CN109596212A - The detection system and detection method of heliostat light gathering efficiency - Google Patents
The detection system and detection method of heliostat light gathering efficiency Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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- G01M11/02—Testing optical properties
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Abstract
The present invention provides the detection systems and detection method of a kind of heliostat light gathering efficiency, comprising: heliostat control module, data processing module, image capture module, image processing module, wireless communication module and GPS positioning module；Wherein: image capture module, wireless communication module and GPS positioning module are installed on unmanned plane；Heliostat control module for determining heliostat to be detected, and generates settled date mirror angle rotation control instruction, rotates heliostat to be detected to predetermined angle；Data processing module determines the test point and heliostat angle-data of heliostat to be detected for the current location according to unmanned plane, and calculates the light gathering efficiency of tested heliostat；Image capture module, for acquiring the mirror image under different exposure values.To which under conditions of not influencing to absorb heat tower normal work, realization detects simultaneously in the more test points in the overhead Jing Chang, multiple heliostats, improves detection efficiency, keeps testing result more acurrate, is suitble to promote.
Description
Technical field
The present invention relates to solar energy thermal-power-generating technical fields, and in particular, to a kind of detection system of heliostat light gathering efficiency
System and detection method.
Background technique
Heliostat light gathering efficiency is a key factor for influencing solar power tower efficiency, therefore is designed in heliostat
Stage must be using the heliostat light gathering efficiency performance indicator important as one and the assembly in heliostat, debugging, verification and fortune
Battalion's stage carries out real-time tracking to this index to ensure the optical efficiency of entire Jing Chang.
In the prior art, detection is carried out to heliostat light gathering efficiency and mostly uses contactless vision-based detection scheme, utilized
Camera acquires the heliostat light spot image that optically focused is formed in target target, then obtains hot spot geometric form by image algorithm
Shape, and then calculate heliostat light gathering efficiency.
But this mode needs the specific position around heat dump to install hot spot target, and need to install certain camera
Light spot image is acquired, and in the detection of the heliostat light gathering efficiency of extensive Jing Chang, efficiency is lower, can not carry out same district
Domain, multi-panel heliostat detect simultaneously, and can affect the normal work in power station to the factors such as light pollution are caused around heat absorption tower.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of detection system of heliostat light gathering efficiency and
Detection method.
In a first aspect, the present invention provides a kind of detection system of heliostat light gathering efficiency, it is applied to tower photo-thermal power station mirror
In, comprising: heliostat control module, data processing module, image capture module, image processing module, wireless communication module
And GPS positioning module；Wherein: described image acquisition module, wireless communication module and GPS positioning module are installed in unmanned plane
On；
The heliostat control module, for heliostat to be detected determining in tower photo-thermal power station mirror field, and according to
The heliostat angle-data that the data processing module generates generates settled date mirror angle and rotates control instruction, makes described to be detected
Heliostat rotate to predetermined angle；
The data processing module determines the inspection of the heliostat to be detected for the current location according to unmanned plane
Measuring point and heliostat angle-data；According to the mirror surface optically focused strength distribution of the heliostat to be detected, tested heliostat is calculated
Light gathering efficiency；
Described image acquisition module, for acquiring mirror of the heliostat to be detected under different exposure values in test point
Face image, and the mirror image is sent to image processing module and carries out image procossing by the wireless communication module；
Described image processing module, the mirror image for acquiring to described image acquisition module are handled, and obtain institute
State the mirror surface optically focused strength distribution of heliostat to be detected.
The wireless communication module, for realizing unmanned plane and heliostat control module, data processing module, Image Acquisition
Module, image processing module, GPS positioning module data communication；
The GPS positioning module, for executing the positioning to unmanned plane, and the current flight posture of determining unmanned plane.
Optionally, the heliostat control module, is specifically used for:
Heliostat to be detected is determined in tower photo-thermal power station mirror field, by the coordinate position of the heliostat to be detected
It is sent to data processing module；
In the heliostat angle-data for receiving the data processing module generation, generates the rotation control of settled date mirror angle and refers to
It enables, rotates the heliostat to be detected to predetermined angle, and sent in place by the wireless communication module to unmanned plane
Signal.
Optionally, the unmanned plane, is specifically used for:
The positioning of unmanned plane is carried out according to GPS positioning module, and the unmanned plane current location is passed through into the channel radio
News module is sent to the data processing module；
After receiving the test point that the data processing module is sent, test point is arrived in flight；
After receiving the signal in place that the heliostat control module is sent, the acquisition of described image acquisition module it is described to
Mirror image of the heliostat of detection under different exposure values, and the mirror image is passed through into the wireless communication module, hair
Give image processing module.
