Automatic dimming LED lamp control system

Abstract

The invention relates to the field of lamp control, in particular to an automatic dimming LED lamp control system which comprises a photosensitive control module, a central calculation module and a light control module. The photosensitive control module is used for setting a brightness threshold value and judging whether the indoor brightness is higher than the brightness threshold value or not; if yes, ending; if not, the central calculation module is opened; the central calculation module comprises an information acquisition unit, a brightness calculation unit and a brightness correction unit; wherein the information acquisition unit is used for acquiring first working information of a target site in real time; according to the method, when the actual brightness of each position of the target site is calculated, the light influence of natural light and an indoor artificial light source is considered, and in addition, the influence of the shielding effect of an indoor shielding object on light on the brightness of each position is also considered, so that compared with a common brightness calculation method, the calculation precision is higher, and the calculation efficiency is improved. And the control on the output power of each indoor light in the later period is facilitated.

Description

Technical Field

[0001] The present invention relates to the field of lamp control, in particular to an automatic dimming LED lamp control system. Background Art

[0002] Because the human eye takes time to adjust to changes in light intensity (such as pupil contraction / dilation), frequent or drastic brightness fluctuations can cause visual fatigue (such as the discomfort when switching from a bright lighting environment to a dim lighting environment). In addition, when the brightness difference between natural light and artificial light sources is too large, glare or strong contrast may occur, affecting visual clarity. Therefore, it is very necessary to adjust the indoor lighting brightness according to the actual environment.

[0003] Common control methods only control the brightness of LED lights based on brightness detection results, without considering the influence of natural light and the impact of indoor obstructions on the brightness of light at different locations. Therefore, it is impossible to accurately ensure that each location is at the appropriate brightness. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides an automatic dimming LED lamp control system, which solves the technical problems in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: An automatic dimming LED light control system includes a photosensitive control module, a central computing module and a light control module; The light-sensitive control module is used to set a brightness threshold and determine whether the indoor brightness is higher than the brightness threshold; if so, the process ends; if not, the central computing module is turned on; The central computing module includes an information acquisition unit, a brightness calculation unit and a brightness correction unit; The information acquisition unit is used to obtain the first working information of the target site in real time; the brightness calculation unit is used to calculate the first brightness of each position of the target site according to the first working information. The brightness correction unit is used to adjust the first brightness Correction to generate the second brightness ; The lighting control module is used to adjust the brightness according to the second Control the output power of indoor light sources.

[0006] Furthermore, the first working information includes the shape, size, window position, window size, indoor light source position, indoor light source output power, obstruction size, obstruction position, sunlight angle and sunlight brightness of the target location.

[0007] Further, the first brightness is calculated The steps are as follows: S11. Construct a site plan map based on the first work information, using the center point of the site plan map as the origin O and establishing a three-dimensional coordinate system with the east-west direction, the north-south direction, and the vertical direction of the geographical location as the x-axis, the y-axis, and the z-axis, respectively; S12. Define the side length, then divide the 3D coordinate system into several cubic grids, and mark the coordinate position of each grid point, indoor light source, window, wall, and obstruction in the 3D coordinate system; S13: Calculate the first brightness of each grid point in the three-dimensional coordinate system according to the first working information. .

[0008] Furthermore, in step S13, the following steps are specifically included: S131. Obtain the materials of the window, coating layer, and obstruction, and calculate the light transmission attenuation coefficient based on them , and its calculation formula is: ; in, ; Where, Indicates the light transmittance of the window; Indicates the light transmittance of the glass substrate; Indicates the transmittance of the coating layer; represents the distance attenuation coefficient; represents the attenuation adjustment coefficient; Indicates the straight-line distance from the grid point to the window; represents the incident angle attenuation coefficient; express; represents the attenuation coefficient of the obstruction; represents the number of occluders between the window and the grid point; represents the shading rate of the kth occluder; is an indicator function, which is 1 when the natural light intersects the kth occluder, and 0 otherwise; S132, according to the light transmission attenuation coefficient Calculate the first contribution of natural light to each grid point , and its calculation formula is: ; Where, Indicates the brightness of sunlight at the corresponding time; represents the incident angle of sunlight; S133: Calculate the second contribution brightness of each indoor light source to each grid point , and its calculation formula is: ; Where, Indicates the total number of indoor light sources; represents the output power of the jth indoor light source; Indicates the light efficiency coefficient of indoor light sources; represents the straight-line distance from the i-th grid point to the j-th indoor light source; represents the incident angle of the j-th indoor light source to the i-th grid point; S134: According to the first contribution brightness and the second contribution brightness Calculating occluder attenuation , occluder attenuation It is used to express the influence of the occlusion on the brightness of each grid point. The calculation formula is: ; Where, Represents the total number of obstacles between the grid point and all indoor light sources; is the indicator function; S135: According to the first contribution brightness , the second contribution brightness and occluder attenuation Calculate the first brightness .

