and the decreasing rate of change of the data integrity;

[0147] A first output submodule, configured to determine that the operating state of the data transmission link to be tested is an abnormal operating state if the data integrity of the test data is less than or equal to a first preset threshold value, and the decreasing rate of change of the data integrity is greater than or equal to a second preset threshold value;

[0148] The second output submodule is used to determine that the operating state of the data transmission link to be tested is a normal operating state if the data integrity of the test data is greater than or equal to the first preset threshold, or the decreasing rate of change of the data integrity is less than the second preset threshold.

[0149] In one embodiment of the present application, the input submodule includes:

[0150] A feature extraction unit, used for performing feature extraction on each test data in the test data sequence to obtain a plurality of first vectors;

[0151] A comparison unit, configured to obtain the data integrity of each test data in the test data sequence according to a comparison result between each first vector and the second feature corresponding to the standard data;

[0152] The determination unit is used to determine the decreasing change rate of the data integrity of the test data in the test data sequence according to the change of the data integrity of the test data corresponding to any adjacent timestamp information.

[0153] It should be noted that the specific implementation of the dedicated transformer acquisition terminal operation fault self-diagnosis system 200 of the embodiment of the present application refers to the specific implementation of the dedicated transformer acquisition terminal operation fault self-diagnosis method proposed in the first aspect of the aforementioned embodiment of the present application, and will not be repeated here.

[0154] The above embodiments can be implemented in whole or in part by software, hardware (such as circuits), firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When a computer instruction or computer program is loaded or executed on a computer, a process or function according to an embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable system. The computer program or instruction can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program or instruction can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a tape), an optical medium (for example, a DVD) or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0155] It should be understood that the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship, but it may also indicate an "and / or" relationship. Please refer to the context for specific understanding.

[0156] In this application, "at least one" means one or more, and "plurality" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0157] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0158] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0159] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described systems, systems and units can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0160] In the several embodiments provided in the present application, it should be understood that the disclosed systems, systems and methods can be implemented in other ways. For example, the system embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the system or unit can be electrical, mechanical or other forms.

[0161] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0162] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0163] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

[0164] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for self-diagnosis of operation failure of a dedicated transformer acquisition terminal, characterized in that: The dedicated variable acquisition terminal includes a data acquisition node and a data transmission node, and multiple data transmission links are arranged between the data acquisition node and the data transmission node. The method includes: In a self-test cycle, obtaining a first self-test data packet sent by the data acquisition node, and determining a current data transmission capacity of the data transmission link to be tested according to the first self-test data packet; According to the current data transmission capability of the data transmission link to be tested, adding different communication capability evaluation identifiers to the first self-test data packet to generate a second self-test data packet, wherein the communication capability evaluation identifier includes a first communication capability evaluation identifier, a second communication capability evaluation identifier, and a third communication capability evaluation identifier; Sending the second self-test data packet to the first data transmission node, and the first data transmission node parsing the second self-test data packet to obtain a communication capability evaluation identifier carried by the second self-test data packet; In the case where the communication capability evaluation identifier carried by the second self-test data packet is the third communication capability evaluation identifier, deleting the second self-test data packet, and extracting all temporarily stored second self-test data packets in the data storage area; The first data transmission node determines the operating state of the data transmission link to be tested according to the temporarily stored second self-test data packet; The adding a communication capability evaluation identifier to the first self-test data packet according to the data transmission capability includes: When the data transmission capability is within a first threshold range, adding a first communication capability evaluation identifier to the first self-test data packet; When the data transmission capability is within a second threshold range, adding a second communication capability evaluation identifier and test data to the first self-test data packet; When the data transmission capacity is within the third threshold range, adding a third communication capacity evaluation identifier and standard data to the first self-test data packet, wherein the data transmission capacities corresponding to the first threshold range, the second threshold range, and the third threshold range decrease in sequence; The sending the second self-test data packet to the first data transmission node includes: If the communication capability assessment identifier carried by the second self-test data packet is the first communication capability assessment identifier and the second communication capability assessment identifier, sending the second self-test data packet to the first data transmission node through the data transmission link to be tested; If the communication capability evaluation identifier carried by the second self-test data packet is the third communication capability evaluation identifier, sending the second self-test data packet to the first data transmission node simultaneously through the standby data transmission link and the data transmission link to be tested; After obtaining the communication capability evaluation identifier carried by the second self-test data packet, the method further includes: When the communication capability evaluation identifier carried by the second self-test data packet is the first communication capability evaluation identifier, forwarding the second self-test data packet to a second data transmission node; In a case where the communication capability evaluation identifier carried by the second self-test data packet is the second communication capability evaluation identifier, forwarding the second self-test data packet to the second data transmission node, and storing the second self-test data packet as the temporarily stored second self-test data packet in the data storage area; The first data transmission node is deployed with a data comparison model, and the first data transmission node determines the operating state of the data transmission link to be tested according to the temporarily stored second self-test data packet, including: Sorting the test data in all the temporarily stored second self-test data packets according to the timestamp information in each of the temporarily stored second self-test data packets to obtain a test data sequence consisting of a plurality of the test data; Inputting the test data sequence into the data comparison model to obtain the data integrity and the decreasing rate of change of the data integrity of the test data in the test data sequence; If the data integrity of the test data is less than a first preset threshold, and the decreasing rate of change of the data integrity is greater than or equal to a second preset threshold, it is determined that the operating state of the data transmission link to be tested is an abnormal operating state; If the data integrity of the test data is greater than the first preset threshold, or the decreasing rate of change of the data integrity is less than the second preset threshold, it is determined that the operating state of the data transmission link to be tested is a normal operating state.

