CN105739057B - Butterfly tracking system eyeglass focus adjustment method - Google Patents
Butterfly tracking system eyeglass focus adjustment method Download PDFInfo
- Publication number
- CN105739057B CN105739057B CN201610156475.9A CN201610156475A CN105739057B CN 105739057 B CN105739057 B CN 105739057B CN 201610156475 A CN201610156475 A CN 201610156475A CN 105739057 B CN105739057 B CN 105739057B
- Authority
- CN
- China
- Prior art keywords
- eyeglass
- butterfly
- angle
- camera
- tracking system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/183—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors specially adapted for very large mirrors, e.g. for astronomy, or solar concentrators
Abstract
This application discloses a kind of butterfly tracking system eyeglass focus adjustment method, including：(1), light guide plate and camera be set on the center line of butterfly tracking system, the light guide plate by can individually by the point light source groups of unlatching/closing into；(2), according to the coordinate of the spot light coordinate of determination, lens reflecting point coordinates and camera, calculate the normal line vector corresponding to each pixel in camera, according to the angle of normal line vector and the normal line vector of butterfly eyeglass parabolic equation, the regulation angle of eyeglass is drawn；(3), according to the relation of lens surface slope and normal line vector, mirror angle tangent line is gone out using least square fitting, by the angle compared with desired lens angle, difference size is the regulated quantity of eyeglass.The inventive method advantage includes：More accurately calculate the error angle of eyeglass；Reduce the time for obtaining the measurement data needed for eyeglass focusing；Focused suitable for batch.The time is saved, improves focusing efficiency.
Description
Technical field
This patent is related to eyeglass focusing correlative technology field, more particularly to a kind of butterfly tracking system eyeglass focusing side
Method.
Background technology
Solar energy is one of preferable energy of future society, and its recyclability is the energy strategy hotly contested spot.At present too
Positive energy solar light-heat power-generation technology reaches its maturity, and has basically reached business and has used required requirement.Its advantage is can be continuous
Generate electricity, can peak regulation, overall efficiency it is high, but also have the shortcomings of electrical power storage is difficult, light energy distribution inequality.
Disc type solar energy solar-thermal generating system is to utilize rotational paraboloid mirror, and incident sunlight is met in a focus.
The solar receiver for being placed on focal point collects the heat energy of higher temperature, and heating working medium is with driving steam turbine.So as to by heat energy
It is converted into electric energy.But during adjustment, each eyeglass is difficult to make the confocal point of sunshine, therefore develop a focusing system particularly
It is important.
Chinese patent application publication No.：CN102455499A, on May 16 2012 Shen Qing Publication time, disclose one kind
The preparation method of super condensation device, electronic controller is combined by electronic controller, stepper motor etc. and realizes tracking system
Focusing.The patent, which is disadvantageous in that, not to be illustrated how to detect eyeglass regulated quantity by electronic control system.
Chinese patent Authorization Notice No.:CN202973608U, apply for June 5 2013 day for announcing, disclose a kind of butterfly
The focusing system of Stirling solar thermoelectric device, it is connected by servo adjustment module with rotation debugging platform so that solar energy
Thermoelectric device realizes focusing.The patent is disadvantageous in that degree of regulation is not high.
Chinese patent application publication No.：CN103487924A, on January 1 2014 Shen Qing Publication time, it is more to disclose one kind
Bulk combination paraboloidal mirror solar energy condensation board Atomatic focusing method, it is actual that current paraboloidal mirror is found out by external imaging device
Focus and the skew of source location inspection, regulated quantity is calculated with reference to optical imaging concept.The patent can realize high-precision regulation, but
It is that scheme is limited by many adjustable parameters, is not easy to reach perfect condition.
The content of the invention
It is an object of the invention to provide a kind of butterfly tracking system eyeglass focus adjustment method, with overcome it is of the prior art not
Foot.
To achieve the above object, the present invention provides following technical scheme：
The embodiment of the present application discloses a kind of butterfly tracking system eyeglass focus adjustment method, including：
(1), light guide plate and camera be set on the center line of butterfly tracking system, the light guide plate is by can independent quilt
The point light source groups of unlatching/closing into；
(2), according to the coordinate of the spot light coordinate of determination, lens reflecting point coordinates and camera, camera is calculated
In normal line vector corresponding to each pixel, according to normal line vector and the folder of the normal line vector of butterfly eyeglass parabolic equation
Angle, draw the regulation angle of eyeglass；
(3), according to the relation of lens surface slope and normal line vector, go out mirror angle using least square fitting and cut
Line, by the angle compared with desired lens angle, difference size is the regulated quantity of eyeglass.
