KR102688565B1 - The LED System Performing Automatic Table Setting of Dimming - Google Patents

Abstract

The present invention is an LED system that performs automatic table setting according to dimming. It automatically determines the suitability of LEDs and automatically sets the adjustment table for LEDs that require adjustment to adjust the output of the LEDs, depending on the manufacturer of the LEDs. Characteristics of different voltage frequencies or current frequencies; and differences in passive elements used in SMPS; about an LED system that performs automatic table setting according to dimming, which can minimize defects and extend the life of LEDs by reducing output errors of LEDs caused by will be.

Description

LED system performing automatic table setting according to dimming {The LED System Performing Automatic Table Setting of Dimming}

The present invention is an LED system that performs automatic table setting according to dimming. It automatically determines the suitability of LEDs and automatically sets the adjustment table for LEDs that require adjustment to adjust the output of the LEDs, depending on the manufacturer of the LEDs. Characteristics of different voltage frequencies or current frequencies; and differences in passive elements used in SMPS; about an LED system that performs automatic table setting according to dimming, which can minimize defects and extend the life of LEDs by reducing output errors of LEDs caused by will be.

As the modern residential environment develops, indoor lighting is changing from white lighting such as existing fluorescent lamps or halogen lamps to advanced interior lighting that can express various indoor lighting colors, that is, color temperature. In particular, efforts are being made to apply lighting devices using light emitting diodes (LEDs) as the light source as the most representative lighting devices for advanced interior lighting.

Accordingly, conventional technologies for varying the color temperature include warm-LED that emits warm white and cool LED, such as Korea Patent No. 10-1121059 and Korea Patent No. 10-1567535. There is a device that controls color temperature by simultaneously using Cool-LED that emits Cool White.

On the other hand, as in Patent Documents 1 and 2 above, in the case of LED control devices, the company that manufactures the LED elements and the company that manufactures the device that controls the LED are often different, and in this case, the voltage frequency or The characteristics of the current frequency are different for each manufacturer, and the brightness or color temperature of the final output LED light may be different from the input control value of the LED control device due to differences in the device that controls the LED or the passive elements used in the SMPS of the LED. There are many cases. In addition, due to the difference between the input control value and the actual output power, there is a problem that the LED, the power supply unit of the LED, or the control unit of the LED fails frequently or the lifespan is shortened.

In order to solve this problem, it is possible to determine whether the difference between the input control value and actual output power is within the normal range; If the actual output voltage is output higher than the input control value, defective LEDs can be inspected at an early stage by creating an internal adjustment table and adjusting the output voltage; By reducing the difference between the input control value and the actual output power, the failure rate of the LED device can be reduced; Unnecessary power consumption can be minimized by adjusting the output power of LEDs that output power higher than the normal range to the normal range; There is a need for an LED system.

Republic of Korea Patent No. 10-1121059 (2012.02.21.) Republic of Korea Patent No. 10-1567535 (2015.11.03.)

The present invention is an LED system that performs automatic table setting according to dimming. It automatically determines the suitability of LEDs and automatically sets the adjustment table for LEDs that require adjustment to adjust the output of the LEDs, depending on the manufacturer of the LEDs. Characteristics of different voltage frequencies or current frequencies; We provide an LED system that automatically sets the table according to dimming, which minimizes defects and extends the lifespan of LEDs by reducing the output error of LEDs caused by differences in passive elements used in SMPS. The purpose is to

In order to solve the above problems, an embodiment of the present invention is an LED system that performs automatic table setting according to dimming, and one or more cool LEDs that emit cool white color are connected in series to create a cool LED. A cool LED unit forming a detailed module and configured with the one or more cool LED detailed modules in parallel; A warm LED unit is formed by connecting one or more warm LEDs emitting warm white color in series to form a warm LED detail module, and the one or more warm LED detail modules are configured in parallel; A first A/D conversion module that converts AC power and DC power; A cool LED driver that receives power output from the first A/D conversion module and controls the cool LED unit; and a warm LED driver that receives power output from the first A/D conversion module and controls the warm LED unit. A power inlet unit where AC power is supplied from the outside; and a current sensor that senses AC power supplied to the power input unit; A second A/D conversion module that converts some of the AC power input into the power input unit into driving power; A communication unit capable of performing wired or wireless communication to receive a lighting control signal from outside the LED system; A relay switch that transfers the AC power supplied to the power input unit to the first A/D conversion module of the SMPS unit; and an MCU unit for controlling the LED system; a control unit including a control panel connected to the communication unit and capable of receiving the lighting control signal from outside the LED system by wire; And a wireless communication unit capable of wirelessly receiving the lighting control signal from the outside of the LED system. It provides an LED system that performs automatic table setting according to dimming, further comprising a.

In one embodiment of the present invention, the MCU unit includes an LED status determination step of determining whether the cool LED unit and the warm LED unit are eligible; A dimming adjustment step of generating an adjustment table for a dimming value according to the adjusted PWM value for the cool LED unit or the warm LED unit determined to require table adjustment in the LED status determination step; and the lighting control signal; and an LED control step of generating an adjusted output control signal based on a reference dimming table or the adjustment table and transmitting the adjusted output control signal to the cool LED driver and the warm LED driver.

In one embodiment of the present invention, the LED status determination step includes a maximum output command step in which the MCU unit transmits a control signal to output a maximum PWM to each of the cool LED driver and the warm LED driver; A maximum output control step in which each of the cool LED driver and the warm LED driver controls the cool LED unit and the warm LED unit to achieve maximum output according to the control signal, respectively; And a maximum output comparison step of comparing the maximum power sensed by the current sensor in the maximum output control step with the reference maximum power previously stored in the MCU unit, wherein the maximum power is the power input in the maximum output control step. It corresponds to the AC power input through the unit, and in the maximum output comparison step, if the maximum power is within the normal range of the reference maximum power, the corresponding LED part is determined as a normal LED, and the maximum power is within the normal range of the reference maximum power. If it is not included in the normal range and the maximum power exceeds the reference maximum power, the corresponding LED is determined as an adjustment-needs LED that requires table adjustment, and the maximum power is not included in the normal range of the reference maximum power, and the If the maximum power is less than the standard maximum power, the corresponding LED unit can be determined as an unqualified LED.

In one embodiment of the present invention, the MCU unit performs the dimming control step for the LED unit determined as the adjustment-needing LED in the LED status determination step, and the dimming control step is performed by controlling the PWM preset in the MCU unit. A dimming table generating step of generating a dimming table for dimming values according to the value; A dimming table comparison step of comparing the dimming table and a reference dimming table previously stored in the MCU unit; and an adjustment table generating step of generating an adjustment table for a dimming value according to the adjusted PWM value based on the results of the dimming table comparison step.

In one embodiment of the present invention, the LED control step includes a lighting control signal receiving step of receiving the lighting control signal including brightness information and color temperature information of lighting from the communication unit; An expected output calculation step of calculating expected output from the cool LED driver and the warm LED driver based on the lighting control signal; An adjustment output calculation step of calculating adjusted outputs of the cool LED driver and the warm LED driver based on the performance result of the expected output calculation step and the adjustment table; And transmitting an adjustment output control signal for the adjustment output to the cool LED driver and the warm LED driver, wherein each of the cool LED driver and the warm LED driver controls the adjustment output control signal based on the adjustment output control signal. The cool LED unit and the warm LED unit can be controlled respectively with the adjustment output.

