Low-blue-light blackboard screen based on multifunctional interaction

Abstract

The invention relates to the technical field of display and touch control, and discloses a low-blue-light blackboard screen based on multifunctional interaction, which comprises a touch display of which the back four-corner driving device can drive and adjust the included angle with a wall body; the front three-angle image acquisition module acquires image data; the processing module collects data to obtain display and reflective area data, establishes an illumination model to calculate a light source direction, determines an optimal included angle and brightness according to a preset corresponding relation, and generates an adjustment instruction; and the central control module receives the instruction to synchronously control the driving device and the display to adjust angle and brightness. Through cooperation of the multi-image acquisition module and the processing module, the display angle and brightness of the touch display are automatically adjusted according to the light source direction, light reflection is reduced, the display effect is optimized, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the field of display and touch technology, and in particular to a low-blue-light blackboard screen based on multi-functional interaction. Background Art

[0002] In educational informatization and smart office scenarios, low-blue-light blackboard screens, a combination of traditional blackboards and electronic display technologies, are widely used due to their high-definition display and eye-health features. However, they face challenges optimizing display angles and visual effects in complex lighting environments. Currently, they rely primarily on manual or simple mechanical adjustment of the display angle, which makes it difficult to accurately adapt to environmental changes, resulting in cumbersome operation and a poor visual experience.

[0003] Existing technologies often rely on a single light sensor to capture ambient light data. This fails to fully capture the distribution and intensity of reflective light on the screen surface. Furthermore, they lack in-depth analysis of the relationship between display brightness, reflective area, and rotation angle, and fail to establish a dynamic adjustment model. This makes low-blue light blackboard screens prone to localized reflections and blurred content in scenes with multiple light sources or strong lighting, and their adjustment accuracy and intelligence are insufficient.

[0004] Therefore, it is necessary to design a low-blue light blackboard screen based on multi-functional interaction. By setting three image acquisition units at different angles to capture and display images in real time, combined with the reflection intensity-rotation angle mapping model established by the analysis module, it is used to solve the problem that the blackboard screen in traditional teaching equipment is prone to local reflection and blurred content in multiple light sources or strong light scenes. Summary of the Invention

[0005] In view of this, the present invention proposes a low-blue light blackboard screen based on multi-functional interaction, which aims to solve the problem that the blackboard screen in traditional teaching equipment is prone to local reflection and blurred content in multiple light sources or strong light scenes.

[0006] The present invention proposes a low blue light blackboard screen based on multifunctional interaction, comprising: A touch display, used to receive user touch operations and display images; A driving device is provided at the four corners of the back of the touch display, one end of the driving device is fixed to the wall, and the other end is connected to the back of the touch display, and the driving device is used to drive the touch display to move so as to adjust the angle between the touch display and the wall; The first image acquisition module, the second image acquisition module, and the third image acquisition module are respectively arranged at three different angles in front of the touch display, so that different angles are formed between each image acquisition module and the touch display, and each image acquisition module is used to acquire image data of the touch display from a different angle; a processing module electrically connected to the touch display, the drive device, and each image acquisition module, respectively, the processing module being configured to collect image data acquired from different angles by the first image acquisition module, the second image acquisition module, and the third image acquisition module, and to obtain display data and reflective area data of the touch display based on the image data; the processing module being further configured to establish a lighting model using the reflective area data to calculate the direction of the light source, and then, based on a predetermined correspondence between the light source direction and the optimal display angle of the screen, substitute the calculated light source direction into the correspondence, determine the angle between the touch display and the wall and the display brightness of the touch display under the current light source direction, and generate an angle adjustment control instruction and a brightness adjustment instruction; The central control module is electrically connected to the touch display and the rotation drive device respectively. The central control module is used to receive the angle adjustment control instructions and brightness adjustment instructions of the processing module, and synchronously control the drive device to adjust the angle between the touch display and the wall and the display brightness of the touch display.

[0007] Furthermore, the driving device is provided with a frame, and the frame is provided with clamps at the four corners near the touch display, and the clamps are used to fix the relative position between the touch display and the frame. The side of the frame away from the touch display is provided with a universal joint, and the universal joint is rotatably connected to the frame. The universal joint is movably connected to one end of a retractable hydraulic rod, and the end of the hydraulic rod away from the universal joint is fastened to the wall bolts.

[0008] Furthermore, sun visors are provided on both sides of the touch display, and photosensors are provided on the edges of the sun visors. The photosensors are linked with each image acquisition module to dynamically adjust the deployment angle of the sun visors according to the reflective area data analyzed by the processing module. The sun visors are electrically connected to the processing module and the central control module respectively.

[0009] Furthermore, the sun visors on both sides are connected to the touch display via a rotating shaft, and a steering gear is provided at the top end of the rotating shaft.

[0010] Furthermore, when the light sensor and the image acquisition module are linked to adjust the deployment angle of the sun visor, the following steps are included: each of the image acquisition modules acquires image information of the reflective area, and the processing module extracts the area S1 and the reflective intensity I1 of the reflective area; a standard reflective area S0 and a standard reflective intensity I0 are preset, as well as a first area difference interval [ΔS1, ΔS2] and a first intensity difference interval [ΔI1, ΔI2]; The processing module compares the reflective area S1 with the standard reflective area S0, and the reflective intensity I1 with the standard reflective intensity I0, to determine whether the sun visor adjustment meets expectations; When both conditions S1≤S0 and I1≤I0 are satisfied, it is determined that the sun visor adjustment has reached the expected state, and the processing module sends a maintenance instruction to the central control module; When any of the conditions S1>S0 and I1>I0 are met, calculate the area difference ΔS=|S1-S0| and the intensity difference ΔI=|I1-I0|: If any of the conditions ΔS∈[ΔS1,ΔS2] and ΔI∈[ΔI1,ΔI2] are met, the processing module sends a command to the central control module to drive the sun visor to adjust the angle Δα1; If any of the conditions ΔS>[ΔS1, ΔS2] and ΔI>[ΔI1, ΔI2] are met, the processing module sends a command to the central control module to drive the sun visor to adjust the angle Δα2; Among them, Δα1<Δα2, and the angle of the sun visor after adjustment must be within the range of [αmin,αmax].

[0011] Furthermore, after the sun visor is adjusted, the method further includes: each of the image acquisition modules acquires reflective area data again, the processing module calculates the adjusted reflective area S2 and reflective intensity I2, and presets a re-inspection area threshold S3 and a re-inspection intensity threshold I3; The processing module compares the reflection area S2 with the re-inspection area threshold S3, and the reflection intensity I2 with the re-inspection intensity threshold I3, to determine whether the sun visor adjustment achieves the expected effect; When both conditions S2≤S3 and I2≤I3 are satisfied, it is determined that the sun visor adjustment has achieved the expected effect, and the processing module sends a maintenance instruction to the central control module; When any one of the conditions S2>S3 and I2>I3 is met, the processing module generates an angle adjustment control instruction, and the central control module controls the driving device to adjust the angle between the touch display and the wall according to the instruction.

