A solar lighting automatic adjustment device

Abstract

The present invention relates to the technical field of solar light collection equipment, and in particular to a solar lighting automatic adjustment device, which determines whether to turn on the automatic adjustment of photovoltaic panels according to weather data, and determines whether to correct the angular rotation trajectory of the light capture angle of the solar photovoltaic panel according to the degree and speed of dust falling on the photovoltaic panel surface, including determining the angular rotation trigger time of the solar photovoltaic panel according to the imaging image, determining the angular rotation direction and angular rotation size of the solar photovoltaic panel according to the sunshine data and the imaging image, and determining the actual angular rotation size in combination with the angular rotation size, the degree and speed of dust falling. Thus, the sensitivity of the angle adjustment of the device is controlled by setting a preset area, a preset roundness threshold, and changing the area radius of the center point area, so that the photovoltaic panel in the solar lighting automatic adjustment device can perform photoelectric conversion more effectively.

Description

Technical Field

[0001] The invention relates to the technical field of solar light collection equipment, and in particular to an automatic solar lighting adjustment device. Background Art

[0002] Solar lighting technology has received widespread attention in recent years. With the intensification of the energy crisis and the improvement of environmental protection awareness, people are increasingly inclined to look for renewable energy to replace traditional fossil fuels. Solar lighting technology came into being in this context. It collects outdoor sunlight through a specific lighting system to reduce dependence on artificial lighting, reduce energy consumption, and reduce environmental pollution. Existing solar lighting technology still faces some challenges, including how to maintain efficient lighting performance in different geographical locations and climatic conditions, how to reduce system costs, and how to further reduce the loss of optical components. Therefore, the development of new efficient, economical and reliable solar lighting systems to meet the needs of different buildings and environments is an important direction of current technological development.

[0003] Chinese patent publication number CN108052125A discloses a solar lighting automatic adjustment device, in which the rear ends of the base and the flip seat are hinged together, and the front ends are respectively provided with supports and hinged to the two ends of the electric push rod; a driving gear and a driven gear are installed on the flip seat, and the driving gear is connected to the rotating shaft of the stepping motor by transmission, and a main swing arm is fixed on the driven gear, and a lighting identifier is fixed at the end of the main swing arm, and a solar panel bracket is fixed at the end of a plurality of slave swing arms, and each slave swing arm is linked to the main swing arm. The present invention can ensure that each solar panel maintains a standard relative position with the direction of sunlight, so as to achieve the purpose of maximizing the use of solar energy. The side walls around the housing of the lighting discriminator are used as the light-blocking reference limit, and the component structure is simple, accurate and reliable. The device of the present invention can make full use of solar energy resources to the greatest extent, and achieve the effect of energy saving and cost saving. It can be seen that the invention has the following problems:

[0004] (1) The invention does not take into account that the power used by the photovoltaic panel for automatic regulation does not match the power it generates, resulting in the situation where the power used by the automatic regulation device is greater than the power it generates;

[0005] (2) When it is determined that the power generated by the automatic adjustment of the photovoltaic panels is greater than the power used, the solar panels are not accurately adjusted to maintain a standard relative position with respect to the direction of sunlight, and the accuracy of the automatic adjustment of the solar panels cannot be flexibly adjusted. Summary of the invention

[0006] To this end, the present invention provides a solar lighting automatic adjustment device to overcome the problem in the prior art that the electric energy used by the solar lighting automatic adjustment device does not match the electric energy it generates.

[0007] To achieve the above object, the present invention provides a solar lighting automatic adjustment device, comprising:

[0008] A solar energy collection unit, including a number of solar photovoltaic panels, for obtaining the sunshine data of the day, weather data and capturing the sun's rays;

[0009] A light monitoring unit, which is arranged on the solar energy collection unit, is used to determine the degree of dust falling on the solar photovoltaic panel surface, the dust falling speed on the solar photovoltaic panel surface, and, based on the image of the captured light on the imaging board, determine whether the sun's light is in a standard relative position with the photovoltaic panel;

[0010] A central adjustment unit, which is connected to the light monitoring unit and the solar energy collection unit respectively, and is used to determine whether to start the automatic adjustment of the photovoltaic panel according to the weather data, and to determine whether to correct the angular rotation trajectory of the light capture angle of the solar photovoltaic panel according to the dust falling degree and dust falling speed on the photovoltaic panel surface;

