CN113034679A - Real-time dynamic three-dimensional visual display method for power transmission line - Google Patents
Real-time dynamic three-dimensional visual display method for power transmission line Download PDFInfo
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Abstract
The invention discloses a real-time dynamic three-dimensional visual display method for a power transmission line, which relates to the technical field of power equipment management and comprises the following steps: collecting line data of the power transmission line; converting the line data into GeoVRML format data; and constructing a three-dimensional display model based on GeoVRML format data, and generating a dynamic three-dimensional scene of the power transmission line through the three-dimensional display model. Compared with the traditional two-dimensional GIS technology, the three-dimensional visual management method for the power transmission line can achieve three-dimensional visual management of the power transmission line, and the three-dimensional display model based on the GeoVRML format data is used for solving the problem of conversion from large-scale line data to a GeoVRML data file format, and the GeoVRML is used for simplifying and expressing the large-scale line data in multiple resolutions, so that mass data can be displayed rapidly, accurately and dynamically in real time.
Description
Technical Field
The invention relates to the technical field of power equipment management, in particular to a real-time dynamic three-dimensional visual display method for a power transmission line.
Background
The geographical environment that transmission line passed through is more complicated, and a lot of all are rare mountain areas, and this has brought a lot of difficulties and risks for patrolling and examining of transmission line. Once a problem occurs in the power transmission line, a great influence is caused on national production, and with the increase of data acquisition ways of the power transmission line, the information amount of the power transmission line is increased day by day, so that new requirements are provided for operation and maintenance management of the power transmission line.
The existing power transmission line management work is based on the traditional two-dimensional GIS technology, the technology has the defect of being not visual enough, the working requirement of the power transmission line inspection data visualization can not be met gradually, and the traditional two-dimensional GIS technology is difficult to smoothly process massive data due to the fact that the data of the power transmission line is increased continuously.
Disclosure of Invention
The present invention is directed to at least solving the problems of the prior art. Therefore, the invention provides a real-time dynamic three-dimensional visual display method for a power transmission line, which comprises the following steps:
collecting line data of the power transmission line;
converting the line data into GeoVRML format data;
and constructing a three-dimensional display model based on the GeoVRML format data, and generating a dynamic three-dimensional scene of the power transmission line through the three-dimensional display model.
According to the embodiment of the invention, at least the following technical effects are achieved:
compared with the traditional two-dimensional GIS technology, the three-dimensional visual management and analysis method can realize the three-dimensional visual management and analysis of the power transmission line; the invention uses the GeoVRML format data-based three-dimensional display model, solves the problem of conversion from large-scale line data to GeoVRML data file format, can realize simplification and multiresolution expression of the large-scale line data by utilizing the GeoVRML technology, and realizes quick, accurate and real-time dynamic display of mass data.
According to some embodiments of the invention, further comprising the step of:
acquiring monitoring data, matching the monitoring data with the line data, and positioning an abnormal data point of the power transmission line;
and displaying the abnormal data points through the three-dimensional display model.
According to some embodiments of the invention, the collecting line data of the power transmission line comprises the following steps:
the line data of the power transmission line are collected through an unmanned aerial vehicle, and the unmanned aerial vehicle is provided with a laser radar measuring system.
According to some embodiments of the invention, the line data comprises laser point cloud data and GPS positioning data.
According to some embodiments of the invention, converting the line data into GeoVRML format data comprises the steps of:
filtering the laser point cloud data, and performing positioning calculation on the filtered laser point cloud data and the GPS positioning data to obtain digital elevation data;
converting the digital elevation data to DEM data by ArcInfo or ERDAS;
and converting the DEM data into GeoVRML format data by a GeoVRML node construction method.
According to some embodiments of the invention, before converting the DEM data into the GeoVRML format data by the GeoVRML node construction method, the method further comprises the following steps:
and converting the DEM data through a conversion tool Dem2 geoeg.
According to some embodiments of the invention, further comprising the steps of:
and sending the dynamic three-dimensional scene generated by the three-dimensional display model to different terminals through a 5G cloud server.
According to some embodiments of the invention, the terminal comprises a mobile platform.
According to some embodiments of the invention, the transmission line comprises one or more of a ground wire, an insulator, hardware, a pole tower, and a base device.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a real-time dynamic three-dimensional visualization display method for a power transmission line according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating an implementation of step S200 in fig. 1.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Before the embodiment of the present invention is described, the technical principle used in the embodiment of the present invention is described:
the GeoVRML technology supports various coordinate systems and reference ellipsoids, has high data expression precision and powerful three-dimensional modeling function, and can effectively construct a three-dimensional terrain model. GeoVRML describes geospatial data based on a virtual modeling language, and allows a user to access geo-referenced data distributed over a network through a Web browser that installs standard VRML plug-ins.
Referring to fig. 1, an embodiment of the present invention provides a real-time dynamic three-dimensional visualization display method for a power transmission line, including the following steps:
and S100, acquiring line data of the power transmission line in real time through the unmanned aerial vehicle.
