CN106646509B - A kind of shaft tower slope protection Damage Assessment method based on outdoor scene point cloud data - Google Patents
A kind of shaft tower slope protection Damage Assessment method based on outdoor scene point cloud data Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
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Abstract
A kind of shaft tower slope protection Damage Assessment method based on outdoor scene point cloud data belongs to monitoring field.Then it utilizes laser radar acquisition technique, the point cloud data of high-precision, high density discrete point form is obtained, to obtain the three-dimensional spatial information on target scene surface by setting up laser three-dimensional scanning equipment on ground；When carrying out security evaluation to pole and tower foundation, pole and tower foundation point is chosen in point cloud chart first after de-noising, dangerous point is determined according to landforms actual conditions, utilize the fundamental measurement function in professional treatment software detection module, vertical distance between Fundamentals of Measurement point and dangerous point, horizontal distance between Fundamentals of Measurement point and dangerous point, and then obtain the vector angular measurement between basic point and dangerous point.Three-dimensional non-contact range measurement may be implemented in technical solution measurement accuracy with higher, and measurement result is credible, can meet engineering survey demand.It can be widely used for the operation and maintenance and monitoring field of overhead transmission line, shaft tower.
Description
Technical field
The invention belongs to monitor field more particularly to a kind of monitoring method for electric power transmission shaft tower slope protection state.
Background technique
With the rapid development of the communication technology, computer networking technology and digital video technology, video monitor is in electric power
It is widely used in system day-to-day operation.
It is seen according to live operational effect, remote wireless video monitoring system improves Maintenance of Electric Transmission Line using strong
Technical level, but there is the deficiencies of processing of not energetic, follow-up is limited.
For power transmission line corridor, since geological conditions, weathering, water wash away and the factors such as road, water conservancy construction, out
Existing measures and describes effect, line corridor danger analyte detection and other effects limited, video monitor phenomena such as collapsing, come down, being displaced
The deficiencies of though system has played certain function, not energetic there are monitoring result；Regularly manual inspection workload is very
Greatly, it is limited that obtain information content limited by configuration tool, cannot be supplied to that operation and maintenance department is intuitive, accurate line corridor state
Data.
The presence of these phenomenons seriously threatens the safe operation of transmission line of electricity.Therefore, it is necessary to obtain accurate route
Corridor scene state data realize that line corridor defect effectively manages.
As the transmission tower of important equipment in transmission line of electricity, the detection of safe condition is extremely important, and has very bright
True regulation.
The tour of 5.3.2 pole tower and basis in " power distribution network operating standard " (Q/GDW 519-2010):
A) whether shaft tower tilts, is displaced, and shaft tower route deflection center should not exceed 0.1m, and the inclination of concrete bar should not exceed 15/
1000, angle pole does not answer inside overturning angle, and terminal pole does not answer guiding line to roll tiltedly, and rolling to bracing wire tiltedly should be less than 0.2m；
5.3.3 saves the walkaround inspection of cross-arm, fitting, insulator:
B) cross-arm tilted upward, left and right deflection should not exceed the 2% of cross-arm length.
It is provided in the standards of grading E6 table of " power distribution network operating standard " (Q/GDW 519-2010): cement pole gradient
(including amount of deflection) < 1.5%, double rod takes a step to should not exceed 30mm.Iron tower incline degree < 0.5% (is suitable for 50m or more height
Steel tower) or < 1.0% (being suitable for 50m or less height steel tower).
When the slope protection occurrence of large-area landslide of route and pole and tower foundation nearby change, the safety fortune of shaft tower can be all influenced
Row, to such defect suffer from specific regulation 5.3.2 shaft tower and basis tour: c) basis whether there is or not damage, sinking, on pull out,
Whether whether there is or not excavations or depression, shaft tower buried depth to meet the requirements for surrounding soil；D) whether there is or not the possibility being flooded, water rushes, flood controls for shaft tower
Whether there is or not damages, collapsing for facility.If disadvantageous changes, which nearby occur, for pole and tower foundation should calculate the distance at disadvantageous changes to pole and tower foundation,
Successively carry out the severity of qualitative defect；When occurrence of large-area landslide, need to calculate the earth volume of landslide, thus to repair work
Offer foundation is provided.
