KR101484963B1 - Dimming Control Apparatus For LED Stage Lighting System Using Hybrid Control Mode - Google Patents

Abstract

The present invention relates to an apparatus for controlling a luminance of an LED stage lighting, which uses a hybrid control scheme selectively using a phase control scheme and a digital control scheme. The apparatus includes: an LED lamp module; an AC phase control module to control and output a phase of an AC power by moving a driving time point of a triac based on a zero-crossing point of an AC neutral line such that a luminance of the LED lamp module is controlled; an LED lamp drive module to rectify and smooth an input power of the AC phase control module to apply the rectified and smoothed input power to the LED lamp module; a DMX512 receiving module to receive lamp control information transmitted by an outside manager such that the luminance of the LED lamp module is controlled; and a lamp driving control module to control the luminance of the LED lamp module by controlling the LED lamp driving module according to the lamp control information received by the DMX512 receiving module when the phase is not actually controlled by the AC phase control module.

Description

TECHNICAL FIELD [0001] The present invention relates to an illumination control apparatus for a stage illumination system using a hybrid control method,

[0001] The present invention relates to an illumination control system for an LED stage lighting system using a hybrid control system, and more particularly, to a hybrid control system for controlling the illuminance of an LED lamp by selectively using a phase control system and a digital control system And more particularly, to an illuminance control apparatus for a stage illumination system using an LED.

In general, a white light lamp such as a halogen lamp installed to enhance a visual effect of a stage device in a broadcasting station or a venue can be configured to control the brightness of light by a phase control method. As a typical example of such a control method, a plurality of illuminance controllers (L1, L2, ..., Ln) for individually illuminating the plurality of white illumination lamps installed on a photographic set or stage are provided as shown in FIG. Each of the illumination controllers L1, L2, ..., Ln connects the driver 20 between the AC phase control module 10 and the white illumination lamp 30 so that the AC phase control module 10 It is possible to control the illuminance of the white illumination lamp 30 by the driver 20, by controlling the phase of the input AC power according to the brightness.

In order to solve the problem of excessive power consumption due to low energy efficiency of a white lighting lamp such as a halogen lamp, an LED lamp is adopted as a light source of a stage lighting system and a technique of adjusting the illuminance by a digital control method is being developed. 2, a plurality of DMX splitters 51, 52, 53 and 54 are connected to the DMX console 40 via a communication line, and a plurality of DMX splitters 51, 52, 53 and 54 are connected to the respective DMX splitters 51, 52, 53 and 54 The DMX console 40 controls ON, OFF, and illuminance adjustment of the LED lamp 60 using the DMX 512 protocol, which is an international standard, by wiring the multi-LED lamp 60.

As the stage illumination device becomes larger, it takes a great deal of cost to apply the digital control method which can be remotely controlled when the device is installed in a wide range. Also, there is a problem in that the operation of the LED lamp is inevitably dependent on the DMX console even if the individual settings are required because the illuminance of the LED lamp installed in each site is temporarily or unnecessarily required.

Therefore, there is a demand for a technique for controlling the illuminance of an LED lamp by a phase control method using an AC phase control controller in the field and controlling an LED lamp by a digital control method using a DMX console for remote control.

[Patent Document 1] Korean Patent No. 10-1293465

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One aspect of the present invention provides an LED lamp as a light source for a stage lighting, and can adjust the illuminance of an LED lamp by selectively applying a phase control method and a digital control method, Is to adjust the illuminance of the LED lamp remotely.

An apparatus for controlling illumination of an LED stage light using a hybrid control method according to an embodiment of the present invention includes an LED lamp module; An AC phase control module for controlling a phase of an AC power source by driving a driving point of a triac on the basis of a zero cross of an AC neutral line in order to adjust an illuminance of the LED lamp module; An LED lamp driving module for rectifying and smoothing an input power of the AC phase control module and applying the rectified and smoothed input power to the LED lamp module; A DMX 512 receiving module for receiving lamp control information transmitted by an external manager to adjust the illuminance of the LED lamp module; A lamp driving control module controlling the LED lamp driving module according to the lamp control information received by the DMX512 receiving module to control the illuminance of the LED lamp module when phase control is not substantially performed in the AC phase control module; And a control unit.

The lamp driving module includes a protection circuit, an EMI filter and a bridge rectifier. The lamp driving control module includes a phase detector for detecting a phase of a power source rectified by the bridge rectifier and outputting a detection signal of a square wave, And a microcomputer for determining a phase control operation in the AC phase control module according to a detection signal of the rectangular wave detected by the phase detection unit.

The lamp driving control module may further include a first photocoupler for transmitting a driving control signal of the microcomputer to the PWM driving unit of the LED lamp driving module and a second photocoupler connected between the phase detecting unit and the micom .

The first setter may further include a first setter and a second setter for setting the illuminance of the user on the spot where the LED lamp module is installed, And the second setter applies a DC level illumination setting value to the micom according to the operation of the rotary knob.

In addition, the micom may ignore the remote illumination setting method using the DMX 512 receiving module, if the phase is being controlled as a result of the determination in accordance with the detection signal of the phase detector.

The microcomputer may apply a drive control signal to the PWM driver through the first photocoupler if the phase of the PWM signal is not controlled according to the detection signal of the phase detector.

In addition, the LED lamp driving module may further include a flicker prevention circuit connected to a rear end of the bridge rectifier, wherein the flicker prevention circuit adjusts the on time of the thyristor by setting a time constant determined by a resistor and a capacitor, Thereby preventing a flicker phenomenon occurring in the module.

