KR101164631B1 - Led illumination control system and control method thereof - Google Patents

Abstract

PURPOSE: An LED lighting control system and a method for controlling thereof are provided to reduce cost of maintenance and replacement by including a sub power supply device regardless of a main power supply device. CONSTITUTION: A main power supply device(110) or a sub power supply device(120) is composed of a switching mode power supply. A control part(130) includes a voltage sensing unit(135) and a decision unit(137). A switching module(140) supplies a commercial alternating current voltage to the main power supply device or the sub power supply device according to a control signal from the control part. A plurality of LED driving modules(150) supplies a constant voltage to a plurality of LED modules(160). The LED module includes one or more of LED elements.

Description

LED lighting control system and its control method {LED ILLUMINATION CONTROL SYSTEM AND CONTROL METHOD THEREOF}

The present invention relates to an LED lighting control system and a control method thereof, and to a LED lighting control system and a control method thereof having a sub-power supply separately from the main power supply, which can reduce maintenance and replacement costs. will be.

As the modernization of the building increases, the size of the building is becoming larger and the current complexes (apartments, villas, officetels, venture towers, etc.) are illuminated around underground parking lots and sidewalks. The lights are installed.

Since the lights are arranged in a large number of lights according to the land security regulations corresponding to the building size, it is required to develop a system for stably supplying power to these multiple lights and for easy maintenance.

The incandescent lamp is mainly used incandescent lamp, fluorescent lamp or halogen lamp using AC voltage, but in recent years has been replaced by LED (Light Emitting Diode) lamps that support the long life, the power consumption is low, which is substantially longer.

1 is a block diagram showing the configuration of a conventional LED lighting control system.

Referring to FIG. 1, a conventional LED lighting control system 1 includes a plurality of switching mode power supplies (SMPS) 10, an LED driving module 20 and an LED driving module connected to a plurality of SMPSs 10, respectively. 20 is composed of an LED module 30 receives a constant voltage from.

The conventional LED lighting control system 1 is limited to the manufacture of LED lighting equipment due to the size of the SMPS 10 is provided with the SMPS 10 as much as the number of LED driving module (20). In addition, there is a problem in that the replacement time of the entire LED lighting device is shortened according to the life difference between the SMPS 10 and the LED driving module 20.

Figure 2 is a block diagram showing the configuration of another conventional LED lighting control system.

Another conventional LED lighting control system 2 is a SMPS (40) so that a constant current is applied to the LED module 60 and the LED element included in the LED module 60 is supplied with light as shown in FIG. LED drive module 50 to receive power from the power supply to the LED module 60, and SMPS (40) for converting and outputting a commercial AC voltage to a DC voltage of a predetermined level required for driving the LED. In the case of another conventional LED lighting control system 2, since the SMPS 40 does not need to be installed as many as the number of the LED driving modules 50, it is possible to overcome the limitations of the manufacturing of the LED lighting apparatus, and the maintenance is illustrated in FIG. There is an advantage that it is easier than the LED lighting control system 1.

However, the other conventional LED lighting control system 2 has low reliability in providing uniform brightness for the LED modules 60 according to the distance from the SMPS 40, and the performance deterioration according to the individual lifetime or the use situation is also reduced. There is a problem of lowering the reliability of uniformity.

In addition, there is a difference in the lifespan of the LED device included in the LED module than the SMPS 40, there is a problem that the maintenance cost increases because the failure of the SMPS 40 is frequently replaced.

An object of the present invention is to provide a sub-main power supply separate from the main power supply for converting the commercial AC voltage to a predetermined level of DC voltage and outputting the same to extend the replacement time of the lighting system according to the LED life and the life difference It is to provide an LED lighting control system and a control method thereof.

In addition, an object of the present invention is to determine the drop of the DC voltage transmitted to the LED driving module to amplify the constant voltage applied to the LED module according to the degree of drop of the DC voltage applied to the LED module to uniformly the brightness of the entire LED lighting The present invention provides a sustainable LED lighting control system and a control method thereof.

In order to achieve the above object, the LED lighting control system according to an embodiment of the present invention is a switching module for outputting the input commercial AC voltage, and converts the commercial AC voltage output from the switching module to a predetermined level of DC voltage And outputting a control signal according to a determination result by determining whether the main power supply is normally operated by detecting the main power supply or the sub power supply and the DC power output from the main power supply. A plurality of LED modules including a control unit, at least one LED element, and the DC voltages output from the main power supply unit or the sub power supply unit to apply a constant current to each of the plurality of LED modules. LED driving module; wherein the switching module is phase In response to the control signal output from the controller is supplied by changing the commercial AC voltage from the main power supply to the sub power supply.

