CN115422727A - Three-dimensional panoramic digital twin power transmission channel visualization method and system - Google Patents
Three-dimensional panoramic digital twin power transmission channel visualization method and system Download PDFInfo
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Abstract
The invention discloses a three-dimensional panoramic digital twin power transmission channel visualization method and system, and belongs to the technical field of intelligent operation and maintenance of power transmission lines. According to the invention, a remote sensing map, a three-dimensional model and a point cloud model are integrated in a power transmission channel, and the integration with sensor data is advanced in a mode of combining the model and the map, so that a real-time scene and a three-dimensional scene of the power transmission channel are twinned, and accordingly, a visual digital twinborn power transmission channel is generated according to the sensor data, and the inspection work of power transmission channel operation and maintenance personnel and the maintenance work of power transmission line faults are greatly facilitated.
Description
Technical Field
The invention relates to a three-dimensional panoramic digital twin power transmission channel visualization method and system, and belongs to the technical field of intelligent operation and maintenance of power transmission lines.
Technical Field
Digital twins are becoming the new technological focus of global information technology development, technologies such as internet of things and cloud computing are increasingly widely adopted for implementing digital twins, but mature and complete products and technologies are not available in the field of power transmission lines. The original two-dimensional scene cannot meet market demands, so that the real-time scene of the transmission line can be better displayed, the environment can be restored around the transmission line, the vast users can have better visual experience, the scene of the scene can be more conveniently and rapidly seen, and the visualization of the three-dimensional panoramic digital twin power transmission channel is realized.
For this purpose, the prior art also discloses the following technical documents: chinese patent document CN108389256A discloses a two-three-dimensional interactive unmanned aerial vehicle power tower inspection auxiliary method, which includes the following steps: step 1, taking an image or a video shot by an unmanned aerial vehicle as input, and extracting a key frame of the image or the video; step 2, extracting the electric power tower information from the extracted key frames of the images or videos based on the significance and the connectivity; step 3, completing semi-dense three-dimensional point cloud reconstruction based on SfM and MVS and obtaining the corresponding relation between the two-dimensional image and the three-dimensional point cloud; step 4, completing the construction of a two-dimensional and three-dimensional interactive visualization system; step 5, automatically dividing to obtain a complete point cloud of the target to be detected based on the target to be detected under one view angle selected by a user in the three-dimensional point cloud; and 6, automatically finding out the image with the target to be detected based on the corresponding relation between the two-dimensional image and the three-dimensional point cloud, marking the position of the target to be detected in the image, and intelligently sequencing the candidate images. However, in the technical literature, only information of the power tower is effectively collected, so that inspection data is realized, but the final purpose of visualization of the three-dimensional panoramic digital twin power transmission channel cannot be realized.
Disclosure of Invention
Aiming at the defects of the prior art, the invention discloses a three-dimensional panoramic digital twin power transmission channel visualization method.
The invention also discloses a visualization system for realizing the method.
Summary of the invention:
a three-dimensional panoramic digital twin power transmission channel visualization method is characterized in that a power transmission channel is further fused with sensor data in a mode of integrating a remote sensing map, a three-dimensional model and a point cloud model and combining the model and the map, and a real-time scene and a three-dimensional scene of the power transmission channel are twinned, so that the visualized digital twin power transmission channel is generated according to the sensor data, and inspection work of power transmission channel operation and maintenance personnel and maintenance work of power transmission line faults are greatly facilitated.
