Dynamic photovoltaic louvre system and method of controlling the same

Abstract

The application provides a dynamic photovoltaic louver system and a control method thereof, and the system comprises a first photovoltaic louver assembly, a second photovoltaic louver assembly, a sky image acquisition module, a control module and a driving module; the control module can calculate according to the acquired sky image, and select a louver angle according to user demand and the calculation result; and a motor makes the first photovoltaic louver assembly and the second photovoltaic louver assembly realize angle adjustment according to the instruction issued by the control module. The dynamic photovoltaic louver system and the control method thereof provided by the application realize the acquisition, processing and analysis calculation of the sky image, obtain the relationship between the louver angle, the power generation, the glare occurrence rate, the field of view rate and the illumination value, improve the calculation precision and the calculation efficiency; the louver is divided into two parts, the first photovoltaic louver assembly and the second photovoltaic louver assembly realize independent control, respectively meet the lighting demand and the power generation demand, and improve the automation and the intelligent degree of the dynamic photovoltaic louver system.

Description

Technical Field

[0001] This invention relates to the fields of building energy conservation, building lighting technology and renewable energy utilization, and particularly to dynamic photovoltaic louver systems and their control methods. Background Technology

[0002] Solar energy, as a renewable resource, can significantly reduce building energy consumption when used rationally. During hot seasons, excessive sunlight penetration can lead to a substantial increase in building cooling load, and conversely, may result in excessive lighting load. While shading systems provide a way to regulate sunlight entry, the efficiency of sunlight utilization largely depends on occupant behavior. Once glare interference occurs due to sunlight penetration, occupants typically choose to turn off the shading devices, and even after the interference disappears, they are often reluctant to turn the shading system back on, which significantly affects indoor lighting.

[0003] Currently, common adjustable louver systems typically rely on horizontal or vertical illuminance measurement points indoors. These points collect relevant information at fixed locations to adjust the louvers. This control method has the following problems:

[0004] First, fixed indoor measurement points cannot effectively adjust the louver angle; second, the arrangement of measurement points will affect the use of the room; third, existing shading systems usually consist of multiple devices that need to be interconnected, making installation complex; and finally, using cameras to collect data in the interior environment of a building may raise privacy concerns.

[0005] Furthermore, integrating photovoltaic materials into louver systems can effectively shield excessive direct sunlight, reduce indoor glare, and optimize the indoor lighting environment, while also reducing net energy consumption and improving indoor thermal comfort. Simultaneously, as a renewable energy technology, photovoltaic louver systems can generate clean electricity and reduce carbon emissions. However, the application of existing photovoltaic systems still faces challenges. For example, most existing photovoltaic systems are rooftop BAPV systems, and in urban high-rise buildings, installation space is limited, and they cannot adaptively adjust to the sun's altitude angle. While louvered shading systems can improve visual comfort, they are mostly designed with a fixed angle, affecting visibility and failing to integrate with photovoltaic systems, thus failing to meet energy conservation and emission reduction requirements. Summary of the Invention

[0006] To address the aforementioned problems, this invention proposes a dynamic photovoltaic louver system and its control method, which can solve one or more of the above-mentioned technical problems.

[0007] According to one aspect of the present invention, a dynamic photovoltaic louver system is provided, comprising:

[0008] The system comprises a first photovoltaic louver module, a second photovoltaic louver module, a sky image acquisition module, a control module, and a drive module.

[0009] The first photovoltaic louver module includes several louvers. The first photovoltaic louver module is connected to the drive module. The louvers in the first photovoltaic louver module can be adjusted in angle under the action of the drive module to meet the needs of light collection or power generation.

[0010] The second photovoltaic louver module includes several louvers. The second photovoltaic louver module is connected to the drive module. The louvers in the second photovoltaic louver module can be adjusted in angle under the action of the drive module to meet the power generation demand.

[0011] The sky image acquisition module can acquire sky images, and the sky image acquisition module is electrically connected to the control module.

[0012] The control module can calculate the illuminance, power generation, glare rate, and field of view of the indoor working plane corresponding to each louver angle in the preset louver angle scheme based on the collected sky image. According to the user's needs and calculation results, the control module selects the louver angle and sends the command to the drive module. The drive module adjusts the angle of the first photovoltaic louver component and the second photovoltaic louver component according to the command sent by the control module.

[0013] According to another aspect of the present invention, a control method for a dynamic photovoltaic louver system is provided, which applies any of the above-described dynamic photovoltaic louver systems, comprising:

[0014] Adjust the angle of each louver in the second photovoltaic louver module to the angle of maximum power generation.

[0015] Determine if there are any people currently inside the room.

[0016] If not, adjust the angle of each louver in the first photovoltaic louver module to the angle of maximum power generation.

[0017] If it exists, then determine whether it is currently working hours.

[0018] If it is not during working hours, adjust the angle of each louver in the first photovoltaic louver module to the angle of maximum power generation.

[0019] During working hours, the angle of each louver in the first photovoltaic louver module is adjusted according to user needs or current indoor illuminance conditions.

[0020] The beneficial effects of this invention are as follows: By acquiring, processing, and analyzing sky images, the relationship between louver angle and power generation, glare rate, field of view, and illuminance value is obtained; the louvers are divided into two parts: the first photovoltaic louver component in the upper window can adjust the louver angle in real time according to user needs and current indoor illuminance conditions, while the second photovoltaic louver component in the lower window adjusts the louver angle in real time according to the power generation calculation results, so as to maximize power generation within a preset time step; the first and second photovoltaic louver components can be controlled independently to meet user / lighting needs and power generation needs respectively, so that the dynamic photovoltaic louver system can be adjusted according to the current actual lighting environment and indoor usage conditions, thereby improving the automation and intelligence of the dynamic photovoltaic louver system.

[0021] In addition, unless otherwise specified, all aspects of the technical solution of this invention can be implemented by conventional means in the art. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the dynamic photovoltaic louver system provided in an embodiment of the present invention.

[0024] Figure 2 This is a structural block diagram of a dynamic photovoltaic louver system provided in an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the sky image acquisition module in the dynamic photovoltaic louver system provided in an embodiment of the present invention.

