KR102202914B1 - Display Apparatus for Uninterrupted Parallel Power and Driving Method Thereof - Google Patents

Abstract

The present invention relates to an uninterrupted parallel power signboard and a driving method of the signboard. According to an embodiment of the present invention, the uninterrupted parallel power signboard includes: a display unit which implements an image on a screen by separately driving a plurality of LED light emitting units configured in a matrix form for each line; a plurality of power supply units which are electrically connected to each other and supply power in parallel to the plurality of LED light emitting units forming the line; a dummy power supply connected to the plurality of power supplies and operated for non-interruption of power when at least one of the plurality of power supplies operates abnormally; and a plurality of power control monitoring units connected to the plurality of power supply units and the dummy power supply unit to monitor the power state of the supplied power.

Description

Display Apparatus for Uninterrupted Parallel Power and Driving Method Thereof}

The present invention relates to an uninterrupted parallel power electric sign and a method of driving the electric sign, and more particularly, when implementing a single image on the screen of a display device such as an electric sign that combines a plurality of LED modules configured in a matrix form. Or, it relates to an uninterrupted parallel power electronic display board for supplying power to a plurality of LED modules driven for each line of a row without interruption, and a driving method of the electronic display panel.

In general, a multi-display device using a plurality of LED modules is installed in various exhibitions, performance halls, and stadiums indoors and outdoors, and serves to provide various image information. A display device using such an LED module is connected and installed in a state in which a plurality of LED modules are regularly arranged in a horizontal and vertical direction in order to implement a large screen. In a multi-display device using such an LED module, the whole can be used as a single LED module, each LED module can be used independently, and several LED modules are tied together to be used like a single LED module. A variety of dramatic and beautiful images can be provided.

Since the multi-display device is operated by an external power source, many SMPSs (Switching Mode Power Supply) are provided in order to stably operate the multi-display device. The external AC voltage controlled by the controller adopts a power supply method called SMPS to improve the stability of the power supply.

However, in the process of separating and operating a multi-display device comprising a plurality of LED modules in a matrix form into various forms, failures of the SMPS frequently occur. Of course, conventionally, in order to solve this problem, it has been disclosed to configure an SMPS in a dual form, that is, to operate a multi-display device.

However, such power redundancy requires 2×N SMPSs for redundancy, and even if only two SMPSs in the same location fail, the operation of the electric signboard must be stopped, and when one SMPS fails, it cannot be checked with the naked eye or a program. There is a problem in that AC input power must be cut off in order to replace a failed SMPS. In addition, since the failure of the SMPS cannot be predicted, there is also the hassle of having a large amount of spare parts for the SMPS.

Korean Registered Patent Publication No. 10-1011970 (2011.01.25) Korean Registered Patent Publication No. 10-1465567 (2014.11.20) Korean Registered Patent Publication No. 10-1647610 (2016.08.04) Korean Registered Patent Publication No. 10-1892289 (2018.08.21)

The embodiment of the present invention is a plurality of LED modules that are driven for each row or column line when implementing one image on the screen of a display device such as an electric sign that combines a plurality of LED modules configured in a matrix form without interrupting power. It is an object of the present invention to provide an uninterrupted parallel power supply board and a driving method of the board.

In an uninterrupted parallel power electric signboard according to an embodiment of the present invention, a display unit for implementing an image on a screen by separately driving a plurality of LED light emitting units configured in a matrix form for each line, is electrically connected to each other, and the A plurality of power supply units supplying power in parallel to a plurality of LED light emitting units forming a line, connected to the plurality of power supply units, and a dummy operated for uninterrupted power when at least one of the plurality of power supply units is abnormally operated (dummy) a power supply unit, and a plurality of power control monitoring units connected to the plurality of power supply units and the dummy power supply unit to monitor a power state of the supplied power.

The dummy power supply may be additionally configured within a range smaller than the number of lines.

Each power control monitoring unit cuts off AC power supplied to each power supply unit or dummy power supply unit based on a sensor unit that detects the power state of the AC power supplied for each line, and the detected detection result. It may include a relay unit to let.

Each of the power control monitoring units may further include a status display unit for externally displaying a power state of the monitored power supply, and a user interface unit for receiving a user command to cut off the AC power provided based on the notification. have.

It may further include an integrated control device for receiving the detection data of the power state from the plurality of power control monitoring units and integrally controlling the plurality of power control monitoring units based on the received detection data.