[0011] The determination of the angle rotation trajectory includes determining the angle rotation trigger time of the solar photovoltaic panel according to the imaging image, determining the angle rotation direction and angle rotation size of the solar photovoltaic panel according to the sunshine data and the imaging image, and determining the actual angle rotation size in combination with the angle rotation size, the dust falling degree and the dust falling speed;

[0012] An angle rotation unit, which is connected to the central adjustment unit, and is used to perform angle rotation on the solar photovoltaic panel according to the angle rotation direction and angle rotation size determined by the central adjustment unit at the angle rotation trigger time;

[0013] A light adjustment unit, which is connected to the angle rotation unit and the central adjustment unit respectively, and includes a plurality of reflective panels, and is used to determine the positions of the open reflective panels according to the posture of the solar photovoltaic panel to increase the sunlight captured by the solar energy collection unit;

[0014] The sunshine data include sunrise time, sunset time and sun track, the weather data include ultraviolet intensity and weather type, and the imaging image includes imaging plate image and imaging point image.

[0015] It is understandable that the angle rotation unit controls the rotation of the solar panel, the central adjustment unit makes multiple judgments, the solar energy collection unit acquires data, and the illumination unit processes and monitors the focused imaging image, all of which require power consumption.

[0016] Furthermore, the light monitoring unit is arranged at the center of the solar energy collection unit, and comprises:

[0017] A double-sided lens, comprising a plane and a convex surface superimposed together, wherein the side of the double-sided lens close to the photovoltaic panel is set as the convex surface, and the side of the double-sided lens away from the photovoltaic panel is set as the plane, so as to focus the transmitted sunlight through the plane and the convex surface to form an image on the imaging plate;

[0018] An imaging plate, which is fixedly connected to the double-sided lens through a plurality of support rods and is fixedly connected to the solar energy collection unit, and is used to focus sunlight onto the imaging plate;

[0019] An image acquisition component, which is arranged on the support rod and is used to collect the imaging image on the imaging plate;

[0020] The plane is arranged parallel to the solar energy collection unit, and the distance between the plane and the imaging plate is less than or equal to twice the focal length of the convex surface.

[0021] Furthermore, the light monitoring unit generates an image after preprocessing the focused imaging image on the imaging plate, and determines the shape of the imaging point image and the focus center point according to the light and dark contrast of the imaging image;

[0022] Wherein, the preprocessing includes denoising and decoloring, and the focusing center point is located at the center of the imaging point image.

[0023] Furthermore, the light adjustment unit includes a plurality of reflective panels, which are located at the outer edge of the solar photovoltaic panel and are used to reflect sunlight through the reflective panels to increase the light captured by the solar energy collection unit.

[0024] Furthermore, the central adjustment unit determines whether to start automatic adjustment of the photovoltaic panel according to the weather data of the day, including:

[0025] If the weather type is a preset type and the ultraviolet intensity is greater than or equal to a preset ultraviolet minimum threshold, the central adjustment unit determines to start automatic adjustment of the photovoltaic panel on that day;

[0026] If the weather type is not the preset type or the ultraviolet intensity is less than the preset ultraviolet minimum threshold, the central adjustment unit determines not to start the automatic adjustment of the photovoltaic panel on that day.

[0027] Further, the central adjustment unit adjusts the solar photovoltaic panel to an angle that is in a standard relative position with the sunlight at a preset time point on the day under the first preset condition;

[0028] Among them, the first preset condition is that the central adjustment unit determines that the automatic adjustment of the photovoltaic panel will not be turned on on that day.

[0029] Further, under the second preset condition, the central adjustment unit determines whether to correct the angle rotation trajectory according to the dust falling degree and dust falling speed of the photovoltaic panel surface, including:

[0030] If the dust falling degree is greater than or equal to a preset dust falling degree and / or the dust falling speed is greater than or equal to a preset speed, the central adjustment unit determines not to correct the angle rotation trajectory;

[0031] If the dust falling degree is less than a preset dust falling degree and the dust falling speed is less than a preset speed, the central adjustment unit determines to correct the angle rotation trajectory;

[0032] Among them, the second preset condition is that the central adjustment unit determines to turn on the automatic adjustment of the photovoltaic panel on that day, and the dust level is the ratio of the dust area on the photovoltaic panel to the area of ​​the photovoltaic panel.

