KR20100115028A - Lighting control apparatus and its method - Google Patents

Abstract

The present invention performs lighting adjustment of a natural or linear effect by using a lighting control device. To this end, the present invention, unlike the conventional method of adjusting the lighting by adjusting the number of lamps of the lighting device, fades during lighting adjustment By dimming or adjusting the lighting according to visibility adjustment information, fade dimming lighting adjustment can provide a natural lighting change, and lighting adjustment according to visibility adjustment information can provide a linear lighting change. It can be.

Description

LIGHTING CONTROL APPARATUS AND ITS METHOD}

The present invention relates to a control technique of a lighting device, and more particularly, to a lighting control device and a method suitable for controlling lighting for a natural light change or a linear light change using the lighting device.

As is well known, a light-emitting diode (LED) is made of a PN junction structure using a semiconductor, and light emission is directly converted into energy of light of electrons in the PN junction, which is injected from the electrode into the semiconductor. Electrons and holes flow through different energy bands (conducting bands or valence bands) and recombine over the band gap near the PN junction, and when recombining, a considerable amount of energy is emitted to the band gap as photons, or light, to emit light.

Unlike most other light sources such as fluorescent or incandescent light emitting diodes (LEDs), they can be used to light UV-sensitive cultural assets, works of art, or objects that are reluctant to heat because they can easily obtain light that does not contain unnecessary ultraviolet or infrared rays. The response to the input voltage is fast, so it is also used for communication, and when used as a light, the maximum light intensity can be obtained as soon as the light is turned on.

On the other hand, in a lighting device using a light emitting diode, the light is turned on / off through an on / off switch. When the on switch is input according to the fast response characteristic of the light emitting diode, the light is immediately turned on at the maximum light intensity, and the off switch is As soon as the input is turned off, the lighting is turned off. In order to adjust the brightness of the lighting, the brightness of the lighting can be adjusted by adjusting the number of lamps included in the lighting.

The instantaneous change of LED lighting having fast response characteristics in the lighting device as described above has a problem of giving an unnatural feeling to the human eye, and the unambiguous change of lighting is felt in the lighting section according to the visibility of the lighting. There is a problem.

Accordingly, the present invention is to provide a lighting control device and method that can provide a natural lighting change by adjusting the brightness of the lighting in a fade-dimming method.

In addition, the present invention is to provide a lighting control device and method that can provide a linear change in the illumination by changing the illumination to the adjustment value according to the visibility of the light change interval.

In one aspect, the present invention provides a control unit for providing at least one lighting control signal of a fading-dimming lighting adjustment control signal and the lighting adjustment control signal according to the visibility adjustment information upon input of the lighting adjustment signal; And an LED driver for driving an LED light source according to the at least one illumination adjustment control signal provided, and a power supply unit for supplying power to the LED light source according to the generated power adjustment control signal. do.

In another aspect, the present invention, at least any one of the step of checking the input of the illumination adjustment signal, and when the illumination adjustment signal is input, a fading-dimming illumination adjustment signal and the illumination adjustment signal to which the visibility adjustment information is applied. It provides a lighting control method comprising the step of providing a lighting adjustment control signal, and performing the lighting adjustment according to the at least one lighting adjustment signal provided.

The present invention, unlike the conventional method of adjusting the lighting by adjusting the number of lamps of the lighting device, by adjusting the lighting according to the fading dimming method or adjusting the lighting according to the visibility adjustment information when adjusting the lighting, Through this, it is possible to provide a natural light change, and through the light adjustment according to the visibility adjustment information, it is possible to provide a linear light change that can feel the same brightness change in the light change section.

The present invention is to provide a lighting adjustment control signal of the fading dimming method or the illumination adjustment information according to the DMX512 protocol when the illumination adjustment signal is input, through the technical means to solve the problems in the prior art Can be.

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

1 is a block diagram of a lighting control device suitable for providing a natural lighting change or a linear lighting change according to an exemplary embodiment of the present invention, and includes a power supply 102, a controller 104, an LED driver 106, and an LED light source. 108, the communication module unit 110, and the like.

Referring to FIG. 1, the power supply unit 102 includes a SMPS that protects a circuit from surge voltage and lightning, and converts an alternating current into a direct current. The control unit 104 and the LED driving unit ( 106) to supply the DC power source according to the preset power level to the LED light source 108, the communication module unit 110, etc., and to supply the adjustment level power according to the power adjustment signal provided during the lighting adjustment to the LED light source 108. And so on.

In addition, the controller 104 performs an overall operation control of the lighting apparatus, including a microprocessor, for example, and receives a DC power from the power supply 102 to control the LED driving of the PWM method according to a preset power level. When the illumination adjustment signal is input while the illumination is provided by providing a signal, the illumination according to the fading-dimming illumination adjustment control signal or the visibility adjustment information according to the DMX512 protocol transmitted through the communication module unit 110. It provides a control control signal and a drive control signal corresponding to each of the LED driver 106, and the like.