Unmanned aerial vehicle carries on laser radar measurement system, and laser radar measurement system includes GPS positioning device, laser scanning range unit and inertial navigation equipment usually. The unmanned aerial vehicle mainly flies along the route of the power transmission line, so that the line data along the power transmission line are collected. As another optional implementation mode, the line data of the power transmission line can be acquired in real time through the satellite images, and certainly, due to the fact that the data are acquired through the unmanned aerial vehicle in the complex environment condition along the power transmission line, the work efficiency of line inspection can be improved, and the inspection cost is reduced.
And step S200, converting the line data into GeoVRML format data.
Converting the collected line data into corresponding GeoVRML format data is a necessary step for constructing a GeoVRML format data-based three-dimensional display model.
As an optional implementation manner, the line data in step S100 includes laser point cloud data and GPS positioning data, where the laser point cloud data refers to a set of a series of massive points expressing target spatial distribution and target surface characteristics, which is obtained by acquiring a spatial coordinate of each sampling point on the surface of an object under the same spatial reference system by using laser, and power transmission line scene data in a spatial dimension can be acquired by using the laser point cloud data. The laser point cloud data is acquired by laser scanning ranging equipment in the laser radar measuring system, the GPS positioning data can be acquired by the GPS positioning equipment and inertial navigation equipment in the laser radar measuring system, and the acquisition principle is not described in detail here. The specific steps of converting the laser point cloud data and the GPS positioning data into GeoVRML format data are as follows:
step S201, filtering the laser point cloud data, and performing positioning calculation on the filtered laser point cloud data and GPS positioning data to obtain digital elevation data.
Since the processes of filtering the laser point cloud data and performing the positioning calculation are many implementations in the art, the detailed description of the processes is omitted here.
Step S202, converting the digital elevation data into DEM data through ArcInfo or ERDAS.
Wherein, ArcInfo is a flagship product of ArcGIS Desktop (ArcGIS Desktop is a set of professional GIS application integration suite software). The ERDAS is a piece of remote sensing image processing system software. Can be downloaded to a corresponding website, and will not be described in detail here.
And step S203, converting the DEM data into GeoVRML format data by a GeoVRML node construction method.
The following are GeoVRML nodes as shown in table 1 below:
TABLE 1
(1) Geocodinate nodes are used for specifying coordinates of a series of points under a geospatial coordinate system, geographic data can directly enter a VRML world, and interconversion between the coordinate systems is completed in JAVA within the physical definition of the nodes. The usage method of the GeoCordinate node in the VRML world is the same as that of the standard node Coordinate, and the GeoCordinate node can be nested and used in standard nodes IndexFaceSet, IndexLineset and PointSet.
(2) The geoelevtiongrid node, geoelevtiongrid can be used within the geometric domain (Geometry) of the Shape node in the VRML world. In an eleventrid node, fields for controlling the three-dimensional geological curved surface form are mainly xDimension, xSpacing, zSpacing and height, and aiming at the characteristics of the GeoElventrid node fields, when data is processed, original data needs to be processed into a gridding data file format corresponding to the original data, namely when interpolation operation is carried out, the line number and the column number of a grid need to be respectively assigned to the xDimension field and the zDimension field, and an interpolated elevation two-dimensional grid numerical value is assigned to the height field.
(3) GeoLOD nodes are used for realizing multi-resolution expression of network-based terrain data, two detail levels similar to a quadtree structure are expressed by using group nodes for a spatial geographic target, and effective downloading and unloading are carried out between the detail levels. GeoLOD stores all newly downloaded nodes in a cache memory, so that when the viewpoint changes slightly, some scene nodes of the terrain tiles are prevented from being downloaded or unloaded again, and only the cache memory is searched to determine whether the nodes matched with the cache memory exist, thereby accelerating the speed of large-scale terrain browsers and searching.
(4) The GeoLocation node is used for converting an original terrain data file (. dem) into a data format which can be expressed by VRML, converting the original terrain data file according to attributes such as a given geographic space coordinate system, a geographic reference coordinate system and the like to obtain original terrain data suitable for being expressed in the VRML, then using the extension node object to carry out programming development to form a GeoVRML file, and finally carrying out three-dimensional dynamic interaction and visual analysis in a browser.
As an optional implementation manner, before step S203, the method further includes the steps of:
the DEM data is converted through a conversion tool Dem2 geoeg. The data volume after the conversion by the conversion tool Dem2geoeg is obviously reduced, and the processing efficiency of the three-dimensional model is favorably improved.
And S300, constructing a GeoVRML format data-based three-dimensional display model, and generating a dynamic three-dimensional scene of the power transmission line through the three-dimensional display model.
GeoVRML describes geospatial data based on a virtual modeling language, and enables a user to access line data based on GeoVRML format data through a Web browser provided with a standard VRML plug-in. In step S300, the data in the GeoVRML format is input (read) into the GeoVRML, thereby generating a dynamic three-dimensional scene in the browser. The embodiment solves the problem of conversion from large-scale terrain Data (DEM) to a GeoVRML data file format, simplifies and expresses the large-scale terrain data in multiple resolutions by utilizing the GeoVRML, and realizes quick, accurate and real-time dynamic display of mass data.