[0009] Furthermore, in step S135, the first brightness The calculation formula is: ; Where, Indicates the first brightness of the i-th grid point.

[0010] Furthermore, for the first brightness The specific steps for calibration are as follows: S21, obtaining the second working information of each indoor light source, the second working information including the usage time , output power , operating temperature and switching times ; S22. Calculate independent aging parameters based on the second working information , independent aging parameters Including time aging parameters , power aging parameters , temperature aging parameters and switching times aging parameters ; S23. Calculate coupling aging parameters based on the second working information , coupled aging parameters Including time-temperature aging parameters , power-temperature aging parameters , time-power aging parameters , Switching times-temperature aging parameters , Power-switching times aging parameters and time-switching number aging parameters ; S24, according to independent aging parameters and coupled aging parameters Calculation of comprehensive aging factor , and its calculation formula is: ; Where, Used to reflect the aging degree of indoor light sources; S25, based on the comprehensive aging factor For the first brightness Correction to generate the second brightness , and its calculation formula is: ; Where, Represents the brightness of the i-th grid point after correction.

[0011] Furthermore, in step S22, the time aging parameter The calculation formula is: ; Where, represents the time-based aging coefficient; Power aging parameters The calculation formula is: ; Where, Indicates the power base aging factor; Indicates the rated initial power of the indoor light source; represents the power nonlinear index; Temperature aging parameters The calculation formula is: ; Where, Indicates the temperature-based aging coefficient; express function; represents the temperature acceleration factor; Indicates the reference temperature; Switching times aging parameters The calculation formula is: ; Where, Indicates the basic aging parameter based on the number of switching times.

[0012] Further, in step S23, the time-temperature aging parameter The calculation formula is: ; Where, represents the time-temperature coupling coefficient; Power-temperature aging parameters The calculation formula is: ;

[0013] Where, represents the power-temperature coupling coefficient; Time-power aging parameters The calculation formula is: ; Where, represents the time-power coupling coefficient; express Function; switching times-temperature aging parameters The calculation formula is: ; Where, Indicates the switching frequency-temperature coupling coefficient; represents the temperature fluctuation amplitude of the jth indoor light source when it is turned on or off; Power-switching times aging parameters The calculation formula is: ; Where, It represents the power-switching times coupling coefficient; Time-switching times aging parameter The calculation formula is: ; Where, Represents the time-switching number coupling coefficient.

[0014] Furthermore, the specific steps for controlling the output power of the indoor light source are: S31. Preset a standard height and mark grid points below the preset height as spare grid points; S32, preset target brightness , calculate the second brightness of each spare grid point and target brightness Brightness difference , and its calculation formula is: ; S33, calculate the brightness contribution weight of each indoor light source to each spare grid point , and its calculation formula is: ; Where, represents the incident angle from the jth indoor light source to the ith spare grid point; represents the distance from the jth indoor light source to the ith spare grid point; S34, according to the brightness difference and brightness contribution weight Calculate the additional brightness contribution of each indoor light source , and its calculation formula is: ; S35, based on additional brightness contribution Calculate the exact output power of each indoor light source , and its calculation formula is: ; Where, Indicates the current output power of the jth indoor light source; S36, output power is determined according to Control the output power of indoor light sources.

