CN113470142B - Intelligent generation and display method for low-voltage point location and line path vector diagram in distribution network - Google Patents
Intelligent generation and display method for low-voltage point location and line path vector diagram in distribution network Download PDFInfo
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- CN113470142B CN113470142B CN202110695730.8A CN202110695730A CN113470142B CN 113470142 B CN113470142 B CN 113470142B CN 202110695730 A CN202110695730 A CN 202110695730A CN 113470142 B CN113470142 B CN 113470142B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/20—Drawing from basic elements, e.g. lines or circles
- G06T11/203—Drawing of straight lines or curves
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/20—Drawing from basic elements, e.g. lines or circles
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Abstract
The intelligent generation and display method of the vector diagram of the medium-low voltage point location and the line path in the distribution network comprises the steps of firstly, importing a standard legend into a standard legend library of a medium-low voltage project review analysis application system in the distribution network, starting the standard legend, and then building a high-precision tile map in the medium-low voltage project review analysis application system in the distribution network; sequentially uploading the finished path document packages containing the point location and the line segment information after finishing to a system, detecting the point location and the line segment information in the uploaded path document by the system, matching the point location and the line segment information with a standard legend in a logical relationship manner, displaying the matched service objects on a high-precision tile map to automatically generate a path map, and simultaneously carrying out self-adaptive adjustment on the path map to ensure the consistency with an actual scene; and clicking and interactively checking the associated service attribute and the photo information through the service object, wherein the map information is complete, and the point legend keeps a high-fidelity vector state along with the zooming of the map under different map levels.
Description
Technical Field
The invention relates to the technical field of vector diagram generation, in particular to an intelligent generation and display method for a low-voltage point location and line path vector diagram in a distribution network.
Background
When a low-voltage line path in a common distribution network is displayed at present, a designer or a review expert can only preview after conversion by uploading picture maps in DWG and PNG formats, the preview information is large in limitation and cannot be associated with an actual map, the map information is incomplete, and the following defects exist:
1. if the storage data is too large, DWG and PNG format pictures need to be uploaded;
2. drawing information cannot be generated on a map in a vector form;
3. the point location information is too limited, the map only limits the uploaded PNG picture, and information beyond the geographic position of the PNG picture cannot be checked;
4. point location information is lack of interaction, and a preview file cannot be analyzed so as to check specific point location information;
5. the picture display function is not available, and the preview form lacks the picture display of the corresponding point position;
6. when the preview picture is amplified and reduced, high fidelity restoration cannot be obtained;
7. the standardized drawing content cannot be subjected to intelligent review instead of manual review by review experts, and the review efficiency is low.
Disclosure of Invention
The invention aims to provide an intelligent generation and display method for a low-voltage point location and line path vector diagram in a distribution network, so as to solve the problems in the background technology.
The technical problem solved by the invention is realized by adopting the following technical scheme:
the intelligent generation and display method of the vector diagram of the low-voltage point location and the line path in the distribution network comprises the following specific steps:
step 1) importing a standard legend library
After the standard legend is made into a DWG file according to drawing specifications, importing the DWG file into a standard legend library of a low-voltage project review analysis application system in a distribution network and starting the DWG file;
step 2) building a high-precision tile map
Storing high-precision standards, satellites and street tiles by using a JS class library package OpenLayers of an open-source Web GIS and using a document storage-oriented database MongoDB to build a high-precision tile map;
step 3) uploading path document
Uploading the finished path document result packet containing point location and line segment information to a distribution network low-voltage project review analysis application system, verifying the file format in the result packet by the distribution network low-voltage project review analysis application system, and giving a prompt to the result packet which does not meet the requirement;
step 4) reading path document information
The distribution network low-voltage project review analysis application system detects point location and line segment information in the uploading path document, and performs logical relationship matching on the point location and line segment information and a standard legend;
step 5) generating a path diagram
Displaying the matched business objects on a high-precision tile map, and automatically generating a path diagram of point location information and lines according to a line legend among the point locations, wherein the specific implementation mode is as follows:
drawing a point location object on a high-precision tile map according to the longitude and latitude of the point location and matched legend information, acquiring business attributes and photo information associated with the point location, and checking the point location object through clicking of the point location legend;
acquiring longitude and latitude of a starting point and an end point of the line according to the association relationship between the point location information and the line, endowing a corresponding line legend with service attributes, and drawing the line to a high-precision tile map to generate a path map; the route information can be checked by clicking the route object on the route map;
step 6) self-adaptive adjustment of the path diagram
The method comprises the following steps of carrying out self-adaptive adjustment on the placement position of a legend on a path diagram according to the service attribute and the actual angle of a standard legend so as to ensure the consistency with an actual scene;
generating the path length of the line on the path map according to the scaling of the high-precision tile map;
step 7) Interactive View
When the path map draws point locations and line segments, associated business attributes and photo information can be obtained at the same time, and data of the path map is associated with point locations and line segment objects of the high-precision tile map in a json format; when the path graph is displayed, drawing a service object to match with a corresponding vector primitive, displaying a label, finishing rendering point primitives and line segment legends on the path graph, and clicking and interactively viewing associated service attributes and photo information through the service object;
step 8) keeping high fidelity vector state
Under different map levels, the point legend maintains a high fidelity vector state following the zooming of the road map.
