KR102346865B1 - Led module signal duplexing apparatus - Google Patents

Abstract

According to one embodiment of the present invention, provided is an LED module signal duplexing apparatus (100). The apparatus detects failure of an LED module by comparing display data and a control signal input to the LED module with display data and a control signal output from the LED module in real time and performs signal duplexing that outputs the display data and the control signal input to the LED module by alternating the display data and the control signal output from the LED module in case of failure occurrence so as to ensure that there is no problem with signal output of a certain LED module with failure and a display of an image from a connected LED module to an end LED module by automatically converting a signal in case of failure of the certain LED module.

Description

LED module signal duplication device {LED MODULE SIGNAL DUPLEXING APPARATUS}

The present invention relates to an electric sign board, and more particularly, to monitor the LED module status of the electric sign board to determine a failure for each LED module, and even when a failure LED module occurs, a normal position located after the failure LED module It relates to an LED module signal redundancy device configured to duplicate and transmit a signal input to an LED module constituting an electric signboard so that an image can be normally displayed from the LED module.

In general, as a means of delivering texts and images to unspecified people using a single medium, it is well known that outdoor electronic signs are widely used as large information boards in playgrounds, traffic information boards on roads, railroad passenger/travel information boards, outdoor billboards, etc. the fact of

The electronic display board used in this way is to receive and display the video signal transmitted by the main controller properly re-editing the video source transmitted from the operation unit including the video source such as text, image, and video and the operation equipment such as the operating PC. is composed

1 is a schematic configuration diagram of a prior art electric sign having the above-described configuration.

As shown in Figure 1, a general electric sign board is composed of either the main controller 2 or the main controller 2 and the operation control PC 3 that transmits the data to be displayed to the LED module 11 to the local controller 7 The electric signboard control unit 1, the local controller 7 that extracts the data to be displayed and transmits the expression data to the LED module 11 to display and control the LED module 11, and a plurality of the LED modules 11 It is configured to include an LED module array 10 configured to be connected so that expression data and control signals are transmitted in a serial manner.

In this case, an image is displayed on the LED modules 11 connected in series. When a failure occurs in any one of the LED modules 11 connected in series, the normal LED modules 11 connected thereafter Also, there is a problem that the image cannot be displayed. In addition, it is impossible to visually confirm whether a failure occurs in the first LED module 11 that cannot be expressed among the LED modules 11 that cannot display an image or a failure occurs in the front end LED module 11 . That is, since the LED control signal and the displayed data are transmitted to the LED module 11 in a serial manner, it is known whether a failure has occurred in the LED module of the previous stage that supplies the input signal to the faulty LED module 11 or the faulty LED module itself. There is a problem that it cannot be done.

As a method of detecting the failure of the LED module 11 as described above, there are a method of using a camera, a method of using an Open-Circuit Detection to detect (LOD) function provided by the LED driver IC chip, and the like, as described above. In the faulty state of the LED module 11, normal LED modules 11 other than the faulty LED module 11 are supplied by duplicating control and data signals as in Korean Patent Registration No. 10-1644757, etc. so that images can be displayed normally. Methods are provided.

Among these, the method of using a camera is to determine whether there is an abnormality in the LED module of the electric sign board by visual inspection of the transmitted image by the camera shooting the contents of the LED sign board and real-time visual inspection. However, there is a problem in that real-time obstacles cannot be identified.

And the method of using the LOD (Open-Circuit Detection to detect) function provided by the LED driver IC chip can check whether the LED chip is defective, but the LEDs, ICs, registers, and capacitors that make up the LED module . There is a problem in that it is not possible to check the status of failures caused by components such as ... and other failures other than the presence or absence of a defective LED chip simply because it cannot be performed.

And in the failure state of the LED module 11 as described above, the normal LED modules 11 other than the faulty LED module 11 are doubled and supplied with control and expression data signals so that they can be displayed normally. , local controller (SCU) redundancy, etc., is performed by monitoring individual LED module failures in real time, and when an LED module failure occurs, the signal is automatically transferred to the next normal LED module without going through the failed LED module. It does not provide a way to do it.

