CN116385656A - Cable three-dimensional presentation system and method - Google Patents
Cable three-dimensional presentation system and method Download PDFInfo
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Abstract
The invention relates to the field of intelligent cable display, in particular to a system and a method for three-dimensional cable presentation, comprising the following steps: obtaining a split conductor model obtained by reconstructing the power line along the length direction of a power line trend path by a single conductor according to a split structure; and segmenting the split conductor model to obtain a split region and a boundary region, identifying a plurality of dangerous point positions through a dangerous point detection model according to the space three-dimensional distance between the ground object point and the split conductor model of the split region, displaying the point cloud of the cross section acquired by the split conductor model according to the dangerous point positions, and displaying the integral power line trend of the split conductor model. The invention restores and presents the data acquired by the inspection more accurately and intuitively, displays the determined dangerous point position, reduces the redundancy of data calculation and improves the calculation efficiency.
Description
Technical Field
The invention relates to the field of intelligent cable display, in particular to a system and a method for three-dimensional cable display.
Background
The transmission and high-voltage overhead line is an important component of the power system, and because the high-voltage overhead line is in an exposed state because the line cannot wrap an insulating layer in order to transmit high-voltage power, the high-voltage overhead line is usually in a tower type and is in a large overhead height from the ground in order to ensure the safety of people or objects below the line, thereby forming a power channel. In order for the power tunnel to run smoothly, it is necessary to inspect the power tunnel to find risk factors such as plants growing in the power tunnel, etc.
Aiming at the inspection of the power channel, the unmanned aerial vehicle and the laser radar technology are adopted at present, a large amount of point cloud data are acquired by the unmanned aerial vehicle and the laser radar, the point cloud data are analyzed, processed and modeled, then inspection analysis is carried out, and inspection results are displayed and presented from multiple angles. As in the document with publication number CN110264575a, a three-dimensional display method for cables is disclosed, in which two three-dimensional models of coarse level and fine level are generated for each cable, and the three-dimensional models of two levels are controlled to switch by viewing distance; wherein, the three-dimensional model of coarse level is loaded into the memory, and the three-dimensional model of fine level is loaded or unloaded along with the change of the sight distance. The three-dimensional model display device has the characteristics of low requirements on the memory and the display card, good display effect and capability of smoothly displaying the three-dimensional model of the whole cable.
When the display method is used, information judgment is needed to be performed by traversing all data so as to determine whether the environment around the cable is safe or not, the calculated amount during display is large, and the dangerous point condition of the cable under the influence of the surrounding environment condition cannot be accurately displayed.
Disclosure of Invention
The invention aims to provide a three-dimensional cable presenting method for solving the problem that the situation of the surrounding environment cannot be accurately displayed due to large calculated amount during display.
The three-dimensional cable presenting method in the scheme comprises the following steps:
step 1, obtaining a split conductor model obtained by reconstructing a power line with a single conductor according to a split structure along the length direction of a power line trend path;
step 2, reconstructing the power line with a single wire according to a split structure to obtain a split wire model; segmenting the split conductor model to obtain a split region and a boundary region, and identifying a plurality of dangerous point positions through a dangerous point detection model according to the space three-dimensional distance between the ground feature point and the split conductor model of the split region;
and 3, displaying the point cloud of the cross section acquired by the split conductor model according to the dangerous point position, and displaying the trend of the whole power line of the split conductor model.
The beneficial effect of this scheme is:
the splitting area is obtained by segmentation on the splitting conductor model, the dangerous point positions are determined in the splitting area, and then the synchronous display of the trend of the whole power line and the positions of a plurality of dangerous points can be realized, so that the cable running position and the core wire arrangement position inside the cable can be more truly presented, the data collected by inspection can be more accurately and intuitively restored and presented, the determined dangerous point positions are displayed, the data calculation redundancy is reduced, and the calculation efficiency is improved.