Optionally, the data processing module, is specifically used for:
It is true according to preset rules after receiving the coordinate position of heliostat to be detected, the current location of unmanned plane
The test point and heliostat angle-data of the fixed heliostat to be detected, and data are sent respectively to unmanned plane and heliostat
Control module；
After receiving the mirror surface optically focused strength distribution of described image processing module, pass through mirror surface optically focused under different exposure values
Effect strength distribution, the Fitting Calculation are tested the light gathering efficiency value of heliostat.
Optionally, the preset rules, comprising:
Distance of the heliostat to be detected away from test point phase at a distance from the heat dump away from tower photo-thermal power station is set
Deng；
The current location of the unmanned plane is preset minimum value at a distance from test point；
For sunlight after the heliostat reflection to be detected, reflection light passes through the test point.
Optionally, the quantity of the unmanned plane is N；Wherein, N is the natural number greater than 0.
Optionally, if the quantity of the unmanned plane is greater than 1, the data processing module is also used to:
After the test point for obtaining heliostat to be detected, judge whether the test point is current with other unmanned planes
There are position conflicts for position；
Position conflicts if it exists, then test point and the settled date of the heliostat to be detected are redefined according to preset rules
Mirror angle data.
Second aspect, the present invention provide a kind of detection method of heliostat light gathering efficiency, appoint using in above-mentioned first aspect
The detection system of heliostat light gathering efficiency described in one executes the detection of heliostat light gathering efficiency.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, the present invention uses sunlight and makees relative to the system for using self-emitting light source to carry out the detection of heliostat light gathering efficiency
To detect light source, other light sources are not used, and test point does not focus on heat absorption tower, efficiently avoids light pollution to Jing Chang
The influence of routine work；
2, the present invention builds holder camera progress heliostat optically focused relative to traditional near the heat dump on tower that absorbs heat
The scheme of Efficiency testing passes through adjusting using the unmanned plane that can freely convert flight attitude instead of the holder of higher cost
Distance of the tested point away from heliostat is equidistant with heat dump to heliostat, so that testing result is utmostly close to heliostat
The light gathering efficiency value of real work, testing result are more acurrate.
3, the present invention can be equipped with more unmanned planes, and realization detects simultaneously in the more test points in the overhead Jing Chang, multiple heliostats, pole
The big heliostat detection efficiency for improving large area Jing Chang, detection process is convenient, is suitble to promote.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the schematic illustration of an application scenarios of the invention；
Fig. 2 is the structural schematic diagram of the detection system of heliostat light gathering efficiency provided in an embodiment of the present invention；
Fig. 3 is the flow chart of the detection method of heliostat light gathering efficiency provided in an embodiment of the present invention.
In figure, the heat absorption tower of the tower photo-thermal power station of 101-, 102- heat dump, 103- heliostat, 104- unmanned plane.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
Fig. 1 is the schematic illustration of an application scenarios of the invention, as shown in Figure 1,101 be the heat absorption of tower photo-thermal power station
Tower, 102 be the heat dump on heat absorption 101 top of tower, and 103 be heliostat, and 104 be unmanned plane.The working principle of tower photo-thermal power station
It is that sunlight concentration is reflected into heat absorption tower 101 by heliostat 103 in mirror field, is absorbed by the heat dump 102 at heat absorption tower top end, thus
It realizes purpose that solar energy collecting will be got up, then heating working medium and drives steam turbine generator that can generate electricity.Wherein, Jing Changzhong
Heliostat 103 under mirror station control system can the real-time tracking sun, sunlight is reflexed into specific direction, usually reflexes to tower
Heat dump 102 on the heat absorption tower 101 of formula photo-thermal power station.Heliostat light gathering efficiency is influence solar power tower efficiency one
A key factor, thus the heliostat design phase must using the heliostat light gathering efficiency performance indicator important as one and
Assembly, debugging, verification and the operation stage of heliostat are carried out real-time tracking to this index and are imitated with the optics for ensuring entire Jing Chang
Rate.
