A method and system for inspection based on line mileage information

Abstract

The application relates to a checking method based on line mileage information, which comprises the following steps: S1, identifying an input dispatching command text, judging whether the direction of a line described by the text is consistent in a line topological structure; S2, judging whether the start and end station intervals described by the text are consistent in sequence in the line topological structure; S3, judging whether the mileage value ranges of the start and end station intervals described by the text have intersections in the line topological structure; S4, checking whether the range expression of a start kilometer marker value and a start station is correct; and S5, checking whether the range expression of a termination kilometer marker value and a termination station is correct. The application establishes a relatively complete interval line data management system, which greatly improves the information accuracy of the content of a dispatching command, reduces operation mistakes such as dispatching command mistakes and omissions, and greatly improves the operation efficiency of train operation command.

Description

A method and system for checking based on line mileage information Technical Field

[0001] This invention relates to the field of rail transit, and more specifically to a method and system for inspection based on line mileage information. Background Technology

[0002] Dispatching commands, as crucial information in train operation control, are of paramount importance for ensuring railway transportation safety and maintaining normal transport order. Therefore, the accuracy of the information contained in dispatching command text is subject to extremely strict requirements. In railway signaling systems, dispatching commands are primarily drafted and distributed through dispatching command software within the Centralized Traffic Control (CTC) system. When dispatchers draft speed limit commands, they need to accurately grasp the location information of the speed limit section to ensure train operation safety. This speed limit section location information includes kilometer markers and station / section text descriptions, and the kilometer marker descriptions and station / section text descriptions must maintain consistent ranges.

[0003] Currently, the dispatching command software in centralized dispatching systems only has basic functions such as manually drafting dispatching commands and selecting receiving units. With increasingly complex and massive amounts of line data, precise speed limits for specific sections to minimize the impact on train operations are crucial for improving train organization and operational efficiency. Due to varying levels of training and individual learning among dispatchers, and their lack of operational proficiency, train dispatchers cannot accurately and quickly manually identify the kilometer markers and station / section information in speed limit location descriptions. This is especially problematic in high-intensity emergency situations, easily leading to oversights and errors. This also exposes the following shortcomings of the current system:

[0004] 1. The system does not include line mileage and station section information in the logical calculation scope, and there is no data source for command content verification.

[0005] 2. The dispatching command software cannot accurately extract kilometer marker values ​​and station section data from the command text edited by the dispatcher, nor can it convert them into detailed parameters that can be used for system logic calculation.

[0006] 3. The dispatching command software cannot automatically verify the corresponding station and section line information through the kilometer marker data, and therefore cannot make accurate warning prompts based on the verification results. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the existing technology by providing a method and system for checking line mileage information based on CTC speed-limited dispatch commands. This method consists of basic data configuration rule design, a method for identifying key text information of line mileage, and a method for verifying and checking line mileage information. The basic data configuration serves as the basis for verifying and checking line mileage information; flexible data configuration rules facilitate efficient and accurate data verification. The identification of key text information of line mileage is the foundation for checking the accuracy of dispatch command text information. A line mileage information verification method is designed based on the text-recognized line mileage information and the basic data of the integrated configuration rules, and then incorporated into the CTC dispatch command software system.

[0008] The present invention proposes a method for checking based on line mileage information, comprising the following steps:

[0009] S1. Identify the input dispatch command text. Based on the ascending and descending order of the kilometer markers in the dispatch command text, determine whether the direction of the described route is consistent in the route topology. If the direction is consistent, proceed to step S2; otherwise, output an error message.

[0010] S2. Determine whether the order of the starting and ending station sections described in the dispatching command text is consistent in the line topology. If the order is consistent, proceed to step S3; otherwise, output an error message.

[0011] S3. Based on the kilometer markers in the dispatch command text, determine whether there is an intersection between the mileage ranges of the starting and ending station sections described therein in the line topology. If there is an intersection, proceed to step S4; otherwise, output an error message.

[0012] S4. Verify whether the starting kilometer value and the range description of the starting station in the dispatch command text are correct. If the range description of the station is consistent with the range of the starting kilometer value in the line topology, the verification is correct. Proceed to step S5; otherwise, output an error message.

