Energy-saving control method and system for LED display screen

Abstract

The invention discloses an LED display screen energy-saving control method and system, and relates to the field of automation control, and the method comprises the steps: collecting environment illumination and temperature and humidity data, dividing a screen into a static priority region, a dynamic priority region and a blank priority region in combination with image recognition, respectively setting a brightness reference value, and dynamically adjusting a driving current; triggering shallow / deep dormancy according to a blank area proportion or full-screen no-signal duration by adopting a time-phased hierarchical dormancy mechanism, and quickly awakening when a display demand appears; the power consumption of the whole screen and a single module is monitored in real time, a brightness strategy is dynamically adjusted in case of abnormality, and fault self-adaptive processing is realized through temperature, circuit state and environment sudden change monitoring. The method has the advantages that precise energy saving is achieved through partition recognition, differential brightness and driving current regulation and control and graded dormancy, and by combining real-time power consumption monitoring and abnormal self-adaptive processing, the energy consumption is greatly reduced while the display definition is guaranteed, stable operation of equipment is guaranteed, and the method is suitable for various complex scenes.

Description

Technical Field

[0001] This invention relates to the field of automation control, and in particular to an energy-saving control method and system for LED displays. Background Technology

[0002] LED displays, as an important medium for information display, are widely used in outdoor advertising, traffic signs, stage performances, and other fields. However, their high energy consumption is becoming increasingly prominent. Traditional LED displays often use PWM dimming technology, which can achieve brightness adjustment, but unnecessary energy loss still occurs under low grayscale or static images. In addition, the widespread adoption of large-size and high-resolution displays has further increased power consumption, not only driving up operating costs but also contradicting the concept of green and low-carbon development. At the same time, prolonged full-load operation can also shorten the lifespan of LED chips, increasing maintenance costs.

[0003] Current methods on the market generally fall short in terms of energy efficiency, adaptability, and stability. Most methods lack fine-grained zone control, failing to clearly define and prioritize static, dynamic, and blank areas. They often employ globally uniform brightness and current regulation, unable to adapt to the specific display needs of different areas, easily leading to wasted power. Even when zoning is implemented, some methods suffer from vague zoning standards and lagging regulation. Drive current is often designed with fixed levels, lacking continuous adjustability, making it difficult to accurately match brightness requirements and potentially causing current-brightness mismatches and screen flickering. Sleep control designs are crude, lacking tiered sleep mechanisms; either sleep trigger conditions are singular, or wake-up responses are slow, failing to flexibly adjust based on screen status. Furthermore, most methods lack comprehensive power consumption monitoring and long-term optimization mechanisms, and do not adequately consider sudden changes in environmental parameters and abnormal module temperatures, resulting in weak adaptive adjustment capabilities. This not only leads to low energy efficiency but may also affect the display's lifespan due to heat dissipation and current anomalies, making them unsuitable for various complex usage scenarios. Summary of the Invention

[0004] To improve existing methods and systems, this paper provides an energy-saving control method and system for LED displays. This method achieves precise energy saving through zone recognition, differentiated brightness and drive current regulation, and graded sleep mode. Combined with real-time power consumption monitoring and anomaly adaptive processing, it significantly reduces energy consumption and ensures stable equipment operation while maintaining display clarity, making it suitable for various complex scenarios.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] An energy-saving control method for LED displays includes:

[0007] Collect the light intensity, temperature, and humidity parameters of the LED display screen environment, and summarize them into a real-time environmental parameter dataset after preprocessing.

[0008] Image recognition is used to divide the LED display screen into three types of areas: static, dynamic, and blank. The definition of each type of area is clarified and the energy-saving priority is assigned. The blank area has the highest priority, followed by the static area, and the dynamic area has the lowest priority.

[0009] Based on the collected environmental parameters and area division results, brightness reference values ​​were set for three types of areas: static, dynamic, and blank areas.

[0010] Based on the set brightness reference values ​​for each area, the driving current of each LED module is controlled in stages. A continuously adjustable level design is adopted. By monitoring the relationship between current and brightness in real time, the driving current is matched with the brightness requirements of each area.

[0011] Multiple sleep period thresholds are preset, and sleep is controlled in stages and levels according to real-time screen recognition results and user preset display needs. When the blank area ratio and duration reach the threshold, shallow sleep is initiated. When there is no effective display on the whole screen and the duration reaches the threshold, deep sleep is initiated. When there is a display need, it is quickly woken up.

[0012] Real-time power consumption data of the entire display screen and individual modules is collected and compared with preset power consumption thresholds. When abnormalities occur, the driving current and brightness reference values ​​of the corresponding area are adjusted, and the control strategy is optimized based on long-term monitoring data.

[0013] Real-time monitoring of the display screen's operating status, including module temperature, drive circuit status, and sudden changes in environmental parameters, with adaptive adjustments made for each abnormal situation.

[0014] Preferably, the process of collecting the light intensity, temperature, and humidity parameters of the LED display screen environment, and then preprocessing them to form a real-time environmental parameter dataset specifically includes:

[0015] Several environmental data acquisition units are evenly distributed around the LED display screen. Each data acquisition unit simultaneously collects ambient light intensity, ambient temperature, and ambient humidity parameters.