The integrated control device may request user control by providing an analysis result of the received sensing data and status information on the plurality of power supply units to a user terminal device.

In addition, the driving method of an uninterrupted parallel power electronic display board according to an embodiment of the present invention comprises the steps of implementing an image on the screen of the display unit by separately driving a plurality of LED light emitting units configured in a matrix form for each line, electrically connecting to each other. Supplying power in parallel to a plurality of LED light emitting units forming the line, a dummy power supply connected to the plurality of power supply units, at least one of the plurality of power supply units is abnormal The step of operating for uninterrupted power during operation, and a step of monitoring a power state of the supplied power by the plurality of power supply units and a plurality of power control monitoring units connected to the dummy power supply unit.

The dummy power supply may be additionally configured within a range smaller than the number of lines.

The driving method includes the steps of: a sensor unit included in each power control monitoring unit, sensing a power state of an alternating current (AC) power supplied for each line, and a relay unit included in each of the power control monitoring units, the It may include the step of cutting off the AC power supplied to each power supply unit or the dummy power supply unit based on the detected detection result.

The driving method comprises the steps of: a status display unit included in each of the power control monitoring units, displaying a power state of the monitored power to the outside, and a user interface unit included in each of the power control monitoring units, the notification It may further include the step of receiving a user command for cutting off the AC power provided on the basis of.

The driving method further comprises the step of receiving, by the integrated control device, sensing data of the power state from the plurality of power control monitoring units, and integrally controlling the plurality of power control monitoring units based on the received detection data. I can.

The driving method may further include the step of requesting user control by providing, by the integrated control device, an analysis result of the received sensing data and status information on the plurality of power supply units to a user terminal device.

According to an embodiment of the present invention, failure can be repaired by selecting only a failed SMPS among a plurality of SMPSs connected by a parallel power supply method, and since the SMPS can be replaced in an operating state of the billboard, the operation of the billboard will not be interrupted.

In addition, in the embodiment of the present invention, since only a minimum of SMPS can be additionally configured, the manufacturing cost of an electric signboard or the like can be reduced.

Further, according to an embodiment of the present invention, it is possible to check whether the SMPS is stably operating in real time or periodically through status history information of the SMPS and a plurality of SMPS comparison information, and of course, it will be possible to predict a sign of a failure.

In addition, according to an embodiment of the present invention, even if an SPMS that operates as much as the number of additional SMPSs fails at the same time, it may be possible to operate without interruption of the billboard.

1 is a view showing an uninterrupted parallel power electronic display system according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a detailed configuration of the electric sign of FIG. 1;
3 is a block diagram showing a detailed structure of a power control monitoring unit (PCMU) of FIG. 2;
4 is a view for explaining the operation state of the SMPS of FIG. 2, and
5 is a flowchart illustrating a driving process of an uninterrupted parallel power electronic display board according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings.

1 is a view showing an uninterrupted parallel power electronic sign system according to an embodiment of the present invention, and FIG. 2 is a view showing a detailed configuration of the electronic sign of FIG. 1.

As shown in FIG. 1, the uninterrupted parallel power electric sign system 90 according to the embodiment of the present invention may include a part or all of the electric sign 110, the integrated control device 110, and the external device 120. .

Here, "including some or all" means that some components such as the external device 120 are omitted so that the system 90 is configured, or some or all of some components such as the integrated control device 110 It will be described as including all in order to help a sufficient understanding of the invention, as meaning that can be configured by being integrated with other components such as 110).

The billboard 110 may include a display unit (or a light emitting unit) including a plurality of LED light emitting units and a peripheral circuit unit for driving the plurality of LED light emitting units 101. Of course, in the embodiment of the present invention, the LED, which is an eco-friendly device, is illustrated, but it will not be particularly limited thereto. As can be seen in FIGS. 1 and 2, the plurality of LED light emitting units may be configured in a module unit, arranged and combined in a matrix form. The LED light emitting unit 101 is configured in the form of an LED module. Here, the term "LED module" usually refers to an LED light-emitting unit of individual units for assembly, but in addition, in a form in which one or more printed circuit boards (PCBs) are combined with a cover (lower), the LED element is It also refers to an LED light-emitting unit formed in various forms such as manufactured in the form of a chip formed on a PCB substrate during the process of a production line and combined with the substrate. Therefore, in the embodiments of the present invention, the concept of such terms will not be specifically limited. That is, the module may be understood as a light emitting unit of individual units that can be combined. However, in the embodiment of the present invention, since it is possible to divide and drive one large electric signboard by dividing a plurality of regions, it will not be particularly limited to the combination of the LED modules.

