A power management method and system for outdoor power screens based on temperature difference compensation

Abstract

This application relates to the field of outdoor display technology, and in particular to a power management method and system for outdoor displays based on temperature difference compensation. It includes: establishing a temperature sensor array for the outdoor display; constructing multiple temperature difference sub-regions based on the monitoring data packets from the temperature sensor array; determining whether each temperature difference sub-region generates a compensation command; setting a primary control strategy for the power module based on all compensation commands; constructing an ambient temperature field for the power module; and determining whether to correct the primary control strategy based on the ambient temperature field. By constructing the temperature sensor array, the temperature changes of the outdoor display are sensed in real time. Multiple temperature difference sub-regions are constructed by analyzing the monitoring data packets. Corresponding compensation sub-strategies are set based on the actual temperature difference and operating characteristics of each temperature difference sub-region, thereby dynamically adjusting the operating parameters of the power module, reducing the impact of temperature fluctuations on the operation of the power module, and ensuring the stable operation of the outdoor display.

Description

Technical Field

[0001] This application relates to the field of outdoor display technology, and in particular to a power management method and system for outdoor displays based on temperature difference compensation. Background Technology

[0002] Unlike indoor environments, outdoor displays are exposed to complex and variable conditions for extended periods, particularly large diurnal and seasonal temperature differences, as well as localized high temperatures caused by direct sunlight. Ambient temperatures can range from tens of degrees below zero in winter to sixty or seventy degrees Celsius or even higher under direct sunlight in summer, exhibiting extreme variations.

[0003] The core components of the display screen and the switching power supply module that powers it are highly dependent on the operating temperature for their efficiency, output stability and lifespan. High temperatures will significantly reduce the conversion efficiency of the switching power supply, increase its own power consumption and heat generation, accelerate the aging of components and shorten the lifespan of the power supply.

[0004] In low-temperature environments, switching power supplies may have difficulty starting up, and their efficiency may decrease. Temperature changes can also cause a decrease in display brightness, affecting visual quality. Summary of the Invention

[0005] The purpose of this application is to provide an outdoor screen power management method and system based on temperature difference compensation to solve the above-mentioned technical problems, thereby reducing the impact of temperature fluctuations on the operation of the power module and ensuring the stable operation of the outdoor screen.

[0006] In some embodiments of this application, a temperature sensing array is constructed to sense the temperature changes of the outdoor screen in real time. By analyzing the monitoring data packets, multiple temperature difference sub-regions are constructed. Based on the actual temperature difference and operating characteristics of each temperature difference sub-region, corresponding compensation sub-strategies are set to dynamically adjust the operating parameters of the power module, reduce the impact of temperature fluctuations on the operation of the power module, and ensure the stable operation of the outdoor screen.

[0007] In some embodiments of this application, an outdoor screen power management method based on temperature difference compensation is provided, including: Establish a temperature sensing array for outdoor screens, and construct multiple temperature difference sub-regions based on the monitoring data packets of the temperature sensing array; Determine whether compensation commands are generated in each temperature difference sub-region, and set the primary control strategy of the power module based on all compensation commands; Construct the ambient temperature field of the power module, and determine whether to modify the primary control strategy based on the ambient temperature field. The temperature sensing array includes multiple monitoring points.

[0008] In some embodiments of this application, multiple temperature difference sub-regions are constructed, including: Multiple feedback time points can be preset; Obtain the monitoring data packet for the current feedback time point; A primary temperature value sequence A is established based on the monitoring data package; A=(a1, a2…a…) i …a n ), where a i Let be the temperature value of the i-th monitoring point in the temperature sensing array; n is the number of monitoring points in the temperature transmission array. Aggregate all monitoring points according to the preset aggregation model and the first-level temperature difference value series A; Multiple temperature difference sub-regions are defined based on the polymerization results; Establish a temperature difference sub-region sequence B, B=(b1, b2…b i …b m ), where b i Let be the i-th temperature difference sub-region; m is the number of temperature difference sub-regions.

[0009] In some embodiments of this application, determining whether each temperature difference sub-region generates a compensation command includes: The standard operating temperature is set according to the preset compensation model; b is set sequentially according to the temperature difference sub-region sequence B. i Define the target sub-region and generate secondary temperature values ​​for the target sub-region; The temperature difference value h of the target sub-region is generated based on the standard temperature value and the secondary temperature value; Preset temperature difference threshold H1; If h > H1, generate a compensation instruction for the target sub-region, and generate a compensation sub-strategy for the target sub-region based on the compensation instruction; If h Check sequentially whether to generate compensation instructions for each target sub-region; The primary control strategy for the power supply module is set based on all compensation sub-strategies.

[0010] In some embodiments of this application, generating the temperature difference value h of the target sub-region includes: Obtain the primary temperature values ​​of each monitoring point in the target sub-region based on the monitoring data packet; The secondary temperature value c is generated; c=a'; Where a' is the average of the first-level temperature values ​​of all monitoring points in the target sub-region; Generate temperature difference value h; h = η * (c1 - c) * Y(i); η=U1*[ (a 1i -a')​2 ; where, θ1 is the number of monitoring points in the target sub-region; a 1i is the first-level temperature value of the i-th monitoring point in the target sub-region; η is the temperature difference compensation coefficient; U1 is the preset first conversion coefficient; c1 is the standard temperature value; Y(i) is the selection coefficient; if (c1 - c) < 0, Y(i) = -1; if (c1 - c) > 0, Y(i) = 1.

[0011] In some embodiments of the present application, generating a compensation sub-strategy for the target sub-region according to a compensation instruction includes: Obtaining the temperature difference value h of the target sub-region; Setting an initial sub-strategy for the target sub-region according to the temperature difference value h and a preset compensation model; Generating a deviation evaluation value f for the target sub-region; f = β i * s i ; where, θ2 is the number of deviation evaluation indexes; β i is the influence factor of the i-th deviation evaluation index; s i is the reference value of the i-th deviation evaluation index in the target sub-region; Presetting a deviation evaluation value threshold F1; If f > F1, generating a first-level correction instruction for the initial sub-strategy, and generating a compensation sub-strategy for the target sub-region according to the correction result; If f < F1, setting the initial sub-strategy as the compensation sub-strategy for the target sub-region.

[0012] In some embodiments of the present application, determining whether to correct the first-level control strategy according to the ambient temperature field includes: Obtaining a feedback data packet of the power supply module; Generating an ambient temperature field of the power supply module according to the feedback data packet; Generating a temperature difference compensation value d for the power supply module; d = µ i * (s i - s') 2 ; where, r1 is the number of feedback points in the ambient temperature field; µ i is the influence factor of the i-th feedback point; s i is the real-time temperature value obtained by the i-th feedback point; s' is the standard ambient temperature value of the power supply module; Generating a correction coefficient e according to the first-level control strategy; Generating a correction evaluation value w according to the correction coefficient e and the temperature difference compensation value d, w = e * d; Preset correction evaluation value threshold W1; If w > W1, modify the first-level control strategy.

[0013] In some embodiments of this application, the correction coefficient e is generated according to the primary control strategy, including: e=U2*[ g i *k i ]; Where U2 is the preset second conversion coefficient; θ3 is the number of compensation sub-strategies in the primary control strategy; g i k is the influence factor of the i-th compensation sub-strategy in the first-level control strategy; i This represents the operating load value of the i-th compensation sub-strategy in the primary control strategy.

[0014] In some embodiments of this application, an outdoor screen power management system based on temperature difference compensation is provided, including: The central control unit is used to establish a temperature sensing array for the outdoor screen, which includes multiple monitoring points; The monitoring unit includes multiple primary sub-modules, which are located at various monitoring points. The monitoring unit is used to collect temperature data from each monitoring point; The monitoring unit also includes multiple secondary sub-modules, which are used to collect ambient temperature data of the power module. The central control unit includes: The first processing module is used to construct multiple temperature difference sub-regions based on the monitoring data packets of the temperature sensing array; The second processing module is used to determine whether each temperature difference sub-region generates a compensation command, and to set the first-level control strategy of the power module based on all compensation commands. The third processing module is used to construct the ambient temperature field of the power supply module and determine whether to modify the primary control strategy based on the ambient temperature field.

[0015] In some embodiments of this application, the first processing module is further configured to include: Multiple feedback time points can be preset; Obtain the monitoring data packet for the current feedback time point; A primary temperature value sequence A is established based on the monitoring data package; A=(a1, a2…a…) i …a n ), where a i Let be the temperature value of the i-th monitoring point in the temperature sensing array; n is the number of monitoring points in the temperature transmission array. Aggregate all monitoring points according to the preset aggregation model and the first-level temperature difference value series A; Multiple temperature difference sub-regions are defined based on the polymerization results; Establish a temperature difference sub-region sequence B, B=(b1, b2…b i …b m ), where b i Let be the i-th temperature difference sub-region; m is the number of temperature difference sub-regions.

[0016] In some embodiments of this application, the second processing module is further configured to: The standard operating temperature is set according to the preset compensation model; b is set sequentially according to the temperature difference sub-region sequence B. i For the target sub-region; Obtain the primary temperature values ​​of each monitoring point in the target sub-region based on the monitoring data packet; The secondary temperature value c is generated; c=a'; Where a' is the average of the first-level temperature values ​​of all monitoring points in the target sub-region; Generate temperature difference value h; h = η * (c1 - c) * Y(i); η=U1*[ (a 1i -a') 2 ]; Where θ1 is the number of monitoring points in the target sub-region; a 1i Let η be the first-level temperature value of the i-th monitoring point in the target sub-region; η be the temperature difference compensation coefficient; U1 be the preset first conversion coefficient; c1 be the standard temperature value; Y(i) be the selection coefficient; if (c1-c)<0, Y(i)=-1; if (c1-c)>0, Y(i)=1; Preset temperature difference threshold H1; If h > H1, generate a compensation instruction for the target sub-region, and generate a compensation sub-strategy for the target sub-region based on the compensation instruction; If h Check sequentially whether to generate compensation instructions for each target sub-region; The primary control strategy for the power supply module is set based on all compensation sub-strategies.

[0017] Compared with the prior art, the outdoor screen power management method and system based on temperature difference compensation proposed in this application have the following advantages: ​By constructing a temperature sensor array, the temperature changes of the outdoor screen are sensed in real time. By analyzing the monitoring data packets, multiple temperature difference sub-regions are constructed. Based on the actual temperature difference and operating characteristics of each temperature difference sub-region, corresponding compensation sub-strategies are set to dynamically adjust the operating parameters of the power module, reduce the impact of temperature fluctuations on the operation of the power module, and ensure the stable operation of the outdoor screen. Attached Figure Description

[0018] Figure 1 This is a flowchart illustrating a preferred embodiment of an outdoor screen power management method based on temperature difference compensation. Detailed Implementation

[0019] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application.

[0020] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] like Figure 1 As shown in the preferred embodiment of this application, an outdoor screen power management method based on temperature difference compensation includes: S101: Establish a temperature sensing array for the outdoor screen, and construct multiple temperature difference sub-regions based on the monitoring data packets of the temperature sensing array; S102: Determine whether each temperature difference sub-region generates a compensation command, and set the first-level control strategy of the power module according to all compensation commands; S103: Construct the ambient temperature field of the power module, and determine whether to modify the first-level control strategy based on the ambient temperature field. The temperature sensing array includes multiple monitoring points.

[0024] Specifically, by constructing a temperature sensor array on the back of the outdoor screen, the temperature distribution of the outdoor screen is monitored in real time, and by periodically analyzing the temperature values ​​of each monitoring point, it is determined whether to compensate and correct the operating parameters of the power module.

[0025] Specifically, multiple temperature difference sub-regions are constructed, including: Multiple feedback time points can be preset; Obtain the monitoring data packet for the current feedback time point; A primary temperature value sequence A is established based on the monitoring data package; A=(a1, a2…a…) i …a n ), where a i Let be the temperature value of the i-th monitoring point in the temperature sensing array; n is the number of monitoring points in the temperature transmission array. Aggregate all monitoring points according to the preset aggregation model and the first-level temperature difference value series A; Multiple temperature difference sub-regions are defined based on the polymerization results; Establish a temperature difference sub-region sequence B, B=(b1, b2…b i …b m ), where b i Let be the i-th temperature difference sub-region; m is the number of temperature difference sub-regions.

[0026] Specifically, multiple operating temperature ranges and zoning control models for outdoor screens are constructed based on historical operating parameters. By analyzing the primary temperature values ​​of each monitoring point, all monitoring points within the same operating temperature range are initially aggregated to generate multiple monitoring point sets. The zoning control model then performs secondary aggregation on the mapping areas of each monitoring point in the current monitoring point set, further aggregating monitoring points that can be coordinated for control, thereby generating multiple temperature difference sub-regions.

[0027] Specifically, the mapping area of ​​the monitoring point is the display area of ​​the outdoor screen represented by the temperature value collected by the monitoring point.

[0028] Specifically, the outdoor screen area corresponding to a single temperature difference sub-region is in the same operating temperature range within the current feedback time node, and the coordinated adjustment and control of the outdoor screen area can be achieved by adjusting the operating parameters of the power module.

[0029] In a preferred embodiment of this application, determining whether a compensation instruction is generated for each temperature difference sub-region includes: The standard operating temperature is set according to the preset compensation model; b is set sequentially according to the temperature difference sub-region sequence B. i Define the target sub-region and generate secondary temperature values ​​for the target sub-region; The temperature difference value h of the target sub-region is generated based on the standard temperature value and the secondary temperature value; Preset temperature difference threshold H1; If h > H1, generate a compensation instruction for the target sub-region, and generate a compensation sub-strategy for the target sub-region based on the compensation instruction; If h Check sequentially whether to generate compensation instructions for each target sub-region; The primary control strategy for the power supply module is set based on all compensation sub-strategies.

[0030] Specifically, based on the historical operating data of the outdoor screen, display image parameters are extracted and analyzed. The display content with the longest display time for each pixel in the outdoor display is extracted, stitched together, and a standard image is generated. The standard display state of the outdoor screen is constructed using this standard image, and a corresponding standard operating temperature is generated. Based on the standard operating temperature, multiple temperature difference values ​​are generated. By optimizing the historical operating parameters, the parameters that the power module needs to adjust for different temperature difference values ​​are generated (including but not limited to adjusting the duty cycle of the target display area, adjusting the output current, and adjusting the output voltage). Corresponding adjustment sub-strategies are generated based on the adjustment parameters corresponding to different temperature difference values. A compensation model is constructed based on all adjustment sub-strategies and the standard operating temperature.

[0031] Specifically, the standard operating temperature refers to the midpoint of the optimal operating temperature range for an outdoor display screen when it is in standard display condition. At the standard operating temperature, the outdoor display screen will not experience operational instability due to temperature interference.

[0032] Specifically, by integrating all compensation sub-strategies, a corresponding primary control strategy is generated.

[0033] Specifically, the temperature difference threshold can be set based on historical parameters. The temperature difference threshold refers to the absolute value of the difference between the maximum and minimum values ​​of the optimal operating temperature range for the outdoor display screen when it is in standard display mode and the standard operating temperature.

[0034] Specifically, the temperature difference h between the standard temperature value and the secondary temperature value is set as the temperature difference value h of the target sub-region.

[0035] ​Specifically, when the real-time temperature difference value of a single temperature difference sub-region exceeds the temperature difference threshold, it indicates that the current temperature difference sub-region is in an abnormal operating state, and the operating parameters of that sub-region need to be adjusted in a timely manner. By generating a compensation sub-strategy, the temperature state of the temperature difference sub-region can be adjusted in a timely manner to ensure the stable operation of the outdoor screen.

[0036] Specifically, generating the temperature difference value h of the target sub-region includes: Obtain the primary temperature values ​​of each monitoring point in the target sub-region based on the monitoring data packet; The secondary temperature value c is generated; c=a'; Where a' is the average of the first-level temperature values ​​of all monitoring points in the target sub-region; Generate temperature difference value h; h = η * (c1 - c) * Y(i); η=U1*[ (a 1i -a') 2 ]; Where θ1 is the number of monitoring points in the target sub-region; a 1i Let η be the first-level temperature value of the i-th monitoring point in the target sub-region; η be the temperature difference compensation coefficient; U1 be the preset first conversion coefficient; c1 be the standard temperature value; Y(i) be the selection coefficient; if (c1-c)<0, Y(i)=-1; if (c1-c)>0, Y(i)=1.

[0037] Specifically, by presetting a first conversion coefficient, the temperature difference compensation coefficient η is made to be within a preset value range, and [ (a 1i -a') 2 The larger the value of ], the larger the corresponding value of the temperature difference compensation coefficient η. (a 1i -a') 2 The correspondence between the temperature difference compensation coefficient η and the temperature difference compensation coefficient η can be set according to historical parameters. The value of the temperature difference compensation coefficient η is always greater than 1.

[0038] Specifically, the temperature difference threshold can be set based on historical parameters.

[0039] Specifically, the compensation sub-strategy for the target sub-region is generated based on the compensation instruction, including: Obtain the temperature difference value h of the target sub-region; The initial sub-strategy for the target sub-region is set based on the temperature difference value h and the preset compensation model; Generate the deviation evaluation value f of the target sub-region; f=[ β i *s i; where, θ2 is the number of deviation evaluation indexes; β i is the influence factor of the i-th deviation evaluation index; s i is the reference value of the i-th deviation evaluation index in the target sub-region; a preset deviation evaluation value threshold F1; If f > F1, generate a primary correction instruction for the initial sub-strategy, and generate a compensation sub-strategy for the target sub-region according to the correction result; If f < F1, set the initial sub-strategy as the compensation sub-strategy for the target sub-region.

[0040] Specifically, the deviation evaluation value threshold can be set according to historical parameters, Specifically, select the adjustment sub-strategy corresponding to the compensation model through the real-time temperature difference value and set it as the initial sub-strategy.

[0041] Specifically, set multiple deviation evaluation indexes by analyzing the standard display state. The deviation evaluation indexes include but are not limited to multiple parameters such as display content and display brightness. Generate the reference value of each deviation evaluation index through the difference between the real-time value of the target sub-region in each deviation evaluation index and the reference value under the standard display state. The larger the difference, the larger the reference value of the corresponding deviation evaluation index.

[0042] Specifically, the influence factor of each deviation evaluation index can be set according to its influence degree on the temperature change of the outdoor screen. The greater the influence degree, the larger the value of the corresponding influence factor.

[0043] Specifically, optimize the selected adjustment sub-strategy through the primary correction instruction, so as to improve the temperature control efficiency of the target sub-region, ensure the stable operation of the outdoor screen, and extend the service life of the outdoor screen.

[0044] It can be understood that in the above embodiments, multiple temperature difference sub-regions are constructed, and corresponding compensation sub-strategies are set according to the actual temperature difference and operating characteristics of each temperature difference sub-region, so as to dynamically adjust the operating parameters of the power supply module, reduce the impact of temperature fluctuation on the operation of the power supply module, and ensure the stable operation of the outdoor screen.

[0045] In the preferred embodiment of this application, judging whether to correct the primary control strategy according to the environmental temperature field includes: Obtain the feedback data packet of the power supply module; Generate the environmental temperature field of the power supply module according to the feedback data packet; Generate the temperature difference compensation value d of the power supply module; d = µ i *(s i - s') 2]; Where r1 is the number of feedback points in the ambient temperature field; µ i Let s be the influence factor of the i-th feedback point; i s' represents the real-time temperature value obtained at the i-th feedback point; s' represents the standard ambient temperature value of the power module. The correction coefficient e is generated based on the primary control strategy; The corrected evaluation value w is generated based on the correction coefficient e and the temperature difference compensation value d, where w = e * d; Preset correction evaluation value threshold W1; If w > W1, modify the first-level control strategy.

[0046] Specifically, the primary control strategy generates a correction coefficient e, including: e=U2*[ g i *k i ]; Where U2 is the preset second conversion coefficient; θ3 is the number of compensation sub-strategies in the primary control strategy; g i k is the influence factor of the i-th compensation sub-strategy in the first-level control strategy; i This represents the operating load value of the i-th compensation sub-strategy in the primary control strategy.

[0047] Specifically, by presetting a second conversion coefficient, the correction coefficient e is kept within a preset range, and e is always greater than 1. Specifically, the influence factor of each compensation sub-strategy is set according to the area of ​​its corresponding temperature difference sub-region; the larger the area, the larger the corresponding influence factor. The mapping relationship between area and influence factor can be set based on historical parameters.

[0048] Specifically, by using a preset simulation model, each compensation sub-strategy is simulated, and the impact of the current compensation sub-strategy on the load of the battery module is determined based on the simulation results. The greater the load impact, the greater the corresponding operating load value.

