CN112761902B - System and method for monitoring settlement inclination of fan tower drum based on line laser intensity measurement - Google Patents
System and method for monitoring settlement inclination of fan tower drum based on line laser intensity measurement Download PDFInfo
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- CN112761902B CN112761902B CN202110192797.XA CN202110192797A CN112761902B CN 112761902 B CN112761902 B CN 112761902B CN 202110192797 A CN202110192797 A CN 202110192797A CN 112761902 B CN112761902 B CN 112761902B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
Abstract
The invention discloses a fan tower barrel settlement inclination monitoring system and method based on line laser intensity measurement, and belongs to the technical field of wind power generation. The laser device comprises a laser transmitter, an aperture filter, a spectroscope, a convex lens, a concave prism, a surface laser filter, a light reduction mirror and a charge coupling element. The laser emitter is arranged on a horizontal plane opposite to the tower drum, and the charge coupling element is vertically arranged on the outer wall of the tower drum and opposite to the laser emitter; the aperture filter, the spectroscope, the convex lens, the concave prism, the surface laser filter and the light reduction mirror are sequentially arranged on a transmission path of laser emitted by the laser emitter; a light intensity measuring device is arranged on a reflected light path of the spectroscope; the light intensity measuring device and the charge coupled device are respectively connected to the data processing system. The invention has small interference by external environmental factors and high precision, and can accurately capture the tiny sedimentation and inclination state of the tower, so that the wind turbine generator can run healthily, safely and reliably.
Description
Technical Field
The invention belongs to the technical field of wind power generation, and particularly relates to a fan tower drum settlement inclination monitoring system and method based on line laser intensity measurement.
Background
Wind power generation technology has been fully developed in the past 10 years and is trending toward further rapid development in the future. Along with the increase of the single-machine power of the wind turbine generator, the diameter of a wind wheel of a fan is increased, the weight of a cabin is increased, the height and the weight of a tower barrel of the fan for mounting the cabin of the fan are increased continuously, and the requirements of the wind turbine generator on foundation surveying and designing are improved.
In order to ensure the safe operation of the wind turbine generator, the online monitoring of the safety and health state of the tower drum is very important. The accident that a newly-built tower cylinder adopting an ultrahigh flexible tower and an old tower cylinder entering the later stage of a life cycle slightly incline and then fall over due to factors such as uneven settlement and loosening of bolts of the tower cylinder frequently occurs.
Disclosure of Invention
In order to solve the above problems, the present invention aims to provide a system and a method for monitoring the settlement and inclination of a tower drum of a wind turbine based on linear laser intensity measurement, which are less interfered by external environmental factors, have high precision, and can accurately capture the tiny settlement and inclination state of the tower drum, so that the wind turbine generator can operate healthily, safely and reliably.
The invention is realized by the following technical scheme:
the invention discloses a fan tower barrel settlement inclination monitoring system based on line laser intensity measurement, which comprises a laser transmitter, an aperture filter, a spectroscope, a convex lens, a concave prism, a surface laser filter, a light reduction mirror and a charge coupling element, wherein the aperture filter is arranged on the surface of the laser transmitter;
the laser emitter is arranged on a horizontal plane opposite to the tower drum, and the charge coupling element is vertically arranged on the outer wall of the tower drum and opposite to the laser emitter; the aperture filter, the spectroscope, the convex lens, the concave prism, the surface laser filter and the light reduction mirror are sequentially arranged on a transmission path of laser emitted by the laser emitter; a light intensity measuring device is arranged on a reflected light path of the spectroscope; the light intensity measuring device and the charge coupled device are respectively connected to the data processing system.
Preferably, the aperture of the iris filter is adjustable.
Preferably, the included angle between the spectroscope and the laser emitted by the laser emitter is 45 degrees, and the light intensity of the reflected light of the spectroscope is 4-5% of the light intensity of the laser emitted by the laser emitter.
Preferably, the light intensity measuring device comprises a light intensity measuring instrument and an oscilloscope, the light intensity measuring instrument faces the reflected light path of the spectroscope, the light intensity measuring instrument is connected with the oscilloscope, and the oscilloscope is connected with the data processing system.
Preferably, the axis of the concave prism is placed horizontally, the plane of the concave prism faces the convex lens, and the cambered surface faces the surface laser filter.
Preferably, the surface laser filter comprises a bracket, an upper baffle and a lower baffle; the support is fixed on the horizontal plane, and overhead gage and lower baffle are respectively with support swing joint, and overhead gage and lower baffle are light tight material.
