Search method and system for positioning a turnout unreachable by a first section of an outer signal

Abstract

This invention discloses a search method and system for locating unreachable turnouts in the first section outside a signal. The method includes: acquiring all signaling equipment within a designated station, the signaling equipment including at least signals, sections, and turnouts; for each signal, acquiring the signal direction, and searching in the opposite direction of the signal direction from the signal to determine the first section outside the signal corresponding to the signal; for each signal, starting from the signal and using the opposite direction of the signal direction as the initial search direction, sequentially searching and judging each signaling device in the first section outside the signal corresponding to the signal; wherein, when the searched signaling device is a turnout, the current search direction is the convergence direction of the turnout, and the previous signaling device is connected to the opposite branch of the turnout, the turnout is determined to be an unreachable turnout in the first section outside the signal and recorded.

Description

Technical Field

[0001] This invention relates to the field of track signaling equipment technology, and in particular to a method and system for locating unreachable turnouts in the first section outside the signal. Background Technology

[0002] Automatic testing of interlocking rules refers to verifying whether the starting signal of the route can be closed normally and whether the route can be unlocked normally by simulating automatic train operation after the corresponding route is processed according to the interlocking table. Before simulating automatic train operation, it is necessary to determine whether the section can be normally occupied based on the position of the turnout in the first section outside the starting signal of the route, so as to form normal cross pressure and generate the closing condition of the starting signal.

[0003] For turnouts within the first section outside the signal where the reverse position leads to the starting signal of the route, but the normal position does not lead to the starting signal, they need to be switched to the reverse position during automatic testing. Therefore, it is necessary to identify in advance all turnouts within the first section outside the signal that are normally not accessible to the signal but are accessible in the reverse position, i.e., turnouts that are not accessible in the first section outside the signal.

[0004] However, currently in the interlocking information table, the unreachable turnouts in the first section outside the signal need to be manually configured by the signal designer. This method has the following problems:

[0005] (1) Manual configuration is inefficient. Especially for large stations with a large number of signals, there may be hundreds of signals in the station. Manually filling in the location of unreachable switches in the first section of the outer side of all signals in the station is tedious and burdensome, resulting in low configuration efficiency.

[0006] (2) Manual configuration is difficult to guarantee accuracy. In particular, there may be multiple sets of turnouts in some sections, including single-action turnouts and double-action turnouts. It is necessary to manually confirm whether each turnout is unreachable before filling in the turnout name, which is prone to errors or omissions.

[0007] (3) It restricts the automation level of interlocking data design and makes it difficult to meet safety requirements. Interlocking data has high safety requirements, and reducing manual data configuration is crucial. Improving the automation level of data design is the current goal and trend of interlocking data production. Manually filling in the configuration of all signals in the station to locate unreachable switches in the first section increases the manual intervention and is not conducive to data integration.

[0008] To address these issues, there is an urgent need for a highly automated method and system for locating unreachable turnouts in the first section outside the signal gate.

[0009] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art. Summary of the Invention

[0010] The purpose of this invention is to provide a method and system for searching unreachable turnouts in the first section outside a signal. This method addresses the problem that manually configuring unreachable turnouts in the first section outside a signal by signal designers is inefficient and lacks accuracy, thus limiting the automation of interlocking data. By determining the first section outside each signal and sequentially searching and judging each signal device in the first section outside the signal, the method can automatically count all unreachable turnouts in the first section outside each signal for each signal. This method has a high degree of automation, improves efficiency, and avoids omissions and errors that may occur during manual configuration.

[0011] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0012] The first aspect of the present invention provides a method for searching for unreachable turnouts in a first section outside a signal, comprising:

[0013] Obtain all signaling equipment within a designated station, wherein the signaling equipment includes at least signals, track sections, and turnouts;

[0014] For each signal, the direction of the signal is obtained, and a search is performed in the opposite direction of the signal, starting from the signal, to determine the first segment outside the signal corresponding to the signal.

