KR20110130785A - Led apparatus for effective error detection and providing method thereof - Google Patents

Abstract

PURPOSE: LED apparatus for efficiently sensing a fault and a providing method thereof are provided to diagnose a fault and perform the quick maintenance and repair of the fault at little cost by accurately grasping a defective LED or LED sets including the defective LED. CONSTITUTION: An LED apparatus(100) includes a plurality of LEDs(20-1-20-8), a drive unit(10), and a detection unit(30). The drive unit drives the plurality of the LEDs. The detection unit detects a current which flows in the LED driven among a plurality of the LEDs and a voltage which is applied to a predetermined resistance with the current of the drive unit. A processor(50) outputs a control signal which selectively drives the plurality of the LEDs.

Description

LED apparatus for effective failure detection and providing method thereof

The present invention relates to a device including a plurality of light-emitting diodes (LEDs) (e.g., a lighting device or an information display device, etc.), whether there is a broken LED among the plurality of LEDs, and which LEDs are present. The present invention relates to a device capable of efficiently detecting whether a failed LED exists and / or whether an LED is a failed LED and a method of providing the same.

As LEDs of various colors and outputs have been recently developed, a large number of LEDs, including BLU (back-light unit) for TVs, LED lighting and LED display boards, can be utilized by utilizing LED's excellent color reproducibility, low power consumption, high speed switching, and long lifespan. Various devices for operating are being developed. In addition, the size of such a device has also become larger.

For these devices, identifying whether a particular LED has failed is important because it allows for quick maintenance.

Existing large-scale devices using LEDs are checked for problems by user notification, periodic site visits, or camera imaging to check them, but this can take a long time. This can also waste time and effort in locating fault LEDs.

In addition, current or power consumption by a failed LED is generally lower than that of an LED performing normal operation. Therefore, in order to detect a failed LED, it is possible by detecting the consumption current or power of each LED. Therefore, it is possible to detect fault LED accurately by connecting fault detection circuit to every LED, but it is necessary to arrange a very large number of fault detection circuits. It becomes inefficient.

Therefore, there is a need for an apparatus capable of detecting a faulty LED at an efficient and low cost and a method of providing the same.

Accordingly, the technical problem to be achieved by the present invention is to detect the change in the power supply of the driving chip connected to the fault LED, to accurately identify the fault LED or the LED set including the fault LED at a low cost, so that rapid fault diagnosis and maintenance is possible. It is to provide a possible device and method.

In addition, the fault LED or the LED set including the fault LED can be identified through the remote, so that quick maintenance can be achieved, and the relevant fault information can be collected at the site inspection to facilitate accurate positioning of the fault LED. It is to provide an apparatus and method.

An LED device for efficient failure detection for achieving the technical problem is a plurality of light emitting diodes (LED), a driving device for driving the plurality of LEDs, and turned on by the driving device of the plurality of LEDs ( and a detector for detecting a driver current which is a current flowing in at least one LED turned on or a voltage applied to a predetermined resistance by the driver current.

The LED device for efficient fault detection further includes a processor for outputting a control signal for selectively driving the plurality of LEDs to the driving device, wherein the processor is configured to output the driving device current or the voltage detected from the detection unit. It may be determined whether there is a failed LED among the plurality of LEDs by comparing with a reference value.

When the processor determines that there is a faulty LED among the plurality of LEDs, the processor outputs the control signal for selectively turning on any one of the plurality of LEDs to the driving device, and detects the detected signal by the detection unit. The faulty fault LED of the plurality of LEDs may be determined by checking a driving current or the voltage.

The detector may be implemented as an analog to digital converter (ADC) or a comparator.

The LED device for efficient fault detection may transmit at least one of information about the drive device or the fault LED to a control system through a predetermined network.