[0015] Compared with the prior art, the present invention provides an automatic dimming LED lamp control system with the following beneficial effects: 1. When calculating the actual brightness of each position in the target location, the present invention takes into account the influence of natural light and indoor artificial light sources. In addition, the influence of the light blocking effect of indoor obstructions on the brightness of each position is also taken into account. Therefore, compared with the common brightness calculation method, the calculation accuracy is higher, which is conducive to the subsequent control of the output power of each indoor light based on it.

[0016] 2. When controlling the brightness of LED lamps, the present invention fully considers the mutual influence between outdoor natural light, indoor obstructions and multiple LED lamps. Compared with the common control method that only considers a single light source or simple distance attenuation, the brightness of different positions in the target place can be adjusted separately, so that each position is at a brightness suitable for the human eye to avoid causing discomfort to the human eye.

[0017] 3. When correcting the brightness of each grid point, the present invention not only considers the individual effects of usage time, output power, operating temperature and number of switches on the aging degree of the LED lamp, but also considers the comprehensive effects of these factors on the aging degree of the LED lamp. Therefore, compared with the traditional calculation method, the calculation accuracy of the aging degree of the LED lamp is higher, so as to facilitate the precise control of the output power of each LED lamp in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 Schematic diagram of an automatic dimming LED lamp control system of the present invention. DETAILED DESCRIPTION

[0019] To make the above-mentioned objectives, features, and advantages of the present invention more clearly understood, the present invention is further described below in detail with reference to the accompanying drawings and specific embodiments. This will enable a full understanding of how this application uses technical means to solve technical problems and achieve technical effects, and to implement the invention accordingly.

[0020] Those skilled in the art will appreciate that all or part of the steps in the following embodiments can be accomplished by instructing related hardware through a program. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0021] Since it takes time for the human eye to adjust to changes in light intensity (such as pupil contraction / dilation), frequent or drastic brightness fluctuations can cause visual fatigue (such as the discomfort when switching from a bright ambient light environment to a dim light environment). In addition, when the brightness difference between natural light and artificial light sources is too large, glare or strong contrast may occur, affecting visual clarity. Constant illumination can even out light distribution. Therefore, in mixed lighting scenes (such as classrooms, offices, etc.), in order to ensure visual comfort, functionality and energy efficiency, it is necessary to maintain constant illumination. However, the illumination in these scenes is not constant and will be affected by external light and surrounding light. For this reason, Figure 1 As shown, the present invention proposes an automatic dimming LED lamp control system, comprising: a photosensitive control module, a central computing module and a lighting control module; The photosensitive control module is used to set a brightness threshold and determine whether the indoor brightness is higher than the brightness threshold; if so, the process ends; if not, the central computing module is turned on; specifically, the photosensitive control module is constructed based on an illuminance meter with a sunshade to obtain in real time whether the brightness in the target place is lower than the brightness threshold. It should be noted that the brightness threshold is a custom parameter used to represent a brightness threshold suitable for the human eye.

[0022] The central computing module includes an information acquisition unit, a brightness calculation unit and a brightness correction unit; Among them, the information acquisition unit is used to obtain the first working information of the target site in real time; specifically, since the light at each position in the target site is affected by multiple factors, such as: different distances from the window, resulting in different brightness of received natural light; obstruction of objects, resulting in different brightness; different distances from indoor light sources, resulting in different brightness, etc., therefore, it is necessary to analyze the brightness of each position in the target site based on the above situation. For this purpose, the first working information includes the shape, size, window position, window size, indoor light source position, indoor light source output power, obstruction size, obstruction position, sunlight angle and sunlight brightness of the target site; specifically, the shape, size, window position, window size, indoor light source position, indoor light source output power, obstruction size and obstruction position of the target site can all be extracted and obtained according to the design drawing of the target site, and the sunlight angle and sunlight brightness are obtained by detection by photodiodes and illuminometers.