[0016] During the data collection process, abnormal data is filtered out, and parameter values ​​that exceed the preset range are removed. The filtered valid parameters are then summarized to form a real-time updated environmental parameter dataset.

[0017] Preferably, the step of dividing the LED display screen into three types of areas—static, dynamic, and blank—through image recognition, clearly defining each type of area and assigning energy-saving priorities, with blank areas having the highest priority, static areas the second highest, and dynamic areas the lowest, specifically includes:

[0018] Based on the real-time display data of the LED display screen, image recognition technology is used to divide the display screen into static display area, dynamic display area and blank display area;

[0019] The static display area refers to an area where no pixel changes for 3 seconds or more; the dynamic display area refers to an area where the number of pixel changes exceeds 5 times per second; and the blank display area refers to an area with no effective display content.

[0020] The three types of areas are divided into energy-saving priorities: blank display areas have the highest energy-saving priority, static display areas have the second highest energy-saving priority, and dynamic display areas have the lowest energy-saving priority.

[0021] Preferably, the step of setting brightness reference values ​​for static, dynamic, and blank areas based on the collected environmental parameters and area division results specifically includes:

[0022] Based on the collected environmental parameter dataset and the regional division results, brightness benchmark values ​​were set for the three types of regions.

[0023] For blank display areas, a minimum brightness reference value is set. This minimum brightness reference value only meets the low power consumption standby requirements of the display module and does not display any effective image.

[0024] For static display areas, the brightness reference value is dynamically adjusted according to the ambient light intensity and ambient temperature. The higher the ambient light intensity, the higher the brightness reference value. When the ambient temperature exceeds the preset threshold, the brightness reference value is reduced to reduce power consumption and heat dissipation pressure.

[0025] For dynamic display areas, a minimum reasonable brightness baseline value is set based on display clarity and ambient light intensity.

[0026] Preferably, the step of classifying and adjusting the driving current of each LED module based on the set brightness reference values ​​for each region, adopting a continuously adjustable level design, and matching the driving current with the brightness requirements of each region by real-time monitoring of the relationship between current and brightness, specifically includes:

[0027] Based on the set brightness reference values ​​for each area, the driving current of each module of the LED display screen is controlled in stages. Different brightness reference values ​​correspond to different driving current levels, and the driving current levels adopt a continuously adjustable design.

[0028] The blank display area corresponds to the lowest drive current level, which only maintains the normal standby of the module. The static display area is matched with the corresponding medium drive current according to the brightness reference value, and the dynamic display area is matched with the lowest drive current to meet the clarity requirements.

[0029] Real-time monitoring of the driving current operation data of each module; if a mismatch between current and brightness or abnormal current fluctuations are detected, the current output is quickly calibrated to achieve a match between the driving current and brightness requirements.

[0030] Preferably, the preset multiple sleep period thresholds, combined with real-time screen recognition results and user-preset display requirements, enable time-based hierarchical sleep control. Shallow sleep is initiated when the percentage and duration of blank areas reach the threshold; deep sleep is initiated when there is no effective display on the entire screen for an extended period; and rapid wake-up is implemented when display requirements arise. Specifically, this includes:

[0031] Multiple sleep period thresholds are preset, and the LED display screen is subjected to time-based hierarchical sleep control by combining real-time image recognition results and user-preset display requirements.

[0032] When the blank display area accounts for more than 90% and the duration reaches the first sleep threshold, the LED module corresponding to the blank display area is controlled to enter a shallow sleep state, and part of the module's driving circuit is turned off, leaving only the standby circuit.

[0033] When the entire display screen has no valid display content and the duration reaches the second sleep threshold, the entire display screen is controlled to enter a deep sleep state, shutting down all unnecessary circuits and only keeping the environmental acquisition unit running at low power.

[0034] When a display requirement is detected, the corresponding LED module is quickly woken up.

[0035] Preferably, the real-time acquisition of power consumption data for the entire display screen and individual modules, comparison with preset power consumption thresholds, and adjustment of the corresponding area's drive current and brightness reference values ​​when abnormalities occur, along with optimization of the control strategy based on long-term monitoring data, specifically includes:

[0036] A power consumption monitoring unit is set at the power input terminal of the LED display screen and the power supply terminal of each LED module to collect power consumption data of the entire display screen and individual modules in real time.

[0037] The collected power consumption data is compared with the preset power consumption threshold. If the power consumption of a module in a certain area exceeds the preset threshold, the cause of the power consumption anomaly is analyzed to distinguish whether it is due to a mismatch between brightness and current, module failure, or environmental factors that cause high power consumption.

[0038] Adjustments are made based on the cause of the anomaly. If the brightness and current are mismatched, the driving current and brightness reference value of the corresponding area are finely adjusted. If the module is faulty, the faulty module is marked and its power supply is reduced. If the problem is caused by environmental factors, the brightness setting is optimized until the power consumption is restored to the threshold range.

[0039] Based on long-term monitoring of power consumption data and changes in environmental parameters, the brightness reference value, drive current control parameters, and power consumption threshold of each region are dynamically optimized.