Republic of Korea Patent No. 10-1644757

Therefore, one embodiment of the present invention for solving the problems of the prior art described above is to automatically switch the signal in case of a failure of a specific LED module to the LED module from the LED module connected to the signal output of the specific LED module in which the failure occurred to the terminal LED module. It is a task to be solved to provide an LED module signal redundancy device that eliminates the problem of expression.

In addition, another embodiment of the present invention compares and determines the input/output signals (OE, LATCH, CLOCK, DATA..., etc.) of the LED module in units of the LED module in real time to provide the LED module failure status information to the main controller (MCU) or Another solution is to provide an LED module status monitoring function that allows the operator to easily identify the location of the faulty LED module and the type of fault by transmitting it to the electronic display control unit composed of the main controller (MCU) and the operation control PC. make it a task

In addition, another embodiment of the present invention provides a voltage level power monitoring function to monitor the LED module due to a defective or poor contact in the power terminal and power cable assembly of the LED module, thereby broadening the monitoring range so that the cause of the failure can be easily identified. Another task to be solved is to provide an LED module signal redundancy device that allows

One embodiment of the present invention for achieving the above-described problem of the present invention, after receiving the display data and control signal from the local controller 7, the display data in the LED module 11 serial shift (Serial Shift) ) by shifting the received expression data as much as the calculation unit 130 to generate and output the expression data and control signal to be compared in the comparison unit 140; By comparing the expression data and control signal output from the LED module 11 and the expression data and control signal output from the operation unit 130 in real time, if the same, the LED module 11 is treated as normal, and if not the same In this case, the LED module 11 is treated as a disability, and a control signal is transmitted to the switching unit 150 so that an input path having the expression data and control signal to be output from the switching unit 150 can be selected and output according to the presence or absence of a failure. Comparator 140; And in the conversion unit 150 according to the control signal of the comparison unit 130 among the path of the expression data and control signal output from the operation unit 130 and the path of the expression data and control signal output from the LED module 11 LED module signal redundancy device 100, characterized in that it comprises a; by selecting an input path to be output, the conversion unit 150 for outputting the expression data and control signal of the selected input path to the LED module signal redundancy device of the next stage; ) is provided.

The LED module signal redundancy device 100 includes a terminal for receiving the expression data and control signal from the local controller 7, a terminal for outputting the expression data and control signal to the LED module 11, the LED module 11 It may be configured to further include a terminal unit 110 including a terminal for receiving the expression data and control signal of the input, and terminals for outputting the expression data and control signal to the next LED module signal duplication device (100).

The terminal unit 110 receives the expression data and control signal from the local controller 7 or the LED module signal duplication device 100 and outputs the first input to the operation unit 130 and the isolation unit 120 . terminal 113; a first output terminal 115 for outputting the expression data and control signal input through the first input terminal 113 to the LED module 11 through the isolation unit 120; a second input terminal 117 for receiving the expression data and control signals output from the LED module 11 and outputting them to the comparison unit 140 and the conversion unit 150; and outputting the expression data and control signal received from the LED module 11 in the conversion unit 150 or the expression data and control signal received from the operation unit 130 to the LED module signal redundancy device 100 of the next stage 2 output terminals 119; characterized in that it is configured to include.

The LED module signal redundancy device 100 further includes an isolation unit 120 for isolating so as not to interfere with the displayed data and control signals input to the first input terminal 113 due to the failure of the LED module 11 . can be configured.

The LED module signal redundancy device 100 monitors the internal power of the LED module 11, and the LED module 11 according to a defective or poor contact of the power terminal 17 and the power cable assembly of the LED module 11. ) of the internal voltage change (for example, when the normal voltage is DC 5V, when the monitoring voltage falls below DC 4.5V, it is judged as a failure) in real time; the power monitoring unit 170 for real-time monitoring; further comprising, the terminal unit 110 may be configured to further include; a power monitoring terminal 111 for connecting the power test terminal and the power monitoring unit 170 inside the LED module 11 .