[0049] Specifically, the higher the operating load value, the greater the interference of the current compensation sub-strategy with the ambient temperature near the battery module, and adjustments need to be made in a timely manner.

[0050] Specifically, multiple feedback points are set according to the device parameters of the power module, and temperature sensors are installed at each feedback point to monitor the ambient temperature around the power module in real time.

[0051] Specifically, the influence factor of each feedback point is set according to the distance between its location and the battery module. The shorter the distance, the larger the corresponding influence factor. The mapping relationship between distance and influence factor can be set according to historical parameters.

[0052] Specifically, the standard ambient temperature value refers to the midpoint of the ambient temperature range that will not interfere with the operation of the power supply module.

[0053] Specifically, a larger temperature difference compensation value indicates a greater degree of interference from the current ambient temperature on the battery module's operating efficiency and output stability, increasing the likelihood of battery module malfunction. Timely optimization of the primary control strategy is necessary to ensure the stable operation of the power module.

[0054] In another preferred embodiment of the outdoor screen power management method based on temperature difference compensation according to any of the above preferred embodiments, this preferred embodiment provides an outdoor screen power management method based on temperature difference compensation, including: The central control unit is used to establish a temperature sensing array for the outdoor screen, which includes multiple monitoring points. The monitoring unit includes multiple primary sub-modules, which are set up at various monitoring points. The monitoring unit is used to collect temperature data from each monitoring point; The monitoring unit also includes multiple secondary sub-modules, which are used to collect ambient temperature data of the power supply module; Specifically, both the primary and secondary sub-modules are preferably temperature sensors.

[0055] The central control unit includes: The first processing module is used to construct multiple temperature difference sub-regions based on the monitoring data packets of the temperature sensing array; The second processing module is used to determine whether each temperature difference sub-region generates a compensation command, and to set the first-level control strategy of the power module based on all compensation commands. The third processing module is used to construct the ambient temperature field of the power supply module and determine whether to modify the primary control strategy based on the ambient temperature field.

[0056] Specifically, both the first-level and second-level submodules are temperature sensors.

[0057] In a preferred embodiment of this application, the first processing module is further configured to include: Multiple feedback time points can be preset; Obtain the monitoring data packet for the current feedback time point; A primary temperature value sequence A is established based on the monitoring data package; A=(a1, a2…a…) i …a n ), where a i Let be the temperature value of the i-th monitoring point in the temperature sensing array; n is the number of monitoring points in the temperature transmission array. Aggregate all monitoring points according to the preset aggregation model and the first-level temperature difference value series A; Multiple temperature difference sub-regions are defined based on the polymerization results; Establish a temperature difference sub-region sequence B, B=(b1, b2…b i …b m ), where b i Let be the i-th temperature difference sub-region; m is the number of temperature difference sub-regions.

[0058] In a preferred embodiment of this application, the second processing module is further configured to: The standard operating temperature is set according to the preset compensation model; b is set sequentially according to the temperature difference sub-region sequence B. i For the target sub-region; Obtain the primary temperature values ​​of each monitoring point in the target sub-region based on the monitoring data packet; The secondary temperature value c is generated; c=a'; Where a' is the average of the first-level temperature values ​​of all monitoring points in the target sub-region; Generate temperature difference value h; h = η * (c1 - c) * Y(i); η=U1*[ (a 1i -a') 2 ]; Where θ1 is the number of monitoring points in the target sub-region; a 1i Let η be the first-level temperature value of the i-th monitoring point in the target sub-region; η be the temperature difference compensation coefficient; U1 be the preset first conversion coefficient; c1 be the standard temperature value; Y(i) be the selection coefficient; if (c1-c)<0, Y(i)=-1; if (c1-c)>0, Y(i)=1; Preset temperature difference threshold H1; If h > H1, generate a compensation instruction for the target sub-region, and generate a compensation sub-strategy for the target sub-region based on the compensation instruction; If h Check sequentially whether to generate compensation instructions for each target sub-region; The primary control strategy for the power supply module is set based on all compensation sub-strategies.

[0059] ​According to the first concept of this application, a temperature sensing array is constructed to sense the temperature changes of the outdoor screen in real time. By analyzing the monitoring data packets, multiple temperature difference sub-regions are constructed. Based on the actual temperature difference and operating characteristics of each temperature difference sub-region, corresponding compensation sub-strategies are set to dynamically adjust the operating parameters of the power module, reduce the impact of temperature fluctuations on the operation of the power module, and ensure the stable operation of the outdoor screen.

