LED large screen automatic repair and fault-tolerant display system and method

Abstract

The invention discloses an LED large screen automatic repair and fault-tolerant display system and method, and relates to the technical field of LED display. The method comprises the steps that a sensor network and a high-definition camera collect data in real time; when an abnormal area is found, an intelligent diagnosis algorithm carries out comprehensive judgment according to sensor data and an image processing result, and the position and the type of a fault lamp bead are determined; starting an automatic repair process; redundant pixels are started to carry out hardware restoration; the dynamic reconstruction algorithm automatically adjusts the arrangement and brightness of redundant pixels, so that the redundant pixels replace fault lamp beads to participate in display; the system automatically adjusts the resolution and the display mode of the large screen according to the number and the distribution of the fault lamp beads. The problem that the display effect of an existing LED large screen is reduced when part of LED lamp beads are damaged is solved, it is ensured that the large screen can still maintain the good display effect under the fault condition through an innovative automatic repair and fault-tolerant mechanism, and the reliability of the system and the user experience are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of LED display, and relates to an automatic repair and fault-tolerant display system and method for a large LED screen. Background Art

[0002] With the rapid development of LED display technology, LED large screens are widely used in outdoor advertising, stage performances, sports events, conferences and exhibitions due to their advantages of high brightness, high definition, and low power consumption. However, since LED large screens are usually composed of a large number of LED lamp beads, their working environment is complex and changeable, and they are easily affected by external factors such as temperature, humidity, dust, and vibration, which may cause some LED lamp beads to malfunction, such as short circuit, open circuit, brightness attenuation, etc. If these faults are not handled in time, they will seriously affect the display effect and overall performance of the large screen.

[0003] In the prior art, the methods for handling LED screen failures mainly include manual inspection and replacement of faulty lamp beads. However, this method has disadvantages such as low efficiency, high cost, and poor usability. Especially in large outdoor LED screens, manual inspection and maintenance are extremely difficult due to the huge screen body and complex structure. Therefore, the development of an LED screen technology that can automatically repair and fault-tolerant display has important practical significance and application value. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art, the present invention provides a system and method for automatic repair and fault-tolerant display of a large LED screen. The method adopts advanced detection, analysis, repair and display technologies to realize automatic repair and fault-tolerant display of the large LED screen when some lamp beads fail, thereby ensuring that the display effect and overall performance of the large screen are not affected.

[0005] The present invention is implemented through the following technical solutions: The present invention provides an automatic repair and fault-tolerant display system for a large LED screen, including a fault detection module, an automatic repair module and a fault-tolerant display module; The fault detection module includes: Sensor network: a high-density sensor network is arranged on the back or side of the LED screen, including temperature sensors, humidity sensors, and light sensors, to monitor the working environment of the screen and the working status of each LED lamp bead in real time; Image processing module: Combined with the large-screen display image captured by the camera, image processing technology is used to analyze the abnormal area in the image and locate possible faulty lamp beads; Intelligent diagnostic algorithm: Combine sensor data and image processing results, use machine learning or deep learning algorithms to quickly and accurately diagnose faulty lamp beads and distinguish whether it is a hardware fault or a software fault; The automatic repair module includes, Redundant pixel design: When designing a large LED screen, a certain number of redundant pixels are reserved, that is, a spare LED lamp bead is reserved next to each pixel, that is, twice as many LED lamp beads as the usual solution. These redundant pixels do not participate in the display under normal circumstances, but are automatically enabled when a fault occurs; Dynamic reconstruction method: According to the position and number of faulty lamp beads, the arrangement and brightness of redundant pixels are dynamically adjusted so that they can replace the faulty lamp beads to participate in the display, thus realizing automatic repair of the faulty area. Software compensation technology: For minor faults that cannot be repaired by hardware, software compensation technology is used to reduce the impact of faulty lamp beads on the overall display effect by adjusting the brightness or color of surrounding normal lamp beads; The fault-tolerant display module includes: Multi-resolution support: Automatically adjust the resolution and display mode of the large screen according to the number and distribution of faulty LEDs to ensure that a clear and coherent picture can still be displayed in the event of a fault; Content optimization technology: Use image processing technology to intelligently optimize display content to adapt to the adjusted resolution and display mode; User interaction interface: Provides a friendly user interaction interface that displays fault information and repair progress in real time, allowing users to choose whether to enable fault-tolerant display mode and adjust display parameters as needed.

