CN112229340A - Tower body structure developments horizontal deformation monitoring devices based on laser projection - Google Patents

Abstract

The invention discloses a tower body structure dynamic horizontal deformation monitoring device based on laser projection. The problem that the dynamic displacement monitoring technology of a power transmission tower system cannot be monitored in real time, the construction cost is high, and normal operation cannot be achieved in severe weather in the prior art is solved. The invention comprises the following steps: the laser emitters are arranged at different heights of the tower body and respectively emit laser projections with different patterns or shapes; the offset measuring ring is used for bearing the laser projection of the laser emitter and displaying the position of each laser projection; the high-definition camera is used for shooting a position image of laser projection on the offset measurement ring in real time; the image analysis processing unit is used for calculating and analyzing the relative position of each laser projection offset according to the image shot by the high-definition camera; and the cleaning structure is used for cleaning foreign matters on the offset measuring ring. The whole and local horizontal deformation of the tower body can be monitored in real time; can normally operate in severe weather such as rain, snow and the like.

Description

Tower body structure developments horizontal deformation monitoring devices based on laser projection

Technical Field

The invention relates to the field of monitoring of structures of electric power engineering and civil engineering, in particular to a dynamic horizontal deformation monitoring device of a tower body structure based on laser projection.

Background

In recent years, with the rapid development of power grid construction in China, the construction of power transmission tower structures is increasingly accelerated, high-voltage power transmission is still the most main power transmission mode in China at present, and whether a power transmission tower line can be operated safely or not directly influences the production construction of the country and the basic life requirements of people as an important component of a national lifeline system. The transmission tower line system is different from a general engineering structure, has the common characteristics of a high-rise structure and a long-span structure, has a high tower body structure, a large span and strong flexibility, is a continuous body formed by connecting transmission towers by leads, and is sensitive to wind load response, but the current load design specifications and the related industry specifications of the transmission towers still have a plurality of limitations on knowing the displacement response of the transmission tower system, and in view of the status of a high-voltage transmission industry in national economic construction, a remote real-time monitoring system aiming at the displacement of the transmission tower system is necessary to be constructed.

At present, the dynamic displacement monitoring technology of a power transmission tower system is less, and the traditional mechanical displacement meter, the total station and the photoelectric distance meter all need field manual operation, cannot acquire in real time for a long time and cannot perform remote measurement. Some novel monitoring means such as GPS or Beidou technology not only need to additionally build a GPS reference station, but also have high cost; and the instrument is difficult to protect in the field, can not guarantee to use normally under extreme weather condition, has certain limitation.

For example, a monitoring device for the inclination, subsidence and horizontal displacement of a four-antenna transmission line tower disclosed in the chinese patent document, which is under the publication number CN104236526B, comprises a reference station and a mobile station; the mobile station comprises a first GNSS satellite receiving board and a second GNSS satellite receiving board which are both arranged on the power transmission line tower, a second data transmission radio station connected with the signal output ends of the two GNSS satellite receiving boards and a mobile station management circuit; the mobile station management circuit is connected with a second GSM device; and the signal input ends of the two GNSS satellite receiving boards are connected with a mobile station positioning antenna and a mobile station direction-finding antenna which are arranged on a power transmission line tower. The scheme needs to build an additional base station, so that the cost is high; and normal use under extreme weather conditions cannot be guaranteed.

Disclosure of Invention

The invention mainly solves the problems that the dynamic displacement monitoring technology of the power transmission tower system in the prior art cannot be monitored in real time and the construction cost is high; the utility model provides a tower body structure developments horizontal deformation monitoring devices based on laser projection, monitors in real time, calculates the relative position of the projection pattern or the shape of laser emitter under the different heights on the skew measurement ring through high definition digtal camera and image analysis, monitors the horizontal deformation of transmission tower structure in real time.

The invention also solves the problem that the dynamic displacement monitoring of the power transmission tower system in the prior art can not be normally used in extreme weather; the utility model provides a tower body structure developments horizontal deformation monitoring devices based on laser projection sets up the clearance structure, clears away the debris on the skew measurement ring, guarantees detection device's normal operating.