The plurality of LED light emitting units 101 in a matrix form constituting the display unit operate by receiving power for each line such as a row or column. Normally, LED devices operate by receiving DC voltage, so the voltage provided may be slightly different depending on which color of the LED device is driven, and red (R), green (G), and blue (B) LEDs are Information or data of various colors can be implemented on a screen with pixels. Of course, since the LED device can be driven by constant voltage or constant current, it will not be specifically limited to any one form in the embodiment of the present invention. LED devices are self-luminous devices that emit light without a backlight, such as LCDs, so they can directly express gray levels according to the size of the voltage, so pixel data is displayed on the screen by voltages provided by R, G, and B LED devices. It can be seen that it is implemented in the form of an image. Of course, the LED element can be dimmed by controlling the application time of the applied voltage, that is, through PWM control.

The peripheral circuit unit typically includes a parallel power supply unit (SMPS) (or a power supply unit) 103 that implements a pixel by providing voltages of different sizes as LED elements. The parallel power supply unit 103 converts the commercial power of AC 220V provided from the outside into DC, and the converted DC voltage level is controlled by the power control monitoring unit 105 or the integrated control device 110. The size of the pixel data is displayed on the display. For example, if the LED elements of G and B of R, G, and B constituting the pixel are turned off and only R is driven with the maximum voltage, the pixel is implemented as a red pixel. At this time, it can be seen that the gradation is expressed by adjusting the strength of the voltage applied to R. For example, the parallel power supply unit 103 may be configured to distribute a voltage of a specified level into a plurality of sizes by, for example, a resistor divider, and then select an appropriate distribution voltage according to the pixel data value and supply it to the LED device. Since the parallel power supply unit 103 according to the embodiment of the present invention drives the plurality of LED light emitting units 101 in line, it is possible to provide a plurality of voltages in parallel. To this end, the parallel power supply unit (SMPS) 103 may include a plurality of power supply units (eg, SMPS) as shown in FIG. 2. Each power supply is responsible for power supplied to each line. Of course, the power supplied to each line may be controlled by the control of the power control monitoring unit 105.

The parallel power supply unit 103 of FIG. 1 according to an embodiment of the present invention may include a plurality of power supply units, that is, SMPS, as shown in FIG. 2. Each SMPS is electrically connected to each other, and is also connected to a plurality of line-driven LED light emitting units (eg, LED module & unit #1-1, #2-1, #3-1). A plurality of power supply units operate by matching 1:1 with the number of lines driving a line, and when at least one of the power supply units operates abnormally, the operation of the corresponding power supply unit is stopped and the power supply unit is stopped. It can be divided into a dummy power supply unit that can supply power. That is, in the parallel power supply unit 103 according to an embodiment of the present invention, some of the plurality of power supply units are used as dummy power supply units. Here, the dummy power supply unit becomes an extra power supply unit. The dummy power supply unit is preferably configured to be less than the total number of lines in order to reduce the manufacturing cost of the electric signboard, and more precisely, it is desirable to be additionally configured within two. It can be seen that this is made possible by monitoring the operating states of a plurality of power supply units according to an embodiment of the present invention.

Meanwhile, in FIG. 2, a plurality of power supplies, that is, SMPSs, are all electrically connected to a plurality of LED light emitting units driven by line, but such a connection state may be changed. For example, each power supply unit, that is, the SMPS, is connected 1:1 so as to take charge of the supply power of each line, and thus, the plurality of power supply units 103 may not be electrically connected to each other. However, the dummy power supply unit is configured to operate by being connected to the LED light emitting units (eg, LED modules & units #1-1, #2-1, #3-1) of each line. When the power supply in charge of the supply power is abnormally operated, the operation thereof is stopped, and the dummy power supply connected thereto is operated, therefore, the embodiment of the present invention will not be particularly limited to the connection structure of FIG. .