Has the advantages that:
1) according to the invention, the low-voltage line path diagram in the intelligent distribution network is automatically generated and displayed without uploading DWG format line images and PNG format map images, so that the problem of overlarge uploading file data when the images are uploaded by engineering results is effectively solved, and the preview performance is ensured; meanwhile, the standardized drawing content can be intelligently checked, and the checking efficiency is effectively improved;
2) according to the invention, when the point location information is automatically generated by the low-voltage line path diagram in the intelligent distribution network, the point location peripheral information of a 'standard map', 'satellite map' and 'street mixed map' can be checked in a selectable diagram mode;
3) according to the invention, the interaction mode of the newly added point location is automatically generated when the point location information is displayed on the low-voltage line path diagram in the intelligent distribution network, so that more point location information can be conveniently checked;
4) according to the method, a low-voltage line path diagram in an intelligent distribution network is automatically generated and matched with point location information supervision pairing logic according to an uploaded standard legend, displayed through a legend corresponding to point location information, and supports a zooming function so as to guarantee high fidelity of the point location legend;
5) according to the invention, the low-voltage line path diagram in the intelligent distribution network is automatically generated, the point location environment photos can be checked according to the point location interaction information, and the map information is complete.
Drawings
FIG. 1 is a flow chart of the preferred embodiment of the present invention.
FIG. 2 is a diagram illustrating an automatic generation result of a path diagram according to a preferred embodiment of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
Referring to fig. 1, the intelligent generation and display method for the vector diagram of the low-voltage point location and the line path in the distribution network comprises the following specific steps:
step 1) importing a standard legend library
The standard legend is made into DWG files according to drawing specifications and then led into a standard legend library of a low-voltage project review analysis application system in the distribution network for starting, and the standard legend can be set to be started or stopped according to design requirements so as to ensure the unified management of design files and facilitate intelligent review; an enabled standard legend will be used for the path graph generation;
step 2) building a high-precision tile map
The method comprises the steps of storing high-precision standards, satellites and street tiles by using a JS library package OpenLayers of an open-source Web GIS and using a document storage-oriented database MongoDB, and building a high-precision tile map, wherein the sizes of the standards, the satellites and the street tiles of the Guangxi province are about 450GB, so that the method can be used for rapidly deploying the offline map service of the Guangxi province;
step 3) uploading path document
Uploading a path document result packet containing point location and line segment information to a distribution network low-voltage project review analysis application system, verifying a file format in the result packet by the distribution network low-voltage project review analysis application system, and giving a prompt to the result packet which does not meet the requirement;
step 4) reading path document information
The distribution network low-voltage project review analysis application system detects point location and line segment information in a path document, if the point location and line segment information exists in the path document, the analysis is carried out, a business object is organized and preprocessed in the analysis process, if the business object has longitude and latitude information and is associated with a device without a longitude and latitude hanging rod, the device without the longitude and latitude hanging rod is called to carry out standard legend operation so as to match the association relationship between the point location information and a line, and if the matching is in accordance with the association relationship, the business object information and the point location line segment object of the high-precision tile map are matched through a logic relationship according to the business specification; otherwise, jumping out;
step 5) generating a path diagram
Displaying the matched business object on a high-precision tile map, and automatically generating a path diagram of point location information and a line according to a line legend between point locations, wherein the specific implementation mode is as follows:
drawing a point location object on a high-precision tile map according to the longitude and latitude of the point location and matched legend information, acquiring business attributes and photo information associated with the point location, and checking the point location object through clicking of the point location legend;
acquiring longitude and latitude of a starting point and an end point of the line according to the association relationship between the point location information and the line, endowing a corresponding line legend with service attributes, and drawing the line to a high-precision tile map to generate a path map; the route information can be checked by clicking the route object on the route map;
step 6) self-adaptive adjustment of the path diagram
The method comprises the following steps of carrying out self-adaptive adjustment on the legend placing position on a path diagram according to the service attribute and the actual angle of the legend so as to ensure the consistency with the actual scene; aiming at special point locations (a three-way well and a corner well), determining the conditions of an in-degree line and an out-degree line of the point locations, namely one in-degree and at least one out-degree in normal conditions, and carrying out fault-tolerant processing on other conditions (multiple in-degrees and zero in-degrees) by a low-voltage project review analysis application system in a distribution network so as to ensure that corresponding primitives can achieve the display effect in an actual scene, and then determining whether the primitives on a path diagram need to be turned or rotated towards a specific direction and corresponding marks according to each included angle (the actual condition is a right angle and the low-voltage project review analysis application system in the distribution network also has certain fault tolerance) between the in-degree line and the out-degree line after arrangement and the placement condition of the primitives in a diagram library;
generating the line path length on the path map according to the scaling of the high-precision tile map, aiming at the drawing of double loops, drawing two line segments parallel to the current path in order to ensure that the line segments of the loops are parallel to the actual path, wherein the drawing algorithm of one parallel line segment is as follows:
I. knowing the radian phi 1 and longitude lambda 1 of the latitude of the starting point of the line, the deflection angle theta of the current path and the due north direction and the proportion delta of the path length of the line and the earth radius, calculating the latitude phi 2 and longitude lambda 2 of the offset target point, wherein the calculation algorithm is as follows:
φ2=Math.asin(Math.sin(φ1) * Math.cos(δ) + Math.cos(φ1) * Math.sin(δ) * Math.cos(θ))
λ2=λ1 + Math.atan2(Math.sin(θ) * Math.sin(δ) * Math.cos(φ1), Math.cos(δ) - Math.sin(φ1) * Math.sin(φ2))
II. And so on, finding the destination offset target point;
III, drawing by taking the starting point offset point and the end point offset point as the starting points of the parallel line segments;
step 7) Interactive View
When the path map draws point locations and line segments, the associated business attributes and photo information can be obtained at the same time, and the data of the path map is associated to point locations and line segment objects of the high-precision tile map in a json format; when the path graph is displayed, drawing a service object to match with a corresponding vector primitive, displaying a label, finishing rendering of a point position primitive and a line segment legend on the high-precision tile map, and clicking and interactively viewing associated service attributes and photo information through the service object;
step 8) keeping high fidelity vector state
Under different roadmap levels, a point location legend can keep a high-fidelity vector state along with the zooming of a roadmap, the core of the algorithm is that when a map is rendered by using a scalable vector graph svg, the point location legend provides a dynamically-adjustable-size svg format based on a standard legend started in a standard graph example library, and data is provided for a high-precision tile map point location object by using json-format data, wherein the specific data format is as follows:
[ {
the name, the name of the business object,
svgCommment, html corresponding to vector graphics
type point location type differentiation
},.....]
When the path graph is zoomed, the proper size can be shown at each zoom level, and the SVG size is dynamically adjusted by adding monitoring on zoom level change to the path graph, so that the point location legend can have a faster response speed and keep synchronous zooming;
under different path diagram levels, the line segment legends can keep synchronous zooming by utilizing the drawing characteristics of map layers, and for the drawing of the articulated objects, an inverse scale function formula can be obtained through the map zooming level and the legend zooming change rate, so that the relative positions of the articulated objects are obtained, and the drawn objects are effectively ensured to be in a high-fidelity vector state.