[0026] Figure 4 A flowchart of a control method for a dynamic photovoltaic louver system provided in an embodiment of the present invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only some, not all, of the embodiments of this invention, and are used merely to explain the invention and are not intended to limit the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0028] It should be noted that the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0029] Example 1:

[0030] Reference manual attached Figure 1-3 This illustration shows a dynamic photovoltaic louver system provided in one embodiment of the present invention, comprising:

[0031] The system comprises a first photovoltaic louver module 1, a second photovoltaic louver module 2, a sky image acquisition module 3, a control module 4, and a drive module 5.

[0032] The first photovoltaic louver module 1 and the second photovoltaic louver module 2 each include a number of louvers. The louvers in the first photovoltaic louver module 1 and the second photovoltaic louver module 2 can be louvers of the same specification, and the number of louvers in the first photovoltaic louver module 1 and the second photovoltaic louver module 2 can be the same or different.

[0033] Specifically, the vertical distance between each louver of the first photovoltaic louver assembly 1 and the ground is greater than the vertical distance between each louver of the second photovoltaic louver assembly 2 and the ground; that is, the distance between the first photovoltaic louver assembly 1 and the ground is greater than the distance between the second photovoltaic louver assembly 2 and the ground. The first photovoltaic louver assembly 1 is located above the window relative to the second photovoltaic louver assembly 2, and the second photovoltaic louver assembly 2 is located below the window relative to the first photovoltaic louver assembly 1. Therefore, since the lower part of the window has a limited impact on the indoor light environment and view, the second photovoltaic louver assembly 2 located at the lower window can be used entirely to meet the photovoltaic power generation needs. The first photovoltaic louver assembly 1 located at the upper window can meet the indoor lighting needs by adjusting the louver angle. When the room is empty or occupied but not during working hours, the first photovoltaic louver assembly 1 can also be used to meet the photovoltaic power generation needs.

[0034] The sky image acquisition module 3 can be installed outside the window to acquire sky images. The sky image acquisition module 3 is connected to the control module 4 via communication or electrical connection. The sky image acquisition module 3 can send the acquired sky images to the control module 4.

[0035] The sky image acquisition module 3 can be installed on the windowsill or window frame. The lens of the sky image acquisition module 3 faces outwards from the window, and the lens orientation should be perpendicular to the plane of the outer window, that is, the lens orientation is parallel to the normal direction of the outer window.

[0036] The control module 4 is electrically connected to the drive module 5. The control module 4 can calculate the illuminance, power generation, glare rate and field of view of the indoor working plane corresponding to each louver angle in the preset louver angle scheme based on the collected sky image. According to the user's needs and calculation results, the control module 4 selects the louver angle and sends the command to the drive module 5. The drive module 5 adjusts the angle of the first photovoltaic louver component 1 and the second photovoltaic louver component 2 according to the command sent by the control module 4.

[0037] The drive module 5 may include a first motor and a second motor, wherein the first motor and the second motor are electrically connected to the control module 4 respectively. The first motor is used to drive each louver in the first photovoltaic louver assembly 1 to adjust its angle, and the second motor is used to drive each louver in the second photovoltaic louver assembly 2 to adjust its angle.

[0038] Therefore, the louvers are divided into two parts. The first photovoltaic louver assembly 1 in the upper window section can adjust the louver angle in real time to meet user needs or lighting requirements. The second photovoltaic louver assembly 2 in the lower window section can adjust the louver angle in real time to maximize the power generation of the louvers. The first photovoltaic louver assembly 1 and the second photovoltaic louver assembly 2 can be independently controlled, allowing the dynamic photovoltaic louver system to adjust according to the current actual lighting environment and indoor usage, thereby improving the automation and intelligence of the dynamic photovoltaic louver system.

[0039] In an optional embodiment, the louvers in the first photovoltaic louver module 1 and the second photovoltaic louver module 2 can be composed of two transparent glass panels and a set of solar cells, with the solar cells positioned between the two transparent glass panels. The transparent glass panels ensure the rigidity and wind resistance of the louvers under various conditions, facilitate heat dissipation, and aid in the collection of solar radiation. The solar cells can be made of monocrystalline silicon, which has high efficiency, ensuring maximum theoretical utilization of solar energy for power generation and increasing power output. Thus, the solar cells effectively prevent direct sunlight from passing through the glass panels and causing glare for occupants indoors, while simultaneously generating photovoltaic power.

[0040] Reference manual attached Figure 3 The diagram shows the structure of the sky image acquisition module 3, which may include a control motherboard 6, a protective shell 7, an image sensor and fisheye lens 8, a neutral density filter 9, a cooling fan 10, a movable storage unit 11, and an illuminance sensor 12.

[0041] The sky image acquisition module 3 utilizes an image sensor and a fisheye lens 8. The image sensor can process 12.3-megapixel images, and the fisheye lens, connected to the sensor, has at least 3 megapixels. The operating temperature range of the image sensor and fisheye lens 8 can be designed to be -30 to 70°C, and can be extended to withstand storage environments from -40 to 100°C. The focal length of the image sensor and fisheye lens 8 can be set from 1 to 4mm, and the lens field of view is at least 160°. Therefore, the focal length and field of view of the image sensor and fisheye lens 8 can completely cover the main areas of the sky dome and the surrounding landscape, while controlling optical distortion to within 5%, significantly reducing costs while ensuring image quality.

[0042] The neutral density filter 9 can be set on the image sensor and the fisheye lens 8. The neutral density filter 9 can effectively avoid overexposure of sunlight when shooting in outdoor environments, and quantitatively reduce the light intensity received by the image sensor and the fisheye lens 8, thereby ensuring that the brightness distribution of the HDR image is uniform during subsequent HDR image synthesis, which is convenient for brightness calibration.

[0043] The control motherboard 6 can be considered as a component that carries some of the functions of the control module 4. In the sky image acquisition module 3, if the control motherboard 6 is integrated, the control motherboard 6 is electrically connected to the image sensor, the fisheye lens 8, and the control module 4. The control motherboard 6 acquires the acquired sky image, processes and calculates the sky image, and sends the calculated result to the control module 4. The control module 4 outputs the louver angle that meets the conditions based on the calculation result of the control motherboard 6 and the user's requirements.

[0044] If the control motherboard 6 is not integrated into the sky image acquisition module 3, then the sky image acquisition module 3 only has the function of sky image acquisition. The sky image acquisition module 3 does not process the sky image or perform subsequent calculations. The sky image acquisition module 3 is electrically connected to the control module 4 and sends the acquired sky image to the control module 4.