Currently, theodolite and total station can realize the measurement of shaft tower gradient, but need in the detecting instrument of mainstream
Cross line and fair line road direction set up instrument, if site contour is impermissible for setting up instrument in cross line or fair line road direction,
It is difficult to realize the gradient measurement of shaft tower, is needed in measurement through eyepiece reconnaissance, human error will also result in measurement accuracy
Reduction；For cross-arm gradient and insulator gradient, theodolite and total station are also difficult to measure.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of shaft tower slope protection Damage Assessment based on outdoor scene point cloud data
Method, using radar imaging technology, is line corridor, the control of electric power yellow line, construction danger in the monitoring of transmission line of electricity scene
Danger point control etc., which is prevented and reduced natural disasters, provides the technological means of one kind newly；Three-dimensional non-contact range measurement, measurement may be implemented in it
As a result it can compare with conventional total stations test result, poor small, measurement accuracy with higher, measurement result is credible, can meet
Engineering survey demand.
The technical scheme is that providing a kind of shaft tower slope protection Damage Assessment method based on outdoor scene point cloud data, wrap
Include by ground set up laser three-dimensional scanning equipment, then utilize laser radar acquisition technique, obtain high-precision, high density from
The point cloud data of scatterplot form, so that the three-dimensional spatial information on target scene surface is obtained, it is characterized in that:
1) preparation before measurand scanning:
Under the premise of guaranteeing intervisibility, according to the spatial distribution of measurand, form, scanning accuracy, resolution ratio, four chow rings
Scanning site location and Splicing model that border and landform, topography determine etc. determine scanning website, then establish coordinate system
And work out scanning embodiment.It is assumed that a coordinate system, finds out 3 points of A, B, C in the coordinate system according to traverse survey mode measurement
In coordinate；Prepare measuring instrument and spanning equipment, scanning website is determined according to sweeping scheme and lays target point；
2) parameter setting and scan operation:
System parameter is configured before scanning；System parameter includes at least option of finding a view, unit, video mode, is
System language；Then it establishes survey station and survey station parameter is configured；Completion is built a station and is swept after work according to scanning scene settings selection
Region is retouched, scanning survey, acquisition point data and image data are started；Specific sweep parameter passes through basic setup and advanced setting
To set and edit；Then operation is scanned to measurand；After the completion of scanning, need to check whether scanning is completed and swept
It whether correct retouches parameter setting, judges errorless rear preservation scan data；After the scan data of last scanning website is read in, repeat
Aforesaid operations step can carry out the scanning work of new scanning survey station；
3) scan data is handled: "
Obtained measurement data is sorted out, splices condition according to scheduled connecting method inspection, arranges and participate in splicing
With the measurement control point data information of data processing；Using professional treatment software, scan data is denoised and is detected；First
The original point cloud data for choosing object imports in professional treatment software, recycles the point cloud editting function in professional treatment software
Noise point is eliminated, smooth, clean point cloud chart is obtained, on the point cloud chart after de-noising realize distance, angle, area, volume,
The operation of modeling；
In scanning process, when scanning and target point being arranged, need to scan backsight point in favor of orienting, therefore each scanning
Intervisibility is allowed between survey station point；In order to scan target, scanning website and target website will also guarantee intervisibility；In cloth
It is logical between website to guarantee if to fully take into account various situations according to terrain when scanning survey website and target point
Depending on；
The shaft tower slope protection Damage Assessment method based on outdoor scene point cloud data may be implemented three-dimensional non-contact distance and survey
Amount, measurement result can compare with conventional total stations test result, and poor small, measurement accuracy with higher, measurement result can
Letter, can meet engineering survey demand.
Specifically, the option of finding a view includes the mode and automatic camera of the diameter of ball, quick scanning target, it is described
Unit includes angular unit and length unit, and the video mode includes that scene is real-time or photographing mode.