In one embodiment of the present invention, the LED control step includes, after the lighting control signal receiving step, determining whether the cool LED unit or the warm LED unit corresponding to the lighting control signal is the adjustment-needing LED; If the cool LED unit or the warm LED unit corresponds to the adjustment-required LED, calculating the adjustment output based on an adjustment table corresponding to the cool LED unit or the warm LED unit in the adjustment output calculation step; and when the cool LED unit or the warm LED unit corresponds to the normal LED, calculating the adjusted output based on the reference dimming table corresponding to the cool LED unit or the warm LED unit in the adjusted output calculation step. It may further include ;.

According to one embodiment of the present invention, defective LEDs can be automatically identified at the beginning of smart LED product production, which has the effect of increasing product productivity.

According to one embodiment of the present invention, by using an LED unit composed of one or more LED detail modules in which a plurality of LEDs are connected in series in parallel, the brightness and color temperature of lighting can be controlled in various ways.

According to one embodiment of the present invention, by using an LED unit composed of one or more LED detail modules in parallel, maintenance is easy when a specific LED is defectively produced or broken, which has the effect of reducing maintenance costs. It can be performed.

According to one embodiment of the present invention, when the actual output voltage is output higher than the input control value, the difference between the input control value and the actual output power is reduced by automatically creating an adjustment table to adjust the output voltage, thereby reducing the product It can have the effect of reducing the failure rate and extending the lifespan of the product.

According to one embodiment of the present invention, the output power of an LED that outputs power higher than the normal range is adjusted to the normal range based on an automatically generated adjustment table, thereby achieving the effect of minimizing unnecessary power consumption. .

Figure 1 schematically shows the configuration of an LED system according to an embodiment of the present invention.
Figure 2 schematically shows the configuration of a cool LED unit, a warm LED unit, a cool LED driver, and a warm LED driver according to some embodiments of the present invention.
Figure 3 schematically shows the steps of controlling the LED unit by the MCU unit and the configuration of the MCU unit according to an embodiment of the present invention.
Figure 4 schematically shows the performance of the LED status determination step performed in the MCU unit according to an embodiment of the present invention.
Figure 5 schematically shows the process of dimming adjustment step according to an embodiment of the present invention.
Figure 6 schematically shows a control panel that generates a lighting control signal according to an embodiment of the present invention.
Figure 7 schematically shows lighting control signals according to some embodiments of the present invention.
Figure 8 schematically shows the performance steps of the LED control step performed in the MCU unit according to an embodiment of the present invention.
9 to 11 schematically show the process of controlling the LED unit through the LED control step according to some embodiments of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS Various embodiments and/or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth to facilitate a general understanding of one or more aspects. However, it will also be appreciated by those skilled in the art that this aspect(s) may be practiced without these specific details. The following description and accompanying drawings set forth in detail certain example aspects of one or more aspects. However, these aspects are illustrative and some of the various methods in the principles of the various aspects may be utilized, and the written description is intended to encompass all such aspects and their equivalents.

Additionally, various aspects and features may be presented by a system that may include multiple devices, components and/or modules, etc. It is also understood that various systems may include additional devices, components and/or modules, etc. and/or may not include all of the devices, components, modules, etc. discussed in connection with the drawings. It must be understood and recognized.

As used herein, “embodiments,” “examples,” “aspects,” “examples,” etc. may not be construed to mean that any aspect or design described is better or advantageous over other aspects or designs. . The terms '~part', 'component', 'module', 'system', 'interface', etc. used below generally refer to computer-related entities, such as hardware, hardware, etc. A combination of and software, it can mean software.

Additionally, the terms “comprise” and/or “comprising” mean that the feature and/or element is present, but exclude the presence or addition of one or more other features, elements and/or groups thereof. It should be understood as not doing so.

Additionally, terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are generally understood by those skilled in the art to which the present invention pertains. It has the same meaning as Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the embodiments of the present invention, have an ideal or excessively formal meaning. It is not interpreted as

Figure 1 schematically shows the configuration of an LED system 10000 according to an embodiment of the present invention.

As shown in Figure 1, as an LED system (10000) that performs automatic table setting according to dimming, one or more cool LEDs that emit cool white color are connected in series to form a cool LED detail module. , a cool LED unit (1100) configured with one or more cool LED detail modules in parallel; A warm LED unit (1200) formed by connecting one or more warm LEDs emitting warm white color in series to form a warm LED detail module, and comprising the one or more warm LED detail modules in parallel; A first A/D conversion module (2300) that converts AC power and DC power; A cool LED driver 2100 that receives power output from the first A/D conversion module 2300 and controls the cool LED unit 1100; and a warm LED driver 2200 that receives power output from the first A/D conversion module 2300 and controls the warm LED unit 1200. A SMPS unit 2000 including a; A power inlet unit (3000) where AC power from the outside is supplied; and a current sensor 4100 that senses the AC power supplied to the power inlet 3000; A second A/D conversion module (4200) that converts some of the AC power input into the power input unit (3000) into driving power; A communication unit 4300 capable of performing wired or wireless communication to receive a lighting control signal from outside the LED system 10000; A relay switch 4400 that transfers the AC power supplied to the power input unit 3000 to the first A/D conversion module 2300 of the SMPS unit 2000; and a control unit 4000 including an MCU unit 4500 that controls the LED system 10000, and is connected to the communication unit 4300 to receive the lighting control signal from the outside of the LED system 10000. A control panel (5000) capable of receiving by wire; and a wireless communication unit 5100 capable of wirelessly receiving the lighting control signal from outside the LED system 10000.

Specifically, in the LED system 10000 shown in FIG. 1, the arrow indicated by a solid line means that a signal containing information such as control or command moves, and the arrow indicated by a dotted line indicates the outside of the LED system 10000. This means that the power drawn from is distributed and delivered to each component of the LED system (10000).

The LED unit 1000 of the LED system 10000 includes a cool-LED unit 1100 and a warm-LED unit 1200, and the SMPS (Switched Mode Power Supply) unit ( 2000), as an embodiment of the present invention, it is possible to receive a control signal, and as another embodiment of the present invention, it is possible to receive driving power together with the control signal to emit light. The cool LED unit 1100 has two or more cool LED detail modules connected in parallel, and each of the two or more cool LED detail modules has a plurality of cool LEDs connected in series. The cool LED, preferably, can emit cool white color light of 6000K or more. And the warm LED unit 1200 has a configuration in which two or more warm LED detailed modules are connected in parallel, and the two or more warm LED detailed modules each have a plurality of warm LEDs connected in series. The warm LED can preferably emit light of warm white color of 3000K or less. A detailed description of the LED unit 1000 will be described later with reference to FIG. 2.

The SMPS unit 2000 includes the cool LED driver 2100, the warm LED driver 2200, and the first A/D conversion module 2300, and in addition, passive elements and /Or it may further include active elements.

The first A/D conversion module 2300 receives AC power input from the outside of the LED system 10000 through the current sensor 4100 and the relay switch 4400, and converts the AC power into DC power. By converting, driving power can be transmitted to each component of the SMPS unit 2000.

The cool LED driver 2100 and the warm LED driver 2200 receive driving power from the first A/D conversion module 2300 and operate the cool LED based on the control signal transmitted from the MCU unit 4500. The LED driver 2100 controls the cool LED unit 1100, and the warm LED driver 2200 controls the warm LED unit 1200.

According to one embodiment of the present invention, the cool LED driver 2100 and the warm LED driver 2200 may include one or more active elements for controlling the cool LED unit 1100 and the warm LED unit 1200, respectively. One or more of the cool LED driver 2100 and the warm LED driver 2200 may be provided inside the SMPS unit 2000. Preferably, each of the one or more cool LED drivers (2100) or warm LED drivers (2200) is equipped with the cool LED detailed module or You can control the warm LED detail module.

