CN105758024A - Disc-type tracking system focusing method - Google Patents
Disc-type tracking system focusing method Download PDFInfo
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- CN105758024A CN105758024A CN201610156634.5A CN201610156634A CN105758024A CN 105758024 A CN105758024 A CN 105758024A CN 201610156634 A CN201610156634 A CN 201610156634A CN 105758024 A CN105758024 A CN 105758024A
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- China
- Prior art keywords
- vector
- normal
- dish
- eyeglass
- tracks
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
- F24S50/80—Arrangements for controlling solar heat collectors for controlling collection or absorption of solar radiation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
- F24S50/20—Arrangements for controlling solar heat collectors for tracking
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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
- Y02E10/47—Mountings or tracking
Abstract
The invention discloses a disc-type tracking system focusing method which comprises the following steps: calculating a theoretic normal of each lens of a disc-type tracking system according to a theoretic angular point of the lens and a coordinate of a target point on the basis of the law of reflection; setting a solar simulation light source and a CCD camera on the central line of the disc-type tracking system, and confirming a practical normal of the lens in the process that light of the solar simulation light source is reflected to the CCD camera through the lens so as to form pixel; focusing according to practical difference of the practical normal and the theoretic normal. By adopting the disc-type tracking system focusing method designed according to the principle, not only is focusing precision ensured, but also the focusing difficulty is alleviated, the focusing time is shortened, and the disc-type tracking system focusing method is applicable to large-scale production.
Description
Technical field
The application belongs to photo-thermal power generation technical field, particularly relates to a kind of dish-style and follows the tracks of system focus adjustment method.
Background technology
Solar energy is a kind of Renewable resource, almost inexhaustible, utilizes the green energy resource of solar energy generation technology, has a extensive future.
In solar power system, the difference according to spot mode, it is broadly divided into slot type, tower and dish-style, dish-style generating is in that relative to the advantage of other two ways:
(1), the module deployment way of flexibility.
(2), higher focusing ratio.
(3), convenient two-dimensional tracking.
(4), hydropenia environment is adapted to.
(5) equipment fault is little to electrical network interference.
Following the tracks of the focusing of system at present in dish-style, mainly have two ways, one is the focusing of color target, and another kind is directly to focus facing to the sun.Color target focusing structure is simple, easy to operate, but in focussing process, application condition is big, and the energy of dish-style breach of cannot filling a vacancy, and causes that energy is at objective plane skewness, and engine efficiency reduces；Day focusing is existed two problems, and one is that energy height is concentrated, and focus set is required strict, and there is certain risk, because being engraved in rotation during disc, focusing work is caused certain difficulty, and two is that focusing relies on weather, is substantially reduced focusing efficiency.
Summary of the invention
It is an object of the invention to provide a kind of dish-style and follow the tracks of system focus adjustment method, to overcome deficiency of the prior art.
For achieving the above object, the present invention provides following technical scheme:
The embodiment of the present application discloses a kind of dish-style and follows the tracks of system focus adjustment method, including:
Theoretical angle point according to eyeglass and the coordinate of impact point, and utilize reflection law can obtain the theoretical normal of each eyeglass of system；
The centrage that dish-style follows the tracks of system arranges a sun simulating light source and a CCD camera, is formed by lens reflecting to CCD camera according to the light of sun simulating light source in the process of pixel and may determine that the actual normal of eyeglass；
Focused by the actual difference of actual normal with theoretical normal.
Preferably, following the tracks of in system focus adjustment method in above-mentioned dish-style, described sun simulating light source and CCD camera are positioned at dish-style and follow the tracks of 2 times of focal length places of system.
Preferably, following the tracks of in system focus adjustment method in above-mentioned dish-style, described sun simulating light source is light guide plate, and described light guide plate is made up of the multiple little illuminating lamp that can individually be unlocked/close.
Preferably, following the tracks of in system focus adjustment method in above-mentioned dish-style, the theoretical normal N of described eyeglass utilizes reflection law vector equation to calculate:
N=(s+r)/(2*cos (Fe/2))
Wherein:
S is the unit vector of solar vector S；
R is the unit vector of the reflection vector R of eyeglass；
Fe is the angle between the reflection vector R of solar vector S and eyeglass.
Preferably, following the tracks of in system focus adjustment method in above-mentioned dish-style, described Fe calculates by taking the dot product of unit vector s and unit reflection vector:
Cos (Fe)=s ● r
Wherein:
S=S/ size S；
R=R/ size R.
