An LED display brightness adjustment method and system

Abstract

The present invention discloses a method and system for adjusting the brightness of an LED display screen, which relates to the technical field of LED display. Through precise brightness data acquisition, processing, and adjustment mechanisms, the accuracy of the display effect is greatly improved. The brightness data acquisition module monitors the ambient light intensity and the current brightness of the LED display screen in real time, which provides a basis for subsequent data processing and brightness adjustment. The data preprocessing module corrects and filters these data to ensure the accuracy and reliability of the data. The brightness adjustment algorithm module calculates the target brightness L target , and dynamically adjusts to calculate the actual brightness L actual . Combining the color temperature change and non-linear response of the display screen, it outputs the non-linear adjusted brightness L adjusted . This precise adjustment ability ensures that the brightness of the display screen is always suitable under different lighting conditions, avoiding the situations of too strong or too weak brightness.

Description

Technical Field

[0001] The present invention relates to the technical field of LED display, and particularly to a method and system for adjusting the brightness of an LED display screen. Background Art

[0002] In modern technology, display technology is a crucial part of electronic products, covering a wide range of applications from mobile phones and computer monitors to large advertising screens. The brightness adjustment system of the display screen plays a key role in this field, ensuring that the display device can provide a clear view and a comfortable user experience under various lighting conditions. Specifically for LED display screens, due to their high brightness, low power consumption, and long lifespan, they have become the mainstream choice in display technology. With the continuous expansion of the application of LED display screens and the increasing diversification of ambient light conditions, how to accurately adjust the brightness to adapt to different ambient light conditions has become an urgent problem to be solved.

[0003] In the Chinese invention application with the application publication number CN104992664A, a method and device for adjusting the brightness of an LED display screen and an LED display screen are disclosed. The method is characterized in that it uses three-dimensional visualization to construct a three-dimensional model of the LED display screen and the surrounding buildings; dynamically simulates the solar illumination environment in real time; uses projection transformation to obtain the display screen modules in the sunny area and the display screen modules in the shady area in the three-dimensional model; adjusts the real-time brightness of the display screen modules in the sunny area to a preset sunny brightness value, and adjusts the real-time brightness of the display screen modules in the shady area to a preset shady brightness value. On the premise that the LED display screen is in normal use, the present invention does not require an internal brightness sensor array and does not require manual brightness adjustment, thus improving the efficiency of brightness adjustment and enabling the method for adjusting the brightness of the LED display screen to be widely promoted and used.

[0004] Combined with the existing technology, the above application still has the following deficiencies:

[0005] Most traditional LED display screen brightness adjustment technologies rely on static brightness settings or simple automatic adjustment methods, and these methods often cannot adapt to dynamic ambient light conditions in real time. The traditional system may have the following deficiencies: First, when the ambient light changes, the brightness adjustment of the display screen is not sensitive enough, resulting in poor display effects under strong light or weak light conditions; second, there is a lack of effective noise filtering and non-linear error correction, affecting the accuracy of brightness adjustment; third, the color temperature change and non-linear response of the display screen are not fully considered, which may lead to inconsistent brightness adjustment or unnatural display. These shortcomings may cause the visual experience of users to be unstable in different environments and even affect the service life of the display screen. Summary of the Invention

[0006] In view of the deficiencies of the prior art, the present invention provides a method and system for adjusting the brightness of an LED display screen, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: It includes a brightness data acquisition module, a data preprocessing module, a brightness adjustment algorithm module, a brightness compensation analysis module, and a brightness adjustment optimization module;

[0008] The brightness data acquisition module is used to set up a sensor group to collect the brightness data of the LED display screen in real time, encapsulate the brightness data, and obtain a brightness data packet to send to the data preprocessing module;

[0009] The data preprocessing module receives the obtained brightness data packet in real time, decrypts the brightness data packet to obtain the brightness data, preprocesses it to obtain a corrected data set, and stores the corrected data set and the brightness data in the database;

[0010] The brightness adjustment algorithm module is used to extract the brightness feature set in real time for calculation to obtain the target brightness L target , and perform dynamic adjustment calculation to obtain the actual brightness L actual , and then based on the target brightness L target , combined with the color temperature change and non-linear response of the display screen, perform output non-linear adjustment of the brightness L adjusted ;

[0011] The brightness compensation analysis module is used to perform comprehensive calculation based on the output non-linear adjustment brightness L adjusted , combined with the corrected data set to obtain the final brightness value L final , and perform a preliminary comparison and evaluation with the preset first brightness threshold L1 and second brightness threshold L2 and the obtained final brightness value L final to analyze the current brightness compensation situation of the LED display screen;

[0012] When the brightness compensation analysis module preliminarily evaluates that the brightness compensation is abnormal, the brightness adjustment optimization module is used to further construct a brightness optimization formula, calculate to obtain the optimized brightness L opt , and recalculate to output the optimized brightness value L2 final , and perform a secondary comparison and evaluation with the first brightness threshold L1 and the second brightness threshold L2 to analyze the brightness optimization situation of the current LED display screen after optimization, and generate an iterative optimization mechanism.