2. The method for self-diagnosis of operation failure of a dedicated transformer acquisition terminal according to claim 1 is characterized in that: The obtaining of the data integrity and the decreasing rate of change of the data integrity of the test data in the test data sequence comprises: Performing feature extraction on each of the test data in the test data sequence to obtain a plurality of first vectors; According to the comparison result of each first vector and the second feature corresponding to the standard data, the data integrity of each test data in the test data sequence is obtained; The decreasing rate of change of the data integrity of the test data in the test data sequence is determined according to the change of the data integrity of the test data corresponding to any adjacent timestamp information.

3. The method for self-diagnosis of operation failure of a dedicated transformer acquisition terminal according to claim 1 is characterized in that: The method further comprises: If the operating state of the data transmission link to be tested is an abnormal operating state, a fault is located on the data transmission link to be tested, and the data transmission link to be tested is switched to a standby data transmission link.

4. A self-diagnosis system for operation failure of a dedicated transformer acquisition terminal, characterized in that: The method for self-diagnosis of operation failure of a dedicated transformer acquisition terminal according to any one of claims 1 to 3 is applied, wherein the dedicated transformer acquisition terminal comprises a data acquisition node and a data transmission node, and a plurality of data transmission links are arranged between the data acquisition node and the data transmission node, and the system comprises: An acquisition module, used to acquire a first self-test data packet sent by the data acquisition node within a self-test period, and determine a current data transmission capacity of the data transmission link to be tested according to the first self-test data packet; An evaluation module, configured to add different communication capability evaluation identifiers to the first self-test data packet according to the current data transmission capability of the data transmission link to be tested, so as to generate a second self-test data packet, wherein the communication capability evaluation identifier includes a first communication capability evaluation identifier, a second communication capability evaluation identifier, and a third communication capability evaluation identifier; A sending module, configured to send the second self-test data packet to a first data transmission node, and the first data transmission node parses the second self-test data packet to obtain a communication capability evaluation identifier carried by the second self-test data packet; a processing module, which, when the communication capability evaluation identifier carried by the second self-test data packet is the third communication capability evaluation identifier, deletes the second self-test data packet and extracts all temporarily stored second self-test data packets in the data storage area; The diagnosis module is used for the first data transmission node to determine the operating status of the data transmission link to be tested according to the temporarily stored second self-test data packet.

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