[0033] Furthermore, it is determined whether the solar light is in a standard relative position with the photovoltaic panel according to the center point of the imaging point image in the imaging image, wherein:

[0034] If the circularity of the focused imaging center shape is greater than a preset circularity threshold and its center point is located in a preset center point area of ​​the imaging plate, the central adjustment unit determines that the solar energy light and the photovoltaic panel are in a standard relative position.

[0035] Furthermore, when the solar energy light and the photovoltaic panel are not in a standard relative position, the central adjustment unit determines the angle rotation trigger time of the solar energy collection unit according to the area of ​​the focused imaging image in the imaging image, wherein:

[0036] If the area of ​​the focused imaging image is less than or equal to the preset area, the central adjustment unit determines that the current time has not reached the angle rotation trigger time, and does not adjust the light capture angle of the solar photovoltaic panel;

[0037] If the area of ​​the focused imaging image is larger than the preset area, the central adjustment unit determines that the current time reaches the angle rotation trigger time, and controls the angle adjustment unit to adjust the light capture angle of the solar photovoltaic panel;

[0038] Wherein, the preset area is determined according to a standard area and a preset error, and the preset error is determined according to the sensitivity of the angle adjustment unit in adjusting the light capture angle;

[0039] The preset error is negatively correlated with the sensitivity.

[0040] Furthermore, when determining that the angle rotation trigger time condition is reached, the central adjustment unit determines the angle rotation direction of the solar energy collection unit according to the positional relationship between the distortion center point of the distorted shape of the focused imaging and the center point of the imaging plate.

[0041] Compared with the prior art, the beneficial effect of the present invention lies in that the present invention takes into account whether the electric energy used by the solar lighting automatic adjustment device during automatic adjustment matches the electric energy it generates, thereby avoiding the use of electric energy exceeding the electric energy generated by the device, causing waste of electric energy and increasing the number of times the device is used, thereby reducing the service life of the device.

[0042] Furthermore, when the present invention determines that the electric energy used by the device does not exceed the electric energy generated by the device, the sensitivity of the angle adjustment of the device is controlled by setting a preset area, a preset roundness threshold and changing the area radius of the center point area, so as to more effectively enable the photovoltaic panels in the solar lighting automatic adjustment device to perform photoelectric conversion. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a connection diagram of the solar lighting automatic adjustment device according to an embodiment of the present invention;

[0044] Figure 2 This is a flow chart of the automatic solar lighting adjustment device according to an embodiment of the present invention;

[0045] Figure 3 This is a flow chart of the central regulating unit in an embodiment of the present invention;

[0046] Figure 4 The present invention provides a process for determining the start time and end time of automatic adjustment of photovoltaic panels. DETAILED DESCRIPTION

[0047] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0048] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0049] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0050] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] See also Figure 1 and Figure 2 As shown, they are respectively a connection diagram of an automatic solar lighting adjustment device according to an embodiment of the present invention and a flow chart of an automatic solar lighting adjustment device according to an embodiment. The present invention provides an automatic solar lighting adjustment device, comprising:

[0052] A solar energy collection unit, including a number of solar photovoltaic panels, for obtaining the sunshine data of the day, weather data and capturing the sun's rays;

[0053] A light monitoring unit, which is arranged on the solar energy collection unit, is used to determine the degree of dust falling on the solar photovoltaic panel surface, the dust falling speed on the solar photovoltaic panel surface, and, based on the image of the captured light on the imaging board, determine whether the sun's light is in a standard relative position with the photovoltaic panel;

[0054] a central adjustment unit, which is connected to the light monitoring unit and the solar energy collection unit respectively, and is used to determine whether to start the automatic adjustment of the photovoltaic panel according to the weather data, and when determining to start the automatic adjustment of the photovoltaic panel, determine whether to correct the angle rotation trajectory of the light capture angle of the solar photovoltaic panel in combination with the dust falling degree and the dust falling speed of the day, and when not correcting the angle rotation trajectory of the solar photovoltaic panel, determine the angle rotation trajectory according to the sunshine data;

