NL2032789B1 - Wind turbine tower drum inclination detection method based on ground 3d laser scanning technology - Google Patents

Wind turbine tower drum inclination detection method based on ground 3d laser scanning technology Download PDF

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NL2032789B1
NL2032789B1 NL2032789A NL2032789A NL2032789B1 NL 2032789 B1 NL2032789 B1 NL 2032789B1 NL 2032789 A NL2032789 A NL 2032789A NL 2032789 A NL2032789 A NL 2032789A NL 2032789 B1 NL2032789 B1 NL 2032789B1
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drum
tower drum
tower
sections
ground
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NL2032789A
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Dutch (nl)
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NL2032789A (en
Inventor
Lv Baoxiong
Zhao Zhixiang
Xu Liyuan
Yang Zhenyin
Cao Junheng
Zhao Yue
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Powerchina Northwest Eng Corp Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/70—Determining position or orientation of objects or cameras
    • G06T7/73—Determining position or orientation of objects or cameras using feature-based methods
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • 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
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10028—Range image; Depth image; 3D point clouds
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30181—Earth observation
    • G06T2207/30184—Infrastructure

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Wind Motors (AREA)

Abstract

The present invention relates to a wind turbine tower drum inclination detection method based on a ground 3D laser scanning technology, including the following steps: 1) keeping an instrument in a fixed position no less than 3/2 of a tower drum height horizontally from a tower drum, and acquiring point cloud data of a 1/3 circular drum body of a vertical projection of the tower drum; 2) constructing a TIN model of the U3 circular drum body, fitting upper and lower centers of the circular tower drum, and extracting tower drum sections; 3) reducing center coordinates of the sections of the circular tower drum; and 4) calculating longitudinal and transverse inclination components and an inclination rate of the tower drum through the obtained bottom and top center coordinates of the circular tower drum. The method can rapidly and accurately realize the detection of wind turbine tower drum perpendicularity.

Description

WIND TURBINE TOWER DRUM INCLINATION DETECTION METHOD
BASED ON GROUND 3D LASER SCANNING TECHNOLOGY
TECHNICAL FIELD
[01] The present invention belongs to the technical field of building deformation measurement, and particularly relates to a wind turbine tower drum inclination detection method based on a ground 3D laser scanning technology.
BACKGROUND ART
[02] Building deformation measurement is the monitoring work on horizontal displacement, settlement, inclination, deflection, cracking, etc. of a building and its foundation. Wind turbine tower drums are mostly tall cylindrical buildings with a high height (more than 60 m) and a relatively small cross section. The wind turbine tower drums suffer from external force loads, such as self gravity, natural wind and earthquake, to and fro during long-term operation. This may cause tower drum inclination or local bending, and tends to cause tower drum dump or collapse.
[03] With the new surveying and mapping technology becoming mature, new monitoring methods have made great progress. However, the perpendicularity of wind turbine tower drums is still detected by the total station or theodolite. The common traditional operation methods make field operation difficult and measurement precision difficult to control due to inability to arrange target points (prisms) for wind turbine tower drums. The operation mode is time-consuming and laborious, the accuracy of target data is poor, and the data limitations are large.
SUMMARY
[04] The present invention is intended to solve the problems of difficult operation, difficult control of precision, time and labor consuming, poor accuracy of target data and large data limitations in the traditional detection of wind turbine tower drum inclination.
[05] In view of this, the present invention provides a wind turbine tower drum inclination detection method based on a ground 3D laser scanning technology, including the following steps:
[06] step 1) acquisition of point cloud data: erecting a 3D laser scanner in a fixed position, and acquiring point cloud data of an 1/3 circular drum body of a vertical projection of a tower drum;
[07] step 2) construction of a TIN model: preprocessing the point cloud data obtained in step 1), and constructing a TIN model of the 1/3 circular drum body;
[08] step 3) extraction of tower drum sections: selecting two horizontal contour sections of the tower drum from the TIN model obtained in step 2);
[09] step 4) reduction of center coordinates of the tower drum sections: selecting any three non-collinear points on each of the two horizontal contour sections of the tower drum in step 3) respectively, wherein the three points on each horizontal contour section of the tower drum can determine a unique circular plane, and reducing center coordinates of the two horizontal contour sections of the circular tower drum; and
[10] step 5) calculation of perpendicularity: calculating an inclination rate and an inclination direction of the tower drum through the two center coordinates obtained in step 4).