[0013] S5. Verify whether the description of the termination kilometer value and the range of the termination station in the dispatch command text is correct. If the description of the range of the termination station is consistent with the range of the termination kilometer value in the line topology, the check is successful; otherwise, an error message is output.

[0014] Furthermore, the recognition of the dispatch command text is achieved by matching it with the line name keyword configuration file, which contains the line number and line number.

[0015] Furthermore, the method for identifying line information in the scheduling command text is as follows: sequentially search the scheduling command text for content that is exactly the same as the line name and line number in the configuration file. If the search is successful, obtain the line number and line number of the corresponding line information based on the information in the configuration file.

[0016] Furthermore, the kilometer values ​​contained in the scheduling command text are identified based on the combined unit keywords in the scheduling command text.

[0017] Furthermore, based on the order in which the keywords of the combined unit appear in the text, the first value is extracted as the starting kilometer value, and the last value is extracted as the ending kilometer value.

[0018] Furthermore, identifying the scheduling command text involves the following steps:

[0019] S11. Obtain the scheduling command text;

[0020] S12. Retrieve combined unit keywords from the scheduling command text to obtain the start kilometer marker value and the end kilometer marker value;

[0021] S13. Using the location of the kilometer marker text extracted in S12 as a reference, retrieve the route name and route direction;

[0022] S14. Search for the station name before the kilometer marker text position;

[0023] S15. Based on the location of the station name obtained in S14, search for the keyword "(inclusive)" after the station name and determine whether it contains the corresponding station.

[0024] Furthermore, prior to step S1, a step of constructing a line topology structure is included, which is constructed based on line mileage information with stations as nodes.

[0025] Furthermore, prior to step S1, a step of establishing a line name keyword configuration file is also included.

[0026] Furthermore, the scheduling command instructions are input through the CTC system.

[0027] To implement the above-mentioned inspection method, this invention proposes an inspection system based on line mileage information, comprising: a line topology configuration file, a line name keyword configuration file, and a CTC dispatch command software terminal.

[0028] The CTC scheduling command software terminal is connected to the CTC system and is used to receive scheduling commands from the CTC system.

[0029] The route topology is obtained from the route topology configuration file, and the route name list is obtained from the route name keyword configuration file. Based on the route topology and the route name list, the correctness of the mileage content description in the dispatching command is checked step by step using sequential logic.

[0030] Furthermore, the configuration file for line name keywords includes: line number and line number; the line number corresponds one-to-one with the line name, and the line number corresponds to the line type.

[0031] Furthermore, based on the line type, a corresponding line number is assigned. The line types include "upbound", "upbound and downbound", and "downbound".

[0032] Furthermore, the line topology is a topology data structure based on line mileage information with stations as nodes.

[0033] Furthermore, the route mileage information includes: kilometer marker system, kilometer value, route name, line type information, and station information along the route.

[0034] Furthermore, the station information includes the exit number, entrance number, and the connection relationship between the station and the stations before and after it.

[0035] Furthermore, the line topology includes: station number, station name, number of exits, exit number, station number connected to the exit, station entrance number connected to the exit, line number of the line corresponding to the adjacent station connected to the exit, direction code, kilometer marker type code, center kilometer marker value of this station, and kilometer marker value corresponding to the exit.

[0036] As described above, the present invention has the following beneficial effects:

[0037] 1. By connecting discrete line data into a line topology network, a relatively complete section line data management system was established, which can be used for accurate calculations related to various line sections and provides a data foundation for checking the correctness of scheduling commands.

[0038] 2. Keyword matching rules were designed, which can be widely applied to text key information identification methods, avoiding the large model design, training and calculation process of natural language processing, and has the characteristics of simplicity and efficiency for the identification of industry-specific information.