The detailed technical scheme of the invention is as follows:
a three-dimensional panoramic digital twin power transmission channel visualization method is characterized by comprising the following steps:
creating a three-dimensional model of a tower:
correspondingly creating a three-dimensional model of the tower according to the type of the tower distributed on the power transmission channel, deriving a gltf model, and loading point cloud data of the tower correspondingly to the gltf model to flexibly configure a tower data source; the three-dimensional model of the tower can be obtained through a three-dimensional technology, for example, the three-dimensional model of the tower is obtained through 3dmax software or oblique photography and other technologies; the three-dimensional model of the tower comprises a tangent tower, a strain tower, a corner tower, a transposition tower and the like;
collecting tower information:
the information of the towers distributed on the real power transmission channel is collected, and the information comprises the following steps: longitude and latitude coordinates of the location of the pole tower and attribute information of the pole tower; the attribute information of the tower comprises: type information of the pole tower and maintenance information of the pole tower; the longitude and latitude coordinates corresponding to the tower can be used for acquiring accurate longitude and latitude coordinates of the location of the tower according to the monitoring equipment correspondingly loaded on the tower, and the accurate longitude and latitude coordinates are applied to accurate positioning display of the tower in the later period; meanwhile, the monitoring equipment acquires information of the tower needing maintenance in real time, so that maintenance personnel can track maintenance according to the attribute information of the tower;
rendering the three-dimensional model of the tower:
1) Determining the rotation angle of the tower: known as A' (x) 1 ,y 1 )、B＇(x 2 ,y 2 ),C＇(x 3 ,y 3 ) The three points are three adjacent towers, and whether the tower is a corner tower is judged:
when the tower is not a corner tower, the angle of the A' tower is Math.atan2 (X) with the east-west longitude direction as the X axis 1 ,y 1 )/(Math.PI/180)；
When the tower is a corner tower, the calculation mode is as follows:
the angle of the a 'B' segment to the X axis is angl1= math 2 -y 1 ),(x 2 -x 1 ))/(Math.PI/180)；
Angle of B 'C' segment to X axis is angl2= math 3 -y 2 ),(x 3 -x 2 ))/(Math.PI/180)；
The angle of the B' tower is (angl 1+ angl2+ 90)/2
In this way, the angles of all the towers are obtained in a analogized way;
the method is characterized in that the rotation angle obtained by calculation in the first rendering is saved, so that the subsequent tower rendering is called with help, namely, the operation is not performed once again in the second rendering, so that the loading performance of the browser is reduced, and the speed is higher in the second re-loading;
2) Map positioning of tower
Rendering a map by utilizing a cecum according to longitude and latitude coordinates of the position of a tower, tower type information and a corresponding tower rotation angle, wherein the cecum is a library which is a cross-platform and cross-browser and used for displaying a three-dimensional earth and a front-end script language of the map;
3) Rendering the electric wires between adjacent towers to form digital twin simulation:
firstly, calculating position coordinates of an insulator on a tower relative to a reference point, wherein the reference point is determined in the following way, and one reference point is selected when the insulator rotates;
then, the angle of rotation around the false y-axis is calculated as a variable a (calculation a of the first method of example 1 below), then the variable a is substituted into a calculation B of the angle of rotation around the axis of the target tower (calculation B of the second method of example 1 below), and then the longitude, latitude and height of the insulator are calculated:
insulator latitude
＝Cesium.Math.toDegrees(Cesium.Cartographic.fromCartesian(B).longitude).toFixed(10)；
Insulator longitude
＝Cesium.Math.toDegrees(Cesium.Cartographic.fromCartesian(B).latitude).toFixed(10)；
Insulator height = center.
Wherein B is an angle variable of the rotation of the electric wire around the axis of the target point tower (calculated by the method two in example 1 below);
and drawing a parabola between the two towers according to the longitude, latitude and height data to finally form a three-dimensional scene.
Preferably, according to the present invention, when the parabola is drawn, a ratio of the highest point of the electric wire to the total distance is introduced to control a digital twin simulation of a change in a parabolic arc of the line due to expansion and contraction caused by a change in temperature.
Preferably, in step 2), the ceium supports a Cartesian coordinate system, and the longitude and latitude of the pole tower are converted into the Cartesian coordinate system by the Cartesian3 method of the ceium; because the number of the gltf objects is large, the batch loading of the gltf files can be completed by using a batch loading method and a model InstanceCollection method of the cesIUM.
According to the optimization method, after the step 2), fine adjustment of the rotation angle of the tower is realized by selecting the tower and rotating a control corresponding to the tower; further, the fine adjustment angle is updated to the three-dimensional model of the tower or tower machine account information, the fine adjustment angle is finally stored in the server, the fine adjustment function is added in the line preview, the tower is selected by clicking, if the angle is not appropriate, the function of fine adjustment of the tower angle can be achieved by rotating a control beside the tower, the angle after fine adjustment is bound to the tower machine account information, and then the database of the server is stored, so that the tower is rendered more accurately.
According to the optimization of the invention, aiming at the longitude and latitude coordinates of the location of the tower, front-end encryption is utilized, namely encryption is carried out according to defined encryption rules, and finally the encryption rules are transmitted to a server, the encryption rules can be set by selecting different encryption levels according to different application scenes, and the existing encryption rules can be selected, and the encryption rules do not belong to the protection of the invention.
According to the invention, preferably, the attribute information of the tower is encrypted by using the front end, namely encrypted according to the defined encryption rule, and finally transmitted to the server, the encryption rule can be set by selecting different encryption levels according to different application scenes, and the existing encryption rule is selected, and the encryption rule does not belong to the protection of the invention.