The control unit detects the DC voltage output from the main power supply and controls the switching module to supply the commercial AC voltage to the main power supply when it is determined that the main power supply operates normally. If it is determined that the operation abnormally outputs a control signal for controlling the switching module to supply the commercial AC voltage to the sub power supply.

The control unit detects the DC voltage output from the main power supply and outputs a detection signal, and compares the detection signal output from the voltage detection unit with a reference value and supplies the main power according to a comparison result. And a determination unit for determining whether the device is operating normally and outputting the control signal.

According to an embodiment, each of the plurality of LED driving modules determines a drop portion of the DC voltage transmitted to each of the plurality of LED driving modules, and amplifies a constant voltage applied to the LED module according to the degree of drop of the DC voltage. It further includes a voltage amplifier applied to the LED module.

The LED lighting control system may further include a timer for providing the controller with time information for counting the life of the main power supply.

The controller may check the life of the main power supply by counting an operation time of the main power supply using the time information provided from the timer as a reference clock.

The control method of the LED lighting control system according to an embodiment of the present invention includes the steps of outputting a commercial AC voltage inputted by the switching module, the main power supply or sub-power supply device to output the commercial AC voltage output from the switching module Converting the DC voltage to a predetermined level and outputting the control signal; and a control unit detects the DC voltage output from the main power supply device to determine whether the main power supply device operates normally, and outputs a control signal according to a determination result. And supplying, by the switching module, the commercial AC voltage to the main power supply or the sub power supply in accordance with the control signal output from the controller. The main power supply or the sub power supply. Converts the commercial AC voltage to the DC voltage Step, and receiving a plurality of LED driving module is supplying the direct current voltage output from the main power supply or the sub power supply that includes the step of applying a rated voltage to each of the plurality of LED modules.

The outputting of the control signal may include converting the commercial AC voltage to the main power supply when the control unit senses the DC voltage output from the main power supply to determine that the main power supply operates normally. The switching module is controlled to be supplied, and when it is determined to be abnormally operated, a control signal for controlling the switching module to supply the commercial AC voltage to the sub power supply is output.

The applying of the rated voltage to each of the plurality of LED modules may include determining whether the voltage amplification unit included in each of the plurality of LED driving modules is lowered in the DC voltage transmitted to each of the plurality of LED driving modules. The method may further include amplifying a rated voltage applied to the LED module according to the degree of drop and applying the same to the plurality of LED modules.

According to an embodiment of the present invention, a control method of the LED lighting control system is provided by the controller receiving time information from a timer and using the time information provided from the timer as a reference clock to count an operating time of the main power supply device to the main clock. Checking the life of the power supply and if it is determined that the main power supply has reached the end of the life of the power supply unit to output a control signal for controlling the switching module to supply the commercial AC voltage to the sub power supply. Can be.

LED lighting control system and its control method according to an embodiment of the present invention is the difference between the LED lighting and life by providing a separate sub main power supply in addition to the main power supply for converting the commercial AC voltage to a predetermined level of DC voltage It is possible to extend the replacement time of the lighting system according to the reduction of maintenance and replacement costs.

In addition, the LED lighting control system and its control method according to an embodiment of the present invention determines the drop of the DC voltage transmitted to the LED driving module to amplify the constant voltage applied to the LED module according to the degree of drop of the DC voltage LED module When applied to, the brightness of the entire LED lighting can be maintained uniformly.

The detailed description of each drawing is provided in order to provide a thorough understanding of the drawings cited in the detailed description of the invention.
1 is a block diagram showing the configuration of a conventional LED lighting control system.
Figure 2 is a block diagram showing the configuration of another conventional LED lighting control system.
3 is a block diagram illustrating an LED lighting control system according to an embodiment of the present invention.
4 is a block diagram illustrating an LED lighting control system according to another embodiment of the present invention.
5 is a flowchart illustrating a control method of the LED lighting control system according to an embodiment of the present invention.

It is to be understood that the specific structural or functional description of embodiments of the present invention disclosed herein is for illustrative purposes only and is not intended to limit the scope of the inventive concept But may be embodied in many different forms and is not limited to the embodiments set forth herein.

