Seamless splicing system for multiple screens

Abstract

The invention relates to the technical field of screen splicing, and provides a multi-screen seamless splicing system, comprising: a splicing display array, the splicing display array is formed by arranging a plurality of independent display units according to a preset array, and each display unit is configured with an independent receiving card and a temperature detection interface; the image preprocessing module comprises an image import unit, a block cutting unit and a color calibration unit, the image import unit supports 2D / 3D image data import, and the block cutting unit divides a target image into matched sub-image data according to the number of display units; the color calibration unit corrects the RGB values of the sub-images based on preset color gamut parameters. Precise elimination of spliced bright and dark lines and display consistency optimization are realized through cooperation of multiple modules, and the display quality is improved. A distortion correction unit of the image preprocessing module accurately corrects geometric deviation, and a color calibration unit ensures that the colors of adjacent units are consistent.

Description

Technical Field

[0001] This invention relates to the field of screen splicing technology, specifically to a seamless splicing system for multiple screens. Background Technology

[0002] Current multi-screen splicing technology is widely used in commercial displays, security monitoring, medical imaging, and other fields. Its core requirement is to achieve a large-size, high-resolution display effect by combining multiple small-sized display units. Most mainstream splicing solutions are based on hardware splicing and simple software calibration, reducing splicing marks by physically aligning the edges of the display units. However, due to limitations in the bezel design and installation precision of the display panel, it is difficult to completely eliminate the impact of gaps in practical applications.

[0003] The primary problem with existing technologies is the difficulty in eliminating bright and dark lines. Because the spacing between LEDs at the edges of adjacent display units is typically greater than the spacing within the unit, uneven light distribution results in noticeable light-dark boundaries when displaying solid colors or gradient images. Simultaneously, differences in backlight brightness consistency between different display units and interference from ambient light reflections further exacerbate the visual abruptness of these bright and dark lines, severely impacting the integrity and visual appeal of the displayed image. Secondly, existing systems lack a coordinated performance assurance mechanism. During prolonged high-load operation of multiple units, the LED panel temperature easily accumulates and rises. Traditional cooling solutions are mostly based on overall heat dissipation, failing to precisely control localized high-temperature areas. This can lead to some units experiencing brightness decay, color shift, or even hardware damage due to overheating. Furthermore, the lack of high-precision synchronous control between signal transmission and display drivers for each unit easily causes image delays and misalignments, especially when displaying dynamic videos or 3D images, resulting in a severe visual disconnect. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a seamless splicing system for multiple screens, solving problems such as insufficient integrity and visual appeal, and lack of collaborative performance assurance mechanisms.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-screen seamless splicing system, comprising: a splicing display array, wherein the splicing display array is composed of several independent display units arranged in a preset array, and each display unit is equipped with an independent receiving card and a temperature detection interface; The image preprocessing module includes an image import unit, a block cutting unit, and a color calibration unit. The image import unit supports the import of 2D / 3D image data. The block cutting unit divides the target image into matching sub-image data according to the number of display units. The color calibration unit corrects the RGB values ​​of the sub-images based on preset color gamut parameters. The real-time detection module consists of a high-definition image acquisition unit and a multi-point temperature acquisition unit. The high-definition image acquisition unit has a frame rate of no less than 60fps and is used to capture the complete display screen of the splicing array. The multi-point temperature acquisition unit obtains the temperature of the core area of ​​the lamp board of each display unit through a contact sensor. The intelligent control module includes a bright / dark line processing unit, a temperature control unit, and a synchronization coordination unit. The bright / dark line processing unit receives image data from the real-time detection module and calculates the brightness compensation value. The temperature control unit compares the detected temperature with a threshold and outputs a heat dissipation command. The synchronization coordination unit maintains the data transmission delay of each module to less than 10ms.

[0006] Preferably, the bright / dark line processing unit includes a position positioning subunit and a dynamic compensation subunit. The position positioning subunit identifies the coordinates of the splicing gap through edge pixel gradient analysis, and the dynamic compensation subunit calculates the brightness adjustment value of the light point based on the following formula:

[0007] in, This is the brightness adjustment value. This is the ambient light correction factor, with a value ranging from 0.8 to 1.2. This represents the average brightness of the non-slicing area. The measured brightness of the spliced ​​area is 255, which is the maximum value of 8-bit grayscale.

