A high-reliability optical cable communication method and device for limited space emergency repair

Abstract

The application discloses a kind of high-reliability optical cable communication methods and devices for limited space emergency repair, it is related to optical cable communication technical field, including obtaining emergency repair task list and space real-time survey data, according to emergency repair task list and space real-time survey data, obtain field basic data set, according to field basic data set, obtain reference work point.The application realizes the accurate quantification of the distribution characteristics of limited space work points by constructing a work distance matrix and determining the reference work point, sets the regional division threshold by the requirements of the hub deployment, and adaptively networks, realizes the flexible configuration of single / multi communication hub, adapts the communication coverage demand of different scale limited space, allocates the coverage range by the regional density characteristic value and sets the position of main and auxiliary hub, realizes the optimal communication distance and balanced coverage of each work point, ensures the efficiency and stability of emergency communication, and guarantees the high reliability of communication.

Description

Technical Field

[0001] This invention relates to the field of optical fiber communication technology, specifically to a highly reliable optical fiber communication method and device for emergency repair in confined spaces. Background Technology

[0002] Underground utility tunnels, urban tunnels, mine roadways, enclosed production workshops, and underground civil defense projects are core scenarios for urban infrastructure operation and maintenance and industrial production. Their enclosed spaces, complex structures, harsh electromagnetic environments, and the vulnerability of existing communication infrastructure to disasters, explosions, or accidents make communication support during emergency repairs a critical lifeline determining the success of repairs and the safety of personnel. The scientific, rapid, and safe deployment of emergency fiber optic communication networks can ensure real-time two-way transmission of voice, high-definition video, and equipment data between the repair site and the command center. This enables precise positioning of repair personnel, real-time monitoring of operational status, rapid reporting of fault information, and efficient issuance of command instructions. It is of paramount practical significance for improving emergency response speed, shortening repair time, preventing secondary accidents, and ensuring the safety of repair personnel.

[0003] Currently, fiber optic communication for emergency repairs in confined spaces suffers from several drawbacks. It cannot accurately analyze the confined space, cannot set up suitable communication hubs based on spatial characteristics, resulting in low deployment efficiency. This makes it difficult to meet the "every second counts" rapid response requirements of emergency repairs. Furthermore, misjudgments can easily lead to communication coverage blind spots or significant waste of cable resources. The predominantly fixed, single star topology fails to adapt the network architecture to the distribution density and coverage area of ​​on-site work points. When deploying multiple hubs, there is a lack of scientific methods for area division and location calculation. Optimal area segmentation and hub selection are not based on the distance and density characteristics of work points, leading to uneven hub coverage, excessively high communication latency at some work points, and a serious risk of single-point failure. If a communication link or a single hub device fails, communication in the corresponding area will be completely paralyzed, severely impacting the continuity and safety of emergency repairs. Summary of the Invention

[0004] To address the aforementioned technical problems, this paper provides a highly reliable optical cable communication method and device for emergency repair in confined spaces. This technical solution solves the problems mentioned in the background technology, such as the inability to accurately analyze confined spaces, the inability to set up suitable communication hubs according to spatial characteristics, low deployment efficiency, difficulty in meeting the "every second counts" rapid response requirements of emergency repair, and the ease with which misjudgments can lead to communication coverage blind spots or serious waste of cable resources. Furthermore, the commonly used fixed, single star topology cannot adaptively adjust the network architecture according to the distribution density and coverage of on-site work points. When deploying multiple hubs, there is a lack of scientific area division and location calculation methods, and the failure to perform optimal area segmentation and hub site selection based on the distance and density characteristics of work points results in uneven hub coverage, excessively high communication latency at some work points, and a serious risk of single point of failure. Once a communication link or a single hub device is damaged, communication in the corresponding area will be completely paralyzed, seriously affecting the continuity and safety of emergency repair.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A highly reliable optical cable communication method for emergency repair in confined spaces includes: Obtain an emergency repair task list and real-time spatial survey data, wherein the real-time spatial survey data represents the limited space corresponding to the emergency repair; Based on the emergency repair task list and real-time spatial survey data, a basic on-site dataset is obtained, which includes work point data and safe area vector data. Based on the on-site basic dataset, obtain the baseline operating point; Based on the minimum space requirements for the deployment of emergency communication hub equipment, determine the minimum area of ​​the main communication hub installation area; The square root of the minimum area of ​​the main communication hub setting area is used as the area division threshold. Based on the baseline working point and the region division threshold, it is determined whether to perform region division. If the maximum straight-line distance between the baseline working points does not exceed the region division threshold, then based on the safe region vector data, all positions in the safe region are traversed to obtain the straight-line distance between any position and all working points. The location corresponding to the minimum sum of straight-line distances from all working points in the safe zone is taken as the location of the communication hub, and all working points are connected to the communication hub. If the maximum straight-line distance between the reference working points exceeds the region division threshold, the main central location information and the secondary central location information are obtained based on the field basic dataset and the reference working points. Based on the location information of the main and secondary central hubs, a communication hub is set up and a ring network is formed, and the working points are linked to the communication hubs of the corresponding areas.