[0006] A method for automatic repair and fault-tolerant display of a large LED screen, comprising the following steps: System deployment: First, install a sensor network and high-definition cameras on the back or side of the LED screen to ensure that the working environment and display area of ​​the screen are fully covered; at the same time, reserve redundant pixels in the circuit design of the screen, and configure the corresponding control circuit and drive circuit; Initialization settings: When the system starts, the sensor network, high-definition camera, and redundant pixel hardware devices are initialized to ensure that each device can work normally; at the same time, the intelligent diagnosis algorithm and dynamic reconstruction algorithm software modules are loaded to prepare for fault detection and automatic repair; Fault detection: After the system enters the running state, the sensor network and high-definition camera begin to collect data in real time; the sensor network monitors the working environment of the large screen and the working status of each LED lamp; the high-definition camera captures the display image of the large screen and transmits it to the image processing module for analysis; when an abnormal area is found, the intelligent diagnosis algorithm makes a comprehensive judgment based on the sensor data and image processing results to determine the location and type of the faulty lamp bead; Automatic repair: Once the location and type of the faulty lamp bead are determined, the system immediately starts the automatic repair process; first, it tries to reduce the impact of the faulty lamp bead on the overall display effect through software compensation technology; if software compensation cannot solve the problem, it enables redundant pixels for hardware repair; the dynamic reconstruction algorithm automatically adjusts the arrangement and brightness of redundant pixels according to the location and number of the faulty lamp bead, so that it can replace the faulty lamp bead to participate in the display; Fault-tolerant display: During the automatic repair process, the system automatically adjusts the resolution and display mode of the large screen according to the number and distribution of faulty lamp beads; at the same time, the display content is intelligently optimized using content optimization technology to ensure that a clear and coherent picture can still be displayed in the event of a fault; users can view fault information and repair progress in real time through the user interaction interface, and adjust display parameters as needed; Remote monitoring and maintenance: Remote monitoring and fault diagnosis of LED large screens are achieved through cloud computing and Internet of Things technologies. When the system detects a fault, it will automatically send an alarm message to the remote monitoring center and provide a detailed fault report and repair suggestions. The remote monitoring center will perform remote fault diagnosis and repair operations based on the fault report, or dispatch maintenance personnel to the site for processing.

[0007] The beneficial effects of the present invention are: The present invention solves the problem of reduced display effect caused by damage to some LED lamp beads of the existing LED large screen. Through innovative automatic repair and fault-tolerant mechanisms, it ensures that the large screen can still maintain a good display effect in the event of a fault, thereby improving the reliability of the system and user experience.

[0008] The LED large screen automatic repair and fault-tolerant display method of the present invention has the following beneficial effects: 1) Improve system reliability: By automatically detecting and repairing faulty lamp beads, the display effect degradation and downtime caused by faults can be reduced, and the reliability and stability of the LED large screen can be improved.

[0009] 2) Reduce maintenance costs: Reduce the frequency and difficulty of manual inspection and replacement of faulty lamp beads, and reduce maintenance costs and time costs.

[0010] 3) Improve user experience: Even in the event of a fault, it can still display clear and coherent images, improving user experience and satisfaction.

[0011] 4) Strong adaptability: Supports multiple resolutions and display mode adjustments to adapt to LED large-screen applications in different scenarios and needs.

[0012] 5) Easy to expand and maintain: Modular design and remote monitoring technology are adopted to facilitate system integration, upgrading and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings; Figure 1 This is the architecture diagram of the LED large screen automatic repair and fault-tolerant display system of the present invention; Figure 2 This is a flow chart of the dynamic reconstruction method of the LED large screen of the present invention. DETAILED DESCRIPTION

[0014] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0015] The accompanying drawings are specific embodiments of an automatic repair and fault-tolerant display system and method for a large LED screen according to the present invention.

[0016] As attached Figure 1 As shown, a large LED screen automatic repair and fault-tolerant display system includes a fault detection module, an automatic repair module and a fault-tolerant display module.

[0017] The fault detection module includes: Sensor network: A high-density sensor network is arranged on the back or side of the LED screen, including temperature sensors, humidity sensors, and light sensors, to monitor the working environment of the screen and the working status of each LED lamp bead in real time.

[0018] Image processing module: Combined with the large-screen display image captured by the camera, image processing techniques such as edge detection and color analysis are used to analyze abnormal areas in the image and locate possible faulty lamp beads.

[0019] Intelligent diagnostic algorithm: Combine sensor data and image processing results, use machine learning or deep learning algorithms to quickly and accurately diagnose faulty lamp beads and distinguish whether it is a hardware failure or a software failure.

[0020] The automatic repair module includes, Redundant pixel design: When designing a large LED screen, a certain number of redundant pixels are reserved, that is, a spare LED lamp bead is reserved next to each pixel, that is, twice as many LED lamp beads as the usual solution. These redundant pixels do not participate in the display under normal circumstances, but are automatically enabled when a fault occurs.

[0021] Dynamic reconstruction method: According to the position and number of faulty lamp beads, the arrangement and brightness of redundant pixels are dynamically adjusted so that they can replace the faulty lamp beads to participate in the display, thereby realizing automatic repair of the faulty area.

[0022] Software compensation technology: For minor faults that cannot be repaired by hardware, such as brightness attenuation, software compensation technology is used to reduce the impact of faulty lamp beads on the overall display effect by adjusting the brightness or color of surrounding normal lamp beads.

[0023] The fault-tolerant display module includes: Multi-resolution support: Automatically adjust the resolution and display mode of the large screen according to the number and distribution of faulty lamp beads to ensure that a clear and coherent picture can still be displayed in the event of a fault.

[0024] Automatically adjust the resolution of the large screen by lowering the resolution. When a lamp bead in a row is broken and the spare lamp bead cannot work normally, all the LED lamp beads in the row and column where the lamp bead is located will be turned off and will not participate in the display. At the same time, the odd-numbered rows of the row and column will also be turned off and will not participate in the display. That is, the resolution of the entire screen is reduced by half. When the viewing distance is greater than the minimum viewing distance, it is imperceptible to the human eye. That is, the bad pixels on the screen are filtered out by lowering the resolution without affecting the viewing experience.

[0025] Content optimization technology: Use image processing technology to intelligently optimize display content, such as automatic scaling, cropping, and rearrangement to adapt to the adjusted resolution and display mode.

[0026] User interaction interface: Provides a friendly user interaction interface that displays fault information and repair progress in real time, allowing users to choose whether to enable fault-tolerant display mode and adjust display parameters as needed.

[0027] System integration and testing include: Modular design: The functions such as fault detection, automatic repair and fault-tolerant display are modularly designed to facilitate system integration, upgrade and maintenance.

[0028] Comprehensive testing platform: Build a comprehensive testing platform to simulate various fault scenarios and working environments, and comprehensively test and optimize the system's performance.

[0029] Remote monitoring and maintenance: Through cloud computing and Internet of Things technologies, remote monitoring, fault diagnosis and automatic repair of LED large screens can be realized, reducing maintenance costs and improving response speed.

[0030] A method for automatic repair and fault-tolerant display of a large LED screen, comprising the following steps: System deployment: First, install a sensor network and high-definition cameras on the back or side of the LED large screen to ensure that the working environment and display area of ​​the large screen can be fully covered; at the same time, reserve redundant pixels in the circuit design of the large screen, and configure the corresponding control circuit and drive circuit.

[0031] Initialization settings: When the system starts, the sensor network, high-definition camera, and redundant pixel hardware devices are initialized to ensure that each device can work normally; at the same time, the intelligent diagnosis algorithm and dynamic reconstruction algorithm software modules are loaded to prepare for fault detection and automatic repair.

[0032] Fault detection: After the system enters the running state, the sensor network and high-definition camera begin to collect data in real time; the sensor network monitors the working environment of the large screen and the working status of each LED lamp bead; the high-definition camera captures the display image of the large screen and transmits it to the image processing module for analysis; when an abnormal area is found, the intelligent diagnosis algorithm makes a comprehensive judgment based on the sensor data and image processing results to determine the location and type of the faulty lamp bead.

[0033] Image processing and analysis modules include: Preprocessing: The received images first go through preprocessing steps including denoising, contrast enhancement, color correction, etc. to improve the accuracy of subsequent analysis.

[0034] Anomaly detection: Use general image processing algorithms (including edge detection, image segmentation, machine learning models, etc.) to analyze images and identify areas that display anomalies (such as bright spots, dark spots, uneven colors, etc.).