[0040] Preferably, the real-time monitoring of the display screen's operating status, including module temperature, drive circuit status, and sudden changes in environmental parameters, and the adaptive adjustment processing for each abnormal situation specifically includes:

[0041] Real-time monitoring of the LED display screen's operating status, including module temperature, driver circuit status, and sudden abnormal changes in environmental parameters;

[0042] When the module temperature is detected to exceed the safety threshold, the drive current and brightness of the corresponding module are automatically reduced, and heat dissipation auxiliary control is activated.

[0043] When a sudden change in environmental parameters is detected, the brightness baseline value of each area is adjusted to ensure display clarity.

[0044] When an abnormality is detected in the drive circuit, the power supply to the abnormal module is cut off in time, and only the normal module is kept running.

[0045] Furthermore, an energy-saving control system for LED displays is proposed, comprising:

[0046] Parameter acquisition module: Collects light intensity, temperature and humidity data in real time through distributed sensors, and generates an environmental parameter dataset after filtering.

[0047] Image region recognition module: Based on image analysis technology, dynamically divides the image into static, dynamic, and blank regions, and marks their priority.

[0048] Dynamic brightness control module: Sets differentiated brightness reference values ​​based on environmental parameters and area type, with the lowest value in blank areas and adaptive adjustment in static areas;

[0049] Current graded drive module: It adopts a continuously adjustable range design to match the brightness requirements of each area, calibrates the current-brightness relationship in real time, and automatically adjusts when there is an abnormality;

[0050] Time-sharing sleep module: Triggers shallow / deep sleep based on the proportion of blank area or full-screen no-display state, shuts down unnecessary circuits, and wakes up in milliseconds when display needs are required;

[0051] Power consumption monitoring and optimization module: Real-time monitoring of power consumption of the entire screen and individual modules; when abnormalities occur, the current is adjusted or a fault is marked; long-term data is used to optimize control strategy thresholds.

[0052] Anomaly adaptive handling module: monitors module temperature, circuit status and environmental changes, and reduces brightness, activates heat dissipation or cuts off power to faulty modules when limits are exceeded;

[0053] Processor: The processor is used to handle the calculation process of each formula and the construction calculation process of each model.

[0054] Compared with the prior art, the advantages of the present invention are:

[0055] By employing distributed environmental parameter acquisition and preprocessing, combined with screen partitioning recognition technology, energy-saving priorities are divided into blank, static, and dynamic areas, and differentiated brightness benchmark values ​​are set accordingly. This achieves precise energy saving while ensuring display clarity. Through continuously adjustable levels of drive current hierarchical control, the brightness requirements of each area are precisely matched to avoid unnecessary power consumption. Time-segmented hierarchical sleep control, combined with the proportion of blank areas and display requirements, flexibly triggers shallow / deep sleep and quickly wakes up, further reducing standby power consumption. Real-time power consumption monitoring and long-term data optimization are combined to dynamically adjust the control strategy, balancing energy saving effect and power consumption stability. A comprehensive anomaly adaptive handling mechanism can cope with issues such as module temperature, circuit status, and sudden changes in environmental parameters, ensuring stable operation of the display screen. Overall, it achieves the control goals of energy efficiency, strong adaptability, and reliable operation, significantly reducing display screen energy consumption while extending equipment lifespan, and adapting to various complex usage scenarios. Attached Figure Description

[0056] Figure 1 This is a schematic diagram of the method proposed in this invention;

[0057] Figure 2 This is a schematic diagram of real-time parameter acquisition proposed in this invention;

[0058] Figure 3 This is a schematic diagram of the dynamic recognition of screen display areas proposed in this invention;

[0059] Figure 4 This is a schematic diagram illustrating the setting of brightness reference values ​​for each region as proposed in this invention;

[0060] Figure 5 This is a schematic diagram of the graded control of the driving current proposed in this invention;

[0061] Figure 6 This is a schematic diagram of the time-segmented sleep control proposed in this invention;

[0062] Figure 7 This is a schematic diagram of the real-time power consumption monitoring and feedback calibration proposed in this invention;

[0063] Figure 8 This is a schematic diagram of the adaptive adjustment under abnormal operating conditions proposed in this invention. Detailed Implementation

[0064] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0065] An energy-saving control system for LED displays includes:

[0066] Parameter acquisition module: Collects light intensity, temperature and humidity data in real time through distributed sensors, and generates an environmental parameter dataset after filtering.

[0067] Image region recognition module: Based on image analysis technology, dynamically divides the image into static, dynamic, and blank regions, and marks their priority.

[0068] Dynamic brightness control module: Sets differentiated brightness reference values ​​based on environmental parameters and area type, with the lowest value in blank areas and adaptive adjustment in static areas;

[0069] Current graded drive module: It adopts a continuously adjustable range design to match the brightness requirements of each area, calibrates the current-brightness relationship in real time, and automatically adjusts when there is an abnormality;

[0070] Time-sharing sleep module: Triggers shallow / deep sleep based on the proportion of blank area or full-screen no-display state, shuts down unnecessary circuits, and wakes up in milliseconds when display needs are required;

[0071] Power consumption monitoring and optimization module: Real-time monitoring of power consumption of the entire screen and individual modules; when abnormalities occur, the current is adjusted or a fault is marked; long-term data is used to optimize control strategy thresholds.