An LED device for efficient failure detection for solving the technical problem is a first driving device for driving each of the first LED set and the second LED set, the first LED set and the second LED set comprising a plurality of LEDs; A first drive current and a second drive current or a second drive current that is a current flowing in a second drive and at least one LED turned on by each of the first drive and the second drive; And a first detector and a second detector for detecting a first voltage and a second voltage applied to each of the predetermined first and second resistors by the first driver current and the second driver current, respectively.

The LED device for efficient fault detection may include first and second control signals for selectively driving LEDs included in each of the first and second LED sets, respectively, by the first and second driving devices. And a processor capable of outputting a control signal, wherein the processor includes the first driver current or the first voltage and the second driver current or the first detector detected from each of the first and second detectors. The two voltages may be compared with a reference value to determine whether there is an LED in which at least one of the first LED set or the second LED set is broken.

If the processor determines that there is a faulty LED in the first LED set, the processor outputs the control signal for selectively turning on any one of the LEDs included in the first LED set to the first driving device, The failing fault LED among the LEDs included in the first LED set may be determined by checking the first driver current or the first voltage detected by the first detector.

The LED device for efficient fault detection may transmit at least one of information on the first driving device or information on the fault LED to a control system through a predetermined network.

An LED device for efficient failure detection for solving the technical problem is a first driving device for driving each of the first LED set and the second LED set, the first LED set and the second LED set comprising a plurality of LEDs; A total current which is a current flowing through a second driving device and at least one LED turned on by the first driving device and the second driving device or a total voltage applied to a predetermined resistance by the total current; It includes a detection unit for detecting the.

The LED device for efficient fault detection may include first and second control signals for selectively driving LEDs included in each of the first and second LED sets, respectively, by the first and second driving devices. And a processor capable of outputting a control signal, wherein the processor compares the total current or the total voltage detected by the detection unit with a reference value to determine whether there is a failed LED among the first and second LED sets. You can judge.

When the processor determines that a failed LED exists in the first LED set and the second LED set, the processor sequentially transmits the first control signal and the second control signal to a corresponding driving device, and transmits the first control signal. The LED set including the failed LED or the driving device corresponding to the LED set may be determined based on the total current or the total voltage detected according to each of the control signal and the second control signal.

The processor outputs a control signal for selectively turning on any one of the LEDs included in the LED set to the driving device, and checks the total current or the total voltage detected by the detection unit and includes the control signal in the LED set. It is possible to determine the faulty fault LED among the LEDs.

The LED device providing method for efficient failure detection for solving the technical problem is to detect each of the at least one drive device current output from each of the at least one drive device, and each of the detected at least one drive device current to a predetermined reference value And determining a driving device corresponding to the fault LED among the at least one driving device based on the comparing result and the comparison result.

The method for providing an LED device for efficient failure detection may include selectively turning on LEDs driven by a driving device corresponding to the determined failure LED and outputting from the driving device corresponding to the failure LED in response to the turning on. The method may further include detecting a second driver current and detecting the faulty LED based on the detected second driver current.

The method for providing an LED device for efficient failure detection may further include transmitting at least one of information on a driving device corresponding to the determined failure LED or information on the failure LED to a control system through a predetermined network. Can be.

The LED device providing method for efficient failure detection for solving the technical problem is to detect the total current which is the sum of the at least one drive current output from each of the at least one drive device, and the detected total current and the predetermined reference value And determining whether there is a failure LED among the plurality of LEDs driven by the at least one driving device based on the comparing step and the comparison result.

LED device for efficient failure detection and a method of providing the same according to the present invention by detecting a change in the power supply of the driving device (driving chip) connected to the failure LED, while consuming less circuit or hardware costs for failure detection LED Accurate identification of LED sets that contain fault LEDs enables rapid fault diagnosis and maintenance.

In addition, the fault LED or the LED set including the fault LED can be identified through the remote to facilitate rapid maintenance, and to easily identify whether the fault LED has occurred without the high cost of on-site inspection or CCTV. It can be effective.