[0035] Feature extraction: Extract key features from abnormal areas, such as shape, size, location, and contrast with surrounding pixels, to provide a basis for intelligent diagnosis.

[0036] Fault diagnosis: Based on machine learning or deep learning models (such as convolutional neural networks (CNN), random forests, etc.), the fused data is comprehensively analyzed to intelligently identify the specific location (row and column coordinates) of the faulty lamp beads, the type (such as open circuit, aging, etc.) and possible causes of the fault.

[0037] Decision support: The system generates detailed fault diagnosis reports, including the precise location of the faulty lamp, recommended repair measures and possible preventive measures, providing guidance for operation and maintenance personnel on rapid response and accurate repair.

[0038] Automatic repair: Once the location and type of the faulty lamp bead are determined, the system immediately starts the automatic repair process; first, try to reduce the impact of the faulty lamp bead on the overall display effect through software compensation technology; if software compensation cannot solve the problem, enable redundant pixels for hardware repair; the dynamic reconstruction algorithm automatically adjusts the arrangement and brightness of redundant pixels according to the location and number of the faulty lamp beads, so that they can replace the faulty lamp beads to participate in the display. The dynamic reconstruction algorithm actually replaces the broken pixels with redundant pixels, but it cannot replace only one at a time because the position is biased. It is possible to replace the broken lamp bead in the middle with two upper and lower lamp beads. In this way, the superposition of the two upper and lower redundant lamp beads is equivalent to replacing the broken lamp bead in the middle. Similarly, the two left and right lamp beads can also be used to replace the broken lamp bead in the middle.

[0039] Fault-tolerant display: During the automatic repair process, the system automatically adjusts the resolution and display mode of the large screen according to the number and distribution of faulty lamp beads; at the same time, it uses content optimization technology to intelligently optimize the display content to ensure that clear and coherent images can still be displayed in the event of a fault; users can view fault information and repair progress in real time through the user interaction interface, and adjust display parameters as needed.

[0040] Remote monitoring and maintenance: Remote monitoring and fault diagnosis of LED large screens are achieved through cloud computing and Internet of Things technologies. When the system detects a fault, it will automatically send an alarm message to the remote monitoring center and provide a detailed fault report and repair suggestions. The remote monitoring center will perform remote fault diagnosis and repair operations based on the fault report, or dispatch maintenance personnel to the site for processing.

[0041] As attached Figure 2 The flow chart of the dynamic reconstruction method shown includes that the system reads the sensor data and analyzes the abnormality of the image to determine whether the lamp beads are faulty. If there is no fault, it continues the next round of reading and analysis; if a fault is found, the position and type of the faulty lamp beads are located; at this time, the redundant pixels are activated, and the brightness or color of the redundant pixels are adjusted according to the position and number of the faulty lamp beads, and the content is redisplayed according to the LED lamp bead layout after the pixels are replaced.

Claims

1. An automatic repair and fault-tolerant display system for LED large screens, characterized in that: It includes a fault detection module, an automatic repair module and a fault-tolerant display module; The fault detection module includes: Sensor network: A high-density sensor network is arranged on the back or side of the LED screen, including temperature sensors, humidity sensors, and light sensors, to monitor the working environment of the screen and the working status of each LED lamp bead in real time; Image processing module: Combined with the large-screen display image captured by the camera, image processing technology is used to analyze the abnormal area in the image and locate possible faulty lamp beads; Intelligent diagnostic algorithm: Combine sensor data and image processing results, use machine learning or deep learning algorithms to quickly and accurately diagnose faulty lamp beads and distinguish whether it is a hardware fault or a software fault; The automatic repair module includes, Redundant pixel design: When designing a large LED screen, a certain number of redundant pixels are reserved, that is, a spare LED lamp bead is reserved next to each pixel, that is, twice as many LED lamp beads as the usual solution. These redundant pixels do not participate in the display under normal circumstances, but are automatically enabled when a fault occurs; Dynamic reconstruction method: According to the position and number of faulty lamp beads, the arrangement and brightness of redundant pixels are dynamically adjusted so that they can replace the faulty lamp beads to participate in the display, thus realizing automatic repair of the faulty area. Software compensation technology: For minor faults that cannot be repaired by hardware, software compensation technology is used to reduce the impact of faulty lamp beads on the overall display effect by adjusting the brightness or color of surrounding normal lamp beads; The fault-tolerant display module includes: Multi-resolution support: Automatically adjust the resolution and display mode of the large screen according to the number and distribution of faulty LEDs to ensure that a clear and coherent picture can still be displayed in the event of a fault; Content optimization technology: Use image processing technology to intelligently optimize display content to adapt to the adjusted resolution and display mode; User interaction interface: Provides a friendly user interaction interface that displays fault information and repair progress in real time, allowing users to choose whether to enable fault-tolerant display mode and adjust display parameters as needed.

