Fuel gas pipeline data acquisition method and system based on feature point data

Abstract

The invention discloses a fuel gas pipeline data acquisition method and system based on feature point data. The method comprises the following steps: determining coordinate data of a main riser in an overground public pipeline according to node information of an underground pipeline of a target building out of the ground; collecting feature point information of an overground public pipeline according to the coordinate data of the main vertical pipe; and according to the feature point information, constructing a two-dimensional tree structure chart and / or a three-dimensional model of the aboveground public pipeline of the target building. The main vertical pipe is used as a starting point, and potential safety hazards of high-altitude equipment erection are avoided. Secondly, two-dimensional mapping and / or three-dimensional modeling are / is carried out based on the coordinate data of the main stand pipe and the actually-collected feature point information of the overground public pipeline, the current state of the pipeline can be reflected, and the problem of data lag caused by dependence on historical pipeline data is avoided. In addition, through hierarchical acquisition from the main vertical pipe to other feature points, the trend, key nodes and pipeline branch logic of the pipeline can be visually and completely presented, and patrol leakage of patrol personnel is avoided.

Description

Technical Field

[0001] This invention relates to the field of pipeline safety management technology, and in particular to a method and system for acquiring gas pipeline data based on feature point data. Background Technology

[0002] The urban natural gas transmission and distribution system refers to the entire system consisting of all facilities from the gate station to the user, including the gate station or gas source plant compressor station, gas storage facilities, pressure regulating devices, transmission and distribution pipelines, metering devices, management facilities, monitoring systems, etc.

[0003] Above-ground public pipelines, as the end of the transmission and distribution pipeline system, are the pipelines between outdoor gas distribution branch pipes (the part of the buried pipeline after it emerges above ground) and the main gas inlet valve of the user's (e.g., residential or commercial) indoor gas inlet pipe (when there is no valve, this refers to the point 1.0m above the indoor ground level). Key equipment on the pipeline includes: outlet control valves, pressure regulating boxes, branch pipe control valves, and vent valves. Currently, there are no industry standards for collecting data on above-ground public pipelines, and most gas companies suffer from severe deficiencies in basic data on their above-ground public pipelines. By developing a simple and easy-to-use data collection method for above-ground public pipeline facilities, firstly, it can help gas companies supplement their basic data on above-ground public pipelines in a more economical way. Secondly, it can better conduct pipeline inspections and patrols based on the collected data, avoiding missed inspections. Furthermore, in the event of an emergency repair on above-ground pipelines, it can more accurately locate the valves that need to be closed, narrowing down the scope of affected users and thus improving the quality of service provided by the company.

[0004] Currently, pipeline data acquisition technologies in the industry mainly fall into the following two categories:

[0005] One approach involves collecting the coordinates and elevation information of various pipeline nodes (such as welds, elbows, and tees) using RTK (Real-time kinematic) real-time dynamic carrier phase differential technology or total station surveying, according to industrial pipeline data acquisition requirements. The pipeline's topology and routing information are then established based on a GIS (Geographic Information System). This method places certain demands on the personnel; the coordinate acquisition equipment needs to be placed directly above the pipeline, but most public pipelines are elevated above ground, posing a risk of personnel working at height.

[0006] Another method is to import the pipeline routes from the as-built drawings. This method requires certain user skills, as it does not require pipeline coordinate information but uses the building's structural floor plan as a reference. However, pipeline companies may have constructed their pipelines a long time ago, and the pipeline routes may differ significantly from the as-built documentation. Furthermore, it is difficult to link the above-ground pipeline data in the as-built documentation with underground pipe network data and customer information, and the amount of searching for building structural floor plans is enormous, consuming considerable manpower and time.

[0007] Therefore, existing technologies still need improvement and development. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a gas pipeline data acquisition method and system based on feature point data, which addresses the above-mentioned deficiencies of the existing technology and aims to solve the problems of safety risks caused by high-altitude operations and the lag in coordinate data acquisition in the existing pipeline data acquisition technology.

[0009] The technical solution adopted by this invention to solve the problem is as follows:

[0010] In a first aspect, embodiments of the present invention provide a method for acquiring gas pipeline data based on feature point data, the method comprising:

[0011] Obtain the node information of underground pipelines emerging from the ground of the target building, and determine the coordinate data of the main riser in the above-ground public pipeline based on the node information;

[0012] Based on the coordinate data of the main riser, collect feature point information of the above-ground public pipeline;

[0013] Based on the feature point information, construct a two-dimensional tree structure diagram and / or a three-dimensional model of the above-ground public pipelines of the target building.