The LED module signal redundancy device 100 displays and manages the LED module status including the display data and control signal of the LED module 11 and the DC power status, and requests the LED module status information from the electric signboard control unit 1 The LED module status management unit 160 for transmitting the LED module status information to the electronic signboard status management unit 5 when receiving is; characterized in that it further includes.

The LED module signal redundancy device 100 may further include a reset button 180 for converting the data of the 'state management address' of the LED module state management unit to 'normal'.

The present invention having the above configuration provides an effect of automatically switching signals when a specific LED module fails, so that there is no problem in the display of images from the LED module connected to the output signal output of the specific LED module having the failure to the terminal LED module. .

In addition, the present invention compares and determines the input/output signals (OE, LATCH, CLOCK, DATA..., etc.) of the LED module in units of the LED module in real time to provide the LED module failure status information to the main controller (MCU) or the main controller (MCU). ) and operation control PC, it is transmitted and displayed to the electronic display control unit, thereby providing the effect of allowing the operator to easily identify the location of the faulty LED module and the type of fault.

In addition, the present invention provides a power monitoring function that monitors the power voltage drop inside the LED module due to a contact failure between the power terminal and the power cable assembly of the LED module, thereby broadening the monitoring range and enabling easy identification of the cause of the failure. provides

1 is a schematic configuration diagram of an electric sign board of the prior art.
2 is a view showing a functional block of the LED module signal redundancy device 100 according to an embodiment of the present invention, and a connection state of the electric signboard control unit 1, the local controller 7, and the LED module 11. As shown in FIG.
3 is a view showing a state in which the LED module signal redundancy device 100 of the present invention is connected to the LED module 11 of the LED module array 10 .

In the following description of the present invention, if it is determined that a detailed description of a related well-known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

Since the embodiment according to the concept of the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the present specification or application. However, this is not intended to limit the embodiment according to the concept of the present invention to a specific disclosed form, and it should be understood that the present invention includes all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

When an element is referred to as being “connected” or “connected” to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle. Other expressions describing the relationship between elements, such as "between" and "immediately between" or "neighboring to" and "directly adjacent to", etc., should be interpreted similarly.

The terminology used herein is used only to describe specific embodiments, and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as “comprise” or “have” are intended to designate that the described feature, number, step, operation, component, part, or a combination thereof exists, and includes one or more other features or numbers. , it is to be understood that it does not preclude the possibility of the existence or addition of steps, operations, components, parts, or combinations thereof.

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

In the description of the embodiment of the present invention, the expression data and the control signal are signals input and output to the LED module 11, and the expression data corresponds to the expression color of the LED chip, and the control signal is the expression ON/OFF of the LED chip, the brightness of the color , means a signal for controlling grayscale, shifting of expressed data, and the like. This meaning may vary depending on the LED driving drive IC applied to the LED module 11, and the control signal generated by the expression data generation unit 4 and transmitted to the local controller 7 has a different meaning from the control signal.

2 is a view showing the functional block of the LED module signal duplication device 100 according to an embodiment of the present invention, the electronic sign board control unit 1, the local controller 7, and the connection state of the LED module 11, and FIG. 3 is It is a diagram showing a state in which the LED module signal redundancy devices 100 of the present invention are connected to the modules 11 .