[0045] The protective casing 7 is used to protect the control motherboard 6, and the cooling fan 10 is used to dissipate heat from the control motherboard 6. The cooling fan 10 can be installed on the protective casing 7. The movable storage unit 11 is used to store sky images. When the control motherboard 6 is integrated into the sky image acquisition module 3, the movable storage unit 11 can also be used to store calculation data. The movable storage unit 11 can be installed inside the protective casing 7.

[0046] Illuminance sensor 12 can be arranged side-by-side with image sensor and fisheye lens 8 to measure vertical illuminance. The vertical illuminance measured by illuminance sensor 12 is used to calibrate the solar brightness of the synthesized HDR image during sky image processing.

[0047] The sky image acquisition module 3 may also include an opaque shielding layer located between the image sensor and fisheye lens 8 and the sun, protecting them from direct sunlight. In optional embodiments, the opaque shielding layer can be controlled using a micro-motor or stepper motor. The opaque shielding layer opens when the image sensor and fisheye lens 8 are capturing images and closes after they have finished capturing. This prevents the image sensor and fisheye lens 8 from overheating due to prolonged exposure to direct sunlight, thus extending the lifespan of the sky image acquisition module 3.

[0048] The control motherboard 6 can be a Raspberry Pi motherboard, which provides high-level onboard computing at a low cost. Raspberry Pi motherboards are portable, can be integrated into various devices, have low power consumption, and are suitable for long-term operation.

[0049] Control module 4 can calculate the power generation corresponding to all louver angles in the preset louver angle scheme based on the acquired sky image, and select the angle α corresponding to the maximum power generation value. max The control module sends a command to the drive module 5, and the second motor in the drive module 5 controls the rotation of each louver in the second photovoltaic louver assembly, so that the angle of each louver in the second photovoltaic louver assembly is the angle α of maximum power generation. max .

[0050] The preset louver angle scheme can be selected in increments of 5° within the range of [0, 90°]. With a 5° increment, there are 19 possible louver angle schemes, with angles of 0°, 5°, 10°...85° and 90°. The increment can be set according to the actual application scenario and the computing power of control module 4. When the louver angle is 0°, the louvers are horizontal, perpendicular to the window glass, and can be considered fully open. When the louver angle is 90°, the louvers are vertical, parallel to the window glass, and can be considered fully closed.

[0051] Control module 4 can also calculate the illuminance of the indoor working plane corresponding to all louver angles in the preset louver angle scheme. The preset louver angle scheme can be compared with the confirmed maximum power generation angle α. max The preset louver angle scheme is the same.

[0052] When there are no people indoors, or even if there are people indoors but it is not during working hours, the first photovoltaic louver module 1 can be adjusted to the maximum power generation angle α under the drive of the drive module 5. max To meet the demand for power generation.

[0053] When there are people indoors during working hours, the first photovoltaic louver module 1 needs to consider the lighting requirements. Therefore, the control module 4 calculates the illuminance of the indoor working plane corresponding to all louver angles in the preset louver angle scheme based on the collected sky image.

[0054] When the indoor working plane illuminance corresponding to all louver angles does not meet the preset illuminance conditions, the control module 4 adjusts all louver angles in the first photovoltaic louver module 1 to 0° through the drive module 5, that is, the louvers are fully opened to obtain the maximum outdoor sunlight.

[0055] When a louver angle exists, and the corresponding indoor working plane illuminance meets the preset illuminance conditions, the control module will filter out the louver angles corresponding to the indoor working plane illuminance that meet the preset illuminance conditions, and calculate the power generation, glare occurrence rate, and field of view rate corresponding to these louver angles.

[0056] Based on the user-selected louver working mode, the control module selects an angle α that matches the louver working mode, and sends a command to the drive module. The drive module controls the rotation of each louver in the first photovoltaic louver assembly 1, so that the angle of each louver in the first photovoltaic louver assembly is adjusted to α.

[0057] The height ratio of the first photovoltaic louver module 1 and the second photovoltaic louver module 2 can be adjusted according to the actual situation. Specifically, taking a 3m high south-facing all-glass curtain wall office room as an example, the people inside are usually sitting and working. At this time, the line of sight of people is usually 1.2m. If this height is taken as the lowest point of the first photovoltaic louver module 1, then the height of the second photovoltaic louver module 2 is 0~1.2m, that is, the ratio of the first photovoltaic louver module 1 to the second photovoltaic louver module 2 is 1.8:1.2.

[0058] The beneficial effects of this invention are as follows: by acquiring, processing, and analyzing sky images, the relationship between louver angle and power generation, glare rate, field of view, and illuminance value is obtained; the louver is divided into two parts, the first photovoltaic louver component 1 in the upper window can adjust the louver angle in real time according to the control module 4, and the second photovoltaic louver component 2 in the lower window adjusts the louver angle in real time according to the power generation calculation results, so that the power generation is maximized within a preset time step. The first photovoltaic louver component 1 and the second photovoltaic louver component 2 can be controlled independently to meet the user / lighting needs and power generation needs respectively, so that the dynamic photovoltaic louver system can be adjusted according to the current actual lighting environment and indoor usage, thereby improving the automation and intelligence of the dynamic photovoltaic louver system.

[0059] Example 2:

[0060] Reference manual attached Figure 4The present invention also provides a control method for a dynamic photovoltaic louver system according to an embodiment of the invention. The method, which applies any of the dynamic photovoltaic louver systems provided in the above embodiments, includes the following steps:

[0061] S111: Adjust the angle of each louver in the second photovoltaic louver module to the angle of maximum power generation;

[0062] S112: Determine if there are any people in the room. If not, proceed to S113; if so, proceed to S114.

[0063] S113: The angle of each louver in the first photovoltaic louver module is adjusted to the angle of maximum power generation;

[0064] S114: Determine if it is currently working time. If it is not working time, execute S113; if it is working time, execute S115.

[0065] S115: Adjust the angle of each louver in the first photovoltaic louver module according to user needs or current indoor illuminance conditions.

[0066] In an optional embodiment, the method for calculating the maximum power generation angle in S111 and S113 includes:

[0067] The sky image acquisition module acquires sky images;

[0068] Based on the collected sky images, the power generation corresponding to each louver angle in all preset louver angle schemes is calculated.