[0013] Preferably, the brightness data acquisition module includes a data acquisition unit and a data transmission unit;

[0014] The data acquisition unit installs ambient light sensors around the LED display screen and installs a current display screen brightness sensor inside the LED display screen at the same time to collect the brightness data of the LED display screen in real time;

[0015] The brightness data includes the ambient light intensity L env , the current display brightness L current , the non - linear error E of the ambient light sensor env and the noise level N of the current display brightness sensor display ;

[0016] The data transmission unit is used to define the brightness data packet format for the acquired brightness data. The brightness data packet format includes a packet header, a sensor ID, a timestamp, data values, a checksum, and a packet tail, encapsulate to obtain a brightness data packet, and then send the encapsulated brightness data packet to the data pre - processing module using the LoRa protocol.

[0017] Preferably, the data pre - processing module includes a processing unit and a storage unit;

[0018] The processing unit includes a receiving unit, a data correction unit, and a data filtering unit;

[0019] The receiving unit is used to receive the brightness data packet in real - time, identify and verify the packet header and packet tail, parse according to the defined brightness data packet format, verify the integrity of the brightness data packet, and extract the brightness data;

[0020] The data correction unit is used to perform correction according to the non - linear error E of the ambient light sensor env to obtain the corrected ambient light intensity , where k env represents the error correction coefficient;

[0021] The data filtering unit is used to calculate the filtered brightness value according to the noise level N of the current display brightness sensor display , where represents the noise filtering coefficient; represents the noise filtering coefficient;

[0022] Then, the obtained corrected ambient light intensity and the filtered brightness value are summarized to obtain a corrected data set;

[0023] The storage unit is used to build a NoSQL database, construct an input interface and an output interface through an API application, and store the obtained corrected data set and brightness data in the NoSQL database through the input interface.

[0024] Preferably, the brightness adjustment algorithm module includes a target brightness calculation unit, a brightness dynamic adjustment unit, and a non - linear adjustment unit;

[0025] The target brightness calculation unit extracts the corrected ambient light intensity in the correction data set and the brightness data in real time through the output interface of the database and the current display brightness L current , and calculates and obtains the target brightness L target ;

[0026] The target brightness L target is calculated and obtained through the following algorithm formula;

[0027] ;

[0028] In the formula, represents the brightness compensation coefficient, L ref represents the ambient light reference value, L max represents the brightness peak value.

[0029] Preferably, the brightness dynamic adjustment unit calculates and obtains the actual brightness L target by combining the target brightness L current and the current display brightness L actual in a time-weighted manner, and performs smooth adjustment on the brightness of the LED display screen;

[0030] The actual brightness L actual is calculated and obtained through the following adjustment formula;

[0031] ;

[0032] In the formula, t represents the adjustment time, and T represents the peak adjustment time.

[0033] Preferably, the non-linear adjustment unit is used to extract the filtered brightness value and the target brightness L target , and corrects the target brightness L target through an adjustment coefficient to obtain the non-linear adjustment brightness L adjusted ;

[0034] The non-linear adjustment brightness L adjusted is calculated and obtained through the following adjustment formula;

[0035] ;

[0036] In the formula, represents the brightness non-linear coefficient of the display screen, represents the color temperature adjustment coefficient.

[0037] Preferably, the brightness compensation analysis module includes a brightness output unit and a brightness compensation evaluation unit;

[0038] The brightness output unit is used to rely on the non-linear adjustment brightness Ladjusted to comprehensively adjust and output the final brightness value L of the LED display screen final ;

[0039] The final brightness value L final is obtained through the following adjustment formula;

[0040] ;

[0041] The brightness compensation evaluation unit conducts a preliminary comparison and evaluation on the preset first brightness threshold L1 and second brightness threshold L2 based on user requirements and the output final brightness value L final to analyze the current brightness compensation adjustment situation of the LED display screen;

[0042] When the final brightness value L final > the first brightness threshold L1, it indicates that there is an over-compensation anomaly in the current brightness of the LED display screen, and at this time, the brightness adjustment optimization module is executed;

[0043] When the second brightness threshold L2 ≤ the final brightness value L final ≤ the first brightness threshold L1, it indicates that the current brightness adjustment of the LED display screen is normal;

[0044] When the final brightness value L final < the first brightness threshold L2, it indicates that there is an under-compensation anomaly after the current brightness adjustment of the LED display screen, and at this time, the brightness adjustment optimization module is executed.

[0045] Preferably, the brightness adjustment optimization module includes an optimization unit and an optimization evaluation unit;

[0046] The optimization unit includes a brightness optimization unit and a secondary brightness value output unit;

[0047] The brightness optimization unit is used to construct a brightness optimization formula and output the optimized brightness L by setting optimization parameters for the final brightness value L final to perform brightness optimization; opt；

[0048] The optimized brightness L opt is calculated and output through the following optimization formula;

[0049] ;

[0050] In the formula, represents the optimization parameter, which is used to adjust the optimization amplitude, and the specific value is set by the user;

[0051] The secondary brightness value output unit is used to output the optimized brightness L after optimization opt, the corrected brightness value is adjusted and combined with the non - linear adjustment factor to optimize the output brightness value L2 final ;

[0052] The optimized brightness value L2 final is obtained by calculating through the following algorithm formula;

[0053] .

