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CN-121999716-A - Centralized control method for LED display

CN121999716ACN 121999716 ACN121999716 ACN 121999716ACN-121999716-A

Abstract

The invention provides a centralized control method for LED display, which relates to the field of network optimization control of LED display screens, and is characterized in that a network state matrix comprising load weight values and connectivity coefficients is generated by collecting real-time load parameters and network connectivity parameters of nodes of each LED display screen, a dynamic load balancing control path map is constructed based on the matrix, an optimal path from a control center to each node of the display screen is calculated, real-time sensing and dynamic adjustment of the state of a multi-node network can be realized, the load balancing capacity of the system is remarkably improved, meanwhile, a standby path set is generated through a predictive reconstruction mechanism and is synchronized to a relevant display screen, the adaptability of the system to network topology change can be enhanced, the stability and the high efficiency of data transmission are ensured, and in addition, the path switching under abnormal conditions can be timely completed based on an intelligent scheduling mode of the standby path set, the continuity and the reliability of a display task are ensured, so that the running efficiency and the service quality of the whole system are improved.

Inventors

  • WANG CHENXI
  • FENG YINGYING

Assignees

  • 北京晨信科技有限公司

Dates

Publication Date
20260508
Application Date
20260327

Claims (10)

  1. 1. The centralized control method for LED display is characterized by comprising the following steps: Collecting real-time load parameters and network connectivity parameters of nodes of each LED display screen, and simultaneously detecting network connection states among the nodes to generate a network state matrix containing load weight values and connectivity coefficients; constructing a control path map of dynamic load balancing based on the network state matrix, calculating an optimal path from a control center to each LED display screen, and generating a path allocation table of load balancing; establishing a predictive reconstruction mechanism based on the network state matrix change trend, generating a standby path set adapting to topology change and synchronizing the standby path set to a related LED display screen; And executing intelligent control scheduling based on the standby path set, and sending display instructions to each LED display screen by the control center according to the path information in the path allocation table, wherein each LED display screen carries out path evaluation and autonomous switching according to the received standby path set.
  2. 2. The LED display centralized control method according to claim 1, wherein the calculation of the optimal path from the control center to each LED display screen is performed by an ant colony algorithm; The ant colony algorithm releases a virtual ant population carrying a target address in a control center, so that ants explore paths in the control path map according to a probability selection formula fused with pheromone concentration, distance heuristic information and node load adaptability factors; And after the ants reach the target LED display screen, calculating the comprehensive cost value of the paths, and updating differentiated pheromones according to the path quality, and gradually converging the pheromone distribution to the optimal path combination of load balancing through multiple rounds of iterative optimization.
  3. 3. The LED display centralized control method of claim 2, wherein the probability selection formula is as follows: Wherein, the The probability value of node j is selected from node i for time t virtual ant m, For time t edge The concentration of the pheromone in the water, For the physical distance of node i to node j, For the physical distance of node i to node v, For the current load weight value of node j, As the current load weight value of node v, For ant m to be a set of neighbor nodes at node i, As the cardinality of the set of neighbor nodes, Is a hyperbolic tangent function used to model the nonlinear interaction of pheromone intensity with local network density and load, The local connectivity density is represented by the sum of the reciprocal distances of all neighbor nodes for the current node.
  4. 4. The LED display centralized control method of claim 3, wherein the comprehensive cost of the path is calculated by accumulating the basic transmission cost and the dynamic load cost of all the edges on the path to obtain the total transmission cost, combining the standard deviation of the path node load weight value as the load balancing penalty factor and the stability penalty weight calculated by the historical reliability of each edge, and calculating the comprehensive cost of the path by adopting a weighted summation mode; And taking the path with the lowest comprehensive cost value of the paths as a main control path and taking the path with the secondary comprehensive cost value as an alternative path.
  5. 5. The LED display centralized control method of claim 4, wherein said predictive reconstruction mechanism calculates a network stability index and monitors its gradient rate of change by performing a polynomial fit analysis and a load fluctuation frequency domain analysis on connectivity coefficients in said network state matrix; And when the gradient change rate exceeds a normal fluctuation range, generating a new path scheme by adopting the ant colony algorithm.
  6. 6. The LED display centralized control method of claim 5, wherein the polynomial fitting analysis mathematically models historical timing data of connectivity coefficients by least squares to obtain a polynomial function that predicts future network topology change trends; The load fluctuation frequency domain analysis converts the time domain change of the load weight value into a frequency domain power spectrum through fast Fourier transform, and identifies dominant frequency components and energy distribution characteristics of the load change.
  7. 7. The LED display centralized control method of claim 6, wherein the network stability index is represented by the formula; Wherein, the As an index of the stability of the global network, For the total number of network nodes, As the network weight of the i-th node, The connection stability score for the ith node, The load stability score for the i-th node, For the number of pairs of adjacent nodes, For the composite stability score of the ith node, The variance of the stability score is integrated for all nodes, The stability score is integrated into an average value for all nodes, A numerical stability factor.
  8. 8. A LED display centralized control system, based on the LED display centralized control method of any one of claims 1 to 7, characterized by comprising: the network state monitoring module is used for collecting load parameters and network connectivity parameters of the LED display screen nodes in real time and constructing a dynamically updated network state matrix; The path optimization calculation module is used for executing multi-objective path optimization based on the improved ant colony algorithm and generating an optimal path allocation table considering transmission efficiency and load balancing; The predictive reconstruction module is used for predicting the network topology evolution trend through polynomial fitting analysis and frequency domain analysis, calculating a network stability index and triggering active path reconstruction; The intelligent scheduling control module is used for executing distributed control scheduling based on the standby path set and realizing autonomous path evaluation and seamless switching of the LED display screen; The data storage management module is used for storing network historical state data, path information and performance parameters and supporting time sequence analysis and predictive modeling; and the performance evaluation monitoring module is used for continuously monitoring transmission performance and stability indexes of each path and providing real-time data support for path switching decision.
  9. 9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the LED display centralized control method of any one of claims 1 to 7.
  10. 10. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the LED display centralized control method of any one of claims 1 to 7.