The parallel power supply unit 103 according to the embodiment of the present invention includes a plurality of power supply units 103 that operate in an initially set manner when power is supplied to the display board 100, and at least one abnormal operation among the plurality of power supply units 103 It may be configured as a dummy power supply unit that is operated during operation. For convenience of explanation, in an embodiment of the present invention, the former may be referred to as a first power supply and the latter may be referred to as a second power supply. Of course, in the embodiment of the present invention, since it may be used as a meaning including a dummy power supply in the plurality of power supply units 103, it will not be specifically limited to such a classification in the embodiment of the present invention.

The power control monitoring unit 105 may be configured on a board, that is, on a substrate, and is configured by being connected to a plurality of power supply units, respectively, as shown in FIG. 2. The power control monitoring unit 105 is more precisely connected to the integrated control device 110 and the commercial power supply unit and operates. The power control monitoring unit 105 according to an embodiment of the present invention constitutes a Power Control Monitoring Unit (PCMU). The power control monitoring unit 105, that is, the PCMU, monitors the power state of the power supplied to each power supply unit 103. It is desirable to monitor the alternating current (AC) power source. For example, the power control monitoring unit 105 may sense a voltage or current supplied to the SMPS, which is a power supply unit, and cut off the AC power supplied based on the sensing result. For example, the power control monitoring unit 105 measures the current consumption of the SMPS in the form of an effective value, controls the connection, and transmits control and current information to an external device 120 such as a computer through communication. Other details will be described later with reference to FIG. 3.

The integrated control device 110 is a main control unit (MCU), and controls by integrating a plurality of PCMUs constituting the power control monitoring unit 105 of FIG. 1. The integrated control device 110 stores, analyzes, and controls current information received from each PCMU. The integrated control device 110, for example, if the deviation value of each SMPS current consumption based on the average of the RMS of current consumption of a plurality of SMPS received from each PCMU is less than 7%, the respective PCMU Make the LED lamp display green (e.g., normal), turn on the SSR to automatically supply power to each SMPS, and if it is 7-10%, the LED lamp of each corresponding PCMU is yellow (ex: failure prediction ), and turn on the SSR to automatically supply power to each SMPS, but operate the SSR with a button on the PCMU to turn it off and replace the SMPS. And when it exceeds 10%, each corresponding PCMU's LED lamp is displayed in red (eg, failure), and the SSR is turned off to automatically cut off the power to each SMPS. Here, the SSR may include a relay as a high voltage switching device.

The external device 120 includes various devices such as a desktop computer, a laptop computer, a tablet PC, a smart phone, and a wearable device. The external device 120 may install and execute a multi-LED viewer (MLV) according to an embodiment of the present invention. The external device 120 shows the analysis result and status of all SMPSs received from the MCU to a user (eg, an administrator, etc.) and allows the user to directly control the connection. MLV is green (normal) if the deviation value of each SMPS current consumption (RMS) based on the average of the effective current consumption values (RMS) of a plurality of SMPSs is less than 7%, yellow (failure prediction), 10% if it is 7-10%. If it is exceeded, it can be displayed in red (failure) in the corresponding area of SMPS or PCMU (e.g., status display LED lamp), if there is even one red, an error message is displayed, and if there is even one yellow, a warning message can be displayed. .

As a result of the above configuration, in the embodiment of the present invention, since a plurality of SMPSs supply power to the electric signboard in parallel with an input of AC 220V, for example, DC 5V, there is no interruption in the operation of the electric signage even if some SMPS malfunctions. A power control monitoring board, i.e., a board, is attached to the SMPS, and by utilizing the failure prediction information through the normal operation of the SMPS and the comparison and analysis of each SMPS current, uninterrupted power supply is possible with only a small amount of additional SMPS. 2 shows that only one more has been added. In addition, by controlling the AC 220V input line of the SMPS, it is possible to operate without interruption even during selection and replacement of defective SMPS.

For example, even when a module of a specific line fails, it operates as N (here, for example, N = 3) modules, enabling maintenance and repair without affecting the load and the entire system. Therefore, the lower the defect rate is, the less the number of additional components (α) can be, and if failure prediction is possible, uninterrupted operation with the minimum number of modules is possible. Accordingly, even if only one dummy power supply unit (SMPS) is added and configured as in FIG. 2, it is possible to efficiently operate the uninterrupted system.