[0015] For each signal, starting from the signal and using the opposite direction of the signal direction as the initial search direction, each signal device is sequentially searched and judged within the first section outside the corresponding signal. When the searched signal device is a turnout, and the current search direction is the convergence direction of the turnout, and the previous signal device is connected to the opposite branch of the turnout, the turnout is determined to be an unreachable turnout in the first section outside the signal.

[0016] Optionally, determining the first segment outside the signal corresponding to the signal includes: taking the first segment found in the opposite direction to the direction of the signal as the first segment outside the signal.

[0017] Optionally, for each signal, if there is no track section in the opposite direction of the signal, it is determined that there is no corresponding first section outside the signal, and the search for unreachable turnouts in the first section outside the signal ends.

[0018] Optionally, for each signal, when the first section outside the signal corresponding to the signal is a no-turn section, track, or dead end, the search for locating unreachable turnouts in the first section outside the signal ends.

[0019] Optionally, the step of sequentially searching and judging each signal device within the first section outside the signal corresponding to the signal includes:

[0020] When the detected signal device is a turnout, and the current search direction is the diverging direction of the turnout, the search continues with the turnout's positioning direction and reverse direction as the new search directions.

[0021] Optionally, the step of sequentially searching and judging each signal device within the first section outside the signal corresponding to the signal includes:

[0022] When the detected signal device is a turnout, and the current search direction is the convergence direction of the turnout, and the previous signal device is connected to the positioning branch of the turnout, the search continues with the positioning direction of the turnout as the new search direction.

[0023] Optionally, the step of sequentially searching and judging each signal device within the first section outside the signal corresponding to the signal includes:

[0024] When the detected signal device is a turnout, and the turnout is an unreachable turnout in the first section outside the signal, the search continues in the opposite direction of the turnout.

[0025] Optionally, the step of sequentially searching and judging each signal device within the first section outside the signal corresponding to the signal includes:

[0026] When the detected signal device is an endpoint, the search in the current search direction ends.

[0027] Optionally, the step of sequentially searching and judging each signal device within the first section outside the signal corresponding to the signal includes:

[0028] If the detected signal device does not belong to the first segment outside the signal, the search in the current search direction ends.

[0029] Optionally, for each signal, after completing the search for all search directions, output the location of unreachable turnouts in the first section outside all searched signals.

[0030] Optionally, based on the topological relationships and data definitions in the national railway station map data, all signaling equipment within a specified station can be obtained.

[0031] Optionally, for each signal, duplicates are removed from all unreachable turnouts located in the first section outside the searched signal, and the turnout names of the unreachable turnouts located in the first section outside each signal are output sequentially from near to far based on the topological relationship in the national railway station map data.

[0032] A second aspect of the present invention provides a search system for locating unreachable turnouts in a first section outside a signal, comprising:

[0033] The storage module is used to acquire and store all signaling equipment within a specified station, including signals, track sections, and turnouts;

[0034] The identification module, connected to the storage module, is used to identify the first section outside the signal; the section identification module is used to obtain the direction of the signal for each signal, and search in the opposite direction of the signal starting from the signal to determine the first section outside the signal corresponding to the signal.

[0035] A judgment module, connected to the storage module and the identification module, is used to search for and judge signal devices within the first section outside the signal. The judgment module, for each signal, uses the signal as the starting point and the opposite direction of the signal's direction as the initial search direction, to sequentially search and judge each signal device within the first section outside the corresponding signal. Specifically, when the searched signal device is a turnout, the current search direction is the convergence direction of the turnout, and the previous signal device is connected to the opposite branch of the turnout, the judgment module judges the turnout to be an unreachable turnout within the first section outside the signal.

[0036] Optionally, the storage module is used to obtain all signaling equipment within a specified station based on the topological relationships and data definitions in the national railway station map data.