[0023] The brightness calculation unit is used to calculate the first brightness of each position of the target location according to the first working information Specifically, since the first working information represents the brightness of the center of the target place, and the external light will cause different lighting conditions at different locations in the target place, especially before dark, it is necessary to calculate the brightness of each location in the target place. To this end, the first brightness is calculated. The steps are as follows: S11. Construct a site plan map based on the first work information, using the center point of the site plan map as the origin O and establishing a three-dimensional coordinate system with the east-west direction, the north-south direction, and the vertical direction of the geographical location as the x-axis, the y-axis, and the z-axis, respectively; S12. Define the side lengths, then divide the 3D coordinate system into several cubic grids, and mark the coordinate positions of each grid point, indoor light source, window, wall, and obstruction in the 3D coordinate system. Specifically, determine the points to be calculated based on the design drawings of the target location, such as the eight corner points within the target location to determine the location of the target location; the four corner points of the window to determine the location of the window; and the center point of the indoor light source to determine the location of the indoor light source. It should be noted that the calculation method for each grid point uses the Euclidean distance algorithm. S13: Calculate the first brightness of each grid point in the three-dimensional coordinate system according to the first working information. Specifically, in addition to the factors that affect the brightness of each position mentioned above, there is also the factor of light reflection that affects the brightness of each position. Therefore, in step S13, the following steps are specifically included: S131. Obtain the materials of the window, coating layer, and obstruction, and calculate the light transmission attenuation coefficient based on them , and its calculation formula is: ; in, ; Where, Indicates the light transmittance of the window; Indicates the light transmittance of the glass substrate; Indicates the transmittance of the coating layer; represents the distance attenuation coefficient; represents the attenuation adjustment coefficient; Indicates the straight-line distance from the grid point to the window; represents the incident angle attenuation coefficient; express; represents the attenuation coefficient of the obstruction; represents the number of occluders between the window and the grid point; represents the shading rate of the kth occluder; is an indicator function, which is 1 when the natural light intersects the kth occluder, and 0 otherwise; in the present invention, The value of is determined by the material of the window glass. If the window is made of ordinary glass, then is 0.9; The value of is determined by the material of the coating layer. If there is no coating, then is 1; is 0.2; The value of is determined by the material of the obstruction, and the value of the blinds is 0.5; it should be noted that when When it is less than 0, it is set to 0; S132, according to the light transmission attenuation coefficient Calculate the first contribution of natural light to each grid point , and its calculation formula is: ; Where, Indicates the brightness of sunlight at the corresponding time; Indicates the angle of incidence of sunlight; specifically, Represents the angle between sunlight (i.e. natural light) and the window normal; it should be noted that, The calculation formula is: ; in, Indicates the direction of sunlight; ; represents the window normal vector; S133: Calculate the second contribution brightness of each indoor light source to each grid point , and its calculation formula is: ; Where, Indicates the total number of indoor light sources; represents the output power of the jth indoor light source; Indicates the light efficiency coefficient of indoor light sources; represents the straight-line distance from the i-th grid point to the j-th indoor light source; represents the incident angle of the j-th indoor light source to the i-th grid point; in the present invention, Obtained through the marked parameters of the indoor light source manufacturer; the distance between the indoor light source and the coordinate position of the grid point is calculated using the Euclidean distance algorithm ; The calculation formula is: ; in, and Represent the coordinate positions of the grid points and indoor light sources respectively; Indicates the direction of light source; S134: According to the first contribution brightness and the second contribution brightness Calculating occluder attenuation , occluder attenuation It is used to express the influence of the occlusion on the brightness of each grid point. The calculation formula is: ; Where, Represents the total number of obstacles between the grid point and all indoor light sources; is an indicator function; in the present invention, Indicates that the path between the grid point and the indoor light source is blocked by an obstacle; This means that there are no obstacles blocking the path between the grid point and the indoor light source; S135: According to the first contribution brightness , the second contribution brightness and occluder attenuation Calculate the first brightness Specifically, in step S135, the first brightness The calculation formula is: ; Where, Indicates the first brightness of the i-th grid point.