Preferably, in above-mentioned butterfly tracking system eyeglass focus adjustment method, in the step (2), the point on light guide plate
Light source is transmitted into camera by eyeglass, opens the spot light on light guide plate successively, reflection light can be recorded with camera
Pixel value and reflected ray vector, for calculating the normal line vector of each pixel.
Preferably, in above-mentioned butterfly tracking system eyeglass focus adjustment method, in the step (2), butterfly eyeglass parabolic
Line equation：
4fZ=X2+Y2+A·X+B·Y+C·XY
F is focal length in formula, and A, B are constant, C=0；
The surface slope of parabolic equation in the X direction is：
According to parameter A, the regulated quantity of the eyeglass is calculated.
Preferably, in above-mentioned butterfly tracking system eyeglass focus adjustment method, regulated quantity A is equal to tan (A1), and wherein A1 is
The offset A1 that system is initially set.
Compared with prior art, the advantage of the invention is that：
1st, the error angle of eyeglass is more accurately calculated；
2nd, the time for obtaining the measurement data needed for eyeglass focusing is reduced；
3rd, focused suitable for batch.The time is saved, improves focusing efficiency.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 show the system principle schematic diagram that butterfly tracking system eyeglass is focused in the specific embodiment of the invention；
Fig. 2 is shown in the specific embodiment of the invention has 2 degree of angular error eyeglass slope oblique lines without error of focusing and one
Comparison schematic diagram；
Fig. 3 show the coordinate system schematic diagram that dish-style concentrator in the specific embodiment of the invention uses；
Fig. 4 show linear function schematic diagram in the specific embodiment of the invention；
Fig. 5 show surface slope schematic diagram in the specific embodiment of the invention.
Embodiment
With reference to shown in Fig. 1, butterfly tracking system eyeglass focus adjustment method, including：
(1), light guide plate and camera be set on the center line of butterfly tracking system, the light guide plate is by can independent quilt
The point light source groups of unlatching/closing into；
(2), according to the coordinate of the spot light coordinate of determination, lens reflecting point coordinates and camera, camera is calculated
In normal line vector corresponding to each pixel, according to normal line vector and the folder of the normal line vector of butterfly eyeglass parabolic equation
Angle, draw the regulation angle of eyeglass；
(3), according to the relation of lens surface slope and normal line vector, go out mirror angle using least square fitting and cut
Line, by the angle compared with desired lens angle, difference size is the regulated quantity of eyeglass.
In step (2), the spot light on light guide plate is transmitted into camera by eyeglass, opens the point light on light guide plate successively
Source, the pixel value and reflected ray vector of reflection light can be recorded with camera, for calculate the normal of each pixel to
Amount.
In step (2), butterfly eyeglass parabolic equation：
4fZ=X2+Y2+A·X+B·Y+C·XY
F is focal length in formula, and A, B are constant, can be with during examination because the eyeglass of disc must first pass through examination
Ensure eyeglass without deformation and distortion, so taking C to be equal to 0.
Analysis focusing principle is carried out by taking X-direction as an example, Y-direction is similar.The surface of disc parabolic equation in the X direction is oblique
Rate is：
According to parameter A, the regulated quantity of the eyeglass is calculated.
Shown in as shown in Figure 2, one has 2 degree of angular error eyeglass slope oblique lines to compare without error of focusing and one.
In the technical scheme, parabolical general equation is introduced, and is determined that Warp parameters C is 0.According to parabola
General equation, export the surface curvature equation of eyeglass, it is determined that regulated quantity A.If the offset A1 that system is initially set, then
Described regulated quantity A is equal to tan (A1).The light guide plate and CCD camera of known location coordinate calculate by reflection law, accuracy
Up to 2mrad.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, detailed retouch is carried out to the technical scheme in the embodiment of the present invention
State, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on the present invention
In embodiment, the every other implementation that those of ordinary skill in the art are obtained on the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
The coordinate system that minute surface focusing system dish-style concentrator uses is as shown in Figure 3.Z axis and dish-style concentrator center line Cheng Zhi
Line and X and Y-axis and its axle that is orthogonal.
Concentrator shape general equation is as follows：
4*F*Z=X2+Y2
F represents focal length in formula, then F (X, Y, Z)=X2+Y2-4*F*Z
For each pixel of the light of mirror-reflection meeting, minute surface location of pixels surface normal can calculate.Normal direction
Vector (N) equation：N=2*Xi+2*Yj-4*Fk.