Preferably, the area of the photosensitive area array of the charge coupled device is larger than the light receiving area; the height of the photosensitive area of the charge coupled device is 2-3 times of the height of the received light.
Preferably, a light shielding shell is arranged between the light reduction mirror and the charge coupling element.
The invention discloses a method for monitoring the settlement and inclination of a fan tower drum by adopting the fan tower drum settlement and inclination monitoring system based on line laser intensity measurement, which comprises the following steps:
the laser emitter emits laser beams with specific wavelength and intensity at a preset frequency, the laser beams are adjusted into circular laser beams with preset diameters through the aperture filter, after the circular laser beams reach the beam splitter, reflected light beams reach the light intensity measuring device, measured light intensity data are sent to the data processing system, refracted light beams continue to be transmitted to the convex lens to be converged, fan-shaped surface laser is formed after the concave prism, the fan-shaped surface laser is adjusted into parallel surface laser after passing through the surface laser filter, and the parallel surface laser irradiates the charge coupled device after the light intensity of the parallel surface laser is reduced through the beam reducer; and the data processing system realizes the settlement and inclination monitoring of the tower drum of the fan according to the parameters of the parallel surface laser irradiated on the charge coupled element.
Preferably, the monitoring of the settlement inclination of the tower of the wind turbine specifically comprises:
the charge coupling element consists of M multiplied by N photosensitive diodes, and output data of the charge coupling element is transmitted to a data processing system to be processed into an M multiplied by N data matrix;
the laser emitter emits X beams of laser every day, and for the ith beam of laser emitted by the laser emitter, the amplitude I output by the light intensity measuring device is combinediAnd a data matrix A received by the data processing systemi,M×NAnd calibrating the ith data matrix according to the following formula to eliminate the influence of the laser intensity fluctuation emitted by the laser emitter:
averaging processes X data per day:
data of the first day
For reference, data of each day is recorded
Compared with the prior art, the method is used for preliminarily judging the inclination state of the tower drum:
if the difference matrix
If the value is larger, primarily judging that the tower barrel is settled or inclined; and according to the difference matrix
Preliminarily judging the inclination direction of the tower barrel at the position where the maximum value appears;
for estimating the amount of inclination or the tilt angle of the tower or the CCD, a matrix of differences is used
Selecting B columns and C rows of data adjacent to the position where the median maximum value appears in the vertical and horizontal directions, and performing accumulation processing to construct an M multiplied by 1 column matrix and a 1 multiplied by N row matrix:
wherein i1And i2The row ordinal number and the column ordinal number are respectively the position where the maximum value appears;
drawing a one-dimensional graph of light intensity distribution by using the two matrixes, and obtaining data of day 1
Carrying out the same treatment and directly comparing; calculating an inclination angle alpha in the vertical direction and an inclination angle beta in the horizontal direction according to the change quantity of the positions where the light intensity sudden change appears:
wherein n is+And n_The number of pixels respectively entering and leaving the parallel plane laser irradiation area due to the inclination of the tower; l is the size of a single photodiode;
comparison of n+And n_The numerical value of (2) can judge whether the tower barrel is settled or inclined or whether the settlement and the inclination occur singly or simultaneously; if the inclination is only generated, calculating the integral inclination angle gamma of the tower barrel according to the inclination angle alpha of the tower barrel in the vertical direction and the inclination angle beta in the horizontal direction:
γ＝arccos(cosα×cosβ)。
compared with the prior art, the invention has the following beneficial technical effects:
according to the fan tower barrel settlement inclination monitoring system based on the line laser intensity measurement, the intensity measurement and output device of the line laser is fixed at the specific position of the tower barrel, and the safety and health state of the tower barrel can be monitored on line by comparing the change of the laser intensity in the horizontal direction and the vertical direction. The aperture filter can adjust the shape of the laser; because the measuring light intensity range of the charge coupled device is limited, the dimming mirror can avoid damage caused by overlarge intensity of the incident laser. The laser has single wavelength, stable intensity, small influence of dispersion of ambient air and the characteristics of recording, data processing and analyzing of light intensity by the charge coupling element, and can capture the tiny (10 um level) inclined state of the tower by utilizing the characteristic of high spatial resolution of the charge coupling element, thereby providing data and guidance for further measures for maintenance of the tower of the wind turbine, and being beneficial to the healthy, safe and reliable operation of the wind turbine.
Furthermore, the aperture of the aperture filter is adjustable, so that the cross section of a beam of laser passing through the aperture filter is circular with a set diameter, and the monitoring requirements under different conditions are met.