[0006] Preferably, the step of obtaining the on-site basic dataset based on the emergency repair task list and real-time spatial survey data specifically includes: Based on the emergency repair task list, obtain the location information of the work points corresponding to the repair tasks; Based on real-time survey data, danger zones are marked; Based on the boundary of the danger zone, the area on site that is not marked as a danger zone and meets the conditions for optical cable deployment is designated as the initial safe zone; Based on the initial safety zone, scattered safety zones with an area of ​​less than 1 square meter are eliminated to generate continuous on-site safety zone vector data; Based on the work point location information, a Cartesian coordinate system is established, and the positions of all work points are converted into on-site Cartesian coordinates to generate a work point Cartesian coordinate dataset. The work point plane coordinate dataset is validated, and abnormal work points whose coordinates exceed the field boundary are removed; Based on the verified work point plane coordinate dataset, a unique identifier is assigned to each work point, the emergency repair priority and equipment type information of the work point are recorded, and work point data is obtained. Based on the corrected working point data and safety zone vector data, a standardized field basic dataset is generated.

[0007] Preferably, obtaining the baseline working point based on the field basic dataset specifically includes: Based on the working point plane coordinate dataset, extract the plane rectangular coordinates of all working points; Construct a working distance matrix based on the Cartesian coordinates of all working points; Wherein, the matrix elements of the working distance matrix represent the straight-line distance between the corresponding working points; Based on the Euclidean distance formula, obtain the value corresponding to each matrix element; Traverse all upper triangular elements of the distance matrix and take the two working points corresponding to the maximum value as the reference working points. The reference working points include the first reference working point and the second reference working point. The direction of the line connecting the two reference working points is taken as the direction of the main axis.

[0008] Preferably, the step of obtaining the main central location information and the secondary central location information based on the on-site basic dataset and the benchmark working point specifically includes: Based on the planar coordinates of the first reference working point, traverse the straight-line distances between all working points and the first reference point, sort them in ascending order of distance, and obtain the first distance sequence. Based on the first distance sequence, the average of the distance values ​​of the three nearest working points is used as the regional density feature value of the first benchmark working point; Based on the planar coordinates of the second reference working point, traverse the straight-line distances between all working points and the second reference point, sort them in ascending order of distance, and obtain the second distance sequence; Based on the second distance sequence, the distance values ​​of the three nearest working points are used as the regional density feature values ​​of the second reference working point; Based on the region division threshold, the half-side threshold of the region is obtained based on the maximum straight-line distance between two benchmark working points; The sum of the regional density feature values ​​of the first and second reference working points is used as the basic regional feature value. The ratio of the regional density characteristic value of the first reference working point to the basic regional characteristic value is used as the regional coefficient of the first reference working point, and the ratio of the regional density characteristic value of the second reference working point to the basic regional characteristic value is used as the regional coefficient of the second reference working point. The product of the regional coefficient of the first reference working point and the regional half-side threshold is used as the half-side length of the first covering rectangle, and the product of the regional coefficient of the second reference working point and the regional half-side threshold is used as the half-side length of the second covering rectangle. Based on the half-side length of the first covering rectangle, and with the first reference working point as the center, a first covering rectangle with sides parallel to the main axis direction is generated to obtain the first working area; Based on the half-side length of the second covering rectangle, and with the second reference working point as the center, the second covering rectangle is generated in the same way to obtain the second working area; Based on the first working area, the second working area, and the interval area, obtain the main central location information and the secondary central location information.

[0009] Preferably, the step of obtaining the main central location information and the secondary central location information based on the first working area, the second working area, and the interval area specifically includes: Based on the boundary between the first working area and the second working area, obtain the boundary information of the interval area; Based on the four boundaries of the interval region, extract the largest axis-aligned rectangle within the interval region to obtain the third working region, whose boundary is completely consistent with the boundary of the interval region. Use the geometric center of the third covering rectangle as the interval feature point; Based on the first reference working point, the second reference point, and the interval feature point, traverse the straight-line distances between all working points and the first reference point, the second reference point, and the interval feature point. Sum the straight-line distances between all working points and the first reference point as the first reference distance, sum the straight-line distances between all working points and the second reference point as the second reference distance, and sum the straight-line distances between all working points and the interval feature point as the third reference distance. The region corresponding to the minimum value among the first, second, and third reference distances is taken as the reference central region, and the remaining regions are taken as secondary central regions. Based on the baseline central region and the secondary central region, obtain the location information of the primary central region and the secondary central region.

[0010] Preferably, the step of obtaining the primary central location information and the secondary central location information based on the baseline central region and the secondary central region specifically includes: Based on the on-site safety zone vector data, the overlapping area between the reference central area and the safety zone is taken as the main central area; Traverse all positions in the main central region and obtain the straight-line distance between any position and all working points in the baseline central region; The position corresponding to the minimum sum of straight-line distances to all working points in the reference central region is taken as the main central position; If the reference central region and the safe region do not overlap, then all positions in the safe region are traversed to obtain the straight-line distance between any position and all working points in the reference central region. The position corresponding to the minimum sum of straight-line distances to all working points in the reference central region is taken as the main central position; Based on the secondary central region, traverse all positions within each secondary central region to obtain the straight-line distance between any position and all working points within that secondary central region; The position corresponding to the minimum sum of straight-line distances between each secondary central region and all working points within that secondary central region is taken as the sub-central position of that secondary central region.