Meanwhile, the MCU unit 4500 transmits the control signal to the cool LED driver 2100 and/or the warm LED driver 2200 using a pulse width modulation (PWM) method or a 0 to 10V method. This can be done, and hereinafter, for convenience of explanation, only the case of transmitting the control signal in the PWM method will be described.

In the power input unit 3000, AC power is input from the outside of the LED system 10000 to the LED system 10000, and the AC power preferably has a voltage of 220V and a frequency of 60Hz. The power input unit 3000 is connected to the control unit 4000 and transmits the AC power as driving power of the LED system 10000. Inside the control unit 4000, the current sensor 4100, the second A/D conversion module 4200, the communication unit 4300, the relay switch 4400, and the MCU unit 4500 are provided. , Additionally, it may further include passive elements and/or active elements necessary for operation of the above configuration.

The AC power supplied through the power input unit 3000 is converted into DC power through the second A/D conversion module 4200 of the control unit 4000, and the DC power is converted into DC power by each component of the control unit 4000. It is transmitted as driving power. Meanwhile, part of the AC power passes through the current sensor 4100 provided inside the control unit 4000, through the relay switch 4400, and into the first A/D conversion module of the SMPS unit 2000. It is sent to (2300).

The power flowing through the current sensor 4100 is determined according to the power used in the SMPS unit 2000, and the power information sensed by the current sensor 4100 is transmitted to the MCU unit 4500. In addition, as an embodiment of the present invention, the relay switch 4400 can be controlled by the MCU unit 4500, and preferably, the MCU unit 4500 is connected to the cool LED driver 2100 or It can be controlled by the MCU unit 4500 based on a control signal transmitted to the warm LED driver 2200.

The communication unit 4300 provided inside the control unit 4000 includes a communication module and, as shown in FIG. 1, is a control capable of receiving a lighting control signal from the outside of the LED system 10000 by wire. panel(5000); and a wireless communication unit 5100 capable of wirelessly receiving a lighting control signal from outside the LED system 10000. As an embodiment of the present invention, a user of the present invention can generate a lighting control signal for controlling lighting through the control panel 5000, and the lighting control signal is transmitted through the communication unit 4300 to the MCU unit. It can be transmitted to (4500), and the MCU unit (4500) sends a control signal for controlling the cool LED unit (1100) and/or the warm LED unit (1200) based on the lighting control signal to the cool LED driver. It can be transmitted to (2100) and/or the warm LED driver (2200).

In addition, as another embodiment of the present invention, the user can generate a lighting control signal using a user terminal such as a smartphone, and the wireless communication unit 5100 is wirelessly connected to the user terminal to transmit the lighting control signal. can receive. The lighting control signal received from the wireless communication unit 5100 may also be transmitted to the MCU unit 4500 through the communication unit 4300, as described above.

Figure 2 schematically shows the configuration of a cool LED unit 1100, a warm LED unit 1200, a cool LED driver 2100, and a warm LED driver 2200 according to some embodiments of the present invention.

As shown in Figure 2, as an LED system (10000) that performs automatic table setting according to dimming, one or more cool LEDs that emit cool white color are connected in series to form a cool LED detail module. , a cool LED unit (1100) configured with one or more cool LED detail modules in parallel; One or more warm LEDs emitting warm white color are connected in series to form a warm LED detailed module, and a warm LED unit 1200 configured in parallel with the one or more warm LED detailed modules is included, and an LED The unit 1000 includes the cool LED unit 1100 and the always warm LED unit 1200.

Schematically, Figure 2 (a) shows the configuration of a cool LED driver 2100 and a cool LED unit 1100 connected to the cool LED driver 2100, as an embodiment of the present invention, and (in Figure 2) b) is another embodiment of the present invention, showing the configuration of a plurality of warm LED drivers (2200.1 to 2200.N) and a warm LED unit 1200 connected to the plurality of warm LED drivers (2200.1 to 2200.N). 2(c) is another example of the present invention, showing a configuration in which the cool LED unit 1100 and the warm LED unit 1200 are attached.

Specifically, Figure 2 (a) shows the configuration of a cool LED driver 2100 and a cool LED unit 1100 connected to the cool LED driver 2100, as an embodiment of the present invention. Referring to the description of FIG. 1, the cool LED unit 1100 includes a plurality of cool LEDs capable of emitting cool white color light, and more specifically, the cool LED unit 1100 ) includes two or more cool LED detail modules connected in parallel, and the cool LED detail modules include two or more cool LEDs connected in series.

In the configuration shown in (a) of FIG. 2, the cool LED driver 2100 can control the brightness of the cool LED unit 1100 by adjusting the intensity of power output to the cool LED unit 1100. Meanwhile, the configuration shown in (a) of FIG. 2 can be applied not only to the cool LED unit 1100 and cool LED driver 2100 described above, but also to the warm LED unit 1200 and warm LED driver 2200.

Figure 2 (b) is an embodiment different from the above-mentioned Figure 2 (a), and shows the configuration of a plurality of warm LED drivers 2200 and a warm LED unit 1200 connected to the plurality of warm LED drivers 2200. shows. Referring to the description of FIG. 1, the warm LED unit 1200 includes a plurality of warm LEDs capable of emitting warm white color light, and more specifically, the warm LED unit 1200 ) includes two or more warm LED detail modules connected in parallel, and the warm LED detail module includes two or more warm LEDs connected in series.

Preferably, each of the plurality of warm LED drivers 2200 is capable of controlling a warm LED detail module corresponding to each warm LED driver 2200, and at this time, one of the plurality of warm LED drivers 2200 The warm LED driver 2200 is connected to one or more warm LED detail modules and can control the one or more warm LED detail modules. Through this configuration, the warm LED driver 2200 can adjust the brightness and color temperature of the warm LED unit 1200 through the amount of power output to the warm LED unit 1200. However, since it consists only of warm LEDs, there is a limitation in which various color temperature controls are impossible compared to the configuration shown in (c) of FIG. 2, which will be described later.

Figure 2 (c) is another embodiment from the above-described Figures 2 (a) and (b), and corresponds to a configuration in which the cool LED unit 1100 and the warm LED unit 1200 are provided together. . However, as shown in (c) of FIG. 2, the cool LED and the warm LED are in close contact with each other only at the installed positions, and are not electrically connected to each other. That is, as shown in (a) and (b) of Figure 2, the cool LED driver 2100 is connected only to a plurality of cool LEDs, and the warm LED driver 2200 is connected only to a plurality of warm LEDs. there is.

The configuration shown in (c) of FIG. 2 is the most preferred embodiment of the present invention. Through the configuration shown in (c) of FIG. 2, the LED unit 1000 can be controlled to various brightness and color temperatures. You can. For example, since each detailed module of the LED unit 1000 is configured in parallel, the MCU unit 4500 controls each detailed module through the cool LED driver 2100 and the warm LED driver 2200. can be controlled separately, and by adjusting the ratio of output power of the cool LED driver 2100 and the warm LED driver 2200, various brightness and color temperatures of the LED unit 1000 can be controlled. A more detailed example will be described later.

Figure 3 schematically shows the steps of controlling the LED unit 1000 by the MCU unit 4500 and the configuration of the MCU unit 4500 according to an embodiment of the present invention.

As shown in FIG. 3, the MCU unit 4500 includes an LED status determination step (S100) to determine whether the cool LED unit 1100 and the warm LED unit 1200 are suitable; Dimming control that generates an adjustment table for the dimming value according to the adjusted PWM value for the cool LED unit 1100 or the warm LED unit 1200 that is determined to require table adjustment in the LED status determination step (S100). Step (S200); and the lighting control signal; And an LED control step (S300) of generating an adjusted output control signal based on the reference dimming table or the adjustment table and transmitting the adjusted output control signal to the cool LED driver 2100 and the warm LED driver 2200. Execute ;.