According to the preferred method of the invention, the method for judging whether the tower is a corner tower comprises the following steps: known as A' (x) 1 ,y 1 )、B＇(x 2 ,y 2 ),C＇(x 3 ,y 3 ) The three points are three adjacent towers;
the angle of the a 'B' segment to the X axis is angl1= math 2 -y 1 ),(x 2 -x 1 ))/(Math.PI/180)；
Angle of B 'C' segment to X axis is angle 2= math 3 -y 2 ),(x 3 -x 2 ))/(Math.PI/180)；
Comparing angl1 and angl 2:
and if the absolute value of the subtraction is greater than 5 degrees, judging that the tower corresponding to the middle B' is a corner tower. The use standard for the turret referred to the national grid standard is: corner towers are used where the line needs to turn, although if the angle is not large, straight towers can be used, typically no more than 5 degrees.
According to the invention, the map in the step 2) is formed by downloading map tiles, the invention integrates a heaven and earth map, and since the invention is used in an intranet environment, the tiles of the integrated map need to be downloaded.
Preferably, in creating the three-dimensional model of the tower, the deriving the gltf model includes: after the 3dmax software is used for fine modeling, a three-dimensional model of the tower in the gltf format is derived by using a plug-in babylon of the 3dmax software.
According to the invention, the visualization method further comprises rendering the sensor:
and adding a sensor model on the corresponding tower according to the longitude and the latitude of the tower.
According to the invention, the visualization method further comprises the following steps:
the method comprises the steps of constructing an animated motion track through ceium to obtain a CZML, converting the motion track into an autonomous cruising motion track according to the longitude and latitude of a tower, adding the motion track into a visual angle through a CzmlDataSource method, further enabling the autonomous cruising to support functions of pausing, fast forwarding, fast backing and the like, and being more convenient to operate.
According to a preferred embodiment of the present invention, the visualization method further comprises: lazy loading of model, in the process of rendering the gltf model, once only all rendering all models can consume very big memory space, lead to the page very stuck, so lazy loading function is indispensable, through the longitude and latitude coordinate in the page visual angle in the past, acquires the coordinate of shaft tower and judges which gltf model need be rendered in this coordinate range at page loading completion or cruise in-process:
when the gltf model is not in the visible range, the gltf model is destroyed, the memory of the browser is released, the problem of the pause phenomenon caused by excessive models is solved, and the page is smoother.
According to the invention, the visualization method further comprises the following interactive functions of the page:
the user interactively operates the three-dimensional scene to rotate, zoom and drag the three-dimensional scene;
the interaction further comprises: popping up longitude and latitude coordinates of the position of a tower and attribute information of the tower by clicking a three-dimensional model of the tower;
the three-dimensional model of the tower is clicked to pop out data monitored by the corresponding sensor in real time, so that good interactive experience and visual effect are achieved.
A visualization system for realizing the visualization method of the three-dimensional panoramic digital twin power transmission channel is characterized by comprising the following steps: the system comprises a three-dimensional model, a point cloud model, a pole tower ledger data module, a sensor data module, a server and a web end;
the three-dimensional model is the three-dimensional model of the tower in the visualization method;
the point cloud model is a model obtained by correspondingly rendering a three-dimensional model of a tower;
the pole tower ledger data module is used for storing and updating longitude and latitude coordinates of the location of the pole tower, attribute information of the pole tower and corner data in real time;
the sensor data module is used for transmitting the monitoring data of the sensor on the tower to a server in real time;
the web terminal is used for displaying a three-dimensional scene in the target power transmission channel in real time.
Preferably, according to the present invention, the web end in the visualization system is further configured to: the user realizes the rotation, the zooming and the dragging of the three-dimensional scene through page interaction and the interactive operation of the three-dimensional scene;
the interactive operation further comprises: the method comprises the steps that a three-dimensional model of a tower is clicked to pop out longitude and latitude coordinates of the position where the tower is located and attribute information of the tower;
and popping up data monitored by the corresponding sensor in real time by clicking the three-dimensional model of the tower.