Specifically, the professional treatment software is polyworks software, the polyworks software is included at least
Alignment module, detection module, editor module and reverse-engineering module；The detection module of polyworks software can measure distance,
Angle, area, volume etc.；The D modeling function of complicated point cloud chart may be implemented in editor module in polyworks software.
Specifically, the shaft tower slope protection Damage Assessment method based on outdoor scene point cloud data, carries out to pole and tower foundation
It is chosen when security evaluation, in the point cloud chart first after de-noising on pole and tower foundation a bit, then is occurring to click one at disadvantageous changes
Point；Using the fundamental measurement function in professional treatment software detection module, the height difference of two o'clock is measured, as pole and tower foundation is from danger
The distance of the vertical direction of point；The horizontal distance between two o'clock, as pole and tower foundation to dangerous point are measured with same method
Horizontal distance.
Specifically, the shaft tower slope protection Damage Assessment method based on outdoor scene point cloud data, carries out to pole and tower foundation
When security evaluation, pole and tower foundation point is chosen in the point cloud chart first after de-noising, determines dangerous point according to landforms actual conditions, benefit
With the fundamental measurement function in professional treatment software detection module, vertical distance between Fundamentals of Measurement point and dangerous point, measurement
Horizontal distance between basic point and dangerous point, and then obtain the vector angular measurement between basic point and dangerous point.
Further, the laser three-dimensional scanning equipment constitutes the information acquisition module of laser radar monitoring system,
Main task includes the initialization of the hardware initialization of laser radar, holder, and needs to be adopted according to the setting of physical device situation
Collect parameter and control parameter, the initialization of laser radar opens laser radar, and enters acquisition mode, and display monitored picture is simultaneously
Start cloud.
Specifically, the acquisition parameter and control parameter, including serial port shared by laser radar and holder, laser radar
With the respective Transmission bit rate of holder, holder revolving speed and initial angle degree parameter.
Compared with the prior art, the invention has the advantages that
1. obtaining point cloud chart using laser three-dimensional scanning equipment, it can be achieved that three-dimensional non-contact range measurement, measurement result
It can compare with conventional total stations test result, poor small, measurement accuracy with higher, measurement result is credible, can meet engineering
Measurement demand；
2. utilizing radar imaging technology, prevents and reduces natural disasters and mention for line corridor, the control of electric power yellow line, the control of construction risk point etc.
For the technological means of one kind newly；
3. ground laser radar system has the characteristics that detection range is remote, round-the-clock, round-the-clock, can detect day and night
Target, and not by the blocking of mist, rain,.
Detailed description of the invention
Fig. 1 is ground laser radar system structure diagram；
Fig. 2 is laser monitoring system block schematic illustration of the present invention；
Fig. 3 is the flow diagram that the present invention carries out security evaluation to pole and tower foundation；
Fig. 4 is the schematic illustration that the present invention carries out security evaluation to pole and tower foundation；
Fig. 5 (a) is the selection schematic diagram of pole and tower foundation point and dangerous point of the present invention；
Fig. 5 (b) is the instrumentation plan of vertical distance and horizontal distance of the present invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
In Fig. 1, ground laser radar system is by two dimensional laser scanning instrument, scanner rotating platform, software control platform, number
It is constituted according to processing platform and power supply and other accessory devices.
Mainly there are pulsed and phase type in ground laser radar imaging technique.Wherein pulsed is by scan control module
Control probe in two synchronous reflection mirror quickly and orderlies rotation, the laser pulse that laser pulse emission device is issued according to
It is secondary to targeted scans, distance-measurement module can calculate each laser pulse from transmitter port to target object on return again to
The time T of transmitter port calculates on target object the reflected intensity I of each point and laser emitter to target object
Distance S；Phase type is the optical signal for emitting measured target a Sine Modulated by laser, receives the light that target is reflected back
Signal, the phase difference △ φ between measurement transmitting optical signal and reception optical signal, obtains the time difference of trip signal, calculates
The distance S of target, i.e. S=C* △ φ/π f0 (f0 is Laser Modulation frequency, and C is the light velocity).Laser scanning system can measure mesh
Mark horizontal direction value α of each point in three-dimensional system of coordinate and zenith distance value θ on object.Above-mentioned data S, α, θ are used to determine mesh
The D coordinates value of each point on object is marked, the point cloud that I is used to obtain to laser radar system is adapted to color.