Claims (5)
1. The intelligent generation and display method of the vector diagram of the low-voltage point location and the line path in the distribution network is characterized by comprising the following specific steps of:
step 1) importing a standard legend library
After the standard legend is made into a DWG file according to drawing specifications, importing the DWG file into a standard legend library of a low-voltage project review analysis application system in a distribution network and starting the DWG file;
step 2) building a high-precision tile map
Building a high-precision tile map in a low-voltage project review analysis application system in a distribution network;
step 3) uploading path document
Uploading the finished path document result packet containing point location and line segment information to a low-voltage project evaluation analysis application system in the distribution network;
step 4) reading path document information
Detecting point location and line segment information in the uploading path document by the distribution network low-voltage project review analysis application system, and carrying out logical relationship matching on the point location and line segment information and the standard legend in the step 1);
step 5) generating a path diagram
Displaying the matched business objects in the step 4) on a high-precision tile map, and automatically generating a path diagram of point location information and lines according to a line legend among the point locations;
step 6) self-adaptive adjustment of the path diagram
The method comprises the following steps of carrying out self-adaptive adjustment on the legend placing position on a path diagram according to the service attribute and the actual angle of the legend so as to ensure the consistency with the actual scene;
generating the path length of the line on the path map according to the scaling of the high-precision tile map;
step 7) Interactive View
When the path map draws point locations and line segments, associated business attributes and photo information can be obtained at the same time, and data of the path map is associated with point locations and line segment objects of the high-precision tile map; when the path graph is displayed, drawing a business object to match with a corresponding vector primitive, displaying a label, finishing rendering point primitives and line segment legends on a high-precision tile map, and clicking and interactively checking associated business attributes and photo information through the business object;
step 8) keeping high fidelity vector state
Under different map levels, the point location legend keeps a high-fidelity vector state along with the zooming of the path diagram;
in step 8), the path map uses a scalable vector graph svg to maintain a high-fidelity vector state, when the high-precision tile map is rendered, a point location legend provides a svg format capable of dynamically adjusting the size by taking a standard legend started in a standard map instance library as a reference, data in a json format is provided for a point location object of the high-precision tile map, and the specific data format is as follows:
[ {
the name, the name of the business object,
svgCommment, html corresponding to vector graphics
type point location type differentiation
}.....]
When the path graph is zoomed, the proper size can be displayed at each zoom level, and the SVG size is dynamically adjusted by adding monitoring on zoom level change to the path graph, so that the point location legend can have a faster response speed and keep synchronous zooming.
2. The method for intelligently generating and displaying the vector diagram of the low-voltage point locations and the line paths in the distribution network according to claim 1, wherein in the step 2), the high-precision tile map stores high-precision standards, satellites and street tiles by using a document-storage-oriented database MongoDB by using a JS-type library package OpenLayers of an open-source Web GIS, so as to provide an offline map service.
3. The intelligent generation and display method of the low-voltage point location and line path vector diagram in the distribution network as claimed in claim 1, wherein in step 3), the low-voltage project review analysis application system in the distribution network checks the file format in the result package, and gives a prompt to the result package which does not meet the requirements.
4. The intelligent generation and display method for the low-voltage point location and line path vector diagram in the distribution network according to claim 1, wherein in the step 5), the specific implementation manner of the path diagram production is as follows:
drawing a point location object on a high-precision tile map according to the longitude and latitude of the point location and matched legend information, acquiring business attributes and photo information associated with the point location, and checking the point location object by clicking the point location legend;
acquiring the longitude and latitude of a starting point and an end point of the line according to the association relationship between the point location information and the line, endowing a corresponding line legend with service attributes, and drawing the line to a high-precision tile map to generate a path map.
5. The intelligent generation and display method for the low-voltage point location and line path vector diagram in the distribution network according to claim 1, wherein in step 7), the data for drawing the point location and the line segment is associated with the point location and the line segment object of the high-precision tile map in a json format.
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