[0055] The determination of the angle rotation trajectory includes determining the angle rotation trigger time of the solar photovoltaic panel according to the imaging image when the light monitoring unit detects that the solar energy light is not in a standard relative position with the photovoltaic panel, determining the angle rotation direction and angle rotation size of the solar photovoltaic panel according to the sunshine data and the imaging image at the angle rotation trigger time, and determining the actual angle rotation size in combination with the angle rotation size, the dust falling degree and the dust falling speed when correcting the angle rotation trajectory of the solar photovoltaic panel;

[0056] An angle rotation unit, which is connected to the central adjustment unit, and is used to perform angle rotation on the solar photovoltaic panel according to the angle rotation direction and angle rotation size determined by the central adjustment unit at the angle rotation trigger time (here, a moment);

[0057] A light adjustment unit, which is connected to the angle rotation unit and the central adjustment unit respectively, and includes a plurality of reflective panels, and is used to determine the positions of the open reflective panels according to the posture of the solar photovoltaic panel to increase the sunlight captured by the solar energy collection unit;

[0058] The sunshine data include sunrise time, sunset time and sun track, the weather data include ultraviolet intensity and weather type, and the imaging image includes imaging plate image and imaging point image.

[0059] In implementation, the light monitoring unit includes a photographing component with a shooting function, which is used to take photos of dust on the solar photovoltaic panel to determine the degree and speed of dust falling; it can be understood that the photographing component can be set as a four-rotor with a photographing function, or it can be a monitoring camera set next to the photovoltaic panel and at a certain height.

[0060] Specifically, the light monitoring unit is arranged at the center of the solar energy collection unit and includes:

[0061] A double-sided lens, comprising a plane and a convex surface superimposed together, wherein the side of the double-sided lens close to the photovoltaic panel is set as the convex surface, and the side of the double-sided lens away from the photovoltaic panel is set as the plane, so as to focus the transmitted sunlight through the plane and the convex surface to form an image on the imaging plate; in implementation, a convex lens with both sides convex can also be used instead of the double-sided lens;

[0062] An imaging plate, which is fixedly connected to the double-sided lens through a plurality of support rods and is fixedly connected to the solar energy collection unit, and is used to focus sunlight onto the imaging plate;

[0063] An image acquisition component, which is arranged on the support rod and is used to collect the imaging image on the imaging plate;

[0064] The plane is arranged parallel to the solar energy collection unit, and the distance between the plane and the imaging plate is less than or equal to twice the focal length of the convex surface.

[0065] In implementation, preferably, the distance between the plane and the imaging plate is equal to twice the focal length of the convex surface.

[0066] Specifically, the light monitoring unit pre-processes the focused imaging image on the imaging plate to generate an image and transmits the imaging image to the central adjustment unit, and the central adjustment unit determines the shape of the imaging point image and the focus center point according to the light and dark contrast of the imaging image;

[0067] Wherein, the preprocessing includes denoising and decoloring, and the focusing center point is located at the center of the imaging point image.

[0068] In implementation, the decolorization process is to process the image into a black, white and gray three-color image.

[0069] Specifically, the light adjustment unit includes a plurality of reflective panels, which are located at the outer edge of the solar photovoltaic panel and are used to reflect sunlight through the reflective panels to increase the light captured by the solar energy collection unit.

[0070] In implementation, the reflective sheet is connected to the photovoltaic panel via a hinge.

[0071] See also Figure 3 As shown, it is a flow chart of the central adjustment unit in an embodiment of the present invention. The central adjustment unit determines whether to start the automatic adjustment of the photovoltaic panel according to the weather data of the day, including:

[0072] If the weather type is a preset type and the ultraviolet intensity is greater than or equal to the preset ultraviolet minimum threshold, the central adjustment unit determines to turn on the photovoltaic panel for automatic adjustment on that day; in implementation, the preset type is set to sunny, and the preset ultraviolet minimum threshold is set to 5, that is, if the weather type is sunny and the ultraviolet intensity is greater than or equal to 5, the central adjustment unit determines to turn on the photovoltaic panel for automatic adjustment on that day; it can be understood that when the weather type is sunny and the ultraviolet intensity is greater than or equal to 5, it means that the light intensity on that day is strong enough to match the electric energy used by the photovoltaic panel for adjustment and the electric energy generated by it;