[0037] Optionally, the search system for unreachable turnouts located in the first section outside the signal also includes an output module. The output module is used to deduplicate all unreachable turnouts located in the first section outside the signal for each signal and output the turnout name of each unreachable turnout located in the first section outside the signal in order from near to far based on the topological relationship in the national railway station map data.

[0038] This invention has at least the following technical effects:

[0039] By identifying the first section outside each signal and sequentially searching and judging each signal device within that first section, the system can automatically count all unreachable turnouts in the first section outside each signal. This allows for the further integration of normally unreachable turnouts in the first section outside all signals within the platform. The system is highly automated, requires no manual modification by signal designers, improves efficiency, avoids omissions and errors in manual configuration, and fully meets the security requirements for interlocking data. Attached Figure Description

[0040] Figure 1 This is a flowchart illustrating a method for locating unreachable turnouts in the first section outside a signal gate, according to an embodiment of the present invention.

[0041] Figure 2 This is a flowchart illustrating the sequential search and judgment of signal devices within the first section outside the signal gate, according to an embodiment of the present invention.

[0042] Figure 3 This is a schematic diagram of a platform structure provided in an embodiment of the present invention;

[0043] Figure 4 For the corresponding Figure 3 A schematic diagram of the topological relationship of the middle platform structure. Detailed Implementation

[0044] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a method and system for locating unreachable turnouts in the first section outside a signal, as proposed in this invention. The advantages and features of this invention will become clearer from the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise scales, used only to facilitate and clearly illustrate the embodiments of this invention. Please refer to the accompanying drawings to make the objectives, features, and advantages of this invention more apparent and understandable. It should be understood that the structures, scales, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in scale, or adjustments to the size, without affecting the effects and objectives achieved by this invention, should still fall within the scope of the technical content disclosed in this invention.

[0045] like Figure 1 As shown, this embodiment provides a method for searching for unreachable turnouts in the first section outside a signal, which mainly includes identifying the first section outside the signal corresponding to the signal, and searching and judging the signal equipment in the first section outside the signal to determine the unreachable turnout in the first section outside the signal.

[0046] Specifically, to identify the first section outside the signal corresponding to a signal, it is necessary to obtain all signaling equipment within the specified station. Signaling equipment includes at least signals, sections, and switches. For example, all signaling equipment within the specified station can be obtained based on the topological relationships and data definitions in the national railway station map data. As those skilled in the art will understand, signaling equipment within a station is abstracted as a data element node in the station map data. The topological relationship refers to the connection relationship between two data element nodes when signaling equipment is drawn according to the actual station layout in the station map data. The data definition includes the data type of the data element node (e.g., whether the data element node is a signal or a track circuit) and data attributes (e.g., the specific orientation of the signal).

[0047] Furthermore, for each signal, the direction of the signal can be obtained, and a search can be performed in the opposite direction of the signal direction, starting from the signal, to determine the first segment outside the signal corresponding to the signal. That is, the first segment searched in the opposite direction of the signal direction is taken as the first segment outside the signal.

[0048] As those skilled in the art will understand, there may be situations where there are no sections outside the signal controller. Therefore, refer to Figure 1 In this embodiment, for each signal, if there is no track section in the opposite direction of the signal's direction, it can be determined that the corresponding first section outside the signal does not exist. The search for unreachable turnouts in the first section outside the signal then ends, meaning that further searching and judging of signal equipment within the first section outside the signal is no longer performed.

[0049] Similarly, within a section, there may be no switches (e.g., a switchless section, a track, or a dead end), or there may be multiple sets of switches. Therefore, refer to... Figure 1 In this embodiment, for each signal, when the first section outside the signal corresponding to the signal is a no-turnout section, track, or dead end, the search for unreachable turnouts in the first section outside the signal is also directly terminated, meaning that further searching and judgment of signaling equipment within the first section outside the signal is no longer performed. Based on the topological relationships and data definitions in the national railway station map data, it is possible to quickly identify whether the first section outside the signal in the station data is a turnout section.