[0072] Anomaly adaptive handling module: monitors module temperature, circuit status and environmental changes, and reduces brightness, activates heat dissipation or cuts off power to faulty modules when limits are exceeded;

[0073] Processor: The processor is used to handle the calculation process of each formula and the construction calculation process of each model.

[0074] See Figure 1 As shown, an energy-saving control method for an LED display screen includes:

[0075] Step 1: Collect the light intensity, temperature, and humidity parameters of the LED display screen environment, and summarize them after preprocessing to form a real-time environmental parameter dataset;

[0076] Step 2: Divide the LED display screen into three categories: static, dynamic, and blank areas through image recognition. Define each category and prioritize energy saving, with blank areas having the highest priority, static areas the next highest, and dynamic areas the lowest.

[0077] Step 3: Based on the collected environmental parameters and area division results, set brightness reference values ​​for the three types of areas: static, dynamic, and blank.

[0078] Step 4: Based on the set brightness reference values ​​for each area, the driving current of each LED module is controlled in stages. A continuously adjustable level design is adopted. By monitoring the relationship between current and brightness in real time, the driving current is matched with the brightness requirements of each area.

[0079] Step 5: Preset multiple sleep period thresholds, combine real-time screen recognition results and user-preset display needs, and implement time-based hierarchical sleep control. When the blank area ratio and duration reach the threshold, shallow sleep is initiated; when there is no effective display on the entire screen and the duration reaches the threshold, deep sleep is initiated; and when there is a display need, wake up quickly.

[0080] Step 6: Collect power consumption data of the entire display screen and individual modules in real time, and compare it with the preset power consumption threshold. If there is an abnormality, adjust the driving current and brightness reference value of the corresponding area, and optimize the control strategy based on long-term monitoring data.

[0081] Step 7: Monitor the operating status of the display screen in real time, including module temperature, drive circuit status, and sudden changes in environmental parameters, and make adaptive adjustments for each abnormal situation.

[0082] See Figure 2 The data collected for the LED display screen environment, including light intensity, temperature, and humidity parameters, are preprocessed and summarized to form a real-time environmental parameter dataset, specifically including:

[0083] Several environmental data acquisition units are evenly distributed around the LED display screen. Each data acquisition unit simultaneously collects ambient light intensity, ambient temperature, and ambient humidity parameters.

[0084] During the data collection process, abnormal data is filtered out, and parameter values ​​that exceed the preset range are removed. The filtered valid parameters are then summarized to form a real-time updated environmental parameter dataset.

[0085] Specifically, abnormal data filtering and removal operations are performed synchronously during the data acquisition process, employing a dual verification mechanism: the first verification is a range verification, which directly removes parameter values ​​that exceed the preset acquisition range, namely, parameter values ​​with light intensity <0 lux or >10000 lux, temperature <-10℃ or >60℃, and humidity <20%RH or >90%RH; the second verification is a consistency verification, which compares the same type of parameter values ​​acquired three consecutive times from the same acquisition unit. If the deviation between any two parameter values ​​exceeds the allowable deviation range for the corresponding parameter, the set of parameters is determined to be abnormal data. After removing abnormal data, the arithmetic mean of the two valid parameter values ​​is used to fill the parameter gaps at that acquisition node.

[0086] See Figure 3 As shown, image recognition divides the LED display screen into three categories: static, dynamic, and blank areas. Each category is clearly defined and assigned an energy-saving priority, with blank areas having the highest priority, followed by static areas, and dynamic areas having the lowest priority. Specifically, these include:

[0087] Based on the real-time display data of the LED display screen, image recognition technology is used to divide the display screen into static display area, dynamic display area and blank display area;

[0088] The static display area refers to an area where no pixel changes for 3 seconds or more; the dynamic display area refers to an area where the number of pixel changes exceeds 5 times per second; and the blank display area refers to an area with no effective display content.

[0089] The three types of areas are divided into energy-saving priorities: blank display areas have the highest energy-saving priority, static display areas have the second highest energy-saving priority, and dynamic display areas have the lowest energy-saving priority.

[0090] Specifically, the screen partitioning adopts a combination of grid division and pixel-by-pixel analysis. First, the display area of ​​the entire LED display screen is evenly divided into several recognition sub-regions of the same size. The size of the sub-region is adaptively adjusted according to the resolution of the display screen. After the division is completed, all pixels in each sub-region are dynamically monitored point by point, and the brightness and grayscale changes of each pixel are recorded in multiple consecutive acquisition cycles.

[0091] Based on pixel changes, each identification sub-region is classified, with specific criteria for three types of regions and dual verification performed: Static display areas are defined as those where all pixels within the sub-region show no brightness or grayscale changes for 3 consecutive seconds or more, and the brightness difference between any two pixels remains constant. Verification requires confirmation that the sub-region data collected in 3 consecutive tests meets this condition. Dynamic display areas are defined as those where the number of pixel changes per second exceeds 5, and the proportion of changed pixels in the sub-region is not less than 30% of the total pixels, while the difference in brightness and grayscale between the changed pixels and their original state exceeds a preset range. Blank display areas are defined as those where the brightness and grayscale of all pixels within the sub-region are at the lowest threshold, and there is no valid image or text information. Verification requires ruling out brightness anomalies caused by display screen malfunctions.