[11] The step 1) satisfies the following requirements:
[12] a) the fixed position point for erecting the 3D laser scanner is no less than 3/2 of a tower drum height horizontally from the tower drum, and the 3D laser scanner should be capable of completely scanning the tower drum height;
[13] b) the first erection direction determined by a compass points to the north or a certain azimuth, and the initial azimuth of the scanner in the subsequent repeated erection should be consistent with the first azimuth;
[14] c) a central leveling device must be used each time the scanner is erected in a fixed position, and it is ensured that the scanner is in a horizontal position; and
[15] d) rapid panoramic coarse scanning is performed first, and then the target tower drum is fine scanned.
[16] The two horizontal contour sections of the tower drum selected in step 3) are upper and lower sections of a segment of the tower drum to be measured for perpendicularity.
[17] The two horizontal contour sections of the tower drum selected in step 3) are top and bottom sections of the tower drum.
[18] In step 5), the inclination rate is calculated according to the following method:
[19] Fo” Fo
[20] where i is an inclination rate (%o) of the tower drum between the two horizontal contour sections, and the center coordinates of the two horizontal contour sections are respectively: (x, ,¥,,z, ) and (Fo 027 Zo, ).
[21] In step 5), the inclination angle is calculated according to the following method:
[22] O0, = AFC ao 2222. xX, =X,
[23] where Foo: is an inclination angle of the tower drum between the two horizontal contour sections, and the center coordinates of the two horizontal contour sections are respectively: (To Vo Zo ) and ( Koo oo Zo, ).
[24] Beneficial effects of the present invention: The wind turbine tower drum inclination detection method based on a ground 3D laser scanning technology provided herein can rapidly acquire high-density 3D point cloud data on the wind turbine tower drum surface at one time by means of a 3D laser scanner. The point cloud data are easy to acquire, high-precision and fast. One-time acquisition and multiple usages of the point cloud data are realized. The point cloud data of sections at any height of the tower drum can be extracted, and the geometric centers of the sections of the wind turbine tower drum changing with the height can be calculated, so as to achieve the purpose of detecting the tower drum perpendicularity.
BRIEF DESCRIPTION OF THE DRAWINGS
[25] The present invention will be further described below in detail in combination with accompanying drawings.
[26] FIG. 1 1s an erection diagram of a 3D laser scanner in an embodiment of the present invention.
[27] FIG. 2 is an effect diagram of tower drum point cloud scanned by the 3D laser scanner in an embodiment of the present invention.
[28] FIG. 3 is a diagram of sections and reduced geometric center coordinates of any three points selected on each of the sections in an embodiment of the present invention.
[29] FIG. 4 is a top view of the tower drum inclination calculation in an embodiment of the present invention.
[30] FIG. 5 is a side view of the tower drum inclination calculation in an embodiment of the present invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[31] The present invention provides a wind turbine tower drum inclination detection method based on a ground 3D laser scanning technology, in order to solve the problems of difficult field operation, difficult control of precision, time and labor consuming, poor accuracy of target data and large data limitations in the traditional detection of wind turbine tower drum perpendicularity.
[32] The 3D laser scanning described herein refers to that by means of a ground 3D laser scanner, the 3D data of a target body surface can be obtained by actively emitting laser without contact, and the digital informatization can be realized rapidly for the target body.
