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KR-102963234-B1 - PST AND PMS BASED POWER REDUNDANCY SMART LED DISPLAY SYSTEM

KR102963234B1KR 102963234 B1KR102963234 B1KR 102963234B1KR-102963234-B1

Abstract

The present invention relates to an LED display system that implements power redundancy through current sharing and status monitoring among a plurality of power supply units, and ensures high reliability and continuous screen output through automatic switching and signal output maintenance in the event of a fault. More specifically, the invention relates to a smart LED display system comprising: at least one LED display module constituting the LED display; a plurality of power supply units for supplying power to each of the LED display modules; and a current sharing control unit connected to each of the plurality of power supply units to control the sharing of current in both directions. The present invention relates to a power redundancy smart LED display system based on PST (Power Sharing Technology) and PMS (Power Monitoring System), comprising a power monitoring unit that monitors the status of a plurality of power supply units in real time, such as output current, temperature, and load conditions, detects whether a fault has occurred, and controls the automatic switching to another power supply unit when a fault occurs in the power supply unit, wherein the current sharing control unit automatically distributes the load current when the power load is excessively concentrated in a specific power supply unit, and the power monitoring unit transmits fault information to an operator via email or message when a fault occurs, and further comprises a signal output maintaining unit that controls the screen output of the LED display module so that it does not turn off or flicker during the power switching process.

Inventors

  • 최광수
  • 최동수
  • 김상기
  • 최기석
  • 박희철

Assignees

  • 탐투스 주식회사

Dates

Publication Date
20260511
Application Date
20250513

Claims (8)

  1. In a smart LED display system, At least one LED display module constituting the above LED display panel; A plurality of power supply units for supplying power to each of the above LED display modules; A current sharing control unit connected to each of the above plurality of power supply units and controlling the sharing of current in both directions; A power monitoring unit that monitors the status of the plurality of power supply units in real time, such as output current, temperature, and load conditions, detects whether a fault has occurred, and controls the automatic switching to another power supply unit when a fault occurs in the corresponding power supply unit; A self-diagnostic unit that distinguishes between temporary errors and permanent failures of the above-mentioned power supply unit to prevent unnecessary switching; and It includes a thermal management circuit that differentially allocates load current based on temperature, load history, and cumulative usage time information of the power supply unit, and optimizes cooling efficiency by analyzing the heat distribution state in real time. The above current sharing control unit automatically distributes the load current when the power load is excessively concentrated on a specific power supply, and The above-mentioned power monitoring unit transmits fault information to the operator via email or message in the event of a fault, and It further includes a signal output maintaining unit that controls the screen output of the LED display module so that it does not turn off or flicker during the power switching process, The above current sharing control unit induces current to flow in the reverse direction from one power supply to another when necessary, thereby preventing the current flow from being biased in a single direction, and regulates the current by returning a portion of the current supplied by one power supply to the other power supply, so that the two power supplies supply power in a balanced manner. When the above-mentioned self-diagnosis unit detects temporary abnormal signs, such as overcurrent or voltage spikes, in the power supply unit, it checks the duration; if the abnormality disappears within a few milliseconds to several seconds, it considers it a temporary error and does not immediately shut down the power supply unit or switch to a backup power source, but rather monitors and maintains the status, observes for a certain period whether the error recurs, and then reserves judgment or saves it in a log; if the abnormal state in the power supply unit persists for a certain period or longer, or if there is no response to the self-diagnosis signal and self-recovery does not occur, it determines that the power supply unit is permanently failed, registers the power supply unit as a faulty state in the power monitoring unit, immediately switches to a backup power source, or outputs a warning notification. The above thermal management circuit measures the real-time temperature through temperature sensors placed in key parts of the power supply and display module, determines whether the temperature rise exceeds an allowable range by comparing it with a preset threshold, and when the threshold temperature is exceeded, operates the cooling fan, adjusts the output of the power supply, or reduces the load of a specific power supply through a temporary power distribution command, transmits a warning signal to the power monitoring unit if overheating persists, and, if necessary, switches the power supply to a backup or cuts it off in conjunction with the self-diagnosis unit, thereby characterizing the power redundancy smart LED display system based on PST (Power Sharing Technology) and PMS (Power Monitoring System).
  2. In Article 1, The above current sharing control unit is, A power redundancy smart LED display system based on PST and PMS, characterized by measuring the load current applied to each power supply unit in real time and operating to evenly distribute the load through a control signal when an imbalance in the load current is detected.
  3. In Article 1, The above power monitoring unit is, A power redundancy smart LED display system based on PST and PMS, characterized by collecting data through current sensors, temperature sensors, and fault detection modules installed in each power supply unit, and analyzing the data through a central control unit.
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  6. In Article 1, The above signal output maintaining unit is, A power redundancy smart LED display system based on PST and PMS, characterized by including a frame buffer and switching logic to prevent the video signal of the LED display module from being interrupted during switching between the power supply units.
  7. In Article 1, The above power monitoring unit is, A power redundancy smart LED display system based on PST and PMS, characterized by controlling to automatically switch to a backup power supply when the output voltage or output current of the power supply unit exceeds or falls short of a set threshold.
  8. In Article 1, The above power monitoring unit is, A power redundancy smart LED display system based on PST and PMS, characterized by further including a remote diagnostic module that transmits status information of the relevant power supply unit to a remote server in the event of a failure and allows a maintenance worker to check the cause of the failure in real time via a mobile device.

Description

PST and PMS-based Power Redundancy Smart LED Display System The present invention relates to an LED display system, and more specifically, to a power redundancy smart LED display system based on PST (Power Sharing Technology) and PMS (Power Monitoring System) that implements power redundancy through current sharing and status monitoring among multiple power supply units, and ensures high reliability and continuous screen output by automatically switching and maintaining signal output in the event of a failure. Generally, LED display systems consist of multiple LED display modules, each receiving operating power through a power supply. However, such systems face the problem that if a failure occurs in a single power supply unit, the output of the corresponding module or the entire display is interrupted. This can result in massive operational losses and safety risks, particularly in the case of large displays or outdoor displays. To address this, power redundancy structures are sometimes introduced; however, existing systems have limitations in ensuring real-time performance and stability, such as simply manually switching to a backup power source or experiencing display flickering or output interruption due to switching time delays in the event of a failure. Furthermore, despite the existence of multiple power supplies, if the load current is concentrated in some of the power supplies, overheating or premature failure may occur, and technology to actively control such imbalance issues has been insufficient. Furthermore, despite the increasing demand for smart LED display systems that integrate real-time monitoring of power supply failures, automatic switching, load balancing control, fault notifications, and remote diagnostic functions, the technology to effectively implement these capabilities is currently lacking. FIG. 1 is a configuration diagram according to one embodiment of a power redundancy smart LED display system based on PST and PMS of the present invention. FIG. 2 is a conceptual diagram showing a state in which a failure occurs in one of a plurality of LED display modules according to the present invention. FIG. 3 is a conceptual diagram showing the power recovery process of a faulty LED display module according to the present invention. FIG. 4 is a configuration diagram of the usage state according to the present invention. Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the embodiments of the present invention, if it is determined that a detailed description of related known components or functions would hinder understanding of the embodiments of the present invention, such detailed description is omitted. In addition, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the embodiments of the present invention. These terms are intended merely to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by these terms. Where it is stated that a component is "connected," "combined," or "joined" to another component, it should be understood that the component may be directly connected or joined to the other component, but that components may also be "connected," "combined," or "joined" between each component. FIG. 1 is a configuration diagram according to an embodiment of a power redundancy smart LED display board system based on PST and PMS according to the present invention, FIG. 2 is a conceptual diagram showing a state in which a failure has occurred in one of a plurality of LED display modules according to the present invention, FIG. 3 is a conceptual diagram showing a power recovery process for a failed LED display module according to the present invention, and FIG. 4 is a configuration diagram of a usage state according to the present invention. Hereinafter, with reference to FIGS. 1 to 4, a power redundancy smart LED display system based on PST and PMS according to the present invention will be described. Referring to FIG. 1, according to one embodiment of the power redundancy smart LED display system based on PST (Power Sharing Technology) and PMS (Power Monitoring System) of the present invention (hereinafter referred to as the 'LED display system' or 'system'), it may be configured to include an LED display module (10), a power supply unit (20), a current sharing control unit (30), and a power monitoring unit (40), and may further include a signal output maintenance unit (50), or further include a self-diagnosis unit (60) and a thermal management circuit unit (70), respectively. First, an LED display module (10) according to one embodiment of the present invention is a disp