[0012] When the driving device adjusts the angle between the touch display and the wall, the processing module calculates the target angle θ0 according to the illumination model and obtains the current angle θ1; presets a first angle difference interval [Δθ1, Δθ2] and a second angle difference interval [Δθ3, Δθ4]; By calculating the angle difference Δθ=|θ1-θ0|, we can judge whether the angle adjustment is as expected: When Δθ=0, it is determined that the angle adjustment has reached the expected state, and the processing module sends a maintenance instruction to the central control module; When Δθ≠0; If Δθ∈[Δθ1,Δθ2], the driving device adjusts the angle Δβ1; If Δθ∈[Δθ3,Δθ4], the driving device adjusts the angle Δβ2; Among them, Δβ1<Δβ2, and the angle after adjustment must be within the range of [θmin,θmax].

[0013] Furthermore, after the driving device adjusts the angle between the touch display and the wall, the method further includes: each of the image acquisition modules acquires display screen information, and the processing module calculates the screen reflectivity R1 and the text clarity W1; and presets a standard reflectivity R0 and a standard clarity threshold W0; The processing module compares the image reflectivity R1 with the standard reflectivity R0, and the text clarity W1 with the standard clarity threshold W0 to determine whether the angle adjustment achieves the expected effect: When both conditions R1≤R0 and W1≥W0 are satisfied, it is determined that the angle adjustment has achieved the expected effect, and the processing module sends a maintenance instruction to the central control module; When any one of the conditions R1>R0 and W1<W0 is met, the processing module generates a brightness adjustment instruction, and the central control module adjusts the display brightness of the touch display according to the instruction.

[0014] Furthermore, when the central control module adjusts the display brightness of the touch display, the processing module calculates the target brightness L0 according to the ambient light data and obtains the current brightness L1; presets a first brightness difference interval [ΔL1, ΔL2] and a second brightness difference interval [ΔL3, ΔL4]; The processing module determines whether the brightness adjustment meets expectations by calculating the brightness difference ΔL=|L1-L0|; When ΔL=0, it is determined that the brightness adjustment reaches the expected level, and the processing module sends a maintenance instruction to the central control module; When ΔL≠0; If ΔL∈[ΔL1,ΔL2], the processing module sends an instruction to the central control module to adjust the brightness Δγ1; If ΔL∈[ΔL3,ΔL4], the processing module sends an instruction to the central control module to adjust the brightness Δγ2; Where Δγ1<Δγ2, and the brightness after adjustment must be within the range of [Lmin,Lmax].

[0015] Furthermore, after the central control module adjusts the display brightness of the touch display, it also includes: each of the image acquisition modules acquires display screen data, the processing module calculates the screen glare value G1 and color restoration degree P1; presets a standard glare value G0 and a restoration degree threshold P0; The processing module compares the image glare value G1 with the standard glare value G0, the color restoration degree P1 with the restoration degree threshold P0, and determines whether the brightness adjustment achieves the expected effect; When both conditions G1≤G0 and P1≥P0 are satisfied, it is determined that the brightness adjustment achieves the expected effect, and the processing module sends a maintenance instruction to the central control module; When any one of the conditions G1>G0 and P1<P0 is met, the processing module generates a contrast adjustment instruction, and the central control module adjusts the color contrast of the touch display according to the instruction.

[0016] Furthermore, when the central control module adjusts the color contrast of the touch display, the processing module calculates the current contrast Cn and the target contrast C0; presets a first contrast difference interval [ΔC1, ΔC2] and a second contrast difference interval [ΔC3, ΔC4]; The processing module determines whether the contrast meets expectations by calculating the contrast difference ΔC=|Cn-C0|; When ΔC=0, it is determined that the contrast adjustment has reached the expected state, and the processing module sends a maintenance instruction to the central control module; When ΔC≠0; If ΔC∈[ΔC1,ΔC2], the processing module adjusts the contrast Δδ1; If ΔC∈[ΔC3,ΔC4], the processing module adjusts the contrast Δδ2; Where Δδ1<Δδ2, and the contrast after adjustment must be within the range of [Cmin, Cmax].

[0017] Furthermore, after the central control module adjusts the color contrast of the touch display, it also includes: the image acquisition module obtains the user's touch operation data, the processing module calculates the operation false touch rate E1 and the response delay T1; presets the standard false touch rate E0 and the standard delay threshold T0; Compare the false touch rate E1 with the standard false touch rate E0, and the response delay T1 with the standard delay threshold T0 to determine whether the full process adjustment achieves the expected effect: When both conditions E1≤E0 and T1≤T0 are met, it is determined that the full process adjustment has achieved the expected effect, and the processing module sends a system end adjustment instruction to the central control module; When any one of the conditions E1>E0 and T1>T0 is met, the processing module sends a recalibration instruction to the central control module to restart the full process adjustment of the sun visor to touch performance.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The processing module calculates the light source direction and determines the optimal display angle and brightness based on the image data obtained by the image acquisition module, automatically adjusting the angle and brightness of the touch display, effectively reducing reflections and ensuring clear screen display. Regardless of the lighting environment, it can provide users with a comfortable, glare-free visual experience.

[0019] 2. Three image acquisition modules, positioned at different angles, capture image data from the touch display from multiple dimensions. Compared to a single acquisition method, the information obtained is more comprehensive and accurate. This enables the processing module to more accurately analyze display data and reflective area data, providing a reliable basis for subsequent illumination model development and parameter calculations.

[0020] 3. The touch display, drive unit, image acquisition module, processing module, and central control module work closely together to form an efficient whole. The central control module receives instructions from the processing module and synchronously controls the touch display and drive unit, achieving rapid response and precise adjustment. This not only improves the system's automation level, but also enhances its stability and reliability, improving overall operational efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings: Figure 1 This is a functional block diagram of a low-blue-light blackboard screen based on multi-functional interaction provided by an embodiment of the present invention; Figure 2 A schematic structural diagram of a low-blue-light blackboard screen based on multi-functional interaction provided by an embodiment of the present invention; Figure 3 A schematic diagram of the back structure of a multi-functional interactive low-blue light blackboard screen provided by an embodiment of the present invention; Among them, 100-touch display; 200-sun visor; 210-steering gear; 220-rotating shaft; 300-driving device; 310-hydraulic rod; 320-clamp; 330-universal joint; 340-frame; 400-wall. DETAILED DESCRIPTION

[0022] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0023] See Figure 1-Figure 3As shown, an embodiment of the present invention proposes a low blue light blackboard screen based on multi-functional interaction, including: a touch display 100, a driving device 300, a first image acquisition module, a second image acquisition module, a third image acquisition module, a processing module and a central control module.