[0092] Energy-saving priorities are defined based on a combination of regional display needs and energy-saving potential: Blank display areas have no display needs and the greatest energy-saving potential, so they are set to the highest energy-saving priority and given priority for deep energy-saving control; Static display areas have stable display content and do not require frequent brightness adjustments, so they have medium energy-saving potential and are set to the second-highest energy-saving priority, giving them regular energy-saving control; Dynamic display areas require ensuring display smoothness and clarity, so they have the lowest energy-saving potential and are set to the lowest energy-saving priority, giving them light energy-saving control without affecting display quality.

[0093] See Figure 4 As shown, based on the collected environmental parameters and area division results, brightness reference values ​​are set for three types of areas: static, dynamic, and blank. Specifically, these include:

[0094] Based on the collected environmental parameter dataset and the regional division results, brightness benchmark values ​​were set for the three types of regions.

[0095] For blank display areas, a minimum brightness reference value is set. This minimum brightness reference value only meets the low power consumption standby requirements of the display module and does not display any effective image.

[0096] For static display areas, the brightness reference value is dynamically adjusted according to the ambient light intensity and ambient temperature. The higher the ambient light intensity, the higher the brightness reference value. When the ambient temperature exceeds the preset threshold, the brightness reference value is reduced to reduce power consumption and heat dissipation pressure.

[0097] For dynamic display areas, a minimum reasonable brightness baseline value is set based on display clarity and ambient light intensity.

[0098] Specifically, for blank display areas, a fixed minimum reference value setting method is adopted, directly setting its brightness reference value to the minimum value of the preset basic range. This reference value only maintains the low-power operation of the LED module core circuit and does not drive the pixels to emit light effectively.

[0099] For static display areas, a dual-parameter linkage adjustment method is used to set the brightness reference value: the ambient light intensity is the core adjustment basis. For every 1000 lux increase in ambient light intensity, the brightness reference value can be increased by 5%-8% within the basic range. The ambient temperature is used as an auxiliary adjustment basis. When the ambient temperature exceeds the preset safety threshold, it is reduced by 3%-5% based on the reference value corresponding to the current light intensity. This reduces both the module power consumption and the module heat dissipation pressure.

[0100] The final calculation formula for the brightness reference value of the static display area is:

[0101]

[0102] in, This is the final value of the brightness reference value for the static display area. This serves as the baseline value for brightness in the static display area. For real-time ambient light intensity, This serves as a basic reference value for light intensity. This is the adjustment coefficient for the illumination intensity of the static area. This is the static area temperature and brightness correction coefficient. This is the coefficient for determining temperature anomalies;

[0103] For dynamic display areas, the brightness baseline value is set based on the principle of "clarity first, energy saving second": combined with the ambient light intensity, when the light intensity is below 2000 lux, the minimum value of the baseline range is set to ensure clear picture and the lowest power consumption; when the light intensity is above 2000 lux, the baseline value is gradually increased, with the increase controlled at 2%-4% / 1000 lux, until the maximum value of the baseline range is reached.

[0104] See Figure 5 As shown, based on the set brightness reference values ​​for each region, the driving current of each LED module is controlled in stages, adopting a continuously adjustable level design. By monitoring the relationship between current and brightness in real time, the driving current is matched with the brightness requirements of each region. Specifically, this includes:

[0105] Based on the set brightness reference values ​​for each area, the driving current of each module of the LED display screen is controlled in stages. Different brightness reference values ​​correspond to different driving current levels, and the driving current levels adopt a continuously adjustable design.

[0106] The blank display area corresponds to the lowest drive current level, which only maintains the normal standby of the module. The static display area is matched with the corresponding medium drive current according to the brightness reference value, and the dynamic display area is matched with the lowest drive current to meet the clarity requirements.

[0107] Real-time monitoring of the driving current operation data of each module; if a mismatch between current and brightness or abnormal current fluctuations are detected, the current output is quickly calibrated to achieve a match between the driving current and brightness requirements.

[0108] Specifically, for the LED module corresponding to the static display area, the corresponding medium-range base current level is matched according to the specific value of its brightness reference value, and then the current is finely adjusted through the linear control module to make the current accurately match the brightness reference value; for example, when the brightness reference value of the static area is at the upper limit of the medium-range brightness range, the current is adjusted to near the upper limit of the medium-range base current, and when the brightness reference value is at the lower limit, it is adjusted to near the lower limit of the medium-range base current. At the same time, the influence of ambient temperature is taken into account. If the module temperature is too high, the current is appropriately reduced based on the corresponding current.

[0109] For the LED module corresponding to the dynamic display area, the minimum reasonable brightness benchmark value is set as the core, and the minimum driving current that can meet the brightness requirement is matched. The lower limit range of the medium-range base current is used first, and then fine-tuned through a continuously adjustable mechanism to ensure smooth display of dynamic images without ghosting or uneven brightness. When the pixel change frequency of the dynamic image increases sharply, the current is briefly fine-tuned to the upper limit current of the corresponding brightness benchmark value. After the change frequency recovers, it immediately returns to the minimum reasonable current to reduce unnecessary power consumption.