[0050] To identify the first section outside each signal within the platform, it is necessary to search and assess the signaling equipment within that first section to determine which turnouts are unreachable. Specifically, starting from the signal, a search is conducted outwards from the first section outside the signal to obtain all turnouts along the search path. These turnouts are then filtered and assessed to identify all turnouts that are unreachable from the signal but accessible from the reverse position.

[0051] More specifically, see reference Figure 2 For each signal, we can start with the signal and initialize it as the previous device (corresponding to...). Figure 2 The lastEqu in the search term refers to the signal device found during the search process (corresponding to...). Figure 2 The item in the image corresponds to the previous signal device, and the search direction is the opposite of the signal direction of the signal machine. The first segment outside the signal machine (corresponding to the signal machine) is searched. Figure 2 Within the track, each signal device is searched and evaluated sequentially.

[0052] When the detected signal equipment is a turnout, it can be further determined whether the turnout is an unreachable turnout in the first section outside the signal based on the specific information of the turnout, and the search direction can be further determined based on the specific information of the turnout.

[0053] like Figure 2 As shown, we can first determine the direction of convergence of the turnout. When the searched signaling device is a turnout, if the current search direction is not the convergence direction of the turnout, but the divergence direction (i.e., searching from the switch rail towards the frog), it means that the turnout can reach the starting signal from both the positioning direction and the reverse direction. In this case, we can use the turnout as lastEqu and continue searching in both the positioning direction and the reverse direction of the turnout. That is, we can use the positioning direction and the reverse direction of the turnout as new search directions to continue the search.

[0054] When the search direction is the convergence direction of the turnout, that is, from the frog of the guide rail towards the switch rail, further judgment can be made based on the connection relationship between the turnout and the previous signaling device. It can be understood that the previous signaling device at this time could be the starting signal or other turnouts found in the previous search.

[0055] Specifically, when the detected signal device is a turnout, and the current search direction is the convergence direction of the turnout, if the positioning branch of the turnout is connected to the previous signal device, it means that the turnout can only reach the starting signal through the positioning branch. In this case, the turnout can be used as lastEqu, and the search can continue in the positioning direction of the turnout, that is, the positioning direction of the turnout can be used as the new search direction to continue the search.

[0056] When the detected signal device is a turnout, and the current search direction is the convergence direction of the turnout, if the reverse branch of the turnout is connected to the previous signal device, it means that the turnout can only reach the starting signal via the reverse branch. It can be determined that this turnout is an unreachable turnout in the first section outside the starting signal, and the turnout name is recorded. At this point, this turnout can be used as the lastEqu, and the search can continue in the reverse direction of the turnout, i.e., the reverse direction of the turnout can be used as the new search direction.

[0057] In some embodiments, the signal acquisition device further includes an endpoint, such as... Figure 2 As shown, in any search direction, when the signal device searched by the signal controller is an endpoint, the search for the current search direction ends. Similarly, when the searched signal device does not belong to the first segment outside the signal controller, for example, it is a signal controller other than the one that serves as the starting point, the search for the current search direction also ends.

[0058] For each signal, after completing the search in all directions, the system can output the locations of all unreachable turnouts in the first section outside the corresponding signal. The output result represents all unreachable turnouts in the first section outside the corresponding signal.

[0059] In some embodiments, for each signal, duplicates of all unreachable turnouts located in the first section outside the searched signal can be removed. Based on the topological relationship in the national railway station map data, the turnout names of the unreachable turnouts located in the first section outside each signal are output sequentially from near to far, according to the order relative to the signal. By outputting the names in order from near to far according to the topological relationship, it is convenient for data reviewers to verify the data and to troubleshoot test problems during automatic testing.