[33] Example 1:
[34] The example provides a wind turbine tower drum inclination detection method based on a ground 3D laser scanning technology. In combination with FIG. 1 and FIG. 2, the method includes the following steps:
[35] step 1) acquisition of point cloud data: erecting a 3D laser scanner in a fixed position, and acquiring point cloud data of an 1/3 circular drum body of a vertical projection of a tower drum;
[36] step 2) construction of a TIN model: preprocessing the point cloud data 5 obtained in step 1), and constructing a TIN model of the 1/3 circular drum body;
[37] step 3) extraction of tower drum sections: selecting two horizontal contour sections of the tower drum from the TIN model obtained in step 2);
[38] step 4) reduction of center coordinates of the tower drum sections: selecting any three non-collinear points on each of the two horizontal contour sections of the tower drum in step 3) respectively, wherein the three points on each horizontal contour section of the tower drum can determine a unique circular plane, and reducing center coordinates of the two horizontal contour sections of the circular tower drum; and
[39] step 5) calculation of perpendicularity: calculating an inclination rate and an inclination direction of the tower drum through the two center coordinates obtained in step 4).
[40] By the above-mentioned method steps, the longitudinal and transverse inclination components and an inclination degree of the tower drum can be calculated.
The method can rapidly and accurately realize the detection of wind turbine tower drum perpendicularity. It is of important practical significance to similar engineering detection and monitoring.
[41] Example 2:
[42] On the basis of example 1, specifically, the step 1) satisfies the following requirements:
[43] a) the fixed position point for erecting the 3D laser scanner is no less than 3/2 of a tower drum height horizontally from the tower drum, and the 3D laser scanner should be capable of completely scanning the tower drum height;
[44] b) the first erection azimuth is determined by a compass, and the initial azimuth of the scanner in the subsequent repeated erection should be consistent with the first azimuth;
[45] c¢) a central leveling device must be used each time the scanner is erected in a fixed position, and it is ensured that the scanner is in a horizontal position; and
[46] d) rapid panoramic coarse scanning is performed first, and then the target tower drum is fine scanned.
[47] Example 3:
[48] In the above-mentioned two examples, the two horizontal contour sections of the tower drum selected in step 3) should be upper and lower sections of a segment of the tower drum to be measured for perpendicularity. The horizontal contour sections are selected according to the segment of the tower drum to be measured, and should be the upper and lower sections of the segment of the tower drum to be measured.
[49] If the segment of the tower drum to be measured is the whole tower drum, then the two horizontal contour sections of the tower drum selected in step 3) are top and bottom sections of the tower drum. The perpendicularity of the whole tower drum can be calculated through the data calculation in the top and bottom sections.
[50] Example 4:
[51] In step 5), the inclination rate is calculated according to the following method:
[52] Fo Fon
[53] where 1 is an inclination rate (%o) of the tower drum between the two horizontal contour sections, and the center coordinates of the two horizontal contour sections are respectively: Co EN “oy and (To or Zo, ).
[54] In step 5), the inclination direction is calculated according to the following method:
[55] «,, =arctan| ———= xX, =X,
[56] where “uw. is an inclination direction of the tower drum between the two horizontal contour sections, and the center coordinates of the two horizontal contour sections are respectively: (Tord o> Zo ) and ( Kop Yop» Zo, ).
[S57] Specifically, a calculation process of the perpendicularity is as follows:
[58] Step 1) acquisition of point cloud data:
[59] a) a fixed position point for erecting a 3D laser scanner is selected and marked permanently, and the instrument scanning position is no less than 3/2 of a tower drum height h horizontally from the tower drum, as shown in FIG. 1;
[60] Db) the first erection direction determined by a compass points to the north or a certain azimuth, and the initial azimuth of the scanner in the subsequent repeated erection should be consistent with the first azimuth;
[61] c) a central leveling device must be used to fix the scanner to the firstly selected point every time the scanner is erected, and it must be ensured that the scanner is in a horizontal position; and
[62] d) no target is required for scanning; rapid panoramic coarse scanning is performed first, and then the target tower drum is fine scanned to acquire the point cloud data of the 1/3 circular drum body of the vertical projection of the tower drum at one time, as shown in FIG. 2.