The invention has the beneficial technical effects that:
aiming at the problem that the current two-dimensional scene cannot meet the current requirements, the method provided by the invention combines a three-dimensional model or point cloud data and a remote sensing map with sensor data obtained on some power transmission lines to truly restore the scene of the power transmission channel, combines the sensor data to truly restore the ice coating of the lines and show the radian of the lines obtained between towers according to the temperature change. The user can rotate, translate and cruise the model autonomously, restore the real scene of the transmission line according to various sensor information, accurately position the model according to the longitude and latitude of the tower, calculate the corresponding angle of the corner tower according to a corresponding algorithm, and generate the rendering of the electric wire according to the Cartesian coordinates of the insulator in the ceium. The radian of the tower line can also display the corresponding radian according to data returned by the sensor. The combination mode of the 3d model and the map and the data of various sensors are used as a basis, the 3d scene model does not need to be built on a large scale, different data can be displayed according to the change of the data, the flexibility is high, the workload is low, but the requirement on the technology is relatively high.
1. The invention displays the three-dimensional panorama by combining the gltf model and the satellite map, fully utilizes data such as physical models, sensor data updating, operation history and the like, integrates multi-physical quantity and multi-scale simulation processes, simulates virtual three-dimension according to the physical models and the sensor data, is different from the previous two-dimensional technology, and is applied in the field of power transmission, so that the alarm information display in the virtual reality can be more intuitively displayed, and the alarm position can be more intuitively positioned.
2. The invention also introduces an encryption link into the visualization method, uses an encryption technology of a custom rule for the sensitive information of the power operation, prevents the sensitive information from being leaked, and does not influence the user experience in the encryption and decryption process.
3. Through the method and the system, a user can operate and interact the physical model in a three-dimensional scene, more conveniently and quickly know real-time monitoring data on the model, and not only can the surrounding environment be more intuitively known, but also the operation is simple, and the user friendliness is high.
4. According to the invention, different tower models are rendered according to tower position information and attribute information, so that the workload can be reduced to a great extent, the realization of the three-dimensional panorama of a web end is not required to be realized by all three-dimensional modeling, the acquisition of the three-dimensional panorama information is not required to be realized by a large number of technologies such as oblique photography and the like, only little work preparation is required in the early stage, the multiplexing of a plurality of platforms and the display of multi-stage towers are realized, and the realization of the three-dimensional panorama of one power transmission line can be realized by only needing little workload in the later maintenance. Finally, the purposes of reducing research and development cost, reducing maintenance cost, and improving reuse rate are achieved.
Description of the drawings:
FIG. 1 is a schematic diagram showing the effect of the combination of the tower line and the tower rendered by the visualization method of the present invention;
FIG. 2 is a schematic diagram of a three-dimensional scene rendered by the visualization method of the present invention;
fig. 3 is a block schematic diagram of a visualization system according to the present invention.
The specific implementation mode is as follows:
the invention is described in detail below with reference to the following examples and drawings, but is not limited thereto.
Before the following embodiments, firstly, the tower information is maintained and data is collected, and secondly, a web-end browser is rendered:
the first step is as follows: the method for maintaining tower information and acquiring data by a user comprises the following steps
S1, maintaining the type of a tower (a straight tower, a corner tower, a strain tower and the like);
s2, acquiring the longitude and latitude, wherein the monitoring equipment is arranged on the tower, so that the corresponding longitude and latitude can be transmitted for encryption processing and uploading;
s3, downloading map tiles, namely downloading the map tiles in an intranet environment and providing keys for loading the map in an extranet environment for configuration because the map is combined to show the three-dimensional panorama;
the second step is that: and rendering of the browser, integrating a processium frame in the browser, supporting the best experience in the Google browser, and recommending to open in the browser of the latest version of Google for operation and interaction.