Schematically, Figure 3 (a) shows the performance step of controlling the LED unit 1000 by the MCU unit 4500, and Figure 3 (b) shows the MCU unit performing the performance step ( 4500) shows the internal configuration.

Specifically, with reference to (a) of FIG. 3, the MCU unit 4500 determines the state of the LED unit 1000 by performing the LED state determination step (S100). More specifically, with reference to (b) of FIG. 3, the LED status determination step (S100) may be performed in the LED status determination unit 4510 of the MCU unit 4500, and the LED status determination unit ( 4510) may determine the LED unit 1000 as one of a normal LED, an adjustment-required LED, or an unqualified LED in the LED status determination step (S100). The normal LED refers to the actual power in the normal range in the cool LED unit 1100 or the warm LED unit 1200 when the input control value is transmitted to the cool LED driver 2100 or the warm LED driver 2200. This refers to the LED used. In addition, the adjustment-required LED corresponds to an LED that exceeds the normal range in the cool LED unit 1100 or the warm LED unit 1200 and consumes power greater than the input control value, and the unqualified LED is the LED. Although it is outside the normal range, it corresponds to an LED that consumes less power than the input control value.

The LEDs determined to be normal LEDs can be used as is, the LEDs determined to be adjustment-required LEDs can be used through a dimming adjustment step (S200) described later, and the unqualified LEDs cannot be used as commercial products. Through this process, defective LEDs can be automatically identified in the early stage of production of products that can control the brightness and/or color temperature of lighting, such as smart LEDs, which has the effect of increasing product productivity. A detailed description of the LED status determination step (S100) will be described in FIG. 4.

In the case of the LED determined as the adjustment-needing LED in the LED status determination step (S100), the dimming control step (S200) is performed by the dimming control unit 4520 of the MCU unit 4500, thereby can be used normally in products such as the smart LED. The dimming adjustment step (S200) is a step of generating an adjustment table for the dimming value according to the PWM value adjusted for the LED unit 1000. More specifically, the dimming control unit 4520 requires the adjustment. Creating a dimming table corresponding to the LED, comparing it with a standard dimming table previously stored in the MCU unit 4500, and creating an adjustment table so that the dimming value of the LED requiring adjustment can be normally output under user control. am. The dimming adjustment step (S200) will be described in detail later in FIG. 5.

The LED control step (S300) is a step of transmitting adjustment output control to the adjustment-required LED adjusted in the dimming control step (S200), and the LED control unit 4530 of the MCU unit 4500 controls the lighting from the user. After receiving the control signal, an adjustment output control signal is generated based on the adjustment table generated in the dimming adjustment step (S200), and the adjustment output control signal is transmitted to the cool LED driver 2100 or the warm LED driver 2200. send to

Meanwhile, the LED control unit 4530 also controls the LED unit 1000 for the LED unit 1000 determined as a normal LED through the LED status determination step (S100), rather than the LED requiring adjustment adjusted in the dimming adjustment step (S200). Step (S300) can be performed. At this time, the LED control unit 4530 controls the LED unit 1000 determined as the normal LED according to the reference dimming table rather than the adjustment table. A detailed description of the LED control step (S300) will be described later.

Figure 4 schematically shows the performance of the LED state determination step (S100) performed by the MCU unit 4500 according to an embodiment of the present invention.

As shown in FIG. 4, in the LED status determination step (S100), the MCU unit 4500 outputs a control signal to output the maximum PWM to each of the cool LED driver 2100 and the warm LED driver 2200. Maximum output command step (S110) for transmitting; A maximum output control step (S120) in which the cool LED driver 2100 and the warm LED driver 2200 each control the cool LED unit 1100 and the warm LED unit 1200 at maximum output according to the control signal. ); And a maximum output comparison step (S140) of comparing the maximum power sensed by the current sensor 4100 in the maximum output control step (S120) with the reference maximum power previously stored in the MCU unit 4500. The maximum power corresponds to the AC power supplied through the power inlet 3000 in the maximum output control step (S120), and in the maximum output comparison step (S140), the maximum power is within the normal range of the reference maximum power. If included, the corresponding LED unit 1000 is determined as a normal LED (S150), and if the maximum power is not included in the normal range of the reference maximum power and the maximum power exceeds the reference maximum power, the corresponding LED The unit 1000 is determined as an adjustment required LED that requires table adjustment (S150), and if the maximum power is not included in the normal range of the reference maximum power and the maximum power is less than the reference maximum power, the corresponding LED unit ( 1000) is determined as an unqualified LED (S150).

Schematically, as an embodiment of the present invention, Figure 4 (a) schematically shows the performance step of the LED status determination step (S100) performed by the MCU unit 4500 for the cool LED driver 2100. 4(b) shows the process of performing the maximum output comparison step (S140) for a plurality of cool LED drivers 2100 in a table.

Specifically, in the maximum output command step (S110), the LED state determination unit 4510 of the MCU unit 4500 transmits a control signal to output the maximum PWM to the cool LED driver 2100. For example, when the cool LED driver 2100 can control the cool LED unit 1100 with a PWM value of 0 to 100%, the LED status determination unit 4510 controls the cool LED driver 2100. A control signal is sent to output at 100%.

Meanwhile, the standard maximum power of the cool LED unit 1100 and the warm LED unit 1200 described from now on is assumed to be 50W. However, the present invention is not applicable only to LEDs with a standard maximum power of 50W, and for convenience of explanation and understanding, 50W is set as the standard maximum power.

In the maximum output control step (S120), the cool LED driver 2100 controls the cool LED unit 1100 with the maximum PWM value of the cool LED driver 2100 based on the control signal. Referring to FIG. 1, the cool LED driver 2100 operates through the power inlet 3000, the current sensor 4100, the relay switch 4400, and the first A/D conversion module 2300. Power is supplied and the cool LED unit 1100 is controlled at the maximum PWM value. Through this, the current sensor 4100 can sense how much output the cool LED driver 2100 actually uses when controlling the cool LED with the maximum PWM value. The current sensor 4100 senses maximum power information, which is the power when the cool LED driver 2100 uses the cool LED at the maximum PWM value, and provides the maximum power information to the LED status determination unit 4510. Transmit (S130).

In the maximum output comparison step (S140), with reference to (b) of FIG. 4, the maximum power information and the cool LED unit 1100 are compared by the LED state determination unit 4510 that has received the maximum power information. Compare the standard maximum power. As an embodiment of the present invention, it is preferable that the LED status determination unit 4510 sets the normal range to 10% of the standard maximum power. That is, when the LED status determination unit 4510 performs the LED status determination step (S100) on the LED unit 1000 whose standard maximum power is 50W, if the maximum power of the corresponding LED is 45W or more and 55W or less, normal It is determined as an LED, and if the maximum power of the LED exceeds 55W, the LED is judged as an LED requiring adjustment. If the maximum power of the LED is less than 45W, the LED is judged as an unqualified LED.

For example, as shown in (b) of FIG. 4, in the case of cool LED drivers #1 and #3, the maximum power is within 10% of the normal range of the reference maximum power, so cool LED drivers #1 and # The cool LED unit (1100) connected to 3 corresponds to a normal LED, and in the case of the cool LED unit (1100) connected to cool LED driver #2, the maximum power is not within the normal range of the standard maximum power and is higher than the standard maximum power. Because it is large, it is judged as an adjustment required LED. Likewise, in the case of the cool LED unit 1100 connected to cool LED driver #4, the maximum power is not within the normal range of the standard maximum power and has a maximum power lower than the standard maximum power, so it is determined to be an unqualified LED.

Meanwhile, Figure 4, as an embodiment of the present invention, shows only the cool LED driver 2100, and the present invention can also be applied to the warm LED driver 2200 in the same manner as the description of Figure 4 above. You can.