The present invention considers unmanned plane to heliostat in order to accurately detect the light gathering efficiency of every face heliostat in mirror field
Operating distance should be the heliostat to the distance between the heat dump of heat absorption tower d, therefore when calculating test point, it is ensured that test point
Distance apart from heliostat is d.Meanwhile the Image Acquisition for needing heliostat that can accurately be reflected into sunlight on unmanned plane
Module, therefore the incidence angle of light and the angle of emergence are equal, are α, and then can calculate heliostat according to the orientation of the current sun
Posture.When heliostat is rotated to the test pose, when unmanned plane is moved to test point, image capture module can carry out mirror
Face Image Acquisition.In order to realize the accurate acquisition of image, the GPS positioning module of detection system can provide current space coordinate and
Posture, according to heliostat position regulating system posture, so that the camera optical axis of image capture module is directed toward heliostat to be measured.Due to
Mirror surface directly reflects sunlight and because of its mirror surface surface structure, plays the effect of optically focused, therefore in acquired image, mirror surface
It reflects compared with bright part that the region spotlight effect is preferable in region, calculates the ratio of image clear zone area and mirror surface area, obtain
Optically focused parameter C under the exposure value is obtained under one group of default exposure value i by adjusting the exposure value of image capture module camera
Optically focused parameter Ci, by it than ideal value C ' that upper simulation algorithm obtainsi, this group of ratio mean value is finally taken, can be obtained to be determined
The light gathering efficiency of solar eyepiece:
Fig. 2 is the structural schematic diagram of the detection system of heliostat light gathering efficiency provided in an embodiment of the present invention, such as Fig. 2 institute
Show, heliostat control module, image capture module, image processing module, data processing module, wireless communication module and GPS are fixed
Position module, in which:
Image capture module by one have can the high-definition camera of multi-gear adjustment exposure value form, image processing module tool
Light spot profile identification spot area that is standby that acquired image is subjected to the functions such as noise-removed filtering, and being fitted in image, number
Have the function that the data fitting operation for obtaining the former generates heliostat light gathering efficiency numerical value according to processing module, is provided simultaneously with root
According to time, the mapping coordinate points of specific heliostat, coordinates of targets to be reflected point, the crank degree of heliostat to be measured is calculated, and
Heliostat posture is controlled and then being sent to mirror station control system, wireless communication module completes the communication function between module,
GPS positioning module completes the positioning and gesture recognition of unmanned plane, and then calculate moving line etc..
Heliostat control module can control heliostat posture by issuing crank degree.
Preferably, unmanned plane can be multiple.At this point, data processing module, is also used to: obtaining heliostat to be detected
Test point after, judge test point whether with the current location of other unmanned planes there are positions to conflict；Position conflicts if it exists,
The test point and heliostat angle-data of heliostat to be detected are then redefined according to preset rules.
Fig. 3 is the flow chart of the detection method of heliostat light gathering efficiency provided in an embodiment of the present invention, as shown in figure 3, adopting
With detection system as above, include the following steps:
1) start heliostat control module, select heliostat list to be detected, can need to be loaded into according to user to be detected
Heliostat list, detection system can optimizing detection sequence, successively carry out light gathering efficiency detection；
2) start unmanned plane, heliostat to be measured is obtained by wireless communication module；
3) unmanned plane carries out GPS self-test by GPS positioning system, obtains changing coordinates and flight attitude；
4) it according to the heliostat coordinate to be measured of acquisition, is calculated by data processing module and closes on test point and heliostat turn
Angle angle will test by wireless communication module and a little be sent to heliostat control module；When unmanned plane is multiple, data processing
Module be also used to judge test point whether with currently detect other unmanned planes test point conflict, if conflict if repeat the step
Suddenly, do not conflict, continue；
5) heliostat crank degree is sent to heliostat control module by wireless communication module, corner is issued by the latter
Angle, and then heliostat posture is adjusted, while unmanned plane flies to test point, sunlight is reflexed to Image Acquisition by heliostat at this time
In module；
6) unmanned plane acquires the heliostat minute surface image under different exposure values by image capture module；
7) unmanned plane obtains heliostat minute surface optically focused strength distribution by image processing module, processing acquired image；
8) the optically focused effect of tested heliostat is calculated according to heliostat minute surface optically focused strength distribution by data processing module
Rate completes detection, light gathering efficiency can also be carried out record storage.