BRIEF DESCRIPTION OF THE DRAWINGS In order to better understand the drawings cited in the detailed description of the invention, a brief description of each drawing is provided.
1 is a view showing an example of an LED device for efficient failure detection according to an embodiment of the present invention.
2 is a view showing an example of an LED device for efficient failure detection according to another embodiment of the present invention.
3 is a view showing an example of an LED device for efficient failure detection according to another embodiment of the present invention.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Also, in this specification, when any one element 'transmits' data to another element, the element may transmit the data directly to the other element, or may be transmitted through at least one other element And may transmit the data to the other component.

Conversely, when one element 'directly transmits' data to another element, it means that the data is transmitted to the other element without passing through another element in the element.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

1 is a view showing an example of an LED device for efficient failure detection according to an embodiment of the present invention.

Referring to FIG. 1, the LED device 100 for efficient failure detection according to an embodiment of the present invention includes a plurality of LEDs 20-1 to 20-8 and the plurality of LEDs 20-1 to 20-2. 8) a driving device (or LED driver) 10 for driving the detector, and a detector 30. The LED device 100 for efficient failure detection includes a plurality of LED side resistors 70-1 to 70-8, a node 11 for outputting current flowing through the driving device 10, that is, driving device current. One end may further include a test resistor (Rtest) 60 connected to one end and grounded. In addition, the LED device 100 for efficient failure detection is a processor capable of outputting a control signal for selectively driving each of the plurality of LEDs (20-1 ~ 20-8) to the drive device (10) It may further include (50).

1 illustrates an example in which eight LEDs 20-1 through 20-8 are driven through the driving device 10, but the scope of the present invention is not limited thereto.

Each of the plurality of LEDs 20-1 through 20-8 emits light of a predetermined color when power is supplied. Each of the plurality of LEDs 20-1 to 20-8 has an anode connected to a power supply voltage Vcc, and a predetermined LED side resistance 70-1 to 70-is connected between the power supply voltage and the one end. 8) can be connected in series. The other end of each of the plurality of LEDs 20-1 to 20-8 may be connected to the driving device 10, respectively.

The driving device 10 may be connected to each of the plurality of LEDs 20-1 to 20-8 and provide a driving current to each of the plurality of LEDs 20-1 to 20-8. To this end, the driving device 10 may include the plurality of buffers or a transistor transistor logic (TTL). The driving device 10 may include control stages out0 to out7 for turning on or turning off each of the plurality of LEDs 20-1 to 20-8. have. The control terminals out0 to out7 may be connected to a control input terminal through the buffer or TTL. For example, when a predetermined logic level (eg, '0') is applied to the first control terminal out0, the LED0 20-1 corresponding to the first control terminal out0 may be turned on. . Then, the current flowing through the LED0 (20-1) is supplied from the power supply voltage (Vcc) through the first LED side resistor (R0, 70-1), LED0 (20-1), the output node (11) It can flow to the test resistance (Rtest, 60). As such, the current flowing through each of the LEDs turned on by the driver 10 is combined at the output node 11, which may be referred to as a driver current. Then, the driver current is proportional to the number of LEDs turned on by the driver 10. For example, when any one of the plurality of LEDs 20-1 to 20-8 is turned on, if the amount of current flowing in the turned on LED is 20 mA, two LEDs are turned on by the driving device 10. When on, the amount of drive current can be (substantially) 40 mA. If all of the LEDs 20-1 through 20-8 driven by the driver 10 are turned on, the driver current may be (substantially) 160 mA.

Therefore, when sensing the LED turned on by the driver 10 and the driving device current (or the voltage applied to the test resistor 60) flowing to the test resistor 60, at least one of the turned on LEDs is detected. You can check if it is broken. For example, when all the LEDs 20-1 to 20-8 connected to the driving device 10 are turned on and the driving device current (or voltage) is detected at this time, the stored reference value (eg, 160 mA) and When comparing the detected current (or voltage) by a predetermined value or more, it can be seen that any one of the LEDs 20-1 through 20-8 connected to the driving device 10 has failed.