Furthermore, because the intensity of the laser can be attenuated to a certain degree in the transmission process, the spectroscope detects the light intensity of 4-5% of reflected light of the laser beam, and the interference of the attenuation of the laser intensity on the measurement and analysis of the light intensity can be eliminated.
Furthermore, the surface laser filter is simple in structure, the width of the surface laser can be conveniently adjusted through the movement of the upper baffle and the lower baffle, and the monitoring requirements under different conditions are met.
Furthermore, the area of the photosensitive area array of the charge coupled device is larger than the area of the received light, so that the received laser can be completely projected onto the charge coupled device, more edge areas are reserved, and the accuracy of analysis and calculation is improved.
Furthermore, a shading shell is arranged between the light reduction mirror and the charge coupling element, so that the influence of background light on measurement can be eliminated.
The method for monitoring the settlement inclination of the fan tower drum by adopting the fan tower drum settlement inclination monitoring system based on the line laser intensity measurement can accurately capture the tiny settlement inclination state of the tower drum, so that the wind turbine generator can run healthily, safely and reliably.
Furthermore, through the quantitative processing of various numerical values, specific numerical values of the settlement and the inclination of the tower can be obtained, and a powerful theoretical basis is provided for the monitoring and analysis of the settlement and the inclination of the tower of the wind turbine.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of normal projection of parallel plane laser light onto a CCD;
FIG. 3 is a schematic diagram illustrating changes in the CCD region when the tower is not tilted and tilted at an angle α;
fig. 4 is a graph showing the vertical distribution of the line laser intensity measured by the charge coupled device.
In the figure: 1-a laser emitter; 2-an aperture filter; a 3-spectroscope; 4-light intensity measuring instrument; 5-an oscilloscope; a 6-convex lens; 7-a concave prism; 8-face laser filter; 9-a light reduction mirror; 10-a charge coupled element; 11-line laser; 12-a signal processor; 13-a computer; 14-a tower drum; 15-a photodiode; 16-parallel plane laser.
Detailed Description
The invention will now be described in further detail with reference to the following drawings and specific examples, which are intended to be illustrative and not limiting:
referring to fig. 1, in the system for monitoring the settlement and inclination of the tower of the wind turbine based on line laser intensity measurement, a laser platform is arranged at a horizontal position relatively far away from the tower. The laser emitter 1 emits a laser beam with a specific wavelength and stable intensity at a set frequency (for example, 0.1 to 1 time/min) and serves as a light source for monitoring the settlement or inclination state of the tower. The cross-section of the laser beam output by the laser transmitter 1 is not absolutely circular, and in order to exclude the adverse effect of the beam cross-sectional shape on the downstream measurement, an aperture filter 2 is arranged downstream of the laser transmitter 1. The structure of the aperture filter 2 is similar to that of a camera aperture, and the diameter of a light-transmitting circular hole in the center of the aperture filter is adjustable, so that the cross section of a beam of laser light passing through the aperture filter 2 is circular with a set diameter.
Considering that the settlement and inclination of the tower barrel occur relatively slowly, the output laser intensity of the laser emitter 1 is attenuated to a certain degree, in order to eliminate the interference of the attenuation of the laser intensity on the measurement and analysis of the light intensity, the vertically arranged spectroscope 3 is arranged behind the aperture filter 2, the spectroscope 3 and the laser beam are arranged at an angle of 45 degrees, so that the laser beam reflects part of the laser (4-5%) due to the mirror reflection, the intensity of the part of the laser is measured and output by using the light intensity measuring instrument 4 which is vertically arranged with the part of the laser, the light intensity is displayed as a pulse signal on the oscilloscope 5, and the amplitude of the pulse is in direct proportion to the intensity of the reflected laser.
The unreflected laser beam passes through the beam splitter 3 and is converged by the convex lens 6 onto a vertically arranged charge coupled device 10 (also called CCD) fixed at a specific height on the tower 14. The focal length of the convex lens 6 depends on the relative distance between the laser platform and the tower, that is, the distance between the center of the convex lens 6 and the charge coupled device 10 is the focal length f1, an optical element needs to be arranged between the convex lens 6 and the charge coupled device 10 to form vertically distributed surface laser with a fixed width, and in the horizontal direction, the cross-sectional width of the surface laser is gradually reduced and finally converged on the charge coupled device 10 to form the line laser 11.
