KR102003231B1 - Light driving apparatus and driving method thereof - Google Patents

Abstract

The present invention relates to a light driving device that can be used in common to various types of dimmers and a driving method thereof, the driving unit for supplying a driving power to the illuminator under control to drive the illuminator; And a general-purpose dimming control unit for converting a range of a brightness control signal of an external dimmer into a first voltage range according to a preset ratio, thereby controlling dimming by controlling power supply of the driving unit. Suggest.

Description

LIGHT DRIVING APPARATUS AND DRIVING METHOD THEREOF}

The present invention relates to a lighting driving device that can use various kinds of dimmers and a driving method thereof.

In general, in a certain area of the building, offices, rooms and classrooms, lighting is installed for the user to use the corresponding area.

In such lighting, incandescent lamps and fluorescent lamps are mainly used, and in recent years, light emitting diodes (LEDs) replace incandescent lamps and fluorescent lamps due to advantages such as power consumption and usage time.

On the other hand, as a driving device for driving the above-described illumination, not only the switch on / off of the illumination, but also a dimmer to adjust the brightness as described in the following prior art document can be used.

However, these dimmers are generally source dimmers or sink dimmers, and their dimming methods may vary, and in the case of sink dimmers, the characteristic values may vary depending on the manufacturer. There is this difficult problem.

In particular, since the above-described dimmer is mainly already installed in the ceiling or wall of a building, office, house, etc., there is a problem in that it is difficult to change or replace and detect and apply a driving device suitable for the method or characteristic every time. .

United States Patent Application Publication No. 2012-0256558

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems, and the present invention proposes a lighting driving apparatus and a driving method thereof that can be commonly used in various types of dimmers.

In order to solve the above-mentioned problems of the present invention, one technical aspect of the present invention includes a driving unit for driving the lighting unit by supplying a driving power to the lighting unit under control; And a general-purpose dimming control unit for converting a range of the brightness control signal of the external dimmer into a first voltage range according to a preset ratio, thereby controlling power supply of the driving unit to control dimming.

According to one technical aspect of the present invention, the general-purpose dimming control unit may convert the voltage range or impedance range of the brightness control signal of the external dimmer into the first voltage range.

According to one technical aspect of the present invention, the general-purpose dimming control unit includes: a voltage converter configured to convert a voltage range or an impedance range of the brightness control signal of the external dimmer into the first voltage range; And a controller configured to recognize a type of a corresponding dimmer according to a first voltage range from the converter and provide a dimming signal according to the brightness control signal.

According to one technical aspect of the present invention, the control unit includes a recognition unit for recognizing the type of the corresponding dimmer by comparing the first voltage range from the conversion unit with a voltage range of a preset lookup table; And a dimming controller configured to provide a dimming signal according to the brightness control signal according to the type of the dimmer by the recognition unit.

According to one technical aspect of the present invention, the dimming controller may control the dimming of the lighting body by controlling current information of the lighting body detected by the driving unit.

According to one technical aspect of the present invention, the illuminator may be at least one light emitting diode.

According to one technical aspect of the present invention, the driving unit comprises a power factor correction unit for correcting the power factor by switching the input power; And a DC / DC converter converting the DC power from the power factor corrector into the driving power under the control.

According to one technical aspect of the present invention, the driving unit may further include a filter unit for rectifying and smoothing AC power and removing electromagnetic interference.

According to one technical aspect of the present invention, the DC / DC converter comprises a converter for switching the DC power from the power factor correction unit to the driving power according to a feedback signal; And a feedback unit configured to detect a current flowing in the illuminator and provide it to the converter.

In order to solve the above problems of the present invention, another technical aspect of the present invention includes the steps of reading the type of dimmer used previously; And converting the range of the brightness control signal into a first voltage range according to a preset ratio, and controlling the power supply of the illuminator to control the dimming of the illuminator. will be.

According to another technical aspect of the present invention, the controlling of the dimming may include setting a dimming range of the dimmer in a preset lookup table; Acquiring data of the connected dimmer; Comparing whether the acquired dimmer data is larger than the maximum value or smaller than the minimum value of the set dimming range; And controlling the dimming of the illuminator by changing a dimming range or outputting dimming data according to the comparison result.

According to another technical aspect of the present invention, the method may further include recording the changed dimming range.