If the first LED 20-1 and the second LED 20-2 are turned on by the driving device 10, and the driving device current (voltage) is detected at this time, the first LED 20-1 is turned on. At least one of the and second LED 20-2 may be checked whether a failure has occurred.

The processor 50 may selectively drive the plurality of LEDs 20-1 through 20-8 by outputting a predetermined control signal to the control terminals out0 through out7 to the driving device 10. . In addition, the processor 50 receives information on the drive current (or voltage) detected from the detector 30, compares the received information with a pre-stored reference value, and at least one of the currently driven LEDs fails. Can determine whether or not. The reference value may be different depending on the number of LEDs driven, and may be stored in the processor 50 in advance. In some embodiments, the number of LEDs driven may be the reference value.

The detector 30 may detect the driver current (or voltage). When the detector 30 is implemented as an analog to digital converter (ADC), the detector 30 may output a digital value corresponding to the detected drive current (or voltage) to the processor 50. . The digital value may be compared with a predetermined reference value by the processor 50 to determine whether there is a failed LED among the LEDs driven.

In addition, according to an embodiment, the detector 30 may be implemented as a comparator (not shown) in which one output terminal is connected to the output node 11 and a predetermined reference current (voltage) is provided to another input terminal. . Then, when the output value of the comparator (not shown) is greater than or equal to a predetermined value, it may be known that a failed LED exists among the driven LEDs. In this case, since the reference current (voltage) may be fixed, the number of LEDs driven to be compared with the reference current (voltage) may be fixed.

On the other hand, when it is determined that there is a failed LED among the LEDs driven in the driving device 10, the processor 50 may provide a control signal for selectively turning on any one of the currently driven LEDs. You can output it to (10). At this time, the faulty fault LED among the plurality of LEDs is determined by checking the drive current or voltage detected by the detector 30 and comparing it with a reference value (that is, current or voltage flowing through one normal LED). You can also judge what it is.

For example, when the processor 50 controls the driving device 10 to drive all of the plurality of LEDs 20-1-20-8, the plurality of LEDs 20-1-20-8. At least one of) may be determined to be a fault LED. Then, the processor 50 sequentially turns on the first LEDs 20-1 to the eighth LEDs 20-8 one by one and checks the driving device current (or voltage) at that time, thereby actually causing any LED to fail. You can also determine if it is an LED.

As a result, the LED device 100 for the efficient failure detection is the driving device 10 when at least one of the plurality of LEDs 20-1 to 20-8 connected to the driving device 10 is a failure LED. ) Information (eg, serial number or identification information of the driving device) and / or information about the failure LED (identification information of the failure LED) may be transmitted to the predetermined control system 200. The control system 200 may be a predetermined system operated by the subject managing and operating the LED device 100 for efficient failure detection for the LED device 100 for efficient failure detection. The control system 200 may be connected to the LED device 100 for efficient failure detection through a predetermined network, and the control system 200 and the predetermined device may be connected to the LED device 100 for efficient failure detection. It may further include a network device for connecting via a network. Therefore, when using the LED device 100 for efficient failure detection according to an embodiment of the present invention, the site visits periodically, the image for checking whether the plurality of LEDs 20-1 ~ 20-8 light emission It is possible to quickly and efficiently check for a failure at a remote location without having to acquire an acquisition device (eg, CCTV).

2 is a view showing an example of an LED device for efficient failure detection according to another embodiment of the present invention.

2, the LED device 100-1 for efficient failure detection according to an embodiment of the present invention includes a plurality of (m × n) LEDs. The plurality of LEDs includes a plurality of (n) LED sets including a plurality of (m) LEDs, the plurality of LED sets including a first LED set 21 and a second LED set 22. Can be. 2 illustrates an example in which LEDs (eg, 21-1 to 21-m and 22-1 to 22-m) included in respective LED sets (eg, 21 and 22) are included in one row. However, the LEDs (eg, 21-1 to 21-m and 22-1 to 22-m) included in each of the LED sets (eg, 21 and 22) may be included in one column, and may be in a predetermined form. (E.g., rectangular).