[0069] The louver angle corresponding to the maximum power generation among all louver angles is the angle with the maximum power generation.

[0070] S111 and S112 are not in any chronological order.

[0071] In an optional embodiment, S115, adjusting the angle of each louver in the first photovoltaic louver module according to user needs or current indoor illuminance conditions includes:

[0072] The sky image acquisition module acquires sky images;

[0073] Based on the collected sky images, the illuminance of the indoor working plane corresponding to each louver angle in all preset louver angle schemes is calculated.

[0074] Determine whether the calculated indoor working plane illuminance meets the preset illuminance conditions.

[0075] If the illuminance of the indoor working plane corresponding to all louver angles does not meet the preset illuminance conditions, then control the louver angle of each louver in the first photovoltaic louver module to be adjusted to 0°, that is, the louvers are horizontal.

[0076] If the illuminance of the indoor working plane corresponding to a certain louver angle meets the preset illuminance conditions, then select the louver angle scheme that meets the preset illuminance conditions.

[0077] Calculate the glare rate, field of view, and power generation for each louver angle in the louver angle scheme that meets the preset illuminance conditions.

[0078] Based on the user-selected louver operating mode, select an angle that matches the preset louver angle scheme that meets the louver operating mode, and adjust the angle of each louver in the first photovoltaic louver module according to the selected angle.

[0079] In an optional embodiment, determining whether the calculated indoor working plane illuminance meets the preset illuminance conditions includes:

[0080] Determine whether the proportion of the indoor floor area with an illuminance value calculated based on the current louver angle that is greater than a preset illuminance value is greater than a preset proportion value.

[0081] If so, then the current louver angle meets the preset illuminance conditions;

[0082] If not, then the current louver angle does not meet the preset illuminance conditions.

[0083] In optional embodiments, the louver operating mode selected by the user may include the optimal power generation mode, the optimal glare mode, the optimal field of vision mode, and the optimal overall mode.

[0084] When the user selects the optimal power generation mode, the control module controls the drive module to rotate each louver in the first photovoltaic louver module, so that the power generation corresponding to the louver angle is maximized.

[0085] When the user selects the optimal glare mode, the control module controls the drive module to rotate each louver in the first photovoltaic louver assembly, so that the glare occurrence rate corresponding to the louver angle is minimized.

[0086] When the user selects the optimal viewing mode, the control module controls the drive module to rotate each louver in the first photovoltaic louver assembly, maximizing the viewing angle corresponding to the louver angle.

[0087] When the user selects the optimal working mode for the louvers, the ideal values ​​of three indicators—power generation, visibility, and glare rate—are calculated using the TOPSIS model, and the angle of each louver in the first photovoltaic louver module is adjusted based on the obtained ideal values.

[0088] Specifically, when there are no people indoors, or when people are indoors but not during working hours, the angles of each louver in the first and second photovoltaic louver modules are set to the maximum power generation mode angle. The maximum power generation mode angle can be calculated and adjusted in real time based on the collected sky images.

[0089] The method for calculating power generation based on sky images collected from the sky may include the following steps:

[0090] Acquire sky images and synthesize HDR images;

[0091] Analyze sky radiation information based on HDR images;

[0092] Establish a real-time sky model based on sky radiation information;

[0093] Calculate the incident radiation on the photovoltaic panel, which includes direct solar radiation, sky diffuse radiation, and ground reflected radiation;

[0094] The power generation of photovoltaic panels is calculated based on the incident radiation, which includes direct solar radiation, sky diffuse radiation, and ground reflected radiation.

[0095] The process of acquiring sky images and synthesizing HDR images may include the following steps:

[0096] The sky image acquisition module continuously acquires several LDR images according to a pre-set exposure sequence;

[0097] Several acquired LDR images are combined into a single HDR image;

[0098] Determine whether the synthesized HDR image needs brightness calibration; if so, perform brightness calibration on the HDR image.

[0099] In an optional embodiment, when combining several acquired LDR images into a single HDR image, an image synthesis algorithm, such as an HDR imaging algorithm, can be used to generate the single HDR image. The synthesized HDR image can then undergo image range cropping, overall image brightness calibration, and image vignetting calibration. It can identify obstructed areas such as buildings, vegetation, and shading components based on the HDR image, avoiding the need for additional outdoor environment object modeling in lighting calculations and saving significant computational costs.

[0100] In an optional embodiment, determining whether the synthesized HDR image needs solar brightness calibration, and if so, performing solar brightness calibration on the HDR image may include the following steps:

[0101] A lux meter is placed in front of the camera lens or fisheye lens of the sky image module. The lux meter is used to collect the vertical illuminance value in front of the camera lens. ,

[0102] Extract the luminance value of each pixel from the synthesized HDR image. And calculate the vertical illuminance value of the HDR image. The calculation formula is shown in formula (1):

[0103]

[0104] In the formula, This represents the vertical illuminance value of an HDR image, measured in lx. This represents the brightness value of the i-th pixel, where i is a natural number and the unit is cd / m². 2 , This represents the angle of incidence of the i-th pixel. Represents the solid angle of the i-th pixel;

[0105] like If so, the synthesized HDR image is determined to require no brightness calibration;

[0106] like This indicates that there is a possibility of saturation or overflow in the bright areas of the sun in the HDR image. Therefore, it is determined that the synthesized HDR image needs sun brightness calibration to compensate for the energy loss in the bright areas of the HDR image.

[0107] Brightness calibration for HDR images includes:

[0108] Based on the measured vertical illuminance value And the required brightness value of the pixel is calculated using formula (1). Soon Substituting into the left side of formula (1), the calculated brightness value is denoted as: ,

[0109] Based on the calculated brightness value of the pixel Adjust the HRD image to complete the brightness calibration of the HDR image. The adjusted image should meet the requirements of formula (2):

[0110]

[0111] In the formula, This represents the vertical illuminance value of the HRD image after brightness calibration. The measured vertical illuminance value is used to calculate the visible light irradiance value corresponding to the HDR image using equation (3). :

[0112]

[0113] In the formula, The unit is W / m 2a and b are the fitting parameters of the total radiation in the visible light band and the vertical illuminance calculated from the HDR image. a and b can be obtained through measurement.

[0114] Therefore, without introducing additional HDR images, physical calibration of HDR images is achieved through post-image synthesis processing, thereby establishing a mapping relationship between pixel brightness values ​​and visible light irradiance.