Among the configurations of FIGS. 2 and 3, the electric sign control unit 1 is configured to include a main controller 2 or a main controller 2 and an operation control PC 3, as shown in FIG. 1 or FIG. 3, and an LED module ( 11) generates expression data and control signals for the image to be displayed on a frame-by-frame basis, transmits the generated expression data and control signal to the local controller 7, and communicates with the LED module signal redundancy device 100 to communicate with the LED module 11 ) is configured to manage the state of

To this end, the electric sign control unit 1, as shown in FIG. 2, transmits the image to be displayed through the LED modules 11 constituting the electric sign in units of frames to the local controller 7 by generating display data and control signals. It is configured to include an expression data generating unit (4) and an electric sign board state management unit (5) for monitoring the status of all LED modules (11) constituting the electric sign board. The expression data generating unit 4 of FIG. 2 may be configured in the main controller 2 , and the electronic signboard state management unit 5 may be configured in the main controller 2 or the operation control PC 3 .

The expression data generation unit 4 generates expression data and control signals for the image to be displayed in frame units, and transmits the expression data and control signals to the local controller 7 and the environment of the local controller 7 function to set.

The signboard state management unit 5 is configured to display the state of all LED modules of the electric signboard such as normal LED module, faulty LED module, power failure, initialization, etc. . In addition, it may be configured so that an operator can manually perform environmental settings and control of the LED module signal redundancy devices 100 . In addition, a failure notification and location are displayed for a faulty LED module, and an operator can easily recognize the location of the faulty LED module and take action through a sound notification (eg beep beep) with a built-in speaker. And it may be configured to request status information from the LED module signal redundancy devices 100 at a defined period, to express the received status information by this, and to store all transmitted and received communication data and occurrence time information as a file. In this case, the file may be named as a daily or monthly file name. In addition, the operator reads the stored state information file to understand the failure flow such as the distribution, occurrence rate, and trend of failure. This function can help the operator to find other causes when frequent failures of the LED module occur in a specific location because the factors that cause the failure may be elsewhere.

And when power is supplied (batch, step-by-step) to the signboard, the signboard status management unit 5 'clears' with the LED module signal redundancy devices 100 after a defined warm-up time (eg, 10 seconds, etc.) has elapsed. (clear)' command is transmitted once and a response is received. That is, the LED module signal redundancy devices 100 notify that power is normally supplied to the LED signboard and perform this function. If the overall warm-up time by calculation cannot be known, the time difference from the time when power is supplied to the electric sign board to the time when an image is visually confirmed to be displayed on the electric sign board can be defined as the warm-up time. Also, if necessary, the ‘clear’ command may be transmitted more than once.

The LED module status can be defined in the form of a bit flag (BIT FLAG) as shown below.

Initialization: 0b11111111, LED module signal normal: 0bxxxxxxxx0, LED module signal failure: 0bxxxxxxxx1 , LED module power normal: 0bxxxxxx0x , LED module power failure: 0bxxxxxx1x.

The above-described definition of the LED module state may be given a different value or different meaning depending on the environment and needs.

The local controller 7, when receiving the expression data and control signal from the electric sign control unit 1, extracts the expression data of the expression area set in itself, the expression data and control signal to the LED module array composed of LED modules is configured to output

As shown in Figure 2, the LED module signal redundancy device 100 of an embodiment of the present invention, the terminal (first input terminal 113) for receiving the expression data and control signal from the local controller 7, the LED module ( 11) to a terminal (first output terminal 115) for outputting expression data and control signals, a terminal for receiving expression data and control signals of the LED module 11 (second input terminal 117), the next LED Terminal unit 110 including terminals (second output terminals 119) for outputting data and control signals to be output to the module signal duplication apparatus 100; and a first input terminal ( 113), the isolation unit 120 for isolating so as not to interfere with the input data and control signal; And, after receiving the data and control signal from the local controller 7, the display data from the LED module 11 The operation unit 130 for generating and outputting the expression data and control signal to be compared in the comparison unit 140 by shifting the received expression data as much as a serial shift (Serial Shift); and in the LED module 11 By comparing the output data and control signal and the expression data and control signal output from the operation unit 130 in real time, if the same, the LED module 11 is treated as normal, and if not the same, the LED module 11 is a comparator 140 that processes as a disabled person and transmits a control signal to the conversion unit 150 so as to select and output an input path having expression data and control signals to be output from the conversion unit 150 according to the presence or absence of a failure; Output from the conversion unit 150 according to the control signal of the comparison unit 130 among the path of the expression data and control signal output from the operation unit 130 and the path of the expression data and control signal output from the LED module 11 It may be configured to include; a conversion unit 150 that selects an input path to be output and outputs the expression data and control signal of the selected input path to the LED module signal duplication device 100 of the next stage.