[0054] Preferably, the optimization evaluation unit is used to perform a secondary comparison and evaluation on the obtained optimized brightness value L2 final with the preset first brightness threshold L1 and second brightness threshold L2, analyze the brightness adjustment effect after optimization, and generate an iterative mechanism;

[0055] When the final brightness value L final > the first brightness threshold L1, it indicates that there is an over - compensation anomaly in the brightness optimization of the current LED display screen. At this time, the optimization iteration strategy is executed, and the optimization unit is executed twice;

[0056] When the second brightness threshold L2 ≤ the final brightness value L final ≤ the first brightness threshold L1, it indicates that the brightness adjustment is normal after the brightness optimization of the current LED display screen;

[0057] When the final brightness value L final < the first brightness threshold L2, it indicates that there is an under - compensation anomaly in the brightness optimization of the current LED display screen. At this time, the optimization iteration strategy is executed, and the optimization unit is executed twice;

[0058] After the optimization iteration strategy is executed three times, the iteration stops, and a prompt for maintenance is generated.

[0059] An LED display screen brightness adjustment method includes the following steps:

[0060] S1. Set up a sensor group to collect the brightness data of the LED display screen in real - time, encapsulate the brightness data, and obtain a brightness data packet to send to the data pre - processing module;

[0061] S2. By receiving the obtained brightness data packet in real - time, decrypt the brightness data packet to obtain the brightness data, perform pre - processing to obtain a corrected data set, and store the corrected data set and the brightness data in the database;

[0062] S3. Extract the brightness feature set in real - time for calculation to obtain the target brightness L target , and perform dynamic adjustment calculation to obtain the actual brightness L actual , and then based on the target brightness L target Combined with the color temperature change and non - linear response of the display screen, output the non - linear adjustment brightness L adjusted ;

[0063] S4. Nonlinear brightness adjustment L based on the output adjusted , combine and perform comprehensive calculations on the corrected dataset to obtain the final brightness value L final , and conduct a preliminary comparison and evaluation on the preset first brightness threshold L1 and second brightness threshold L2 and the obtained final brightness value L final , and analyze the current brightness compensation situation of the LED display screen;

[0064] S5. When the brightness compensation is abnormal in the preliminary evaluation, further construct a brightness optimization formula to calculate and obtain the optimized brightness L opt , and recalculate and output the optimized brightness value L2 final , and conduct a secondary comparison and evaluation with the first brightness threshold L1 and the second brightness threshold L2, analyze the optimized current brightness optimization situation of the LED display screen, and generate an iterative optimization mechanism.

[0065] The present invention provides a method and system for adjusting the brightness of an LED display screen. It has the following beneficial effects:

[0066] (1) Through precise brightness data acquisition, processing, and adjustment mechanisms, the system greatly improves the accuracy of the display effect. The brightness data acquisition module real-time monitors the ambient light intensity and the current brightness of the LED display screen, which provides a basis for subsequent data processing and brightness adjustment. The data preprocessing module corrects and filters these data to ensure the accuracy and reliability of the data. The brightness adjustment algorithm module calculates the target brightness L based on these accurate data target , and dynamically adjusts to calculate the actual brightness L actual , combines the color temperature change and non-linear response of the display screen to output the non-linear adjusted brightness L adjusted . This precise adjustment ability ensures that the brightness of the display screen is always suitable under different lighting conditions, avoids the situation of too strong or too weak brightness, ensures the clarity and readability of the displayed content, and thus significantly improves the user experience.

[0067] (2) The brightness compensation analysis module of the system, through comprehensive adjustment and calculation of the non-linear adjusted brightness L adjusted , obtains the final brightness value L final , and compares it with the preset first brightness threshold L1 and second brightness threshold L2, and can real-time monitor and analyze the brightness compensation situation. When detecting abnormal brightness compensation, the system can automatically trigger the brightness adjustment and optimization module to further optimize the brightness settings of the display screen. This abnormal detection and automatic optimization mechanism can effectively avoid the phenomenon of excessive or insufficient brightness, ensure that the display screen can maintain a stable display effect under various operating conditions, and improve the reliability and adaptability of the system.

[0068] (3) The system has an intelligent optimization and iteration mechanism. By constructing an optimization formula through the brightness optimization module, it further adjusts the final brightness value to generate the optimized brightness L opt , and recalculates and outputs the optimized brightness value L2 final . The system can perform a secondary comparison and evaluation based on the optimized brightness value L2 final with the set first brightness threshold L1 and second brightness threshold L2. When the optimized brightness value still does not meet the standard, the system will execute the optimization iteration strategy, with a maximum of three iterations. This intelligent optimization process can ensure that the brightness adjustment effect of the system reaches the optimal under complex conditions and provides maintenance prompts when necessary, further improving the intelligent level and maintenance efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 is a schematic flowchart of a brightness adjustment system for an LED display screen according to the present invention;

[0070] Figure 2 is a schematic diagram of the steps of a method for adjusting the brightness of an LED display screen according to the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0071] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0072] Embodiment 1