In step 3, the dangerous points are positions with high-level objects in a transverse and longitudinal direction range on the power line trend path, and the cross-section point clouds in the windless state and the windy state are displayed for each dangerous point position.
The beneficial effects are that: aiming at cross section point cloud display at dangerous point positions, states under windless and windy conditions are respectively displayed, the power line can be inspected under different states, the state of the power line under the natural environment is restored, and the accuracy and timeliness of inspection to dangerous point results are improved.
Further, the length of the splitting area is greater than or equal to one observation section, the splitting area is provided with a plurality of observation sections, and the length of each observation section is one fifth of the distance between the power line towers.
The beneficial effects are that: the splitting area is set into a plurality of observation sections, and dangerous point positions are determined in the observation sections, so that the data volume required to be processed in inspection and observation is further reduced, and the operation speed in model display is improved.
Further, in the step 2, a current position section of the observation section on the power line is firstly judged, wherein the position section comprises a straight line section and an arc sagging section;
when the power line is in a straight line segment, acquiring a cross-section point cloud at a first length of a power line trend path by taking the dangerous point position as a center for auxiliary display;
and when the arc-shaped sagging section is adopted, uniformly acquiring cross-section point clouds at a plurality of points in a second length range of a power line trend path by taking the dangerous point position as a center for auxiliary display, wherein the second length is larger than the first length.
The beneficial effects are that: after the dangerous point is determined, the current position section of the split conductor model is judged, then cross section point cloud auxiliary display with different lengths is carried out at the dangerous point position according to the position section, surrounding conditions can be synchronously inspected after the dangerous point is inspected, the rapidity and the accuracy of inspection are improved, and the probability of missing the dangerous point is reduced.
Further, in the step 2, when the dangerous point position is determined, the real-time wind information is acquired first, whether the real-time wind information reaches a preset level is judged, and when the wind information reaches the preset level, the dangerous point position is adjusted in real time.
The beneficial effects are that: the real-time wind power information is obtained to judge whether the level is preset or not, the dangerous point position is dynamically determined in real time according to the environment state, the cross section point cloud of the dangerous point with tiny variation under the influence of the environment can be dynamically displayed, and the intelligence and the accuracy of inspection display are improved.
In step 2, when the dangerous point position is adjusted, the dangerous point position is surrounded around the high-level object by acquiring the point cloud position on the split conductor model and judging whether the distance between the conductor and the high-level object on the power line trend path is within the safety range, if so, the dangerous point position is surrounded around the high-level object.
The beneficial effects are that: through judging whether the high-level object exists or not and setting the dangerous point position around the high-level object, the dangerous point position can be inspected to the high-level area position in a focus mode, and risks can be found in time.
In step 3, after the dangerous point position is adjusted, calculating the distance value between the cross-section point cloud and the side facing the high-level object, marking the distance value on the cross-section point cloud image for display, judging whether the distance value is in a preset range, and when the distance value is in the preset range, performing obvious marking on the distance value.
The beneficial effects are that: after the dangerous point position is adjusted, calculating a distance value corresponding to one side of the split conductor model facing the high-level object, performing marking display, judging whether the distance value is located in a certain range, if so, performing obvious marking, automatically and intelligently displaying a region with larger part of risks, and improving the speed and efficiency of inspection.
In step 2, after the dangerous point position is adjusted, the geographical position and time information of the split conductor model are recorded, the times of the time information which is in the same geographical position and in the same time range are recorded, when the times are greater than a threshold value, the geographical position and the time information are marked as important adjustment targets, when the dangerous point position is determined, whether the geographical position and the time information are important adjustment targets is judged first, and if yes, the dangerous point position adjustment is directly performed.
The beneficial effects are that: the information recording is carried out on the adjusted dangerous point positions, the adjustment times in the same geographic position and the same time range are counted, the larger times are used as the basis of subsequent adjustment, and the speed of dangerous point position adjustment is improved.