[0060] It is understood that the search method for locating unreachable turnouts in the first section outside the signal provided in this embodiment has good scalability. By modifying the search direction or other parameters, it can also be used to search for other types of turnouts. For example, by modifying the initial search direction to the same direction as the search signal and making corresponding changes to the judgment conditions, the search for unreachable turnouts in the first section inside the signal can be achieved.

[0061] The following section will use a specific platform structure as an example to further explain the search method for locating unreachable turnouts in the first section outside the signal light. (See reference...) Figure 3 The track distribution map of a portion of the station area shown is illustrated in the following topological diagram. Figure 4 As shown in the diagram. The diagram includes shunting signals D1, D3, D5, and D7; turnout sections 1-5DG; lead track D7G; turnout #1 (positioned for straight track); and turnout #5 (positioned for curved track). Signals D1 and D7 are used as the targets for searching for unreachable turnouts in the first section outside the signals.

[0062] First, for signal D7, its corresponding first section outside the signal is section D7G. Since section D7G is a lead-out line and belongs to a no-turnout section, signal D7 has no corresponding unreachable turnout in the first section outside the signal, and there is no need to further search and determine the signal equipment within section D7G. Alternatively, refer to... Figure 2 The search process shown starts with signal D7 and searches in the opposite direction of signal D7. When the next signal device found is the endpoint, the current search direction needs to be terminated.

[0063] For signal D1, the first section outside its corresponding signal area is section 1-5DG. Since section 1-5DG is a turnout section, further searching and identification of the signal equipment within this section is required. Yes, since the direction corresponding to signal D1 is the upward direction, the search can be performed within section 1-5DG, starting from signal D1 and proceeding along the downward direction.

[0064] Specifically, the search process includes the following steps:

[0065] Step 1: Set signal D1 as the initial lastEqu in the search path, and use it as the starting point to search along the current search direction, i.e., the down direction;

[0066] Step 2: Search along the down direction; the next signal device is turnout #1.

[0067] Step 3: Since the current search direction is the down direction (from left to right in the figure), and turnout #1 is a right-hand turnout, the current search direction is the diverging direction of turnout #1. This means that signal D1 can be reached through the positioning direction or the reverse direction of turnout #1. Therefore, turnout #1 is not a turnout that cannot be reached in the first section outside the signal. We can update lastEqu to turnout #1 and search along the positioning direction and the reverse direction of turnout #1 respectively.

[0068] Step 4: Continue the search along the reverse direction of turnout #1. The next signal device is signal D5. Since signal D5 does not belong to the first section outside the signal corresponding to signal D1, this search direction can be ended, and it is recorded that there is no unreachable turnout in the reverse direction of turnout #1.

[0069] Step 5: Continue searching along the positioning direction of turnout #1. The next signal device is turnout #5.

[0070] Step 6: Since the current search direction is the positioning direction of turnout #1 (downward direction), and turnout #5 is a left-opening turnout, the current search direction is the convergence direction of turnout #5. Since the previous signaling device is turnout #1, and turnout #1 is connected to the reverse branch of turnout #5, it indicates that signal D1 can only be reached via turnout #5 through the reverse direction. Therefore, turnout #5 is the unreachable turnout in the first section outside the signal corresponding to signal D1. Turnout #5 can be recorded, lastEqu updated to turnout #5, and the search can proceed along the reverse direction of turnout #5.

[0071] Step 7: Search along the opposite direction of turnout #5, i.e., the down direction. The next device is signal D3, therefore this search direction ends. At this point, all search directions within section 1-5DG have been completed.

[0072] Step 8: Within section 1-5DG, the unreachable turnout outside the signal D1 signal is located in the first section, which is turnout #5. There are no duplicate elements. Output.

[0073] In summary, using the search method for unreachable turnouts in the first section outside the signal provided in this embodiment, searches were performed on signal D1 and signal D7 respectively. The search results are as follows: For signal D1, the first section outside the signal is section 1-5DG, and the corresponding unreachable turnout in the first section outside the signal is turnout #5. For signal D7, the first section outside the signal is section D7G, which is a turnout-free section, and there are no unreachable turnouts in the first section outside the signal.