The technical problem of the invention is mainly solved by the following technical scheme:

the utility model provides a tower body structure developments horizontal deformation monitoring devices based on laser projection, sets up in tower body structure, includes:

the laser emitters are arranged at different heights of the tower body and respectively emit laser projections with different patterns or shapes;

the offset measuring ring is used for bearing the laser projection of the laser emitter and displaying the position of each laser projection;

the high-definition camera is used for shooting a position image of laser projection on the offset measurement ring in real time;

the image analysis processing unit is used for calculating and analyzing the relative position of each laser projection offset according to the image shot by the high-definition camera;

and the cleaning structure is used for cleaning foreign matters on the offset measuring ring.

The monitoring device of the scheme can not only calculate the horizontal deformation of the tower conveying body through the relative positions of the projection patterns or the shapes of the laser transmitters on the offset measuring ring under different heights, but also monitor in real time through the high-definition camera and the image analysis and processing unit. Under extreme weather conditions, foreign matters on the offset measuring ring are clear through the cleaning structure, and the normal operation of the monitoring device is guaranteed. The dynamic horizontal deformation monitoring device for the tower body structure based on laser projection has the advantages of being low in manufacturing cost, flexible in arrangement and high in practicability.

Preferably, the monitoring device further comprises

The laser emitter is arranged on the supporting partition plates;

supporting baseplate, with tower body bottom fixed connection, the skew measurement ring sets up on supporting baseplate surface, and clearance structure and high definition digtal camera are fixed to be set up on supporting baseplate.

The supporting partition plate is used for fixing the laser transmitter, so that the laser transmitter is convenient to install, and the laser transmitter at the same height can be ensured to be positioned on the same horizontal plane. The supporting base plate ensures that the relative position of the high-definition camera and the offset measuring ring is kept unchanged, and the accuracy of the detected data is ensured.

Preferably, three laser transmitters are arranged on each layer of the supporting partition plate, and the laser transmitters are respectively arranged on the symmetrical center points of the supporting partition plate and the center points of the two collar edges; the symmetry center points of the different support baffles do not coincide. The points of the three different lines define a plane and the inclination of the cross-section is calculated by the relative distance between the projected patterns or shapes of the three laser emitters at the same height. The laser transmitters at all the height symmetrical center points except the first layer are offset by a distance towards different directions, so that the projection patterns or shapes of the laser transmitters at all the height symmetrical center points are prevented from being overlapped, the horizontal displacement of the tower body under the height can be monitored by the relative position of the three projection patterns or shapes falling on the offset measuring ring under the same height, and the inclination of the cross section can be monitored by the relative distance between the three projection patterns or shapes. And calculating the horizontal offset of the tower body at different heights according to the relative positions of the projection patterns or shapes of the laser transmitters at different heights on the offset measuring ring, thereby calculating the integral horizontal deformation of the power transmission tower. The monitoring result is closer to the actual situation.

Preferably, the supporting clapboard is made of high-hardness transparent materials. The specific material includes acrylic plate, paml board etc. ensures that laser emitter's laser projection can fall on the skew measurement ring and relative position can not produce the error because of the crooked of support baffle self to influence the precision.

Preferably, the offset measuring ring comprises a plurality of concentric circle position marks. The concentric circle position identification is arranged, so that the position of laser projection can be observed visually, and the calculation and analysis of a subsequent image analysis processing unit are facilitated.

Preferably, the cleaning structure is controlled by the image analysis processing unit and comprises

The dust removal fan blows away the sundries when the sundries shield the offset measuring ring;

and the electric heating pipe is used for heating to eliminate accumulated snow when the accumulated snow covers the deviation measuring ring in rainy and snowy weather.

The monitoring device that avoids bad weather to cause like sleet weather can not use through the setting of clearance structure, overcomes bad weather to monitoring device's influence, improves monitoring device's reliability.

Preferably, the electric heating tubes are arranged in a serpentine shape in the supporting bottom plate. The snakelike heating range that sets up is big, and the heating is even, guarantees to compromise each position of skew measurement ring.

Preferably, the step of calculating and analyzing the relative position of each laser projection offset by the image analysis processing unit includes:

establishing a coordinate system by taking the circle of the offset measuring ring as a dot;

after the rated time T, extracting the coordinate value of each laser projection position at the moment;

the heights corresponding to the laser projections are distinguished by different patterns or shapes, and the laser projections with the same pattern or shape are correspondingly associated at different moments according to the relative position relationship;

and calculating the offset of each laser projection position by making a difference between the coordinate value of the laser projection position at the current moment and the coordinate value of the laser projection position correspondingly associated with the previous moment.