[0014] In one implementation, feature point information of the above-ground public pipeline is collected based on the coordinate data of the main riser, including:

[0015] The starting point for data collection is determined based on the coordinate data of the main riser, and the pipeline route of the above-ground public pipeline is identified based on the starting point for data collection.

[0016] Obtain usage demand information, identify various feature points of the above-ground public pipeline based on the pipeline route and the usage demand information, and collect attribute information of each feature point;

[0017] Feature point information is obtained based on the attribute information of each feature point.

[0018] In one embodiment, the feature point type includes: the main riser, and at least one of the following: ground outlet valve, building pressure regulating box, unit control valve, venting terminal, ring pipe, unit branch riser, and building.

[0019] In one implementation, various feature points of the above-ground public pipeline are identified based on the pipeline route and the usage demand information, and attribute information of each feature point is collected, including:

[0020] When the identified feature points include multiple unit branch risers, the attribute information of the feature points corresponding to the building is collected for each unit branch riser.

[0021] In one implementation, a three-dimensional model of the above-ground public pipelines of the target building is constructed based on the feature point information, including:

[0022] Based on the feature point information, the coordinates of the main riser, the direction of the above-ground public pipeline of the main riser, the floor and length of the ring pipe, and the length and floor of the unit branch riser are extracted to obtain the first modeling data;

[0023] Obtain the architectural floor plan of the target building, and set the orientation of the ring pipe and the unit branch riser according to the architectural floor plan to obtain the second modeling data;

[0024] Based on the first modeling data and the second modeling data, a three-dimensional model of the above-ground public pipeline is constructed.

[0025] In one embodiment, the method further includes:

[0026] Obtain the above-ground public pipeline data of the target building;

[0027] A topology analysis is performed based on the above-ground public pipeline data to obtain the topology structure; wherein, the topology structure is a tree structure with the main riser as the root node and the venting end as the leaf node;

[0028] Based on the topology, the data quality of the two-dimensional tree structure diagram and / or the three-dimensional model is verified.

[0029] In one embodiment, the method further includes:

[0030] When a gas leak occurs, identify the target feature point corresponding to the gas leak point in the above-ground public pipeline;

[0031] Based on at least one of the topology, the two-dimensional tree structure diagram, and the three-dimensional model, the upstream valve of the target feature point is located to obtain a list of valves used to control gas leakage.

[0032] Based on the valve list, determine the control valve that is closest to the target feature point;

[0033] Based on at least one of the topology, the two-dimensional tree structure diagram, and the three-dimensional model, locate the downstream unit branch risers affected by the control valve to obtain a list of affected unit branch risers;

[0034] Based on the unit branch riser list, obtain the affected building user information, and carry out emergency scavenging based on the affected building user information.

[0035] Secondly, embodiments of the present invention also provide a gas pipeline data acquisition system based on feature point data, the system comprising:

[0036] The acquisition module is used to acquire the node information of the underground pipelines of the target building that emerge from the ground, and to determine the coordinate data of the main riser in the above-ground public pipeline based on the node information.

[0037] The acquisition module is used to acquire feature point information of the above-ground public pipeline based on the coordinate data of the main riser.

[0038] The construction module is used to construct a two-dimensional tree structure diagram and / or a three-dimensional model of the above-ground public pipelines of the target building based on the feature point information.

[0039] Thirdly, embodiments of the present invention also provide a terminal, the terminal including a memory and one or more processors; the memory stores one or more programs; the programs include instructions for executing the gas pipeline data acquisition method based on feature point data as described above; the processor is used to execute the programs.

[0040] Fourthly, embodiments of the present invention also provide a computer-readable storage medium having stored thereon a plurality of instructions adapted to be loaded and executed by a processor to implement the steps of the gas pipeline data acquisition method based on feature point data as described above.

[0041] The beneficial effects of this invention are as follows: In this embodiment, the node information of underground pipelines emerging from the ground of a target building is obtained. Based on this node information, the coordinate data of the main riser in the above-ground public pipeline is determined. Based on the coordinate data of the main riser, feature point information of the above-ground public pipeline is collected. Based on the feature point information, a two-dimensional tree structure diagram and / or a three-dimensional model of the above-ground public pipeline of the target building is constructed. This invention uses the main riser as the map positioning point for the above-ground public pipeline, eliminating the need to collect coordinate data of pipe fitting nodes after the main riser, thus avoiding the safety hazards of installing coordinate acquisition equipment at high altitudes. Secondly, this invention performs two-dimensional mapping and / or three-dimensional modeling based on the coordinate data of the main riser and the actually collected feature point information of the above-ground public pipeline, which can directly reflect the current state of the pipeline, avoiding the problem of relying on the coordinate data collection results of the pipeline. Furthermore, through hierarchical collection from the main riser to other feature points, the pipeline's direction, key nodes, and pipeline branching logic can be presented intuitively and completely. Combined with setting RFID electronic tags at key nodes, patrol personnel can clock in based on these tags, further preventing missed patrols. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a flowchart illustrating the gas pipeline data acquisition method based on feature point data provided in an embodiment of the present invention.