[0073] Please refer to Figure 1 , the present invention provides a brightness adjustment system for an LED display screen. To achieve the above objectives, the present invention is realized through the following technical solutions: including a brightness data acquisition module, a data preprocessing module, a brightness adjustment algorithm module, a brightness compensation analysis module, and a brightness adjustment optimization module;

[0074] The brightness data acquisition module is used to set up a sensor group to collect the brightness data of the LED display screen in real time, encapsulate the brightness data, and obtain a brightness data packet to send it to the data preprocessing module;

[0075] The data preprocessing module receives the obtained brightness data packet in real time, decrypts the brightness data packet to obtain the brightness data, preprocesses it to obtain a corrected data set, and stores the corrected data set and the brightness data in the database;

[0076] The brightness adjustment algorithm module is used to extract the brightness feature set in real time for calculation to obtain the target brightness L target, and dynamically adjust the calculation to obtain the actual brightness L actual , and then according to the target brightness L target Combine the color temperature change and nonlinear response of the display screen to adjust the output brightness L nonlinearly. adjusted ;

[0077] The brightness compensation analysis module is used to adjust the brightness L based on the nonlinearity of the output adjusted , the corrected data set is combined for comprehensive calculation to obtain the final brightness value L final , the first brightness threshold L1 and the second brightness threshold L2 are preset and the final brightness value L final Conduct preliminary comparative evaluation and analyze the current brightness compensation of LED display screens;

[0078] The brightness adjustment optimization module is used to further construct a brightness optimization formula when the brightness compensation is initially evaluated to obtain the optimized brightness L opt , and recalculate the output optimized brightness value L2 final And perform secondary comparative evaluation with the first brightness threshold L1 and the second brightness threshold L2, analyze the brightness optimization of the optimized LED current display screen, and generate an iterative optimization mechanism.

[0079] In this embodiment, the system ensures accurate monitoring and data transmission of the brightness of the LED display screen through real-time sensor data collection and data encapsulation through the brightness data acquisition module. This module can efficiently acquire and transmit ambient light intensity and display screen brightness data, laying a solid foundation for subsequent processing and adjustment. The data preprocessing module eliminates the influence of sensor errors and noise by unpacking and correcting data in real time, generates an accurate correction data set, and ensures the accuracy and reliability of subsequent brightness adjustment. Secondly, the brightness adjustment algorithm module extracts the brightness feature set in real time and calculates the target brightness L target Based on the actual brightness L, the actual brightness L is calculated by dynamic adjustment actual , combined with the color temperature change of the display and the nonlinear response, the nonlinear adjustment brightness L is output adjusted . This module enables the display brightness to be accurately adjusted under various environmental conditions, overcoming the shortcomings of inflexible and poor adaptability of brightness adjustment in traditional technologies, thereby improving the stability of the display effect and the visual experience. Finally, the brightness compensation analysis module and the brightness adjustment optimization module further improve the accuracy of brightness adjustment through comprehensive calculation and optimization iteration mechanism. When abnormal brightness compensation is detected, the system can automatically optimize and adjust, and further correct the brightness value through secondary comparison evaluation. This intelligent optimization and iteration mechanism significantly improves the adaptability and stability of the system.

[0080] Example 2

[0081] This embodiment is an explanatory description carried out in Embodiment 1. Please refer to Figure 1 , specifically: The brightness data acquisition module includes a data acquisition unit and a data transmission unit;

[0082] The data acquisition unit installs ambient light sensors around the LED display screen and installs a current display screen brightness sensor inside the LED display screen at the same time, and real-time collects the brightness data of the LED display screen;

[0083] The brightness data includes the ambient light intensity L env , the current display screen brightness L current , the non-linear error E of the ambient light sensor env and the noise level N of the current display screen brightness sensor display ;

[0084] The data transmission unit is used to define the brightness data packet format for the acquired brightness data. The brightness data packet format includes a packet header, a sensor ID, a timestamp, a data value, a check code, and a packet tail, encapsulates to obtain a brightness data packet, and then sends the encapsulated brightness data packet to the data preprocessing module using the LoRa protocol.

[0085] The data preprocessing module includes a processing unit and a storage unit;

[0086] The processing unit includes a receiving unit, a data correction unit, and a data filtering unit;

[0087] The receiving unit is used to receive the brightness data packet in real time, identify and verify the packet header and the packet tail, parse according to the defined brightness data packet format, verify the integrity of the brightness data packet, and extract the brightness data;

[0088] The data correction unit is used to perform correction according to the non-linear error E of the ambient light sensor env to obtain the corrected ambient light intensity , where k env represents the error correction coefficient;

[0089] The data filtering unit is used to calculate and obtain the filtered brightness value according to the noise level N of the current display screen brightness sensor display , where , represents the noise filtering coefficient;

[0090] Then, the obtained corrected ambient light intensity and the filtered brightness value are summarized to obtain a corrected data set;

[0091] The storage unit is used to build a NoSQL database. By constructing an input interface and an output interface through an API application, the obtained corrected data set and brightness data are stored in the NoSQL database through the input interface.