[0039] 3. A rigorous sequential logic checking principle was designed to progressively verify the uncertain text data and obtain the final accurate result, resulting in a rapid response. Furthermore, the system using this method can effectively guide dispatchers in processing based on the verification results. This greatly improves the accuracy of dispatching command content, reduces operational errors such as incorrect or missed dispatching commands, provides an effective technical means for safety control before issuing speed limit and mileage-related commands, and significantly improves the operational efficiency of train operation command. Attached Figure Description

[0040] Figure 1 is a railway line topology diagram;

[0041] Figure 2 is a flowchart of the inspection method based on line mileage information;

[0042] Figure 3 is a flowchart of the route data extraction method using kilometer marker keywords;

[0043] Figure 4 is a structural diagram of the inspection system based on line mileage information. Detailed Implementation

[0044] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the inspection method and system based on line mileage information proposed in this invention.

[0045] As shown in Figure 1, in complex railway lines, each entrance and exit connects to the entrances and exits of the stations before and after it along the corresponding line, forming a section line network. In the example configuration shown in this invention, the line topology is established with the station as the node and the station entrance and exit as the smallest basic data unit. This configuration corresponds to the station number, station name, number of exits, exit number, station number connected to the exit, station entrance number connected to the exit, line number of the line corresponding to the adjacent station connected to the exit, direction code, kilometer marker type code, center kilometer marker value of this station, and kilometer marker value corresponding to the exit. By organizing the above configuration rules into searchable basic line structure data, the section range corresponding to the mileage information can be accurately retrieved.

[0046] To ensure the accurate execution of dispatching commands on complex railway lines, this invention proposes a method based on line mileage information for checking the accuracy of dispatching command content, as shown in Figure 2. The method mainly includes the following steps:

[0047] S1. Identify the input dispatch command text, which is input through the CTC system. Based on the ascending and descending order of the kilometer markers in the dispatch command text, determine whether the direction of the described line is consistent in the line topology. If the direction is consistent, proceed to step S2; otherwise, output an error message. The error message may be "The order of the kilometer markers is inconsistent with the direction of the line".

[0048] As shown in Figure 3, this example uses the dispatch command text "Speed ​​limit 60km / h between 45km2m and 48km5m on Line 1 from Station A (inclusive) to Station B" as an example, with "45km2m to 48km5m" in ascending order. The kilometer markers in the dispatch command text are identified based on the keyword combination of "km m". Following the order in which "km m" appears in the text, the first value is extracted as the starting kilometer marker, and the last value is extracted as the ending kilometer marker. The basis for determining the direction of a line in the line topology is the data configuration in the line topology. In this configuration, the data for the same line and row direction in each station are configured in order, which determines whether the kilometer markers for this line are in ascending or descending order. For example, in the configuration example, the configuration item "entry=1…line_id=1,run_dir=1,entry_pos=K10+211" precedes the configuration item "entry=2…line_id=1,run_dir=1,entry_pos=K15+123", which reflects the line direction. The kilometer marker order of the line "line_id=1,run_dir=1" is ascending (i.e., 10+0.211<15+0.123). When the system reads the above configuration, it organizes the ascending and descending order logic of the kilometer markers into program logic. When performing step S1, the identified line information can be used to determine whether the order of the start and end kilometer markers in the text is correct through the line topology.

[0049] S2. Determine whether the starting and ending station sections described in the dispatch command text are in the same order in the line topology. In this example, it refers to the section from station A to station B. If the order is consistent, proceed to step S3; otherwise, output an error message. The error message may be "The order of the kilometer markers is inconsistent with the direction of the station section".

[0050] S3. Based on the kilometer marker values ​​in the dispatch command text, determine whether there is an overlap in the mileage range of the starting and ending station sections described therein in the line topology. In this example, it refers to whether there is an overlap in the mileage range of "Station A to Station B" in the standard line topology. If there is an overlap, proceed to step S4; otherwise, output an error message. The error message may be "The kilometer marker range is completely inconsistent with the line mileage information".

[0051] S4. Verify the accuracy of the starting kilometer value and the range description of the starting station in the dispatch command text. If the station range description matches the range of the starting kilometer value in the line topology, the verification is correct, and proceed to step S5; otherwise, output an error message. The error message may be "The starting kilometer value and the starting station are inconsistent." In this example, first compare the starting kilometer value "45km2m" with the starting station description "Station A (inclusive)". Compare the data with the line topology to verify that the starting kilometer value is located outside the inner exit, inside the exit, in the middle of the outer exit, and outside the outer exit. Check the verification result against the station range description in the dispatch command text. If the station range description matches the range of the kilometer value in the line topology, proceed to step S5.