In addition, the LED module signal redundancy device 100 displays and manages the LED module status including the display data and control signal of the LED module 11 and the DC power status, and LED module status information from the electric signboard control unit 1 LED module status management unit 160 that transmits the LED module status information to the electronic signboard status management unit 5 when receiving a request from; and the power of the LED module 11 by monitoring the power inside the LED module 11 Real-time monitoring of internal voltage fluctuations of the LED module 11 (for example, if the normal voltage is DC 5V, if the monitoring voltage falls below DC 4.5V, it is judged as a failure) due to a defect in the terminal 17 and the power cable assembly or poor contact Power monitoring unit 170 to monitor; and a reset button 180 for converting the data of the 'state management address' of the LED module state management unit 160 to 'normal'; may be configured to further include.

The terminal unit 110 includes a power monitoring terminal 111 for inputting a voltage change inside the LED module 11 from the power test terminal inside the LED module 11 to be monitored by the power monitoring unit 170; and a first input terminal 113 for receiving the expression data and control signals from the local controller 7 and outputting them to the operation unit 130 and the isolation unit 120 ; a first output terminal 115 for outputting the expression data and control signal input through the first input terminal 113 to the LED module 11 through the isolation unit 120; a second input terminal 117 for receiving the expression data and control signals output from the LED module 11 and outputting them to the comparison unit 140 and the conversion unit 150; and outputting the expression data and control signal received from the LED module 11 in the conversion unit 150 or the expression data and control signal output from the operation unit 130 to the LED module signal redundancy device 100 of the next stage. 2 output terminals 119; is configured to include.

The LED module signal redundancy device 100 of the above configuration has a number corresponding to the LED module 11 and is installed for each LED module, and performs a redundancy function of real-time monitoring of the status of the LED module 11 and signal switching in case of failure. Alternatively, the LED module signal redundancy device 100 may be configured to process a plurality of LED modules 11 . The LED module signal redundancy device 100 may be formed integrally with the LED module 11 or may be installed separately from the LED module 11 .

In a simple comparison of the built-in type and the separate type, if the LED module 11 is integrally built-in, when replacing the faulty LED module 11, the power supplied to all LED modules of the display board is cut off, and the LED module 11 is replaced after the electric sign board LED module (11) that is connected to the output signal of the faulty LED module (11) while replacing the LED module (11) without stopping the power supply to the LED module (11) There is a disadvantage in that incorrect contents are displayed from to the end of the LED module 11, but since the LED module signal redundancy device 100 is built into the LED module 11, the simplicity of wiring and the process of assembling the electric sign board are simpler than the separate type. have.

When installed separately from the LED module 11, when replacing the faulty LED module 11, only the faulty LED module 11 is replaced without a problem in displaying the LED module 11 other than the faulty LED module 11 even in the operating state of the electronic sign board. It has the advantage of allowing the LED module signal redundancy device 100 to be additionally installed easily without change on the previously installed electronic sign board, but in order to monitor the power of the LED module 11, Since the power monitoring terminal is added to the existing LED module 11 or the power monitoring function is not applied and the LED module signal redundancy device 100 must be installed for each LED module 11, the assembly time of the electric sign board is shorter than that of the built-in LED module 11. The disadvantage is that it takes additional time.

The LED module signal redundancy device 100 of the above configuration is installed as much as the number of LED modules 11 included in the LED module array, and the first LED module signal redundancy device 100 is the LED module signal redundancy device 100 of The first input terminal 113 is connected to the local controller 7 .