Examples 1,
A three-dimensional panoramic digital twin power transmission channel visualization method comprises the following steps:
creating a three-dimensional model of a tower:
correspondingly creating a three-dimensional model of the tower according to the type of the tower distributed on the power transmission channel, deriving a gltf model, and correspondingly loading point cloud data of the tower to the gltf model so as to flexibly configure a tower data source; the three-dimensional model of the tower can be obtained through a three-dimensional technology, for example, the three-dimensional model of the tower is obtained through 3dmax software or oblique photography and other technologies; the three-dimensional model of the tower comprises a tangent tower, a strain tower, a corner tower, a transposition tower and the like;
collecting tower information:
the information of the towers distributed on the real power transmission channel is collected, and the information comprises the following steps: longitude and latitude coordinates of the location of the pole tower and attribute information of the pole tower; the attribute information of the tower comprises: type information of the pole tower and maintenance information of the pole tower; the longitude and latitude coordinates corresponding to the pole tower can acquire accurate longitude and latitude coordinates of the location of the monitoring equipment according to the monitoring equipment correspondingly loaded on the pole tower, and are applied to accurate positioning display of the pole tower in the later period; meanwhile, the monitoring equipment acquires information of the tower needing maintenance in real time, so that maintenance personnel can track maintenance according to the attribute information of the tower;
rendering the three-dimensional model of the tower:
1) Determining the rotation angle of the tower: known as A' (x) 1 ,y 1 )、B＇(x 2 ,y 2 ),C＇(x 3 ,y 3 ) The three points are three adjacent towers, and whether the tower is a corner tower is judged:
when the tower is not a corner tower, the angle of the A' tower is Math.atan2 (X) with the east-west longitude direction as the X axis 1 ,y 1 )/(Math.PI/180)；
When the tower is a corner tower, the calculation mode is as follows:
the angle of the a 'B' segment to the X axis is angl1= math 2 -y 1 ),(x 2 -x 1 ))/(Math.PI/180)；
Angle of B 'C' segment to X axis is angle 2= math 3 -y 2 ),(x 3 -x 2 ))/(Math.PI/180)；
The angle of the B' tower is (angl 1+ angl2+ 90)/2;
comparing angl1 and angl 2:
and if the absolute value of the subtraction is greater than 5 degrees, the tower corresponding to the middle B' is judged to be a corner tower. The use standard for the corner tower referred to the national grid standard is: corner towers are used where the line needs to turn, although if the angle is not large, straight towers can be used, typically no more than 5 degrees.
The angles of all the towers are obtained by analogy;
the method is characterized in that the rotation angle obtained by calculation in the first rendering is saved, so that the subsequent tower rendering is called with help, namely, the operation is not performed once again in the second rendering, so that the loading performance of the browser is reduced, and the speed is higher in the second re-loading;
2) Map positioning of tower
Rendering a map by utilizing a cecum according to longitude and latitude coordinates of the position of a tower, tower type information and a corresponding tower rotation angle, wherein the cecum is a library which is a cross-platform and cross-browser and used for displaying a three-dimensional earth and a front-end script language of the map;
3) Rendering the electric wires between the adjacent towers to form digital twinning simulation:
firstly, calculating position coordinates of an insulator on a tower relative to a reference point, wherein the reference point is determined in the following way, and one reference point is selected when the insulator rotates;
then, the angle of rotation around the false y-axis is calculated as a variable a (calculation a of the first method of example 1 below), then the variable a is substituted into a calculation B of the angle of rotation around the axis of the target tower (calculation B of the second method of example 1 below), and then the longitude, latitude and height of the insulator are calculated:
insulator latitude
＝Cesium.Math.toDegrees(Cesium.Cartographic.fromCartesian(B).longitude).toFixed(10)；
Insulator longitude
＝Cesium.Math.toDegrees(Cesium.Cartographic.fromCartesian(B).latitude).toFixed(10)；
Insulator height = cesum. Cartogrphic. Fromcatesian (B) height. Tofixed (2);
wherein B is an angle variable of the rotation of the electric wire around the axis of the target point tower (calculated by the method two in example 1 below);
and drawing a parabola between the two towers according to the longitude, latitude and height data to finally form a three-dimensional scene. As shown in fig. 1.
When drawing a parabola, the ratio of the highest point of the electric wire to the total distance is transmitted so as to control the digital twin simulation of the change of the radian of the parabola of the expansion and contraction of the circuit caused by the change of the temperature. As shown in fig. 2.
Specifically, the method comprises the following steps:
insulators are arranged on the tower, and the lines generated by rendering need to be strung into the insulators, so that accurate calculation is needed.
Only the longitude and latitude coordinates of the tower and the rotation angle of the tower can be obtained. Through the data, an offset of the insulator to the tower can be obtained through the function of the pick-up point of the ceium. Taking the leftmost insulator at the bottom as an example, the offset amount obtained is as follows: { x: -15.448676169899, y: 117.469717 37.898389, as a reference point for rotation, was then calculated by two methods:
the method comprises the following steps:
the second method comprises the following steps:
the calculation process is as follows: firstly, the position coordinates of the insulator relative to the reference points 117.469717 and 37.898389 are calculated, then the angle of rotation around the false y axis is calculated as a variable A by a first method, then an angle of rotation around the axis of the target point tower is calculated as a variable B by a second method, and then the longitude and latitude height of each point of the insulator is calculated as:
latitude = center
Height = center
After the data are stored, a parabola between the two towers can be drawn, and the parabola can be drawn to a ratio of the highest point to the total distance so as to control the digital twin simulation of the line due to the change of the thermal expansion and the cold contraction caused by the temperature change, wherein the change of the radian of the parabola is changed.