According to the scheme, coordinate values of the position at the last moment and the current position are extracted through an image processing method, and horizontal two-direction deformation of the tower body is calculated through calculating the difference value of the coordinate values of the position at the last moment and the current position, so that the local or integral horizontal deformation of the power transmission tower structure is monitored in real time.

Preferably, the image analysis processing unit obtains the local offsets of the tower bodies at different heights by measuring the average value of the offsets of the laser projection positions at the same height; and measuring the average value of the local offsets of the tower bodies with different heights to obtain the integral offset of the tower body. Not only can monitor the holistic horizontal offset of tower body, can also obtain the local horizontal offset of tower body, the testing data is more comprehensive.

Preferably, the inclination of the height section corresponding to the pattern or shape laser projection is obtained by calculating the relative positional change between the laser projections for the same pattern or shape. The scheme can monitor the horizontal displacement of the tower body under the same height through the relative positions of the three projection patterns or the shapes falling on the offset measuring ring under the same height, and can monitor the inclination of the cross section through the relative distance between the three laser projection patterns or the shapes.

The invention has the beneficial effects that:

1. and the relative position of the laser projection pattern or the shape of the laser emitter at different heights on the offset measurement ring is monitored and calculated in real time through the high-definition camera and the image analysis processing unit, and the horizontal deformation of the power transmission tower structure is monitored in real time.

2. Monitoring the horizontal displacement of the tower body at the same height through the relative positions of three projected patterns or shapes falling on the offset measuring ring at the height; the tilt of the cross section is monitored by the relative distance between the three laser projection patterns or shapes. The monitoring is comprehensive.

3. Accumulated snow on the offset measuring ring and blown sundries can be removed in time by arranging the electric heating tube and the dust removing fan, and the monitoring device can be ensured to be normally used even under extreme weather conditions.

Drawings

Fig. 1 is a front view of the monitoring device of the present invention.

Fig. 2 is a top view of the monitoring device of the present invention.

Fig. 3 is a cross-sectional view of the support base of the present invention.

FIG. 4 is a top view of the offset measurement ring of the present invention.

In the figure, 1, a supporting clapboard, 2, a laser emitter, 3, a high-definition camera, 4, a dust removal fan, 5, a supporting baseplate, 6, an offset measuring ring, 7, an image analysis processing unit and 8, an electric heating tube are arranged.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.

Example (b):

the dynamic horizontal deformation monitoring device for the tower body structure based on laser projection is arranged in the tower body structure and comprises a supportingpartition plate 1, alaser emitter 2, a high-definition camera 3, a supportingbottom plate 5, an offset measuringring 6, an imageanalysis processing unit 7 and a cleaning structure, wherein thelaser emitter 2, the high-definition camera 3, the supportingbottom plate 5, the offset measuringring 6 and the cleaning structure are arranged in the tower body structure.

The supportingbaffle plates 1 are respectively and fixedly connected with key parts of the tower body with different horizontal heights. Threelaser transmitters 2 are arranged on each supportingpartition plate 1, the laser projection patterns or the shapes of thelaser transmitters 2 with different heights are different, and thelaser transmitters 2 are fixedly connected with the supportingpartition plates 1.

The tower body structure in this embodiment is a 110kV composite cross arm power transmission tower structure. The height of the tower body structure is 26.7m, the breath height is 21.0m, the root of the tower body structure is 4.035m in the vertical line direction, and the root of the tower body structure is 3.125m in the along-line direction. Thesupport spacers 1 are installed at three heights of the transmission tower structure 9m, 18m, 26.7 m.

The supportingpartition plates 1 are made of high-hardness transparent materials, specific materials with the thickness of 0.01m of each supportingpartition plate 1 comprise acrylic plates, lamb plates and the like, and it is ensured that laser projection of thelaser emitter 2 can fall on the offset measuringring 6 and errors cannot be generated in relative positions due to bending of the supportingpartition plates 1, so that accuracy is affected.

As shown in fig. 2, threelaser emitters 2 are arranged on each layer of the supportingpartition board 1, and thelaser emitters 2 are respectively arranged on the symmetrical center point of the supportingpartition board 1 and the center points of the two collar edges; the centre points of symmetry of the different supportingspacers 2 do not coincide.