Figure 5 schematically shows the process of the dimming adjustment step (S200) according to an embodiment of the present invention.

As shown in FIG. 5, the MCU unit 4500 performs the dimming adjustment step (S200) on the LED unit 1000 determined as the adjustment-needing LED in the LED status determination step (S100), The dimming control step (S200) includes a dimming table generating step of generating a dimming table for dimming values according to a PWM value preset in the MCU unit 4500; A dimming table comparison step of comparing the dimming table and a reference dimming table previously stored in the MCU unit 4500; and an adjustment table generating step of generating an adjustment table for a dimming value according to the adjusted PWM value based on the results of the dimming table comparison step.

Schematically, Figure 5 (a) shows a dimming table for the LED unit 1000 determined as an LED requiring adjustment in the LED status determination step (S100), and Figure 5 (b) shows the MCU unit 4500. ) shows a pre-stored reference dimming table, Figure 5(c) shows a graph comparing the process of comparing the dimming table and the reference dimming table, and Figure 5(d) shows the dimming table and the reference dimming table. An adjustment table created based on the comparison results of the tables is shown.

Specifically, for the LED unit 1000 determined as an LED requiring adjustment in the LED status determination step (S100), the dimming control unit 4520 of the MCU unit 4500 performs PWM control to output a preset PWM value. A signal is transmitted to the cool LED driver 2100 or the warm LED driver 2200, and the cool LED driver 2100 and the warm LED driver 2200 output a dimming value according to the preset PWM value. The dimming table creation step is performed to generate a dimming table for the received signal from the current sensor 4100. In other words, the dimming table refers to a table of the dimming values of the corresponding driver according to the preset PWM value transmitted from the MCU unit 4500 to the cool LED driver 2100 or the warm LED driver 2200.

For example, as shown in (a) of FIG. 5, the PWM of 100% is controlled by the cool LED driver 2100, which controls the cool LED unit 1100 determined as an LED requiring adjustment, in the dimming control unit 4520. When a control signal is transmitted, the cool LED driver 2100 outputs a dimming value of 56W, and when the MCU unit 4500 transmits a 90% PWM control signal to the cool LED driver 2100, the The cool LED driver 2100 outputs a dimming value of 52W, and when the MCU unit 4500 transmits a 10% PWM control signal to the cool LED driver 2100, the cool LED driver 2100 outputs 8W. Outputs the dimming value. In addition, the standard dimming table shown in (b) of FIG. 5 refers to a table that is used as a standard when producing a product, that is, a table corresponding to a dimming value according to a preset PWM value when designing the product.

The dimming control unit 4520 of the MCU unit 4500 performs the dimming table comparison step of comparing the dimming table and the reference dimming table as shown in (c) of FIG. 5. In (c) of Figure 5, graph A is a graph corresponding to the dimming table of the cool LED unit 1100 determined as an LED requiring adjustment as in the above-mentioned example, and graph B is the standard dimming of the cool LED unit 1100. This is a graph corresponding to a table. According to one embodiment of the present invention, in the case of an LED requiring adjustment as shown in (c) of FIG. 5, the A graph corresponding to the dimming table has higher dimming at the same PWM than the B graph corresponding to the standard dimming table. It is shown as outputting a value. In this case, the dimming control unit 4520 creates an adjustment table that adjusts the shape of the A graph to have a shape similar to the B graph.

Referring to the graph shown in (c) of FIG. 5, in order to allow the A graph to have a similar shape to the B graph, the PWM value at which the cool LED unit 1100, which is determined to be the adjustment-needing LED, outputs 50W You need to find . To this end, by finding the reference dimming value according to the PWM value of 100% of the B graph and finding the PWM value that outputs the reference dimming value in the A graph, the adjusted PWM value can be found.

That is, as shown in (c) of Figure 5, when the dimming control unit 4520 transmits a PWM control signal of 100% to the cool LED driver 2100, when the PWM value is 100% through the B graph It can be seen that the standard dimming value of is 50W, and in the graph A above, it can be seen that the PWM value that outputs 50W is 80%. Through this, when the user transmits a lighting control signal with 100% brightness, the dimming control unit 4520 transmits an 80% control signal to the cool LED driver 2100, and the cool LED driver 2100 By receiving the control signal, 50W can be output. In the same way, the standard dimming value when the PWM value is 90% in the B graph is 45W, and the PWM value that outputs 45W in the A graph is 71%. Therefore, when the user transmits a lighting control signal at 90% brightness, the dimming control unit 4520 transmits a 71% control signal to the cool LED driver 2100, and the cool LED driver 2100 By receiving the control signal, 45W can be output.

In this way, when the dimming control unit 4520 transmits the PWM control signal to the cool LED driver 2100 by performing the dimming control step (S200), the cool LED driver ( 2100) performs the adjustment table creation step of generating an adjustment table for the dimming value according to the adjusted PWM value to output the same value as the reference dimming value.

Meanwhile, as described above, in Figure 5, the cool LED unit 1100 is described as an embodiment of the present invention, but as another embodiment of the present invention, the warm LED unit 1200 is also described above. The dimming adjustment step (S200) can be performed in this way.

Figure 6 schematically shows a control panel 5000 that generates a lighting control signal according to an embodiment of the present invention, and Figure 7 schematically shows a lighting control signal according to several embodiments of the present invention.

As shown in FIG. 6, the control panel 5000 includes a brightness control unit that adjusts the brightness of the lighting and a color temperature control unit that adjusts the color temperature of the lighting. According to one embodiment of the present invention, the brightness control unit is capable of adjusting the brightness in a total of 10 levels at 10% intervals from the OFF level to the MAX level corresponding to the 100% level, and according to another embodiment of the present invention, each level By adjusting the interval between steps, you can control the brightness of the lighting in more detailed steps. In addition, the color temperature control unit can control the color temperature of the lighting in various ways by adjusting the output of each of the cool LED unit 1100 and the warm LED unit 1200 through the configuration shown in (c) of FIG. 2. You can.

Meanwhile, the external appearance of the control panel 5000 shown in FIG. 6 is an embodiment of the present invention, and may be different from the actual external appearance.

Schematically, Figures 7 (a) to (c) show several examples of lighting control signals set by a user, and the lighting control signals are generated when the user uses the control panel 5000 shown in Figure 6. It can be created through or through the user terminal. The lighting control signal generated by the user is transmitted to the MCU unit 4500 through the communication unit 4300, with reference to FIG. 1. As shown in Figure 7, the lighting control signal includes brightness information generated through the brightness control unit; and color temperature information generated through the color temperature control unit.

Figure 8 schematically shows the performance of the LED control step (S300) performed by the MCU unit 4500 according to an embodiment of the present invention.

As shown in FIG. 8, the LED control step (S300) includes a lighting control signal reception step (S400) of receiving the lighting control signal including brightness information and color temperature information of the lighting from the communication unit 4300; Based on the lighting control signal, an expected output calculation step (S330) of calculating expected output from the cool LED driver 2100 and the warm LED driver 2200; An adjustment output calculation step (S340) of calculating the adjusted outputs of the cool LED driver (2100) and the warm LED driver (2200) based on the performance result of the expected output calculation step (S330) and the adjustment table; and transmitting an adjustment output control signal for the adjustment output to the cool LED driver 2100 and the warm LED driver 2200 (S350), wherein the cool LED driver 2100 and the warm LED driver (2200) each controls the cool LED unit 1100 and the warm LED unit 1200 with the adjusted output based on the adjusted output control signal,

The LED control step (S300), after the lighting control signal reception step (S400), determines whether the cool LED unit 1100 or the warm LED unit 1200 corresponding to the lighting control signal is the adjustment-needing LED. Steps (S410 and S440); If the cool LED unit 1100 or the warm LED unit 1200 corresponds to the adjustment-required LED, in the adjustment output calculation step (S340), the cool LED unit 1100 or the warm LED unit 1200 Calculating the adjustment output based on the corresponding adjustment table (S420 or S450); And if the cool LED unit 1100 or the warm LED unit 1200 corresponds to the normal LED, in the adjusted output calculation step (S340), the cool LED unit 1100 or the warm LED unit 1200 It further includes calculating the adjustment output based on the corresponding reference dimming table (S430 or S460).