[0115] In an optional embodiment, analyzing sky radiation information based on HDR images may include the following steps:

[0116] Output the total radiation in the visible light band of the HRD image. Converted to total radiation across the entire wavelength band ;

[0117] The total radiation across the entire spectrum is decomposed into direct radiation and diffuse radiation.

[0118] Specifically, HDR images can output total radiation in the visible light band. The total radiation in the visible light band can be extended to the full-band radiation range of 300nm to 2700nm using a visible light-full-band extension model. The visible light-full-band extension model can use a spectral fitting function or an empirical conversion factor.

[0119] Total radiation in the visible light band Total radiation across the entire band The conversion formula is as follows:

[0120]

[0121] In the formula, The unit is W / m 2 c and d are the fitting parameters of the total radiation of the entire band and the total radiation of the visible light band calculated from the HDR image. c and d can be obtained by measurement.

[0122] In an optional embodiment, decomposing the total radiation across the entire band into direct radiation and scattered radiation may include the following steps:

[0123] Extract the sun from the HDR image to obtain the sun's vertical illuminance value;

[0124] Obtain the vertical illuminance value of the HDR image in front of the sun;

[0125] The ratio of the sun's vertical illuminance contribution to the vertical illuminance contribution of an HDR image is equal to the ratio of direct radiation to total radiation across the entire wavelength range.

[0126] Direct radiation was calculated based on the total radiation across the entire wavelength band, the solar vertical illuminance contribution, and the vertical illuminance contribution from the HDR image.

[0127] The scattered radiation is calculated based on the total radiation and direct radiation across the entire wavelength band.

[0128] The formulas involved are as follows:

[0129]

[0130] in, Indicates the total radiation across the entire frequency band. Indicates direct radiation. Indicates scattered radiation. This represents the vertical illuminance value of the sun. This represents the vertical illuminance value of the HDR image after brightness calibration. It represents the solar zenith angle, with the unit being °, and its value is complementary to the solar altitude angle.

[0131] Establishing a real-time sky model based on sky radiation information can specifically include constructing a real-time sky model based on the sky brightness distribution in HDR images, mapping HDR image data into several sky segments, and the number of sky segments can be 145, 580, 1305, 2320, 3625 or 5220. The real-time sky model can calculate the scattered radiation of each sky segment.

[0132] In an optional embodiment, the real-time sky model can be the Perez sky model.

[0133] Specifically, the Radiance software can be used to calculate the scattered radiation of sky segments.

[0134] In an optional embodiment, calculating the incident radiation on the photovoltaic panel includes the following steps:

[0135] Calculate the direct solar radiation hitting the surface of the photovoltaic panel based on the direct radiation, the area of ​​the photovoltaic panel, and the projected area of ​​the sun on the photovoltaic panel of the obstruction.

[0136] Based on the real-time sky model, the sky-scattered radiation of each sky segment to the photovoltaic panel is calculated separately. The calculation results of all sky segments are added together to obtain the sky-scattered radiation incident on the photovoltaic panel.

[0137] The ground is considered as a radiation source. The ground is divided into several ground segments. The ground reflected radiation of each ground segment to the photovoltaic panel is calculated separately. The calculation results of all ground segments are added together to obtain the ground reflected radiation incident on the photovoltaic panel.

[0138] Since the incident radiation on a photovoltaic panel consists of three parts—direct solar radiation, sky diffuse radiation, and ground reflected radiation—the impact of obstructions on the incident radiation on the photovoltaic panel needs to be considered during calculations.

[0139] The calculation method for direct solar radiation hitting the surface of a photovoltaic panel is shown in formula (7):

[0140]

[0141] In the formula, This represents the angle between the solar direction vector and the normal vector of the photovoltaic panel surface. This represents direct radiation, and S represents the area of ​​the photovoltaic panel, with the unit being m². 2 , The solar projection area of ​​the obstruction onto the photovoltaic panel is expressed in square meters (m²). 2 .

[0142] According to the real-time sky model, the sky hemisphere is discretized into n sky segments according to the Reinhart distribution. The sky scattering radiation of each sky segment to the photovoltaic panel is calculated. The calculation formula is shown in formula (8). The sky scattering radiation of each sky segment is calculated and summed according to formula (9) to obtain the sky scattering radiation incident on the photovoltaic panel.

[0143]

[0144] In the formula, This represents the angle between the sky segment vector and the normal vector of the photovoltaic panel surface for each day. This represents the solid angle of the k-th sky segment. This represents the amount of scattered radiation in the k-th sky patch. Let be the projected area of ​​the photovoltaic panel on the k-th sky segment after passing through the obstruction. Let S represent the sky diffuse radiation of the k-th sky segment, and S represent the area of ​​the photovoltaic panel. This represents the sky-scattered radiation incident on the photovoltaic panel.

[0145] Therefore, the projected area of ​​each sky segment onto the photovoltaic panel after passing through the obstruction is taken as the obstruction area, thereby realizing the calculation of sky diffuse radiation.

[0146] When calculating ground-reflected radiation, the ground is considered as the radiation source, and the solar modeling tool radiancegendaylit can be used for calculation. The ground is divided into several ground segments according to the Reinhart distribution. Since ground-reflected radiation can also be regarded as scattering, the calculation method of sky-scattered radiation can be referred to, and the ground is divided into m ground segments, where m can be 145, 580, 1305, 2320, 3625, or 5220. Solar radiation reflected from the ground may also be blocked by obstacles, so the calculation formulas for ground-reflected radiation incident on photovoltaic panels are shown in formulas (10) and (11).

[0147]

[0148]

[0149] In the formula, This represents the angle between each ground segment vector and the normal vector of the photovoltaic panel surface. This represents the solid angle of the e-th ground segment. Let represent the amount of scattered radiation in the e-th ground patch. The ground is considered a uniform radiation source, and the gendaylit tool of Radiance is used to calculate the scattered radiation in each patch. To account for ground reflection radiation in different directions, the ground is modeled as a hemisphere and divided into m patches. Let be the projected area of ​​the photovoltaic panel on the e-th ground segment after passing through the obstruction. This represents the ground-reflected radiation of the e-th ground segment, where S represents the area of ​​the photovoltaic panel. This represents the sky-scattered radiation incident on the photovoltaic panel.