[0011] Furthermore, a highly reliable optical fiber communication device for emergency repair in confined spaces is proposed to realize the communication method described above, including: The main control module is used to obtain the location of the communication hub based on the vector data of the safety area, obtain the location information of the main hub and the secondary hub based on the on-site basic dataset and the reference working point, determine the minimum area of ​​the main communication hub setting area based on the minimum space requirements for the deployment of emergency communication hub equipment, use the square root of the minimum area of ​​the main communication hub setting area as the area division threshold, set up the communication hub and form a ring network based on the location information of the main hub and the secondary hub, and link the working point with the communication hub of the corresponding area. The information acquisition module is used to acquire the emergency repair task list and real-time space survey data, and to acquire the on-site basic dataset based on the emergency repair task list and real-time space survey data. The region division module is used to construct a working distance matrix based on the Cartesian coordinates of all working points, obtain a reference working point based on the working distance matrix, obtain a first working area and a second working area based on the field basic dataset and the reference working point, and obtain a third working area based on the boundary between the first working area and the second working area. The display module interacts with the main control module and is used to output and display emergency repair task lists, real-time spatial survey data, reference working points, main central location information, and secondary central location information.

[0012] Optionally, the main control module specifically includes: The control unit is used to determine the minimum area of ​​the main communication hub setting area based on the minimum space requirements for the deployment of emergency communication hub equipment, take the square root of the minimum area of ​​the main communication hub setting area as the area division threshold, set up the communication hub and form a ring network according to the main hub location information and the secondary hub location information, and link the working point with the communication hub of the corresponding area. An information receiving unit, together with an information acquisition module and a region division module, is used to receive data and transmit it to a region evaluation unit. The regional assessment unit is used to obtain the location of the communication hub based on the safety area vector data, and to obtain the location information of the main hub and the location information of the secondary hub based on the field basic dataset and the benchmark working point.

[0013] Optionally, the information acquisition module specifically includes: The first acquisition unit is used to acquire an emergency repair task list and real-time spatial survey data, wherein the real-time spatial survey data represents the limited space corresponding to the emergency repair. The second acquisition unit is used to acquire the on-site basic dataset based on the emergency repair task list and real-time spatial survey data.

[0014] Optionally, the region division module specifically includes: A spatial analysis unit is used to construct a working distance matrix based on the Cartesian coordinates of all working points, and to obtain a reference working point based on the working distance matrix. The region division unit is used to obtain a first working area and a second working area based on the on-site basic dataset and the benchmark working point, and to obtain a third working area based on the boundary between the first working area and the second working area.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention proposes a highly reliable optical cable communication method and device for emergency repair in confined spaces. By constructing a working distance matrix and determining the benchmark working point, the distribution characteristics of working points in confined spaces are accurately quantified. By setting regional division thresholds based on central deployment requirements and adaptive networking, flexible configuration of single / multiple communication central hubs is achieved, adapting to the communication coverage needs of confined spaces of different sizes. By allocating coverage ranges through regional density feature values ​​and setting the positions of primary and secondary central hubs, optimal communication distance and balanced coverage of each working point are achieved, ensuring the efficiency and stability of emergency communication and guaranteeing high reliability of communication. Attached Figure Description

[0016] Figure 1 This is a flowchart of a highly reliable optical cable communication method for emergency repair in confined spaces proposed in this invention; Figure 2 This is a flowchart of the process for acquiring the basic on-site dataset in this invention; Figure 3 This is a flowchart of the process for obtaining the reference operating point in this invention; Figure 4 This is a flowchart illustrating the acquisition process of the first and second working areas in this invention. Figure 5 This is a structural block diagram of a highly reliable optical cable communication device for emergency repair in confined spaces, as proposed in this invention. Detailed Implementation

[0017] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0018] Reference Figure 1 - Figure 4 As shown in the figure, a highly reliable optical cable communication method for emergency repair in confined spaces according to an embodiment of the present invention includes: Obtain an emergency repair task list and real-time spatial survey data, wherein the real-time spatial survey data represents the limited space corresponding to the emergency repair; Based on the emergency repair task list and real-time spatial survey data, a basic on-site dataset is obtained, which includes work point data and safe area vector data. Specifically, based on the emergency repair task list and real-time space survey data, a basic on-site dataset is obtained, including: Based on the emergency repair task list, obtain the location information of the work points corresponding to the repair tasks; Based on real-time survey data, danger zones are marked; Based on the boundary of the danger zone, the area on site that is not marked as a danger zone and meets the conditions for optical cable deployment is designated as the initial safe zone; Based on the initial safety zone, scattered safety zones with an area of ​​less than 1 square meter are eliminated to generate continuous on-site safety zone vector data; Based on the work point location information, a Cartesian coordinate system is established, and the positions of all work points are converted into on-site Cartesian coordinates to generate a work point Cartesian coordinate dataset. The work point plane coordinate dataset is validated, and abnormal work points whose coordinates exceed the field boundary are removed; Based on the verified work point plane coordinate dataset, a unique identifier is assigned to each work point, the emergency repair priority and equipment type information of the work point are recorded, and work point data is obtained. Based on the corrected working point data and safety zone vector data, a standardized field basic dataset is generated.