[0060] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. A power management method for outdoor screens based on temperature difference compensation, characterized in that, including: Establish a temperature sensing array for the outdoor screen, and construct multiple temperature difference sub-regions according to the monitoring data packets of the temperature sensing array; Judge whether each temperature difference sub-region generates a compensation instruction, and set the primary control strategy of the power supply module according to all the compensation instructions; Construct the ambient temperature field of the power supply module, and judge whether to correct the primary control strategy according to the ambient temperature field; Among them, the temperature sensing array includes multiple monitoring points.

2. The outdoor screen power management method based on temperature difference compensation as described in claim 1, characterized in that, Constructing multiple temperature difference sub-regions includes: Preset multiple feedback time nodes; Obtain the monitoring data packet of the current feedback time node; Establish a primary temperature value sequence A according to the monitoring data packet; A=(a1, a2…a…) i …a n ), where a i Let be the temperature value of the i-th monitoring point in the temperature sensing array; n is the number of monitoring points in the temperature transmission array. Aggregate all the monitoring points according to the preset aggregation model and the primary temperature difference value sequence A; Set multiple temperature difference sub-regions according to the aggregation result; Establish a temperature difference sub-region sequence B, B=(b1, b2…b i …b m ), where b i Let be the i-th temperature difference sub-region; m is the number of temperature difference sub-regions.

3. The outdoor screen power management method based on temperature difference compensation as described in claim 2, characterized in that, Judging whether each temperature difference sub-region generates a compensation instruction includes: Set the standard operating temperature according to the preset compensation model; b is set sequentially according to the temperature difference sub-region sequence B. i Define the target sub-region and generate secondary temperature values ​​for the target sub-region; Generate the temperature difference value h of the target sub-region according to the standard temperature value and the secondary temperature value; Preset the temperature difference value threshold H1; If h > H1, generate a compensation instruction for the target sub-region, and generate a compensation sub-strategy for the target sub-region according to the compensation instruction; If h < H1, do not generate a compensation instruction for the target sub-region; Judge in turn whether to generate compensation instructions for each target sub-region; Set the primary control strategy of the power supply module according to all the compensation sub-strategies.

4. The outdoor screen power management method based on temperature difference compensation as described in claim 3, characterized in that, Generating the temperature difference value h of the target sub-region includes: Obtain the primary temperature value of each monitoring point in the target sub-region according to the monitoring data packet; Generate the secondary temperature value c; c = a'; Among them, a' is the average value of the primary temperature values of all the monitoring points in the target sub-region; Generate the temperature difference value h; h = η * (c1 - c) * Y(i); η=U1*[ (a 1i -a') 2 ]; Where θ1 is the number of monitoring points in the target sub-region; a 1i Let η be the first-level temperature value of the i-th monitoring point in the target sub-region; η be the temperature difference compensation coefficient; U1 be the preset first conversion coefficient; c1 be the standard temperature value; Y(i) be the selection coefficient; if (c1-c)<0, Y(i)=-1; if (c1-c)>0, Y(i)=1.

5. The outdoor screen power management method based on temperature difference compensation as described in claim 4, characterized in that, Generating the compensation sub-strategy for the target sub-region according to the compensation instruction includes: Obtain the temperature difference value h of the target sub-region; Set the initial sub-strategy of the target sub-region according to the temperature difference value h and the preset compensation model; Generate the deviation evaluation value f of the target sub-region; f=[ b i *s i ]; Where θ2 is the number of deviations from the evaluation index; β i s is the influence factor of the i-th deviation from the evaluation index; i This is the reference value for the i-th deviation from the evaluation index in the target sub-region; Preset the deviation evaluation value threshold F1; If f > F1, generate a primary correction instruction for the initial sub-strategy, and generate a compensation sub-strategy for the target sub-region according to the correction result; If f < F1, set the initial sub-strategy as the compensation sub-strategy of the target sub-region.