The three points of different lines determine a plane, thelaser emitters 2 at the symmetrical center points of all heights except the first layer are offset by a distance towards different directions, the projection patterns or shapes of thelaser emitters 2 at the symmetrical center points of all heights are prevented from being overlapped, so that the horizontal displacement of the tower body under the height can be monitored by the relative positions of the three projection patterns or shapes falling on the offset measuringring 6 under the same height, and the inclination of the cross section can be monitored by the relative distances among the three projection patterns or shapes.

In this embodiment, the size of the projection pattern or shape of thelaser emitter 2 is 0.5cm-5cm, and the laser emitters at the symmetrical centers of the second layer and the third layer are respectively shifted to the right and up by 10cm, so that the projection patterns or shapes of the laser emitters at the symmetrical center points of the heights of the two and three layers are prevented from being overlapped, and the projection patterns or shapes of the laser emitters at different heights are different.

The horizontal offset of the tower body at different heights is calculated through the relative positions of the projection patterns or shapes of thelaser transmitters 2 at different heights on the offset measuringring 6, so that the overall horizontal deformation of the power transmission tower is calculated. The monitoring result is closer to the actual situation.

The supportingbottom plate 5 is arranged at the bottom of the tower body and fixedly connected with the four corners of the tower body, and the thickness of the supporting bottom plate is 0.01 m.

Skewmeasurement ring 6 sets up on supportingbaseplate 5 surface, and clearance structure and high definition digtal camera 3 are fixed to be set up on supportingbaseplate 5.

The cleaning structure comprises a dust removing fan 4 and anelectric heating pipe 8.

The high-definition camera 3 and the dust removing fan 4 are respectively arranged on two opposite sides of the supportingbottom plate 5.

The high-definition camera 3 is fixedly connected with the supportingbottom plate 5, can shoot the relative position of the projection pattern or the shape of eachlaser emitter 2 on the offset measuringring 6 in real time, and transmits the data file to the imageanalysis processing unit 7 for real-time monitoring and storage.

The dust removal fan 4 is fixedly connected with the supportingbase plate 5, the switch can be controlled through the imageanalysis processing unit 7, and when sundries are blown to the supportingbase plate 5 to shield the offset measuringring 6, the sundries can be blown away through the dust removal fan 4, so that the normal use of the real-time monitoring device is ensured.

As shown in fig. 3, theelectric heating tube 8 is serpentine-shaped arranged in the supportingbase plate 5. The snakelike heating range that sets up is big, and the heating is even, guarantees to compromise each position of skew measurement ring.

The power switch of theelectric heating tube 8 is controlled by the imageanalysis processing unit 7, and when snow covers thedeviation measuring ring 6 in rainy and snowy weather, theelectric heating tube 8 can heat the supportingbottom plate 5, so that thedeviation measuring ring 6 is not covered by the rain and snow, and the normal use of the real-time monitoring device in extreme weather is ensured.

The offset measuringring 6 is used for carrying laser projections of thelaser emitter 2, and the offset measuringring 6 comprises a plurality of concentric circle position marks for displaying the positions of the laser projections. The concentric circle position identification is arranged, so that the position of laser projection can be observed visually, and the calculation and analysis of a subsequent image analysis processing unit are facilitated.

In this embodiment, the center of the offset measuringring 6 is the symmetric center of the support base plate, the minimum radius is 5mm, and the minimum radius is sequentially increased by 5mm, and the maximum radius is 2.725 m. Ensuring sufficient accuracy of the real-time monitoring device.

The imageanalysis processing unit 7 calculates and analyzes the relative position of each laser projection offset according to the image shot by the high-definition camera 3, and the method comprises the following steps:

the circle of the offset measuringring 6 is used as a dot to establish a coordinate system.

After the rated time T, the coordinate values of the laser projection positions at that time are extracted.

The heights corresponding to the laser projections are distinguished by different patterns or shapes, and the laser projections with the same pattern or shape are correspondingly associated at different moments by the relative position relationship.

And calculating the offset of each laser projection position by making a difference between the coordinate value of the laser projection position at the current moment and the coordinate value of the laser projection position correspondingly associated with the previous moment.

The method comprises the steps of obtaining the local offsets of tower bodies at different heights by measuring the average value of the offsets of all laser projection positions at the same height; and measuring the average value of the local offsets of the tower bodies with different heights to obtain the integral offset of the tower body.