[0019] This solution extracts the location information of the work points corresponding to the emergency repair tasks to accurately locate the core points of the emergency repair operations, providing clear targets for the planning of optical cable communication coverage and avoiding blind deployment. Based on real-time survey data, hazardous areas are marked to eliminate high-risk areas such as toxic, explosive, and structurally unstable areas from the source, ensuring that optical cable communication equipment and cables are deployed within a safe range, mitigating safety risks, and protecting personnel and equipment safety. An initial safe zone is delineated based on the boundaries of hazardous areas, accurately selecting safe spaces that meet the conditions for optical cable laying, eliminating dangerous interference, defining a compliant space range for optical cable deployment, and eliminating scattered safe areas with insufficient area to generate a continuous safe zone vector number. To avoid segmented and discontinuous fiber optic cable laying, ensure the continuous and stable fiber optic link, reduce the risk of communication failures, establish a Cartesian coordinate system and transform the coordinates of working points, converting spatial locations into standardized values ​​to achieve precise quantification of points within a limited space. This provides accurate spatial data support for subsequent distance calculations and area division. It also verifies and eliminates abnormal working points that exceed boundaries, purifies the point dataset, prevents invalid or erroneous points from affecting the selection of communication hub locations and network planning, improves data reliability, assigns unique identifiers to working points and records priority and equipment type, enabling refined point management. This facilitates the allocation of communication resources according to the importance of emergency repairs, ensuring priority and reliability of communication at core work points.

[0020] It is understood that in this scheme, the dangerous area refers to an area with risks such as toxicity, explosiveness, and structural instability. The selection and setting of specific areas can be adjusted according to actual needs. The Cartesian coordinate system in this scheme can be constructed with any position in a limited space as the origin. It is only used to describe the positional characteristics and does not affect the technical effect of this scheme. Under the technical concept of this invention, those skilled in the art can realize the setting of dangerous areas and the construction of the Cartesian coordinate system through conventional technical means without creative labor.

[0021] Based on the on-site basic dataset, obtain the baseline operating point; Specifically, based on the field-based dataset, a baseline operating point is obtained, including: Based on the working point plane coordinate dataset, extract the plane rectangular coordinates of all working points; Construct a working distance matrix based on the Cartesian coordinates of all working points; Wherein, the matrix elements of the working distance matrix represent the straight-line distance between the corresponding working points; Based on the Euclidean distance formula, obtain the value corresponding to each matrix element; Traverse all upper triangular elements of the distance matrix and take the two working points corresponding to the maximum value as the reference working points. The reference working points include the first reference working point and the second reference working point. The direction of the line connecting the two reference working points is taken as the direction of the main axis.

[0022] In this scheme, the spatial location of all working points is standardized and quantified by extracting their Cartesian coordinates, providing a precise coordinate basis for distance calculation and benchmark selection. By constructing a working distance matrix, the spatial relationship between working points is presented in a structured manner, clearly quantifying the straight-line distance relationship between all points. The distance between points is accurately measured by calculating the matrix elements using Euclidean distance, ensuring the accuracy of spatial distance measurement. By traversing the matrix to lock the working point corresponding to the maximum distance, the benchmark points at both ends of the limited space are accurately selected, clarifying the core reference for spatial span. The direction of the main axis is determined by connecting the benchmark points, achieving unified calibration of the main direction of the spatial layout, and providing a core spatial benchmark for subsequent area division and central location selection.

[0023] Based on the minimum space requirements for the deployment of emergency communication hub equipment, determine the minimum area of ​​the main communication hub installation area; The square root of the minimum area of ​​the main communication hub setting area is used as the area division threshold. Based on the baseline working point and the region division threshold, it is determined whether to perform region division. If the maximum straight-line distance between the baseline working points does not exceed the region division threshold, then based on the safe region vector data, all positions in the safe region are traversed to obtain the straight-line distance between any position and all working points. The location corresponding to the minimum sum of straight-line distances from all working points in the safe zone is taken as the location of the communication hub, and all working points are connected to the communication hub. Understandably, if the maximum straight-line distance between the reference working points does not exceed the area division threshold, it means that a single communication hub can cover the working points. In this case, after selecting the communication hub within the safe area, the working points are directly linked to the communication hub to achieve optical fiber communication.

[0024] If the maximum straight-line distance between the reference working points exceeds the region division threshold, the main central location information and the secondary central location information are obtained based on the field basic dataset and the reference working points. Specifically, based on the on-site basic dataset and benchmark working points, the location information of the main central hub and the secondary central hub is obtained, including: Based on the planar coordinates of the first reference working point, traverse the straight-line distances between all working points and the first reference point, sort them in ascending order of distance, and obtain the first distance sequence. Based on the first distance sequence, the average of the distance values ​​of the three nearest working points is used as the regional density feature value of the first benchmark working point; Based on the planar coordinates of the second reference working point, traverse the straight-line distances between all working points and the second reference point, sort them in ascending order of distance, and obtain the second distance sequence; Based on the second distance sequence, the distance values ​​of the three nearest working points are used as the regional density feature values ​​of the second reference working point; Based on the region division threshold, the half-side threshold of the region is obtained based on the maximum straight-line distance between two benchmark working points; The sum of the regional density feature values ​​of the first and second reference working points is used as the basic regional feature value. The ratio of the regional density characteristic value of the first reference working point to the basic regional characteristic value is used as the regional coefficient of the first reference working point, and the ratio of the regional density characteristic value of the second reference working point to the basic regional characteristic value is used as the regional coefficient of the second reference working point. The product of the regional coefficient of the first reference working point and the regional half-side threshold is used as the half-side length of the first covering rectangle, and the product of the regional coefficient of the second reference working point and the regional half-side threshold is used as the half-side length of the second covering rectangle. Based on the half-side length of the first covering rectangle, and with the first reference working point as the center, a first covering rectangle with sides parallel to the main axis direction is generated to obtain the first working area; Based on the half-side length of the second covering rectangle, and with the second reference working point as the center, the second covering rectangle is generated in the same way to obtain the second working area; Based on the first working area, the second working area, and the interval area, obtain the main central location information and the secondary central location information.

[0025] In this scheme, the distance sequence of benchmark points is obtained by traversing and sorting, so as to accurately quantify the distribution of working points around the benchmark points and provide ordered distance data for regional density analysis. By calculating the mean of the nearest points as the regional density feature value, the density of the benchmark point area is scientifically represented, accurately reflecting the density of local points. By setting a half-side threshold for the region, the zoning scale is adapted to the overall spatial span, ensuring the rationality of the regional division. By calculating the regional coefficient and allocating the coverage weight, the regional coverage range is dynamically allocated according to the point density to avoid zoning imbalance. By generating a coverage rectangle to delineate the working area, the zoning range and point distribution are accurately matched to ensure the targeted regional coverage. By integrating information from multiple regions, the central base is determined, and the layout of the main and secondary central bases is deeply adapted to the spatial and point characteristics, laying a scientific foundation for balanced networking.

[0026] In this embodiment, the region half-side threshold is specifically: ; In the formula, For the half-side threshold of the region, This represents the maximum straight-line distance between two reference working points. The threshold for region division; Specifically, based on the first working area, the second working area, and the interval area, the main central location information and the secondary central location information are obtained, including: Based on the boundary between the first working area and the second working area, obtain the boundary information of the interval area; Based on the four boundaries of the interval region, extract the largest axis-aligned rectangle within the interval region to obtain the third working region, whose boundary is completely consistent with the boundary of the interval region. Use the geometric center of the third covering rectangle as the interval feature point; Based on the first reference working point, the second reference point, and the interval feature point, traverse the straight-line distances between all working points and the first reference point, the second reference point, and the interval feature point. Sum the straight-line distances between all working points and the first reference point as the first reference distance, sum the straight-line distances between all working points and the second reference point as the second reference distance, and sum the straight-line distances between all working points and the interval feature point as the third reference distance. The region corresponding to the minimum value among the first, second, and third reference distances is taken as the reference central region, and the remaining regions are taken as secondary central regions. Based on the baseline central region and the secondary central region, obtain the location information of the primary central region and the secondary central region.

[0027] In this solution, the boundary of the interval area is extracted based on the boundaries of the first and second working areas. This accurately identifies the interval area between two core working areas in a limited space, avoiding omissions or range deviations in site selection due to ambiguous spatial boundaries. It provides a complete and clear global spatial framework for subsequent central hub site selection, ensuring seamless communication layout coverage. The largest axis-aligned rectangle is extracted from the interval area as the third working area, transforming irregularly shaped and unusable transitional spaces in the limited space into regular, standard areas. This adapts to the spatial regularity requirements for the installation of communication central hub equipment, while simplifying the complexity of subsequent coordinate calculations and distance measurements, reducing site selection errors caused by spatial distortions. Using the geometric center of the third working area as the interval feature point, a neutral spatial reference benchmark is established between the two benchmark working points. This system effectively balances the communication distances between the two working points, preventing excessive bias of the central hub towards one end that could lead to severe signal attenuation at the other. It provides a core reference for balanced cross-regional networking. By summing the straight-line distances between all working points and three types of feature points, the abstract spatial coverage efficiency is transformed into a quantifiable benchmark distance value. This objectively reflects the overall communication cost of each region to all working points. The region corresponding to the minimum benchmark distance is selected as the benchmark central region. From a global perspective, the core region with the highest comprehensive coverage efficiency and lowest signal loss for all working points is selected, ensuring optimal location of the main central hub. This meets the real-time, low-latency communication requirements for emergency repairs. The system distinguishes between the benchmark central region and secondary central regions, clearly defining the hierarchy and functional division of the main and secondary central hubs, providing a clear layout logic for subsequent ring network deployment. The main central hub is responsible for core communication scheduling, while the secondary central hub serves as a redundant backup, effectively mitigating the risk of communication interruption due to single-point failures. It also adapts to the characteristics of dispersed working points in limited space, ensuring high reliability of communication across the entire region.

[0028] It is understandable that, based on the half-side length of the first covering rectangle, the first reference working point... Centered on the main axis, a first covering rectangle is generated with its edges parallel to the main axis direction. The boundary of the first working region is then: Left boundary right boundary upper boundary lower boundary ; Using the second reference working point Similarly, using the center as the boundary, generate a second covering rectangle and determine its four boundary coordinates: Left boundary right boundary upper boundary lower boundary ; Based on the boundaries of the first and second covering rectangles, the range of the interval region is determined: The left boundary is the right boundary of the first covering rectangle. The right boundary is the left boundary of the second covering rectangle. Based on the left and right boundaries, the upper and lower boundaries are extended until all remaining working points are covered.

[0029] Specifically, based on the baseline central region and the secondary central region, the primary central location information and the secondary central location information are obtained, including: Based on the on-site safety zone vector data, the overlapping area between the reference central area and the safety zone is taken as the main central area; Traverse all positions in the main central region and obtain the straight-line distance between any position and all working points in the baseline central region; The position corresponding to the minimum sum of straight-line distances to all working points in the reference central region is taken as the main central position; If the reference central region and the safe region do not overlap, then all positions in the safe region are traversed to obtain the straight-line distance between any position and all working points in the reference central region. The position corresponding to the minimum sum of straight-line distances to all working points in the reference central region is taken as the main central position; Based on the secondary central region, traverse all positions within each secondary central region to obtain the straight-line distance between any position and all working points within that secondary central region; The position corresponding to the minimum sum of straight-line distances between each secondary central region and all working points within that secondary central region is taken as the sub-central position of that secondary central region.

[0030] In this solution, the overlapping area between the baseline hub area and the safe area is defined as the main hub area. Strict adherence to confined space safety deployment principles ensures that the main hub equipment is deployed only within safe and feasible construction areas, guaranteeing the security and compliance of the communication hub deployment. The solution iterates through all locations within the main hub area and calculates the sum of distances to all work points. The location corresponding to the minimum distance sum is selected as the main hub, precisely identifying the optimal location with the shortest overall communication distance, minimal signal loss, and most balanced coverage for all work points within the area. This effectively reduces the length of optical cable laying, minimizes signal attenuation, and ensures the main hub provides comprehensive coverage to all work points. The system provides efficient communication support and automatically switches to full-area traversal site selection for extreme cases where the baseline hub and the safety zone do not overlap. This avoids site selection failures due to spatial boundary conflicts and adapts to the complex and irregular shapes of safety zones in limited spaces, improving the robustness of the solution. It independently traverses each secondary hub area, calculates distances, and determines the optimal sub-hub location. It accurately matches sub-hub locations based on the distribution characteristics of work points in different secondary areas, avoiding blind sub-hub site selection and ensuring that work points in each secondary area can obtain short-distance, low-loss communication links. This achieves balanced communication coverage across the entire domain and forms a collaborative layout of "core coordination + regional support." The main hub undertakes core communication scheduling, while the sub-hubs serve as regional redundancy backups, effectively avoiding communication interruptions caused by single-point failures and adapting to the stringent requirements of high reliability and continuity of communication for emergency repairs in limited spaces.

[0031] Based on the location information of the main and secondary central hubs, a communication hub is set up and a ring network is formed, and the working points are linked to the communication hubs of the corresponding areas.

[0032] For example, if the first working area is a secondary central area, then the working point of the first working area is linked to the secondary central area of ​​the first working area; if the third working area is a base central area, then the working point of the third working area is linked to the main central area of ​​the third working area.

[0033] Reference Figure 5 As shown, further, combining the above-mentioned highly reliable optical cable communication method for emergency repair in confined spaces, a highly reliable optical cable communication device for emergency repair in confined spaces is proposed, comprising: The main control module is used to obtain the location of the communication hub based on the vector data of the safety area, obtain the location information of the main hub and the secondary hub based on the on-site basic dataset and the reference working point, determine the minimum area of ​​the main communication hub setting area based on the minimum space requirements for the deployment of emergency communication hub equipment, use the square root of the minimum area of ​​the main communication hub setting area as the area division threshold, set up the communication hub and form a ring network based on the location information of the main hub and the secondary hub, and link the working point with the communication hub of the corresponding area. The information acquisition module is used to acquire the emergency repair task list and real-time space survey data, and to acquire the on-site basic dataset based on the emergency repair task list and real-time space survey data. The region division module is used to construct a working distance matrix based on the Cartesian coordinates of all working points, obtain a reference working point based on the working distance matrix, obtain a first working area and a second working area based on the field basic dataset and the reference working point, and obtain a third working area based on the boundary between the first working area and the second working area. The display module interacts with the main control module and is used to output and display emergency repair task lists, real-time spatial survey data, reference working points, main central location information, and secondary central location information.

[0034] The main control module specifically includes: The control unit is used to determine the minimum area of ​​the main communication hub setting area based on the minimum space requirements for the deployment of emergency communication hub equipment, take the square root of the minimum area of ​​the main communication hub setting area as the area division threshold, set up the communication hub and form a ring network according to the main hub location information and the secondary hub location information, and link the working point with the communication hub of the corresponding area. An information receiving unit, together with an information acquisition module and a region division module, is used to receive data and transmit it to a region evaluation unit. The regional assessment unit is used to obtain the location of the communication hub based on the safety area vector data, and to obtain the location information of the main hub and the location information of the secondary hub based on the field basic dataset and the benchmark working point.

[0035] The information acquisition module specifically includes: The first acquisition unit is used to acquire an emergency repair task list and real-time spatial survey data, wherein the real-time spatial survey data represents the limited space corresponding to the emergency repair. The second acquisition unit is used to acquire the on-site basic dataset based on the emergency repair task list and real-time spatial survey data.

[0036] The region division module specifically includes: A spatial analysis unit is used to construct a working distance matrix based on the Cartesian coordinates of all working points, and to obtain a reference working point based on the working distance matrix. The region division unit is used to obtain a first working area and a second working area based on the on-site basic dataset and the benchmark working point, and to obtain a third working area based on the boundary between the first working area and the second working area.

[0037] In summary, the advantages of this invention are as follows: by constructing a working distance matrix and determining the benchmark working point, the distribution characteristics of working points in a limited space can be accurately quantified; by setting regional division thresholds and adaptive networking based on the central deployment requirements, flexible configuration of single / multiple communication central hubs can be achieved, adapting to the communication coverage needs of limited spaces of different sizes; by allocating coverage ranges and setting the positions of primary and secondary central hubs based on regional density feature values, optimal communication distance and balanced coverage of each working point can be achieved, ensuring the efficiency and stability of emergency communication and guaranteeing high reliability of communication.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A highly reliable optical cable communication method for emergency repair in confined spaces, characterized in that, include: Obtain an emergency repair task list and real-time spatial survey data, wherein the real-time spatial survey data represents the limited space corresponding to the emergency repair; Based on the emergency repair task list and real-time spatial survey data, a basic on-site dataset is obtained, which includes work point data and safe area vector data. Based on the on-site basic dataset, obtain the baseline operating point; Based on the minimum space requirements for the deployment of emergency communication hub equipment, determine the minimum area of ​​the main communication hub installation area; The square root of the minimum area of ​​the main communication hub setting area is used as the area division threshold. Based on the baseline working point and the region division threshold, it is determined whether to perform region division. If the maximum straight-line distance between the baseline working points does not exceed the region division threshold, then based on the safe region vector data, all positions in the safe region are traversed to obtain the straight-line distance between any position and all working points. The location corresponding to the minimum sum of straight-line distances from all working points in the safe zone is taken as the location of the communication hub, and all working points are connected to the communication hub. If the maximum straight-line distance between the reference working points exceeds the region division threshold, the main central location information and the secondary central location information are obtained based on the field basic dataset and the reference working points. Based on the location information of the main and secondary central hubs, a communication hub is set up and a ring network is formed, and the working points are linked to the communication hubs of the corresponding areas.

2. The highly reliable optical cable communication method for emergency repair in confined spaces according to claim 1, characterized in that, The process of obtaining a basic on-site dataset based on the emergency repair task list and real-time spatial survey data specifically includes: Based on the emergency repair task list, obtain the location information of the work points corresponding to the repair tasks; Based on real-time survey data, danger zones are marked; Based on the boundary of the danger zone, the area on site that is not marked as a danger zone and meets the conditions for optical cable deployment is designated as the initial safe zone; Based on the initial safety zone, scattered safety zones with an area of ​​less than 1 square meter are removed, and continuous on-site safety zone vector data is generated. Based on the work point location information, a Cartesian coordinate system is established, and the positions of all work points are converted into on-site Cartesian coordinates to generate a work point Cartesian coordinate dataset. The work point plane coordinate dataset is validated, and abnormal work points whose coordinates exceed the field boundary are removed; Based on the verified work point plane coordinate dataset, a unique identifier is assigned to each work point, the repair priority and equipment type information of the work point are recorded, and work point data is obtained. Based on the corrected working point data and safety zone vector data, a standardized field basic dataset is generated.

3. The highly reliable optical cable communication method for emergency repair in confined spaces according to claim 2, characterized in that, The step of obtaining the baseline operating point based on the on-site basic dataset specifically includes: Based on the working point plane coordinate dataset, extract the plane rectangular coordinates of all working points; Construct a working distance matrix based on the Cartesian coordinates of all working points; Wherein, the matrix elements of the working distance matrix represent the straight-line distance between the corresponding working points; Based on the Euclidean distance formula, obtain the value corresponding to each matrix element; Traverse all upper triangular elements of the distance matrix and take the two working points corresponding to the maximum value as the reference working points. The reference working points include the first reference working point and the second reference working point. The direction of the line connecting the two reference working points is taken as the direction of the main axis.

4. A highly reliable optical cable communication method for emergency repair in confined spaces according to claim 3, characterized in that, The process of obtaining the main central location information and the secondary central location information based on the on-site basic dataset and benchmark working point specifically includes: Based on the planar coordinates of the first reference working point, traverse the straight-line distances between all working points and the first reference point, sort them in ascending order of distance, and obtain the first distance sequence. Based on the first distance sequence, the average of the distance values ​​of the three nearest working points is used as the regional density feature value of the first benchmark working point; Based on the planar coordinates of the second reference working point, traverse the straight-line distances between all working points and the second reference point, sort them in ascending order of distance, and obtain the second distance sequence; Based on the second distance sequence, the distance values ​​of the three nearest working points are used as the regional density feature values ​​of the second reference working point; Based on the region division threshold, the half-side threshold of the region is obtained based on the maximum straight-line distance between two benchmark working points; The sum of the regional density eigenvalues ​​of the first reference working point and the regional density eigenvalues ​​of the first reference working point is used as the basic regional eigenvalue. The ratio of the regional density characteristic value of the first reference working point to the basic regional characteristic value is used as the regional coefficient of the first reference working point, and the ratio of the regional density characteristic value of the second reference working point to the basic regional characteristic value is used as the regional coefficient of the second reference working point. The product of the regional coefficient of the first reference working point and the regional half-side threshold is used as the half-side length of the first covering rectangle, and the product of the regional coefficient of the second reference working point and the regional half-side threshold is used as the half-side length of the second covering rectangle. Based on the half-side length of the first covering rectangle, and with the first reference working point as the center, a first covering rectangle with sides parallel to the main axis direction is generated to obtain the first working area; Based on the half-side length of the second covering rectangle, and with the second reference working point as the center, the second covering rectangle is generated in the same way to obtain the second working area; Based on the first working area, the second working area, and the interval area, obtain the main central location information and the secondary central location information.