That is, the LED module signal redundancy device 100 interlocking with the first LED module 11 receives the expression data and control signal from the local controller 7, and then the LED module signal interlocking with the LED modules 11. The first input terminal 113 to which the expression data and control signal of the duplexing devices 100 are input is the expressed data and the control signal through the second output terminal 119 of the LED module signal duplication apparatus 100 located in the previous stage. connected to receive input.

And the LED module status management unit 160 of each LED module signal redundancy device 100 is all connected to the electronic sign board status management unit 5 of the electronic sign control unit 1 in a two-way communication method.

The first input terminal 113 connected to the local controller 7 is connected in parallel to the isolation unit 120 and the operation unit 130 to transmit the expressed data and control signals to the isolation unit 120 and the operation unit 130 . do.

And the isolation unit 120 outputs the data and the control signal to the LED module 11 connected to the first output terminal 115. When the connected LED module 11 fails and interference (for example, a HIGH signal changes to a LOW signal) occurs in the displayed data or control signal input to the LED module 11, the input to the first input terminal 113 The displayed data or the control signal is also interfered, and the calculation unit 130 may perform an erroneous calculation operation. In addition, the LED module signal redundancy device 100 may be damaged due to an electrical effect generated from the faulty LED module 11 . Accordingly, the isolation unit 120 separates the primary side that receives the expression data and control signal through the first input terminal 113 and the secondary side that outputs the expression data and the control signal to the first output terminal 115 It is configured so as not to receive interference due to the failure of the LED module 11 .

In addition, the operation unit 130 is connected to the first input terminal 113 to receive expressed data and control signals, and the output of the operation unit 130 is connected in parallel to the comparison unit 140 and the conversion unit 150 . The displayed data among the expression data and the control signal received through the first input terminal 113 is shifted as much as the displayed data is serially shifted by the LED module 11 and compared in the comparison unit 140 . The output data and the control signal are generated and output to the comparator 140 and the conversion unit 150 .

The comparison unit 140 compares the expression data and control signals output from the operation unit 130 to the expression data and control output from the LED module output terminal 15 of the LED module 11 connected to the second input terminal 117 . If it is different from the signal compared in real time, it is determined that there is a failure in the LED module and recorded as 'disorder' in the 'state management address' of the LED module state management unit 160, and the control signal of the operation unit 140 is set to HIGH. The expression data and the control signal output of the operation unit 130 input to the input (B) of the conversion unit 150 are output as the output (C) of the conversion unit 150 . Alternatively, when the comparison in the comparison unit 140 is 'normal', the control signal of the comparison unit 140 is set to LOW and the LED module output terminal of the LED module 11 is input to the input A of the conversion unit 150. (15) to output the output data and the control signal to the output (C) of the switching unit (150). That is, the comparison unit 140 continues to maintain the 'failure' state even if the current comparison result is determined to be 'normal', if the 'status management address' of the LED module state management unit 160 is 'disabled' The control signal of the comparator 140 is also continuously processed as HIGH.

The conversion unit 150 is output from the LED module output terminal 15 of the LED module 11 that is input to the expression data and control signal and the input (A) path of the operation unit 13 input to the input (B) path It is configured to select and output the displayed data and the control signal as the output C of the switching unit 150 according to the control signal of the comparator 140 . That is, when the control signal of the comparator 140 is LOW, the signal input to the input (A) is output as the output (C), and when the control signal of the comparator 140 is HIGH, the signal input to the input (B) has a signal duplication structure that is output as an output (C).

This real-time LED module status monitoring and signal redundancy technology is applied, even when a failure occurs in the LED module 11, subsequent normal LED modules 11 can display the display data normally.

The LED module status management unit 160 manages the LED module status information including the display data and control signals and the DC power status of the LED module 11, and receives a request for LED module status information from the electronic signboard control unit 1 In this case, it is configured to transmit the LED module status information to the front panel status management unit 5 .