Herein, the control unit 104 provides a fading dimming lighting adjustment control signal. When the lighting adjustment signal is input, the lighting adjustment control signal for sequentially changing the current lighting value to a target lighting value corresponding to the corresponding lighting adjustment signal. And corresponding driving control signals to the LED driver 106, respectively.

For example, the lighting will have a staged lighting value from 0 to 255 according to the DMX512 protocol. If the current lighting value is 10% and the target lighting value is 20%, then the target lighting value is at the current lighting value '25 / 255 '. LED lighting control signal corresponding to '25 / 255, 26/255, 27/255, ..., 49/255, 50/255 'respectively. It may be provided to the drive unit 106.

In addition, the control unit 104 provides an illumination adjustment control signal according to the visibility adjustment information. The human eye does not have the same sense of brightness due to the photo-stimulation of the same energy, so that it is felt according to a luminance curve indicating this. Accordingly, since the change in brightness in the dark portion is relatively large and the change in brightness in the bright portion is relatively small with respect to the linear change of illumination, when the illumination adjustment signal is input, The LED driver 106 provides an illumination adjustment control signal to which the visibility sensitivity formula is applied and a driving control signal corresponding thereto.

For example, if the target lighting value is X and the luminous lighting value that a person feels is Y, the brightness of the luminous lighting value is logarithmic, and the luminous adjustment value felt when adjusting the lighting is X ⁿ (where n Can be expressed as a real number larger than 1), and when the lighting adjustment signal is input, the lighting adjustment signal is applied to the target lighting value by substituting the corresponding lighting value into the lighting expression. The control signal may be provided to the LED driver 106.

Next, the LED driver 106 includes, for example, an LED driver, and outputs a drive signal corresponding to the drive control signal transmitted from the controller 104 to the LED light source 108 to drive the LED signal. 108 generates light by receiving power from the power supply unit 102 according to the driving control.

In addition, the LED driver 106 outputs a fade dimming illumination adjustment control signal provided from the controller 104 or a driving signal according to the illumination adjustment control signal according to the visibility adjustment formula to the LED light source 108. To perform.

Next, when the lighting on signal is input from the lighting control device having the above-described configuration, the power is turned on by supplying power according to a preset power level, and when the lighting adjustment signal is input, the lighting adjustment signal of the fade dimming method is input. And a process of adjusting lighting by fading dimming by providing a corresponding LED driving control signal.

2 is a flowchart illustrating a process of adjusting lighting by a fade dimming method according to an embodiment of the present invention.

Referring to FIG. 2, in the standby mode of the lighting control apparatus (step 202), the controller 104 checks whether an illumination on signal is input through an input unit, for example, a power switch, not shown (step 204). .

As a result of the check in the step 204, when the illumination on signal is input, the controller 104 provides a PWM drive control signal of the PWM method to the LED driver 106, the LED driver 106 in the power supply unit 102 Using the power supplied according to the preset power level from the by providing an illumination driving signal corresponding to the LED driving control signal to the LED light source 108 to turn on the illumination (step 206).

Then, the controller 104 checks whether an illumination adjustment signal is input through, for example, a power switch or the like (step 208).

As a result of the check in the step 208, when the illumination adjustment signal is input, the controller 104 LED control unit 106 to the illumination adjustment control signal to sequentially change the current illumination value up to the target illumination value corresponding to the illumination adjustment signal. ), And the LED driver 106 provides a fade dimming lighting adjustment driving signal to the LED light source 108 according to the power supplied from the power supply 102 to adjust the illumination (step 210).

Here, the fade dimming method will be described in detail. When the current illumination value is 10% and the target illumination value is 20%, the current illumination value is adjusted from '25 / 255 'to the target illumination value '50 / 255'. By adjusting the lighting by fading dimming by providing a lighting adjustment control signal corresponding to the lighting adjustment control signal '25 / 255, 26/255, 27/255, ..., 49/255, 50/255 ', You can get natural lighting without flickering.

Therefore, when the illumination control signal is input to the illumination control device, by adjusting the illumination in a fade dimming manner to have a sequential illumination change to the target illumination value, it is possible to provide a natural lighting effect.

Next, when the lighting on signal is input from the lighting control device having the above-described configuration, the lighting is supplied by supplying power according to a preset power level, and when the lighting adjustment signal is input, the lighting adjustment to which the visibility adjustment information is applied. The process of adjusting the lighting by providing a control signal will be described.

3 is a flowchart illustrating a process of adjusting lighting according to visibility adjustment information according to another embodiment of the present invention.

Referring to FIG. 3, in the standby mode of the lighting control apparatus (step 302), the controller 104 checks whether an illumination on signal is input through an input unit (not shown), for example, a power switch, etc. (step 304). .