Preferably, follow the tracks of in system focus adjustment method in above-mentioned dish-style, by two unit vector n with find ca reflection vector and the angle of eyeglass normal
Wherein:
N is the unit vector of normal N；
Ca is the unit vector of reflection light Ca；
It is the angle of normal vector and reflected ray vector,
The then light vector of light guide plate:
Compared with prior art, it is an advantage of the current invention that: present invention light according to light guide plate in actual focussing process forms the actual normal that may determine that eyeglass in the process of pixel by lens reflecting to CCD camera, then passes through the actual difference with theoretical normal and carries out corresponding adjustment.Not only be ensure that the precision of focusing by the tracking system focus adjustment method of this principle design, and reduce the difficulty of focusing and the time of focusing, it is adaptable to produce in batches on a large scale.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 show the principle schematic of the focusing system related in the specific embodiment of the invention；
Principle schematic that point calculates that Fig. 2 show in the specific embodiment of the invention specular target；
The principle schematic that Fig. 3 show in the specific embodiment of the invention minute surface theory method line computation；
The design principle schematic diagram that Fig. 4 show in the specific embodiment of the invention light guide plate；
The schematic diagram data of detection that Fig. 5 show in the specific embodiment of the invention light.
Detailed description of the invention
Shown in Fig. 1, this application discloses a kind of novel dish type and follow the tracks of system focus adjustment method, the coordinate of its theoretical angle point according to eyeglass and impact point, and utilize reflection law can obtain the theoretical normal of each eyeglass.Then according to the theoretical normal of eyeglass and the CCD camera coordinate being read out pixel, recycling reflection law may determine that the light that each position of eyeglass is corresponding, and these light can design a light guide plate, carrys out simulated solar light source.In actual focussing process, light according to light guide plate forms the actual normal that may determine that eyeglass in the process of pixel by lens reflecting to CCD camera, then passes through the actual difference with theoretical normal and carries out corresponding adjustment.Not only be ensure that the precision of focusing by the tracking system of this principle design focusing program, and reduce the difficulty of focusing and the time of focusing, it is adaptable to produce in batches on a large scale.
Below the technical scheme in the embodiment of the present invention is described in detail, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the premise not making creative work, broadly fall into the scope of protection of the invention.
In the present embodiment, this focus adjustment method mainly includes 4 parts: the design of impact point, the calculating of eyeglass theory normal, the design of light guide plate and light detection data.
(1) about the calculating of impact point.The dish-style structure of each tracking system has 40～50 groups of eyeglasses, and often group eyeglass arrives the impact point of objective plane is different, as shown in Figure 2.This ensure that the solar energy that disc converges is uniform in the Energy distribution of receiving plane, namely reach every annual electricity generating capacity the highest.
(2) about the calculating of eyeglass theory normal.When eyeglass point coordinates and corresponding coordinate of ground point are known, the reflection vector (R) of eyeglass can be known according to Fig. 3, owing to solar vector (S) is known, lens set normal (N) can utilize reflection law vector equation to calculate:
N=(s+r)/(2*cos (Fe/2))
Wherein:
S is the unit vector of S
R is the unit vector of R
Fe is the angle between solar vector (S) and reflection vector (R)
Fe can pass through to take the dot product of unit vector (s) and unit reflection vector and calculate
Fe can pass through to take the dot product of unit vector (s) and unit reflection vector and calculate
Cos (Fe)=s ● r
Wherein:
S=S/ size (S), wherein, size S: be the concrete numerical value of vector S, the coordinate such as the x, y, z of vector S is (1,2,3), then being sized to of S
R=R/ size (R)
(3) design of light guide plate.Photographing unit and light guide plate are positioned on video disc condenser centrage, are about 2 times of focal length with the distance on distance video disc condenser summit, as shown in Figure 4.Position of camera, lens set position, and lens set vector are given, utilize reflection law to calculate the position of light in light guide plate, it is ensured that light is reflexed to photographing unit by lens set.
First, reflection vector and the angle of lens set normal are found by two unit vectors
Wherein:
N is the unit vector of normal N
Ca is the unit vector of reflection light Ca
It it is the angle of normal vector and reflected ray vector
The then light vector of light guide plate:
Wherein the quantity of light guide plate glazed thread depends on the surface waviness of minute surface.
(4) light detection data.In focussing process, single light is unlocked, and the imaging reflecting light is recorded by CCD camera.Then, close the light just opened, be then turned on next light.Repeat this step until all light have both passed through and have been unlocked/close, and camera imaging is all recorded every time.What Fig. 5 showed is the possible appearance of complex light imaging, the wherein intensity of the differential responses light intensity of color.
Can deriving the actual normal of eyeglass according to the position of light in actually detected data and light guide plate, then contrast with the theoretical normal of eyeglass, difference therein is exactly the amount that eyeglass needs to adjust.
It should be noted that, in this article, the relational terms of such as first and second or the like is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the process of a series of key element, method, article or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment.When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, article or equipment.
The above is only the detailed description of the invention of the application; it should be pointed out that, for those skilled in the art, under the premise without departing from the application principle; can also making some improvements and modifications, these improvements and modifications also should be regarded as the protection domain of the application.
Claims (6)
1. a dish-style follows the tracks of system focus adjustment method, it is characterised in that including:
Theoretical angle point according to eyeglass and the coordinate of impact point, and utilize reflection law can obtain the theoretical normal of each eyeglass of system；
The centrage that dish-style follows the tracks of system arranges a sun simulating light source and a CCD camera, is formed by lens reflecting to CCD camera according to the light of sun simulating light source in the process of pixel and may determine that the actual normal of eyeglass；
Focused by the actual difference of actual normal with theoretical normal.