Each LED set (eg, 21, 22) may correspond to a plurality (n) of drive units 10-1 to 10-n. For example, the LED set 21 can be driven by the drive 10-1, and the LED set 22 can be driven by the drive 10-n.

The current flowing in at least one LED turned on by each of the drives 10-1 through 10-n, i.e., the drive current can flow to ground through the plurality of test resistors 60-1 through 60-n. have. A detector 30 is provided at an output node formed between each of the driving devices 10-1 to 10-n and each of the test resistors 60-1 to 60-n to detect each driving current (or voltage). -1 to 30-n) may be connected. The driver current (or voltage) detected by each of the detectors 30-1 to 30-n may be output to the processor 50. The processor 50 may output a control signal for driving all or some of the LEDs driven by each of the driving devices 10-1 to 10-n to the respective driving devices 10-1 to 10-n. Can be.

For example, the processor 50 may output a control signal for driving all of the first LED sets 21, which may be driven by the first driver 10-1, to the first driver 10-1. Can be. In this case, a value corresponding to the current (or voltage) of the first driving device by the first driving device 10-1 may be received through the first detecting unit 30-1. Then, the processor 50 may fail in the first LED set 21 by comparing the corresponding reference value with the value received through the first detector 30-1 when all of the first LED sets 21 are driven. It can be determined whether the LED is present. If it is determined that a fault LED exists in the first LED set 21, the processor 50 may store identification information of the first driving device 10-1. In addition, the processor 50 outputs a predetermined control signal to the first driving device 10-1 so as to sequentially turn on any one of the LEDs included in the first LED set 21, and the first time at that time. It is possible to determine whether the LED currently turned on is a fault LED by comparing the drive current (or voltage) and a reference value corresponding to one LED. Identification information regarding the LED determined to be a fault LED may be stored in the processor 50. The stored identification information on the fault LED or information on the driving device 10-1 corresponding to the fault LED may be transmitted to a predetermined control system 200.

When such a process is performed for each of the driving devices 10-1 to 10-n, information on the failing LED and / or the driving device corresponding to the failing LED can be efficiently determined. In addition, as can be seen in Figure 2, according to the LED device 100-1 for efficient failure detection according to an embodiment of the present invention, predetermined for failure detection for each of the total LED (m × n) It is not necessary to include a circuit (for example, a detector), and the circuit (for example, a detector) can be provided only by the number (n) of driving devices, thereby reducing the cost.

In addition, the processor 50 is the total LED driven by the entire drive (10-1 ~ 10-n) before checking whether there is a fault LED for each drive (10-1 ~ 10-n) After transmitting control signals to each of the driving devices 10-1 to 10-n so as to drive all of them, the total current (or voltage) at that time is compared with a reference value when driving all the LEDs. You can also determine if the LED exists first. Thereafter, if it is determined that a fault LED exists among all the LEDs, it may be determined whether a fault LED exists for each of the driving devices 10-1 to 10-n.

In addition, according to another embodiment of the present invention, a process for determining what the fault LED of each LED set may not be performed. For example, the LED device 100-1 for efficient failure detection may determine only information on a driving device for driving the LED set in which the fault LED exists or the LED set in which the fault LED exists among the respective LED sets. That is, even if only the information on the LED set or the corresponding driving device in which the fault LED is present, it is possible to quickly determine which LED among the LEDs included in the LED set is faulty with the naked eye.

3 is a view showing an example of an LED device for efficient failure detection according to another embodiment of the present invention.

Referring to FIG. 3, the LED device 100-2 for efficient failure detection according to an embodiment of the present invention includes a plurality of (m × n) LEDs. The plurality of LEDs includes a plurality of (n) LED sets including a plurality of (m) LEDs, the plurality of LED sets including a first LED set 23 and a second LED set 24. Can be.

Each LED set (eg, 23, 24) may correspond to a plurality (n) of drive units 10-1 to 10-n. For example, the first LED set 23 may be driven by the driving device 10-1, and the second LED set 24 may be driven by the driving device 10-n.

A current flowing in at least one LED turned on by each of the drivers 10-1 through 10-n, that is, each of the driver currents may flow to the ground through the test resistor 60. To this end, the respective driving devices 10-1 to 10-n may be commonly connected to the output node 11-2. That is, in FIG. 3, only one predetermined circuit (eg, the detection unit 30) for detecting a failure of a plurality of m × n LEDs may be provided. The detector 30 may be connected to the output side node 11-2. A value corresponding to the total current (or voltage) of all of the driving devices 10-1 to 10-n detected by the detector 30 may be output to the processor 50. The processor 50 may output a control signal for driving all or some of the LEDs driven by each of the driving devices 10-1 to 10-n to the respective driving devices 10-1 to 10-n. Can be.

For example, the processor 50 may output a control signal for driving all of the first LED sets 21, which may be driven by the first driver 10-1, to the first driver 10-1. Can be. In this case, a value corresponding to the current (or voltage) of the first driving device by the first driving device 10-1 may be received through the detection unit 30. Then, the processor 50 compares the corresponding reference value with the value received through the detector 30 when all of the first LED set 23 is driven to determine whether there is a fault LED in the first LED set 23. You can judge. If it is determined that a fault LED exists in the first LED set 23, the processor 50 may store identification information of the first driving device 10-1. In addition, the processor 50 outputs a predetermined control signal to the first driving device 10-1 so as to sequentially turn on any one of the LEDs included in the first LED set 23. It is possible to determine whether the LED currently turned on is a fault LED by comparing the current value (or voltage) and the reference value corresponding to one LED. Identification information regarding the LED determined to be a fault LED may be stored in the processor 50. The stored identification information on the fault LED or information on the driving device 10-1 corresponding to the fault LED may be transmitted to a predetermined control system 200.

When such a process is performed for each of the driving devices 10-1 to 10-n, information on the failing LED and / or the driving device corresponding to the failing LED can be efficiently determined. In addition, as can be seen in Figure 3, according to the LED device 100-1 for efficient failure detection according to an embodiment of the present invention, predetermined for failure detection for each of the total LED (m × n) It is not necessary to include a circuit (for example, a detector), and one circuit (for example, a detector) can be provided, thereby reducing the cost.

In addition, the processor 50 is the total LED driven by the entire drive (10-1 ~ 10-n) before checking whether there is a fault LED for each drive (10-1 ~ 10-n) After transmitting control signals to each of the driving devices 10-1 to 10-n so as to drive all of them, the total current (or voltage) at that time is compared with a reference value when driving all the LEDs. You can also determine if the LED exists first. Thereafter, if it is determined that a fault LED exists among all the LEDs, it may be determined whether a fault LED exists for each of the driving devices 10-1 to 10-n.

The LED device for efficient failure detection according to an embodiment of the present invention may be implemented by various devices including a plurality of LEDs, such as an electronic board and an illumination device.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (17)