[0044] Figure 2 This is a schematic diagram of the above-ground public pipeline looping downwards provided in an embodiment of the present invention.

[0045] Figure 3 This is a schematic diagram of the above-ground public pipeline ring going upwards, provided in an embodiment of the present invention.

[0046] Figure 4 This is a schematic diagram of the direct upward flow of the above-ground public pipeline provided in an embodiment of the present invention.

[0047] Figure 5 This is a two-dimensional tree-structure diagram of the feature points of the above-ground public pipeline provided in an embodiment of the present invention.

[0048] Figure 6 This is a diagram showing the relationship between the unit branch riser and the building provided in an embodiment of the present invention.

[0049] Figure 7 This is a schematic diagram of a gas pipeline data acquisition system based on feature point data provided in an embodiment of the present invention.

[0050] Figure 8 This is a schematic diagram of the terminal provided in the embodiment of the present invention. Detailed Implementation

[0051] This invention discloses a method and system for acquiring gas pipeline data based on feature point data. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention.

[0052] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0053] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0054] To address the aforementioned deficiencies in existing technologies, this invention provides a gas pipeline data acquisition method based on feature point data. The method acquires node information of underground pipelines emerging from the ground in a target building, determines the coordinates of the main riser in the above-ground public pipeline based on this node information, collects feature point information of the above-ground public pipeline based on the coordinates of the main riser, and constructs a two-dimensional tree structure diagram and / or a three-dimensional model of the above-ground public pipeline of the target building based on the feature point information. This invention uses the main riser as the starting point, which is typically located near the ground, avoiding the safety hazards of high-altitude equipment installation. Secondly, this invention performs two-dimensional mapping and / or three-dimensional modeling based on the coordinate data of the main riser and the actual collected feature point information of the above-ground public pipeline, directly reflecting the current state of the pipeline and avoiding data lag issues caused by relying on historical pipeline data. Furthermore, through hierarchical acquisition from the main riser to other feature points, the pipeline's route, key nodes, and branching logic can be presented intuitively and completely, preventing inspection personnel from missing any points during their patrols.

[0055] like Figure 1 As shown, the method specifically includes the following steps:

[0056] Step S100: Obtain the node information of the underground pipelines of the target building that emerge from the ground, and determine the coordinate data of the main riser in the above-ground public pipeline based on the node information.

[0057] Specifically, the main riser is the core trunk of the above-ground public pipeline system. It is usually a vertical or near-vertical pipe that is responsible for delivering gas from underground branch pipes to users on each floor. The bottom starting point of the main riser coincides with or is adjacent to the underground outlet node. Therefore, the coordinate data of the main riser can be obtained from the outlet node information of the underground pipeline of the target building.

[0058] Step S200: Collect feature point information of the above-ground public pipeline based on the coordinate data of the main riser.

[0059] Specifically, the main riser, as the starting point of the above-ground public pipeline, has its coordinate data determined by the underground pipeline's surface exit nodes, forming the spatial origin of the entire above-ground pipeline system. This embodiment uses the main riser as the starting point and systematically collects information from key nodes along the pipeline route, thus obtaining the feature point information of the above-ground public pipeline. All feature point information is collected based on the main riser, ensuring data continuity within a unified coordinate system.

[0060] In one implementation, feature point information of the above-ground public pipeline is collected based on the coordinate data of the main riser, including:

[0061] The starting point for data collection is determined based on the coordinate data of the main riser, and the pipeline route of the above-ground public pipeline is identified based on the starting point for data collection.

[0062] Obtain usage demand information, identify various feature points of the above-ground public pipeline based on the pipeline route and the usage demand information, and collect attribute information of each feature point;

[0063] Feature point information is obtained based on the attribute information of each feature point.