In step 3, when the dangerous point position is adjusted and the distance value is within the preset range, calculating the distance between the high-level object and the surrounding point cloud except the cross section point cloud, and when the distance between the high-level object and the surrounding point cloud is larger than the set value, correcting and prompting the dangerous point position.
The beneficial effects are that: when the dangerous point is adjusted, the point cloud of the high-level object causing the risk is further judged, correction prompt is carried out, interference of some noise points can be discharged, and accuracy of determining the dangerous point is improved.
The cable three-dimensional presentation system comprises an analysis processing module and a display module, wherein the analysis processing module is used for carrying out analysis processing on the obtained split conductor model according to the cable three-dimensional presentation method, and the display module is used for presenting analysis processing results obtained by the analysis processing module.
Drawings
FIG. 1 is a block flow diagram of a cable three-dimensional rendering method according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of a stress of a power line under the action of wind in a cable three-dimensional presenting method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a division point type in a first embodiment of a cable three-dimensional rendering method according to the present invention.
Detailed Description
Further details are provided below with reference to the specific embodiments.
Example 1
The three-dimensional cable presenting method, as shown in fig. 1, comprises the following steps:
step 1, obtaining a split conductor model obtained by reconstructing a power line with a single conductor according to a split structure along the length direction of a power line trend path, wherein the split conductor model is a model established aiming at a split structure of four split and two split equally dividing of the existing power line, and is established according to key element extraction and application research of a LiDAR point cloud power channel of an unmanned aerial vehicle in the literature.
Step 2, identifying a split conductor model obtained by reconstructing the power line with a single conductor according to a split structure; the split area and the boundary area are obtained by segmentation on the split conductor model, and a plurality of dangerous point positions are identified through a dangerous point detection model according to the space three-dimensional distance between the ground object point and the split conductor model of the split area, wherein the dangerous point detection model uses the existing model, and the description is omitted. After the dangerous point is confirmed, the point closest to the power line can be determined from among the dangerous points as a dangerous point, as shown in fig. 3.
When the dangerous point position is determined, acquiring real-time wind power information, judging whether the real-time wind power information reaches a preset level, wherein the preset level is set according to actual requirements, for example, the preset level is 5, and when the wind power information reaches the preset level, the dangerous point position is adjusted in real time; when the dangerous point position is adjusted, the point cloud position on the split conductor model is obtained, whether the distance between the conductor and the high-level object on the power line trend path is within a safe range is judged, if yes, the dangerous point position surrounds the periphery of the high-level object, and if the dangerous point position is respectively located within 3 meters of the horizontal plane right above the high-level object. Wherein the point closest to the power line is a hazard point,
and 3, displaying the point cloud of the cross section obtained by the split conductor model according to the dangerous point positions, and displaying the overall power line trend of the split conductor model at the same time, wherein the dangerous point is a position with a high-level object around a power line trend path, and the point cloud of the cross section in a windless state and a windy state is displayed for each dangerous point position. The windless state refers to a three-dimensional state of the power line without being affected by external force of wind power. The windy state means that the power line swings under the action of wind force, and the three-dimensional model of the power line changes at the moment, and the stress schematic diagram is shown in figure 2. The cross section point cloud in the windy state is displayed through three-dimensional presentation, and the three-dimensional presentation can present swing positions of the point cloud with different wind power levels in the windy state, and the swing positions are calculated by the existing swing model.
After the dangerous point position is adjusted, calculating the distance value between the cross-section point cloud and the side facing the high-level object, marking the distance value on the cross-section point cloud image for display, judging whether the distance value is located in a preset range, setting the preset range according to the voltage scale under the windy and windless conditions, for example, setting the preset range under the windless condition of 110KV to be within 3m below the power line, setting the preset range under the windy condition of 110KV to be within 3.5m below the power line, and performing obvious marking on the distance value when the distance value is located in the preset range.