A plurality of light emitting diodes (LEDs);
A driving device for driving the plurality of LEDs; And
A detection unit for detecting a voltage applied to a predetermined resistance by the driving device current or the driving device current which is a current flowing in at least one LED turned on by the driving device among the plurality of LEDs; LED device for efficient fault detection.
According to claim 1, The LED device for efficient failure detection,
And a processor configured to output a control signal for selectively driving the plurality of LEDs to the driving device.
And the processor is configured to determine whether there is a failed LED among the plurality of LEDs by comparing the driving device current or the voltage detected by the detection unit with a reference value.
The method of claim 2, wherein the processor,
If it is determined that there is a failed LED among the plurality of LEDs,
A fault that has failed among the plurality of LEDs by outputting the control signal for selectively turning on any one of the plurality of LEDs to the driving device, and checking the driving device current or the voltage detected by the detecting unit. LED device for efficient fault detection to judge LEDs.
The method of claim 2, wherein the detection unit,
LED device for efficient fault detection implemented as an analog to digital converter (ADC) or comparator
According to claim 3, The LED device for efficient failure detection,
Efficient failure detection LED device for transmitting at least one of the information about the drive device or the failure LED to a control system through a predetermined network.
A first LED set and a second LED set comprising a plurality of LEDs;
A first driver and a second driver for driving each of the first and second LED sets; And
A first driver current and a second driver current or the first driver current and the current flowing in at least one LED turned on by each of the first driver and the second driver; An LED device for efficient fault detection comprising a first detector and a second detector for detecting a first voltage and a second voltage applied to each of a predetermined first and second resistors by the second driver current, respectively.
According to claim 6, The LED device for efficient failure detection,
A processor capable of outputting a first control signal and a second control signal for selectively driving the LEDs included in each of the first LED set and the second LED set to the first driving device and the second driving device, respectively; More,
The processor may compare the first driver current or the first voltage and the second driver current or the second voltage detected by each of the first and second detectors with a reference value to set the first LED or LED device for efficient failure detection to determine whether at least one of the second LED set is a failure LED.
The method of claim 7, wherein the processor,
If it is determined that there is a failed LED in the first LED set,
Outputting the control signal for selectively turning on any one of the LEDs included in the first LED set to the first driving device, the first driving device current or the first detected by the first detecting unit; 1 LED device for efficient fault detection by checking the voltage to determine the faulty fault LED among the LEDs included in the first LED set.
The method of claim 8, wherein the LED device for efficient failure detection,
LED device for efficient failure detection for transmitting at least one of the information on the first drive device or the information on the failure LED to the control system through a predetermined network.
A first LED set and a second LED set comprising a plurality of LEDs;
A first driver and a second driver for driving each of the first and second LED sets; And
A detector for detecting a total current which is a current flowing in at least one LED turned on by the first driving device and the second driving device or a total voltage applied to a predetermined resistance by the total current LED device for efficient fault detection, including.
The method of claim 10, wherein the LED device for efficient failure detection,
A processor capable of outputting a first control signal and a second control signal for selectively driving the LEDs included in each of the first LED set and the second LED set to the first driving device and the second driving device, respectively; More,
And the processor is configured to determine whether there is a failed LED among the first LED set and the second LED set by comparing the total current or the total voltage detected by the detector with a reference value.
The method of claim 11, wherein the processor,
If it is determined that a failed LED exists in the first LED set and the second LED set,
Sequentially transmitting the first control signal and the second control signal to a corresponding driving device;
Efficient failure detection for determining an LED set including the failed LED or a driving device corresponding to the LED set based on the total current or the total voltage detected according to each of the first control signal and the second control signal transmitted. LED device for.
The method of claim 12, wherein the processor,
LEDs included in the LED set by outputting a control signal for selectively turning on any one of the LEDs included in the LED set to the driving device, and checking the total current or the total voltage detected by the detector. LED device for efficient fault detection to determine faulty LEDs.
Detecting each of at least one drive current output from each of the at least one drive, and comparing each of the detected at least one drive currents with a predetermined reference value;
And determining a driver corresponding to the fault LED among the at least one driver based on a comparison result.
The method according to claim 14, wherein the LED device for efficient failure detection,
Selectively turning on LEDs driven by a driving device corresponding to the determined fault LED; And
Detecting a second driver current output from a driver corresponding to the fault LED in response to a turn on, and detecting the fault LED based on the detected second driver current. Method for providing LED device for.
The method of claim 15, wherein the LED device for efficient failure detection,
And transmitting at least one of information on a driving device corresponding to the determined fault LED or information on the fault LED to a control system through a predetermined network.
Detecting a total current that is a sum of at least one drive current output from each of the at least one drive, and comparing the detected total current with a predetermined reference value; And
And determining whether a fault LED exists among a plurality of LEDs driven by the at least one driving device based on a comparison result.

Images