[0024] When calculating the actual brightness of each position in the target place, the present invention takes into account the influence of natural light and indoor artificial light sources. In addition, the influence of the blocking effect of indoor obstructions on the brightness of each position is also taken into account. Therefore, compared with the common brightness calculation method, the calculation accuracy is higher, which is conducive to the later control of the output power of each indoor light based on it.

[0025] The brightness correction unit is used to adjust the first brightness Correction to generate the second brightness Specifically, the brightness of LED lamps is not only affected by the input power, but also by the degree of aging. The higher the degree of aging of LED lamps, the lower their brightness at the same input power. In addition, the aging of LED lamps is affected by the combined effects of usage time, output power, operating temperature and number of switches. The common calculation method for aging of LED lamps does not take the combined effects of the above factors into account, so the calculation accuracy is low. Therefore, for the first brightness The specific steps for calibration are as follows: S21, obtaining the second working information of each indoor light source, the second working information including the usage time , output power , operating temperature and switching times ; S22. Calculate independent aging parameters based on the second working information , independent aging parameters Including time aging parameters , power aging parameters , temperature aging parameters and switching times aging parameters Specifically, in step S22, the time aging parameter The calculation formula is: ; Where, represents the time-based aging coefficient; in the present invention, is 0.02; Power aging parameters The calculation formula is: ; Where, Indicates the power base aging factor; Indicates the rated initial power of the indoor light source; Represents the power nonlinear index; in the present invention, is 0.1; 20 watts; is 1.2; Temperature aging parameters The calculation formula is: ; Where, Indicates the temperature-based aging coefficient; express function; represents the temperature acceleration factor; represents the reference temperature; in the present invention, is 0.004; is 0.06; is 25 degrees Celsius; Switching times aging parameters The calculation formula is: ; Where, Indicates the basic aging parameter of the number of switching times; in the present invention, It is 0.0015.

[0026] S23. Calculate coupling aging parameters based on the second working information , coupled aging parameters Including time-temperature aging parameters , power-temperature aging parameters , time-power aging parameters , Switching times-temperature aging parameters , Power-switching times aging parameters and time-switching number aging parameters Specifically, the aging degree of LED lamps is not only affected by the use time, output power, operating temperature and number of switches, but also by the combined influence of multiple parameters. For example, high temperature accelerates the aging of materials (such as phosphor attenuation), resulting in an enhanced cumulative effect of time; high power leads to an increase in operating temperature, further exacerbating light decay; long-term high-power operation leads to cumulative damage to the driving circuit and chip, etc. Therefore, in step S23, the time-temperature aging parameter The calculation formula is: ; Where, represents the time-temperature coupling coefficient; in the present invention, is 0.0007; Power-temperature aging parameters The calculation formula is: ; Where, represents the power-temperature coupling coefficient; in the present invention, is 0.02; Time-power aging parameters The calculation formula is: ; Where, represents the time-power coupling coefficient; express function; in the present invention, is 0.005; Switching times-temperature aging parameters The calculation formula is: ; Where, Indicates the switching frequency-temperature coupling coefficient; represents the temperature fluctuation amplitude of the j-th indoor light source when it is switched on and off; in the present invention, is 0.0004; Power-switching times aging parameters The calculation formula is: ; Where, represents the power-switching times coupling coefficient; in the present invention, is 0.0008; Time-switching times aging parameter The calculation formula is: ; Where, represents the time-switching number coupling coefficient; in the present invention, is 0.0003; S24, according to independent aging parameters and coupled aging parameters Calculation of comprehensive aging factor , and its calculation formula is: ; Where, Used to reflect the aging degree of indoor light sources; S25, based on the comprehensive aging factor For the first brightness Correction to generate the second brightness , and its calculation formula is: ; Where, Represents the brightness of the i-th grid point after correction.

[0027] When correcting the brightness of each grid point, the present invention not only considers the individual effects of usage time, output power, operating temperature and number of switches on the aging degree of the LED lamp, but also considers the combined effect of these factors on the aging degree of the LED lamp. Therefore, compared with traditional calculation methods, the calculation accuracy of the aging degree of the LED lamp is higher, so as to facilitate the precise control of the output power of each LED lamp in the later stage.