I in above formula, j and k represent orthogonal unit vectors.
X and the normal vector slope of Y-direction are then：Slope (X)=2*F/X, slope (Y)=2*F/Y.
The relation of minute surface measuring point slope and normal vector slope is as follows：The surface normal slope of mirror slope=1/
Therefore, mirror slope equation is then：Minute surface X slopes=- X/2/F, minute surface Y slopes=- Y/2/F
Mirror slope is the linear function from disc vertex distance as shown in Figure 4.Linear function as surface slope
Contribute to simple readily estimation.
Surface slope is then calculated as follows：
The each pixel for the light that camera capture is grasped is used for calculating corresponding to each location of pixels reflexes to photograph by light
The minute surface surface normal on the surface of machine.Before normal vector calculating, the XY positions of pixel on camera are calculated.When minute surface is whole
After the completion of light image vegetarian refreshments calculates, surface slope is with regard to that can be depicted as the distance function as shown in Figure 5 from disc vertex.Calculate
The least square curve fit of data point.The traditional method of indicating the pronunciation of a Chinese character angle that intercept is formed with Z axis is exactly the angle of minute surface.The angle is with requiring angle
Difference between degree is exactly the amount that minute surface needs to adjust.
Finally, it is to be noted that, term " comprising ", "comprising" or its any other variant be intended to it is non-exclusive
Property includes, so that process, method, article or equipment including a series of elements not only include those key elements, and
Also include the other element that is not expressly set out, or also include for this process, method, article or equipment inherently
Key element.
Claims (4)
- A kind of 1. butterfly tracking system eyeglass focus adjustment method, it is characterised in that including：(1), light guide plate and camera are set on the center line of butterfly tracking system, the light guide plate is by can individually be opened The point light source groups for opening/closing into；(2), according to the coordinate of the spot light coordinate of determination, lens reflecting point coordinates and camera, calculate every in camera Normal line vector corresponding to individual pixel, the normal of normal line vector and butterfly eyeglass parabolic equation according to corresponding to pixel The angle of vector, the regulation angle of eyeglass is drawn,Normal line vector (N) equation corresponding to pixel：N=2*Xi+2*Yj-4*Fk,I in above formula, j and k represent orthogonal unit vectors, and F represents focal length in formula, then F (X, Y, Z)=X2+Y2- 4*F*Z, X, Y, Z table Show X-axis, Y-axis and the Z axis in coordinate system,Lens surface slope equation is then：Minute surface X slopes=- X/2/F, minute surface Y slopes=- Y/2/F；(3), the relation of the normal line vector according to corresponding to lens surface slope and pixel, utilizes least square fitting appearance Face angle degree tangent line, by the angle compared with desired lens angle, difference size is the regulated quantity of eyeglass.
- 2. butterfly tracking system eyeglass focus adjustment method according to claim 1, it is characterised in that：In the step (2), lead Spot light on tabula rasa is transmitted into camera by eyeglass, opens the spot light on light guide plate successively, can be recorded with camera The pixel value and reflected ray vector of reflection light, for calculating the normal line vector of each pixel.
- 3. butterfly tracking system eyeglass focus adjustment method according to claim 1, it is characterised in that：In the step (2), butterfly Formula eyeglass parabolic equation：4fZ=X2+Y2+A·X+B·Y+C·XYF is focal length in formula, and A, B are constant, C=0；The surface slope of parabolic equation in the X direction is：<mrow> <mfrac> <mrow> <mi>d</mi> <mi>Z</mi> </mrow> <mrow> <mi>d</mi> <mi>X</mi> </mrow> </mfrac> <mo>=</mo> <mfrac> <mi>X</mi> <mrow> <mn>2</mn> <mi>f</mi> </mrow> </mfrac> <mo>+</mo> <mi>A</mi> </mrow>According to parameter A, the regulated quantity of the eyeglass is calculated.