Of course, by adding α modules to the first N parallel modules and driving it, the entire system enables uninterrupted operation and maintenance as long as α+1 or more modules do not fail at the same time. Therefore, the larger the quantity of α, the more the system The stability of is increased.

In this way, through the comparison and analysis of currents of a plurality of SMPSs supplying power to the display panel 100 in parallel, the failure state and failure of the SMPS is predicted, and power management for uninterrupted power supply to the display panel 100 with minimal addition of SMPS is possible. It will be possible.

For example, if SMPS is N=3, α = 1, if the maximum current consumption is 12(W) to the electric signboard, 4 SMPSs operate and supply power by 12/4 (W), but if one fails, Power is supplied to all four, but only the defective SMPS's AC 220V power is disconnected with a relay, and three SMPSs supply 12/3 (W) each. That is, the defective SMPS can be safely removed because the power is cut off.

3 is a block diagram showing a detailed structure of the power control monitoring unit (PCMU) of FIG. 2, and FIG. 4 is a view for explaining an operation state of the SMPS of FIG.

3, the power control monitoring unit 105 according to an embodiment of the present invention includes a status display unit (eg, LED lamp unit) 300, a user interface unit (eg button) 310, and a communication unit ( 320), a control unit 330, a relay unit 340, and a part or all of the sensor unit 350.

Here, "including some or all" means that some components such as the status display unit 300 or the user interface unit 310 are omitted, or some components such as the sensor unit 350 are the control unit 330 It is intended to mean something that can be integrated and configured with other components such as, and will be described as including all in order to help a sufficient understanding of the invention.

As shown in FIG. 4, the status display unit 300 may display the status by dividing the SMPS into three stages of normal, failure prediction, and failure. Of course, such a state of the state display unit 300 may be achieved by the control of the controller 330, and may include red, yellow, and green LEDs to display such a state.

Although a button is illustrated in FIG. 3, the user interface unit 310 can be any number of voice recognition units for recognizing and operating a user's voice, and further remote control, so that the embodiment of the present invention is specifically limited to any one form. I won't. When it is confirmed through the status display unit 300 that the operation state of the SMPS is an abnormal operation state, the user may cut off the power supply to the SMPS through the user interface unit 310. Accordingly, the user interface unit 310 can be regarded as receiving a user command for cutting off the power supply of the SMPS.

The communication unit 320 communicates with the integrated control device 110 of FIG. 1. The communication unit 320 may perform RS-485 communication. RS-485 is a communication method in which 3 lines are provided for serial communication, that is, serial communication, and 1 or 0 is determined by the voltage difference between the two signals. It is an excellent communication method that can communicate properly even when the cable is lengthened and the signal is weakened. In general, communication can be made between devices by transmitting the device ID as identification information together with data.

The communication unit 320 transmits the sensing data of the sensor unit 350, that is, data related to the power state of the supplied power, to the integrated control device 110 under the control of the control unit 330. In addition, the communication unit 320 receives a control signal received based on the transmitted power state related data and transmits the received control signal to the control unit 330. Here, the control signal may correspond to a signal for controlling the status display unit 300. Of course, a signal for controlling the relay unit 340 may be included.

The control unit 330 controls the overall control of the status display unit 300, the user interface unit 310, the communication unit 320, the relay unit 340 and the sensor unit 350 constituting the power control monitoring unit 105 of FIG. In charge of the movement. Typically, the control unit 330 controls the communication unit 320 to provide sensing data of the sensor unit 350, that is, sensing data of voltage or current, to the integrated control device 110, and is also provided based on the sensing data. While controlling the status display unit 300 according to the control signal, when a problem occurs in the AC power supplied at the same time, the relay unit 340 is controlled to cut off the supplied AC power. Of course, after the shutdown, the controller 330 may notify or respond to the related state to the integrated control device 110, and the integrated control device 110 may control the PCMU connected to the dummy power supply to operate accordingly.

The relay unit 340 is more precisely a switching unit, and may include a relay element because it performs high voltage switching. AC power supplied by an ON or OFF operation under the control of the controller 330 may be cut off and supplied. In an exemplary embodiment of the present invention, the AC power supplied may be cut off by operating off according to a control signal from the controller 330 in the process of always operating in the ON state.

The sensor unit 350 is connected to a supply line to which AC power is supplied to sense a voltage or current. Through this, the sensor unit 350 can determine whether an abnormality has occurred in the supplied power. For example, the sensor unit 350 may sense the current of the supplied AC power.