[63] Step 2) extraction of tower drum sections:
[64] The point cloud data are preprocessed, a TIN model of the 1/3 circular drum body is constructed, upper and lower centers of the circular tower drum are fitted according to the top and bottom point cloud data of the tower drum, and horizontal contour sections of the circular tower drum at any point are extracted, as shown in FIG. 3.
[65] Step 3) reduction of geometric center coordinates of the circular tower drum sections:
[66] Any three non-collinear points on the tower drum sections can determine a circular plane, a plane equation of the three points and the center of the circle can be obtained, and the center coordinates of the tower drum sections can be reduced. As shown in FIG. 3, the coordinates of the three points in the space are 1(X1, Yi, Zi), 2(Xa,
Yaz, Z2) and 3(Xs, Ys, 73), the coordinates of the center of the circle are 0(Xo, Yo, Zo) and the circle radius is r.
[67] a. According to the distance from the points to the center of the circle as the radius, the followings are obtained: rt = (x; - xo) +{y1- yo) +{zi- zo) 1) rè (x; ~ xo)? +{yz- vo)? + {zz - Zo)” (2)
[68] ri = (ag = 20)" + (ya = yo) + (23 ~ Zo)" (3)
[69] b. The plane equation determined by the three points is:
Xo Yo zo 1
X1 Vi Zq 1 u z, 1179
Xp Vz “2 x; yy Za 1
[70]
[71] =A xq + BiVo + CZ + Dy = { (4)
[72] where: 73] A1 122123 Zia Z1z + Y2Z3 - 322
[74] Bq = = XZ + X12 + Z1AX2 — ZqXq — X93 + X2Z7 0 sj 1202 A43 122 + YiX3 + A2Y3 — x3) 76] Di= —Xa¥aZz + X1YsZy + 2123 7 XaYiZy K2V3Z1 + X3V2Z1
[77] From (1)=(2), the following is obtained: 2(xy = x)xg + 2(y2-yi)Vo + 2(22-Zi)Zo + XT FYE Zi - XG yi - 25
[78] =0 (5)
[79] Denoted as: AzX9 + Bayo + C2Zo + Dp = 0
[80] From (1)=(3), the following is obtained: 2(%4 2%) + 2(y3 — yo + 2(z3 - 220 + x] + yi +21 — x5 - 5 - 23
[81] =0 (6)
[82] Denoted as: A3%0 + Bayo + C3Zo + Dz = 0
[83] From (4), (5) and (6), the following is obtained:
Aq B 1 C 11H Xp D 1
A2 By Callyol +1|D2 =0
A3 By C3jlZo] [D3
[84] -1
Xo Ay Bi Cp [Dy
Yo|=—142 Bx 6, D
[85] Coordinates of the center of the circle: — ae 32 ml 2 - 2
[86] Radius: © vl = 29) + 1 Yo) + (21 Zo)
[87] Step 4) calculation of perpendicularity: As shown in FIG. 4 and FIG. 5, the longitudinal and transverse inclination components and an inclination degree of the tower drum are calculated through the obtained bottom and top center coordinates of the circular tower drum; or the tower drum curvature is calculated through the obtained bottom and top center coordinates of the circular tower drum and center coordinates of any position.
[88] As shown in FIG. 4, after the coordinates (Xo1, You, Zoi) of the bottom center
Oi and the coordinates (X02, Yoz, Zo2) of the top center Os of the circular building are obtained, the longitudinal inclination component 9s and the transverse inclination
J, component * can be calculated, namely
[89] Oy = Xp1 7 X02
[90] 8y = Vor” You o fe 2 2
[21] Total inclination amount: 8 = yò + dy
[92] As shown in FIG. 5, the inclination rate i is calculated through the tower drum height H, then: {=O 1=
[93] H=Zoi1-Zo Th a = arctan(Öy ô )
[94] Inclination direction: 0162 / x
[95] The above-mentioned examples only illustrate the present invention and do not limit the protection scope of the present invention. All designs identical with or similar to the present invention should fall into the protection scope of the present invention.