When the inspection is carried out on the split conductor model which is built on each power line, the number of dangerous points is determined according to the voltage scale of the power lines, the positions of the dangerous points are determined according to the number of the dangerous points, wind power information is acquired in real time, the positions of the dangerous points are adjusted according to the wind power information, the obtained high-level object is judged to carry out the position adjustment of the dangerous points, the accuracy of the position determination of the dangerous points is improved, the workload of inspection judgment calculation is reduced for the accurate dangerous point positions, the calculation speed is improved, and the inspection efficiency is higher; after the dangerous point position is accurately determined, the dangerous point position is used for carrying out cross-section point cloud interception on the split conductor model, the integral power line trend of the split conductor model and the cross-section point cloud patterns of all the dangerous points under windy and windless conditions are displayed at the same time, the distance value between the point cloud and a high-level object is calculated, the focus inspection position is intelligently displayed according to the distance value, so that inspection is faster, and inspection efficiency is improved.
Example two
The difference between the cable three-dimensional presenting method and the first embodiment is that in step 2, after the dangerous point position is adjusted, the geographical position and time information of the split conductor model are recorded, the number of times of time information which is in the same geographical position and is in the same time range is recorded, the time information is date, the time range is for example, 3 months 20 days-4 months 15 days, when the number of times is greater than a threshold value, the threshold value is set according to actual requirements, for example, the threshold value is set to be '3', the geographical position and the time information are marked as important adjustment targets, when the dangerous point position is determined, whether the geographical position and the time information are the important adjustment targets is judged first, and if yes, the dangerous point position adjustment is directly performed.
According to the embodiment, the information of the position of the dangerous point is counted, the matching comparison is directly carried out at the follow-up time according to the counted times, the calculated amount of the follow-up time of the adjustment of the dangerous point is increased, and the speed of the adjustment of the dangerous point is increased.
Example III
The difference between the cable three-dimensional presenting method and the first embodiment is that in step 3, when the dangerous point position is adjusted and the distance value is within the preset range, the point cloud distance between the high-level object and the surrounding point clouds except the cross section point cloud is calculated, and when the point cloud distance is greater than the set value, the dangerous point position is corrected and prompted.
When the inspection result display based on the split conductor model is carried out, the point cloud distance between the high-level object causing the risk and the surrounding point clouds outside the model is calculated, the dangerous point which is interfered is primarily judged according to the point cloud distance, the position of the dangerous point is corrected and prompted, the point cloud which causes the dangerous point judgment by mistake can be quickly found, and the accuracy of determining the dangerous point in the inspection process is improved.
Example IV
The cable three-dimensional presenting method is different from the first embodiment in that the length of the splitting area is greater than or equal to one observation section, the splitting area is provided with a plurality of observation sections, and the length of each observation section is one fifth of the distance between the power line towers.
In step 2, the current position section of the observation section on the power line is firstly judged, the position section comprises a straight line section and an arc-shaped sagging section, the judgment of the position section is carried out by taking a power line pole tower as a starting point, calculating horizontal angles of the straight line and the horizontal direction of two power line poles according to the Pythagorean theorem based on the vertical height difference of the power line pole tower coordinates relative to the power line pole tower coordinates at the other end of the power line trend path, determining the position section according to the extending distance of the power line pole tower along the power line trend path according to the horizontal angles, and determining the position section according to the specific corresponding relation between the horizontal angles and the extending distance.
When the power line is in a straight line segment, acquiring a cross-section point cloud at a first length of a power line trend path by taking the dangerous point position as a center for auxiliary display;
and when the arc-shaped sagging section is adopted, uniformly acquiring cross-section point clouds at a plurality of points in a second length range of a power line trend path by taking the dangerous point position as a center for auxiliary display, wherein the second length is larger than the first length.
According to the method, after the plurality of dangerous points are determined, the current position of the split conductor model is judged, the cross section point cloud is acquired around the dangerous point to assist in displaying according to the form of the current position, surrounding conditions can be synchronously inspected after the dangerous points are inspected, the rapidity and the accuracy of inspection are improved, risks at different positions are automatically and differently inspected during inspection, the probability of missing the dangerous points is reduced, and the intellectualization and the accuracy of inspection are improved.