[0110] See Figure 6 As shown, multiple sleep period thresholds are preset. Combined with real-time screen recognition results and user-preset display requirements, hierarchical sleep control is implemented based on time periods. Shallow sleep is initiated when the percentage and duration of blank areas reach the threshold; deep sleep is initiated when there is no effective display on the entire screen for an extended period; and rapid wake-up is implemented when display is required. Specifically, this includes:

[0111] Multiple sleep period thresholds are preset, and the LED display screen is subjected to time-based hierarchical sleep control by combining real-time image recognition results and user-preset display requirements.

[0112] When the blank display area accounts for more than 90% and the duration reaches the first sleep threshold, the LED module corresponding to the blank display area is controlled to enter a shallow sleep state, and part of the module's driving circuit is turned off, leaving only the standby circuit.

[0113] When the entire display screen has no valid display content and the duration reaches the second sleep threshold, the entire display screen is controlled to enter a deep sleep state, shutting down all unnecessary circuits and only keeping the environmental acquisition unit running at low power.

[0114] When a display requirement is detected, the corresponding LED module is quickly woken up.

[0115] Specifically, two sets of sleep time thresholds are preset, and the threshold setting logic is clearly defined. The first sleep threshold is for local blank areas, and the second sleep threshold is for the full screen blank state. The threshold duration can be adaptively adjusted according to the user's usage scenario. In normal scenarios, the first sleep threshold is set to 5-10 minutes of continuous idle time, and the second sleep threshold is set to 30-60 minutes of continuous idle time. In emergency scenarios, the threshold duration can be appropriately shortened.

[0116] When the blank display area is detected to account for more than 90% and the duration of this state reaches the first sleep threshold, the LED module corresponding to the blank display area enters a shallow sleep state. In the shallow sleep state, the non-core driving circuits such as the pixel driving circuit and brightness adjustment circuit of the module in this area are turned off, and only the wake-up detection circuit and signal receiving circuit of the module are kept in a low power operation state. At the same time, the redundant power supply circuit of the module in this area is cut off.

[0117] When it is detected that the entire LED display screen has no valid display content, that is, the blank display area accounts for 100%, and the duration of this state reaches the second sleep threshold, the entire display screen is controlled to enter a deep sleep state. In the deep sleep state, all non-essential circuits of the display screen are turned off, including the driving circuits of all LED modules, brightness adjustment modules, and image processing modules, with only the environmental acquisition unit remaining in a low-power operation state.

[0118] In sleep mode, it continuously monitors display demand signals and changes in environmental parameters. When it detects a display command sent by the user, an externally input screen signal, or a sudden change in environmental parameters that causes a display demand, it immediately initiates the wake-up process.

[0119] See Figure 7As shown, the system collects power consumption data for the entire display screen and individual modules in real time, compares it with preset power consumption thresholds, and adjusts the corresponding area's drive current and brightness reference values ​​when an anomaly occurs. The control strategy is optimized based on long-term monitoring data, specifically including:

[0120] A power consumption monitoring unit is set at the power input terminal of the LED display screen and the power supply terminal of each LED module to collect power consumption data of the entire display screen and individual modules in real time.

[0121] The collected power consumption data is compared with the preset power consumption threshold. If the power consumption of a module in a certain area exceeds the preset threshold, the cause of the power consumption anomaly is analyzed to distinguish whether it is due to a mismatch between brightness and current, module failure, or environmental factors that cause high power consumption.

[0122] Adjustments are made based on the cause of the anomaly. If the brightness and current are mismatched, the driving current and brightness reference value of the corresponding area are finely adjusted. If the module is faulty, the faulty module is marked and its power supply is reduced. If the problem is caused by environmental factors, the brightness setting is optimized until the power consumption is restored to the threshold range.

[0123] Based on long-term monitoring of power consumption data and changes in environmental parameters, the brightness reference value, drive current control parameters, and power consumption threshold of each region are dynamically optimized.

[0124] Specifically, after receiving power consumption data, a dual comparison and verification logic is initiated: The first comparison is a single module power consumption comparison, which compares the real-time power consumption value of each module with the preset power consumption threshold for that area. The preset power consumption threshold is set in advance based on the module area type, the current brightness reference value, and the drive current level. Different areas and different operating parameters correspond to different reasonable power consumption threshold ranges. The second comparison is a total power consumption comparison, which compares the real-time total power consumption of the entire display screen with the preset total power consumption threshold. The total power consumption threshold is set comprehensively based on the number of display screen modules, rated power consumption, and the current operating status of each area.

[0125] If, after comparison, it is found that the real-time power consumption of a module in a certain area exceeds the corresponding preset threshold, the anomaly analysis process is immediately initiated. Combining the module's real-time operating parameters and environmental parameters, the specific cause of the power consumption anomaly is determined: If the excessive power consumption is due to excessive drive current, the drive current of the module is gradually reduced, with each reduction controlled within a reasonable range, until the power consumption returns to within the threshold, while ensuring that the brightness meets the baseline requirements of the corresponding area; if the excessive power consumption is due to an excessively high brightness baseline value, the brightness baseline value of the area is appropriately reduced without affecting display clarity, and the corresponding drive current is adjusted simultaneously to achieve a balance between power consumption and display effect; if the excessive power consumption is due to abnormal module operation, the module is immediately marked, and the abnormal operating condition adjustment mechanism is activated for further investigation and handling.