[0064] Specifically, starting from the main riser, data is collected sequentially according to the direction of the public pipeline to ensure the orderly collection path and avoid omissions or duplications. If the main riser extends vertically upwards, the pipeline direction is vertical; if a branch pipeline extends horizontally from the main riser, the pipeline direction is horizontal. Furthermore, different business scenarios have different requirements for feature points. This embodiment also analyzes usage requirements information to identify feature points in a business-oriented manner. In other words, not all nodes need to be identified. For the current business scenario, key nodes within that scenario can be identified specifically to obtain feature point information highly relevant to that scenario. For example, in an inspection and maintenance scenario, nodes prone to corrosion or third-party damage (such as valve interfaces) need to be collected; in an emergency rescue scenario, the valve control range and vent valve location need to be clearly defined. Feature point information includes the attribute information corresponding to each identified feature point, such as coordinate data, feature point type, maintenance records, etc.

[0065] In one implementation, the feature point type includes: the main riser, and at least one of the following: ground outlet valve, building pressure regulating box, unit control valve, venting terminal, ring pipe, unit branch riser, and building.

[0066] Specifically, above-ground public gas pipelines are mostly laid along the building structure of the gas supply building. After emerging from the ground, underground gas pipelines are mostly laid vertically upwards along the building's exterior walls, with structural forms including lower rings running upwards and upper rings running downwards. Furthermore, the pipeline route may differ from the as-built documentation due to interior decoration work. Therefore, before establishing a two-dimensional tree structure diagram and / or a three-dimensional model of the above-ground public gas pipelines, it is necessary to identify multiple characteristic points within the pipeline system. These characteristic points include: main risers, as well as at least one of the following: outlet valves, building pressure regulating boxes, unit control valves, venting terminals, ring pipes, unit branch risers, and building-specific features.

[0067] Main riser: refers to the part of the buried pipeline that emerges from the ground. Its attributes include: associated exit point (the node where the underground pipeline emerges from the ground, which has X and Y coordinate information in the gas company's GIS system), the route of the above-ground public pipeline (e.g., upper ring down, lower ring up, direct up), location description, pipe diameter, and pipeline pressure.

[0068] Outlet valve: Usually installed on the main riser. Its attributes include: valve on / off status, specifications, etc.

[0069] Building pressure regulating box: plays a role in pressure regulation during gas transmission. Its attributes include: the floor it is located on.

[0070] Unit control valve: This refers to the valve on the branch riser of the control unit. When the valve is closed, it may only affect the gas supply to a specific unit in that building. Its attributes include: valve open / closed status and floor level.

[0071] Discharge end: refers to the end of a public pipeline above ground.

[0072] Ring pipe: refers to the section of pipe perpendicular to the main riser or unit branch risers, also known as a horizontal ring pipe, which is usually parallel to the ground. Its attributes include: pipe length, pipe diameter, and floor level.

[0073] Unit branch riser: This refers to a gas supply pipe (before the gas meter valve of a specific unit in a building) that supplies gas to that unit, or it can be a gas supply pipe (before the gas meter valve of a non-residential unit). Its attributes include: associated building and pipe diameter.

[0074] Building: This refers to the set of end users supplied with gas by the unit's branch riser, including residential and non-residential users. Its attributes include building name, set of residential user apartment numbers, set of non-residential user apartment numbers, location information, and number of floors. The building data collection objects are created based on the on-site building names and the unit's branch riser gas supply situation. For example, if the unit's branch riser supplies gas to two buildings on-site, then two buildings need to be created; that is, the subsequent generated 2D tree structure diagram and / or 3D model of the above-ground public pipeline will contain nodes corresponding to these two buildings.

[0075] In one implementation, various feature points of the above-ground public pipeline are identified based on the pipeline route and the usage demand information, and attribute information of each feature point is collected, including:

[0076] When the identified feature points include multiple unit branch risers, the attribute information of the feature points corresponding to the building is collected for each unit branch riser.

[0077] Specifically, in residential or commercial buildings, above-ground public pipelines branch off from the main riser (main pipeline) into several branches. Each branch corresponds to a unit (e.g., Unit 1, Unit 2) or an independent building, and is called a unit branch riser. When a target building has multiple unit branch risers, it is necessary to distinguish the building or unit corresponding to each riser and collect its unique feature point information to achieve hierarchical pipeline topology, correlation between pipeline data and downstream users (e.g., residents within a unit), and location of faulty units in emergency scenarios.

[0078] Step S300: Based on the feature point information, construct a two-dimensional tree structure diagram and / or a three-dimensional model of the above-ground public pipelines of the target building.