[0150] The method for calculating the projected area of ​​the sun, sky segments, or ground segments onto the photovoltaic panel after being obstructed by an obstacle may include the following steps:

[0151] Suppose there exists a shading plane S and an illuminated photovoltaic panel plane F, and that the direct sunlight shines from a specific direction with direction vector r. s (ray x ray y ray z The direction vectors of the sky and ground segments are determined by the solar altitude angle and azimuth angle, and are ray ( x_patch ray y_patch ray z_patch The vertex parametric equations of the occluding plane are (S) x S y S z The vertex parametric equations of the shading plane S represent the x, y, and z coordinates of each vertex of the shading plane S. A point (x0, y0, z0) is taken on the illuminated photovoltaic panel plane to define its normal N(n). x n y n z In this invention, the louver is the photovoltaic panel plane that is being illuminated, and the position information of the photovoltaic panel plane F includes the angle information of the photovoltaic panel plane F, that is, the louver angle.

[0152] Wherein, the direction vector r of direct sunlight s (ray x ray y ray z The calculation formula for ) is as follows:

[0153]

[0154] In the formula, The solar altitude angle, This is the solar azimuth angle.

[0155] The direction vectors of the sky and ground segments (ray) x_patch ray y_patch ray z_patch The calculation formula for ) is as follows:

[0156]

[0157] In the formula, the zenith angle range of the spherical cap sector corresponding to the sky segment or ground segment is: The azimuth range of the spherical cap sector corresponding to the sky segment or ground segment is: The zenith angle and azimuth angle ranges of the spherical cap sector can be obtained directly from the Reinhar model in the Radiance software, and are generally related to the total number of sky or ground segments (145, 580, 1305, 2320, 3625 or 5220).

[0158] The solar azimuth and solar altitude angles can be calculated using true solar time, using the following formulas:

[0159]

[0160] In the formula, TST represents true solar time, the standard time is the local time, such as Beijing time UTC+8, the longitude is corrected to 4×(local longitude - central longitude of the time zone), and EOT represents the time difference, in minutes.

[0161] EOT (Early Time Over Time) is calculated using an approximate formula, as follows:

[0162]

[0163] In the formula: EOT represents the time difference in minutes, B is 360° / 365(A-81), and A represents the Ath day of the year, with the value of A ranging from 1 to 365.

[0164] The solar hour angle H represents the angular position of the sun on the equator, with 0° at noon, positive in the morning, and negative in the afternoon. The formula for calculating the solar hour angle H is:

[0165]

[0166] In the formula, H is the solar hour angle, and the unit is °.

[0167] The expressions for the solar altitude angle and solar azimuth angle are as follows:

[0168]

[0169]

[0170] In the formula, η is the solar altitude angle, η is the local latitude, and δ is the solar declination. The values ​​represent the solar azimuth angle, all in degrees.

[0171] Methods for calculating the projected area of ​​a radiation source on a photovoltaic panel due to an obstruction include:

[0172] The projection scale factor t is calculated as follows when the radiation source is the sun:

[0173]

[0174] When the radiation source is a patch of sky or a patch of ground, the ray in formula (26) will be... x ray y and ray z Replace each with ray x_patch ray y_patch and ray z_patch .

[0175] Calculate the projection points of all vertices of the shading object onto the surface of the photovoltaic panel to obtain the projection polygon P′ of the shading object on the photovoltaic panel plane. When the radiation source is the sun, the calculation formula for the coordinates Y of the projection points of the vertices of the shading object onto the photovoltaic panel is shown in formula (27):

[0176]

[0177] When the radiation source is a patch of sky or a patch of ground, the ray in formula (27) will be... x ray y and ray z Replace each with ray x_patch ray y_patch and ray z_patch .

[0178] The intersection Sd of the projected polygon P′ and the photovoltaic panel plane F is calculated using geometric Boolean operations, as shown in formula (28):

[0179]

[0180] The area of ​​Sd is calculated as the projected area of ​​the radiation source onto the photovoltaic panel. The area of ​​Sd can also be calculated using the classic polygon area calculation method, which involves decomposing the polygon Sd into several triangles, calculating the area of ​​each triangle using the triangle area formula, and summing the areas of all triangles to obtain the area of ​​Sd. Alternatively, the area of ​​a polygon can be calculated using the shoelace formula (29), specifically: Let the vertices of a polygon Sd be, in clockwise or counterclockwise order: (a1, b1), (a2, b2), ..., (a...). q b q If the area of ​​Sd is ), then the formula for calculating the area of ​​Sd is:

[0181]

[0182] The amount of incident radiation on the photovoltaic panel can be calculated after each HDR image synthesis, and the time interval between each HDR image capture can be set to no less than 3 minutes.

[0183] The calculation of projected area can be applied to both fixed photovoltaic systems and dynamic component systems. Dynamic component systems can include photovoltaic louvers or tracking brackets. When the tilt angle, orientation, and real-time attitude angle of the dynamic components are adjusted, the calculation can be achieved simply by adjusting the coordinates of the plane of the obstruction and the plane of the photovoltaic panel.

[0184] Therefore, considering the actual three-dimensional spatial orientation of photovoltaic panels and complex shading environments, a geometric projection model between the photovoltaic panel and sky segments is constructed. The contribution of each sky segment to the scattered radiation on the photovoltaic panel surface is calculated block by block. Based on solar azimuth and path simulation, combined with shading image recognition results, the direct radiation incident amount is estimated. Simultaneously, ground reflection modeling is introduced, treating the ground as a secondary radiation source, to estimate its reflected scattering component to the photovoltaic panel. These three types of radiation are combined to construct an hourly incident energy spectrum for the photovoltaic panel, improving the accuracy of the temporal and spatial distribution of incident radiation on the photovoltaic panel surface.

[0185] In an optional embodiment, predicting the power generation of a photovoltaic panel based on direct solar radiation, sky diffuse radiation, and ground reflected radiation may include the following steps:

[0186] Calculate the surface temperature of the photovoltaic panel;

[0187] Calculate the power generation of the photovoltaic panel.

[0188] The surface temperature of the photovoltaic panel can be calculated using an empirical temperature model, as shown in formula (30):

[0189]

[0190] In the formula, This refers to the ambient temperature, expressed in °C. The temperature of the photovoltaic panel is expressed in °C. The calculated incident radiation amount on the photovoltaic panel is expressed in W / m². 2 ; This is the product of the photovoltaic panel's transmittance and absorptivity. The heat loss coefficient of the photovoltaic panel; This refers to the conversion efficiency of the photovoltaic panel.