It should be noted that the step in the detection method of heliostat light gathering efficiency provided by the invention, it is fixed to can use
Corresponding module, device, unit etc. are achieved in the detection system of solar eyepiece light gathering efficiency, and those skilled in the art are referred to
The step process of the technical solution implementation method of system, that is, the embodiment in system can be regarded as the preference of implementation method,
It will not go into details for this.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (8)
1. a kind of detection system of heliostat light gathering efficiency, which is characterized in that be applied in tower photo-thermal power station mirror field, comprising:
Heliostat control module, data processing module, image capture module, image processing module, wireless communication module and GPS positioning mould
Block；Wherein: described image acquisition module, wireless communication module and GPS positioning module are installed on unmanned plane；
The heliostat control module, for determining heliostat to be detected in tower photo-thermal power station mirror field, and according to described
The heliostat angle-data that data processing module generates generates settled date mirror angle and rotates control instruction, and it is described to be detected fixed to make
Solar eyepiece is rotated to predetermined angle；
The data processing module determines the test point of the heliostat to be detected for the current location according to unmanned plane
With heliostat angle-data；According to the mirror surface optically focused strength distribution of the heliostat to be detected, the poly- of tested heliostat is calculated
Light efficiency；
Described image acquisition module, for acquiring mirror surface figure of the heliostat to be detected under different exposure values in test point
Picture, and the mirror image is sent to image processing module and carries out image procossing by the wireless communication module；
Described image processing module, the mirror image for acquiring to described image acquisition module are handled, obtain it is described to
The mirror surface optically focused strength distribution of the heliostat of detection.
The wireless communication module, for realizing unmanned plane and heliostat control module, data processing module, Image Acquisition mould
Block, image processing module, GPS positioning module data communication；
The GPS positioning module, for executing the positioning to unmanned plane, and the current flight posture of determining unmanned plane.
2. the detection system of heliostat light gathering efficiency according to claim 1, which is characterized in that the heliostat controls mould
Block is specifically used for:
Heliostat to be detected is determined in tower photo-thermal power station mirror field, and the coordinate position of the heliostat to be detected is sent
To data processing module；
In the heliostat angle-data for receiving the data processing module generation, generates settled date mirror angle and rotates control instruction,
It rotates the heliostat to be detected to predetermined angle, and is believed in place by the wireless communication module to unmanned plane transmission
Number.
3. the detection system of heliostat light gathering efficiency according to claim 1, which is characterized in that the unmanned plane, specifically
For:
The positioning of unmanned plane is carried out according to GPS positioning module, and the unmanned plane current location is passed through into the wireless telecommunications mould
Block is sent to the data processing module；
After receiving the test point that the data processing module is sent, test point is arrived in flight；
After receiving the signal in place that the heliostat control module is sent, the acquisition of described image acquisition module is described to be detected
Mirror image of the heliostat under different exposure values, and the mirror image is sent to by the wireless communication module
Image processing module.
4. the detection system of heliostat light gathering efficiency according to claim 1, which is characterized in that the data processing mould
Block is specifically used for:
After receiving the coordinate position of heliostat to be detected, the current location of unmanned plane, institute is determined according to preset rules
The test point and heliostat angle-data of heliostat to be detected are stated, and data are sent respectively to unmanned plane and heliostat control
Module；
After receiving the mirror surface optically focused strength distribution of described image processing module, pass through mirror surface spotlight effect under different exposure values
Strength distribution, the Fitting Calculation are tested the light gathering efficiency value of heliostat.
5. the detection system of heliostat light gathering efficiency according to claim 4, which is characterized in that the preset rules, packet
It includes:
Being equidistant for distance of the heliostat to be detected away from test point and the heat dump away from tower photo-thermal power station is set；
The current location of the unmanned plane is preset minimum value at a distance from test point；
For sunlight after the heliostat reflection to be detected, reflection light passes through the test point.
6. the detection system of heliostat light gathering efficiency according to any one of claims 1-5, which is characterized in that the nothing
Man-machine quantity is N；Wherein, N is the natural number greater than 0.
7. the detection system of heliostat light gathering efficiency according to claim 6, which is characterized in that if the number of the unmanned plane
When amount is greater than 1, the data processing module is also used to:
After the test point for obtaining heliostat to be detected, judge the test point whether the current location with other unmanned planes
There are position conflicts；
Position conflicts if it exists, then the test point and settled date pitch-angle of the heliostat to be detected are redefined according to preset rules
Degree evidence.
8. a kind of detection method of heliostat light gathering efficiency, which is characterized in that application is of any of claims 1-7 fixed
The detection system of solar eyepiece light gathering efficiency executes the detection of heliostat light gathering efficiency.
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| CN112306103B (en) * | 2020-11-12 | 2024-07-19 | 首航慧通科技(北京)有限公司 | System and method for measuring and optimizing heliostat efficiency |
| DE102021125807A1 (en) | 2021-10-05 | 2023-04-06 | FH Aachen, Körperschaft des öffentlichen Rechts | Method of aligning a radiation-reflecting object |
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