[0079] Specifically, this embodiment uses the main riser and actual collected feature point information such as outlet valves, building pressure regulating boxes, unit control valves, venting terminals, loop pipes, unit branch risers, and building features to construct a two-dimensional display diagram and / or a three-dimensional model of the above-ground public pipeline. The two-dimensional display diagram can be presented in a tree structure, resulting in a two-dimensional tree structure diagram. For example, starting from the end of the buried pipeline / main riser, all feature points are connected to form a tree structure, with the venting terminal being the leaf node of the tree structure. This embodiment does not rely on precise coordinate measurement of the pipeline, but uses feature points to form a two-dimensional tree structure diagram and / or a three-dimensional model of the above-ground public pipeline, further reducing the skill level required of employees and enabling ordinary personnel to efficiently and accurately complete data collection during pipeline inspections.

[0080] In one implementation, a three-dimensional model of the above-ground public pipeline of the target building is constructed based on the feature point information, including:

[0081] Based on the feature point information, the coordinates of the main riser, the direction of the above-ground public pipeline of the main riser, the floor and length of the ring pipe, and the length and floor of the unit branch riser are extracted to obtain the first modeling data;

[0082] Obtain the architectural floor plan of the target building, and set the orientation of the ring pipe and the unit branch riser according to the architectural floor plan to obtain the second modeling data;

[0083] Based on the first modeling data and the second modeling data, a three-dimensional model of the above-ground public pipeline is constructed.

[0084] Specifically, the modeling process involves secondary processing of feature point information. The following key parameters are extracted from the previously collected feature point information: the coordinates of the main riser, the direction of the main riser's above-ground public pipeline, the floor and pipe length of the ring riser, and the pipe length and floor of the unit branch riser. Using the main riser coordinates as the model origin, the first modeling data—main riser-floor ring riser-unit riser—is formed using the floor and length parameters of the ring riser and unit riser. The building floor plan can be obtained from the target building's CAD floor plan, BIM model, or digital aerial photograph, containing structural information such as floor outlines, wall locations, door and window coordinates, and stairwells. The specific laying location of the ring riser within the floor is determined using the building floor plan, for example, by locating it using the wall axis coordinates in the building floor plan. Furthermore, the location of the riser on the building's exterior facade is clarified using the building floor plan, for example, by locating it using the exterior wall outline coordinates in the building floor plan. The locations of the located ring riser and unit branch riser are used as the second modeling data. The first and second modeling data can be spatially calibrated together. Therefore, both types of modeling data are input into the 3D modeling software. Using the coordinates of the main riser as the origin, 3D line segments (vertical or horizontal) of the main riser are drawn according to the direction parameters. Based on the floor and length of the ring pipe, horizontal line segments are drawn on the corresponding height plane according to the orientation parameters (such as along the wall). Vertical line segments are extended upwards from the branch point of the ring pipe according to the floor range, and the unit number and floor correspondence are labeled to generate a 3D model of the above-ground public pipeline. Furthermore, material textures can be assigned to the pipeline model, and feature point attributes (such as valve type, number of users) can be embedded into the nodes of the model to form an interactive 3D digital model.

[0085] For example, based on the collected feature point data, a two-dimensional tree structure diagram of above-ground public pipelines can be automatically constructed. Based on the coordinates of the main riser's associated exit point and the building floor plan, a three-dimensional model of the above-ground public pipelines can be generated. The building height is derived from the number of floors multiplied by the floor height of each floor (usually 3 meters), thus completing the three-dimensional model of the building. The three-dimensional modeling mainly relies on the coordinates of the main riser, the route of the above-ground public pipelines from the main riser, the floor where the loop riser is located, the length of the loop riser, the length of the unit branch riser, and the floor where the unit branch riser is located. The orientation of the loop riser and the unit branch riser need to be manually set with reference to the building floor plan.

[0086] In one implementation, the method further includes:

[0087] Obtain the above-ground public pipeline data of the target building;

[0088] A topology analysis is performed based on the above-ground public pipeline data to obtain the topology structure; wherein, the topology structure is a tree structure with the main riser as the root node and the venting end as the leaf node;

[0089] Based on the topology, the data quality of the two-dimensional tree structure diagram and / or the three-dimensional model is verified.

[0090] Specifically, topological analysis is performed on the above-ground public pipeline data. The main riser is used as the root of a tree structure, and the structure is hierarchically divided according to pipeline direction. The main riser branches into unit risers (first-level branches), and unit risers further branch into branch pipes on each floor (second-level branches). Finally, the venting end (e.g., a rooftop vent valve) is used as the leaf node, forming a root-branch-leaf tree structure. This tree structure allows for reverse verification of two-dimensional tree diagrams and / or three-dimensional models. For example, logical loop detection can be performed: the tree structure should be a directed acyclic graph; if a loop exists (e.g., a branch pipe connecting to a riser in reverse), the data is considered incorrect. For instance, if the flow direction of a branch pipe is labeled as from a floor branch pipe to a unit riser, this conflicts with the flow direction logic of the tree structure, triggering manual inspection. Hierarchical integrity verification can also be performed: leaf nodes must be venting ends; if a branch pipe is not connected to a vent valve but is used as a leaf node, data is indicated as missing.

[0091] For example, the routing topology of above-ground public pipeline feature points starting from the main riser is a tree structure, with the main riser as the root node and the radiating ends as leaf nodes (e.g., ...). Figure 5 (As shown). One side of the main riser connects to the underground gas transmission and distribution pipeline system, and the other side connects to the above-ground pipeline system. The routing of above-ground public pipelines is mostly divided into three types: upper ring down, lower ring up, and direct up.

[0092] The route of above-ground public pipelines is either a downward-running upper ring or an upward-running lower ring. The typical sequence of the pipeline topology is: main riser, outlet valve, building pressure regulating box, ring pipe, unit control valve, unit branch riser, and vent terminal. Figure 2 , Figure 3 As shown. Among them, the number of outlet valves and building pressure regulating boxes may be 1 or 0, the number of ring pipes may be 1 or more, the number of unit control valves may be 0 or more, and the number of unit branch risers and venting terminals may be 1 or more.

[0093] When the above-ground public pipeline runs directly upwards, the pipeline topology typically follows this sequence: main riser, outlet valve, building pressure regulating box, unit branch riser, and vent terminal. Figure 4 As shown. The number of outlet valves and building pressure regulating boxes may be 1 or 0, and the number of unit branch risers and vent terminals may be 1 or 0. A building can only be associated with a unit branch riser (e.g., Figure 6 As shown in the figure, the building objects include 0 or more resident users and 0 or more non-resident users.

[0094] Based on the structural characteristics of the two pipeline routes mentioned above, the main riser can connect to the following characteristic points: outgoing valves, loops, and unit branch risers. There can be one or zero outgoing valves, and zero or more loops. If there are multiple unit branch risers, then loops must exist. Buildings do not directly participate in the topology analysis of above-ground public pipeline data; the associated buildings are obtained through the affected unit branch pipes identified in the topology analysis.

[0095] In one implementation, changes to the public pipelines above ground in the complex can be verified and updated during the gas company's annual pipeline inspection and patrol operations.

[0096] In one implementation, the method further includes:

[0097] When a gas leak occurs, identify the target feature point corresponding to the gas leak point in the above-ground public pipeline;

[0098] Based on at least one of the topology, the two-dimensional tree structure diagram, and the three-dimensional model, the upstream valve of the target feature point is located to obtain a list of valves used to control gas leakage.

[0099] Based on the valve list, determine the control valve that is closest to the target feature point;

[0100] Based on at least one of the topology, the two-dimensional tree structure diagram, and the three-dimensional model, locate the downstream unit branch risers affected by the control valve to obtain a list of affected unit branch risers;

[0101] Based on the unit branch riser list, obtain the affected building user information, and carry out emergency scavenging based on the affected building user information.

[0102] Specifically, by using data and topology of above-ground public pipelines, it is possible to accurately analyze which above-ground valves need to be closed and the number of affected users during emergency repair operations of above-ground public pipelines, providing data support for gas companies to accurately push gas outage notices to users.

[0103] For example, after identifying the feature point where a gas leak occurs in a public pipeline above ground, a tree structure is used to find the upstream valves (such as outlet valves or unit control valves) of that feature point, thus obtaining a list of valves that can control the gas leak. Then, the control valve closest to the feature point where the gas leak occurs, and a list of all downstream unit branch risers affected by that valve, are calculated. Finally, the affected building and user information is obtained from the list of affected unit branch risers.

[0104] The advantages of this invention are:

[0105] 1. Compared with known data acquisition technologies for above-ground public pipelines, a set of data acquisition feature points for above-ground public pipelines has been defined. This provides gas companies with more efficient and economical data elements for data acquisition and subsequent maintenance and updates of above-ground public pipeline data. The data acquisition feature points include: main riser, outlet valve, building pressure regulating box, unit control valve, vent terminal, loop pipe, unit branch riser, and building. These feature points can be combined according to the gas company's usage needs. For example, if the focus is on emergency repairs, the feature points can be further simplified to main riser, outlet valve, unit control valve, and building, where the building is associated with either the unit control valve or the outlet valve. If the focus is on pipeline risk assessment or 3D visualization, the acquisition feature points are main riser, loop pipe, unit branch riser, and building.

[0106] 2. Compared with known above-ground public pipeline data collection technologies, building feature points designed based on unit branch risers and actual building names can more accurately and efficiently analyze the situation of affected users and issue gas outage notices during gas company emergency repair operations. For example, in a certain community, a building has four unit branch risers, corresponding to unit types A, B, C, and D respectively. When collecting building feature points, data is collected according to unit type A, unit type B, unit type C, and unit type D.

[0107] 3. Compared with known data acquisition technologies for above-ground public pipelines, the data acquisition work of this invention does not rely on coordinate measurement, simplifies the complex structure of above-ground public pipeline systems, and constructs a tree-like routing structure with the main riser as the root node. Each main riser is connected to the underground gas pipeline system, providing more accurate and efficient valve closure analysis for gas emergency rescue.

[0108] 4. Compared with known data acquisition technologies for above-ground public pipelines, this invention can generate two-dimensional / three-dimensional models of above-ground public pipeline data in real time on mobile terminals based on feature point data structures during the data acquisition process, realizing data visualization for gas company employees during the data acquisition process. This data also provides support for the visualization maps in subsequent inspections, emergency repairs, and technical upgrades of above-ground public pipelines.

[0109] Based on the above embodiments, the present invention also provides a gas pipeline data acquisition system based on feature point data, such as... Figure 7 As shown, the system includes:

[0110] The acquisition module 01 is used to acquire the node information of the underground pipelines of the target building that emerge from the ground, and to determine the coordinate data of the main riser in the above-ground public pipeline based on the node information.

[0111] The acquisition module 02 is used to acquire feature point information of the above-ground public pipeline based on the coordinate data of the main riser.

[0112] The construction module 03 is used to construct a two-dimensional tree structure diagram and / or a three-dimensional model of the above-ground public pipelines of the target building based on the feature point information.

[0113] Specifically, the system platform in this embodiment can consist of a mobile terminal and a backend management terminal, with the mobile terminal responsible for collecting data on above-ground public pipelines. The main riser of the above-ground public pipeline is the starting point of the pipeline and also connects to the exit point of the underground pipeline. During system design, considering the characteristics of the main riser, the nodes of the underground pipelines exiting the ground in the gas company's GIS system are imported into the data collection system platform as initial data, and the main riser is assigned X and Y coordinate attributes. The system platform combines the X and Y coordinates with general navigation software, allowing data collection personnel to navigate to the site and conduct data collection. During data collection, the pipeline direction of the above-ground public pipeline is determined, and information on the main riser, exit valves, building pressure regulating boxes, unit control valves, venting terminals, loop pipes, unit branch risers, and building feature points is collected step by step. Simultaneously, the mobile terminal can assist in generating a two-dimensional planar tree-like schematic diagram of the above-ground public pipeline and assist in verifying data quality based on the data topology of the above-ground public pipeline.

[0114] Based on the above embodiments, the present invention also provides a terminal, the principle block diagram of which can be as follows: Figure 8As shown, the terminal includes a processor, memory, network interface, and display screen connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides the environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface is used to communicate with external terminals via a network connection. When the computer program is executed by the processor, it implements a gas pipeline data acquisition method based on feature point data. The display screen can be an LCD screen or an e-ink screen.

[0115] Those skilled in the art will understand that Figure 8 The schematic diagram shown is merely a partial structural diagram related to the present invention and does not constitute a limitation on the terminal to which the present invention is applied. A specific terminal may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0116] In one implementation, the terminal's memory stores one or more programs, and these programs are configured to be executed by one or more processors, and the programs contain instructions for performing a gas pipeline data acquisition method based on feature point data.

[0117] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided by this invention can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM), etc.

[0118] In summary, this invention discloses a method and system for acquiring gas pipeline data based on feature point data. The method acquires the node information of underground pipelines emerging from the ground in a target building, determines the coordinate data of the main riser in the above-ground public pipeline based on the node information, collects feature point information of the above-ground public pipeline based on the coordinate data of the main riser, and constructs a two-dimensional tree structure diagram and / or a three-dimensional model of the above-ground public pipeline of the target building based on the feature point information. This invention uses the main riser as the starting point, which is usually located near the ground, avoiding the safety hazards of high-altitude equipment installation. Secondly, this invention performs two-dimensional mapping and / or three-dimensional modeling based on the coordinate data of the main riser and the actual collected feature point information of the above-ground public pipeline, which can directly reflect the current state of the pipeline and avoid the data lag problem caused by relying on historical pipeline data. Furthermore, through hierarchical acquisition from the main riser to other feature points, the pipeline's direction, key nodes, and branching logic can be presented intuitively and completely, preventing inspection personnel from missing any points during their patrols.

[0119] It should be understood that the application of the present invention is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A method for acquiring gas pipeline data based on feature point data, characterized in that, The method includes: Obtain the node information of underground pipelines emerging from the ground of the target building, and determine the coordinate data of the main riser in the above-ground public pipeline based on the node information; Based on the coordinate data of the main riser, collect feature point information of the above-ground public pipeline; Based on the feature point information, construct a two-dimensional tree structure diagram and / or a three-dimensional model of the above-ground public pipelines of the target building.

2. The gas pipeline data acquisition method based on feature point data according to claim 1, characterized in that, Based on the coordinate data of the main riser, feature point information of the above-ground public pipeline is collected, including: The starting point for data collection is determined based on the coordinate data of the main riser, and the pipeline route of the above-ground public pipeline is identified based on the starting point for data collection. Obtain usage demand information, identify various feature points of the above-ground public pipeline based on the pipeline route and the usage demand information, and collect attribute information of each feature point; Feature point information is obtained based on the attribute information of each feature point.

3. The gas pipeline data acquisition method based on feature point data according to claim 2, characterized in that, The feature point types include: the main riser, and at least one of the following: ground outlet valve, building pressure regulating box, unit control valve, venting terminal, ring pipe, unit branch riser, and building.

4. The gas pipeline data acquisition method based on feature point data according to claim 2, characterized in that, Based on the pipeline route and usage demand information, identify various feature points of the above-ground public pipeline, and collect attribute information of each feature point, including: When the identified feature points include multiple unit branch risers, the attribute information of the feature points corresponding to the building is collected for each unit branch riser.

5. The gas pipeline data acquisition method based on feature point data according to claim 1, characterized in that, Based on the feature point information, a three-dimensional model of the above-ground public pipelines of the target building is constructed, including: Based on the feature point information, the coordinates of the main riser, the direction of the above-ground public pipeline of the main riser, the floor and length of the ring pipe, and the length and floor of the unit branch riser are extracted to obtain the first modeling data; Obtain the architectural floor plan of the target building, and set the orientation of the ring pipe and the unit branch riser according to the architectural floor plan to obtain the second modeling data; Based on the first modeling data and the second modeling data, a three-dimensional model of the above-ground public pipeline is constructed.

6. The gas pipeline data acquisition method based on feature point data according to claim 5, characterized in that, The method further includes: Obtain the above-ground public pipeline data of the target building; A topology analysis is performed based on the above-ground public pipeline data to obtain the topology structure; wherein, the topology structure is a tree structure with the main riser as the root node and the venting end as the leaf node; Based on the topology, the data quality of the two-dimensional tree structure diagram and / or the three-dimensional model is verified.

7. The gas pipeline data acquisition method based on feature point data according to claim 6, characterized in that, The method further includes: When a gas leak occurs, identify the target feature point corresponding to the gas leak point in the above-ground public pipeline; Based on at least one of the topology, the two-dimensional tree structure diagram, and the three-dimensional model, the upstream valve of the target feature point is located to obtain a list of valves used to control gas leakage. Based on the valve list, determine the control valve that is closest to the target feature point; Based on at least one of the topology, the two-dimensional tree structure diagram, and the three-dimensional model, locate the downstream unit branch risers affected by the control valve to obtain a list of affected unit branch risers; Based on the unit branch riser list, obtain the affected building user information, and carry out emergency scavenging based on the affected building user information.

8. A gas pipeline data acquisition system based on feature point data, characterized in that, The system includes: The acquisition module is used to acquire the node information of the underground pipelines of the target building that emerge from the ground, and to determine the coordinate data of the main riser in the above-ground public pipeline based on the node information. The acquisition module is used to acquire feature point information of the above-ground public pipeline based on the coordinate data of the main riser. The construction module is used to construct a two-dimensional tree structure diagram and / or a three-dimensional model of the above-ground public pipelines of the target building based on the feature point information.

9. A terminal, characterized in that, The terminal includes a memory and one or more processors; the memory stores one or more programs; the programs contain instructions for executing the gas pipeline data acquisition method based on feature point data as described in any one of claims 1-7; the processor is used to execute the programs.

10. A computer-readable storage medium storing a plurality of instructions thereon, characterized in that, The instructions are applicable to be loaded and executed by a processor to implement the steps of the gas pipeline data acquisition method based on feature point data as described in any one of claims 1-7.

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