With the rapid development of economy, the running environment of transmission line of electricity is worsening, trees, room in power transmission line corridor
Room, road, city-building, mine is dug in quarrying, construction increases significantly the destruction of route, is constituted to route and safe operation very big
Threat.Laser infrared radar imaging on-line monitoring system mainly for dangerous point, construction site, electric power yellow line it is real-time monitoring and
Intelligent diagnostics function.
The design of laser monitoring system, so that occurring under any abnormal conditions, can will be from monitoring scene
System monitoring finds and makes analysis processing in time, and relevant information is passed.Therefore the analysis of its function should be from prison
Prosecutor formula, scene analysis and information transfer directions are started with, and are targetedly designed.
In Fig. 2, the modules in laser monitoring system are carried out respectively simply to describe explanation.
(1) information acquisition module (ground laser radar system or laser radar)
The influence of the main monitored environment of information acquisition module, such as the landslide of debris flow early-warning, rainfall disaster alarm, roadbed
Deng, can be used the technologies such as physical sensors, camera, infrared shooting, laser radar acquisition data.We use laser herein
Radar is as acquisition equipment, therefore the main task of this module includes the initialization of the hardware initialization of laser radar, holder,
And need to be arranged according to physical device situation acquisition parameter and control parameter, such as serial port shared by laser radar and holder,
Each Transmission bit rate, holder revolving speed and initial angle degree etc.；The initialization of laser radar opens laser radar, and enters acquisition
Mode shows monitored picture and starts cloud.
(2) message processing module (industrial personal computer)
The module handles collected point cloud data, the pretreatment including data, and denoising and processing and processing walk
Suddenly, redundancy is rejected, converts it to the information for being more suitable for doing analysis and early warning.Then a cloud is registrated, is generallyd use
ICP method for registering and its deformation do standard under point cloud data coordinate unification a to coordinate system for the early warning analysis of next step
It is standby.
(3) analysis and early warning module (according to)
Mainly the information data of the Disaster Events such as potentially dangerous section, the high-incidence section of accident is analyzed, and according to setting
Fixed rule judges automatically event, sends corresponding affair alarm.
(4) information transmission modular (wired or wireless data transmission network)
For the module, main task is that the disaster information for obtaining system is issued.Above-mentioned functional module relates to
And multiple research fields, including ICP registration, three-dimensional reconstruction, Point Cloud Processing, pattern-recognition, computational geometry, network communication
Technology, COM serial port programming technique, data storage technology etc..
Design focal point is placed on Point Cloud Processing to the technical program and what fast volume based on dispersion point cloud calculated grinds
Study carefully and realize, while in order to enable a system to run substantially and have certain practical value, it is also necessary to network communication machine
System and information storage module carry out simple designs and realization.
The main processing routine of the technical program all concentrates on information early warning module (i.e. industrial personal computer), and industrial personal computer uses two
It is communicated respectively with laser radar and holder in a serial ports, then data transmission module is transferred information to by another serial ports
On GPRS DTU (General Packet Radio Service Data Transfer unit, data transmission module).
Industrial personal computer is communicated by COM3 mouthfuls with holder, and the operation such as rotation angle, rotation speed, initial position of holder is controlled
Information；Unlatching, acquisition and the closing of laser radar are controlled by COM port or COM device or COM1；It is responsible for controlling GPRS DTU module by COM2 serial ports
Send out warning information；After setting holder by COM3, holder runs laser radar with specified rotation angle and speed.