[0126] See Figure 8As shown, the system monitors the display screen's operating status in real time, including module temperature, drive circuit status, and sudden changes in environmental parameters, and adaptively adjusts to handle various abnormal situations. Specifically, this includes:

[0127] Real-time monitoring of the LED display screen's operating status, including module temperature, driver circuit status, and sudden abnormal changes in environmental parameters;

[0128] When the module temperature is detected to exceed the safety threshold, the drive current and brightness of the corresponding module are automatically reduced, and heat dissipation auxiliary control is activated.

[0129] When a sudden change in environmental parameters is detected, the brightness baseline value of each area is adjusted to ensure display clarity.

[0130] When an abnormality is detected in the drive circuit, the power supply to the abnormal module is cut off in time, and only the normal module is kept running.

[0131] It should be noted that the order of the above embodiments of the present invention is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. Furthermore, the above description focuses on specific embodiments of this specification. Additionally, the processes depicted in the accompanying drawings do not necessarily require a specific or sequential order to achieve the desired results. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0132] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0133] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for energy-saving control of an LED display screen, characterized in that, include: Collect the light intensity, temperature, and humidity parameters of the LED display screen environment, and summarize them into a real-time environmental parameter dataset after preprocessing. Image recognition is used to divide the LED display screen into three types of areas: static, dynamic, and blank. The definition of each type of area is clarified and the energy-saving priority is assigned. The blank area has the highest priority, followed by the static area, and the dynamic area has the lowest priority. Based on the collected environmental parameters and area division results, brightness reference values ​​were set for three types of areas: static, dynamic, and blank areas. Based on the set brightness reference values ​​for each area, the driving current of each LED module is controlled in stages. A continuously adjustable level design is adopted. By monitoring the relationship between current and brightness in real time, the driving current is matched with the brightness requirements of each area. Multiple sleep period thresholds are preset, and sleep is controlled in stages and levels according to real-time screen recognition results and user preset display needs. When the blank area ratio and duration reach the threshold, shallow sleep is initiated. When there is no effective display on the whole screen and the duration reaches the threshold, deep sleep is initiated. When there is a display need, it is quickly woken up. Real-time power consumption data of the entire display screen and individual modules is collected and compared with preset power consumption thresholds. When abnormalities occur, the driving current and brightness reference values ​​of the corresponding area are adjusted, and the control strategy is optimized based on long-term monitoring data. Real-time monitoring of the display screen's operating status, including module temperature, drive circuit status, and sudden changes in environmental parameters, with adaptive adjustments made for each abnormal situation.

2. The energy-saving control method for an LED display screen according to claim 1, characterized in that, The collection of light intensity, temperature, and humidity parameters of the LED display screen environment, after preprocessing, and summarizing to form a real-time environmental parameter dataset specifically includes: Several environmental data acquisition units are evenly distributed around the LED display screen. Each data acquisition unit simultaneously collects ambient light intensity, ambient temperature, and ambient humidity parameters. During the data collection process, abnormal data is filtered out, and parameter values ​​that exceed the preset range are removed. The filtered valid parameters are then summarized to form a real-time updated environmental parameter dataset.

3. The energy-saving control method for an LED display screen according to claim 1, characterized in that, The process of dividing the LED display screen into three categories—static, dynamic, and blank—through image recognition, clearly defining each category and assigning energy-saving priorities, with blank areas having the highest priority, followed by static areas, and dynamic areas having the lowest priority, specifically includes: Based on the real-time display data of the LED display screen, image recognition technology is used to divide the display screen into static display area, dynamic display area and blank display area; The static display area refers to an area where no pixel changes for 3 seconds or more; the dynamic display area refers to an area where the number of pixel changes exceeds 5 times per second; and the blank display area refers to an area with no effective display content. The three types of areas are divided into energy-saving priorities: blank display areas have the highest energy-saving priority, static display areas have the second highest energy-saving priority, and dynamic display areas have the lowest energy-saving priority.

4. The energy-saving control method for an LED display screen according to claim 1, characterized in that, The specific steps for setting brightness reference values ​​for static, dynamic, and blank areas based on collected environmental parameters and area division results include: Based on the collected environmental parameter dataset and the regional division results, brightness benchmark values ​​were set for the three types of regions. For blank display areas, a minimum brightness reference value is set. This minimum brightness reference value only meets the low power consumption standby requirements of the display module and does not display any effective image. For static display areas, the brightness reference value is dynamically adjusted according to the ambient light intensity and ambient temperature. The higher the ambient light intensity, the higher the brightness reference value. When the ambient temperature exceeds the preset threshold, the brightness reference value is reduced to reduce power consumption and heat dissipation pressure. For dynamic display areas, a minimum reasonable brightness baseline value is set based on display clarity and ambient light intensity.