[0073] If the weather type is not the preset type or the ultraviolet intensity is less than the preset ultraviolet minimum threshold, the central adjustment unit determines not to turn on the automatic adjustment of the photovoltaic panels on that day; it can be understood that this means that the light intensity on that day cannot match the electric energy used for the adjustment of the photovoltaic panels and the electric energy generated by them, so the automatic adjustment of the angle of the photovoltaic panels is of little significance for power generation and energy storage, so there is no need to turn on the automatic adjustment of the photovoltaic panels.

[0074] See also Figure 4As shown, it is a process for determining the start time and end time of the automatic adjustment of the photovoltaic panel according to an embodiment of the present invention. In implementation, the start time and end time of the automatic adjustment of the solar photovoltaic panel on the day are determined according to the sunrise time and the sunset time on the day. Within 1 to 2 hours after sunrise and 1 to 2 hours before sunset, it is difficult for the photovoltaic panel to generate electricity through sunlight. Therefore, the start time and end time of the solar lighting automatic adjustment device on the day need to be determined within this period of time. Generally, the start time of automatic adjustment of the photovoltaic panels on the day in summer is set at 1 hour after sunrise, and the end time is set at 1 hour before sunset (in one implementation, the sunrise time in summer is 5:01 and the sunset time is 19:35, then the corresponding start time of automatic adjustment of the photovoltaic panels is 6:01, and the end time is 18:35); the start time of automatic adjustment of the photovoltaic panels on the day in winter is set at 2 hours after sunrise, and the end time is set at 2 hours before sunset (in one implementation, the sunrise time in summer is 6:55 and the sunset time is 17:35, then the corresponding start time of the solar energy lighting automatic adjustment device is 8:55 and the end time is 15:35); the start time of automatic adjustment of the photovoltaic panels on the day in spring and autumn is set at 90 minutes after sunrise, and the end time is set at 90 minutes before sunset.

[0075] Specifically, the central adjustment unit adjusts the solar photovoltaic panel to an angle of a standard relative position with the sunlight at a preset time point of the day under the first preset condition;

[0076] Among them, the first preset condition is that the central adjustment unit determines that the automatic adjustment of the photovoltaic panel will not be turned on on that day.

[0077] It will be appreciated that the standard relative position includes the photovoltaic panel being perpendicular / approximately perpendicular to the sun's rays.

[0078] It is understandable that the time period when the sunlight is strongest in a day is 12:30-13:30, so the preset time is selected from 12:30-13:30. The preferred selection method is to take the middle of this time period and select 13:00 as the preset time.

[0079] During implementation, the central regulation unit is connected to the Internet and uses GIS software or Wish3D Earth online platform to obtain sunshine analysis function to understand the trajectory of the sun at a specific time and place, and then determines the angle of the sun's rays in combination with the current geographical location of the automatic adjustment of the photovoltaic panels, and then adjusts the solar photovoltaic panels to a standard relative position with the sun's rays.

[0080] Specifically, the central adjustment unit determines whether to correct the angle rotation trajectory under the second preset condition according to the dust falling degree and dust falling speed of the photovoltaic panel surface (before or at sunrise on the same day), including:

[0081] If the dust falling degree is greater than or equal to a preset dust falling degree and / or the dust falling speed is greater than or equal to a preset speed, the central adjustment unit determines not to correct the angle rotation trajectory;

[0082] If the dust falling degree is less than a preset dust falling degree and the dust falling speed is less than a preset speed, the central adjustment unit determines to correct the angle rotation trajectory;

[0083] Among them, the second preset condition is that the central adjustment unit determines to turn on the automatic adjustment of the photovoltaic panel on that day, and the dust level is the ratio of the dust area on the photovoltaic panel to the area of ​​the photovoltaic panel.