[0191] The photovoltaic power generation P can be calculated according to the Pvwatts model, as shown in formula (31):

[0192]

[0193] In the formula, This represents the effective incident irradiance, expressed in W / m². 2 ; This indicates the DC power of a photovoltaic module under standard test conditions, expressed in W. This refers to the temperature coefficient of the photovoltaic panel, expressed in % / °C, typically between -0.3% / °C and -0.5% / °C, and is provided by the photovoltaic manufacturer. The temperature of the photovoltaic panel under standard test conditions is expressed in °C, typically 25 °C. The inverter efficiency is typically 0.96 to 0.99.

[0194] In an optional embodiment, calculating the illuminance of the indoor working plane corresponding to each louver angle in all preset louver angle schemes based on the acquired sky image may include the following steps:

[0195] Define the indoor work plane, for example, set the work plane as 0.75m above the ground;

[0196] Set up all illuminance measurement points within the indoor working plane. The arrangement of the illuminance measurement points can refer to Section 6.3 of the standard "Methods for Daylight Measurement" GB / T 5699-2017.

[0197] Calculate the illuminance value for each illuminance measurement point.

[0198] The illuminance value at each illuminance measurement point can be calculated using the five-step method of the Radiance software. Specifically, after establishing the real-time sky model, the radiance software exports the sky brightness matrix (smx file), sky material (rad file), Cds matrix, and Ssun matrix as input parameters for the Radiance daylighting simulation. The Radiance software can then directly output the illuminance value at each illuminance measurement point.

[0199] The formula for calculating illuminance value is shown in formula (32):

[0200]

[0201] Where I represents the result vector, i.e., illuminance; V represents the view matrix, which is determined based on the location of the illuminance measurement point; T is the transmission matrix, which is determined based on the pre-set louver file, which contains louver geometric parameters, including at least the length and width of the louvers, the louver spacing, the louver angle, and the louver optical parameters, which may include reflectivity and roughness, etc.; D represents the sunlight matrix; and S represents the sky matrix. The view matrix representing the direct component; The solar radiation matrix representing the direct component; The sky matrix representing the direct component; Represents the coefficient matrix; This represents the matrix of direct sunlight.

[0202] During each calculation, the sun's position in the sky can be determined by combining the sun's position in the synthesized HDR image with the lens orientation and position in the sky image acquisition module.

[0203] This effectively improves the efficiency of illuminance calculation.

[0204] In an optional embodiment, the formula for calculating the proportion of indoor floor area with an illuminance value greater than a preset illuminance value to the total indoor floor area is as follows:

[0205]

[0206] In the formula, The percentage of the indoor working area greater than 300 lx; The number of illuminance measurement points in the plane with an illuminance greater than 300 lx; This represents the total number of illuminance measurement points within the plane.

[0207] Specifically, the preset illuminance value can be set to 300xl, and the preset ratio value can be set to 60%.

[0208] In an optional embodiment, the glare generation rate (DGP) is calculated using the following formula:

[0209]

[0210] In the formula, The vertical illuminance of the field of view in the entire HDR image, in lx; The value of the i-th glare source in the HDR image is expressed in cd / m². 2 ; Let be the solid angle of the i-th glare source in the HDR image, in degrees; for .

[0211] Glare rate can be directly output by the Radiance software. When calculating glare rate, the input parameter of Radiance software is the HDR image. Before calculating glare rate, a viewpoint should be selected. Based on the viewpoint position, HDR image and preset venetian blind file, Radiance software can output glare rate. The venetian blind file contains the venetian blind angle.

[0212] In an optional embodiment, the method for calculating the field of view may include the following steps:

[0213] Determine the viewpoint; the viewpoint position can be the same as the viewpoint position used in the glare incidence rate calculation.

[0214] More than 4,000 rays are emitted from the viewpoint, each ray directly hitting the building envelope and objects inside the room, mainly including walls, ceilings, floors, and furniture. The ratio of the number of rays that shine through the windows to the dome and other surrounding outdoor objects (i.e., excluding rays blocked by shading devices) to the total number of rays that shine on the louvers, dome, and surrounding outdoor objects is calculated.

[0215] Generally, the spatial arrangement from outdoors to indoors is as follows: sun, blinds, windows, and interior. Therefore, light emitted from a viewpoint will first hit the exterior walls, ceiling, and floor, with some light passing through the windows. After that, some light will hit the blinds, while the rest will hit the sky and other outdoor objects.

[0216] Specifically, the viewpoint can be located 1.25m above the ground facing the window, with a distance of not less than 1m and not more than 6m from the window.

[0217] When the user selects the optimal working mode for the louvers, the ideal values ​​of three indicators—power generation, visibility, and glare rate—are calculated using the TOPSIS model, and the angle of each louver in the first photovoltaic louver module is adjusted based on the obtained ideal values.

[0218] When the user does not select a mode, the overall optimal mode is maintained by default.

[0219] The method for calculating the ideal values ​​of the three indicators—power generation, visibility, and glare incidence—using TOPSIS is as follows:

[0220] Based on power generation, visibility, and glare incidence, an original scoring matrix equation is constructed.

[0221] The original rating matrix is ​​standardized to obtain the standardized matrix;

[0222] Calculate the information entropy values ​​of the three indicators: power generation, visibility rate, and glare occurrence rate.

[0223] The weights of the three indicators—power generation, visibility, and glare incidence—were obtained.

[0224] Weight the standardized matrix;

[0225] To obtain the ideal values ​​for power generation, visibility, and glare incidence, i.e., to obtain the power generation, visibility, and glare incidence corresponding to the overall optimal mode.

[0226] S111 to S115 are repeated within a preset time step.

[0227] Other contents that are the same as in Example 1 will not be repeated.

[0228] The beneficial effects of this invention are as follows: by acquiring, processing, and analyzing sky images, the relationship between louver angle and power generation, glare rate, field of view, and illuminance value is obtained; the louvers are divided into two parts, the first photovoltaic louver component in the upper window can adjust the louver angle in real time according to the control module, and the second photovoltaic louver component in the lower window adjusts the louver angle in real time according to the power generation calculation results, so as to maximize the power generation within a preset time step. The first photovoltaic louver component and the second photovoltaic louver component can be controlled independently to meet the user / lighting needs and power generation needs respectively, so that the dynamic photovoltaic louver system can be adjusted according to the current actual lighting environment and indoor usage, thereby improving the automation and intelligence of the dynamic photovoltaic louver system.