[0074] In other aspects, this embodiment also provides a search system for locating unreachable turnouts in the first section outside the signal, including a storage module, an identification module, and a judgment module.

[0075] The storage module is used to acquire and store all signaling equipment within a specified station, including signals, track sections, and turnouts. For example, the storage module acquires all signaling equipment within a specified station based on the topological relationships and data definitions in the national railway station map data.

[0076] The identification module is connected to the storage module and is used to identify the first section outside the signal. For example, for each signal, the direction of the signal is obtained, and a search is performed in the opposite direction of the signal's direction, starting from the signal, to determine the first section outside the signal corresponding to the signal.

[0077] The judgment module, connected to the storage and identification modules, is used to determine whether a turnout is an unreachable turnout located in the first section outside the signal. Specifically, for each signal, the judgment module searches and judges each signal device sequentially within the first section outside the corresponding signal, starting from the signal and using the opposite direction of the signal's direction as the initial search direction. For example, if the searched signal device is a turnout, the current search direction is the convergence direction of the turnout, and the previous signal device is connected to the opposite branch of the turnout, the judgment module can determine that the turnout is an unreachable turnout located in the first section outside the signal.

[0078] The output module is used to deduplicate all unreachable turnouts located in the first section outside each signal for each signal, and outputs the turnout names of the unreachable turnouts located in the first section outside each signal in order from near to far based on the topological relationship in the national railway station map data.

[0079] This invention identifies the first section outside each signal and sequentially searches and judges each signal device within that first section. It can automatically count all unreachable turnouts in the first section outside each signal for each signal, thereby further integrating the normally unreachable turnouts in the first section outside all signals within the platform. This invention has a high degree of automation, requires no manual modification by signal designers, improves efficiency, avoids omissions and errors in manual configuration, and fully meets the security requirements for interlocking data.

[0080] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0081] It should be noted that the apparatus and methods disclosed in the embodiments herein can also be implemented in other ways. The apparatus embodiments described above are merely illustrative; for example, the flowcharts and block diagrams in the accompanying drawings show the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments herein. In this regard, each block in a flowchart or block diagram may represent a module, program, or part of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system to perform the specified function or action, or can be implemented using a combination of dedicated hardware and computer instructions.

[0082] In addition, the functional modules in the various embodiments of this article can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0083] 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 searching for unreachable turnouts in the first section outside a signal, characterized in that, include: Obtain all signaling equipment within a designated station, wherein the signaling equipment includes at least signals, track sections, and turnouts; For each signal, the direction of the signal is obtained, and a search is performed in the opposite direction of the signal, starting from the signal, to determine the first segment outside the signal corresponding to the signal. For each signal, starting from the signal and using the opposite direction of the signal's direction as the initial search direction, each signal device is sequentially searched and judged within the first section outside the corresponding signal. When the searched signal device is a turnout, and the current search direction is the convergence direction of the turnout, and the previous signal device is connected to the opposite branch of the turnout, the turnout is determined to be an unreachable turnout in the first section outside the signal and recorded.

2. The method for searching for unreachable turnouts in the first section outside the signal gate according to claim 1, characterized in that, The step of determining the first segment outside the signal corresponding to the signal includes: taking the first segment found in the opposite direction of the signal direction as the first segment outside the signal.

3. The method for searching for unreachable turnouts in the first section outside the signal gate according to claim 1, characterized in that, For each signal, if there is no track section in the opposite direction of the signal, it is determined that there is no corresponding first section outside the signal, and the search for unreachable turnouts in the first section outside the signal ends.

4. The method for searching for unreachable turnouts in the first section outside the signal gate according to claim 1, characterized in that, For each signal, when the first section outside the signal corresponding to the signal is a no-turn section, track, or dead end, the search for unreachable turnouts in the first section outside the signal ends.