[0084] In practice, the method for correcting the angle rotation trajectory is to increase the current tilt angle of the photovoltaic panel without changing the current tilt trend of each point after determining that the photovoltaic panel is in a standard relative position with the light, so that the dust falls freely from the photovoltaic panel. It can be understood that the size of the acute angle between the photovoltaic panel and the ground is increased only on the basis of the existing tilt direction. Generally, the tilt angle is increased to be greater than or equal to 45°.

[0085] It can be understood that the degree of dust is the ratio of the dust area on the photovoltaic panel to the area of ​​the photovoltaic panel. The degree of dust on the solar photovoltaic panel will affect the power generation capacity of the photovoltaic panel, and the greater the degree of dust, the weaker the power generation capacity of the photovoltaic panel. When the degree of dust is too large, it is necessary to clean the photovoltaic panel to ensure the power generation performance of the photovoltaic panel. Therefore, the preset dust degree is generally set to 0.5 to ensure the power conversion capacity of the photovoltaic panel.

[0086] It can be understood that the ash falling speed is determined by the ash falling degree at each time node. The ash falling speed between two adjacent time nodes = the difference in ash falling degree / the time interval between the two time nodes. The unit of ash falling speed is h. -1 ; The time intervals between each time node are of equal length. In order to save the electric energy used by the photographing component in the automatic adjustment of the photovoltaic panel, the time interval is usually set to between half an hour and two hours, preferably to 1 hour. In one implementation, the dust photo taken for the first time before sunrise is set as the first time node, and the interval between the second time node and the first time node is 1 hour, and so on. In implementation, when the dust falling speed is not fast, the angle rotation trajectory can be corrected to remove the dust to avoid affecting the electrical conversion capacity of the photovoltaic panel. When the dust falling speed is high, the angle rotation trajectory cannot avoid the impact of the dust falling on the electrical conversion capacity of the photovoltaic panel, and it will also reduce its ability to absorb solar energy and convert it into electrical energy. Therefore, a preset dust falling speed is set to determine whether to correct the angle rotation trajectory.

[0087] Specifically, when the central adjustment unit determines not to correct the angle rotation trajectory, it determines whether the solar energy light is in a standard relative position with the photovoltaic panel according to the geometric center point of the imaging point image in the imaging image, wherein:

[0088] If the shape roundness of the imaging point image is greater than a preset roundness threshold and its center point is located in a preset center point area of ​​the imaging plate, the central adjustment unit determines that the solar energy light and the photovoltaic panel are in a standard relative position;

[0089] If the shape of the imaging point image is distorted (the roundness of the shape of the imaging point image is less than or equal to a preset roundness threshold) or its center point is not located in the center point area of ​​the imaging plate, the central adjustment unit determines that the solar energy light and the photovoltaic panel are not in a standard relative position.

[0090] It can be understood that the smaller the roundness of the shape of the imaging point image, the closer the imaging point image is to a circle; the center point area includes a circular area with the center point as the center; therefore, the sensitivity of the automatic adjustment of the photovoltaic panel can be adjusted by setting the preset roundness threshold and changing the area radius of the center point area, that is, the smaller the roundness of the shape of the imaging point image, the closer the imaging point image is to a circle, and the smaller the area radius, the higher the sensitivity of the automatic adjustment of the photovoltaic panel; generally, the preset roundness threshold is set to 2, and the area radius is set to 1 cm.

[0091] Specifically, when the solar energy light and the photovoltaic panel are not in a standard relative position, the central adjustment unit determines the angle rotation trigger time of the solar energy collection unit according to the area of ​​the focused imaging image in the imaging image, wherein:

[0092] If the area of ​​the focused imaging image is less than or equal to the preset area, the central adjustment unit determines that the current time has not reached the angle rotation trigger time, and does not adjust the light capture angle of the solar photovoltaic panel;

[0093] If the area of ​​the focused imaging image is larger than the preset area, the central adjustment unit determines that the current time reaches the angle rotation trigger time, and controls the angle adjustment unit to adjust the light capture angle of the solar photovoltaic panel;

[0094] Wherein, the preset area is determined according to a standard area and a preset error, and the preset error is determined according to the sensitivity of the angle adjustment unit in adjusting the light capture angle;

[0095] The preset error is negatively correlated with the sensitivity.