The foregoing is merely exemplary embodiments of the present invention, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (10)
1. A method of three-dimensional presentation of a cable, comprising the steps of:
step 1, obtaining a split conductor model obtained by reconstructing a power line with a single conductor according to a split structure along the length direction of a power line trend path;
step 2, reconstructing the power line with a single wire according to a split structure to obtain a split wire model; segmenting the split conductor model to obtain a split region and a boundary region, and identifying a plurality of dangerous point positions through a dangerous point detection model according to the space three-dimensional distance between the ground feature point and the split conductor model of the split region;
and 3, displaying the point cloud of the cross section acquired by the split conductor model according to the dangerous point position, and displaying the trend of the whole power line of the split conductor model.
2. The cable three-dimensional rendering method of claim 1, wherein: in the step 2, the dangerous points are positions with high-level objects in the range of the power line trend path, and cross-section point clouds in a windless state and a windy state are displayed for each dangerous point position.
3. The cable three-dimensional rendering method of claim 2, wherein: the length of the splitting area is greater than or equal to one observation section, the splitting area is provided with a plurality of observation sections, and the length of each observation section is one fifth of the distance between the power line towers.
4. A cable three-dimensional rendering method according to claim 3, wherein: in the step 2, a current position section of the observation section on the power line is firstly judged, wherein the position section comprises a straight line section and an arc-shaped sagging section;
when the power line is in a straight line segment, acquiring a cross-section point cloud at a first length of a power line trend path by taking the dangerous point position as a center for auxiliary display;
and when the arc-shaped sagging section is adopted, uniformly acquiring cross section point clouds at a plurality of points in a second length range of the power line trend path by taking the dangerous point position as a center for auxiliary display.
5. The cable three-dimensional rendering method of claim 1, wherein: in the step 2, when the dangerous point position is determined, the real-time wind power information is acquired first, whether the real-time wind power information reaches a preset level is judged, and when the wind power information reaches the preset level, the dangerous point position is adjusted in real time.
6. The cable three-dimensional rendering method of claim 5, wherein: in the step 2, when the dangerous point position is adjusted, the dangerous point position is surrounded around the high-level object by acquiring the point cloud position on the split conductor model and judging whether the distance between the conductor and the high-level object on the power line trend path is within the safety range or not, if yes, the dangerous point position is surrounded around the high-level object.
7. The cable three-dimensional rendering method of claim 6, wherein: in the step 3, after the dangerous point position is adjusted, calculating the distance value between the cross-section point cloud and the side facing the high-level object, marking the distance value on the cross-section point cloud graph for display, judging whether the distance value is in a preset range, and when the distance value is in the preset range, performing obvious marking on the distance value.
8. The cable three-dimensional rendering method of claim 5, wherein: in the step 2, after the dangerous point position is adjusted, the geographical position and time information of the split conductor model are recorded, the times of the time information which is in the same geographical position and in the same time range are recorded, when the times are larger than a threshold value, the geographical position and the time information are marked as important adjustment targets, when the dangerous point position is determined, whether the geographical position and the time information are important adjustment targets is judged first, and if yes, the dangerous point position adjustment is directly carried out.
9. The cable three-dimensional rendering method of claim 6, wherein: in the step 3, when the dangerous point position is adjusted and the distance value is within the preset range, calculating the point cloud distance between the high-level object and the surrounding point clouds except the cross section point cloud, and when the point cloud distance is larger than the set value, correcting and prompting the dangerous point position.
10. The cable three-dimensional presentation system comprises an analysis processing module and a display module, and is characterized in that: the analysis processing module is used for analyzing and processing the obtained split conductor model according to the cable three-dimensional presentation method according to any one of claims 1-9, and the display module is used for presenting analysis processing results obtained by the analysis processing module.
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