Examples 2,
The visualization method according to embodiment 1, wherein in step 2), the ceium supports a Cartesian coordinate system, and the longitude and latitude of the pole tower are converted into the Cartesian coordinate system by the Cartesian3 method of the ceium; because the number of the gltf objects is large, the batch loading of the gltf file is completed by using a batch loading method and a model InstanceCollection method of the cesIUM.
Examples 3,
According to the visualization method in the embodiment 2), after the step 2), the rotation angle of the tower is finely adjusted by selecting the tower and rotating the control corresponding to the tower; further, the fine adjustment angle is updated to the three-dimensional model of the tower or tower machine account information, the fine adjustment angle is finally stored in the server, the fine adjustment function is added in the line preview, the tower is selected by clicking, if the angle is not appropriate, the function of fine adjustment of the tower angle can be achieved by rotating a control beside the tower, the angle after fine adjustment is bound to the tower machine account information, and then the database of the server is stored, so that the tower is rendered more accurately.
Examples 4,
The visualization method according to the embodiments 1 to 3, for the longitude and latitude coordinates of the location of the tower, the front-end encryption is used, that is, the encryption is performed according to the defined encryption rule, and the encryption rule is finally transmitted to the server, the encryption rule may be set by selecting different encryption levels according to different application scenarios, and the existing encryption rule is selected, which does not belong to the protection of the present invention.
Examples 5,
According to the visualization method in the embodiments 1 to 4, for the attribute information of the tower, front-end encryption is used, that is, encryption is performed according to defined encryption rules, and the encryption rules are finally transmitted to the server, the encryption rules can be set by selecting different encryption levels according to different application scenarios, and the existing encryption rules are selected, and the encryption rules do not belong to the protection of the present invention.
Examples 6,
In the visualization method according to embodiment 1, the map in step 2) is formed by downloading map tiles, and the invention integrates the heaven and earth maps, because the invention is used in an intranet environment, and thus the tiles of the integrated map need to be downloaded.
In creating the three-dimensional model of the tower, the manner of deriving the gltf model includes: after the 3dmax software is used for fine modeling, a plug-in babylon of the 3dmax software is used for deriving a three-dimensional model of the tower in the gltf format.
Example 7,
The visualization method of embodiment 1, further comprising rendering of the sensor:
and adding a sensor model on the corresponding tower according to the longitude and the latitude of the tower.
Example 8,
The visualization method of embodiment 7, further comprising, autonomously cruising:
the method comprises the steps of constructing an animated motion track through ceium to obtain a CZML, converting the motion track into an autonomous cruising motion track according to the longitude and latitude of a tower, adding the motion track into a visual angle through a CzmlDataSource method, further enabling the autonomous cruising to support functions of pausing, fast forwarding, fast backing and the like, and being more convenient to operate.
Examples 9,
The visualization method as in embodiments 1-8, further comprising: lazy loading of model, in the process of rendering the gltf model, once only all rendering all models can consume very big memory space, lead to the page very stuck, so lazy loading function is indispensable, through the longitude and latitude coordinate in the page visual angle in the past, acquires the coordinate of shaft tower and judges which gltf model need be rendered in this coordinate range at page loading completion or cruise in-process:
when the gltf model is not in the visible range, the gltf model is destroyed, the memory of the browser is released, the problem of pause caused by excessive models is solved, and the page is smoother.
Examples 10,
The visualization method according to embodiments 1-9, further comprising the interactive function of the page:
the user interactively operates the three-dimensional scene to rotate, zoom and drag the three-dimensional scene;
the interactive operation further comprises: the method comprises the steps that a three-dimensional model of a tower is clicked to pop out longitude and latitude coordinates of the position where the tower is located and attribute information of the tower;
the data monitored by the corresponding sensor in real time is popped up by clicking the three-dimensional model of the tower, so that good interactive experience and visual effect are achieved. As shown in fig. 3.