[0052] S5. Verify the accuracy of the description of the termination kilometer value and the termination station range in the dispatch command text. If the description of the termination station range is consistent with the range of the termination kilometer value in the line topology, this example verifies the accuracy of the description of the termination kilometer value "48km 5m" and the range of the termination station "Station B". If the verification is correct, the check passes; otherwise, an error message is output. The error message may be "The termination kilometer value is inconsistent with the starting station".

[0053] Furthermore, prior to step S1, a step of constructing the line topology is included. This line topology is built based on line mileage information, with stations as nodes. Complete line mileage information consists of a kilometer marker system, kilometer values, line name, line type information, and station information along the line. Station information includes exit / entry numbers and their connection relationships with preceding and following stations. This method establishes a line information network using stations as line nodes and exit / entry points as basic data units. Station nodes are represented by station numbers. A station contains several exit / entry points, each corresponding to a station number to which it connects, along with the exit / entry numbers of that connected station. The railway line connects these station numbers, and the connection status is reflected in the smallest basic data unit, the exit / entry data. Each exit / entry data point includes the station's central kilometer value data and the exit / entry kilometer value data corresponding to its line. The kilometer values, line name, kilometer marker system, and line type number constitute the basic data for determining accurate mileage. At this point, the node data of each station's entrances and exits, connecting to neighboring stations on the corresponding lines, are sequentially linked to form the overall railway network. Ultimately, a complete mileage information configuration rule is established using a single topological data structure, thereby accurately describing the precise location of the line sections.

[0054] Furthermore, to identify the dispatch command text, specifically the line name and line type within the dispatch command content, a line name keyword configuration file needs to be established after establishing the line topology structure, based on the aforementioned topology. The identification of the dispatch command text is achieved by matching it with the line name keyword configuration file, which contains a line number and a line type number, corresponding to the line name and line type, respectively. This keyword configuration file configures the basic expressions of all possible line names and line types that may appear in the dispatch command text, such as "Beijing-Shanghai Downline" and "Beijing-Shanghai Downline," and accordingly configures their line number and line type number. A complete configuration example is "line_name = Beijing-Shanghai Downline line_id = 1 dir = 2" and "line_name = Beijing-Shanghai Downline line_id = 1 dir = 2." In meaning, these two configurations convey the same information: the line name is "Beijing-Shanghai Line," the line type is "Downline," the line number is 1, and the line type number is 2. Based on this keyword configuration file, the method for identifying line information in the scheduling command text is as follows: sequentially search the scheduling command text for content that is exactly the same as the line name and line description of the configuration item. If the search is successful, the line number and line number of the corresponding line information can be obtained based on the information in the configuration item. These parameters can be used for logical calculations.

[0055] Furthermore, based on the aforementioned topology and line name keyword configuration file, the scheduling command can be identified by extracting keywords from the scheduling command text, as shown in Figure 3, which includes the following steps:

[0056] S11. Taking a segment of mileage information in a speed limit dispatch command as an example, such as "Speed ​​limit of 60km / h between 45km2m and 48km5m on Line 1 from Station A (inclusive) to Station B", enter the above command in the CTC system;

[0057] S12. Search for the keyword combination "km m" to extract "45km2m" as the starting kilometer value and "48km5m" as the ending kilometer value.

[0058] S13. Based on the position of the kilometer marker text extracted in S12, search forward for the expression "Line 1 Upward" to obtain the line name and line direction, which are "Line 1" and "Upward Direction" respectively, and map them to the corresponding line number "1" and line direction code "0".

[0059] S14. Search for the station name before the kilometer marker text position. The starting station can be determined as "Station A" and the ending station as "Station B" according to the position of the station name. Map them to the corresponding station numbers "1022" and "1023".