[0024] Specifically, the touch display 100 is used to receive a user's touch operation and display an image; The driving device 300 is provided at the four corners of the back of the touch display 100. One end of the driving device 300 is fixed to the wall 400, and the other end is connected to the back of the touch display 100. The driving device 300 is used to drive the touch display 100 to move so as to adjust the angle between the touch display 100 and the wall 400. The first image acquisition module, the second image acquisition module, and the third image acquisition module are respectively arranged at three different angles in front of the touch display 100, so that different angles are formed between each image acquisition module and the touch display 100, and each image acquisition module is used to capture image data of the touch display 100 from a different angle; a processing module electrically connected to the touch display 100, the drive device 300, and each image acquisition module, respectively; the processing module is used to collect image data acquired from different angles by the first image acquisition module, the second image acquisition module, and the third image acquisition module, and obtain display data and reflective area data of the touch display 100 based on the image data; the processing module is further used to establish a lighting model using the reflective area data to calculate the direction of the light source, and then substitute the calculated light source direction into a predetermined correspondence between the light source direction and the optimal display angle of the screen, determine the angle between the touch display 100 and the wall 400 and the display brightness of the touch display 100 under the current light source direction, and generate an angle adjustment control instruction and a brightness adjustment instruction; The central control module is electrically connected to the touch display 100 and the rotation drive device 300 respectively. The central control module is used to receive the angle adjustment control instructions and brightness adjustment instructions from the processing module, and synchronously control the drive device 300 to adjust the angle between the touch display 100 and the wall 400 and the display brightness of the touch display 100.

[0025] Specifically, the driving device 300 is provided with a frame 340, and the frame 340 is provided with clamps 320 at the four corners near the touch display 100. The clamps 320 are used to fix the relative position between the touch display 100 and the frame 340. The side of the frame 340 away from the touch display 100 is provided with a universal joint 330, and the universal joint 330 is rotatably connected to the frame 340. The universal joint 330 is movably connected to one end of the retractable hydraulic rod 310, and the end of the hydraulic rod 310 away from the universal joint 330 is fastened with bolts to the wall 400.

[0026] In the above embodiment, the processing module calculates the light source direction and determines the optimal display angle and brightness based on image data captured by the image acquisition module. This allows for automatic adjustment of the angle and brightness of the touch display 100, effectively reducing glare and ensuring clear screen display. Regardless of the lighting environment, the system provides users with a comfortable, glare-free visual experience. Three image acquisition modules, positioned at different angles, can capture image data from the touch display 100 from multiple dimensions, providing more comprehensive and accurate information than a single acquisition method. This enables the processing module to more accurately analyze display data and reflective area data, providing a reliable basis for subsequent illumination model development and parameter calculation. The touch display 100, drive device 300, image acquisition module, processing module, and central control module work closely together to form an efficient, integrated system. The central control module receives instructions from the processing module and synchronously controls the touch display 100 and drive device 300, achieving rapid response and precise adjustment. This not only improves the system's automation level, but also enhances its stability and reliability, improving overall operational efficiency.

[0027] Specifically, sun visors 200 are provided on both sides of the touch display 100, and photosensors are provided on the edges of the sun visors 200. The photosensors are linked with each image acquisition module, and the deployment angle of the sun visors 200 is dynamically adjusted according to the reflective area data analyzed by the processing module. The sun visors 200 are electrically connected to the processing module and the central control module respectively.

[0028] Specifically, the sun visors 200 on both sides are connected to the touch display 100 via a rotating shaft 220 , and a diverter 210 is provided at the top end of the rotating shaft 220 .

[0029] Specifically, the sun visors 200 on either side of the touch display 100, along with the photosensors located along its edges, form an intelligent light control system. When ambient light changes, the photosensors sense the light intensity and direction in real time and, in conjunction with the three image acquisition modules, synchronously feed this light data back to the processing module. The processing module, combined with the reflective area data captured by the image acquisition module, comprehensively analyzes the current lighting's impact on the screen display. If the reflective area is detected to be excessive, the processing module generates an angle adjustment command for the sun visor 200. The central control module then controls the sun visor 200's dynamic deployment, adjusting its angle to block out strong light. Furthermore, the visor 200's angle changes coordinate with the adjustments made by the drive unit 300 and the touch display 100. For example, when the sun visor 200 is deployed, the drive unit 300 can further fine-tune the screen angle, while the central control module simultaneously optimizes display brightness, minimizing ambient light interference in multiple dimensions and comprehensively improving the screen display quality and user experience.

[0030] The sun visors 200 on both sides of the touch display 100 in the above embodiment cooperate with edge light sensors and work in conjunction with the image acquisition module. Based on the reflective area data analyzed by the processing module, they sense changes in ambient light in real time and dynamically adjust the deployment angle, effectively blocking direct light. They work in synergy with the drive device 300 and the touch display 100 to reduce ambient light interference in multiple dimensions, further improving screen display clarity and user visual comfort.

[0031] Specifically, when the light sensor and the image acquisition module are linked to adjust the deployment angle of the sun visor 200, the following steps are included: each image acquisition module obtains image information of the reflective area, and the processing module extracts the area S1 and the reflective intensity I1 of the reflective area; presets a standard reflective area S0 and a standard reflective intensity I0, as well as a first area difference interval [ΔS1, ΔS2] and a first intensity difference interval [ΔI1, ΔI2]; The processing module compares the reflective area S1 with the standard reflective area S0, and the reflective intensity I1 with the standard reflective intensity I0, to determine whether the adjustment of the sun visor 200 meets expectations; When both conditions S1≤S0 and I1≤I0 are satisfied, it is determined that the adjustment of the sun visor 200 has reached the expected state, and the processing module sends a maintenance instruction to the central control module; When any of the conditions S1>S0 and I1>I0 are met, calculate the area difference ΔS=|S1-S0| and the intensity difference ΔI=|I1-I0|: If any of the conditions ΔS∈[ΔS1,ΔS2] and ΔI∈[ΔI1,ΔI2] are met, the processing module sends a command to the central control module to drive the sun visor 200 to adjust the angle Δα1; If any of the conditions ΔS>[ΔS1, ΔS2] and ΔI>[ΔI1, ΔI2] are met, the processing module sends a command to the central control module to drive the sun visor 200 to adjust the angle Δα2; Among them, Δα1<Δα2, and the angle of the sun visor 200 after adjustment must be within the range of [αmin,αmax].

[0032] It is understandable that the angle adjustment of the sun visor 200 can be done individually or simultaneously, and both adjustment methods are to control the rotating shaft 220 through the steering gear 210 to drive the sun visor 200 to adjust.

[0033] Specifically, in actual operation, after the image acquisition module captures image information of the reflective area of the touch display 100, the processing module quickly extracts the reflective area S1 and reflective intensity I1. The system pre-sets a standard reflective area S0 and standard reflective intensity I0, as well as a first area difference range [ΔS1, ΔS2] and a first intensity difference range [ΔI1, ΔI2] to define different adjustment levels. The specific judgment process is as follows: First, the actual detected S1 is compared with S0, and I1 with I0. If S1 is less than or equal to S0 and I1 is less than or equal to I0, it means that the current sun visor 200 angle has controlled the reflective effect within the ideal range. At this time, the processing module sends a maintenance command to the central control module to maintain the current state of the sun visor 200. If S1 is greater than S0 or I1 is greater than I0, the processing module further calculates the area difference ΔS = |S1-S0| and the intensity difference ΔI = |I1-I0|. If ΔS is within the range [ΔS1, ΔS2], or ΔI is within the range [ΔI1, ΔI2], indicating that the degree of glare exceeds the standard but the deviation is small, the processing module will send a command to drive the sun visor 200 to fine-tune the angle Δα1. If ΔS exceeds the range [ΔS1, ΔS2], or ΔI exceeds the range [ΔI1, ΔI2], indicating a more severe glare problem, a command will be sent to drive the sun visor 200 to adjust to a larger angle Δα2 (Δα1 < Δα2). In addition, after each adjustment, the system automatically verifies the sun visor 200 angle to ensure it remains within the safe and effective range of [αmin, αmax]. This prevents over-adjustment from affecting the normal operation of the sun visor 200 or interfering with other components. This enables refined and intelligent adjustment of the sun visor 200 angle, effectively resolving screen glare issues.

[0034] In the above embodiment, the system can accurately obtain the area and intensity data of the reflective area through the linkage of the photosensitive sensor and the image acquisition module, compare it with the preset standard value and the difference range, and adjust the angle of the sun visor 200 according to the different degrees of exceeding the standard. A small adjustment amount Δα1 is used for slight exceeding the standard, and a larger adjustment amount Δα2 is used for serious exceeding the standard. At the same time, the angle adjustment range is strictly limited to achieve refined and intelligent dynamic control of the sun visor 200 angle, effectively reduce screen reflection, and improve display effect and user experience.

[0035] Specifically, after the sun visor 200 is adjusted, the following further comprises: each image acquisition module acquires reflective area data again, the processing module calculates the adjusted reflective area S2 and reflective intensity I2, and presets a re-inspection area threshold S3 and a re-inspection intensity threshold I3; The processing module compares the reflection area S2 with the re-inspection area threshold S3, and the reflection intensity I2 with the re-inspection intensity threshold I3, to determine whether the adjustment of the sun visor 200 achieves the expected effect; When both conditions S2≤S3 and I2≤I3 are satisfied, it is determined that the adjustment of the sun visor 200 has achieved the expected effect, and the processing module sends a maintenance instruction to the central control module; When any one of the conditions S2>S3 and I2>I3 is satisfied, the processing module generates an angle adjustment control instruction, and the central control module controls the driving device 300 to adjust the angle between the touch display 100 and the wall 400 according to the instruction.

[0036] Specifically, after the sun visor 200 completes its angle adjustment, the system immediately initiates a recheck process: the image acquisition module recollects data from the reflective area of the touch display 100, and the processing module then calculates the adjusted reflective area S2 and reflective intensity I2. The system also presets a recheck area threshold S3 and a recheck intensity threshold I3, which serve as key criteria for determining whether the adjustment has met the required standards. The specific judgment process involves comparing S2 with S3, and I2 with I3. If S2 is less than or equal to S3 and I2 is less than or equal to I3, the sun visor 200 angle adjustment has effectively controlled reflective effects and achieved the desired effect. The processing module then sends a maintain command to the central control module, maintaining the current sun visor 200 angle and touch display 100 status. If S2 is greater than S3 or I2 is greater than I3, adjusting the sun visor 200 angle alone cannot completely resolve the reflective effect. At this point, the processing module generates an angle adjustment control command and sends it to the drive device 300. The drive device 300 adjusts the angle between the touch display 100 and the wall 400 accordingly. By changing the screen's orientation and combining it with the sun visor 200's shading function, the screen's lighting environment is optimized from multiple angles, ensuring that the touch display 100 can achieve a glare-free, high-definition display even in complex lighting conditions, significantly improving the user experience and the system's adaptability.

[0037] After the sun visor 200 of the above embodiment is adjusted, the image acquisition module collects reflection data again, and the processing module calculates the actual reflection area and intensity, and compares it with the preset re-inspection threshold to accurately determine the adjustment effect. If the standard is met, the current state is maintained. If the standard is not met, the driving device 300 is linked to adjust the angle between the touch display 100 and the wall 400, forming a closed-loop optimization mechanism of "sun visor 200 adjustment - effect re-inspection - screen angle linkage", which comprehensively eliminates reflection interference and ensures that the screen always maintains the best display state. Specifically, when the driving device 300 adjusts the angle between the touch display 100 and the wall 400, the processing module calculates the target angle θ0 according to the illumination model and obtains the current angle θ1; presets a first angle difference interval [Δθ1, Δθ2] and a second angle difference interval [Δθ3, Δθ4]; By calculating the angle difference Δθ=|θ1-θ0|, we can judge whether the angle adjustment is as expected: When Δθ=0, it is determined that the angle adjustment has reached the expected state, and the processing module sends a maintenance instruction to the central control module; When Δθ≠0; If Δθ∈[Δθ1,Δθ2], the driving device 300 adjusts the angle Δβ1; If Δθ∈[Δθ3,Δθ4], the driving device 300 adjusts the angle Δβ2; Among them, Δβ1<Δβ2, and the angle after adjustment must be within the range of [θmin,θmax].

[0038] Specifically, when the driving device 300 adjusts the angle of the touch display 100, the processing module first calculates the target angle θ0 and obtains the current angle θ1, compares it with the preset first and second angle difference intervals [Δθ1, Δθ2] and [Δθ3, Δθ4], and determines the adjustment demand by calculating Δθ=|θ1-θ0|. When Δθ is 0, the status quo is maintained. When it is not 0, graded adjustments are made according to Δβ1 and Δβ2 (Δβ1<Δβ2) according to the deviation interval, and the adjusted angle is ensured to be within the safety range of [θmin, θmax]. After adjustment, closed-loop optimization is formed through image acquisition and re-inspection to achieve accurate and efficient angle adjustment.

[0039] It can be understood that when Δθ≠0, if Δθ∈[Δθ1,Δθ2], the hydraulic rod 310 in the drive device 300 is extended and retracted to drive the universal joint 330 to rotate, adjusting the angle Δβ1. If Δθ∈[Δθ3,Δθ4], the angle Δβ2 is adjusted (where Δβ1<Δβ2). During the adjustment process, the relative position of the touch display 100 and the frame 340 is fixed by the clamp 320, and the adjusted angle must be within the range of [θmin,θmax], so as to achieve precise adjustment of the angle between the touch display 100 and the wall 400.

[0040] When the driving device 300 in the above embodiment adjusts the angle of the touch display 100, the processing module determines the target angle based on the illumination model, calculates the angle difference by comparing it with the current angle, and uses a small adjustment amount Δβ1 for small angle deviations and a large adjustment amount Δβ2 for large angle deviations according to the preset different angle difference ranges to perform graded and precise adjustments. At the same time, the adjusted angle range is strictly limited, which not only avoids over-adjustment but also can quickly correct the angle deviation, ensuring that the touch display 100 is always at the optimal display angle, effectively improving the display effect and system stability.

[0041] Specifically, after the driving device 300 adjusts the angle between the touch display 100 and the wall 400, the device further includes: each image acquisition module obtains display image information, and the processing module calculates the image reflectivity R1 and the text clarity W1; presets the standard reflectivity R0 and the standard clarity threshold W0; The processing module compares the image reflectivity R1 with the standard reflectivity R0, and the text clarity W1 with the standard clarity threshold W0 to determine whether the angle adjustment achieves the expected effect: When both conditions R1≤R0 and W1≥W0 are met, it is determined that the angle adjustment has achieved the expected effect, and the processing module sends a maintenance instruction to the central control module; When any one of the conditions R1>R0 and W1<W0 is satisfied, the processing module generates a brightness adjustment instruction, and the central control module adjusts the display brightness of the touch display 100 according to the instruction.

[0042] Specifically, after the driver 300 completes the angle adjustment of the touch display 100, the system immediately initiates the performance verification process. The image acquisition module rapidly captures the displayed image information, and the processing module performs in-depth analysis of the image, accurately calculating the image reflectivity R1 and text clarity W1. The system pre-sets key indicators for measuring display performance—standard reflectivity R0 and standard clarity threshold W0—as important criteria for determining whether the angle adjustment meets the standards.

[0043] The specific judgment process is as follows: the processing module carefully compares the calculated image reflectivity R1 with the standard reflectivity R0, and the text clarity W1 with the standard clarity threshold W0. When R1 is less than or equal to R0, and W1 is greater than or equal to W0, it indicates that the current angle adjustment of the touch display 100 has effectively improved the display effect and achieved the expected goal. At this time, the processing module sends a maintenance instruction to the central control module to keep the current module state unchanged. If R1 is greater than R0, or W1 is less than W0, it means that the ideal display effect cannot be fully achieved by angle adjustment alone. At this time, the processing module will generate a brightness adjustment instruction and send it to the central control module. The central control module accurately adjusts the brightness of the touch display 100 according to the instruction. By dynamically adjusting the screen brightness and coordinating with the adjusted display angle, the display image is further optimized, the interference of reflections on the vision is reduced, the clarity of the text is improved, and it is ensured that the touch display 100 can present a clear and comfortable display effect to the user in various lighting environments, significantly enhancing the system's adaptability and user experience.

[0044] After the driving device 300 in the above embodiment adjusts the angle of the touch display 100, the image acquisition module promptly captures the displayed image information, and the processing module accurately calculates the image reflectivity and text clarity, comparing them with preset standards. If both meet expectations, the current state is maintained. If either indicator falls short, the central control module dynamically adjusts the display brightness, forming an intelligent optimization closed loop of "angle adjustment-effect detection-brightness compensation." This effectively eliminates reflections and improves text clarity, comprehensively ensuring that the touch display 100 presents high-quality visual effects, significantly enhancing the user experience and system environmental adaptability.

[0045] Specifically, when the central control module adjusts the display brightness of the touch display 100, it includes: the processing module calculates the target brightness L0 according to the ambient light data and obtains the current brightness L1; presets a first brightness difference interval [ΔL1, ΔL2] and a second brightness difference interval [ΔL3, ΔL4]; The processing module determines whether the brightness adjustment meets the expectations by calculating the brightness difference ΔL=|L1-L0|; When ΔL=0, it is determined that the brightness adjustment has reached the expected level, and the processing module sends a maintenance instruction to the central control module; When ΔL≠0; If ΔL∈[ΔL1,ΔL2], the processing module sends a command to the central control module to adjust the brightness Δγ1; If ΔL∈[ΔL3,ΔL4], the processing module sends a command to the central control module to adjust the brightness Δγ2; Where Δγ1<Δγ2, and the brightness after adjustment must be within the range of [Lmin,Lmax].

[0046] Specifically, during the central control module's brightness adjustment of the touch display 100, the system implements a rigorous and intelligent dynamic adjustment mechanism. The processing module first uses the ambient light data and the illumination model to accurately calculate the target brightness L0, which is suitable for the current environment, and obtains the module's current brightness L1. At the same time, the system presets two key brightness difference intervals: the first brightness difference interval [ΔL1, ΔL2] is used to identify smaller brightness deviations, and the second brightness difference interval [ΔL3, ΔL4] targets larger brightness deviations (where ΔL1 < ΔL2 < ΔL3 < ΔL4), which serve as the triggering basis for different adjustment strategies.

[0047] The specific execution logic is as follows: the system determines the brightness adjustment status by calculating the brightness difference ΔL = |L1-L0|. When ΔL is 0, it indicates that the current brightness has accurately matched the target brightness. The processing module immediately sends a maintenance instruction to the central control module to maintain the current brightness setting. If ΔL is not 0, the system further determines the range in which ΔL is located. If ΔL is within [ΔL1, ΔL2], it means that the brightness deviation is small. The processing module will send an instruction to the central control module to fine-tune the brightness by a smaller adjustment amount Δγ1. If ΔL is within [ΔL3, ΔL4], it indicates that the brightness deviation is large. In this case, the central control module will adjust the brightness by a larger adjustment amount Δγ2 according to the instruction (Δγ1 < Δγ2).

[0048] In addition, to ensure the safety and effectiveness of brightness adjustment, after each adjustment, the system will automatically check whether the new brightness is within the safety threshold range of [Lmin, Lmax]. If it exceeds this range, the system will automatically correct it to the boundary value to avoid affecting the display effect and device life due to excessive brightness or darkness. After the adjustment is completed, the image acquisition module will also re-collect the picture data to assist in verifying the brightness adjustment effect, forming a complete closed loop of "calculation target-contrast difference-grading adjustment-boundary verification-effect feedback", realizing refined and adaptive adjustment of the brightness of the touch display 100, and ensuring that the screen can present a clear and comfortable display effect under all kinds of ambient light.

[0049] In the above embodiment, when adjusting the brightness of the touch display 100, the system accurately calculates the target brightness based on ambient light data, compares it with the current brightness to obtain a difference, and then, referring to preset brightness difference ranges, uses a small adjustment amount Δγ1 for minor brightness deviations and Δγ2 for larger deviations to perform graded and fine-tuned adjustments. The system also strictly limits the adjusted brightness range to avoid overbrightness or underbrightness. This mechanism prevents frequent and ineffective adjustments while quickly responding to significant brightness differences, enabling intelligent adaptive brightness adjustment. This ensures that the screen consistently presents a comfortable and clear display under varying ambient light conditions, significantly improving the user's visual experience and system stability.

[0050] Specifically, after the central control module adjusts the display brightness of the touch display 100, it also includes: each image acquisition module obtains display screen data, and the processing module calculates the screen glare value G1 and color restoration degree P1; presets the standard glare value G0 and the restoration degree threshold P0; The processing module compares the image glare value G1 with the standard glare value G0, and the color restoration degree P1 with the restoration degree threshold P0 to determine whether the brightness adjustment achieves the expected effect; When both conditions G1≤G0 and P1≥P0 are met, it is determined that the brightness adjustment has achieved the expected effect, and the processing module sends a maintenance instruction to the central control module; When any one of the conditions G1>G0 and P1<P0 is satisfied, the processing module generates a contrast adjustment instruction, and the central control module adjusts the color contrast of the touch display 100 according to the instruction.

[0051] Specifically, after the central control module completes the brightness adjustment of the touch display 100, the system quickly initiates the effect verification and in-depth optimization process. The image acquisition module immediately captures the display data, and the processing module uses a high-precision algorithm to quantify the image glare value G1 and color reproduction P1. The system pre-sets the core standards for measuring display quality—the standard glare value G0 and the color reproduction threshold P0—as key criteria for determining the effectiveness of brightness adjustment.

[0052] The specific determination process is as follows: The processing module carefully compares the calculated image glare value G1 with the standard glare value G0, and the color reproduction degree P1 with the reproduction degree threshold P0. If G1 is less than or equal to G0, and P1 is greater than or equal to P0, indicating that the current brightness adjustment has achieved the ideal display quality, the processing module immediately sends a maintenance command to the central control module to maintain the current brightness setting and display parameters.

[0053] If G1 is greater than G0, or P1 is less than P0, it means that high-quality display effects cannot be fully achieved through brightness adjustment alone. At this time, the processing module immediately starts the color contrast adjustment program of the touch display 100. By dynamically optimizing the color contrast, the system can further suppress the interference of glare on vision, while enhancing the realism and layering of the picture color, so that the display screen achieves a double balance in brightness and color dimensions. This progressive optimization mechanism of "brightness adjustment-effect detection-contrast optimization" ensures that the touch display 100 can present a clear picture with low glare and high restoration in all kinds of environments, significantly improving the user's visual comfort and information acquisition efficiency.

[0054] In the above embodiment, after the central control module adjusts the brightness of the touch display 100, the image acquisition module collects display data. The processing module then accurately calculates the glare value and color reproduction, comparing them to preset standards. If both indicators meet the standards, the current state is maintained. If either indicator falls short of expectations, color contrast adjustment is initiated. This forms an intelligent optimization chain of "brightness adjustment-effect evaluation-color optimization", effectively reducing glare interference and improving color fidelity, achieving multi-dimensional dynamic optimization of display effects, and providing users with a clearer, more comfortable, and realistic visual experience.

[0055] Specifically, when the central control module adjusts the color contrast of the touch display 100, it includes: the processing module calculates the current contrast Cn and the target contrast C0; presets a first contrast difference interval [ΔC1, ΔC2] and a second contrast difference interval [ΔC3, ΔC4]; The processing module determines whether the contrast meets expectations by calculating the contrast difference ΔC = |Cn-C0|; When ΔC=0, it is determined that the contrast adjustment has reached the expected level, and the processing module sends a maintenance instruction to the central control module; When ΔC≠0; If ΔC∈[ΔC1,ΔC2], the processing module adjusts the contrast Δδ1; If ΔC∈[ΔC3,ΔC4], the processing module adjusts the contrast Δδ2; Where Δδ1<Δδ2, and the contrast after adjustment must be within the range of [Cmin, Cmax].

[0056] Specifically, when the processing module adjusts the color contrast of the touch display 100, the system constructs a scientific and sophisticated adjustment system. First, the processing module accurately calculates the current contrast Cn through in-depth analysis of the display screen color parameters, and determines the adapted target contrast C0 based on the screen display requirements and ambient light conditions. At the same time, the system presets two key contrast difference ranges: the first contrast difference range [ΔC1, ΔC2] is used to define smaller contrast deviations, and the second contrast difference range [ΔC3, ΔC4] is used to identify larger contrast deviations (and ΔC1<ΔC2<ΔC3<ΔC4), which serve as trigger conditions for the differentiated adjustment strategy.

[0057] The specific implementation process is as follows: the system determines the current contrast state by calculating the contrast difference ΔC = |Cn-C0|. When ΔC is 0, indicating that the current contrast has accurately matched the target value, the processing module immediately sends a maintenance instruction to the central control module to maintain the current contrast setting. If ΔC is not 0, the system further determines the range in which ΔC is located. If ΔC is within [ΔC1, ΔC2], indicating a small contrast deviation, the processing module will fine-tune the contrast by a smaller adjustment amount Δδ1. If ΔC is within [ΔC3, ΔC4], indicating a large contrast deviation, the processing module will adjust the contrast by a larger adjustment amount Δδ2 (Δδ1 < Δδ2).

[0058] Furthermore, to ensure the safety and effectiveness of contrast adjustment, after each adjustment, the system automatically verifies whether the new contrast value is within the safety threshold range of [Cmin, Cmax]. If it exceeds this range, the system automatically corrects to the boundary value to avoid image distortion or display abnormalities due to excessive contrast adjustment. After the adjustment is completed, the image acquisition module will recapture the image data to assist in verifying the contrast adjustment effect, forming a complete closed loop of "calculation target - contrast difference - graded adjustment - boundary verification - effect feedback", realizing intelligent and precise adjustment of the color contrast of the touch display 100.

[0059] When adjusting color contrast, the processing module in the above embodiment accurately calculates the difference between the current and target contrast values and implements graded adjustments based on preset differential intervals. For minor deviations, a small adjustment of Δδ1 is used, while for larger deviations, an adjustment of Δδ2 is used. The adjusted contrast range is also strictly limited to avoid image distortion. This mechanism achieves intelligent dynamic optimization of contrast, preventing over-adjustment while quickly correcting display deviations. This ensures that the touch display 100 presents high-quality images with vibrant colors and clear layers in all scenarios, significantly improving visual perception and display quality.

[0060] Specifically, after the central control module adjusts the color contrast of the touch display 100, it also includes: an image acquisition module to obtain user touch operation data, a processing module to calculate the operation false touch rate E1 and the response delay T1; a preset standard false touch rate E0 and a standard delay threshold T0; Compare the false touch rate E1 with the standard false touch rate E0, and the response delay T1 with the standard delay threshold T0 to determine whether the full process adjustment achieves the expected effect: When both conditions E1≤E0 and T1≤T0 are met, it is determined that the full process adjustment has achieved the expected effect, and the processing module sends a system end adjustment instruction to the central control module; When any one of the conditions E1>E0 and T1>T0 is met, the processing module sends a recalibration instruction to the central control module to restart the sun visor 200 to the full process adjustment of the touch performance.

[0061] Specifically, after color contrast adjustment is complete, the system uses the user's operational experience as the ultimate validation criterion for the effectiveness of the entire adjustment process, establishing a rigorous closed-loop feedback mechanism. The image acquisition module captures user touch operation data in real time, while the processing module uses algorithms to accurately calculate the false touch rate (E1) and response delay (T1). The system also presets key performance indicators—the standard false touch rate (E0) and the standard delay threshold (T0)—as the core basis for determining the effectiveness of the adjustment.

[0062] The specific verification process is as follows: The processing module carefully compares the calculated false touch rate E1 with the standard false touch rate E0, and the response delay T1 with the standard delay threshold T0. If E1 is less than or equal to E0, and T1 is less than or equal to T0, it indicates that the entire process of adjusting the sun visor angle by 200 degrees, adjusting the screen angle, adjusting the brightness, and optimizing the color contrast has successfully achieved dual optimization of display quality and touch performance, meeting the expected goals. At this point, the processing module sends a system end adjustment command to the central control module, maintaining the current system parameter settings.

[0063] If E1 is greater than E0, or T1 is greater than T0, the full adjustment process fails to fully meet the user's operational needs, and there may be issues with touch recognition deviation or slow response due to changes in display parameters. At this point, the processing module immediately sends a recalibration command to the central control module, and the system automatically restarts the entire adjustment process, starting with adjusting the sun visor 200 degrees and continuing until touch performance optimization. Through this "adjustment-verification-feedback-restart" cycle, the system can continuously optimize the balance between display and interactive performance, ensuring that the touch display 100 always maintains high-definition display and sensitive operational response in complex environments.

[0064] After the color contrast is adjusted in the above embodiment, the system obtains the user's touch operation data through the image acquisition module, calculates the false touch rate and response delay and compares them with the preset standards, forming a closed-loop mechanism of "adjustment-verification-feedback". The adjustment is terminated when the standard is met. If the standard is not met, the sun visor 200 is restarted to calibrate the entire process to the touch performance, ensuring a dynamic balance between display parameter optimization and touch operation experience, effectively reducing the false touch rate, shortening the response delay, and providing users with a continuously smooth and accurate interactive experience.

[0065] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0066] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0067] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0068] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A low blue light blackboard screen based on multi-functional interaction, characterized in that: include: A touch display, used to receive user touch operations and display images; A driving device is provided at the four corners of the back of the touch display, one end of the driving device is fixed to the wall, and the other end is connected to the back of the touch display, and the driving device is used to drive the touch display to move so as to adjust the angle between the touch display and the wall; The first image acquisition module, the second image acquisition module, and the third image acquisition module are respectively arranged at three different angles in front of the touch display, so that different angles are formed between each image acquisition module and the touch display, and each image acquisition module is used to acquire image data of the touch display from a different angle; a processing module electrically connected to the touch display, the drive device, and each image acquisition module, respectively, the processing module being configured to collect image data acquired from different angles by the first image acquisition module, the second image acquisition module, and the third image acquisition module, and to obtain display data and reflective area data of the touch display based on the image data; the processing module being further configured to establish a lighting model using the reflective area data to calculate the direction of the light source, and then, based on a predetermined correspondence between the light source direction and the optimal display angle of the screen, substitute the calculated light source direction into the correspondence, determine the angle between the touch display and the wall and the display brightness of the touch display under the current light source direction, and generate an angle adjustment control instruction and a brightness adjustment instruction; The central control module is electrically connected to the touch display and the rotation drive device respectively. The central control module is used to receive the angle adjustment control instructions and brightness adjustment instructions of the processing module, and synchronously control the drive device to adjust the angle between the touch display and the wall and the display brightness of the touch display.

2. The multifunctional interactive low blue light blackboard screen according to claim 1, characterized in that: Sun visors are provided on both sides of the touch display, and photosensors are provided on the edges of the sun visors. The photosensors are linked with each image acquisition module and dynamically adjust the deployment angle of the sun visors according to the reflective area data analyzed by the processing module. The sun visors are electrically connected to the processing module and the central control module respectively.

3. The multifunctional interactive low blue light blackboard screen according to claim 2, characterized in that: When the light sensor and the image acquisition module are linked to adjust the sun visor deployment angle, the method includes: Each of the image acquisition modules acquires image information of the reflective area, and the processing module extracts the reflective area S1 and the reflective intensity I1; a standard reflective area S0 and a standard reflective intensity I0 are preset, as well as a first area difference interval [ΔS1, ΔS2] and a first intensity difference interval [ΔI1, ΔI2]; The processing module compares the reflective area S1 with the standard reflective area S0, and the reflective intensity I1 with the standard reflective intensity I0, to determine whether the sun visor adjustment meets expectations; When both conditions S1≤S0 and I1≤I0 are satisfied, it is determined that the sun visor adjustment has reached the expected state, and the processing module sends a maintenance instruction to the central control module; When any of the conditions S1>S0 and I1>I0 are met, calculate the area difference ΔS=|S1-S0| and the intensity difference ΔI=|I1-I0|: If any of the conditions ΔS∈[ΔS1,ΔS2] and ΔI∈[ΔI1,ΔI2] are met, the processing module sends a command to the central control module to drive the sun visor to adjust the angle Δα1; If any of the conditions ΔS>[ΔS1, ΔS2] and ΔI>[ΔI1, ΔI2] are met, the processing module sends a command to the central control module to drive the sun visor to adjust the angle Δα2; Among them, Δα1<Δα2, and the angle of the sun visor after adjustment must be within the range of [αmin,αmax].

4. The multifunctional interactive low blue light blackboard screen according to claim 3, characterized in that: After the sun visor is adjusted, the method further comprises: Each of the image acquisition modules acquires reflective area data again, and the processing module calculates the adjusted reflective area S2 and reflective intensity I2, and presets a re-inspection area threshold S3 and a re-inspection intensity threshold I3; The processing module compares the reflection area S2 with the re-inspection area threshold S3, and the reflection intensity I2 with the re-inspection intensity threshold I3, to determine whether the sun visor adjustment achieves the expected effect; When both conditions S2≤S3 and I2≤I3 are satisfied, it is determined that the sun visor adjustment has achieved the expected effect, and the processing module sends a maintenance instruction to the central control module; When any one of the conditions S2>S3 and I2>I3 is met, the processing module generates an angle adjustment control instruction, and the central control module controls the driving device to adjust the angle between the touch display and the wall according to the instruction.

5. The multifunctional interactive low blue light blackboard screen according to claim 4, characterized in that: When the driving device adjusts the angle between the touch display and the wall, it includes: The processing module calculates the target angle θ0 according to the illumination model and obtains the current angle θ1; presets a first angle difference interval [Δθ1, Δθ2] and a second angle difference interval [Δθ3, Δθ4]; By calculating the angle difference Δθ=|θ1-θ0|, we can judge whether the angle adjustment is as expected: When Δθ=0, it is determined that the angle adjustment has reached the expected state, and the processing module sends a maintenance instruction to the central control module; When Δθ≠0; If Δθ∈[Δθ1,Δθ2], the driving device adjusts the angle Δβ1; If Δθ∈[Δθ3,Δθ4], the driving device adjusts the angle Δβ2; Among them, Δβ1<Δβ2, and the angle after adjustment must be within the range of [θmin,θmax].

6. The multifunctional interactive low blue light blackboard screen according to claim 5, characterized in that: After the driving device adjusts the angle between the touch display and the wall, the device further includes: Each of the image acquisition modules acquires display screen information, and the processing module calculates the screen reflectivity R1 and the text clarity W1; a standard reflectivity R0 and a standard clarity threshold W0 are preset; The processing module compares the image reflectivity R1 with the standard reflectivity R0, and the text clarity W1 with the standard clarity threshold W0 to determine whether the angle adjustment achieves the expected effect: When both conditions R1≤R0 and W1≥W0 are satisfied, it is determined that the angle adjustment has achieved the expected effect, and the processing module sends a maintenance instruction to the central control module; When any one of the conditions R1>R0 and W1<W0 is met, the processing module generates a brightness adjustment instruction, and the central control module adjusts the display brightness of the touch display according to the instruction.

7. The multifunctional interactive low blue light blackboard screen according to claim 6, characterized in that: When the central control module adjusts the display brightness of the touch display, it includes: The processing module calculates the target brightness L0 according to the ambient light data and obtains the current brightness L1; presets a first brightness difference interval [ΔL1, ΔL2] and a second brightness difference interval [ΔL3, ΔL4]; The processing module determines whether the brightness adjustment meets expectations by calculating the brightness difference ΔL=|L1-L0|; When ΔL=0, it is determined that the brightness adjustment reaches the expected level, and the processing module sends a maintenance instruction to the central control module; When ΔL≠0; If ΔL∈[ΔL1,ΔL2], the processing module sends an instruction to the central control module to adjust the brightness Δγ1; If ΔL∈[ΔL3,ΔL4], the processing module sends an instruction to the central control module to adjust the brightness Δγ2; Where Δγ1<Δγ2, and the brightness after adjustment must be within the range of [Lmin,Lmax].

8. The multifunctional interactive low blue light blackboard screen according to claim 7, characterized in that: After the central control module adjusts the display brightness of the touch display, the further step includes: Each of the image acquisition modules acquires display screen data, and the processing module calculates the screen glare value G1 and color restoration degree P1; a standard glare value G0 and a restoration degree threshold value P0 are preset; The processing module compares the image glare value G1 with the standard glare value G0, the color restoration degree P1 with the restoration degree threshold P0, and determines whether the brightness adjustment achieves the expected effect; When both the conditions G1≤G0 and P1≥P0 are satisfied, it is determined that the brightness adjustment achieves the expected effect, and the processing module sends a maintenance instruction to the central control module; When any one of the conditions G1>G0 and P1<P0 is met, the processing module generates a contrast adjustment instruction, and the central control module adjusts the color contrast of the touch display according to the instruction.

9. The multifunctional interactive low blue light blackboard screen according to claim 8, characterized in that: When the central control module adjusts the color contrast of the touch display, it includes: The processing module calculates the current contrast Cn and the target contrast C0; presets a first contrast difference interval [ΔC1, ΔC2] and a second contrast difference interval [ΔC3, ΔC4]; The processing module determines whether the contrast meets expectations by calculating the contrast difference ΔC=|Cn-C0|; When ΔC=0, it is determined that the contrast adjustment has reached the expected state, and the processing module sends a maintenance instruction to the central control module; When ΔC≠0; If ΔC∈[ΔC1,ΔC2], the processing module adjusts the contrast Δδ1; If ΔC∈[ΔC3,ΔC4], the processing module adjusts the contrast Δδ2; Where Δδ1<Δδ2, and the contrast after adjustment must be within the range of [Cmin, Cmax].

10. The multifunctional interactive low blue light blackboard screen according to claim 9, characterized in that: After the central control module adjusts the color contrast of the touch display, it also includes: The image acquisition module acquires the user's touch operation data, and the processing module calculates the operation false touch rate E1 and the response delay T1; the standard false touch rate E0 and the standard delay threshold T0 are preset; Compare the false touch rate E1 with the standard false touch rate E0, and the response delay T1 with the standard delay threshold T0 to determine whether the full process adjustment achieves the expected effect: When both conditions E1≤E0 and T1≤T0 are met, it is determined that the full process adjustment has achieved the expected effect, and the processing module sends a system end adjustment instruction to the central control module; When any one of the conditions E1>E0 and T1>T0 is met, the processing module sends a recalibration instruction to the central control module to restart the full process adjustment of the sun visor to touch performance.

Images