[0008] Preferably, the high-definition image acquisition unit uses a CMOS camera with a resolution of not less than 4K, the lens focal length can be adjusted in the range of 8-24mm, and the distance from the splicing display array is sufficient to ensure that the acquired image covers the entire display area and the pixel resolution at the splicing point is not less than 300dpi.

[0009] Preferably, the temperature control unit includes a threshold setting subunit and a graded execution subunit. The threshold setting subunit presets three temperature thresholds: a warning threshold of 45°C, a regulation threshold of 55°C, and a shutdown threshold of 65°C. The graded execution subunit corresponds to control commands for starting fan speed adjustment, reducing local brightness, and cutting off unit power.

[0010] Preferably, the image preprocessing module further includes a distortion correction unit, which corrects the geometric distortion of the sub-image based on the physical size and arrangement angle of the display unit through a perspective transformation algorithm, with a correction accuracy error of less than 0.1 pixels.

[0011] Preferably, the synchronization coordination unit adopts a clock synchronization protocol to control the signal output time difference of each display unit receiving card within 1μs, and supports the synchronous driving of up to 36 display units.

[0012] Preferably, it also includes a light field optimization module, which consists of a light-diffusing lens array and an angle adjustment unit. The light-diffusing lens array corresponds one-to-one with each display unit. The angle adjustment unit finely adjusts the lens tilt angle to optimize the light emission direction based on the compensation data of the bright and dark line processing unit. The adjustment accuracy of the tilt angle is 0.1°.

[0013] Preferably, the optical parameters of the homogenizing lens array satisfy the following: transmittance not less than 92%, haze less than 1%, and light homogenization is controlled through the following relationship:

[0014] in, To display the illuminance at a point on a plane, The initial light intensity of the light source. The effective area of ​​the lens, The distance from the light source to that point. is the lens transmittance coefficient.

[0015] Preferably, the multi-point temperature acquisition unit uses a PT1000 contact temperature sensor, with each display unit configured with 4 sensors, which are respectively installed at the four corners of the lamp board. The temperature detection accuracy is ±0.2℃, and the data sampling frequency is 10Hz.

[0016] Preferably, the intelligent control module further includes a fault diagnosis unit. This unit analyzes abnormal bright spots, dark areas, and sudden changes in temperature data in the image acquisition data to automatically identify splicing misalignment, lamp failure, and heat dissipation faults. The identification accuracy is not less than 95%, and a diagnostic report containing the fault location and type is generated.

[0017] This invention provides a seamless splicing system for multiple screens. It has the following advantages: 1. This invention achieves precise brightness control at the lamp point level by working in concert with a high-definition image acquisition unit and a bright / dark line processing unit. Based on edge pixel gradient analysis, it accurately locates the coordinates of the splicing gaps and dynamically calculates adjustment values ​​using a brightness compensation formula for ambient light correction. This eliminates visible bright / dark lines. Compared to traditional solutions that rely solely on physical alignment, this system solves the problem of uneven splicing from the fundamental level of light distribution. Even in demanding display scenarios such as solid colors and gradients, it can maintain the overall consistency of the image and achieve the visual experience of a single large screen.

[0018] 2. This invention adopts a multi-point temperature acquisition and hierarchical temperature control strategy. It monitors the temperature of each unit lamp board in real time through distributed sensors, and combines three-level thresholds to achieve stepped control of fan speed adjustment, local brightness reduction, and unit shutdown. This stabilizes the lamp board operating temperature. Compared with the traditional overall heat dissipation solution, it improves the response speed of local high temperature control, reduces the brightness decay rate of the display unit, and extends the service life.

[0019] 3. This invention further optimizes the uniformity of light emission through a uniform light lens array and an angle fine-tuning mechanism. Combined with the geometric calibration of the distortion correction unit, the system not only supports 2D planar display but also achieves high-fidelity 3D light field display. The resolution is maintained without loss of output, the field of view is improved, and the fault diagnosis unit can automatically identify problems such as splicing misalignment, lamp failure, and heat dissipation failure. It can generate a diagnostic report containing specific locations and solutions in a short time after a fault occurs, shortening the maintenance response time.