2. dish-style according to claim 1 follows the tracks of system focus adjustment method, it is characterised in that: described sun simulating light source and CCD camera are positioned at dish-style and follow the tracks of 2 times of focal length places of system.
3. dish-style according to claim 2 follows the tracks of system focus adjustment method, it is characterised in that: described sun simulating light source is light guide plate, and described light guide plate is made up of the multiple little illuminating lamp that can individually be unlocked/close.
4. dish-style according to claim 3 follows the tracks of system focus adjustment method, it is characterised in that: the theoretical normal N of described eyeglass utilizes reflection law vector equation to calculate:
N=(s+r)/(2*cos (Fe/2))
Wherein:
S is the unit vector of solar vector S；
R is the unit vector of the reflection vector R of eyeglass；
Fe is the angle between the reflection vector R of solar vector S and eyeglass.
5. dish-style according to claim 4 follows the tracks of system focus adjustment method, it is characterised in that: described Fe calculates by taking the dot product of unit vector s and unit reflection vector:
Cos (Fe)=s r
Wherein:
S=S/ size S；
R=R/ size R.
6. dish-style according to claim 3 follows the tracks of system focus adjustment method, it is characterised in that: by two unit vector n and find ca reflection vector and the angle of eyeglass normal
Wherein:
N is the unit vector of normal N；
Ca is the unit vector of reflection light Ca；
It is the angle of normal vector and reflected ray vector,
The then light vector of light guide plate:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610156634.5A CN105758024A (en) | 2016-03-18 | 2016-03-18 | Disc-type tracking system focusing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610156634.5A CN105758024A (en) | 2016-03-18 | 2016-03-18 | Disc-type tracking system focusing method |
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| CN105758024A true CN105758024A (en) | 2016-07-13 |
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| CN201610156634.5A Pending CN105758024A (en) | 2016-03-18 | 2016-03-18 | Disc-type tracking system focusing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102421A (en) * | 2017-06-23 | 2017-08-29 | 大连宏海新能源发展有限公司 | The determination method of dish-style tracking system focusing program ray position |
| CN107315885A (en) * | 2017-07-05 | 2017-11-03 | 大连宏海新能源发展有限公司 | The uniform disc type solar energy system focus adjustment method of energy flow distribution |
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| JPS55153903A (en) * | 1979-05-18 | 1980-12-01 | Agency Of Ind Science & Technol | Angle adjusting method for plane mirror in reflecting mirror for heliostat |
| US5477332A (en) * | 1992-12-17 | 1995-12-19 | Mcdonnell Douglas Corporation | Digital image system and method for determining surface reflective and refractive characteristics of objects |
| US5982481A (en) * | 1996-10-01 | 1999-11-09 | Mcdonnell Douglas Corporation | Alignment system and method for dish concentrators |
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| CN102981240A (en) * | 2012-11-26 | 2013-03-20 | 华电电力科学研究院 | Focusing method for disc-type solar energy collector |
| CN104062743A (en) * | 2014-07-07 | 2014-09-24 | 大连宏海新能源发展有限公司 | Automatic focusing system used for regulating solar condensing lens and focusing method thereof |
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2016
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Patent Citations (6)
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|---|---|---|---|---|
| JPS55153903A (en) * | 1979-05-18 | 1980-12-01 | Agency Of Ind Science & Technol | Angle adjusting method for plane mirror in reflecting mirror for heliostat |
| US5477332A (en) * | 1992-12-17 | 1995-12-19 | Mcdonnell Douglas Corporation | Digital image system and method for determining surface reflective and refractive characteristics of objects |
| US5982481A (en) * | 1996-10-01 | 1999-11-09 | Mcdonnell Douglas Corporation | Alignment system and method for dish concentrators |
| CN102901465A (en) * | 2012-10-29 | 2013-01-30 | 大连宏海新能源发展有限公司 | Equipment and method for measuring slope error of optical lens |
| CN102981240A (en) * | 2012-11-26 | 2013-03-20 | 华电电力科学研究院 | Focusing method for disc-type solar energy collector |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102421A (en) * | 2017-06-23 | 2017-08-29 | 大连宏海新能源发展有限公司 | The determination method of dish-style tracking system focusing program ray position |
| CN107102421B (en) * | 2017-06-23 | 2019-05-21 | 大连宏海新能源发展有限公司 | The determination method of dish-style tracking system focusing program ray position |
| CN107315885A (en) * | 2017-07-05 | 2017-11-03 | 大连宏海新能源发展有限公司 | The uniform disc type solar energy system focus adjustment method of energy flow distribution |
| CN107315885B (en) * | 2017-07-05 | 2020-11-03 | 大连宏海新能源发展有限公司 | Disc type solar system focusing method with uniformly distributed energy flow |
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Application publication date: 20160713 |
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