Examples 11,
A visualization system implementing the three-dimensional panoramic digital twin power transmission channel visualization method of embodiments 1-10, the system comprising: the system comprises a three-dimensional model, a point cloud model, a pole tower ledger data module, a sensor data module, a server and a web end;
the three-dimensional model is a three-dimensional model of the tower in the visualization method;
the point cloud model is a model obtained by correspondingly rendering a three-dimensional model of a tower;
the pole tower ledger data module is used for storing and updating longitude and latitude coordinates of the location of the pole tower, attribute information of the pole tower and corner data in real time;
the sensor data module is used for transmitting the monitoring data of the sensor on the tower to a server in real time;
the web end is used for displaying a three-dimensional scene in the target power transmission channel in real time.
The web side in the visualization system is further configured to: the user is realized through page interaction,
the interactive operation of the three-dimensional scene realizes rotation, zooming and dragging of the three-dimensional scene;
the interactive operation further comprises: the method comprises the steps that a three-dimensional model of a tower is clicked to pop out longitude and latitude coordinates of the position where the tower is located and attribute information of the tower;
and popping up data monitored by the corresponding sensor in real time by clicking the three-dimensional model of the tower.
Claims (10)
1. A three-dimensional panoramic digital twin power transmission channel visualization method is characterized by comprising the following steps:
creating a three-dimensional model of a tower:
correspondingly creating a three-dimensional model of the tower according to the type of the tower distributed on the power transmission channel, deriving a gltf model, and correspondingly loading point cloud data of the tower by the gltf model;
collecting tower information:
the information of the towers distributed on the real power transmission channel is collected, and the information comprises the following steps: longitude and latitude coordinates of the position of the tower and attribute information of the tower; the attribute information of the tower comprises: type information of the tower and maintenance information of the tower;
rendering the three-dimensional model of the tower:
1) Determining the rotation angle of the tower: known as A' (x) 1 ,y 1 )、B＇(x 2 ,y 2 ),C＇(x 3 ,y 3 ) The three points are three adjacent towers, and whether the tower is a corner tower is judged:
when the rod is in useWhen the tower is not a corner tower, the east-west longitude direction is taken as an X axis, and the angle of the A' tower is Math 1 ,y 1 )/(Math.PI/180)；
When the tower is a corner tower, the calculation mode is as follows:
the angle of the a 'B' segment to the X axis is angl1= math 2 -y 1 ),(x 2 -x 1 ))/(Math.PI/180)；
Angle of B 'C' segment to X axis is angle 2= math 3 -y 2 ),(x 3 -x 2 ))/(Math.PI/180)；
The angle of the B' tower is (angl 1+ angl2+ 90)/2
The angles of all the towers are obtained by analogy;
obtaining the average value of the intermediate angles of the three points according to calculation, wherein the average value is the rotation angle of the angle tower, and storing the rotation angle of the angle tower for directly calling the rotation angle when the tower is rendered again in the follow-up process;
2) Map positioning of tower
Rendering the map by using the cecum according to the longitude and latitude coordinates of the position of the tower, the type information of the tower and the corresponding rotation angle of the tower;
3) Rendering the electric wires between the adjacent towers to form digital twinning simulation:
firstly, calculating the position coordinates of the insulator on the tower relative to a reference point;
then, the longitude, latitude and height of the insulator are calculated:
insulator latitude = center.math.todegrees (center.cartogric.fromcrotesian (B). Longitude). ToF ixed (10);
longitude of insulator = center.math.todegrees (center.cartogrpic.fromcartian (B).
Insulator height = center.
Wherein B is an angle variable of the rotation of the electric wire around the axis of the target point tower;
and drawing a parabola between the two towers according to the longitude, latitude and height data to finally form a three-dimensional scene.
2. The visualization method of the three-dimensional panoramic digital twin power transmission channel according to claim 1, wherein when a parabola is drawn, the ratio of the highest point of the incoming wire to the total distance is transmitted to control the digital twin simulation of the change of the radian of the parabola of the line caused by the expansion with heat and the contraction with cold due to the change of the temperature.
3. The visualization method of the three-dimensional panoramic digital twin power transmission channel according to claim 1, wherein in the step 2), the ceium supports a Cartesian coordinate system, and the longitude and latitude of the pole tower are converted into the Cartesian coordinate system through a Cartesian3 method of the ceium; the batch loading of the gltf file is completed by the model InstanceCollection method of ceium.
4. The visualization method for the three-dimensional panoramic digital twin transmission channel according to claim 1, wherein after the step 2), the rotation angle of a tower is finely adjusted by selecting the tower and rotating a control corresponding to the tower; and further, updating the fine adjustment angle to a three-dimensional model of the tower or tower ledger information, and finally storing the information in a server.