[0096] In implementation, the standard area is the area of ​​a perfect circle that is focused and imaged when the solar energy light and the photovoltaic panel are in a standard relative position; if a highly sensitive solar energy lighting self-regulating device is required, the preset error is smaller; if a highly sensitive solar energy lighting self-regulating device is not required, the preset error is larger.

[0097] In implementation, the preset error ranges from [0 to three times the standard area]. Preset errors exceeding this range will reduce the sensitivity and power generation capacity of the automatic adjustment device.

[0098] Specifically, when determining that the angle rotation trigger time condition is reached, the central adjustment unit determines the angle rotation direction of the solar energy collection unit according to the positional relationship between the distortion center point of the distorted shape of the focused imaging and the center point of the imaging plate.

[0099] It can be understood that the convex surface forms an inverted image on the imaging plate, so the positional relationship between the distortion center point of the distorted shape of the focused image and the center point of the imaging plate determines the angular rotation direction, and the angular rotation direction is to make the direction on the photovoltaic panel with the same positional relationship away from the ground and the direction on the photovoltaic panel that is symmetrical with the positional relationship about the center point of the photovoltaic panel close to the ground, that is, the photovoltaic panel rotates around the center point of the imaging plate along a straight line connecting the distortion center point and the center point of the imaging plate; in one embodiment, the step of determining the angular rotation direction includes: (1) connecting the distortion center point and the center point of the imaging plate; (2) rotating the photovoltaic panel around the center point of the imaging plate along the connecting line; (3) rotating until the focused imaging point coincides with the center point of the imaging plate; wherein during the rotation, the distortion center point should get closer and closer to the center point of the imaging plate until the shape of the focused image becomes a perfect circle and coincides with the center point of the imaging plate.

[0100] During implementation, after determining the angle rotation unit, the current posture (tilt direction) of the photovoltaic panel is determined, and the side farthest from the ground is determined according to the tilt direction. The light adjustment unit opens the reflector on the side of the photovoltaic panel farthest from the ground to make the reflector and the photovoltaic panel form a right angle.

[0101] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0102] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A solar lighting automatic adjustment device, characterized in that: include: A solar energy collection unit, including a number of solar photovoltaic panels, for obtaining the sunshine data of the day, weather data and capturing the sun's rays; A light monitoring unit, which is arranged on the solar energy collection unit, is used to determine the degree of dust falling on the solar photovoltaic panel surface, the dust falling speed on the solar photovoltaic panel surface, and to determine whether the sun's light is in a standard relative position with the solar photovoltaic panel based on the image of the captured light on the imaging board; A central adjustment unit, which is connected to the light monitoring unit and the solar energy collection unit respectively, and is used to determine whether to start the automatic adjustment of the photovoltaic panel according to the weather data, and to determine whether to correct the angular rotation trajectory of the light capture angle of the solar photovoltaic panel according to the dust falling degree and dust falling speed on the photovoltaic panel surface; The determination of the angle rotation trajectory includes determining the angle rotation trigger time of the solar photovoltaic panel according to the imaging image, determining the angle rotation direction and angle rotation size of the solar photovoltaic panel according to the sunshine data and the imaging image, and determining the actual angle rotation size in combination with the angle rotation size, the dust falling degree and the dust falling speed; The central adjustment unit adjusts the solar photovoltaic panel to an angle that is in a standard relative position with the sunlight at a preset time point on the day under a first preset condition; Wherein, the first preset condition is that the central adjustment unit determines that the automatic adjustment of the photovoltaic panel is not turned on on that day; The central adjustment unit determines whether to correct the angle rotation trajectory according to the dust falling degree and dust falling speed of the photovoltaic panel surface under the second preset condition, including: If the dust falling degree is greater than or equal to a preset dust falling degree and / or the dust falling speed is greater than or equal to a preset speed, the central adjustment unit determines not to correct the angle rotation trajectory; If the dust falling degree is less than a preset dust falling degree and the dust falling speed is less than a preset speed, the central adjustment unit determines to correct the angle rotation trajectory; The second preset condition is that the central adjustment unit determines that the photovoltaic panel is automatically adjusted on that day, and the dust level is the ratio of the dust area on the photovoltaic panel to the area of ​​the photovoltaic panel; An angle rotation unit, connected to the central adjustment unit, for performing angle rotation on the solar photovoltaic panel according to the angle rotation direction determined by the central adjustment unit at the angle rotation trigger time; A light adjustment unit, which is connected to the angle rotation unit and the central adjustment unit respectively, and includes a plurality of reflective panels, and is used to determine the positions of the open reflective panels according to the posture of the solar photovoltaic panel to increase the sunlight captured by the solar energy collection unit; The sunshine data include sunrise time, sunset time and sun track, the weather data include ultraviolet intensity and weather type, and the imaging image includes imaging plate image and imaging point image.