Schematically, Figure 8 (a) shows the performance step of the LED control step (S300), and Figure 8 (b) shows the LED unit to be controlled after the lighting control signal reception step (S400) is performed. The process of determining the table to be used in the adjustment output calculation step (S340) based on the state (1000) is shown.

Specifically, the LED control unit 4530 of the MCU unit 4500 receives a lighting control signal as shown in FIG. 7 from the communication unit 4300, and the lighting control signal includes the lighting set by the user's input. Brightness information and color temperature information are included. The MCU unit 4500 performs step S310 of calculating the output value of lighting based on the brightness information included in the received lighting control signal. For example, when the maximum reference power is 50W and the user inputs 100% brightness for the LED unit 1000 determined to be a normal LED, the MCU unit 4500 operates the cool LED driver 2100 and/ Alternatively, a control signal to output a total of 50W can be transmitted to the warm LED driver 2200 through a PWM control signal of 100%, or when the user inputs a brightness of 40%, the MCU unit 4500 A control signal to output 20W, which is 40% of the maximum reference power, as the total output of the lighting can be transmitted to the cool LED driver 2100 and/or the warm LED driver 2200 through a 40% PWM control signal. .

After performing step S310, the LED control unit 4530 performs step S320 to calculate the ratio of the cool LED unit 1100 and the warm LED unit 1200 based on the color temperature information included in the lighting control signal. . For example, taking the lighting control signal shown in FIG. 7 as an example, when the user inputs a color temperature of 5500K, the LED control unit 4530 controls the cool LED driver 2100 and the warm LED driver 2200, respectively. When transmitting a PWM control signal to output the same output, that is, at a ratio of 5:5, or when the user inputs a color temperature of 8000K, the LED control unit 4530 operates the cool LED driver 2100 and the warm LED driver ( 2200) A PWM control signal is sent to each to be output at a ratio of 8:2. At this time, the ratio of the output values of the cool LED driver 2100 and the warm LED driver 2200 can be determined based on a preset ratio value.

As such, as an embodiment of the present invention, the ratio of each of the cool LED driver 2100 and the warm LED driver 2200 can be adjusted to a total of 11 color temperatures from 0:10 to 10:0, and the present invention As another embodiment, a total of 66 color temperatures can be adjusted by adjusting the ratio of the cool LED driver 2100 and the warm LED driver 2200 through the configuration shown in (c) of Figure 2, and the present invention As another embodiment, the color temperature can be controlled through a more diverse ratio than the above embodiment depending on the devices and firmware provided in the LED system 10000.

Referring to FIG. 6, when the user turns the dial toward WARM in the color temperature control unit of the control panel 5000, the MCU unit 4500 outputs more output to the warm LED driver 2200 than the cool LED driver 2100. transmits a PWM control signal that commands, and conversely, when the user turns the dial toward COOL in the color temperature control unit of the control panel 5000, the MCU unit 4500 sends the warm LED driver ( 2200) and transmits a PWM control signal that commands more output. Meanwhile, the above-described ratio and color temperature according to the ratio are one embodiment of the present invention, and the actual ratio and color temperature according to the ratio may be different depending on each configuration and firmware used in the LED system (10000).

The LED control unit 4530 performs an expected output calculation step (S330) in which the expected output of the cool LED driver 2100 and/or the warm LED driver 2200 is calculated based on the results of steps S310 to 320. Perform. For example, citing the above-mentioned example, when transmitting a lighting control signal with brightness information of 40% and color temperature information of 5500K, the LED unit 1000 must output a total of 20W, and the color temperature information is According to the set ratio value, the output of the cool LED driver 2100 and the warm LED driver 2200 should be controlled at 5:5. That is, the MCU unit 4500 transmits a PWM control signal corresponding to 10W to the cool LED driver 2100 and the warm LED driver 2200, respectively. If both the cool LED unit 1100 and the warm LED unit 1200 of the lighting are LED units 1000 determined to be normal LEDs, according to the standard dimming table as shown in (b) of FIG. 5, the The MCU unit 4500 transmits a PWM control signal of 20% to the cool LED driver 2100 and the warm LED driver 2200, respectively.

Meanwhile, unlike the above, the MCU unit 4500, when one or more of the cool LED unit 1100 and the warm LED unit 1200 of the corresponding lighting is determined to be an LED that requires adjustment, An adjustment output calculation step (S340) is performed to convert the expected output calculated based on the reference dimming table into an adjusted output based on the adjustment table as shown in (d) of FIG. 5. Details about the adjustment output calculation step (S340) will be described later.

After converting the expected output into the adjusted output in the adjusted output calculation step (S340), the LED control unit 4530 of the MCU unit 4500 sends an adjusted output control signal generated based on the adjusted output to the cooled output. Step S350 of transmitting to the LED driver 2100 and the warm LED driver 2200 is performed.

Figure 8 (b) shows the performance steps performed by the LED control unit 4530 after the lighting control reception step, and the performance steps include the adjustment output calculation step according to the state of the controlled LED unit 1000. This is the step of determining the table to be used in (S340). That is, the LED control unit 4530 determines the table to be used in the adjustment output calculation step (S340) based on the determination result of the corresponding LED unit 1000 in the LED state determination step (S100).

As shown in (b) of FIG. 8, the LED control unit 4530 receives the lighting control signal from the communication unit 4300 (S400), and then controls the LED unit 1000 through the lighting control signal. ) determine the status of First, the LED control unit 4530 determines whether the cool LED unit 1100 of the corresponding LED unit 1000 is an LED that requires adjustment (S410). When the cool LED unit 1100 is determined to be an LED requiring adjustment in the LED status determination step (S100), the adjustment output of the cool LED unit 1100 is based on the adjustment table for the cool LED unit 1100. Calculated (S420). Meanwhile, when the cool LED unit 1100 is determined to be a normal LED rather than an LED requiring adjustment, the LED control unit 4530 sets the reference dimming table of the cool LED unit 1100 to the cool LED unit 1100. Based on this, the adjusted output is calculated (S430), and a PWM control signal is generated based on this and transmitted to the corresponding cool LED driver (2100).

Likewise, the LED control unit 4530 determines whether the warm LED unit 1200 of the corresponding LED unit 1000 is an LED that requires adjustment (S440). When the warm LED unit 1200 is determined to be an LED requiring adjustment in the LED status determination step (S100), the adjustment output of the warm LED unit 1200 is based on the adjustment table for the warm LED unit 1200. Calculated (S450). Meanwhile, when the warm LED unit 1200 is determined to be a normal LED rather than an LED requiring adjustment, the LED control unit 4530 adjusts the warm LED unit 1200 to the standard dimming table of the warm LED unit 1200. Based on this, the adjusted output is calculated (S460), and a PWM control signal is generated based on this and transmitted to the corresponding warm LED driver (2200).

Meanwhile, performing steps S410 to S460 may be performed between steps S310 and S320 as an embodiment of the present invention, and may be performed between steps S330 and S340 as another embodiment of the present invention. there is.