Laser radar is started to work, and system periodically reads in point cloud data from COM port or COM device or COM1.By point cloud pretreatment, ICP
After the earlier processing such as (Internet Content Provider, Web content service provider) or coordinate conversion, warning module will be same
Step obtains these data, approaches moving region point model by cloud difference follow-up moving object, and using three-dimensional convex closure, calculates
Model volume and moving displacement determine landslide grade according to related specifications file, then transmit mould by COM2 mouthfuls of notification datas
Warning information is sent specified place by GPRS DTU.
When the slope protection occurrence of large-area landslide of route and pole and tower foundation nearby change, the safety fortune of shaft tower can be all influenced
Row, to such defect suffer from specific regulation 5.3.2 shaft tower and basis tour: c) basis whether there is or not damage, sinking, on pull out,
Whether whether there is or not excavations or depression, shaft tower buried depth to meet the requirements for surrounding soil；D) whether there is or not the possibility being flooded, water rushes, flood controls for shaft tower
Whether there is or not damages, collapsing for facility.If disadvantageous changes, which nearby occur, for pole and tower foundation should calculate the distance at disadvantageous changes to pole and tower foundation,
Successively carry out the severity of qualitative defect；When occurrence of large-area landslide, need to calculate the earth volume of landslide, thus to repair work
Offer foundation is provided.
Laser three-dimensional scanning equipment in the technical program constitutes the information acquisition module of laser radar monitoring system, master
Wanting task includes the initialization of the hardware initialization of laser radar, holder, and needs to be arranged according to physical device situation and acquire
Parameter and control parameter, the initialization of laser radar open laser radar, and enter acquisition mode, show monitored picture and open
Dynamic cloud.
Above-mentioned acquisition parameter and control parameter, including serial port shared by laser radar and holder, laser radar and holder
Respective Transmission bit rate, holder revolving speed and initial angle degree parameter.
Security evaluation, process and principle such as institute in Fig. 3, Fig. 4 and Fig. 5 (a), Fig. 5 (b) are carried out to pole and tower foundation
Show.
Technical solution of the present invention provides a kind of shaft tower slope protection Damage Assessment method based on outdoor scene point cloud data, packet
Include by ground set up laser three-dimensional scanning equipment, then utilize laser radar acquisition technique, obtain high-precision, high density from
The point cloud data of scatterplot form, to obtain the three-dimensional spatial information on target scene surface, inventive point is:
1) preparation before measurand scanning:
Under the premise of guaranteeing intervisibility, according to the spatial distribution of measurand, form, scanning accuracy, resolution ratio, four chow rings
Scanning site location and Splicing model that border and landform, topography determine etc. determine scanning website, then establish coordinate system
And work out scanning embodiment.It is assumed that a coordinate system, finds out 3 points of A, B, C in the coordinate system according to traverse survey mode measurement
In coordinate；Prepare measuring instrument and spanning equipment, scanning website is determined according to sweeping scheme and lays target point；
2) parameter setting and scan operation:
System parameter is configured before scanning；System parameter includes at least option of finding a view, unit, video mode, is
System language；Then it establishes survey station and survey station parameter is configured；Completion is built a station and is swept after work according to scanning scene settings selection
Region is retouched, scanning survey, acquisition point data and image data are started；Specific sweep parameter passes through basic setup and advanced setting
To set and edit；Then operation is scanned to measurand；After the completion of scanning, need to check whether scanning is completed and swept
It whether correct retouches parameter setting, judges errorless rear preservation scan data；After the scan data of last scanning website is read in, repeat
Aforesaid operations step can carry out the scanning work of new scanning survey station；
3) scan data is handled: "
Obtained measurement data is sorted out, splices condition according to scheduled connecting method inspection, arranges and participate in splicing
With the measurement control point data information of data processing；Using professional treatment software, scan data is denoised and is detected；First
The original point cloud data for choosing object imports in professional treatment software, recycles the point cloud editting function in professional treatment software
Noise point is eliminated, smooth, clean point cloud chart is obtained, on the point cloud chart after de-noising realize distance, angle, area, volume,
The operation of modeling；
In scanning process, when scanning and target point being arranged, need to scan backsight point in favor of orienting, therefore each scanning
Intervisibility is allowed between survey station point；In order to scan target, scanning website and target website will also guarantee intervisibility；In cloth
It is logical between website to guarantee if to fully take into account various situations according to terrain when scanning survey website and target point
Depending on；
The shaft tower slope protection Damage Assessment method based on outdoor scene point cloud data may be implemented three-dimensional non-contact distance and survey
Amount, measurement result can compare with conventional total stations test result, and poor small, measurement accuracy with higher, measurement result can
Letter, can meet engineering survey demand.