[0229] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dynamic photovoltaic louver system, characterized in that, include: The system comprises a first photovoltaic louver module, a second photovoltaic louver module, a sky image acquisition module, a control module, and a drive module. The first photovoltaic louver module includes a plurality of louvers. The first photovoltaic louver module is connected to a drive module. The louvers in the first photovoltaic louver module can be angled under the action of the drive module to meet the needs of light collection or power generation. The second photovoltaic louver module includes a plurality of louvers. The second photovoltaic louver module is connected to the drive module. The louvers in the second photovoltaic louver module can be angled under the action of the drive module to meet the power generation demand. The sky image acquisition module is capable of acquiring sky images, and the sky image acquisition module is electrically connected to the control module; The control module can calculate the illuminance, power generation, glare rate and field of view of the indoor working plane corresponding to each louver angle in the preset louver angle scheme based on the collected sky image. According to the user's needs and calculation results, the control module selects the louver angle and sends the command to the drive module. The drive module adjusts the angle of the first photovoltaic louver component and the second photovoltaic louver component according to the command sent by the control module. The control module calculates the power generation corresponding to all louver angles in the preset louver angle scheme, selects the maximum power generation angle corresponding to the maximum power generation value, and sends a command to the drive module. The drive module controls the rotation of each louver in the second photovoltaic louver assembly so that the angle of each louver in the second photovoltaic louver assembly is the maximum power generation angle. The method for calculating power generation based on sky images acquired from the sky in the control module includes the following steps: Acquire sky images and synthesize HDR images; Analyze sky radiation information based on HDR images; Establish a real-time sky model based on sky radiation information; Calculate the incident radiation of the photovoltaic panel in the louver. The incident radiation of the photovoltaic panel includes direct solar radiation, sky diffuse radiation, and ground reflected radiation. The power generation of photovoltaic panels is calculated based on the incident radiation, which includes direct solar radiation, sky diffuse radiation, and ground reflected radiation.

2. The dynamic photovoltaic louver system according to claim 1, characterized in that, The vertical distance between each louver in the first photovoltaic louver assembly and the ground is greater than the vertical distance between each louver in the second photovoltaic louver assembly and the ground.

3. The dynamic photovoltaic louver system according to claim 1, characterized in that, The control module calculates the illuminance of the indoor working plane corresponding to all louver angles in the preset louver angle scheme. When the illuminance of the indoor working plane corresponding to a certain louver angle meets the preset illuminance conditions, the control module filters the illuminance of the indoor working plane, filters out the louver angles that meet the preset illuminance conditions, and calculates the power generation, glare occurrence rate and field of view rate corresponding to the louver angles that meet the preset illuminance conditions. Based on the user-selected louver working mode, the control module selects an angle α that matches the louver working mode, and sends a command to the drive module. The drive module controls the rotation of each louver in the first photovoltaic louver assembly so that the angle of each louver in the first photovoltaic louver assembly is α.

4. A control method for a dynamic photovoltaic louver system, using the dynamic photovoltaic louver system described in any one of claims 1-3, characterized in that, Adjust the angle of each louver in the second photovoltaic louver module to the angle of maximum power generation. Determine if there are any people currently inside the room. If not, adjust the angle of each louver in the first photovoltaic louver module to the angle of maximum power generation. If it exists, then determine whether it is currently working hours. If it is not during working hours, adjust the angle of each louver in the first photovoltaic louver module to the angle of maximum power generation. During working hours, the angle of each louver in the first photovoltaic louver module is adjusted according to user needs or current indoor illuminance conditions.

5. The control method for the dynamic photovoltaic louver system according to claim 4, characterized in that, The method for calculating the angle of maximum power generation includes: The sky image acquisition module acquires sky images; Based on the collected sky images, the power generation corresponding to each louver angle in all preset louver angle schemes is calculated. The louver angle corresponding to the maximum power generation among all louver angles is the angle with the maximum power generation.

6. The control method for the dynamic photovoltaic louver system according to claim 4, characterized in that, The adjustment of the angle of each louver in the first photovoltaic louver module according to user needs or current indoor illuminance conditions includes: The sky image acquisition module acquires sky images; Based on the collected sky images, the illuminance of the indoor working plane corresponding to each louver angle in all preset louver angle schemes is calculated. Determine whether the calculated indoor working plane illuminance meets the preset illuminance conditions. If the illuminance of the indoor working plane corresponding to all louver angles does not meet the preset illuminance conditions, then control the louver angle of each louver in the first photovoltaic louver module to be adjusted to 0°, that is, the louvers are horizontal. If the illuminance of the indoor working plane corresponding to a certain louver angle meets the preset illuminance conditions, then select the louver angle scheme that meets the preset illuminance conditions. Calculate the glare rate, field of view, and power generation for each louver angle in the louver angle scheme that meets the preset illuminance conditions. Based on the user-selected louver operating mode, select an angle that matches the preset louver angle scheme that meets the louver operating mode, and adjust the angle of each louver in the first photovoltaic louver module according to the selected angle.

7. The control method for the dynamic photovoltaic louver system according to claim 6, characterized in that, Determining whether the calculated indoor working plane illuminance meets the preset illuminance conditions includes: Determine whether the proportion of the indoor floor area with an illuminance value calculated based on the current louver angle that is greater than a preset illuminance value is greater than a preset proportion value. If so, then the current louver angle meets the preset illuminance conditions; If not, then the current louver angle does not meet the preset illuminance conditions.

8. The control method for the dynamic photovoltaic louver system according to claim 6, characterized in that, The user-selected louver operating modes include optimal power generation mode, optimal glare mode, optimal field of vision mode, and optimal overall mode.

9. The control method for the dynamic photovoltaic louver system according to claim 6, characterized in that, When the user selects the optimal working mode for the louvers, the ideal values ​​of three indicators—power generation, visibility, and glare rate—are calculated using the TOPSIS model, and the angle of each louver in the first photovoltaic louver module is adjusted based on the obtained ideal values.

Images