Description

Centralized control method for LED display Technical Field The invention relates to the field of network optimization control of LED display screens, in particular to a centralized control method for LED display. Background In recent years, with the rapid development of the LED display technology, the LED display screen is widely used in the fields of advertisement display, public information broadcasting, large-scale events, conference live broadcasting and the like. Because the LED display screen has the remarkable advantages of high brightness, bright color, low power consumption, long service life and the like, the application scene of the LED display screen is gradually expanded from a single screen to a large-scale multi-node networking display system under the promotion of market demands. This trend of networking and multi-screen collaboration has put higher demands on the centralized control technology of LED display screens. However, in the conventional LED display control system, the control instruction is mostly transmitted by adopting a fixed path, and the efficiency of data distribution is often limited by a network topology structure, a node load balancing capability and the like, so that reliability problems are easy to generate when the load is high or the network state fluctuates. In the existing application, the common centralized control system has weak dynamic adjustment capability in a complex network environment, and is difficult to effectively coordinate the display states of multiple nodes in real time and optimize path selection. The prior art can realize centralized control on a multi-LED display screen, but has a plurality of limitations in terms of system expansibility, stability and dynamic response capability. For example, when some display screen nodes are overloaded or have a link failure, it is often difficult for the control system to quickly adjust the display path, which easily results in some node display delays, screen jams, and even signal interruption. Meanwhile, because the load states and network connectivity of different display screens in the multi-node system are different, the traditional control method is difficult to consider the balanced utilization of the whole network resources and the real-time regulation and control capability on the emergency. In addition, in the face of continuous expansion of multi-node scale, the traditional technology lacks an intelligent sensing and predicting mechanism for network state change, so that the application in a complex network is often accompanied with obvious resource waste and performance bottleneck, and the application prospect of a large-scale LED display system is further limited. Disclosure of Invention In order to solve the technical problems, the invention provides a centralized control method for LED display, which can solve the problems of partial node overload failure caused by uneven control load of an LED display screen in a large-scale cluster environment, control path breakage caused by dynamic change of network topology and display content transmission interruption to a certain extent. According to an aspect of the present invention, there is provided an LED display centralized control method, including: Collecting real-time load parameters and network connectivity parameters of nodes of each LED display screen, and simultaneously detecting network connection states among the nodes to generate a network state matrix containing load weight values and connectivity coefficients; constructing a control path map of dynamic load balancing based on the network state matrix, calculating an optimal path from a control center to each LED display screen, and generating a path allocation table of load balancing; establishing a predictive reconstruction mechanism based on the network state matrix change trend, generating a standby path set adapting to topology change and synchronizing the standby path set to a related LED display screen; And executing intelligent control scheduling based on the standby path set, and sending display instructions to each LED display screen by the control center according to the path information in the path allocation table, wherein each LED display screen carries out path evaluation and autonomous switching according to the received standby path set. Further, the optimal path from the control center to each LED display screen is calculated through an ant colony algorithm; The ant colony algorithm releases a virtual ant population carrying a target address in a control center, so that ants explore paths in the control path map according to a probability selection formula fused with pheromone concentration, distance heuristic information and node load adaptability factors; And after the ants reach the target LED display screen, calculating the comprehensive cost value of the paths, and updating differentiated pheromones according to the path quality, and gradually converging the pheromon