[0092] In this embodiment, the system, through the data acquisition unit, installs ambient light sensors and internal brightness sensors around the LED display screen to collect in real time the ambient light intensity L env , the current display screen brightness L current , the non-linear error E of the ambient light sensor env and the noise level N of the current display screen brightness sensor display . This comprehensive data acquisition method ensures the accuracy and integrity of the obtained data, providing a reliable basis for subsequent data processing. The data transmission unit, by defining a standard brightness data packet format, ensures the efficient transmission and integrity of the data. Using the LoRa protocol for data transmission significantly improves the stability of data transmission and the ability of remote communication. Compared with traditional transmission methods, it has stronger anti-interference ability and longer transmission distance. The data preprocessing module, on the basis of receiving and parsing the data packets, uses the data correction unit and the data filtering unit to correct and filter the non-linear error of the ambient light sensor and the noise level of the display screen brightness sensor respectively to obtain the corrected ambient light intensity and the filtered brightness value , generating an accurate corrected data set. Finally, by constructing a NoSQL database and using the API application interface, the system efficiently stores and manages the corrected data set and brightness data. This data processing and storage method, compared with traditional relational databases, not only improves the data reading and writing efficiency, but also enhances the scalability and flexibility of the system.

[0093] Embodiment 3

[0094] This embodiment is an explanatory description based on Embodiment 2. Please refer to Figure 1 , specifically: The brightness adjustment algorithm module includes a target brightness calculation unit, a brightness dynamic adjustment unit, and a non-linear adjustment unit;

[0095] The target brightness calculation unit, through the output interface of the database, extracts in real time the corrected ambient light intensity and the current display screen brightness L current from the corrected data set and brightness data, and calculates to obtain the target brightness L target ;

[0096] The target brightness L target is calculated and obtained through the following algorithm formula;

[0097] ;

[0098] In the formula, represents the brightness compensation coefficient, L ref represents the ambient light reference value, L max represents the brightness peak.

[0099] The brightness dynamic adjustment unit calculates the actual brightness L target obtained by combining the target brightness L current and the current display brightness L actual in a time-weighted manner, and smoothly adjusts the brightness of the LED display;

[0100] The actual brightness L actual is calculated and obtained through the following adjustment formula;

[0101] ;

[0102] In the formula, t represents the adjustment time, and T represents the peak adjustment time.

[0103] The non-linear adjustment unit is used to extract the filtered brightness value and the target brightness L target , and corrects the target brightness L target through the adjustment coefficient to obtain the non-linearly adjusted brightness L adjusted ;

[0104] The non-linearly adjusted brightness L adjusted is calculated and obtained through the following adjustment formula;

[0105] ;

[0106] In the formula, represents the brightness non-linearity coefficient of the display screen, represents the color temperature adjustment coefficient.

[0107] In this embodiment, the target brightness calculation unit accurately calculates the target brightness L current by extracting the correction data set and brightness data from the database, and combining the calibrated ambient light intensity and the current display brightness L target . This calculation process is based on the brightness compensation coefficient, the ambient light reference value L ref and the brightness peak L max , ensuring the scientificity and practicality of the target brightness, and improving the problem of inaccurate brightness calculation in the traditional method. Secondly, the brightness dynamic adjustment unit uses the target brightness L target and the current display brightness L current to calculate the actual brightness L actual in a time-weighted manner, smoothly adjust the brightness of the display screen. This time-weighted adjustment method can more effectively avoid the transitions and fluctuations generated during the brightness adjustment process compared to traditional instantaneous adjustment methods, thereby improving the smoothness of brightness adjustment and visual comfort. Finally, the non-linear adjustment unit extracts the filtered brightness value and the target brightness L target , applies an adjustment coefficient to correct the target brightness, and generates a non-linearly adjusted brightness L adjusted . This adjustment process takes into account the brightness non-linear coefficient and color temperature adjustment coefficient of the display screen, and has better adaptability and accuracy compared to traditional linear adjustment methods. This non-linear adjustment method effectively overcomes the influence of the non-linearity of the display screen's color temperature and brightness response, improving the accuracy of adjustment and the stability of the display effect. Generally speaking, this module optimizes the brightness control of the LED display screen through refined brightness calculation and adjustment strategies, significantly improving the accuracy of the display effect and the user's visual experience.

[0108] Embodiment 4

[0109] This embodiment is an explanatory description carried out in Embodiment 3. Please refer to Figure 1 , specifically: The brightness compensation analysis module includes a brightness output unit and a brightness compensation evaluation unit;

[0110] The brightness output unit is used to perform comprehensive adjustment based on the non-linearly adjusted brightness L adjusted , and output the final brightness value L of the LED display screen final ;

[0111] The final brightness value L final is obtained through the following adjustment formula;

[0112] ;

[0113] The brightness compensation evaluation unit conducts a preliminary comparative evaluation by presetting a first brightness threshold L1 and a second brightness threshold L2 based on user requirements and the output final brightness value L final , and analyzes the current brightness compensation adjustment situation of the LED display screen;

[0114] When the final brightness value L final > the first brightness threshold L1, it indicates that there is an over-compensation anomaly in the current brightness of the LED display screen. In this case, the brightness adjustment optimization module is executed;

[0115] When the second brightness threshold L2 ≤ the final brightness value L final ≤ the first brightness threshold L1, it indicates that the current brightness adjustment of the LED display screen is normal;

[0116] When the final brightness value L finalWhen it is less than the first brightness threshold L2, it indicates that there is an abnormal phenomenon of insufficient compensation after the brightness of the current LED display screen is adjusted. At this time, the brightness adjustment optimization module is executed.