Additionally, the execution order of step S410 and step S440 may be changed or may be performed simultaneously, and either step S410 or step S440 may be omitted depending on the color temperature information of the lighting control signal.

9 to 11 schematically show a process in which the LED unit 1000 is controlled through the LED control step (S300) according to some embodiments of the present invention.

Schematically, Figures 9 to 11 all show several embodiments of the process in which the LED unit 1000 is controlled in the LED control step (S300), and the numbers depicted in Figures 9 to 11 indicate the LED system. It is described according to an example of (10000) and may differ depending on the configuration of the LED system (10000) and the firmware that controls the configuration.

In addition, as described above, the LED unit 1000 mentioned in FIGS. 9 to 11 has a reference maximum power of 50W for each of the cool LED unit 1100 and the warm LED unit 1200, and the cool LED unit 1100 ) and the warm LED unit 1200 are used simultaneously, the standard maximum power of the LED unit 1000 is 50W.

Specifically, as shown in (a) of FIG. 9, the lighting control signal set by the user's input includes 80% brightness information and 5500K color temperature information. The LED control unit 4530 receives the control signal from the communication unit 4300 by performing the lighting control signal receiving step (S400), and performs the performing step shown in (b) of FIG. 8 to control the LED of the corresponding lighting. The status of unit 1000 is determined. As a result, as shown in (a) of Figure 9, the cool LED part 1100 of the corresponding LED part 1000 was determined to be an LED requiring adjustment, and the warm LED part 1200 of the corresponding LED part 1000 was determined to be a normal LED. It has been done. By performing the expected output calculation step (S330), the LED control unit 4530 calculates that the total output of the lighting is 40W based on the brightness information of the lighting control signal, and accordingly controls the lighting with a color temperature of 5500K. In order to do this, the cool LED unit 1100 and the warm LED unit 1200 must each be calculated with an output of 5:5 according to a preset ratio value, so the expected output of 20W is calculated.

As described above, after calculating the expected output, only the cool LED unit 1100 of the lighting requires adjustment, so with reference to (b) of FIG. 8, the LED control unit 4530 controls the cool LED unit 1100. The adjustment output is calculated based on the adjustment table of 1100 (S420), and the warm LED unit 1200 calculates the adjustment output according to the reference dimming table (S460). At this time, in the process of calculating the adjustment output of the cool LED driver 2100, referring to FIG. 5, the adjustment output may be calculated based on the adjustment table created in the adjustment table creation step (S420).

Through comparison of the A graph corresponding to the dimming table shown in (b) of FIG. 9 and the B graph corresponding to the standard dimming table, the adjusted light that calculates 20W according to the adjustment table of the cool LED unit 1100 of the corresponding lighting It can be confirmed that the PWM value is 32%, and since the warm LED part (1200) of the light is a normal LED, 20W can be output through a PWM value of 40% according to the standard dimming table.

Through this, as shown in (c) of FIG. 9, the LED control unit 4530 provides a PWM control signal of 32% to the cool LED driver 2100 of the corresponding lighting; And a PWM control signal of 40% for the warm LED driver (2200) of the lighting. An adjusted output calculation step (S340) is performed to calculate an adjusted output control signal including, and the adjusted output control signal is sent to the cool LED driver ( 2100) and the warm LED driver 2200, the lighting can be controlled according to the user's input.

As shown in (a) of FIG. 10, the lighting control signal set by the user's input includes 100% brightness information and 8000K color temperature information. The LED control unit 4530 receives the control signal from the communication unit 4300 by performing the lighting control signal receiving step (S400), and performs the performing step shown in (b) of FIG. 8 to control the LED of the corresponding lighting. The status of unit 1000 is determined. As a result, as shown in (a) of Figure 10, the cool LED part 1100 of the corresponding LED part 1000 was determined to be a normal LED, and the warm LED part 1200 of the corresponding LED part 1000 was determined to be an adjustment-required LED. It has been done. By performing the expected output calculation step (S330), the LED control unit 4530 calculates that the total output of the lighting is 50W based on the brightness information of the lighting control signal, and accordingly controls the lighting with a color temperature of 8000K. In order to do this, the cool LED unit 1100 and the warm LED unit 1200 must each calculate an output of 8:2 according to a preset ratio value, so the cool LED unit 1100 is controlled to an output of 40W, and the The warm LED unit 1200 can calculate the expected output controlled by an output of 10W.

As described above, after calculating the expected output, only the warm LED unit 1200 of the corresponding lighting is an LED that requires adjustment, so with reference to (b) of FIG. 8, the LED control unit 4530 controls the warm LED unit 1200. The adjustment output is calculated based on the adjustment table of 1200 (S450), and the cool LED unit 1100 calculates the adjustment output according to the reference dimming table (S430). At this time, in the process of calculating the adjustment output of the warm LED driver 2200, referring to FIG. 5, the adjustment output may be calculated based on the adjustment table created in the adjustment table creation step (S450).

Through comparison of the A graph corresponding to the dimming table shown in (b) of FIG. 10 and the B graph corresponding to the standard dimming table, the adjusted light that calculates 10W according to the adjustment table of the warm LED unit 1200 of the corresponding lighting It can be confirmed that the PWM value is 15%, and since the cool LED part (1100) of the light is a normal LED, 40W can be output through a PWM value of 80% according to the standard dimming table.

Through this, as shown in (c) of FIG. 10, the LED control unit 4530 provides a PWM control signal of 80% to the cool LED driver 2100 of the corresponding lighting; And a PWM control signal of 15% for the warm LED driver (2200) of the lighting; performing an adjusted output calculation step (S340) of calculating an adjusted output control signal including; and transmitting the adjusted output control signal to the cool LED driver ( 2100) and the warm LED driver 2200, the lighting can be controlled according to the user's input.

As shown in (a) of FIG. 11, the lighting control signal set by the user's input includes 20% brightness information and 5500K color temperature information. The LED control unit 4530 receives the control signal from the communication unit 4300 by performing the lighting control signal receiving step (S400), and performs the performing step shown in (b) of FIG. 8 to control the LED of the corresponding lighting. The status of unit 1000 is determined. As a result, as shown in (a) of FIG. 11, both the cool LED part 1100 and the warm LED part 1200 of the corresponding LED part 1000 were determined as LEDs requiring adjustment. By performing the expected output calculation step (S330), the LED control unit 4530 calculates that the total output of the lighting is 10W based on the brightness information of the lighting control signal, and accordingly controls the lighting with a color temperature of 3000K. In order to do this, the cool LED unit 1100 and the warm LED unit 1200 must each calculate an output of 2:8 according to a preset ratio value, so the cool LED unit 1100 is controlled with an output of 2W, and the The warm LED unit 1200 can calculate the expected output controlled by an output of 8W.

As described above, after calculating the expected output, both the cool LED unit 1100 and the warm LED unit 1200 of the corresponding lighting are LEDs that require adjustment, so the cool LED unit 1100 and the warm LED unit 1200 are The adjustment output calculation step (S340) is performed. The process of calculating the adjusted output of the cool LED driver 2100 and the warm LED driver 2200 in the adjusted output calculation step (S340) is the same as (b) in FIG. 11, which refers to FIG. 5. The adjustment output can be calculated based on the adjustment table created through the adjustment table creation step.

Through comparison of the A graph corresponding to the dimming table shown in (b) of FIG. 11 and the B graph corresponding to the standard dimming table, the adjusted light that calculates 2W according to the adjustment table of the cool LED unit 1100 of the corresponding lighting It can be confirmed that the PWM value is 3%, and the adjusted PWM value that calculates 8W according to the adjustment table of the warm LED unit 1200 of the corresponding lighting is 11%.