5. The method for searching for unreachable turnouts in the first section outside the signal gate according to claim 1, characterized in that, The step of sequentially searching and judging each signal device within the first section outside the corresponding signal includes: When the detected signal device is a turnout, and the current search direction is the diverging direction of the turnout, the search continues with the turnout's positioning direction and reverse direction as the new search directions.

6. The method for searching for unreachable turnouts in the first section outside the signal gate according to claim 1, characterized in that, The step of sequentially searching and judging each signal device within the first section outside the corresponding signal includes: When the detected signal device is a turnout, and the current search direction is the convergence direction of the turnout, and the previous signal device is connected to the positioning branch of the turnout, the search continues with the positioning direction of the turnout as the new search direction.

7. The method for searching for unreachable turnouts in the first section outside the signal gate according to claim 1, characterized in that, The step of sequentially searching and judging each signal device within the first section outside the corresponding signal includes: When the detected signal device is a turnout, and the turnout is an unreachable turnout in the first section outside the signal, the search continues in the opposite direction of the turnout.

8. The method for searching for unreachable turnouts in the first section outside the signal gate according to claim 1, characterized in that, The step of sequentially searching and judging each signal device within the first section outside the corresponding signal includes: When the detected signal device is an endpoint, the search in the current search direction ends.

9. The method for searching for unreachable turnouts in the first section outside the signal gate according to claim 1, characterized in that, The step of sequentially searching and judging each signal device within the first section outside the corresponding signal includes: If the detected signal device does not belong to the first segment outside the signal, the search in the current search direction ends.

10. The method for searching for unreachable turnouts in the first section outside the signal gate according to any one of claims 8 or 9, characterized in that, For each signal, after completing the search in all search directions, output the location of unreachable turnouts in the first section outside all searched signals.

11. The method for searching for unreachable turnouts in the first section outside the signal gate according to claim 1, characterized in that, Based on the topological relationships and data definitions in the national railway station map data, obtain all signaling equipment within the specified station.

12. The method for searching for unreachable turnouts in the first section outside the signal gate according to claim 10, characterized in that, For each signal, duplicates are removed from all unreachable turnouts located in the first section outside the searched signal. Based on the topological relationship in the national railway station map data, the turnout names of the unreachable turnouts located in the first section outside each signal are output sequentially from near to far.

13. A search system for locating unreachable turnouts in the first section outside a signal, characterized in that, include: The storage module is used to acquire and store all signaling equipment within a specified station, including signals, track sections, and turnouts; The identification module, connected to the storage module, is used to identify the first section outside the signal; the identification module is used to obtain the direction of the signal for each signal, and search in the opposite direction of the signal starting from the signal to determine the first section outside the signal corresponding to the signal. A judgment module, connected to the storage module and the identification module, is used to search for and judge signal devices within the first section outside the signal. The judgment module, for each signal, uses the signal as the starting point and the opposite direction of the signal's direction as the initial search direction, to sequentially search and judge each signal device within the first section outside the corresponding signal. Specifically, when the searched signal device is a turnout, the current search direction is the convergence direction of the turnout, and the previous signal device is connected to the opposite branch of the turnout, the judgment module judges the turnout to be an unreachable turnout within the first section outside the signal.

14. The search system for locating unreachable turnouts in the first section outside the signal gate according to claim 13, characterized in that, The storage module is used to obtain all signaling equipment within a specified station based on the topological relationships and data definitions in the national railway station map data.

15. The search system for locating unreachable turnouts in the first section outside the signal gate according to claim 14, characterized in that, It also includes an output module, which is used to deduplicate all unreachable turnouts located in the first section outside each signal for each signal, and output the turnout names of the unreachable turnouts located in the first section outside each signal in order from near to far based on the topological relationship in the national railway station map data.

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