- 4. butterfly tracking system eyeglass focus adjustment method according to claim 3, it is characterised in that：Regulated quantity A is equal to tan (A1), wherein A1 is the offset A1 that system is initially set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610156475.9A CN105739057B (en) | 2016-03-18 | 2016-03-18 | Butterfly tracking system eyeglass focus adjustment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610156475.9A CN105739057B (en) | 2016-03-18 | 2016-03-18 | Butterfly tracking system eyeglass focus adjustment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105739057A CN105739057A (en) | 2016-07-06 |
| CN105739057B true CN105739057B (en) | 2018-04-10 |
Family
ID=56250867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610156475.9A Active CN105739057B (en) | 2016-03-18 | 2016-03-18 | Butterfly tracking system eyeglass focus adjustment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105739057B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903719B (en) * | 2021-01-21 | 2022-12-06 | 荣旗工业科技(苏州)股份有限公司 | CCD camera angle adjusting system and method for lens detection |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036235U (en) * | 1988-06-25 | 1989-04-19 | 邓恩家 | Lighting device using sunlight |
| CN101922999A (en) * | 2010-06-13 | 2010-12-22 | 东南大学 | Indoor light path test system |
| CN102183837A (en) * | 2011-04-21 | 2011-09-14 | 何秋蓉 | Secondary light concentration device and system as well as solar thermal power generation system provided with system |
| CN102192610A (en) * | 2011-04-21 | 2011-09-21 | 冯益安 | Focused 45-degree angle special-shaped heat preservation medium tank under parabolic reflector |
| CN103294071A (en) * | 2013-06-28 | 2013-09-11 | 李先强 | Pyramid solar automatic focusing system |
-
2016
- 2016-03-18 CN CN201610156475.9A patent/CN105739057B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036235U (en) * | 1988-06-25 | 1989-04-19 | 邓恩家 | Lighting device using sunlight |
| CN101922999A (en) * | 2010-06-13 | 2010-12-22 | 东南大学 | Indoor light path test system |
| CN102183837A (en) * | 2011-04-21 | 2011-09-14 | 何秋蓉 | Secondary light concentration device and system as well as solar thermal power generation system provided with system |
| CN102192610A (en) * | 2011-04-21 | 2011-09-21 | 冯益安 | Focused 45-degree angle special-shaped heat preservation medium tank under parabolic reflector |
| CN103294071A (en) * | 2013-06-28 | 2013-09-11 | 李先强 | Pyramid solar automatic focusing system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105739057A (en) | 2016-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ulmer et al. | Beam characterization and improvement with a flux mapping system for dish concentrators | |
| CN105973505B (en) | A kind of solar cavity type heat absorber opening heat flow density assay method | |
| CN105806253B (en) | A kind of detection method of settled date mirror surface-shaped | |
| Felsberger et al. | Optical performance and alignment characterization of a parabolic trough collector using a multi-junction CPV solar cell | |
| CN105485939B (en) | Measuring and calculating method for thermoelectric output performance of solar concentrating photovoltaic photothermal cogeneration system | |
| CN205450421U (en) | Dish formula tracker focusing anchor clamps and focusing system | |
| CN105739057B (en) | Butterfly tracking system eyeglass focus adjustment method | |
| Li et al. | Comparison-based optical assessment of hyperboloid and ellipsoid reflectors in a beam-down solar tower system with linear Fresnel heliostats | |
| CN110059592A (en) | A kind of mirror field cloud block detection method and device based on polyphaser | |
| Chen et al. | Experimental and comparison study on two solar dish systems with a high concentration ratio | |
| CN103743547B (en) | A kind of BCS plate characteristic identification method | |
| Paredes et al. | Combined heat and power generation with a HCPV system at 2000 suns | |
| CN107230231A (en) | The position calibration method of camera and target in condenser mirror quality testing | |
| CN106918313B (en) | A kind of dish-style Stirling Salar light-gatherings minute surface quality determining method | |
| CN109813754A (en) | A kind of System and method for of measurement and optimization heat dump cut-off efficiency | |
| CN103411754B (en) | Reflection concentration type photovoltaic optical condenser spot intensity distribution measurement method | |
| KR101893269B1 (en) | Photovoltaic thermal hybrid solar collector, solar energy conversion system and method | |
| CN104330885A (en) | Ultra-short focusing condensing photovoltaic condensing lens | |
| Bonsignore et al. | CHP efficiency of a 2000× CPV system with reflective optics | |
| CN201918932U (en) | Hybrid tracking policy type light-condensing photovoltaic generator | |
| JP2735154B2 (en) | Concentrating solar cell module | |
| Chea et al. | Performance evaluation of new two axes tracking pv-thermal concentrator | |
| Guo et al. | Moonlight concentration experiments of Badaling solar tower power plant in Beijing | |
| CN102130629A (en) | Uniform reflection focused solar generation device | |
| CN110006632A (en) | System and method for detecting surface shape quality of heliostat mirror of single camera |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |