CN107101595A - A kind of settled date mirror mirror attitude detection system and method - Google Patents
A kind of settled date mirror mirror attitude detection system and method Download PDFInfo
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- CN107101595A CN107101595A CN201710353914.XA CN201710353914A CN107101595A CN 107101595 A CN107101595 A CN 107101595A CN 201710353914 A CN201710353914 A CN 201710353914A CN 107101595 A CN107101595 A CN 107101595A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
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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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/245—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Image Analysis (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention relates to a kind of settled date mirror mirror attitude detection system and method, at least include image capture module, detection target and processing module, image capture module is arranged on the target back side, the quantity of image capture module and the sub- mirror quantity Matching of heliostat to be measured, each image capture module is by the sub- mirror of loophole photographic subjects on target, and the optical axis and the normal parallel of target of image capture module.The present invention realizes that the high-precision spatial position deviation distance of pixel scale is calculated by image processing techniques, accuracy of detection is high, image capture module and target predominantly detect the surface that part is installed in settled date mirror mirror, space efficiency utilization is high, and facilitate the movement of heliostat, effective guarantee detection efficiency.
Description
Technical field
The present invention relates to a kind of settled date mirror mirror attitude detection system and method, belong to the mirror shape technology neck of heliostat
Domain.
Background technology
Tower photo-thermal power station needs thousands of heliostats that sunshine is converged into heat dump region, in order to obtain more
High energy density, heliostat needs to be designed to the Discrete Surfaces with convergence characteristic, i.e., heliostat is by the sub- microscope group of multiple planes
Into, and there is the posture difference of three dimensions between sub- mirror.The expansion of mirror scale causes the operating distance of heliostat constantly to increase,
The hot spot that small angular deviation may result in heliostat reflection can not fall in heat dump region, so settled date mirror minute surface
The requirement on machining accuracy of shape is improved constantly, while needing a kind of high-precision detection method to ensure the space of settled date mirror mirror
Attitude accuracy.
Chinese patent CN105571470A provides a kind of contact measurement method based on displacement transducer, by simultaneously
The data for obtaining multiple displacement transducers obtain the spatial attitude information of settled date mirror mirror.The method of this contact is not suitable for
Accurate optical mirror plane, and displacement transducer can produce the effect of power to sub- mirror, influence the degree of accuracy of displacement data, it is difficult to it is real
Existing high-accuracy detection.Chinese patent CN103267495B provides a kind of by resolving stripe pattern acquisition settled date mirror surface-shaped letter
Breath.A width sine streak image can only once obtain the face shape change information with striped vertical direction used in this method, such as
Fruit is needed to obtain the spatial attitude information of each sub- mirror of heliostat, it is necessary to take multiple measurements, and this method is only applicable to
The connected continuous type minute surface in sub- mirror edge, it is impossible to realize high-precision real-time monitoring.
The content of the invention
It is an object of the invention to：For current technology can not meet it is existing the need for there is provided a kind of settled date mirror mirror appearance
State detecting system and method, the high-precision spatial position deviation distance for realizing pixel scale by image processing techniques are calculated, inspection
Survey precision high, image capture module and target predominantly detect the surface that part is installed in settled date mirror mirror, space utilization effect
Rate is high, and facilitates the movement of heliostat, effective guarantee detection efficiency.
The technical solution adopted in the present invention is：A kind of settled date mirror mirror attitude detection system, at least including IMAQ
Module, detection target and processing module, image capture module be arranged on the target back side, the quantity of image capture module with it is to be measured
The sub- mirror quantity Matching of heliostat, each image capture module is adopted by the sub- mirror of loophole photographic subjects on target, and image
Collect the optical axis of module and the normal parallel of target.
A kind of settled date mirror mirror attitude detecting method, it is characterised in that：Comprise the following steps：
（1）, heliostat is fixed on to measured zone, and adjust to state to be measured；
（2）, according on heliostat sub- mirror interval adjust image capture module spacing so that image capture module and heliostat
Sub- mirror is mutually matched；
（3）, shoot the sub- mirror of respective target respectively by image capture module, obtain corresponding target area image；
（4）, each image capture module by the image transmitting collected to processing module, for image recognition, field of view center
The data processing work that coordinate is calculated and attitude angle is calculated；
（5）, group mirror minute surface and the earth plane-parallel when, the field of view center of image capture module should be with the IMAQ mould
The optical center of block is overlapped, and now coordinate of the field of view center on target is (x0, y0)；
（6）, utilize the region recognition algorithm of image procossing, calculate the target coordinate system of the actual field of view center of image capture module
Coordinate is the practical field of view center of image capture module, according to the arrangement mode of mark in visual field, utilizes the phase of image procossing
It is (x1, y1) to close algorithm and can calculate now coordinate of the field center on target；
（7）, the corresponding attitude angle of single sub- mirror X-axisAttitude angle corresponding with Y-axisMeet following relation：
(x0, y0) is the target coordinate system coordinate of image capture module optical center in formula, and (x1, y1) is that image capture module is real
The target coordinate system coordinate of border field of view center, h is vertical range of the target to Zi Jing centers；
（8）, multiple images acquisition module can simultaneously gather and transmit image to processing module, calculate each by the 5th step to the 7th step
The spatial attitude of individual sub- mirror, the corresponding attitude angle of two axles of output, realizes the quick detection of separate unit settled date mirror mirror posture.
Beneficial effects of the present invention：
1. the present invention uses the contactless settled date mirror mirror attitude detection system based on light reflection law, pass through image
The locus deviation at acquisition module practical field of view center, is not contacted directly with sub- mirror, it is ensured that the accuracy of detection；
2. present system is simple in construction, by image processing techniques realize the high-precision spatial position deviation of pixel scale away from
From calculating, accuracy of detection is high；
3. the present invention calculates the Accuracy Space posture of each sub- mirror based on reflection law, to continuous type minute surface and divergence type minute surface
It can realize that high-precision spatial attitude is resolved, and need not additionally increase the Preprocessing Algorithm of complexity, reduce drawing for error
Enter；
4. image capture module and target etc. predominantly detect the surface that part is installed in settled date mirror mirror in the present invention, often
Platform heliostat, which only needs to be moved to respective regions, can start detection, it is not necessary to extra work condition, it is possible to increase space profit
With efficiency, and facilitate the movement of heliostat, effective guarantee detection efficiency.
Brief description of the drawings
Fig. 1 is the detecting system schematic diagram of the present invention；
Fig. 2 is the sub- mirror spatial attitude schematic diagram in the present invention；
Fig. 3 is the image capture module visual field schematic diagram in the present invention；
Fig. 4 is the sub- mirror posture decomposing schematic representation in the present invention.
In figure：1. image capture module；2. target；3. processing module；4. sub- mirror；5. heliostat.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of settled date mirror mirror attitude detection system, including image capture module 1, the detection and of target 2
Processing module 3, the quantity Matching of sub- mirror 4 of the quantity of image capture module 1 and heliostat 5 to be measured, target 2 by demarcation with it is big
Ground plane-parallel；Image capture module 1 is arranged on the back side of target 2, and each image capture module 1 passes through the printing opacity on target 2
The sub- mirror 4 of hole photographic subjects, and the optical axis and the normal parallel of target of image capture module 1；Image capture module 1 is by the figure of collection
Calculated as being sent to processing module 3 by data wire.
Such as a kind of describing mode that Fig. 2 is the sub- spatial attitude of mirror 4, that is, pass through the attitude angle around two orthogonal X-axis and Y-axisWithState the spatial attitude of sub- mirror 4.Heliostat 5 to be measured is made up of a number of sub- mirror 4, when every sub- mirror 4 is kept
During the spatial attitude of setting, the discrete convergence curved surface that they are constituted is the mirror shape of heliostat 5.Because sub- mirror 4 is fixed
Installation site in solar eyepiece 5 is fixed, so by detecting that the spatial attitude of sub- mirror 4 can accurately describe the minute surface face of heliostat 5
Shape.
A kind of single sub- mirror attitude detecting method of separate unit heliostat, comprises the following steps：
（1）, as shown in figure 1, heliostat is fixed on into measured zone, and adjust to state to be measured；
（2）, according on heliostat sub- mirror interval adjust image capture module spacing so that image capture module and heliostat
Sub- mirror is mutually matched；
（3）, shoot the sub- mirror of respective target respectively by image capture module, obtain corresponding target area image；
（4）, each image capture module by the image transmitting collected to processing module, for image recognition, field of view center
The data processing work that coordinate is calculated and attitude angle is calculated；
（5）, as shown in Figure 3 a, when the minute surface of group mirror is with the earth plane-parallel, the field of view center of image capture module should be with
The optical center of the image capture module is overlapped, and now coordinate of the field of view center on target is (x0, y0)；
（6）, utilize the region recognition algorithm of image procossing, calculate the target coordinate system of the actual field of view center of image capture module
Coordinate is the practical field of view center of image capture module（Fig. 3 b）, according to the arrangement mode of mark in visual field, at image
It is (x1, y1) that the related algorithm of reason, which can calculate now coordinate of the field center on target,；
（7）, as shown in figure 4, the corresponding attitude angle of single sub- mirror X-axisAttitude angle corresponding with Y-axisMeet following relation：
(x0, y0) is the target coordinate system coordinate of image capture module optical center in formula, and (x1, y1) is that image capture module is real
The target coordinate system coordinate of border field of view center, h is vertical range of the target to Zi Jing centers；
（8）, multiple images acquisition module can simultaneously gather and transmit image to processing module, calculate each by the 5th step to the 7th step
The spatial attitude of individual sub- mirror, the corresponding attitude angle of two axles of output, realizes the quick detection of separate unit settled date mirror mirror posture.
The embodiment to the present invention is described above, but the present invention is not limited to above description.For this
For the technical staff in field, any equal modifications and substitutions to the technical program are all within the scope of the invention.Cause
This, the impartial conversion and modification made without departing from the spirit and scope of the invention all should be contained within the scope of the invention.
Claims (2)
1. a kind of settled date mirror mirror attitude detection system, it is characterised in that：At least include image capture module, detection target and
Processing module, image capture module is arranged on the target back side, the quantity of image capture module and the sub- mirror quantity of heliostat to be measured
Matching, each image capture module is by the sub- mirror of loophole photographic subjects on target, and the optical axis and mark of image capture module
The normal parallel of plate.
2. a kind of settled date mirror mirror attitude detecting method, it is characterised in that：Comprise the following steps：
（1）, heliostat is fixed on to measured zone, and adjust to state to be measured；
（2）, according on heliostat sub- mirror interval adjust image capture module spacing so that image capture module and heliostat
Sub- mirror is mutually matched；
（3）, shoot the sub- mirror of respective target respectively by image capture module, obtain corresponding target area image；
（4）, each image capture module by the image transmitting collected to processing module, for image recognition, field of view center
The data processing work that coordinate is calculated and attitude angle is calculated；
（5）, group mirror minute surface and the earth plane-parallel when, the field of view center of image capture module should be with the IMAQ mould
The optical center of block is overlapped, and now coordinate of the field of view center on target is (x0, y0)；
（6）, utilize the region recognition algorithm of image procossing, calculate the target coordinate system of the actual field of view center of image capture module
Coordinate is the practical field of view center of image capture module, according to the arrangement mode of mark in visual field, utilizes the phase of image procossing
It is (x1, y1) to close algorithm and can calculate now coordinate of the field center on target；
（7）, the corresponding attitude angle of single sub- mirror X-axisAttitude angle corresponding with Y-axisMeet following relation：
(x0, y0) is the target coordinate system coordinate of image capture module optical center in formula, and (x1, y1) is that image capture module is real
The target coordinate system coordinate of border field of view center, h is vertical range of the target to Zi Jing centers；
（8）, multiple images acquisition module can simultaneously gather and transmit image to processing module, calculate each by the 5th step to the 7th step
The spatial attitude of individual sub- mirror, the corresponding attitude angle of two axles of output, realizes the quick detection of separate unit settled date mirror mirror posture.
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| CN201710353914.XA CN107101595B (en) | 2017-05-18 | 2017-05-18 | A kind of settled date mirror mirror attitude detection system and method |
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| CN201710353914.XA CN107101595B (en) | 2017-05-18 | 2017-05-18 | A kind of settled date mirror mirror attitude detection system and method |
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| CN107101595B CN107101595B (en) | 2019-05-14 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108680134A (en) * | 2018-05-15 | 2018-10-19 | 中测测试科技（杭州）有限公司 | The on-line checking positioning device and method of solar energy thermal-power-generating settled date mirror-type face installation |
| CN110118527A (en) * | 2019-03-29 | 2019-08-13 | 浙江中控太阳能技术有限公司 | A kind of BCS system accuracy detection method and device |
| CN114018173A (en) * | 2021-11-01 | 2022-02-08 | 江苏鑫晨光热技术有限公司 | Heliostat surface shape initial normal outdoor measurement system and method |
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| CN108680134A (en) * | 2018-05-15 | 2018-10-19 | 中测测试科技（杭州）有限公司 | The on-line checking positioning device and method of solar energy thermal-power-generating settled date mirror-type face installation |
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| CN114018173A (en) * | 2021-11-01 | 2022-02-08 | 江苏鑫晨光热技术有限公司 | Heliostat surface shape initial normal outdoor measurement system and method |
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