[0020] 4. This invention achieves coordinated control through zoned temperature control, dynamic brightness adjustment, and synchronous drive. While ensuring display quality, it can accurately allocate energy consumption according to the actual operating status of each unit. At the same time, the modular design allows the system to flexibly adapt to splicing arrays of different sizes without the need to re-customize hardware and firmware. It has extremely strong adaptability and significantly reduces deployment costs in different scenarios. Attached Figure Description

[0021] Figure 1 This is a system diagram of the present invention. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see the appendix Figure 1 This invention provides a seamless splicing system for multiple screens, comprising: A splicing display array consists of several independent display units arranged in a preset array, with each display unit equipped with an independent receiver card and temperature detection interface; The image preprocessing module includes an image import unit, a block segmentation unit, and a color calibration unit. The image import unit supports the import of 2D / 3D image data. The block segmentation unit divides the target image into matching sub-image data according to the number of display units. The color calibration unit corrects the RGB values ​​of the sub-images based on preset color gamut parameters. The image preprocessing module also includes a distortion correction unit, which corrects the geometric distortion of the sub-images based on the physical size and arrangement angle of the display units through a perspective transformation algorithm, with a correction accuracy error of less than 0.1 pixels.

[0024] The real-time detection module consists of a high-definition image acquisition unit and a multi-point temperature acquisition unit. The high-definition image acquisition unit has a frame rate of no less than 60fps and is used to capture the complete display image of the splicing array. The multi-point temperature acquisition unit obtains the temperature of the core area of ​​each display unit's light panel through contact sensors. The high-definition image acquisition unit uses a CMOS camera with a resolution of no less than 4K, and the lens focal length can be adjusted within the range of 8-24mm. The distance from the splicing display array is sufficient to ensure that the captured image covers the entire display area and the pixel resolution at the splicing point is no less than 300dpi. The multi-point temperature acquisition unit uses PT1000 contact temperature sensors, with four sensors configured for each display unit, installed at the four corners of the light panel. The temperature detection accuracy is ±0.2℃, and the data sampling frequency is 10Hz.

[0025] The intelligent control module includes a brightness / darkness line processing unit, a temperature control unit, and a synchronization coordination unit. The brightness / darkness line processing unit receives image data from the real-time detection module and calculates brightness compensation values. The temperature control unit compares the detected temperature with a threshold and outputs a heat dissipation command. The synchronization coordination unit maintains data transmission latency between modules to less than 10ms. The brightness / darkness line processing unit includes a position positioning subunit and a dynamic compensation subunit. The position positioning subunit identifies the coordinates of the splicing gaps through edge pixel gradient analysis. The dynamic compensation subunit calculates the lamp brightness adjustment value based on the following formula:

[0026] in, This is the brightness adjustment value. This is the ambient light correction factor, with a value ranging from 0.8 to 1.2. This represents the average brightness of the non-slicing area. The measured brightness of the spliced ​​area is shown, with 255 representing the maximum 8-bit grayscale value. The temperature control unit includes a threshold setting subunit and a graded execution subunit. The threshold setting subunit presets three temperature thresholds: a warning threshold of 45℃, a control threshold of 55℃, and a shutdown threshold of 65℃. The graded execution subunit corresponds to control commands for starting fan speed adjustment, reducing local brightness, and cutting off unit power. The synchronization coordination unit uses a clock synchronization protocol to keep the signal output time difference of each display unit's receiving card within 1μs and supports synchronous driving of up to 36 display units. It also includes a fault diagnosis unit, which analyzes abnormal bright spots, dark areas, and sudden changes in temperature data in the image acquisition data to automatically identify splicing misalignment, lamp failure, and heat dissipation faults with an accuracy rate of no less than 95%, and generates a diagnostic report including the fault location and type.

[0027] It also includes a light field optimization module, which consists of a light-diffusing lens array and an angle adjustment unit. The light-diffusing lens array corresponds one-to-one with each display unit. The angle adjustment unit fine-tunes the lens tilt angle based on compensation data from the bright / dark line processing unit to optimize the light emission direction. The tilt angle adjustment accuracy is 0.1°. The optical parameters of the light-diffusing lens array meet the following requirements: light transmittance not less than 92%, haze less than 1%, and light uniformity control is achieved through the following relationship:

[0028] in, To display the illuminance at a point on a plane, The initial light intensity of the light source. The effective area of ​​the lens, The distance from the light source to that point. is the lens transmittance coefficient.

[0029] Example 1: Seamless splicing system for 2×2 conventional scenes I. Splicing Display Array The video wall array consists of four independent 100-inch display units arranged in a 2×2 rectangular array, with the edge spacing between adjacent display units controlled within 0.5mm. Each display unit uses backlight technology, has a 4K resolution, 98% color gamut coverage, and is equipped with an independent HDMI 2.1 receiver card and a standard Type-C temperature detection interface. The receiver card supports 120Hz refresh rate signal input, can receive and analyze sub-image data in real time, and, in conjunction with the display unit's 10-bit grayscale level, achieves smooth color transitions.