[0028] The lighting control module is used to adjust the brightness according to the second Control the output power of the indoor light source. Specifically, due to the influence of external natural light and obstructions, the brightness at different locations will be different. This requires the brightness of each LED lamp to be controlled separately. To this end, the specific steps for controlling the output power of the indoor light source are as follows: S31. Preset a standard height and mark grid points below the preset height as spare grid points; S32, preset target brightness , calculate the second brightness of each spare grid point and target brightness Brightness difference , and its calculation formula is: ; S33, calculate the brightness contribution weight of each indoor light source to each spare grid point , and its calculation formula is: ; Where, represents the incident angle from the jth indoor light source to the ith spare grid point; represents the distance from the jth indoor light source to the ith spare grid point; S34, according to the brightness difference and brightness contribution weight Calculate the additional brightness contribution of each indoor light source , and its calculation formula is: ; S35, based on additional brightness contribution Calculate the exact output power of each indoor light source , and its calculation formula is: ; Where, Indicates the current output power of the jth indoor light source; S36, output power is determined according to Control the output power of indoor light sources.

[0029] When controlling the brightness of LED lamps, the present invention fully considers the mutual influence between outdoor natural light, indoor obstructions and multiple LED lamps. Compared with the common control method that only considers a single light source or simple distance attenuation, the brightness of different positions in the target place can be adjusted separately, so that each position is at a brightness suitable for the human eye to avoid causing discomfort to the human eye.

[0030] The above embodiments provide a detailed introduction to the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas. At the same time, for those skilled in the art, according to the ideas of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. An automatic dimming LED lamp control system, characterized in that: Including photosensitive control module, central computing module and lighting control module; The light-sensitive control module is used to set a brightness threshold and determine whether the indoor brightness is higher than the brightness threshold; if so, the process ends; if not, the central computing module is turned on; The central computing module includes an information acquisition unit, a brightness calculation unit and a brightness correction unit; The information acquisition unit is used to obtain the first working information of the target site in real time; the brightness calculation unit is used to calculate the first brightness of each position of the target site according to the first working information. The brightness correction unit is used to adjust the first brightness Correction to generate the second brightness ; The lighting control module is used to adjust the brightness according to the second Control the output power of indoor light sources.

2. The LED light control system according to claim 1, characterized in that: The first working information includes the shape, size, window position, window size, indoor light source position, indoor light source output power, obstruction size, obstruction position, sunlight angle and sunlight brightness of the target location.

3. The LED light control system according to claim 1, characterized in that: Calculate the first brightness The steps are as follows: S11. Construct a site plan map based on the first work information, using the center point of the site plan map as the origin 0, and constructing a three-dimensional coordinate system with the east-west direction, north-south direction, and vertical direction of the geographical location as the x-axis, y-axis, and z-axis, respectively; S12. Define the side length, then divide the 3D coordinate system into several cubic grids, and mark the coordinate position of each grid point, indoor light source, window, wall, and obstruction in the 3D coordinate system; S13: Calculate the first brightness of each grid point in the three-dimensional coordinate system according to the first working information. .

4. The LED lamp control system according to claim 3, characterized in that: In step S13, the following steps are specifically included: S131. Obtain the materials of the window, coating layer, and obstruction, and calculate the light transmission attenuation coefficient based on them , and its calculation formula is: ； in, ； Where, Indicates the light transmittance of the window; Indicates the light transmittance of the glass substrate; Indicates the transmittance of the coating layer; represents the distance attenuation coefficient; represents the attenuation adjustment coefficient; Indicates the straight-line distance from the grid point to the window; represents the incident angle attenuation coefficient; express; represents the attenuation coefficient of the obstruction; represents the number of occluders between the window and the grid point; represents the shading rate of the kth occluder; is an indicator function, which is 1 when the natural light intersects the kth occluder, and 0 otherwise; S132, according to the light transmission attenuation coefficient Calculate the first contribution of natural light to each grid point , and its calculation formula is: ； Where, Indicates the brightness of sunlight at the corresponding time; represents the incident angle of sunlight; S133: Calculate the second contribution brightness of each indoor light source to each grid point , and its calculation formula is: ； Where, Indicates the total number of indoor light sources; represents the output power of the jth indoor light source; Indicates the light efficiency coefficient of indoor light sources; represents the straight-line distance from the i-th grid point to the j-th indoor light source; represents the incident angle of the j-th indoor light source to the i-th grid point; S134: According to the first contribution brightness and the second contribution brightness Calculating occluder attenuation , occluder attenuation It is used to express the influence of the occlusion on the brightness of each grid point. The calculation formula is: ； Where, Represents the total number of obstacles between the grid point and all indoor light sources; is the indicator function; S135: According to the first contribution brightness , the second contribution brightness and occluder attenuation Calculate the first brightness .