In the power monitoring unit 170, the power monitoring terminal 111 is connected to the power monitoring terminal inside the LED module 11, so that the power terminal 17 of the LED module 11 and the power cable assembly are defective or contacted. It is configured to monitor in real time whether there is a defect by measuring the voltage of the power test terminal inside the LED module 11 in real time (for example, if it is measured as DC 4.5V or less based on DC 5V, it is sold as a failure).

The above description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

1: Electronic sign board control unit
2: Operation control PC
3: main controller
4: Expression data generation unit
5: Electronic sign board status management unit
7: local controller
10: LED module array
11: LED module
13: LED module input terminal
15: LED module output terminal
17: LED module power terminal
100: LED module signal redundancy device
110: terminal part
111: power monitoring terminal
113: first input terminal
115: first output terminal
117: second input terminal
119: second output terminal
160: LED module status management unit
170: power monitoring unit
180: reset button

Claims (5)

After receiving the expression data and control signal from the local controller 7 or the previous LED module signal duplication device 100, the received expression data as much as the serial shift of the expression data in the LED module 11 an operation unit 130 for generating and outputting expressed data and a control signal to be compared in the comparison unit 140 by performing a shift operation;
By comparing the expression data and control signal output from the LED module 11 and the expression data and control signal output from the operation unit 130 in real time, if the same, the LED module 11 is treated as normal, and if not the same In this case, the LED module 11 is treated as a disability, and a control signal is transmitted to the switching unit 150 so that an input path having the expression data and control signal to be output from the switching unit 150 can be selected and output according to the presence or absence of a failure. Comparator 140; and
Output from the conversion unit 150 according to the control signal of the comparison unit 140 among the path of the expression data and control signal output from the operation unit 130 and the path of the expression data and control signal output from the LED module 11 A conversion unit 150 that selects an input path to be selected and outputs the expression data and control signal of the selected input path to the LED module signal duplication device of the next stage;
A terminal for receiving the expression data and control signal from the local controller 7, a terminal for outputting the expression data and control signal to the LED module 11, a terminal for receiving the expression data and control signal of the LED module 11 , and then a terminal unit 110 including terminals for outputting data and control signals to the LED module signal redundancy device 100,
The terminal part 110,
a first input terminal 113 for receiving the expression data and control signals from the local controller 7 and outputting them to the operation unit 130 and the isolation unit 120;
a first output terminal 115 for outputting the expression data and control signal input through the first input terminal 113 to the LED module 11 through the isolation unit 120;
a second input terminal 117 for receiving the expression data and control signals output from the LED module 11 and outputting them to the comparison unit 140 and the conversion unit 150; and
A second outputting data and control signal received from the LED module 11 in the conversion unit 150 or the expression data and control signal output from the operation unit 130 to the LED module signal duplication device 100 of the next stage output terminal 119; including;
When the display data and control signals input to the first input terminal 113 are faulty in the LED module 11, the display data and control signals input to the first input terminal 113 by the LED module 11 and is configured to include an isolation unit 120 to prevent interference or damage to the LED module signal redundancy device 100,
The conversion unit 150 is an input path (A) of the expression data and control signal output from the LED module output terminal 15 of the LED module 11 and the input path of the expression data and control signal output from the operation unit 130 (B) LED module signal duplication device, characterized in that it has a signal duplication structure for outputting by selecting one. delete delete delete According to claim 1,
Monitoring the power supplied to the inside of the LED module 11 to monitor the internal voltage fluctuation of the LED module 11 in real time due to a defect or contact failure of the power terminal 17 and the power cable assembly of the LED module 11 Power monitoring unit 170; further comprising,
The terminal part 110,
and a power monitoring terminal 111 for detecting power supplied to the LED module 11 from the power terminal 17 of the LED module 11 and outputting it to the power monitoring unit 170; LED module signal redundancy device.

Images