Behind the convex lens 6 is arranged a concave prism 7 with its axis placed horizontally. One side surface of the concave prism 7 is arc-shaped, and the other side surfaces are flat surfaces. The laser beam enters from the center of the concave prism 7 and forms a fan-shaped laser beam on the other side. The angle of the fan laser depends on the focal length of the concave prism 7: the smaller the focal length, the narrower the fan laser, i.e., the less likely it will diverge.
Arranging a surface laser filter 8 at a proper position behind the concave prism 7, wherein the surface laser filter 8 comprises a bracket, an upper baffle and a lower baffle; the support is fixed on a horizontal plane, the upper baffle and the lower baffle are respectively movably connected with the support, the upper baffle and the lower baffle are composed of stainless steel baffles which are flat and sharp in edge and can be adjusted in an up-and-down moving mode, and the fan-shaped laser forms approximate parallel surface laser 16 under the action of the baffles. (a parallel-plane laser whose width remains constant may be considered to be within a short distance between the laser filter 8 and the charge-coupled device 10).
Because the CCD 10 is sensitive to the light intensity, the light sensing element, i.e. the light sensing diode 15, has a limited range of light intensity measurement, and in order to avoid the damage caused by the excessive intensity of the incident laser, the light reducing mirror 9 with low light transmittance is arranged in front of the CCD, so that the light intensity density of the parallel surface laser 16 passing through the light reducing mirror 9 is greatly reduced, and the parallel surface laser can be successfully and safely captured by the CCD 10. Referring to fig. 2, the size of the ccd 10 should exceed the size of the plane-parallel laser 16 so that it can be projected on the ccd 10 in its entirety, leaving more edge area. In general, the area of the photosensitive region array of the charge coupled device 10 can be set larger than the light receiving area.
The charge coupled device 10 is also called CCD, and is a widely used digital camera image sensor. It is composed of a certain number of photodiodes 15 arranged uniformly (refer to fig. 2), the photodiodes 15 are arranged closely and have an extremely small size, macroscopically it can be understood that each photodiode 15 is a single point, which is referred to as a pixel for short. The photodiode 15 senses light, converts the light intensity into a digital signal, processes the digital signal by the signal processor 12, and transmits the digital signal to the computer 13 for storage and analysis. An opaque material is covered between the dimming mirror 9 and the charge coupled device 10 to eliminate background light (such as sunlight).
As shown in fig. 2, the charge coupled device 10 is composed of M × N photodiodes 15, the output data of which is transmitted to the computer 13 and can be processed into an M × N data matrix, each element value of which is in direct proportion to the intensity of light measured by the corresponding photodiode 15. The two-dimensional mapping of the data matrix can be used to obtain a cloud of light intensity distributions on the ccd 10.
Setting a laser transmitter 1 to transmit laser at a lower frequency (1 time/min), and combining the transmitted ith laser beam with an amplitude I output by an oscilloscope 5iAnd a data matrix A received by the computer 13i,M×NAnd performing calibration processing on the ith data matrix to eliminate the influence of the fluctuation of the laser intensity emitted by the laser emitter 1.
Considering that the structure of the wind turbine tower 14 is relatively stable, 1440 data per day are averaged, so that the system measurement error is reduced, and the data accuracy is improved.
Data on the first day
For reference, data of each day is recorded
In contrast, it is used to preliminarily determine the tilt status of the tower 14.
Combining FIG. 2 with FIG. 3, if the difference isValue matrix
A larger value (a larger value of both positive and negative values) in the process, it can be preliminarily determined that the tower 14 is settled or inclined. Because the position of the parallel surface laser 16 passing through the surface laser filter 8 is fixed, in fig. 3, if the tower 14 is tilted, the ccd 10 fixed on the tower will be tilted at the same angle, and even if the tilt angle α is small, the area and number of the photodiodes 15 onto which the parallel surface laser 16 is projected will vary.
For slight tilts that cannot be observed by the naked eye, the physical characteristics of the parallel-plane-based laser 16 can be sensitively captured: because the edge of the parallel surface laser 16 is sharp, that is, the intensity distribution diagram of the laser in fig. 2 is drawn along the vertical direction, the edge distribution characteristic shown in fig. 4 is presented, and the interval between the high value and the low value of the light intensity is only 1-2 pixels. The arrangement density of the photodiodes 15 in the charge coupled device 10 is often high, so that the spatial resolution of a single pixel is very high and can reach the level of 1-5 um/pixel.