The embodiments according to the concept of the present invention can make various changes and can take various forms, so that the embodiments are illustrated in the drawings and described in detail herein. It should be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to the particular forms disclosed, but includes all modifications, equivalents, or alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another, for example without departing from the scope of the rights according to the inventive concept, and the first component may be called a second component and similarly the second component. The component may also be referred to as the first component.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that no other component exists in the middle. Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, the terms "comprises" or "having" and the like are used to specify that there are features, numbers, steps, operations, elements, parts or combinations thereof described herein, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and are not construed in ideal or excessively formal meanings unless expressly defined herein. Do not.

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

3 is a block diagram illustrating an LED lighting control system according to an embodiment of the present invention.

Referring to FIG. 3, the LED lighting control system 100 includes a main power supply 110, a sub power supply 120, a controller 130, a switching module 140, a plurality of LED driving modules 150, A plurality of LED module 160, and a timer 170.

The internal configurations of the main power supply 110 and the sub power supply 120 of FIG. 3 are the same and perform the same operation. The sub power supply 120 is used to supply DC voltage to the LED driving module 150 preliminarily when the main power supply 110 reaches its end of life or when the main power supply 110 fails. .

The main power supply 110 or the sub power supply 120 is composed of a switching mode power supply (SMPS), and receives a commercial AC voltage (AC) of 110 to 220 V, and a predetermined level of DC voltage required to drive the LED ( DC), for example, 12V and 24V DC voltage is converted to output to the LED driving module 150.

The main power supply 110 may include a power efficiency correction unit for adjusting a phase of an input current to improve power efficiency for a commercial AC power source. The PFC circuit detects instantaneous power leakage and corrects the voltage supplied to the LED driver, thereby reducing unnecessary wasted power consumption. This improvement in power efficiency enables more LED modules to run at lower power.

The controller 140 includes a voltage detector 135 and a determiner 137.

The controller 140 detects a DC voltage output from the main power supply 110 and switches to supply a commercial AC voltage to the main power supply 110 when it is determined that the main power supply 110 operates normally. If it is determined that the module 140 is operating abnormally, and outputs a control signal for controlling the switching module 140 to supply the commercial AC voltage to the sub-power supply (120).

According to an embodiment, the controller 130 checks the life of the main power supply 110 by counting an operation time of the main power supply 110 using the time information provided from the timer 170 as a reference clock. If it is determined that the main power supply 110 has reached the end of its life according to a check result, a control signal for controlling the switching module 140 may be output to supply the commercial voltage to the sub power supply 120. have.

Here, whether the main power supply 110 has reached the end of its life is determined by the total time that the main power supply 110 converts the commercial AC voltage output from the switching module 120 into a DC voltage of a predetermined level and outputs it. It may be determined by comparing with a preset reference time.

The voltage detector 135 detects a DC voltage output from the main power supply 110 and outputs a detection signal. The determination unit 137 compares the detection signal output from the voltage detection unit 135 with a reference value, and when it is determined that the main power supply 110 operates normally according to the comparison result, the commercial AC voltage is supplied to the main power supply. The controller 110 outputs a control signal for supplying a commercial AC voltage to the sub power supply 120 when it is determined to be abnormally operated.

The switching module 140 continuously supplies the commercial AC voltage to the main power supply 110 to the control signal output from the controller 130 or the sub power supply device from the main power supply 110 to the commercial AC voltage. Change the supply to 120).

Each of the plurality of LED driving modules 150 further includes a voltage amplifier 155 according to an embodiment.

Each of the plurality of LED driving modules 150 receives a DC voltage output from the main power supply 110 or the sub power supply 120 so that a constant voltage is applied to the LED module 160. Apply a constant voltage to each.

The voltage amplifier 155 determines the drop of the DC voltage transmitted to the LED driving module 150, amplifies the constant voltage applied to the LED module 160 according to the degree of drop of the DC voltage, and applies it to the LED module 160. do.

The LED module 160 includes at least one LED device. LED module 160 is composed of a plurality of R (red), G (green), B (blue) LED lamps, each LED lamp is driven by receiving a constant current from the LED driving module 150 to output the illumination light.

The LED module 160 may be configured by modularizing each LED lamp by color and arranging them side by side on the panel. Alternatively, the LED module 160 may be configured by LED lamps of the same color or by mixing LED lamps of different colors.