[0117] In this embodiment, the system adjusts the brightness L through comprehensive non-linear adjustment by the brightness output unit adjusted , calculates and outputs the final brightness value L of the LED display screen final . This process ensures the accuracy of the final brightness value, fully considers the non-linear adjustment factors, thereby optimizing the display effect and enhancing the visual experience. The brightness compensation evaluation unit realizes the accurate analysis of the brightness compensation adjustment effect by comparing and evaluating with the preset first brightness threshold L1 and second brightness threshold L2. When the final brightness value L final is higher than the first brightness threshold L1, the system can timely identify and handle the problem of overcompensation, and make necessary adjustments by calling the brightness adjustment optimization module. When the final brightness value L final is between the two thresholds, the system confirms that the brightness adjustment is within the normal range and no further adjustment is required. When the final brightness value L final is lower than the second brightness threshold L2, the system detects insufficient compensation and starts the optimization module for compensation to ensure that the brightness adjustment of the display screen always remains in the best state.

[0118] Embodiment 5

[0119] This embodiment is an explanatory description based on Embodiment 4. Please refer to Figure 1 , specifically: The brightness adjustment optimization module includes an optimization unit and an optimization evaluation unit;

[0120] The optimization unit includes a brightness optimization unit and a secondary brightness value output unit;

[0121] The brightness optimization unit is used to construct a brightness optimization formula and optimize the final brightness value L by setting optimization parameters to output the optimized brightness L final The optimized brightness L opt；

[0122] The optimized brightness L opt is calculated and output through the following optimization formula;

[0123] ;

[0124] In the formula, represents the optimization parameter, which is used to adjust the optimization amplitude, and the specific value is set by the user;

[0125] The secondary brightness value output unit is used to correct the brightness value of the optimized brightness L opt output after optimization, and combine the non-linear adjustment factors to output the optimized brightness value L2final ;

[0126] Optimize the brightness value L2 final Obtained by the following algorithm formula;

[0127] .

[0128] The optimization evaluation unit is used to compare the obtained optimized brightness value L2 final with the preset first brightness threshold L1 and second brightness threshold L2 for secondary comparative evaluation, analyze the optimized brightness adjustment effect, and generate an iterative mechanism;

[0129] When the final brightness value L final > the first brightness threshold L1, it indicates that there is an overcompensation anomaly after the current LED display brightness is optimized. At this time, execute the optimization iteration strategy and execute the optimization unit twice;

[0130] When the second brightness threshold L2 ≤ the final brightness value L final ≤ the first brightness threshold L1, it indicates that the brightness adjustment is normal after the current LED display brightness is optimized;

[0131] When the final brightness value L final < the first brightness threshold L2, it indicates that there is an undercompensation anomaly after the current LED display brightness is optimized. At this time, execute the optimization iteration strategy and execute the optimization unit twice;

[0132] After the optimization iteration strategy is executed three times, stop the iteration and generate a prompt for maintenance.

[0133] In this embodiment, the system constructs a special brightness optimization formula through the brightness optimization unit in the optimization unit, and finely adjusts the final brightness value L final through the set optimization parameters, and outputs the optimized brightness L opt . This process ensures that the brightness adjustment can meet specific visual requirements under different environments and usage conditions. The secondary brightness value output unit further combines non-linear adjustment factors to correct the optimized brightness L opt to the optimized brightness value L2 final , thereby improving the accuracy and stability of the display effect. The optimization evaluation unit accurately evaluates the optimized brightness adjustment effect by comparing the optimized brightness value L2 final with the preset brightness thresholds L1 and L2. When it is detected that the final brightness value L final has overcompensation or undercompensation, the optimization iteration strategy can automatically adjust and re-optimize to ensure the stability and reliability of the display brightness adjustment. By executing the optimization iteration strategy, the system can generate a prompt for maintenance after three iterations, preventing long-term performance problems caused by abnormal brightness adjustment.

[0134] Example 6

[0135] Please refer to Figure 1 and Figure 2 , a method for adjusting the brightness of an LED display screen, comprising the following steps:

[0136] S1. Set a sensor group to collect the brightness data of the LED display screen in real time, encapsulate the brightness data, and obtain a brightness data packet to send to the data preprocessing module;

[0137] S2. By receiving the obtained brightness data packet in real time, decrypt the brightness data packet to obtain the brightness data, perform preprocessing to obtain a corrected data set, and store the corrected data set and the brightness data in a database;

[0138] S3. Extract the brightness feature set in real time for calculation to obtain the target brightness L target , and perform dynamic adjustment calculation to obtain the actual brightness L actual , and then based on the target brightness L target , combine the color temperature change and non-linear response of the display screen to perform non-linear adjustment of the output brightness L adjusted ;

[0139] S4. Based on the output non-linear adjustment brightness L adjusted , combine the corrected data set for comprehensive calculation to obtain the final brightness value L final , and perform a preliminary comparison and evaluation with the preset first brightness threshold L1 and second brightness threshold L2 and the obtained final brightness value L final to analyze the current brightness compensation situation of the LED display screen;

[0140] S5. When the brightness compensation is abnormal in the preliminary evaluation, further construct a brightness optimization formula, calculate to obtain the optimized brightness L opt , and recalculate the output optimized brightness value L2 final , and perform a secondary comparison and evaluation with the first brightness threshold L1 and the second brightness threshold L2 to analyze the optimized current brightness optimization situation of the LED display screen, and generate an iterative optimization mechanism.