2. The solar lighting automatic adjustment device according to claim 1, characterized in that: The light monitoring unit is arranged at the center of the solar energy collection unit and includes: A double-sided lens, comprising a plane and a convex surface superimposed together, wherein the side of the double-sided lens close to the photovoltaic panel is set as the convex surface, and the side of the double-sided lens away from the photovoltaic panel is set as the plane, so as to focus the transmitted sunlight through the plane and the convex surface to form an image on the imaging plate; An imaging plate, which is fixedly connected to the double-sided lens through a plurality of support rods and is fixedly connected to the solar energy collection unit, and is used to focus sunlight onto the imaging plate; An image acquisition component, which is arranged on the support rod and is used to collect the imaging image on the imaging plate; Wherein, the plane is arranged parallel to the solar energy collection unit, and the distance between the plane and the imaging plate is less than or equal to twice the focal length of the convex surface.

3. The solar lighting automatic adjustment device according to claim 2, characterized in that: The light monitoring unit pre-processes the focused imaging image on the imaging plate to generate an image, and determines the shape of the imaging point image and the focus center point according to the light and dark contrast of the imaging image; Wherein, the preprocessing includes denoising and decoloring, and the focusing center point is located at the center of the imaging point image.

4. The solar lighting automatic adjustment device according to claim 1, characterized in that: The light adjustment unit includes a plurality of reflective plates, which are located at the outer edge of the solar photovoltaic panel and are used to reflect sunlight through the reflective plates to increase the light captured by the solar energy collection unit.

5. The solar lighting automatic adjustment device according to claim 1, characterized in that: The central adjustment unit determines whether to start automatic adjustment of the photovoltaic panel according to the weather data of the day, including: If the weather type is a preset type and the ultraviolet intensity is greater than or equal to a preset ultraviolet minimum threshold, the central adjustment unit determines to start automatic adjustment of the photovoltaic panel on that day; If the weather type is not the preset type or the ultraviolet intensity is less than the preset ultraviolet minimum threshold, the central adjustment unit determines not to start automatic adjustment of the photovoltaic panel on that day.

6. The solar lighting automatic adjustment device according to claim 1, characterized in that: The central adjustment unit determines whether the solar energy light is in a standard relative position with the photovoltaic panel according to the center point of the imaging point image in the imaging image, wherein: If the shape roundness of the imaging point image is greater than a preset roundness threshold and its center point is located in a preset center point area of ​​the imaging plate, the central adjustment unit determines that the solar energy light and the photovoltaic panel are in a standard relative position.

7. The solar lighting automatic adjustment device according to claim 6, characterized in that: The central adjustment unit determines the angle rotation trigger time of the solar energy collection unit according to the area of ​​the focused imaging image in the imaging image, wherein: If the area of ​​the focused imaging image is less than or equal to the preset area, the central adjustment unit determines that the current time has not reached the angle rotation trigger time, and does not adjust the light capture angle of the solar photovoltaic panel; If the area of ​​the focused imaging image is larger than the preset area, the central adjustment unit determines that the current time reaches the angle rotation trigger time, and controls the angle adjustment unit to adjust the light capture angle of the solar photovoltaic panel; Wherein, the preset area is determined according to a standard area and a preset error, and the preset error is determined according to the sensitivity of the angle adjustment unit in adjusting the light capture angle; The preset error is negatively correlated with the sensitivity.

8. The solar lighting automatic adjustment device according to claim 7, characterized in that: When determining that the angle rotation trigger time condition is reached, the central adjustment unit determines the angle rotation direction of the solar energy collection unit according to the positional relationship between the distortion center point of the distorted shape of the focused imaging and the center point of the imaging plate.

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