According to a matrix of differences
The position where the median maximum (larger/smaller value) appears, and preliminarily determining the inclination direction of the tower 14, that is, if the median maximum (larger/smaller value) appears in the vertical direction, the tower 14 is inclined in a vertical plane parallel to the parallel-plane laser 16; and most likely in the left-right direction, means that the tower 14 is tilted in a vertical plane perpendicular to the parallel-faced laser 16. In addition, the actual situation may be more complicated, i.e., the worst case is not only in the up-down or left-right directions, illustrating the tilt of the tower 14 in a vertical plane that is either parallel or perpendicular to the parallel-plane laser 16.
To estimate the amount of tilt or angle of tilt of the tower or the CCD 10, a matrix of differences is used
The position where the median maximum (larger/smaller value) appears is selected from 5 columns and 5 rows of data adjacent to the position in the vertical and horizontal directions,an accumulation process (shown below) is performed to construct an M × 1 column matrix and a 1 × N row matrix.
Wherein i1 and i2 are the row ordinal number and the column ordinal number of the most significant occurrence position, respectively.
Drawing a one-dimensional graph of light intensity distribution by using the two matrixes, and obtaining data of day 1
The same treatment was done and the comparison was done directly. Referring to fig. 4, a tilt angle calculation method in the vertical direction is listed in conjunction with fig. 3 according to the number of changes in the position where the light intensity jump occurs, and tilt monitoring in the horizontal direction is similar to the tilt angle β calculation.
Wherein n is+And n_The number of pixels that respectively enter and leave the parallel-plane laser 16 illuminated area in FIG. 3 due to the tilt of the tower 14; l is the size of the single photodiode 15.
Comparison of n+And n_Can determine that the tower 14 is settled (n)+＝n_，m+＝m_) Inclination (n)+≠n_，m+≠m_) Or settlement and inclination occur singly/simultaneously (in combination with n)+And n_，m+And m_Comparative case of (1).
If only the inclination occurs, the inclination angles (α and β) of the tower 14 in the vertical plane parallel to and perpendicular to the parallel-plane laser 16 are obtained, and the overall inclination angle γ of the tower 14 is calculated as follows:
γ＝arccos(cosα×cosβ)
it should be noted that the above description is only a part of the embodiments of the present invention, and equivalent changes made to the system described in the present invention are included in the protection scope of the present invention. Persons skilled in the art to which this invention pertains may substitute similar alternatives for the specific embodiments described, all without departing from the scope of the invention as defined by the claims.
Claims (8)
1. A method for monitoring the settlement and inclination of a fan tower drum by adopting a fan tower drum settlement and inclination monitoring system based on line laser intensity measurement is characterized in that the system comprises a laser transmitter (1), an aperture filter (2), a spectroscope (3), a convex lens (6), a concave prism (7), a surface laser filter (8), a light reducing mirror (9) and a charge coupling element (10);
the laser emitter (1) is arranged on a horizontal plane facing the tower drum (14), and the charge coupling element (10) is vertically arranged on the outer wall of the tower drum (14) and faces the laser emitter (1); the aperture filter (2), the spectroscope (3), the convex lens (6), the concave prism (7), the surface laser filter (8) and the light reduction mirror (9) are sequentially arranged on a propagation path of laser emitted by the laser emitter (1); a light intensity measuring device is arranged on a reflected light path of the spectroscope (3); the light intensity measuring device and the charge coupling element (10) are respectively connected to a data processing system;
the method comprises the following steps:
the laser emitter (1) emits laser beams with specific wavelength and intensity at a preset frequency, the laser beams are adjusted into circular laser beams with preset diameters through the aperture filter (2), after the circular laser beams reach the spectroscope (3), reflected light beams reach the light intensity measuring device, measured light intensity data are sent to the data processing system, refracted light beams continue to be transmitted to the convex lens (6) to be converged, fan-shaped surface laser is formed after passing through the concave prism (7), the fan-shaped surface laser is adjusted into parallel surface laser (16) after passing through the surface laser filter (8), and the parallel surface laser (16) is irradiated on the charge coupling element (10) after the light intensity is reduced through the light reduction mirror (9); the data processing system realizes the settlement and inclination monitoring of the tower drum of the fan according to the parameters of the parallel surface laser (16) irradiated on the charge coupled device (10);
the settlement and inclination monitoring of the wind turbine tower barrel specifically comprises the following steps:
the charge coupling element (10) is composed of M multiplied by N photosensitive diodes (15), and output data of the charge coupling element are transmitted to a data processing system to be processed into an M multiplied by N data matrix;