The sensor unit 350 provides the sensing data of the current to the integrated control device 110 and further to the external device 120 through the control unit 330 so that the analysis is performed, and the effective value of the consumption current is measured. do. For example, as shown in FIG. 4, the deviation may be measured by calculating an average of the total amount of current consumed by all SMPSs.

In addition, since detailed information related to the status display unit 300, the user interface unit 310, the communication unit 320, the control unit 330, the relay unit 340, and the sensor unit 350 of FIG. 3 has been sufficiently described above, I want to replace it with the contents.

5 is a flowchart illustrating a driving process of an uninterrupted parallel power electronic display board according to an embodiment of the present invention.

For convenience of explanation, referring to FIG. 5 together with FIGS. 1 and 2, in an uninterrupted parallel power electronic display board 100 according to an embodiment of the present invention, a plurality of LED light emitting units 101 configured in a matrix form are separated and driven for each line. An image is implemented on the screen of the display unit (S500). Such an image may include an advertisement image.

In addition, a plurality of power supply units (eg, SMPS) 103 that are electrically connected to each other supply power to the plurality of LED light-emitting units 101 forming a line in a parallel form (S510).

Further, the electric sign 110 is operated, that is, for uninterrupted power supply when a dummy power supply connected to the plurality of power supply units 103 is abnormally operated at least one of the plurality of power supply units 103 (S520). Therefore, although the dummy power supply may include at least one SMPS, it is preferable that the dummy power supply is configured with a total number of lines or less.

Of course, here, the display board 110 may operate by matching 1:1 with the plurality of power supply units 103, that is, the plurality of first power supply units forming a line, and the SMPS of the line During an abnormal operation, a second power supply unit, which is a dummy power supply unit, may be operated and connected to operate in place of the SMPS of the corresponding line. Accordingly, if the first power supply unit is in charge of only one line, the second power supply unit, which is a dummy power supply unit, operates by being connected to all lines, so it can be considered to be selectively operated. For example, the dummy power supply unit can supply power to the first line when a problem occurs in the power supply of the first line, but if time passes after the SMPS of the first line is repaired, if there is a problem with the power supply of the third line. If there is, it may be operated to supply power to the corresponding third line, through which the uninterrupted operation of the power may be possible.

In addition, the electronic board 110 monitors the power state of the supplied power by a plurality of power supply units and a plurality of power control monitoring units 105 connected to the dummy power supply unit (S530). For example, it is possible to sense the current of the supplied AC power to monitor the power state.

In addition to the above, the uninterrupted parallel power electronic display board 100 according to an embodiment of the present invention can perform various operations, and other details have been sufficiently described above, and thus the contents will be substituted.

On the other hand, even if all the constituent elements constituting an embodiment of the present invention are described as being combined into one or operating in combination, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all of the constituent elements may be selectively combined and operated in one or more. In addition, although all the components may be implemented as one independent hardware, a program module that performs some or all functions combined in one or more hardware by selectively combining some or all of the components. It may be implemented as a computer program having Codes and code segments constituting the computer program may be easily inferred by those skilled in the art of the present invention. Such a computer program is stored in a non-transitory computer readable media that can be read by a computer and is read and executed by a computer, thereby implementing an embodiment of the present invention.

Here, the non-transitory readable recording medium is not a medium that stores data for a short moment, such as a register, cache, memory, etc., but a medium that stores data semi-permanently and can be read by a device. . Specifically, the above-described programs may be provided by being stored in a non-transitory readable recording medium such as a CD, DVD, hard disk, Blu-ray disk, USB, memory card, ROM, or the like.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and is generally used in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Various modifications are possible by those skilled in the art of course, and these modifications should not be individually understood from the technical idea or perspective of the present invention.