Specifically, the option of finding a view includes the mode and automatic camera of the diameter of ball, quick scanning target, it is described
Unit includes angular unit and length unit, and the video mode includes that scene is real-time or photographing mode.
Further, the professional treatment software is polyworks software, and the polyworks software at least wraps
Containing alignment module, detection module, editor module and reverse-engineering module；The detection module of polyworks software can measure away from
From, angle, area, volume etc.；The three-dimensional modeling function of complicated point cloud chart may be implemented in editor module in polyworks software
Energy.
Specifically as shown in Fig. 3, Fig. 4 and Fig. 5 (a) and Fig. 5 (b), based on outdoor scene point cloud data described in the technical program
Shaft tower slope protection Damage Assessment method, chosen when carrying out security evaluation to pole and tower foundation, in the point cloud chart first after de-noising
On pole and tower foundation a bit (being indicated in figure with point1), then occurring to click a bit at disadvantageous changes (with point2 table in figure
Show)；Using the fundamental measurement function in professional treatment software detection module, the height difference of two o'clock is measured, as pole and tower foundation is from danger
The distance for the vertical direction nearly put；The horizontal distance between two o'clock, as pole and tower foundation to danger are measured with same method
The horizontal distance of point.
In other words, the shaft tower slope protection Damage Assessment method described in the technical program based on outdoor scene point cloud data, to bar
When tower foundation carries out security evaluation, pole and tower foundation point is chosen in the point cloud chart first after de-noising, it is true according to landforms actual conditions
Determine dangerous point, it is perpendicular between Fundamentals of Measurement point and dangerous point using the fundamental measurement function in professional treatment software detection module
Straight distance, the horizontal distance between Fundamentals of Measurement point and dangerous point, and then obtain the vector angle between basic point and dangerous point
Measurement result.
Compared with traditional measuring technique, laser infrared radar imaging technology can accurately be realized many important in the power system
Parameter measurement, such as: cable space minimum clearance, insulator gradient, shaft tower gradient etc..Especially in the sky of conducting wire
Between in minimum clearance measurement, the precision of measurement is up to grade, measurement accuracy with higher.The gradient of insulator is used
Currently used measuring technique is difficult to realize, but laser infrared radar imaging technology intuitive, image can measure inclining for insulator
Gradient；Laser infrared radar imaging system can accurately choose each point, to increase measurement when measuring shaft tower gradient
Accuracy.
It invention can be widely used in the operation and maintenance and monitoring field of overhead transmission line, shaft tower.