2. The LED large screen automatic repair and fault-tolerant display system according to claim 1 is characterized in that: Automatically adjust the resolution of the large screen by lowering the resolution. When a lamp bead in a row is broken and the spare lamp bead cannot work normally, all the LED lamp beads in the row and column where the lamp bead is located will be turned off and will not participate in the display. At the same time, the odd-numbered rows of the row and column will also be turned off and will not participate in the display. That is, the resolution of the entire screen is reduced by half. When the viewing distance is greater than the minimum viewing distance, it is imperceptible to the human eye. That is, the bad pixels on the screen are filtered out by lowering the resolution without affecting the viewing experience.

3. A method for automatic repair and fault-tolerant display of a large LED screen, characterized in that: The following steps are included: System deployment: First, install a sensor network and high-definition cameras on the back or side of the LED screen to ensure that the working environment and display area of ​​the screen are fully covered; at the same time, reserve redundant pixels in the circuit design of the screen, and configure the corresponding control circuit and drive circuit; Initialization settings: When the system starts, the sensor network, high-definition camera, and redundant pixel hardware devices are initialized to ensure that each device can work normally; at the same time, the intelligent diagnosis algorithm and dynamic reconstruction algorithm software modules are loaded to prepare for fault detection and automatic repair; Fault detection: After the system enters the operating state, the sensor network and high-definition cameras begin to collect data in real time; The sensor network monitors the working environment of the large screen and the working status of each LED lamp bead; The high-definition camera captures the display image of the large screen and transmits it to the image processing module for analysis; When an abnormal area is found, the intelligent diagnosis algorithm makes a comprehensive judgment based on the sensor data and image processing results to determine the location and type of the faulty lamp bead; Automatic repair: Once the location and type of the faulty lamp bead are determined, the system immediately starts the automatic repair process; First, try to reduce the impact of faulty lamp beads on the overall display effect through software compensation technology; if software compensation cannot solve the problem, enable redundant pixels for hardware repair; dynamic reconstruction algorithm automatically adjusts the arrangement and brightness of redundant pixels according to the position and number of faulty lamp beads, so that they can replace the faulty lamp beads to participate in the display; Fault-tolerant display: During the automatic repair process, the system automatically adjusts the resolution and display mode of the large screen according to the number and distribution of faulty lamp beads; at the same time, it uses content optimization technology to intelligently optimize the display content to ensure that a clear and coherent picture can still be displayed in the event of a fault; Users can view fault information and repair progress in real time through the user interaction interface and adjust display parameters as needed; Remote monitoring and maintenance: Remote monitoring and fault diagnosis of LED large screens are achieved through cloud computing and Internet of Things technologies. When the system detects a fault, it will automatically send an alarm message to the remote monitoring center and provide a detailed fault report and repair suggestions. The remote monitoring center will perform remote fault diagnosis and repair operations based on the fault report, or dispatch maintenance personnel to the site for processing.

4. The LED large screen automatic repair and fault-tolerant display method according to claim 3 is characterized in that: Intelligent diagnostic algorithm image processing and analysis includes the following steps: Preprocessing: The received images first go through preprocessing steps, including denoising, contrast enhancement, and color correction, to improve the accuracy of subsequent analysis; Anomaly detection: Uses common image processing algorithms to analyze images and identify areas that show anomalies; Feature extraction: Extract key features from abnormal areas, including shape, size, location, and contrast with surrounding pixels, to provide a basis for intelligent diagnosis; Fault diagnosis: Based on machine learning or deep learning models, the fused data is comprehensively analyzed to intelligently identify the specific location, row and column coordinates, and type of faulty lamp beads, including open circuit, aging, and possible fault causes; Decision support: The system generates detailed fault diagnosis reports, including the precise location of the faulty lamp, recommended repair measures and possible preventive measures, providing guidance for operation and maintenance personnel on rapid response and accurate repair.

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