4 is a block diagram illustrating an LED lighting control system according to another embodiment of the present invention.

Referring to FIG. 4, the LED lighting control system 200 includes a main power supply 210, a sub power supply 220, a switching module 230, an LED driving module 240, and an LED module 250. do.

The main power supply 210 includes a rectifier 211, a smoothing unit 212, a transformer 213, a control unit 214, and a timer 217.

The rectifier 211 rectifies a commercial AC voltage input from the switching module 230. That is, the rectifier 211 converts the input commercial AC voltage into a DC voltage using a diode rectifier or the like.

The smoothing unit 212 includes a capacitor or a circuit including the capacitor, and stores and smoothes the DC voltage output from the rectifying unit 211. At this time, the noise of the input line of the input commercial AC voltage is prevented from entering the main power supply 210, and the switching noise inside the main power supply 210 is transferred to the input line of the commercial AC voltage. A filter (not shown) for preventing the inflow may be further included.

The transformer 213 converts the DC voltage output from the smoothing unit 212 into a driving voltage and outputs the driving voltage.

The controller 214 includes a voltage detector 215 and a determiner 216.

The controller 214 senses the DC voltage output from the main power supply 210 and supplies the commercial AC voltage to the main power supply 210 when it is determined that the main power supply 210 operates normally. When it is determined that the switching module 230 operates abnormally, and outputs a control signal for controlling the switching module 230 to supply a commercial AC voltage to the sub-power supply device 220.

According to an embodiment, the LED lighting control system 200 further includes a timer 217, and the controller 214 uses the time information provided from the timer 217 as a reference clock to supply the main power supply 210. Check the operation time of the main power supply 210 by counting the operation time of the main power supply 110, if it is determined that the end of the life of the main power supply unit 110 to supply the commercial voltage to the sub-power supply 220 The control signal for controlling the switching module 230 may be output.

In addition, the controller 214 outputs a control signal for controlling the transformer 213 based on the voltage sensed by the voltage detector 215.

That is, when the main power supply 210 is operating normally, the controller 214 supplies a predetermined DC power (or a predetermined DC voltage) required by any device having the main power supply 210. In order to generate a control signal for converting the input commercial AC voltage to a predetermined DC voltage, and to control the transformer 213 based on the generated control signal.

The voltage detector 215 included in the controller 210 detects a voltage output from the main power supply 210 and outputs a detection signal. The determination unit 216 compares the detection signal output from the voltage detection unit 215 with a reference value, and if it is determined that the main power supply 210 operates normally according to the comparison result, the commercial AC voltage is supplied to the main power supply device. The controller 210 outputs a control signal for supplying power to the sub-power supply device 220 when it is determined to be abnormally operated.

The sub power supply 220 has the same configuration and operation as the main power supply 110 or the sub power supply 120 shown in FIG. 3, and the sub power supply 220 generally has a switching mode power (SMPS). It is composed of a supply) and receives a commercial AC voltage (AC) of 110 ~ 220V usually converted to a predetermined level of DC voltage (DC), for example, 12V and 24V DC voltage required for LED driving and output to the LED driver 120. .

The switching module 230, the LED driving module 240, and the LED module 250 have the same configuration and operation as the LED lighting control system 100 shown in FIG. 3, and a description thereof will be omitted.

5 is a flowchart illustrating a control method of the LED lighting control system according to an exemplary embodiment of the present invention.

3 and 5, the switching module 140 outputs the input commercial AC voltage (S510).

The main power supply 110 converts the commercial AC voltage output from the switching module 140 into a DC voltage of a predetermined level and outputs the converted AC voltage (S520).

The control unit 130 detects the DC voltage output from the main power supply device 110 to determine whether the main power supply device 110 operates normally. As a result, the main power supply device 110 operates normally. When it is determined, the switching module 140 is controlled to supply the commercial AC voltage to the main power supply 110, and when it is determined to be abnormally operated, to supply the commercial AC voltage to the sub power supply 120. The control signal for controlling the switching module 140 is output (S530).

According to an embodiment, the controller 110 receives the time information from the timer 170 and counts the operation time of the main power supply 110 by using the time information provided from the timer 170 as a reference clock. The switching to check the life of the main power supply 110 and to supply the commercial AC voltage to the sub power supply 120 when it is determined that the main power supply 110 has reached the end of the life according to the check result The control signal for controlling the module 140 may be output.