By calculating the relative positional change between laser projections of the same pattern or shape, the inclination of the height section to which the pattern or shape laser projection corresponds is obtained.

As shown in fig. 4, the square A, B, C and the triangular D, E, F and the circular G, H, I are laser projections at the present time of three different heights, respectively, and the square a ', B ', C ' and the triangular D ', E ', F ' and the circular G ', H ', I ' are laser projections at the corresponding previous time of three different heights, respectively.

The square laser projection is the laser projection of thelaser emitter 2 on the first layer of the supportingpartition board 1; the triangular laser projection is the laser projection of thelaser emitter 2 on the second layer of the supportingpartition board 1; the circular laser projection is the laser projection of thelaser emitter 2 on the third layer of the supportingpartition board 1.

It can be taken from fig. 4 that the entire tower body is shifted to the right and upwards.

According to the invention, the relative positions of the laser projection patterns or shapes of the laser transmitters at different heights on the offset measurement ring are monitored and calculated in real time through the high-definition camera 3 and the imageanalysis processing unit 7, and the horizontal deformation of the power transmission tower structure is monitored in real time. Monitoring the horizontal displacement of the tower body at the same height through the relative positions of three projected patterns or shapes falling on the offset measuring ring at the height; the tilt of the cross section is monitored by the relative distance between the three laser projection patterns or shapes, monitoring the overall profile. Accumulated snow on the offset measuring ring and blown sundries can be removed in time by arranging the electric heating tube and the dust removing fan, and the monitoring device can be ensured to be normally used even under extreme weather conditions.

The above disclosure is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or modifications within the technical scope of the present invention, and shall be covered by the scope of the present invention.

Claims (9)