As a result of the check in step 304, when the lighting on signal is input, the controller 104 provides a PWM driving control signal of a PWM method to the LED driver 106, and the LED driver 106 supplies the power supply 102. Using the power supplied from the power level set from the predetermined level, the illumination driving signal corresponding to the LED driving control signal is provided to the LED light source 108 to turn on the illumination (step 306).

Then, the controller 104 checks whether an illumination adjustment signal is input through, for example, a power switch or the like (step 308).

As a result of the check in the step 308, when the illumination adjustment signal is input, the controller 104 provides an illumination adjustment control signal applying the visibility equation to the LED driver 106 for the change section of the illumination, LED driver 106 ) Provides illumination adjustment driving signals to which the visibility adjustment information according to the visibility equation is applied to the LED light source 108 according to the power supplied from the power supply 102 to adjust the illumination (step 310).

Herein, the application of the visibility adjustment information will be described in detail. When the illumination adjustment signal is input, the visibility adjustment value for the target adjustment value may be represented by X ⁿ (where n is a real number greater than 1), and such visibility equation By providing the illumination adjustment control signal applying the visibility adjustment information according to, it is possible to perform a linear illumination adjustment that can feel the same brightness change in the change interval. For example, as shown in FIG. 4, the light intensity (pink line) is improved compared to the conventional light intensity (blue line), and as shown in FIG. 5, the existing visual visibility (blue line) is shown. It can be seen that compared to the naked eye visibility (pink line).

Therefore, when an illumination adjustment signal is input to the illumination control device, the illumination adjustment value is calculated according to the visibility adjustment information, and the illumination is adjusted by applying the calculated illumination adjustment value to the change interval of illumination, thereby adjusting the same brightness in the change interval of illumination. It can provide a change.

Meanwhile, in the above-described embodiments of the present invention, the lighting control according to the fade dimming method or the lighting adjustment according to the visibility adjustment information has been described, respectively, but the lighting adjustment according to the fade dimming method and the visibility adjustment information may be simultaneously performed. Of course. That is, the lighting adjustment may be performed by at least one of the fading dimming method and the lighting adjustment according to the visibility adjustment information.

In the foregoing description, various embodiments of the present invention have been described and described. However, the present invention is not necessarily limited thereto, and a person having ordinary skill in the art to which the present invention pertains can make various changes without departing from the technical spirit of the present invention. It will be readily appreciated that branch substitutions, modifications and variations are possible.

1 is a block diagram of a lighting control device suitable for providing a natural lighting change or a linear lighting change according to an embodiment of the present invention;

2 is a flowchart illustrating a process of adjusting lighting by a fade dimming method according to an embodiment of the present invention;

3 is a flowchart illustrating a process of adjusting lighting according to visibility adjustment information according to another embodiment of the present invention;

4 is a view showing the existing brightness and the improved brightness when adjusting the visibility according to an embodiment of the present invention,

5 is a view showing an existing visibility and improved visibility when adjusting the visibility according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

102: power supply unit 104: control unit

106: LED driver 108: LED light source

110: communication module

Claims (8)

A control unit for providing at least one of a fading-dimming lighting adjustment control signal and an illumination adjustment control signal according to visibility adjustment information when an illumination adjustment signal is input; An LED driver for driving an LED light source according to the at least one illumination adjustment control signal provided; A power supply unit supplying power to the LED light source according to the generated power adjustment control signal Lighting control device comprising a. The method of claim 1, The control unit, the illumination control device for providing each of the illumination adjustment control signals corresponding to the stepped illumination value of the DMX512 protocol from the current illumination value to the target adjustment value for the fade dimming lighting adjustment. The method of claim 1, The control unit is configured to calculate the luminous lighting value for a target adjustment value for applying the visibility adjustment information and provide the illumination adjustment control signal corresponding thereto. The method of claim 3, wherein The control unit calculates the luminous adjustment value with respect to the target adjustment value according to X ⁿ (where n is a real number larger than 1 and X is the target adjustment value). Checking the input of the illumination adjustment signal; When the illumination adjustment signal is input, providing at least one illumination adjustment control signal among a fade-dimming illumination adjustment signal and an illumination adjustment signal to which visibility adjustment information is applied; Performing illumination adjustment in accordance with the provided at least one illumination adjustment signal. Lighting control method comprising a. The method of claim 5, The providing of the at least one illumination adjustment signal may include providing each of the illumination adjustment control signals corresponding to the stepwise illumination values of the DMX512 protocol from the current illumination value to the target adjustment value for the fade dimming illumination adjustment. Lighting control method. The method of claim 5, The providing of the at least one illumination adjustment signal may include calculating an illumination illumination value with respect to a target adjustment value for applying the visibility adjustment information and providing the illumination adjustment control signal corresponding thereto. The method of claim 7, wherein Providing the at least one illumination adjustment signal, the illumination to calculate the luminous adjustment value for the target adjustment value according to X ⁿ (where n is a real number greater than 1, X is the target adjustment value) Control method.

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