According to the present invention, a dimming range is determined according to a voltage value or a dimming range is set to a first voltage range by setting a range of brightness control signals from various types of dimmers according to an impedance value to a dimmer having various characteristic values. There is an effect that can be used in common.

1 is a schematic configuration diagram of a lighting drive device of the present invention.
2A and 2B are tables showing types of dimmers and characteristic values thereof.
3 is a schematic configuration diagram of a general-purpose dimming control unit employed in the lighting driving device of the present invention shown in FIG.
4 is a flowchart showing a method of driving the light driving device of the present invention.
5A to 5D are graphs showing dimming control results of various types of dimmers by the lighting driving apparatus of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

However, in describing the preferred embodiment of the present invention in detail, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In addition, the same or similar reference numerals are used throughout the drawings for parts having similar functions and functions.

In addition, throughout the specification, when a part is 'connected' to another part, this includes not only 'directly connected' but also 'indirectly connected' with another element in between. do.

Also, "including any component" means that other components may be further included, unless specifically stated otherwise.

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

1 is a schematic configuration diagram of a light driving device of the present invention.

Referring to FIG. 1, the lighting driving apparatus 100 of the present invention may include a driving unit 110 and a general dimming control unit 120.

The driving unit 110 supplies driving power to the illuminator A to enable the illuminator A to emit light, and the illuminator A may be at least one light emitting diode (LED). have.

The driving unit 110 may control the brightness of the illuminator A by controlling the supply of driving power supplied to the illuminator A.

To this end, the driving unit 110 may include a filter 111, a power factor correction unit 112, and a DC / DC converter 113.

The filter unit 111 may rectify and smooth the input AC power, and in addition, remove the electromagnetic interference and transmit the electromagnetic power to the power factor correcting unit 112.

The power factor correcting unit 112 may correct the power factor by correcting the phase difference between the voltage and the current by switching the rectified power source, and may further correct the power factor by adjusting the waveform of the current to estimate the waveform of the voltage.

The DC / DC converter 113 may switch the power factor corrected DC power from the power factor corrector 112 to convert the DC power to the driving power, and then supply the converted power to the illuminator A. FIG. In this case, the power level of the driving power source may vary according to control.

The general dimming controller 120 may control the power level of the driving power of the DC / DC converter 113 according to the brightness control signal from the external dimmer B.

On the other hand, the external dimmer (B) may have a variety of types.

2A and 2B are tables showing types of dimmers and characteristic values thereof.

2A and 2B, a dimming method of a dimmer may include a source dimming method using a voltage and a sink dimming method using an impedance, and the sink dimming method has various impedance ranges. Can be.

That is, as illustrated in FIG. 2A, when the dimming range is set to 100% to 10% in the case of the source dimmer, a corresponding voltage value may be set to 10V to 1V.

On the other hand, as shown in FIG. 2B, the sink dimmer may have various impedance settings as the first to third sink dimmers according to the manufacturer, and even if the dimming ratio is set to 100% to 10%, the impedance is 257Kohm ~. 84Kohm, 200Kohm ~ 52Kohm, 120Kohm ~ 32Kohm can be set differently.

3 is a schematic configuration diagram of a general-purpose dimming control unit employed in the lighting driving apparatus of the present invention shown in FIG. 1.

Referring to FIG. 3 together with FIG. 1, as described above, in order to universally use the lighting driving apparatus of the present invention in various types of dimmers, the general-purpose dimming controller includes a voltage converter 121 and a controller 122. can do.

The voltage converter 121 may convert a range of brightness control signals from various types of dimmers, such as the first to Nth dimmers, into a preset first voltage range. In this case, since the brightness control signal of the source dimmer has voltage information, the brightness control signal of the source dimmer may be converted into a first voltage range recognizable by the controller. It can be converted to the first voltage range that can be recognized by.

The controller 122 may include a recognizer 122a and a dimming controller 122b.

The recognition unit 122a may recognize the type of the corresponding dimmer by comparing the first voltage range from the voltage converter 121 with a voltage range of a preset lookup table.

The dimming controller 122b may provide the dimming signal according to the brightness control signal to the DC / DC converter 113 according to the type of the dimmer by the recognizer 122a.

The DC / DC converter 113 may include a converter 113a and a feedback unit 113b, and the converter 113a switches the DC power from the power factor correcting unit 112 according to the feedback signal. It can be converted into a driving power source, and the feedback unit 113b can detect a current flowing through the illuminator A and provide it to the converter 113a.