[0060] S15. Using the starting station name extracted in S14 as a reference, search for the keyword "(inclusive)" after the station name. This indicates that the starting mileage description is within station A. Similarly, the ending mileage description can be deduced to be outside station B. Following these steps, the dispatch command text content can be identified, and corresponding information including station number and line number can be obtained.

[0061] To implement the aforementioned inspection method based on line mileage information, this invention also proposes an inspection system based on line mileage information, as shown in Figure 4. The inspection system includes: a line topology configuration file, a line name keyword configuration file, and a CTC dispatch command software terminal. The CTC dispatch command software terminal is connected to the CTC system and is used to receive dispatch commands from the CTC system. The system obtains the line topology structure based on the line topology configuration file, obtains the line name list based on the line name keyword configuration file, and performs a step-by-step verification of the correctness of the mileage content description in the dispatch command using sequential logic checks based on the line topology structure and the line name list.

[0062] Furthermore, the line name keyword configuration file includes: line number and line number; the line number corresponds one-to-one with the line name, and the line number corresponds to the line type. A corresponding line number is assigned based on the line type, which includes "uplink", "uplink / downlink", and "downlink".

[0063] Furthermore, the line topology is a topology data structure based on line mileage information with stations as nodes.

[0064] Furthermore, the route mileage information includes: kilometer marker system, kilometer value, route name, line type information, and station information along the route.

[0065] Furthermore, the station information includes the exit number, entrance number, and the connection relationship between the station and the stations before and after it.

[0066] Furthermore, the line topology includes: station number, station name, number of exits, exit number, station number connected to the exit, station entrance number connected to the exit, line number of the line corresponding to the adjacent station connected to the exit, direction code, kilometer marker type code, center kilometer marker value of this station, and kilometer marker value corresponding to the exit.

[0067] This invention meets the needs of train dispatchers for verifying and controlling the line mileage information in speed-limit dispatch orders: It establishes railway line topology data configuration rules based on mileage information and applies them to the CTC dispatching and command system, improving basic data management and application methods; a keyword-based line information extraction method enables text information recognition in specialized fields, featuring low cost and minimal system overhead; the inspection system, combining text recognition and basic data verification rules, can understand the overall correctness of the text, automatically judge the correctness of line mileage and station / section information in speed-limit orders, and effectively guide dispatchers to verify and modify, effectively reducing the labor intensity and operational difficulty of manual identification; it improves the standardization of dispatch order text content and the accuracy of dispatch order information; and it provides rigorous technical means for safety control before the issuance of speed-limit dispatch orders, effectively ensuring the safe and orderly operation of dispatching and command work.

[0068] In summary, the present invention has the following beneficial effects:

[0069] 1. By connecting discrete line data into a line topology network, a relatively complete section line data management system was established, which can be used for accurate calculations related to various line sections and provides a data foundation for checking the correctness of scheduling commands.

[0070] 2. Keyword matching rules were designed, which can be widely applied to text key information identification methods, avoiding the large model design, training and calculation process of natural language processing, and has the characteristics of simplicity and efficiency for the identification of industry-specific information.

[0071] 3. A rigorous sequential logic checking principle was designed to progressively verify the uncertain text data and obtain the final accurate result, resulting in a rapid response. Furthermore, the system using this method can effectively guide dispatchers in processing based on the verification results. This greatly improves the accuracy of dispatching command content, reduces operational errors such as incorrect or missed dispatching commands, provides an effective technical means for safety control before issuing speed limit and mileage-related commands, and significantly improves the operational efficiency of train operation command.

[0072] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A method for checking based on line mileage information, characterized in that, The process includes the following steps: S1. Identify the input dispatch command text. Based on the ascending and descending order of the kilometer markers in the dispatch command text, determine whether the direction of the described route is consistent in the route topology. If the direction is consistent, proceed to step S2; otherwise, output an error message. S2. Determine whether the order of the starting and ending station sections described in the dispatching command text is consistent in the line topology. If the order is consistent, proceed to step S3; otherwise, output an error message. S3. Based on the kilometer markers in the dispatch command text, determine whether there is an intersection between the mileage ranges of the starting and ending station sections described therein in the line topology. If there is an intersection, proceed to step S4; otherwise, output an error message. S4. Verify whether the starting kilometer value and the range description of the starting station in the dispatch command text are correct. If the range description of the station is consistent with the range of the starting kilometer value in the line topology, the verification is correct. Proceed to step S5; otherwise, output an error message. S5. Verify whether the description of the termination kilometer value and the range of the termination station in the dispatch command text is correct. If the description of the range of the termination station is consistent with the range of the termination kilometer value in the line topology, the check is successful; otherwise, an error message is output.