[0141] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A LED display brightness adjustment system, characterized in that: It includes a brightness data acquisition module, a data preprocessing module, a brightness adjustment algorithm module, a brightness compensation analysis module and a brightness adjustment optimization module; The brightness data acquisition module is used to set the sensor group to collect the brightness data of the LED display screen in real time, and encapsulate the brightness data, obtain the brightness data packet and send it to the data preprocessing module; The brightness data includes the ambient light intensity L env 、Current display brightness L current , the nonlinear error E of the ambient light sensor env and the noise level N of the current display brightness sensor display ; The data preprocessing module receives the acquired brightness data packet in real time, decapsulates the brightness data packet to obtain brightness data, performs preprocessing to obtain a corrected data set, and stores the corrected data set and the brightness data in a database; The modified data set includes the obtained corrected ambient light intensity and filtered brightness value ; The brightness adjustment algorithm module is used to extract the brightness feature set in real time to calculate and obtain the target brightness L target , and dynamically adjust the calculation to obtain the actual brightness L actual , and then according to the target brightness L target Combine the color temperature change and nonlinear response of the display screen to adjust the output brightness L nonlinearly. adjusted ; The target brightness L target Obtained through the following algorithm formula; ； In the formula, Indicates the brightness compensation coefficient, L ref Indicates the ambient light reference value, L max Indicates peak brightness; The actual brightness L actual Obtained through the following adjustment formula calculation; ； In the formula, t represents the adjustment time, and T represents the peak value of the adjustment time; The nonlinear adjustment brightness L adjusted Obtained through the following adjustment formula calculation; ； In the formula, Indicates the nonlinear coefficient of the brightness of the display. Indicates the color temperature adjustment coefficient; The brightness compensation analysis module is used to adjust the brightness L based on the nonlinearity of the output adjusted , the corrected data set is combined for comprehensive calculation to obtain the final brightness value L final , the first brightness threshold L1 and the second brightness threshold L2 are preset and the final brightness value L final Conduct preliminary comparative evaluation and analyze the current brightness compensation of LED display screens; The final brightness value L final Obtained through the following adjustment formula calculation; ； In the formula, E env Nonlinear error representation, k env represents the error correction coefficient, represents the noise filtering coefficient; The brightness adjustment optimization module is used to further construct a brightness optimization formula when the brightness compensation is initially evaluated to be abnormal, and calculate and obtain the optimized brightness L opt , and recalculate the output optimized brightness value L2 final And perform secondary comparative evaluation with the first brightness threshold L1 and the second brightness threshold L2, analyze the brightness optimization of the optimized LED current display screen, and generate an iterative optimization mechanism.

2. The LED display screen brightness adjustment system according to claim 1, characterized in that: The brightness data acquisition module includes a data acquisition unit and a data transmission unit; The data acquisition unit collects the brightness data of the LED display screen in real time by installing an ambient light sensor around the LED display screen and installing a current display screen brightness sensor inside the LED display screen; The data transmission unit is used to define the brightness data packet format for the acquired brightness data, wherein the brightness data packet format includes a packet header, a sensor ID, a timestamp, a data value, a check code and a packet tail, encapsulate the brightness data packet to obtain the brightness data packet, and then send the encapsulated brightness data packet to the data preprocessing module using the LoRa protocol.

3. The LED display screen brightness adjustment system according to claim 2, characterized in that: The data preprocessing module includes a processing unit and a storage unit; The processing unit includes a receiving unit, a data correction unit and a data filtering unit; The receiving unit is used to receive the brightness data packet in real time, identify and verify the packet header and packet tail, parse according to the defined brightness data packet format, verify the integrity of the brightness data packet, and extract brightness data; The data correction unit is used to correct the nonlinear error E of the ambient light sensor according to the env Perform calibration to obtain the calibrated ambient light intensity , where k env represents the error correction coefficient; The data filtering unit is used to filter the noise level N of the current display screen brightness sensor. display Calculate and obtain the filtered brightness value , where represents the noise filtering coefficient; Then the obtained corrected ambient light intensity and filtered brightness value Summarize to obtain the corrected data set; The storage unit is used to construct a NoSQL database, and an input interface and an output interface are constructed through an API application program, and the acquired correction data set and brightness data are stored in the NoSQL database through the input interface.