Through this, as shown in (c) of FIG. 11, the LED control unit 4530 provides a 3% PWM control signal to the cool LED driver 2100 of the corresponding lighting; And a PWM control signal of 11% for the warm LED driver 2200 of the lighting. An adjusted output calculation step (S340) is performed to calculate an adjusted output control signal including, and the adjusted output control signal is sent to the cool LED driver ( 2100) and the warm LED driver 2200, the lighting can be controlled according to the user's input.

According to one embodiment of the present invention, defective LEDs can be automatically identified at the beginning of smart LED product production, which has the effect of increasing product productivity.

According to one embodiment of the present invention, by using an LED unit (1000) composed of one or more LED detail modules in which a plurality of LEDs are connected in series in parallel, the effect of controlling the brightness and color temperature of lighting in various ways can be achieved. You can.

According to one embodiment of the present invention, by using the LED unit 1000 composed of one or more LED detail modules in parallel, maintenance is easy when a specific LED is produced defectively or is broken, thereby reducing maintenance costs. It can be effective.

According to one embodiment of the present invention, when the actual output voltage is output higher than the input control value, the difference between the input control value and the actual output power is reduced by automatically creating an adjustment table to adjust the output voltage, thereby reducing the product It can have the effect of reducing the failure rate and extending the lifespan of the product.

According to one embodiment of the present invention, the output power of an LED that outputs power higher than the normal range is adjusted to the normal range based on an automatically generated adjustment table, thereby achieving the effect of minimizing unnecessary power consumption. .

As described above, although the embodiments have been described with limited examples and drawings, various modifications and variations can be made by those skilled in the art from the above description. For example, the described techniques are performed in a different order than the described method, and/or components of the described system, structure, device, circuit, etc. are combined or combined in a different form than the described method, or other components are used. Alternatively, appropriate results may be achieved even if substituted or substituted by an equivalent. Therefore, other implementations, other embodiments, and equivalents of the claims also fall within the scope of the claims described below.

Claims (6)

An LED system that performs table automatic setting according to dimming,
A cool LED unit is formed by connecting one or more cool LEDs emitting cool white color in series to form a cool LED detail module, and the one or more cool LED detail modules are configured in parallel;
A warm LED unit is formed by connecting one or more warm LEDs emitting warm white color in series to form a warm LED detail module, and the one or more warm LED detail modules are configured in parallel;
A first A/D conversion module that converts AC power and DC power; A cool LED driver that receives power output from the first A/D conversion module and controls the cool LED unit; and a warm LED driver that receives power output from the first A/D conversion module and controls the warm LED unit.
A power inlet unit where AC power is supplied from the outside; and
A current sensor that senses AC power supplied to the power input unit; A second A/D conversion module that converts some of the AC power input into the power input unit into driving power; A communication unit capable of performing wired or wireless communication to receive a lighting control signal from outside the LED system; A relay switch that transfers the AC power supplied to the power input unit to the first A/D conversion module of the SMPS unit; And a control unit including an MCU unit that controls the LED system,
A control panel connected to the communication unit and capable of receiving the lighting control signal from outside the LED system by wire; And a wireless communication unit capable of wirelessly receiving the lighting control signal from the outside of the LED system,
The cool LED and the warm LED are installed in close contact with each other in pairs, but electrically, the cool LED driver is connected only to the plurality of cool LEDs, the warm LED driver is connected only to the plurality of warm LEDs, and the MCU unit is connected to the cool LED. The ratio of each detailed module and output power can be controlled through the LED driver and warm LED driver, so that the LED unit including the cool LED unit and the warm LED unit can output lighting with a plurality of hierarchical brightness and color temperature. There is,
The MCU unit,
An LED status determination step of determining whether the cool LED unit and the warm LED unit are eligible;
A dimming adjustment step of generating an adjustment table for a dimming value according to the adjusted PWM value for the cool LED unit or the warm LED unit determined to require table adjustment in the LED status determination step; and
the lighting control signal; And an LED control step of generating an adjusted output control signal based on a reference dimming table or the adjustment table and transmitting the adjusted output control signal to the cool LED driver and the warm LED driver,
The MCU unit,
In the LED status determination step, the dimming adjustment step is performed on the LED portion determined to be an adjustment-needing LED,
The dimming control step is,
A dimming table generating step of generating a dimming table by receiving a dimming value according to a PWM value preset in the MCU unit from the current sensor;
A dimming table comparison step of comparing the dimming table and a reference dimming table previously stored in the MCU unit; and
Based on the results of the dimming table comparison step, an adjustment table is created for generating an adjustment table for the dimming value according to the adjusted PWM value, and the adjustment table is configured so that the shape of the graph according to the dimming table is based on the reference dimming table. It includes a step of creating an adjustment table, which corresponds to a table that is adjusted to have a similar shape to the graph according to the graph,
The coordination table creation step is,
Upon receiving the lighting control signal set by the user, when the dimming control unit performing the dimming control step transmits the PWM control signal to the cool LED driver or warm LED driver, the cool LED driver or warm LED driver sets the reference dimming value. Output the same value as
The LED control step is,
A lighting control signal receiving step of receiving the lighting control signal including brightness information and color temperature information of lighting from the communication unit;
Determining whether adjustment is required for each of the cool LED unit and the warm LED unit corresponding to the lighting control signal;
If the cool LED unit or the warm LED unit corresponds to an LED requiring adjustment, the adjustment output for each is calculated based on the adjustment table corresponding to each cool LED unit or warm LED unit, and the calculated adjustment output is calculated based on the actual lighting. Calculating the output ratios for each of the cool LED unit and the warm LED unit so that the brightness information and color temperature information output from the lighting control signal match the lighting control signal; and
If the cool LED unit or the warm LED unit corresponds to a normal LED, the adjustment output for each is calculated based on the reference dimming table corresponding to the cool LED unit or the warm LED unit, but the calculated adjustment output is the actual LED. An LED that performs table automatic setting according to dimming, including a step of calculating output ratios for each of the cool LED unit and the warm LED unit so that the brightness information and color temperature information output from the lighting match the lighting control signal. system.
delete In claim 1,
The LED status judgment step is,
A maximum output command step in which the MCU unit transmits a control signal to output maximum PWM to each of the cool LED driver and the warm LED driver;
A maximum output control step in which each of the cool LED driver and the warm LED driver controls the cool LED unit and the warm LED unit to achieve maximum output according to the control signal, respectively; and
A maximum output comparison step of comparing the maximum power sensed by the current sensor in the maximum output control step with the reference maximum power previously stored in the MCU unit,
The maximum power corresponds to the AC power supplied through the power inlet in the maximum output control step,
The maximum output comparison step is,
If the maximum power is within the normal range of the reference maximum power, the corresponding LED unit is determined to be a normal LED,
If the maximum power is not within the normal range of the standard maximum power and the maximum power exceeds the standard maximum power, the corresponding LED is determined as an adjustment required LED that requires table adjustment,
An LED system that performs automatic table setting according to dimming, wherein when the maximum power is not within the normal range of the reference maximum power and the maximum power is less than the reference maximum power, the corresponding LED unit is determined as an unqualified LED.
delete In claim 1,
The LED control step is,
An expected output calculation step of calculating expected output from the cool LED driver and the warm LED driver based on the lighting control signal;
An adjustment output calculation step of calculating adjusted outputs of the cool LED driver and the warm LED driver based on the performance result of the expected output calculation step and the adjustment table; and
Further comprising: transmitting an adjustment output control signal for the adjustment output to the cool LED driver and the warm LED driver,
Each of the cool LED driver and the warm LED driver,
An LED system that performs automatic table setting according to dimming, controlling the cool LED unit and the warm LED unit respectively with the adjustment output based on the adjustment output control signal. delete

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