As an optional implementation, the method further comprises the following steps:
and S400, acquiring monitoring data, matching the monitoring data with line data, and positioning an abnormal data point of the power transmission line.
And S500, displaying the abnormal data points through the three-dimensional display model.
In steps S400 and S500, through the real-time acquired monitoring data, which is the real-time monitoring data acquired by the sensor disposed on the power transmission line, the added abnormal data is displayed in real time by making full use of the intuitiveness of positioning, so that an intuitive image of the fault point can be provided to the manager, and the fault point can be found quickly.
As an optional implementation, the method further comprises the following steps:
and sending the dynamic three-dimensional scene generated by the three-dimensional display model to different terminals through a 5G cloud server. The terminal comprises a mobile platform (such as a mobile phone, a flat panel and other mobile devices), a workbench (such as a plurality of working platforms arranged at intervals along the power transmission line), a monitoring center and the like. The advantage of handling like this is that can make things convenient for the random everywhere of managers understanding the condition that the transmission line takes place, the management of the transmission line of being convenient for managers.
The method comprises the steps of converting line data acquired in real time into GeoVRML format data, finally constructing a three-dimensional display model based on the GeoVRML format data, and generating a dynamic three-dimensional scene of the power transmission line through the three-dimensional display model. Compared with the traditional two-dimensional GIS technology, the three-dimensional visual management method can realize the three-dimensional visual management of the power transmission line. In addition, the invention uses the three-dimensional display model based on the GeoVRML format data, solves the problem of conversion from large-scale line data to the GeoVRML data file format, simplifies and expresses the large-scale line data in a multi-resolution mode by utilizing the GeoVRML, and realizes the rapid, accurate and real-time dynamic display of mass data.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A real-time dynamic three-dimensional visual display method for a power transmission line is characterized by comprising the following steps:
collecting line data of the power transmission line;
converting the line data into GeoVRML format data;
and constructing a three-dimensional display model based on the GeoVRML format data, and generating a dynamic three-dimensional scene of the power transmission line through the three-dimensional display model.
2. The real-time dynamic three-dimensional visualization display method for the power transmission line according to claim 1, further comprising the steps of:
acquiring monitoring data, matching the monitoring data with the line data, and positioning an abnormal data point of the power transmission line;
and displaying the abnormal data points through the three-dimensional display model.
3. The real-time dynamic three-dimensional visualization display method for the power transmission line according to claim 1, wherein the collecting of the line data of the power transmission line comprises the following steps:
the line data of the power transmission line are collected through an unmanned aerial vehicle, and the unmanned aerial vehicle is provided with a laser radar measuring system.
4. The real-time dynamic three-dimensional visualization display method for the power transmission line according to claim 3, wherein the line data comprises laser point cloud data and GPS positioning data.
5. The real-time dynamic three-dimensional visualization display method for the power transmission line according to claim 4, wherein the step of converting the line data into GeoVRML format data comprises the following steps:
filtering the laser point cloud data, and performing positioning calculation on the filtered laser point cloud data and the GPS positioning data to obtain digital elevation data;
converting the digital elevation data to DEM data by ArcInfo or ERDAS;
and converting the DEM data into GeoVRML format data by a GeoVRML node construction method.
6. The real-time dynamic three-dimensional visualization display method for the power transmission line according to claim 5, wherein before the DEM data is converted into GeoVRML format data through a GeoVRML node construction method, the method further comprises the following steps:
and converting the DEM data through a conversion tool Dem2 geoeg.
7. The real-time dynamic three-dimensional visualization display method for the power transmission line according to claim 1, further comprising the steps of:
and sending the dynamic three-dimensional scene generated by the three-dimensional display model to different terminals through a 5G cloud server.
8. The real-time dynamic three-dimensional visualization display method for the power transmission line according to claim 7, wherein the terminal comprises a mobile platform.
9. The real-time dynamic three-dimensional visualization display method for the power transmission line according to any one of claims 1 to 8, wherein the power transmission line comprises one or more of a ground wire, an insulator, hardware, a tower, and a base device.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113965556A (en) * | 2021-10-21 | 2022-01-21 | 飞纳经纬科技(北京)有限公司 | Web-based inertial navigation attitude 3D real-time display method, device and system |
| CN115525727A (en) * | 2022-10-14 | 2022-12-27 | 昆明理工大学 | Agile power transmission line point cloud modeling and analyzing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113965556A (en) * | 2021-10-21 | 2022-01-21 | 飞纳经纬科技(北京)有限公司 | Web-based inertial navigation attitude 3D real-time display method, device and system |
| CN113965556B (en) * | 2021-10-21 | 2023-10-31 | 飞纳经纬科技(北京)有限公司 | Method, device and system for 3D real-time display of inertial navigation gesture based on web |
| CN115525727A (en) * | 2022-10-14 | 2022-12-27 | 昆明理工大学 | Agile power transmission line point cloud modeling and analyzing system |
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