Claims (5)
1. a kind of shaft tower slope protection Damage Assessment method based on outdoor scene point cloud data, including swept by setting up laser three-D on ground
Equipment is retouched, laser radar acquisition technique is then utilized, obtains the point cloud data of high-precision, high density discrete point form, thus
To the three-dimensional spatial information on target scene surface, it is characterized in that:
1) preparation before measurand scanning:
Under the premise of guaranteeing intervisibility, according to the spatial distribution of measurand, form, scanning accuracy, resolution ratio, surrounding environment and
The scanning site location and Splicing model that landform, topography determine determine scanning website, then establish coordinate system and work out
Scan embodiment；Prepare measuring instrument and spanning equipment, scanning website is determined according to sweeping scheme and lays target point；
2) parameter setting and scan operation:
System parameter is configured before scanning；System parameter includes at least find a view option, unit, video mode, system language
Speech；Then it establishes survey station and survey station parameter is configured；Completion is built a station after work according to scanning scene settings selection scanning area
Domain starts scanning survey, acquisition point data and image data；Specific sweep parameter is set by basic setup with advanced setting
Fixed and editor；Then operation is scanned to measurand；After the completion of scanning, need to check ginseng is completed and scanned to scanning whether
Whether number setting is correct, judges errorless rear preservation scan data；After the scan data of last scanning website is read in, repeat above-mentioned
Operating procedure can carry out the scanning work of new scanning survey station；
3) scan data is handled:
Obtained measurement data is sorted out, splices condition according to scheduled connecting method inspection, arranges and participates in splicing sum number
According to the measurement control point data information of processing；Using professional treatment software, scan data is denoised and is detected；It chooses first
The original point cloud data of object imports in professional treatment software, recycles the point cloud editting function in professional treatment software that will make an uproar
The point of articulation is eliminated, and smooth, clean point cloud chart is obtained, and distance, angle, area, volume, modeling are realized on the point cloud chart after de-noising
Operation；
In scanning process, when scanning and target point being arranged, need to scan backsight point in favor of orienting, therefore each scanning survey station
Intervisibility is allowed between point；In order to scan target, scanning website and target website will also guarantee intervisibility；It is swept in laying
When retouching measurement website and target point, various situations are fully taken into account, according to terrain to guarantee the intervisibility between website；
Wherein, it is chosen when carrying out security evaluation to pole and tower foundation, in the point cloud chart first after de-noising on pole and tower foundation a bit,
Occurring to click a bit at disadvantageous changes again；Using the fundamental measurement function in professional treatment software detection module, two o'clock is measured
Height difference, as pole and tower foundation is with a distance from the vertical direction of dangerous point；The level between two o'clock is measured with same method
Distance, as pole and tower foundation to dangerous point horizontal distance；
Further, when carrying out security evaluation to pole and tower foundation, pole and tower foundation point is chosen in the point cloud chart first after de-noising,
Dangerous point is determined according to landforms actual conditions, utilizes the fundamental measurement function in professional treatment software detection module, Fundamentals of Measurement
Vertical distance between point and dangerous point, the horizontal distance between Fundamentals of Measurement point and dangerous point, and then obtain basic point and danger
Vector angular measurement between the point of danger；
Three-dimensional non-contact range measurement may be implemented in the shaft tower slope protection Damage Assessment method based on outdoor scene point cloud data,
Its measurement result can compare with conventional total stations test result, poor small, and measurement accuracy with higher, measurement result is credible,
Engineering survey demand can be met.
2. the shaft tower slope protection Damage Assessment method described in accordance with the claim 1 based on outdoor scene point cloud data, it is characterized in that described
Option of finding a view include ball diameter, quickly scanning target mode and automatic camera, the unit include angular unit and
Length unit, the video mode include that scene is real-time or photographing mode.
3. the shaft tower slope protection Damage Assessment method described in accordance with the claim 1 based on outdoor scene point cloud data, it is characterized in that described
Professional treatment software be polyworks software, the polyworks software include at least alignment module, detection module, volume
Collect module and reverse-engineering module；The detection module of polyworks software can measure distance, angle, area, volume；
The D modeling function of complicated point cloud chart may be implemented in editor module in polyworks software.
4. the shaft tower slope protection Damage Assessment method described in accordance with the claim 1 based on outdoor scene point cloud data, it is characterized in that described
Laser three-dimensional scanning equipment constitute laser radar monitoring system information acquisition module, main task includes laser radar
The initialization of hardware initialization, holder, and need that acquisition parameter and control parameter, laser thunder is arranged according to physical device situation
The initialization reached opens laser radar, and enters acquisition mode, shows monitored picture and starts cloud.
5. the shaft tower slope protection Damage Assessment method based on outdoor scene point cloud data according to claim 4, it is characterized in that described
Acquisition parameter and control parameter, including serial port shared by laser radar and holder, laser radar and the respective transmission wave of holder
Special rate, holder revolving speed and initial angle degree parameter.
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