That is, the converter 113a may control the power level of the driving power according to the feedback current information of the detection signal, and the dimming controller 122b detects the feedback from the feedback unit 113b to the converter 113a. The brightness of the illuminator A may be controlled by controlling the current information of the signal to control the power level of the driving power supplied to the illuminator A.

4 is a flowchart showing a method of driving the light driving device of the present invention.

Referring to FIG. 4, the operation of the general-purpose dimming control unit 120 illustrated in FIG. 3 will be described in more detail.

First, the general dimming control unit 120 may read the type of the previously used dimmer stored in the lookup table (S10).

Thereafter, the dimming of the illuminator may be controlled by converting the range of the brightness control signal from the connected dimmer into the first voltage range according to a preset ratio, thereby controlling the power supply of the illuminator (S20 to S70).

In more detail, controlling the dimming of the illuminator (S20 to S70) sets the dimming range of the dimmer to a preset lookup table (S20), and acquires data of the connected dimmer (S30). After comparing the data of one dimmer is greater than the maximum value of the set dimming range, or smaller than the minimum value (S40); According to the comparison result, the dimming range may be changed (S50) or the dimming data may be output to control the dimming of the illuminator (S60).

If the dimming range is changed, the changed dimming range may be recorded (S70).

5A to 5D are graphs illustrating dimming control results of various types of dimmers by the lighting driving apparatus of the present invention.

5A to 5D, as shown in FIG. 5A, dimming control is performed at 10% to 100% in the case of a source dimmer.

Similarly, as shown in FIGS. 5B, 5C, and 5D, the dimming control may be smoothly performed at 10% to 100% even in the case of the first, second, and third sink dimmers.

As described above, according to the present invention, a dimmer having various characteristic values may be determined by determining a dimming range according to a voltage value or by setting a dimming range as a first voltage range by setting a range of brightness control signals from various types of dimmers according to impedance values The lighting drive can be used in common.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, but is defined by the claims below, and the configuration of the present invention may be modified in various ways without departing from the technical spirit of the present invention. It will be apparent to those skilled in the art that the present invention may be changed and modified.

100: lighting driving device
110: drive unit
111: filter unit
112: power factor correction unit
113: DC / DC converter
113a: converter
113b: Feedback section
120: general purpose dimming control unit
121: voltage converter
122: control unit
122a: recognition unit
122b: dimming control unit

Claims (8)

In the light driving device receiving a brightness control signal from the dimmer,
A driving unit for supplying driving power to the illuminator to drive the illuminator; And
A voltage converter converting a voltage range or an impedance range of the brightness control signal input from the dimmer into a first voltage range according to a preset ratio, and the dimmer according to the first voltage range converted by the voltage converter. And a controller for recognizing a dimmer type among a plurality of sink dimmers having various source or impedance settings, and controlling a dimming of the illuminator by controlling a driving power supply of the driving unit according to the brightness control signal. A general dimming control unit;
Including,
The controller may be configured to recognize the type of the dimmer by comparing the converted first voltage range with a voltage range of a preset lookup table and which sink dimmer is a source dimmer using a voltage or a sink dimmer using an impedance. And a dimming controller configured to control the dimming of the illuminator by varying a power level of the driving power according to the brightness control signal according to the type of dimmer recognized by the recognition unit.
delete The method of claim 1,
And the dimming controller controls the current information of the illuminator detected by the driver to vary the power level of the driving power.
The method of claim 1,
And the illuminator is at least one light emitting diode.
The method of claim 1, wherein the driving unit:
A power factor correction unit configured to correct power factor by switching an input power source; And
A DC / DC converter converting DC power from the power factor corrector into driving power and supplying the DC power to the illuminator;
Lighting driving device comprising a.
The method of claim 5, wherein the drive unit:
A filter unit for rectifying and smoothing AC power and removing electromagnetic interference;
Lighting driving device further comprising.
Converting a potential range or an impedance range of the brightness control signal input from the dimmer into a first voltage range according to a preset ratio;
Recognizing a dimmer type among a plurality of sink dimmers having various source settings or impedances according to the first voltage range; And
Controlling dimming of an illuminator according to the brightness control signal according to the recognized type of dimmer;
Including,
The step of recognizing the dimmer type may include comparing the first voltage range with a voltage range of a preset lookup table and recognizing the type of the dimmer whether the dimmer is a source dimmer using a voltage or a sink dimmer using an impedance. Lighting driving method.
delete

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