5. The LED light control system according to claim 4, characterized in that: In step S135, the first brightness The calculation formula is: ； Where, Indicates the first brightness of the i-th grid point.

6. The LED light control system according to claim 1, characterized in that: For the first brightness The specific steps for calibration are as follows: S21, obtaining the second working information of each indoor light source, the second working information including the usage time , output power , operating temperature and switching times ; S22. Calculate independent aging parameters based on the second working information , independent aging parameters Including time aging parameters , power aging parameters , temperature aging parameters and switching times aging parameters ; S23. Calculate coupling aging parameters based on the second working information , coupled aging parameters Including time-temperature aging parameters , power-temperature aging parameters , time-power aging parameters , Switching times-temperature aging parameters , Power-switching times aging parameters and time-switching number aging parameters ; S24, according to independent aging parameters and coupled aging parameters Calculation of comprehensive aging factor , and its calculation formula is: ； Where, Used to reflect the aging degree of indoor light sources; S25, based on the comprehensive aging factor For the first brightness Correction to generate the second brightness , and its calculation formula is: ； Where, Represents the brightness of the i-th grid point after correction.

7. The LED light control system according to claim 6, characterized in that: In step S22, the time aging parameter The calculation formula is: ； Where, represents the time-based aging coefficient; Power aging parameters The calculation formula is: ； Where, Indicates the power base aging factor; Indicates the rated initial power of the indoor light source; represents the power nonlinear index; Temperature aging parameters The calculation formula is: ； Where, Indicates the temperature-based aging coefficient; express function; represents the temperature acceleration factor; Indicates the reference temperature; Switching times aging parameters The calculation formula is: ； Where, Indicates the basic aging parameter based on the number of switching times.

8. The LED lamp control system according to claim 6, characterized in that: In step S23, the time-temperature aging parameters The calculation formula is: ； Where, represents the time-temperature coupling coefficient; Power-temperature aging parameters The calculation formula is: ； Where, represents the power-temperature coupling coefficient; Time-power aging parameters The calculation formula is: ； Where, represents the time-power coupling coefficient; express Function; switching times-temperature aging parameters The calculation formula is: ； Where, Indicates the switching frequency-temperature coupling coefficient; represents the temperature fluctuation amplitude of the jth indoor light source when it is turned on or off; Power-switching times aging parameters The calculation formula is: ； Where, It represents the power-switching times coupling coefficient; Time-switching times aging parameter The calculation formula is: ； Where, Represents the time-switching number coupling coefficient.

9. The LED light control system according to claim 1, characterized in that: The specific steps for controlling the output power of indoor light sources are: S31. Preset a standard height and mark grid points below the preset height as spare grid points; S32, preset target brightness , calculate the second brightness of each spare grid point and target brightness Brightness difference , and its calculation formula is: ； S33, calculate the brightness contribution weight of each indoor light source to each spare grid point , and its calculation formula is: ； Where, represents the incident angle from the jth indoor light source to the ith spare grid point; represents the distance from the jth indoor light source to the ith spare grid point; S34, according to the brightness difference and brightness contribution weight Calculate the additional brightness contribution of each indoor light source , and its calculation formula is: ； S35, based on additional brightness contribution Calculate the exact output power of each indoor light source , and its calculation formula is: ； Where, Indicates the current output power of the jth indoor light source; S36, output power is determined according to Control the output power of indoor light sources.

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