101: LED light-emitting unit (or LED module) 103: parallel power supply
105: power control monitoring unit 110: integrated control device
120: external device 300: status display
310: user interface unit 320: communication unit
330: control unit 340: relay unit
350: sensor unit

Claims (12)

A display unit that implements an image on a screen by separately driving a plurality of LED light emitting units configured in a matrix form for each line;
A plurality of power supply units that supply power for realizing the image to a plurality of LED light emitting units forming the line, and operate by matching 1:1 with the number of lines;
An extra dummy power supply for supplying normal power to the LED light emitting unit in place of the interrupted power supply unit according to an operation interruption of the abnormally operated power supply unit during abnormal operation of at least one of the plurality of power supply units;
To monitor the power status of AC power supplied to the commercial power supply unit, the plurality of power supply units and the dummy power supply unit to be connected to the plurality of power supply units and the dummy power supply unit, and to express the pixel data value on the display unit A plurality of power control monitoring units configured to control, by control, a magnitude of a DC voltage obtained by converting the AC power into a DC voltage by the plurality of power supply units and the dummy power supply unit; And
Receives sensing data of the power state from the plurality of power control monitoring units, and integrally controls the plurality of power control monitoring units based on the received detection data, and from a power control monitoring unit connected to the interrupted power supply unit. Including; but, in accordance with a notification, an integrated control device for controlling the power control monitoring unit connected to the dummy power supply to operate.
The integrated control device,
The power status of the monitored power is displayed based on the deviation value of current consumption of each power supply based on the average of RMS of current consumption of the plurality of power supply units received from the plurality of power control monitoring units. So that the power of each power supply is cut off,
The output of the dummy power supply unit,
All of the inputs of the plurality of LED light emitting units separately driven for each line are electrically connected,
The dummy power supply unit is additionally configured in a range smaller than the number of lines. delete The method of claim 1,
Each power control monitoring unit,
A sensor unit for sensing the power state of the AC power supplied for each line;
A relay unit for blocking AC power supplied to each power supply unit or dummy power supply unit based on the sensed detection result;
Including uninterrupted parallel power display board. The method of claim 3,
Each of the power control monitoring unit,
A status display unit for externally displaying the power status of the monitored power supply; And
A user interface unit for receiving a user command for shutting off the AC power provided based on the display;
Uninterrupted parallel power display further comprising. delete The method of claim 1,
The integrated control device provides an analysis result of the received sensing data and status information on the plurality of power supply units to a user terminal device to request user control. Implementing an image on a screen of a display unit by separately driving a plurality of LED light emitting units configured in a matrix form for each line;
A plurality of power supply units supplying power for implementing the image to a plurality of LED light emitting units forming the line, and operating by matching 1:1 with the number of lines;
Supplying, by a dummy power supply unit, normal power to the LED light emitting unit in place of the interrupted power supply unit according to an operation stop of the abnormally operating power supply unit when at least one of the plurality of power supply units is abnormally operated;
The commercial power supply unit, the plurality of power supply units, and the plurality of power control monitoring units connected to the dummy power supply unit monitor power states of AC power supplied to the plurality of power supply units and the dummy power supply unit, and the display unit Controlling, by controlling, a DC voltage level obtained by converting the AC power into a DC voltage by the plurality of power supply units and the dummy power supply unit to represent a value of pixel data; And
The integrated control device receives detection data of the power state from the plurality of power control monitoring units and controls the plurality of power control monitoring units based on the received detection data, and power connected to the interrupted power supply unit Controlling a power control monitoring unit connected to the dummy power supply unit to operate according to a notification from the control monitoring unit; including,
The integrated control device monitors the current consumption deviation value of each power supply unit based on an average of RMS values of current consumption of the plurality of power supply units received from the plurality of power control monitoring units. The step of causing the power state of the power to be displayed and turning off the power of each power supply; further comprising,
The output of the dummy power supply unit,
All of the inputs of the plurality of LED light emitting units separately driven for each line are electrically connected,
The dummy power supply unit is additionally configured within a range smaller than the number of lines. delete The method of claim 7,
A sensor unit included in each power control monitoring unit detecting a power state of an alternating current (AC) power supplied for each line; And
A relay unit included in each of the power control monitoring units shutting off AC power supplied to each power supply unit or dummy power supply unit based on the detected detection result;
Driving method of an uninterrupted parallel power electronic display board including. The method of claim 9,
A state display unit included in each of the power control monitoring units, displaying a power state of the monitored power to the outside; And
Receiving, by a user interface unit included in each of the power control monitoring units, a user command for shutting off the AC power provided based on the display;
Driving method of an uninterrupted parallel power electronic display further comprising. delete The method of claim 7,
And requesting user control by providing, by the integrated control device, an analysis result of the received sensing data and status information on the plurality of power supply units to a user terminal device, the method of driving an uninterrupted parallel power electronic display board further comprising.

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