[0030] II. Image Preprocessing Module The image preprocessing module uses an FPGA chip as its core processing unit, integrating an image import unit, a block segmentation unit, a color calibration unit, and a distortion correction unit. The overall data processing latency is less than 5ms. Specifically: The image import unit receives 2D / 3D image data transmitted from external devices via a gigabit Ethernet interface. It supports common image formats such as JPEG, PNG, and TIFF, as well as frame data extraction from video formats such as MP4 and AVI. The 3D image data is compatible with left-right format, top-bottom format, and frame encapsulation format. Based on the physical resolution and array arrangement of the display unit, the block cutting unit divides the input 4K target image into four 1920×1080 sub-image data in a 2×2 ratio. During the cutting process, an anti-aliasing algorithm is used to process edge pixels to avoid jagged distortion at the edges of the sub-images. The color calibration unit pre-stores the color gamut characteristic parameters of the display units and corrects the RGB values ​​of the sub-images using 3DLUT technology to ensure consistent color performance across all display units. After calibration, the color deviation between adjacent units is minimized. ≤1.5; The distortion correction unit corrects geometric distortion of the segmented sub-images based on the physical dimensions (1920mm×1080mm) and installation angle (horizontal error ≤0.1°) of the display unit, using a perspective transformation algorithm. To address potential edge tilting issues in the 2×2 array, the correction accuracy error is controlled within 0.05 pixels, ensuring the geometric integrity of the stitched image.

[0031] III. Real-time Detection Module The real-time monitoring module includes one high-definition image acquisition unit and 16 multi-point temperature acquisition units, enabling synchronous monitoring of the displayed image and the device temperature. The high-definition image acquisition unit uses an 8K resolution CMOS camera equipped with a 12-24mm zoom lens, mounted 3m directly in front of the splicing display array, with a frame rate set to 60fps. This position ensures that the captured image completely covers all four display units, and the pixel resolution at the splicing point reaches 350dpi, meeting the accuracy requirements for bright and dark line recognition. The camera connects to the intelligent control module via a USB 3.2 interface, with a frame transmission time of ≤15ms. The multi-point temperature acquisition unit uses PT1000 contact temperature sensors, with one sensor installed at each of the four corners of the lamp board in each display unit. The sensors are connected to the temperature control unit via shielded wires. The sensor's temperature detection range is -50℃ to 150℃, with a detection accuracy of ±0.2℃. The data sampling frequency is set to 10Hz, which can capture temperature changes in the core area of ​​the lamp board in real time, avoiding the problem of local high temperatures not being detected in time.

[0032] IV. Temperature Control Module The intelligent control module uses an industrial-grade MCU as its control core, integrating a bright / dark line processing unit, a temperature control unit, a synchronization and coordination unit, and a fault diagnosis unit. It achieves multi-module collaborative control through customized embedded software. The brightness and darkness line processing unit receives real-time image data transmitted from the high-definition image acquisition unit. The position positioning subunit uses the Sobel operator to perform edge pixel gradient analysis to identify the coordinate position of the splicing seam, achieving a positioning accuracy of up to the single pixel level. The dynamic compensation subunit calculates the lamp brightness adjustment value based on the following formula:

[0033] in, This is the brightness adjustment value. This is the ambient light correction factor, with a value ranging from 0.8 to 1.2. Based on the ambient light intensity of the conference room, it is set to 1.0. This represents the average brightness of the non-slicing area, with a value ranging from 0 to 255. The measured brightness of the splicing area ranges from 0 to 255. After calculation, the brightness adjustment signal is transmitted to the display unit receiving card via RS485 bus to achieve real-time correction of the lamp brightness. The temperature control unit's threshold setting subunit presets three temperature thresholds: a warning threshold of 45℃, a control threshold of 55℃, and a shutdown threshold of 65℃. The graded execution subunit analyzes temperature data from various sensors. When the temperature in a certain area reaches 45℃, it starts the cooling fan behind the corresponding display unit and adjusts its speed to medium (1500 rpm). When the temperature reaches 55℃, it sends a command to the bright / dark line processing unit to reduce the brightness of the edge LEDs of that display unit by no more than 20%. When the temperature reaches 65℃, it cuts off the power to that display unit and sends an alarm signal. The synchronization coordination unit adopts a clock synchronization protocol and establishes a synchronization connection with the receiving cards of each display unit via Ethernet. The transmission period of the synchronization signal is 1ms, which keeps the signal output time difference of each receiving card within 0.8μs, ensuring that the screen refresh of the four display units remains synchronized and avoiding screen misalignment during dynamic video display. The fault diagnosis unit analyzes abnormal bright spots, dark areas, and sudden changes in temperature data in real time from the image acquisition data. When a fixed bright spot is detected at the same location in three consecutive frames of images, with a brightness exceeding 50% of the surrounding area, it is determined that the light point is malfunctioning. When the temperature data changes by more than 10°C within one second, it is determined to be a heat dissipation fault. The fault identification accuracy rate can reach 98%. After identification, a diagnostic report containing the fault location, type, and handling suggestions is generated within 10 seconds and transmitted to the background monitoring terminal via Ethernet.