6. The outdoor screen power management method based on temperature difference compensation as described in claim 5, characterized in that, Judging whether to correct the primary control strategy according to the ambient temperature field includes: Obtain the feedback data packet of the power supply module; Generate the ambient temperature field of the power supply module according to the feedback data packet; Generate the temperature difference compensation value d of the power supply module; d=[ µ i *(s i -s') 2 ]; Where r1 is the number of feedback points in the ambient temperature field; µ i Let s be the influence factor of the i-th feedback point; i s' represents the real-time temperature value obtained at the i-th feedback point; s' represents the standard ambient temperature value of the power module. Generate the correction coefficient e according to the primary control strategy; Generate the correction evaluation value w according to the correction coefficient e and the temperature difference compensation value d, w = e * d; Preset the correction evaluation value threshold W1; If w > W1, correct the primary control strategy.

7. The outdoor screen power management method based on temperature difference compensation as described in claim 6, characterized in that, Generating the correction coefficient e according to the primary control strategy includes; e=U2*[ g i *k i ]; Where U2 is the preset second conversion coefficient; θ3 is the number of compensation sub-strategies in the primary control strategy; g i k is the influence factor of the i-th compensation sub-strategy in the first-level control strategy; i This represents the operating load value of the i-th compensation sub-strategy in the primary control strategy.

8. An outdoor screen power management system based on temperature difference compensation, employing the outdoor screen power management method based on temperature difference compensation as described in any one of claims 1-7, characterized in that, including: The central control unit is used to establish a temperature sensing array for the outdoor screen, and the temperature sensing array includes multiple monitoring points; The monitoring unit includes multiple primary sub-modules, and the primary sub-modules are arranged at each monitoring point; The monitoring unit is used to collect the temperature data of each monitoring point; The monitoring unit further includes multiple secondary sub-modules, and the secondary sub-modules are used to collect the ambient temperature data of the power supply module; The central control unit includes: The first processing module is used to construct multiple temperature difference sub-regions according to the monitoring data packets of the temperature sensing array; The second processing module is used to determine whether compensation instructions are generated for each temperature difference sub-region, and set the primary control strategy of the power supply module according to all the compensation instructions; The third processing module is used to construct the ambient temperature field of the power supply module, and determine whether to correct the primary control strategy according to the ambient temperature field.

9. The outdoor screen power management system based on temperature difference compensation as described in claim 8, characterized in that, The first processing module is further used to include: Preset multiple feedback time nodes; Obtain the monitoring data packet of the current feedback time node; Establish a primary temperature value sequence A according to the monitoring data packet; A=(a1, a2…a…) i …a n ), where a i Let be the temperature value of the i-th monitoring point in the temperature sensing array; n is the number of monitoring points in the temperature transmission array. Aggregate all monitoring points according to the preset aggregation model and the primary temperature difference value sequence A; Set multiple temperature difference sub-regions according to the aggregation result; Establish a temperature difference sub-region sequence B, B=(b1, b2…b i …b m ), where b i Let be the i-th temperature difference sub-region; m is the number of temperature difference sub-regions.

10. The outdoor screen power management system based on temperature difference compensation as described in claim 9, characterized in that, The second processing module is further used to: Set the standard operating temperature according to the preset compensation model; b is set sequentially according to the temperature difference sub-region sequence B. i For the target sub-region; Obtain the primary temperature values of each monitoring point in the target sub-region according to the monitoring data packet; Generate a secondary temperature value c; c = a'; where a' is the average value of the primary temperature values of all monitoring points in the target sub-region; Generate a temperature difference value h; h = η * (c1 - c) * Y(i); η=U1*[ (a 1i -a') 2 ]; Where θ1 is the number of monitoring points in the target sub-region; a 1i Let η be the first-level temperature value of the i-th monitoring point in the target sub-region; η be the temperature difference compensation coefficient; U1 be the preset first conversion coefficient; c1 be the standard temperature value; Y(i) be the selection coefficient; if (c1-c)<0, Y(i)=-1; if (c1-c)>0, Y(i)=1; Preset a temperature difference value threshold H1; If h > H1, generate a compensation instruction for the target sub-region, and generate a compensation sub-strategy for the target sub-region according to the compensation instruction; If h < H1, do not generate a compensation instruction for the target sub-region; Judge in sequence whether compensation instructions are generated for each target sub-region; Set the primary control strategy of the power supply module according to all the compensation sub-strategies.

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