Claims (6)

Conclusies l. Werkwijze voor detectie van een trommelhelling van een windturbinetoren op basis van een grond-3D-laserscantechnologie, die de volgende stappen omvat: stap 1) het verwerven van puntwolkdata: het oprichten van een 3D-laserscanner in een vaste positie op de grond en het verwerven van puntwolkdata van een 1/3 circulair trommellichaam van een verticale projectie van een torentrommel; stap 2) het construeren van een TIN-model: het voorverwerken van de puntwolkdata die verkregen is in stap 1), en het construeren van een TIN-model van het 1/3 circulaire trommellichaam; stap 3) het onttrekken van torentrommelsecties: het selecteren van twee horizontale contoursecties van de torentrommel van het TIN-model dat verkregen is in stap 2); stap 4) het verminderen van middencoördinaten van de torentrommelsecties: het respectievelijk selecteren van enige drie niet-collineaire punten op elke van de twee horizontale contoursecties van de torentrommel in stap 3), waarbij de drie punten op elke horizontale contoursectie van de torentrommel een uniek circulair vlak kunnen bepalen, en het verminderen van middencoördinaten van de twee horizontale contoursecties van de circulaire torentrommel; en stap 5) het berekenen van loodrechtheid: het berekenen van een hellingshoeveelheid en een hellingsrichting van de torentrommel door de twee middencoördinaten die in stap 4) verkregen zijn.Conclusions l. Method for detecting a drum tilt of a wind turbine tower based on a ground 3D laser scanning technology, comprising the following steps: step 1) acquiring point cloud data: erecting a 3D laser scanner in a fixed position on the ground and acquiring of point cloud data from a 1/3 circular drum body of a tower drum vertical projection; step 2) constructing a TIN model: preprocessing the point cloud data obtained in step 1), and constructing a TIN model of the 1/3 circular drum body; step 3) extraction of tower drum sections: selecting two horizontal contour sections of the tower drum of the TIN model obtained in step 2); step 4) reducing center coordinates of the tower drum sections: respectively selecting any three non-collinear points on each of the two horizontal contour sections of the tower drum in step 3), where the three points on each horizontal contour section of the tower drum form a unique circular being able to determine plane, and reducing center coordinates of the two horizontal contour sections of the circular turret drum; and step 5) calculating perpendicularity: calculating a slope amount and a slope direction of the turret drum by the two center coordinates obtained in step 4). 2. Werkwijze voor detectie van een trommelhelling van een windturbinetoren op basis van een grond-3 D-laserscantechnologie volgens conclusie 1, waarbij de stap 1) aan de volgende vereisten voldoet: a) het vaste positiepunt voor het oprichten van de 3D-laserscanner is niet minder dan 3/2 van een torentrommelhoogte horizontaal van de torentrommel en waarbij de 3D- laserscanner zou in staat moeten zijn om de torentrommelhoogte volledig te scannen; b) de eerste oprichtrichting die bepaald is door een kompas, wijst naar het noorden of een bepaalde azimut en waarbij de initiële azimut van de scanner in de opeenvolgende herhaalde oprichting zou consistent moeten zijn met de eerste azimut; c) een centrale nivelleringsinrichting moet gebruikt worden elke keer dat deA ground 3D laser scanning technology based ground 3D laser scanning technology drum tilt detection method according to claim 1, wherein the step 1) meets the following requirements: a) the fixed position point for erecting the 3D laser scanner is not less than 3/2 of a turret drum height horizontal to the turret drum and where the 3D laser scanner should be able to fully scan the turret drum height; b) the first righting direction determined by a compass points to north or some azimuth and the initial azimuth of the scanner in the successive repeated righting should be consistent with the first azimuth; c) a central leveling device must be used each time the S11 - scanner opgericht is in een vaste positie en het verzekerd is dat de scanner in een horizontale positie is; en d) het snel panoramisch grof scannen wordt eerst uitgevoerd en daarna wordt de doeltorentrommel fijn gescand.S11 - scanner is set up in a fixed position and it is ensured that the scanner is in a horizontal position; and d) the fast panoramic coarse scanning is performed first and then the target tower drum is fine scanned. 