[0034] V. Light Field Optimization Module The light field optimization module corresponds one-to-one with each display unit, including four sets of light-diffusing lens arrays and an angle adjustment unit: The homogenizing lens array is made of optical-grade PMMA material, with a lens diameter of 10mm and an array density of 100 lenses per square inch. The lenses have a light transmittance of 93% and a haze of 0.8%. Light homogenization is achieved through the following formula:

[0035] in, To display the illuminance at a point on a plane, The initial luminous intensity of the light source is 1000 cd / m². 2 , The effective area of ​​the lens is 0.0785 cm². 2 , The distance from the light source to this point is 5mm. The lens transmittance is 0.93. Through this lens array, the illuminance uniformity of the display plane can be improved to over 95%. The angle adjustment unit uses a miniature stepper motor to drive the lens array, with an adjustment accuracy of 0.1°. Based on the brightness compensation data output by the bright and dark line processing unit, when the brightness at the splicing area needs to be increased, the lens is controlled to tilt 0.2°-0.5° towards the splicing gap to optimize the light emission direction, enhance the light superposition effect in the splicing area, and further reduce the visual impact of bright and dark lines.

[0036] Example 2: 3×3 High-Brightness Outdoor Display Seamless Splicing System I. Splicing Display Array It consists of nine 150-inch high-brightness display units arranged in a 3×3 array. Each display unit uses COB packaging technology and has a brightness of up to 2500 cd / m². 2 It features anti-glare and waterproof (IP65 rating) characteristics, 4K resolution, and a splicing gap of ≤0.3mm between adjacent units. The receiver card supports 5G signal transmission, adapting to complex outdoor signal environments.

[0037] II. Image Preprocessing Module The newly enhanced light suppression unit processes the input image using an adaptive exposure algorithm, reducing the brightness of overexposed areas in bright midday light while preserving details in shadows. The distortion correction unit addresses the viewing angle differences between the center and edge units of the 3×3 array using a zoned correction algorithm, achieving a correction accuracy error of ≤0.08 pixels.

[0038] III. Real-time Detection Module The high-definition image acquisition unit has been upgraded to a 12K resolution CMOS camera, equipped with a 24-75mm telephoto lens, and installed 5m directly in front of the splicing array. The acquisition frame rate has been increased to 120fps, which can capture splicing defects in high-speed motion images. The temperature acquisition unit has added an ambient temperature sensor, which, combined with the light panel temperature data, enables comprehensive temperature control.

[0039] IV. Intelligent Control Module Ambient light correction factor for bright and dark line processing unit It can automatically adjust according to the outdoor light intensity, with a value range of 0.8-1.2, especially during midday when there is strong sunlight. Set to 1.2 to enhance brightness compensation at splicing points; the temperature control unit adds a water-cooling heat dissipation control subunit, which starts the water-cooling system when the light panel temperature reaches 50℃, and works with the fan to achieve efficient heat dissipation. The shutdown threshold is raised to 70℃ to adapt to high outdoor high temperature environments.