Translated fromChinese

1.一种基于激光投影的塔体结构动态水平变形监测装置，设置在塔体结构中，其特征在于，包括：1. a tower structure dynamic horizontal deformation monitoring device based on laser projection, is arranged in the tower structure, is characterized in that, comprises:若干激光发射器（2），设置在塔体的不同高度处，不同高度的激光发射器分别发射不同图案或形状的激光投影；A plurality of laser transmitters (2) are arranged at different heights of the tower body, and the laser transmitters of different heights respectively emit laser projections of different patterns or shapes;偏移测量环（6），用于承载激光发射器的激光投影，显示各激光投影的位置；The offset measurement ring (6) is used to carry the laser projections of the laser emitters and display the position of each laser projection;高清摄像头（3），实时拍摄偏移测量环上激光投影的位置图像；A high-definition camera (3), which captures the position image of the laser projection on the offset measurement ring in real time;图像分析处理单元（7），根据高清摄像头拍摄的图像，计算分析各激光投影偏移的相对位置；The image analysis and processing unit (7) calculates and analyzes the relative position of each laser projection offset according to the image captured by the high-definition camera;清理结构，用于清除偏移测量环上的异物。Cleaning structure for removing foreign matter from the offset measuring ring.2.根据权利要求1所述的一种基于激光投影的塔体结构动态水平变形监测装置，其特征在于，所述的监测装置还包括2 . The device for monitoring the dynamic horizontal deformation of a tower structure based on laser projection according to claim 1 , wherein the monitoring device further comprises: 3 .若干支撑隔板（1），分别固定连接在塔体的不同水平高度处，激光发射器（2）设置在支撑隔板上；A plurality of support clapboards (1) are respectively fixed and connected at different levels of the tower body, and the laser emitters (2) are arranged on the support clapboards;支撑底板（5），与塔体底部固定连接，偏移测量环（6）设置在支撑底板表面，清理结构与高清摄像头（3）固定设置在支撑底板上。The support base plate (5) is fixedly connected with the bottom of the tower body, the offset measurement ring (6) is arranged on the surface of the support base plate, and the cleaning structure and the high-definition camera (3) are fixedly arranged on the support base plate.3.根据权利要求2所述的一种基于激光投影的塔体结构动态水平变形监测装置，其特征在于，每一层支撑隔板（2）上设置有三个激光发射器（2），激光发射器分别设置在支撑隔板的对称中心点以及两条领边的中心点上；不同支撑隔板的对称中心点不重合。3. A device for monitoring the dynamic horizontal deformation of a tower structure based on laser projection according to claim 2, characterized in that, three laser emitters (2) are arranged on each layer of support baffles (2), and the laser emitters The device is respectively arranged on the symmetrical center point of the support partition and the center point of the two collar edges; the symmetrical center points of different support partitions are not coincident.4.根据权利要求2或3所述的一种基于激光投影的塔体结构动态水平变形监测装置，其特征在于，所述的支撑隔板（1）为高硬度透明材料制成。4 . The device for monitoring the dynamic horizontal deformation of a tower structure based on laser projection according to claim 2 or 3 , wherein the support baffle ( 1 ) is made of a high-hardness transparent material. 5 .5.根据权利要求1所述的一种基于激光投影的塔体结构动态水平变形监测装置，其特征在于，所述的偏移测量环（6）包括若干同心圆位置标识。5 . The device for monitoring the dynamic horizontal deformation of a tower structure based on laser projection according to claim 1 , wherein the offset measurement ring ( 6 ) includes several concentric circle position markers. 6 .6.根据权利要求1或2所述的一种基于激光投影的塔体结构动态水平变形监测装置，其特征在于，所述的清理结构由图像分析处理单元（7）控制，清理结构包括6. A device for monitoring the dynamic horizontal deformation of a tower structure based on laser projection according to claim 1 or 2, wherein the cleaning structure is controlled by an image analysis and processing unit (7), and the cleaning structure comprises:除尘风扇（4），当有杂物遮挡偏移测量环（6）时吹开杂物；The dust removal fan (4) blows away the debris when there is debris blocking the offset measurement ring (6);电热管（8），当雨雪天气下积雪覆盖偏移测量环（6）时加热消除积雪。The electric heating tube (8) is used to heat and eliminate the snow when the snow covers the offset measurement ring (6) in rainy and snowy weather.7.根据权利要求1或3或5所述的一种基于激光投影的塔体结构动态水平变形监测装置，其特征在于，所述的图像分析处理单元（7）计算分析各激光投影偏移的相对位置的步骤包括：7 . The device for monitoring the dynamic horizontal deformation of tower structure based on laser projection according to claim 1 , 3 or 5 , wherein the image analysis processing unit ( 7 ) calculates and analyzes the deviation of each laser projection offset. 8 . The relative position steps include:以偏移测量环（6）的圆形为圆点，建立坐标系；Take the circle of the offset measurement ring (6) as a point to establish a coordinate system;经过额定时间T，提取该时刻的各激光投影位置的坐标值；After the rated time T, the coordinate value of each laser projection position at this moment is extracted;以不同的图案或形状区分各激光投影对应的高度，相同图案或形状的激光投影以其相对的位置关系在不同时刻对应关联；Distinguish the corresponding height of each laser projection with different patterns or shapes, and the laser projections of the same pattern or shape are associated at different times with their relative positional relationship;通过现在时刻的激光投影位置坐标值与上一时刻对应关联的激光投影位置坐标值做差，计算出各激光投影位置的偏移量。The offset amount of each laser projection position is calculated by making the difference between the coordinate value of the laser projection position at the current moment and the coordinate value of the laser projection position corresponding to the previous moment.8.根据权利要求7所述的一种基于激光投影的塔体结构动态水平变形监测装置，其特征在于，所述的图像分析处理单元（7）通过对同一高度的各激光投影位置的偏移量取平均值，获得不同高度的塔体局部偏移量；对不同高度的塔体局部偏移量取平均值，获得塔体整体偏移量。8 . The device for monitoring the dynamic horizontal deformation of a tower structure based on laser projection according to claim 7 , wherein the image analysis and processing unit ( 7 ) uses the offset of each laser projection position at the same height. 9 . Take the average value to obtain the local offset of the tower body of different heights; take the average value of the local offset of the tower body of different heights to obtain the overall offset of the tower body.9.根据权利要求7所述的一种基于激光投影的塔体结构动态水平变形监测装置，其特征在于，通过计算对相同图案或形状的激光投影之间的相对位置变化，获得该图案或形状激光投影对应的高度截面的倾斜。9 . The device for monitoring dynamic horizontal deformation of tower structure based on laser projection according to claim 7 , wherein the pattern or shape is obtained by calculating the relative position change between laser projections of the same pattern or shape. 10 . The laser projection corresponds to the inclination of the height section.

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