2. The inspection method based on line mileage information as described in claim 1, characterized in that, The recognition of the dispatch command text is achieved by matching it with the line name keyword configuration file, which contains the line number and line number.

3. The inspection method based on line mileage information as described in claim 2, characterized in that, The method for identifying line information in the dispatch command text is as follows: search the dispatch command text for content that is exactly the same as the line name and line number in the configuration file. If the search is successful, obtain the line number and line number of the corresponding line information based on the information in the configuration file.

4. The inspection method based on line mileage information as described in claim 3, characterized in that, Identify the kilometer values ​​contained in the scheduling command text based on the combined unit keywords in the scheduling command text.

5. The inspection method based on line mileage information as described in claim 4, characterized in that, Based on the order in which the keywords of the combined unit appear in the text, the first value is extracted as the starting kilometer value, and the last value is extracted as the ending kilometer value.

6. The inspection method based on line mileage information as described in claim 2, characterized in that, The process of identifying dispatch command text includes the following steps: S11, obtaining the dispatch command text; S12, retrieving combined unit keywords from the dispatch command text to obtain the start and end kilometer values; S13, using the kilometer value text position extracted in S12 as a reference, retrieving the line name and line direction; S14, retrieving the station name before the kilometer value text position; S15, using the station name position obtained in S14 as a reference, retrieving the "(inclusive)" keyword after the station name to determine whether it contains the corresponding station.

7. The inspection method based on line mileage information as described in claim 1, characterized in that, Before step S1, there is also a step of constructing a line topology structure, which is constructed based on line mileage information with stations as nodes.

8. The inspection method based on line mileage information as described in claim 1, characterized in that, Before step S1, there is also a step of creating a line name keyword configuration file.

9. The inspection method based on line mileage information as described in claim 1, characterized in that, The scheduling command text is input through the CTC system.

10. A testing system based on route mileage information, used to implement the testing method according to any one of claims 1 to 9, characterized in that, It includes: a line topology configuration file, a line name keyword configuration file, and a CTC dispatch command software terminal; the CTC dispatch command software terminal is connected to the CTC system and is used to receive dispatch commands from the CTC system. The route topology is obtained from the route topology configuration file, and the route name list is obtained from the route name keyword configuration file. Based on the route topology and the route name list, the correctness of the mileage content description in the dispatching command is checked step by step using sequential logic.

11. The inspection system based on line mileage information as described in claim 10, characterized in that, The configuration file for line name keywords includes: line number and line number; the line number corresponds one-to-one with the line name, and the line number corresponds to the line type.

12. The inspection system based on line mileage information as described in claim 11, characterized in that, Assign a corresponding line number based on the line type. Line types include "uplink", "uplink and downlink" and "downlink".

13. The inspection system based on line mileage information as described in claim 11, characterized in that, The line topology is a topology data structure based on line mileage information with stations as nodes.

14. The inspection system based on line mileage information as described in claim 11, characterized in that, The route mileage information includes: kilometer marker system, kilometer value, route name, line type information, and station information along the route.

15. The inspection system based on line mileage information as described in claim 14, characterized in that, The station information includes the exit number, entrance number, and the connection relationship between the stations before and after it.

16. The inspection method based on line mileage information as described in claim 13, characterized in that, The line topology includes: station number, station name, number of exits, exit number, station number connected to the exit, station entrance number connected to the exit, line number of the line corresponding to the adjacent station connected to the exit, direction code, kilometer marker type code, center kilometer marker value of this station, and kilometer marker value corresponding to the exit.

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