the laser emitter (1) emits X beams of laser every day, and for the ith beam of laser emitted by the laser emitter (1), the amplitude I output by the light intensity measuring device is combinediAnd a data matrix A received by the data processing systemi,M×NAnd calibrating the ith data matrix according to the following formula to eliminate the influence of the fluctuation of the laser intensity emitted by the laser emitter (1):
averaging processes X data per day:
data of the first day
For reference, data of each day is recorded
Compared with the prior art, the method is used for preliminarily judging the inclination state of the tower drum:
if the difference matrix
If the value is larger, primarily judging that the tower barrel is settled or inclined; and according to the difference matrix
Preliminarily judging the inclination direction of the tower barrel at the position where the maximum value appears;
for estimating the inclination or tilt angle of the tower (14) or the CCD (10), a difference matrix is used
Selecting B columns and C rows of data adjacent to the position where the median maximum value appears in the vertical and horizontal directions, and performing accumulation processing to construct an M multiplied by 1 column matrix and a 1 multiplied by N row matrix:
wherein i1And i2The row ordinal number and the column ordinal number are respectively the position where the maximum value appears;
drawing a one-dimensional graph of light intensity distribution by using the two matrixes, and obtaining data of day 1
Carrying out the same treatment and directly comparing; calculating an inclination angle alpha in the vertical direction and an inclination angle beta in the horizontal direction according to the change quantity of the positions where the light intensity sudden change appears:
wherein n is+And n-The number of pixels respectively entering and leaving the irradiation area of the parallel plane laser (16) due to the inclination of the tower (14); l is the size of a single photodiode (15);
comparison of n+And n-The numerical value of (2) can judge whether the tower barrel is settled or inclined or whether the settlement and the inclination occur singly or simultaneously; if only the inclination occurs, calculating the overall inclination angle gamma of the tower (14) according to the inclination angle alpha of the tower (14) in the vertical direction and the inclination angle beta in the horizontal direction:
γ＝arccos(cosα×cosβ)。
2. the method for monitoring the settlement and inclination of the tower of a wind turbine by using the system for monitoring the settlement and inclination of the tower of a wind turbine based on line laser intensity measurement as claimed in claim 1, wherein the aperture of the aperture filter (2) is adjustable.
3. The method for monitoring the settlement and the inclination of the tower drum of the wind turbine by adopting the system for monitoring the settlement and the inclination of the tower drum of the wind turbine based on the line laser intensity measurement as claimed in claim 1, wherein the included angle between the spectroscope (3) and the laser emitted by the laser emitter (1) is 45 degrees, and the light intensity of the reflected light of the spectroscope (3) is 4% -5% of the light intensity of the laser emitted by the laser emitter (1).
4. The method for monitoring the settlement inclination of the tower drum of the fan by adopting the system for monitoring the settlement inclination of the tower drum of the fan based on the line laser intensity measurement as claimed in claim 1, wherein the light intensity measuring device comprises a light intensity measuring instrument (4) and an oscilloscope (5), the light intensity measuring instrument (4) is over against the reflected light path of the spectroscope (3), the light intensity measuring instrument (4) is connected with the oscilloscope (5), and the oscilloscope (5) is connected with the data processing system.
5. The method for monitoring the settlement inclination of the wind turbine tower by using the system for monitoring the settlement inclination of the wind turbine tower based on the line laser intensity measurement as claimed in claim 1, wherein the axis of the concave prism (7) is horizontally placed, the plane of the concave prism (7) faces the convex lens (6), and the cambered surface faces the surface laser filter (8).
6. The method for fan tower settlement inclination monitoring using a fan tower settlement inclination monitoring system based on line laser intensity measurement as claimed in claim 1, wherein the surface laser filter (8) comprises a bracket, an upper baffle and a lower baffle; the support is fixed on the horizontal plane, and overhead gage and lower baffle are respectively with support swing joint, and overhead gage and lower baffle are light tight material.
7. The method for monitoring the settlement inclination of the tower of the wind turbine by adopting the system for monitoring the settlement inclination of the tower of the wind turbine based on the line laser intensity measurement as claimed in claim 1, wherein the area of the photosensitive area array of the charge-coupled device (10) is larger than the area of received light; the height of the photosensitive area of the charge coupled device (10) is 2-3 times of the height of the received light.
8. The method for monitoring the settlement inclination of the tower of the wind turbine by using the system for monitoring the settlement inclination of the tower of the wind turbine based on the line laser intensity measurement as claimed in claim 1, wherein a light shielding shell is arranged between the light reduction mirror (9) and the charge coupled device (10).
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