5. A highly reliable optical cable communication method for emergency repair in confined spaces according to claim 4, characterized in that, The step of obtaining the main central location information and the secondary central location information based on the first working area, the second working area, and the interval area specifically includes: Based on the boundary between the first working area and the second working area, obtain the boundary information of the interval area; Based on the four boundaries of the interval region, extract the largest axis-aligned rectangle within the interval region to obtain the third working region, whose boundary is completely consistent with the boundary of the interval region. Use the geometric center of the third covering rectangle as the interval feature point; Based on the first reference working point, the second reference point, and the interval feature point, traverse the straight-line distances between all working points and the first reference point, the second reference point, and the interval feature point. Sum the straight-line distances between all working points and the first reference point as the first reference distance, sum the straight-line distances between all working points and the second reference point as the second reference distance, and sum the straight-line distances between all working points and the interval feature point as the third reference distance. The region corresponding to the minimum value among the first, second, and third reference distances is taken as the reference central region, and the remaining regions are taken as secondary central regions. Based on the baseline central region and the secondary central region, obtain the location information of the primary central region and the secondary central region.

6. A highly reliable optical cable communication method for emergency repair in confined spaces according to claim 5, characterized in that, The process of obtaining the primary central location information and secondary central location information based on the baseline central region and the secondary central region specifically includes: Based on the on-site safety zone vector data, the overlapping area between the reference central area and the safety zone is taken as the main central area; Traverse all positions in the main central region and obtain the straight-line distance between any position and all working points in the baseline central region; The position corresponding to the minimum sum of straight-line distances to all working points in the reference central region is taken as the main central position; If the reference central region and the safe region do not overlap, then all positions in the safe region are traversed to obtain the straight-line distance between any position and all working points in the reference central region. The position corresponding to the minimum sum of straight-line distances to all working points in the reference central region is taken as the main central position; Based on the secondary central region, traverse all positions within each secondary central region to obtain the straight-line distance between any position and all working points within that secondary central region; The position corresponding to the minimum sum of straight-line distances between each secondary central region and all working points within that secondary central region is taken as the sub-central position of that secondary central region.

7. A highly reliable optical fiber communication device for emergency repair in confined spaces, used to implement the communication method as described in any one of claims 1-6, characterized in that, include: The main control module is used to obtain the location of the communication hub based on the vector data of the safety area, obtain the location information of the main hub and the secondary hub based on the on-site basic dataset and the reference working point, determine the minimum area of ​​the main communication hub setting area based on the minimum space requirements for the deployment of emergency communication hub equipment, use the square root of the minimum area of ​​the main communication hub setting area as the area division threshold, set up the communication hub and form a ring network based on the location information of the main hub and the secondary hub, and link the working point with the communication hub of the corresponding area. The information acquisition module is used to acquire the emergency repair task list and real-time space survey data, and to acquire the on-site basic dataset based on the emergency repair task list and real-time space survey data. The region division module is used to construct a working distance matrix based on the Cartesian coordinates of all working points, obtain a reference working point based on the working distance matrix, obtain a first working area and a second working area based on the field basic dataset and the reference working point, and obtain a third working area based on the boundary between the first working area and the second working area. The display module interacts with the main control module and is used to output and display emergency repair task lists, real-time spatial survey data, reference working points, main central location information, and secondary central location information.

8. A highly reliable optical cable communication device for emergency repair in confined spaces according to claim 7, characterized in that, The main control module specifically includes: The control unit is used to determine the minimum area of ​​the main communication hub setting area based on the minimum space requirements for the deployment of emergency communication hub equipment, take the square root of the minimum area of ​​the main communication hub setting area as the area division threshold, set up the communication hub and form a ring network according to the main hub location information and the secondary hub location information, and link the working point with the communication hub of the corresponding area. An information receiving unit interacts with an information acquisition module and a region division module to receive data and transmit it to a region evaluation unit. The regional assessment unit is used to obtain the location of the communication hub based on the safety area vector data, and to obtain the location information of the main hub and the location information of the secondary hub based on the field basic dataset and the benchmark working point.

9. A highly reliable optical cable communication device for emergency repair in confined spaces according to claim 7, characterized in that, The information acquisition module specifically includes: The first acquisition unit is used to acquire an emergency repair task list and real-time spatial survey data, wherein the real-time spatial survey data represents the limited space corresponding to the emergency repair. The second acquisition unit is used to acquire the on-site basic dataset based on the emergency repair task list and real-time spatial survey data.

10. A highly reliable optical cable communication device for emergency repair in confined spaces according to claim 7, characterized in that, The region division module specifically includes: A spatial analysis unit is used to construct a working distance matrix based on the Cartesian coordinates of all working points, and to obtain a reference working point based on the working distance matrix. The region division unit is used to obtain a first working area and a second working area based on the on-site basic dataset and the benchmark working point, and to obtain a third working area based on the boundary between the first working area and the second working area.

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