4. The LED display screen brightness adjustment system according to claim 3, characterized in that: The brightness adjustment algorithm module includes a target brightness calculation unit, a brightness dynamic adjustment unit and a nonlinear adjustment unit; The target brightness calculation unit extracts the corrected ambient light intensity in the correction data set and brightness data in real time through the output interface of the database. and the current display brightness L current , calculate and obtain the target brightness L target .

5. The LED display screen brightness adjustment system according to claim 4, characterized in that: The brightness dynamic adjustment unit combines the target brightness L target and the current display brightness L current , calculate the actual brightness L in a time-weighted manner actual , and smoothly adjust the brightness of the LED display.

6. The LED display screen brightness adjustment system according to claim 4, characterized in that: The nonlinear adjustment unit is used to extract the filtered brightness value and target brightness L target , by adjusting the coefficient to the target brightness L target Make corrections to obtain nonlinear adjustment brightness L adjusted .

7. The LED display screen brightness adjustment system according to claim 6, characterized in that: The brightness compensation analysis module includes a brightness output unit and a brightness compensation evaluation unit; The brightness output unit is used to adjust the brightness L according to the nonlinear adjusted , perform comprehensive adjustment to output the final brightness value L of the LED display final ; The brightness compensation evaluation unit presets a first brightness threshold L1 and a second brightness threshold L2 based on user needs and outputs a final brightness value L final Conduct preliminary comparative evaluation and analyze the current LED display brightness compensation adjustment status; When the final brightness value L final >When the first brightness threshold L1 is exceeded, it indicates that the brightness of the current LED display screen is over-compensated abnormally, and the brightness adjustment optimization module is executed at this time; When the second brightness threshold L2 ≤ the final brightness value L final When ≤ the first brightness threshold L1, it means that the current LED display brightness adjustment is normal; When the final brightness value L final When the brightness is less than the first brightness threshold L2, it indicates that there is an abnormal phenomenon of insufficient compensation after the brightness of the current LED display screen is adjusted. At this time, the brightness adjustment optimization module is executed.

8. The LED display screen brightness adjustment system according to claim 6, characterized in that: The brightness adjustment optimization module includes an optimization unit and an optimization evaluation unit; The optimization unit includes a brightness optimization unit and a secondary brightness value output unit; The brightness optimization unit is used to construct a brightness optimization formula by setting the optimization parameters For the final brightness value L final Perform brightness optimization and output optimized brightness L opt； The optimized brightness L opt The output is calculated by the following optimization formula; ； In the formula, Indicates optimization parameters, which are used to adjust the optimization range. The specific value is set by the user. The secondary brightness value output unit is used to output the optimized brightness L opt , correct the brightness value and combine the nonlinear adjustment factors to output the optimized brightness value L2 final ; The optimized brightness value L2 final Obtained through the following algorithm formula; 。 9. The LED display screen brightness adjustment system according to claim 8, characterized in that: The optimization evaluation unit is used to obtain the optimized brightness value L2 final Perform secondary comparative evaluation with the preset first brightness threshold L1 and second brightness threshold L2, analyze the optimized brightness adjustment effect, and generate an iterative mechanism; When the final brightness value L final >When the first brightness threshold L1 is exceeded, it indicates that there is an abnormal phenomenon of over-compensation after the brightness optimization of the current LED display screen. At this time, the optimization iteration strategy is executed and the optimization unit is executed twice; When the second brightness threshold L2 ≤ the final brightness value L final When ≤ the first brightness threshold L1, it means that the brightness of the current LED display screen is optimized and the brightness adjustment is normal; When the final brightness value L final When the brightness is less than the first brightness threshold L2, it means that there is an abnormal phenomenon of insufficient compensation after the brightness optimization of the current LED display screen. At this time, the optimization iteration strategy is executed and the optimization unit is executed twice; After the optimization iteration strategy is executed three times, the iteration is stopped and a prompt is generated for maintenance.

10. A method for adjusting brightness of an LED display screen, applied to a system for adjusting brightness of an LED display screen according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Set the sensor group to collect the brightness data of the LED display in real time, encapsulate the brightness data, obtain the brightness data packet and send it to the data preprocessing module; S2, receiving the acquired brightness data packet in real time, decapsulating the brightness data packet to obtain brightness data, performing preprocessing to obtain a corrected data set, and storing the corrected data set and the brightness data in a database; S3, extract the brightness feature set in real time to calculate and obtain the target brightness L target , and dynamically adjust the calculation to obtain the actual brightness L actual , and then according to the target brightness L target Combine the color temperature change and nonlinear response of the display screen to adjust the output brightness L nonlinearly. adjusted ; S4, nonlinear adjustment of brightness L based on output adjusted , the corrected data set is combined for comprehensive calculation to obtain the final brightness value L final , the first brightness threshold L1 and the second brightness threshold L2 are preset and the final brightness value L final Conduct preliminary comparative evaluation and analyze the current brightness compensation of LED display screens; S5. If the brightness compensation is abnormal in the preliminary evaluation, a brightness optimization formula is further constructed to calculate the optimized brightness L opt , and recalculate the output optimized brightness value L2 final And perform secondary comparative evaluation with the first brightness threshold L1 and the second brightness threshold L2, analyze the brightness optimization of the optimized LED current display screen, and generate an iterative optimization mechanism.

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