[0040] V. Light Field Optimization Module The light transmittance of the uniform light lens array has been increased to 95%, haze has been reduced to 0.5%, and a new anti-UV coating has been added. The adjustment range of the angle adjustment unit has been expanded to ±5° to meet the lighting requirements of different viewing angles outdoors.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-screen seamless splicing system, characterized in that, The application relates to a display system, comprising: a spliced display array composed of a plurality of independent display units arranged in a preset array, each display unit being provided with an independent receiving card and a temperature detection interface; an image preprocessing module, the image preprocessing module comprising an image import unit, a block cutting unit and a color calibration unit, the image import unit supporting 2D / 3D image data import, the block cutting unit cutting a target image into matched sub-image data according to the number of display units, and the color calibration unit correcting sub-image RGB values based on preset color gamut parameters; a real-time detection module, the real-time detection module being composed of a high-definition image acquisition unit and a multi-point temperature acquisition unit, the high-definition image acquisition unit having a frame rate of not less than 60 fps and being used for capturing a complete display picture of the spliced array, and the multi-point temperature acquisition unit acquiring the temperature of a core area of a lamp panel of each display unit through a contact sensor; an intelligent regulation and control module, the intelligent regulation and control module comprising a bright-dark line processing unit, a temperature control unit and a synchronous coordination unit, the bright-dark line processing unit receiving image data of the real-time detection module and calculating a brightness compensation value, the temperature control unit comparing the detected temperature with a threshold value and outputting a heat dissipation instruction, and the synchronous coordination unit maintaining the data transmission delay of each module to be less than 10 ms.

2. A multi-screen seamless splicing system according to claim 1, characterized in that, The bright-dark line processing unit comprises a position positioning subunit and a dynamic compensation subunit, the position positioning subunit identifies the coordinates of a splicing gap through edge pixel gradient analysis, and the dynamic compensation subunit calculates a lamp point brightness adjustment value based on the following formula: ； Wherein, is a brightness adjustment value, is an ambient light correction coefficient, the value range is 0.8-1.2, is an average brightness of a non-stitching area, is a measured brightness of a stitching area, and 255 is the maximum value of 8-bit grayscale.

3. The multi-screen seamless splicing system according to claim 1, wherein, The high-definition image acquisition unit adopts a CMOS camera with a resolution of not less than 4K, the focal length of the lens can be adjusted in the range of 8-24 mm, and the distance between the high-definition image acquisition unit and the spliced display array satisfies that the captured picture covers the complete display area and the pixel resolution at the splicing position is not less than 300 dpi.

4. The multi-screen seamless splicing system according to claim 1, wherein, The temperature control unit comprises a threshold setting subunit and a hierarchical execution subunit, the threshold setting subunit presets three temperature thresholds, i.e. a warning threshold value of 45 DEG C, a regulation and control threshold value of 55 DEG C and a shutdown threshold value of 65 DEG C, and the hierarchical execution subunit corresponds to control instructions of starting a fan speed regulation, reducing local brightness and cutting off the power supply of a unit.

5. The multi-screen seamless splicing system according to claim 1, wherein, The image preprocessing module further comprises a distortion correction unit, the unit corrects the geometric distortion of a sub-image through a perspective transformation algorithm based on the physical size and arrangement angle of the display unit, and the correction precision error is less than 0.1 pixels.

6. The multi-screen seamless splicing system according to claim 1, wherein, The synchronous coordination unit adopts a clock synchronization protocol, so that the signal output time difference of the receiving cards of the display units is controlled to be within 1 mu s, and the synchronous driving of a maximum of 36 display units is supported.

7. The multi-screen seamless splicing system according to claim 1, wherein, The application further comprises a light field optimization module, the module being composed of a uniform light lens array and an angle adjusting unit, the uniform light lens array corresponding to each display unit one by one, the angle adjusting unit finely adjusts the tilt angle of the lens according to the compensation data of the bright-dark line processing unit to optimize the light exit direction, and the adjustment precision of the tilt angle is 0.1 DEG.

8. A multi-screen seamless splicing system according to claim 7, characterized in that, The optical parameters of the uniform light lens array satisfy that the light transmittance is not less than 92%, the haze is less than 1%, and the light homogenization regulation and control is realized through the following relationship: ； wherein, is the initial light intensity of the light source, is the initial light intensity of the light source, is the effective area of the lens, is the distance from the light source to the point, is the light transmission coefficient of the lens.

9. The multi-screen seamless splicing system according to claim 1, wherein, The multi-point temperature acquisition unit adopts a PT1000 contact temperature sensor, each display unit is configured with 4 sensors, which are respectively installed at four corner positions of the lamp panel, the temperature detection accuracy is ±0.2 DEG C, and the data sampling frequency is 10Hz.

10. The multi-screen seamless splicing system according to claim 1, wherein, The intelligent regulation and control module further comprises a fault diagnosis unit, which realizes automatic identification of splicing misplacement, lamp point failure and heat dissipation failure by analyzing abnormal bright spots, dark areas and mutation conditions of temperature data in the image acquisition data, the identification accuracy is not less than 95%, and a diagnosis report containing fault positions and types is generated.

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