5. The visualization method of the three-dimensional panoramic digital twin power transmission channel according to claim 1, wherein the longitude and latitude coordinates of the location of the tower are encrypted by a front end and finally transmitted to a server.
6. The visualization method of the three-dimensional panoramic digital twin power transmission channel according to claim 1, wherein attribute information of the tower is encrypted by a front end and finally transmitted to a server.
7. The visualization method for the three-dimensional panoramic digital twin power transmission channel according to claim 1, wherein the method for judging whether the tower is a corner tower is adoptedComprises the following steps: known as A' (x) 1 ,y 1 )、B＇(x 2 ,y 2 ),C＇(x 3 ,y 3 ) The three points are three adjacent poles and towers;
the angle of the a 'B' segment to the X axis is angl1= math 2 -y 1 ),(x 2 -x 1 ))/(Math.PI/180)；
Angle of B 'C' segment to X axis is angle 2= math 3 -y 2 ),(x 3 -x 2 ))/(Math.PI/180)；
Comparison of angl1 and angl 2:
and if the absolute value of the subtraction is greater than 5 degrees, the tower corresponding to the middle B' is judged to be a corner tower.
8. The three-dimensional panoramic digital twin power transmission channel visualization method according to claim 1, wherein the map in step 2) is formed by map tile downloading;
in creating the three-dimensional model of the tower, the manner of deriving the gltf model includes: after the 3dmax software is used for fine modeling, a three-dimensional model of the tower in the gltf format is derived by using a plug-in babylon of the 3dmax software;
preferably, the visualization method further includes rendering the sensor:
adding a sensor model on the corresponding tower according to the longitude and the latitude of the tower;
preferably, the visualization method further comprises the following steps:
constructing an animated motion track by ceium-derived czml, and then adding the motion track into a visual angle by a CzmlDataSource method;
preferably, the visualization method further comprises: lazy loading of the model, namely acquiring coordinates of a tower to judge which gltf models need to be rendered in the coordinate range by page loading completion or a cruising process through longitude and latitude coordinates in a past page view angle:
when the gltf model is not in the visible range, the gltf model is destroyed.
9. The method for visualizing the three-dimensional panoramic digital twin power transmission channel according to claim 1, further comprising the following page interaction functions:
the user performs interactive operation on the three-dimensional scene to realize rotation, zooming and dragging of the three-dimensional scene;
the interaction further comprises: popping up longitude and latitude coordinates of the position of a tower and attribute information of the tower by clicking a three-dimensional model of the tower;
and popping up data monitored by the corresponding sensor in real time by clicking the three-dimensional model of the tower.
10. A visualization system for implementing the visualization method of the three-dimensional panoramic digital twin power transmission channel according to any one of claims 1 to 9, wherein the system comprises: the system comprises a three-dimensional model, a point cloud model, a pole tower ledger data module, a sensor data module, a server and a web end;
the three-dimensional model is the three-dimensional model of the tower in the visualization method;
the point cloud model is a model obtained by correspondingly rendering a three-dimensional model of the tower;
the pole tower ledger data module is used for storing and updating longitude and latitude coordinates of the location of the pole tower, attribute information of the pole tower and corner data in real time;
the sensor data module is used for transmitting the monitoring data of the sensor on the tower to a server in real time;
the web terminal is used for displaying a three-dimensional scene in the target power transmission channel in real time;
preferably, the web end in the visualization system is further configured to: the user is realized through page interaction,
the interactive operation of the three-dimensional scene realizes rotation, zooming and dragging of the three-dimensional scene;
the interactive operation further comprises: popping up longitude and latitude coordinates of the position of a tower and attribute information of the tower by clicking a three-dimensional model of the tower;
and popping up data monitored by the corresponding sensor in real time by clicking the three-dimensional model of the tower.
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| CN115665213A (en) * | 2022-12-28 | 2023-01-31 | 佛山电力设计院有限公司 | Digital twin system of new equipment on-line commissioning base |
| CN115859689A (en) * | 2023-02-15 | 2023-03-28 | 江苏星湖科技有限公司 | Panoramic visualization digital twin application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115665213A (en) * | 2022-12-28 | 2023-01-31 | 佛山电力设计院有限公司 | Digital twin system of new equipment on-line commissioning base |
| CN115665213B (en) * | 2022-12-28 | 2023-03-10 | 佛山电力设计院有限公司 | Digital twin system of new equipment on-line commissioning base |
| CN115859689A (en) * | 2023-02-15 | 2023-03-28 | 江苏星湖科技有限公司 | Panoramic visualization digital twin application method |
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