5. The energy-saving control method for an LED display screen according to claim 1, characterized in that, Based on the set brightness reference values ​​for each region, the driving current of each LED module is controlled in stages, adopting a continuously adjustable level design. By monitoring the correspondence between current and brightness in real time, the driving current is matched with the brightness requirements of each region. Specifically, this includes: Based on the set brightness reference values ​​for each area, the driving current of each module of the LED display screen is controlled in stages. Different brightness reference values ​​correspond to different driving current levels, and the driving current levels adopt a continuously adjustable design. The blank display area corresponds to the lowest drive current level, which only maintains the normal standby of the module. The static display area is matched with the corresponding medium drive current according to the brightness reference value, and the dynamic display area is matched with the lowest drive current to meet the clarity requirements. Real-time monitoring of the driving current operation data of each module; if a mismatch between current and brightness or abnormal current fluctuations are detected, the current output is quickly calibrated to achieve a match between the driving current and brightness requirements.

6. The energy-saving control method for an LED display screen according to claim 1, characterized in that, The preset multiple sleep period thresholds, combined with real-time image recognition results and user-preset display requirements, enable time-based hierarchical sleep control. Shallow sleep is initiated when the percentage and duration of blank area reach the threshold; deep sleep is initiated when there is no effective display on the entire screen for an extended period; and rapid wake-up is implemented when display is required. Specifically, this includes: Multiple sleep period thresholds are preset, and the LED display screen is subjected to time-based hierarchical sleep control by combining real-time image recognition results and user-preset display requirements. When the blank display area accounts for more than 90% and the duration reaches the first sleep threshold, the LED module corresponding to the blank display area is controlled to enter a shallow sleep state, and part of the module's driving circuit is turned off, leaving only the standby circuit. When the entire display screen has no valid display content and the duration reaches the second sleep threshold, the entire display screen is controlled to enter a deep sleep state, shutting down all unnecessary circuits and only keeping the environmental acquisition unit running at low power. When a display requirement is detected, the corresponding LED module is quickly woken up.

7. The energy-saving control method for an LED display screen according to claim 1, characterized in that, The real-time acquisition of power consumption data for the entire display screen and individual modules, compared with preset power consumption thresholds, and adjustment of the corresponding area's drive current and brightness reference values ​​when abnormalities occur, along with optimization of the control strategy based on long-term monitoring data, specifically includes: A power consumption monitoring unit is set at the power input terminal of the LED display screen and the power supply terminal of each LED module to collect power consumption data of the entire display screen and individual modules in real time. The collected power consumption data is compared with the preset power consumption threshold. If the power consumption of a module in a certain area exceeds the preset threshold, the cause of the power consumption anomaly is analyzed to distinguish whether it is due to a mismatch between brightness and current, module failure, or environmental factors that cause high power consumption. Adjustments are made based on the cause of the anomaly. If the brightness and current are mismatched, the driving current and brightness reference value of the corresponding area are finely adjusted. If the module is faulty, the faulty module is marked and its power supply is reduced. If the problem is caused by environmental factors, the brightness setting is optimized until the power consumption is restored to the threshold range. Based on long-term monitoring of power consumption data and changes in environmental parameters, the brightness reference value, drive current control parameters, and power consumption threshold of each region are dynamically optimized.

8. The energy-saving control method for an LED display screen according to claim 1, characterized in that, The real-time monitoring of the display screen's operating status, including module temperature, drive circuit status, and sudden changes in environmental parameters, and the adaptive adjustment handling for each abnormal situation specifically includes: Real-time monitoring of the LED display screen's operating status, including module temperature, driver circuit status, and sudden abnormal changes in environmental parameters; When the module temperature is detected to exceed the safety threshold, the drive current and brightness of the corresponding module are automatically reduced, and heat dissipation auxiliary control is activated. When a sudden change in environmental parameters is detected, the brightness baseline value of each area is adjusted to ensure display clarity. When an abnormality is detected in the drive circuit, the power supply to the abnormal module is cut off in time, and only the normal module is kept running.

9. An energy-saving control system for an LED display screen, used to implement the energy-saving control method for an LED display screen as described in any one of claims 1-8, characterized in that, include: Parameter acquisition module: Collects light intensity, temperature and humidity data in real time through distributed sensors, and generates an environmental parameter dataset after filtering. Image region recognition module: Based on image analysis technology, dynamically divides the image into static, dynamic, and blank regions, and marks their priority. Dynamic brightness control module: Sets differentiated brightness reference values ​​based on environmental parameters and area type, with the lowest value in blank areas and adaptive adjustment in static areas; Current graded drive module: It adopts a continuously adjustable range design to match the brightness requirements of each area, calibrates the current-brightness relationship in real time, and automatically adjusts when there is an abnormality; Time-sharing sleep module: Triggers shallow / deep sleep based on the proportion of blank area or full-screen no-display state, shuts down unnecessary circuits, and wakes up in milliseconds when display needs are required; Power consumption monitoring and optimization module: Real-time monitoring of power consumption of the entire screen and individual modules; when abnormalities occur, the current is adjusted or a fault is marked; long-term data is used to optimize control strategy thresholds. Anomaly adaptive handling module: monitors module temperature, circuit status and environmental changes, and reduces brightness, activates heat dissipation or cuts off power to faulty modules when limits are exceeded; Processor: The processor is used to handle the calculation process of each formula and the construction calculation process of each model.

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