3. Werkwijze voor detectie van een trommelhelling van een windturbinetoren op basis van een grond-3D-laserscantechnologie volgens conclusie 1, waarbij de twee horizontale contoursecties van de torentrommel die geselecteerd zijn in stap 3), bovenste en onderste secties van een segment van de torentrommel die gemeten dient te worden voor loodrechtheid, zijn.The method of detecting a drum tilt of a wind turbine tower based on a ground 3D laser scanning technology according to claim 1, wherein the two horizontal contour sections of the tower drum selected in step 3), upper and lower sections of a segment of the tower drum to be measured for perpendicularity. 4. Werkwijze voor detectie van een trommelhelling van een windturbinetoren op basis van een grond-3D-laserscantechnologie volgens conclusie 3, waarbij de twee horizontale contoursecties van de torentrommel die geselecteerd zijn in stap 3), boven- en ondersecties van de torentrommel zijn.The method of detecting drum tilt of a wind turbine tower based on a ground 3D laser scanning technology according to claim 3, wherein the two horizontal contour sections of the tower drum selected in step 3 are upper and lower sections of the tower drum. 5. Werkwijze voor detectie van een trommelhelling van een windturbinetoren op basis van een grond-3D-laserscantechnologie volgens conclusie 1, waarbij in stap 5) de hellingshoeveelheid berekend wordt volgens de volgende werkwijze: TTY : vi > 4, i Jo, ” Po z.,.__—__—_… .…n_______—_—_—_ Z, ” & 0 : waarbij 1 een hellingshoeveelheid (%0) van de torentrommel tussen de twee horizontale conotursecties is en de middencoördinaten van de twee horizontale . . .. oo Kor Yo Zn XV, - contoursecties respectievelijk het volgende zijn: ( * Pen (Ta? er eryThe method for detecting a drum tilt of a wind turbine tower based on a ground 3D laser scanning technology according to claim 1, wherein in step 5) the tilt amount is calculated according to the following method: TTY : vi > 4, i Jo, ” Po z .,.__—__—_… .…n_______—_—_—_ Z, ” & 0 : where 1 is a slope amount (%0) of the turret drum between the two horizontal conotur sections and the center coordinates of the two horizontal . . .. oo Kor Yo Zn XV, - contour sections respectively are the following: ( * Pen (Ta? er ery 6. Werkwijze voor detectie van een trommelhelling van een windturbinetoren op basis van een grond-3D-laserscantechnologie volgens conclusie 1, waarbij in stap 5) de hellingsrichting volgens de volgende werkwijze berekend wordt: Fo, =X, a, = wet) : 5 va xX —X 4 D, Oy La, Co waarbij ’ een hellingsrichting van de torentrommel tussen de twee horizontale contoursecties is en de middencoördinaten van de twee horizontale . . .. .. X Zz, xX EZ contoursecties respectievelijk het volgende zijn: ( © JZ yen (Fw Fer Foy,A method for detecting a drum tilt of a wind turbine tower based on a ground 3D laser scanning technology according to claim 1, wherein in step 5) the tilt direction is calculated according to the following method: Fo, =X, a, = wet): 5 va xX —X 4 D, Oy La, Co where ' is a direction of inclination of the turret drum between the two horizontal contour sections and the center coordinates of the two horizontal . . .. .. X Zz, xX EZ contour sections are respectively the following: ( © JZ yen (Fw Fer Foy,
NL2032789A 2022-08-18 2022-08-18 Wind turbine tower drum inclination detection method based on ground 3d laser scanning technology NL2032789B1 (en)

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