The switching module 140 supplies the commercial AC voltage to the main power supply device 110 or the sub power supply device 120 according to a control signal output from the controller (S540 and S550).

The main power supply 110 or the sub power supply 120 converts the commercial AC voltage into the DC voltage of the predetermined level and outputs the converted AC voltage (S560 and S570).

The plurality of LED driving modules 150 receives a DC voltage output from the main power supply 110 or the sub power supply 120 so that a constant current is applied to the LED elements constituting the plurality of LED modules 160. A constant voltage is applied to each of the LED modules 160 to drive the LED modules 160.

Each of the plurality of LED driving modules 150 further includes a voltage amplifying unit 155, and a direct current in which the voltage amplifying unit 155 included in each of the plurality of LED driving modules 150 is transmitted to the LED driving module 150. The voltage drop may be determined to amplify a constant voltage applied to the LED module 160 according to the degree of drop of the DC voltage, and apply the amplified voltage to the plurality of LED modules 160. Since the voltage amplifier 155 amplifies the constant voltage according to the degree of drop of the DC voltage and applies it to the plurality of LED modules 160, the brightness of the entire LED lighting can be maintained uniformly.

According to an embodiment, the LED lighting control system 100 according to an embodiment of the present invention uses the time information received from the timer 170 by the control unit 130 as a reference clock by using the time information provided from the timer 170. Counting the operating time of the main power supply 110 to check the life of the main power supply 110 and the switching module 140 to supply the commercial AC voltage to the sub power supply 120 according to the check result The method may further include outputting a control signal for controlling. That is, when the control unit 130 checks the life of the main power supply 110 and determines that the life span has expired, the control module 130 supplies the commercial AC voltage to the sub power supply 120. It can output the control signal to control.

In the LED lighting control system according to an exemplary embodiment of the present disclosure, for the convenience of description, the case where there is one sub power supply device 120 or 220 has been described, but may be two or more. In addition, in the embodiment of the present invention, the case of controlling the LED modules 160 and 250 by the constant voltage method has been described, but it will be understood that the technical spirit of the present invention is equally applied to the LED module controlled by the constant current method.

On the other hand, the embodiments of the present invention disclosed in the specification and drawings are merely presented specific examples to easily explain the technical contents and help the understanding of the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

100, 200: LED light control system
110, 210: main power supply
120, 220: sub power supply
130, 214: control unit
140, 230: switching module
150, 240: LED drive module
155: voltage amplifier
160, 240: LED module
170, 217: timer

Claims (10)

delete delete delete delete delete delete Outputting a commercial AC voltage input by the switching module;
Converting the commercial AC voltage output from the switching module into a DC voltage of a predetermined level by a main power supply device or a sub power supply device;
A control unit detecting the DC voltage output from the main power supply device, determining whether the main power supply device is normally operated, and outputting a control signal according to a determination result;
Supplying the commercial AC voltage to the main power supply or the sub power supply by the switching module according to the control signal output from the controller;
Converting, by the main power supply or the sub power supply, the commercial AC voltage into the DC voltage and outputting the DC voltage; And
And a plurality of LED driving modules receiving the DC voltage output from the main power supply device or the sub power supply device and applying a rated voltage to each of the plurality of LED modules.
Outputting the control signal,
The controller controls the switching module to supply the commercial AC voltage to the main power supply when it is determined that the main power supply is normally operated by detecting the DC voltage output from the main power supply. The control method of the LED lighting control system for outputting a control signal for controlling the switching module to supply the commercial AC voltage to the sub power supply when it is determined that the abnormal operation. delete The method of claim 7, wherein
Applying a rated voltage to each of the plurality of LED modules,
The voltage amplification unit included in each of the plurality of LED driving modules determines a drop of the DC voltage transmitted to each of the plurality of LED driving modules to amplify a rated voltage applied to the LED module according to the degree of drop of the DC voltage. The control method of the LED lighting control system further comprising the step of applying to the plurality of LED modules. The method of claim 7, wherein
In the control method of the LED lighting control system, the control unit receives time information from a timer and counts an operation time of the main power supply by using the time information provided from the timer as a reference clock. Checking a life and outputting a control signal for controlling the switching module to supply the commercial AC voltage to the sub power supply when the main power supply is determined to have reached the end of life according to a check result; LED lighting control system control method.

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