As described above, according to the present invention, in addition to the method of adjusting the illuminance of the LED lamp according to the existing phase control method, the external controller can easily adjust the illuminance remotely, Can be easily adjusted to adjust the illuminance, so that the convenience of the user can be improved by applying various setting methods.

In addition, the present invention can reduce the manufacturing cost by constructing the illumination system by utilizing the AC phase control module as the basic equipment of the phase control method, not only by the digital control method using the DMX 512 protocol.

1 is a block diagram of an illumination control apparatus for an incandescent lamp for a performance stage using a conventional AC phase control method.
2 is a block diagram of an illuminance control system of an LED stage illumination system using a conventional digital control method.
3 is an overall block diagram of an illuminance control system of an LED stage lighting system using a hybrid system according to the present invention.
4 is a block diagram for explaining the detailed configuration of the LED lamp driving module and the lamp driving control module.
5 is a detailed circuit diagram of FIG.
6 is a flowchart illustrating an operation of the illuminance control apparatus of the LED stage lighting system using the hybrid method according to the present invention.

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

As shown in FIG. 3, the hybrid type illumination controller Lm-1, Lm-2, ..., Lm-n according to the present invention can be distributed over a wide range of broadcasting stations and concert halls.

The illuminance controllers Lm-1 to Lm-n commonly include an AC phase control module 100, an LED lamp driving module 200, and a lamp driving control module 300. The LED lamp driving module 200 and the lamp driving control module 300 are similar to the conventional art in that the AC phase control module 100 controls the phase of the input AC power according to a desired brightness. Respectively.

The illuminance controllers Lm-1 to Lm-n may individually drive the LED lamp module J through the AC phase control module 100 and the LED lamp driving module 200 have.

The illuminance controllers Lm-1 through Lm-n receive the lamp control information DMX 512 from a DMX console (not shown) through the DMX 512 receiving module O, J) can be controlled. Here, the DMX 512 receiving module O can receive lamp control information (DMX 512) by communicating with the DMX console by wire or wirelessly.

FIG. 4 is a block diagram for explaining a detailed configuration of an LED lamp driving module and a lamp driving control module, and FIG. 5 is a detailed circuit diagram of FIG.

The LED lamp driving module 200 is connected between the AC phase control module 100 and the LED lamp module J and adjusts the illuminance by a PWM control method in accordance with the driving control signal of the microcomputer N of the lamp driving control module 300 . The LED lamp module J can generate light in a group unit by wiring a plurality of LED lamps. The PWM control method controls the illuminance by varying the duty of a square-wave current flowing in the LED lamp.

The LED lamp driving module 200 may generally include an input terminal A, a protection circuit, an EMI filter B, and a bridge rectifier C.

The input terminal A transmits the input power of the AC phase control module 100 to the protection circuit and the EMI filter B. [ In this case, the input power may be 110 to 220 AC, which is phase-controlled using the triac of the AC phase control module 100.

The protection circuit and the EMI filter B may include a varistor ZNR1, capacitors C1 and C15 and an inductor L1 to remove ac noise (surge voltage) of the power supply line. And may further include a fuse F1 for blocking the overcurrent when it is input.

The AC power from which the noise is removed from the protection circuit and the EMI filter (B) is rectified and smoothed as a DC power supply through the bridge rectifier (C). In the embodiment, the bridge rectifier C is composed of the bridge diode, but the capacitor elements for smoothing the full-wave rectified power may be further used.

The full-wave rectified power is transmitted to a power factor compensator (PFC) E connected to the rear end. The power factor compensating unit E is configured to compensate for losses generated in the bridge rectifier C. [ Since the circuit configuration and operation of the power factor compensating unit E are well known in the art, a detailed description thereof will be omitted herein.

In order to prevent a flicker phenomenon caused by a change in the brightness of light in the LED lamp due to current and voltage changes, flicker prevention between the bridge rectifier C and the power factor compensator E, as in the embodiment, The circuit D can be additionally provided.

The flicker prevention circuit D may include resistors R5 and R8, a capacitor C2, and a thyristor U3. The on time of the thyristor U3 can be adjusted by appropriately setting the time constant determined by the resistor R5 and the capacitor C2 to prevent the flicker phenomenon in the LED lamp.

The PWM driving unit F is connected between the primary winding of the power factor compensating unit E and the transformer G. [ The PWM driving unit F changes the voltage input to the primary winding of the transformer G from the output terminal of the power factor compensating unit E in accordance with the drive control signal of the microcomputer N to be described later. That is, the output voltage of the power factor compensating unit E changes according to the output of the PWM driving unit F and is input to the primary winding of the transformer G. The transformer G inputs the output of the power factor compensating unit E Down to the rectifier H in accordance with the winding ratio.

The rectifier H may be constituted by a diode D12 and a capacitor C16 so as to rectify the smoothed output power and output the smoothed power to the LED lamp module J.

A current detector I may be additionally provided for rectifying and smoothing the rectifier H to detect the current applied to the LED lamp module J. [ The current detected by the current detector I is provided to the microcomputer N to be described later.

As described above, the LED lamp driving module 200 can drive the LED lamp module J according to the input power from the AC phase control module 100. When the phase-controlled input power is provided by the AC phase control module 100, the LED power can be adjusted for the LED lamp module J with the phase-controlled input power. The adjustable illumination range is phase controlled in the range of 0 ° to 180 ° according to the operation in which the switching element (triac) of the AC phase control module 100 is toggled on and off, typically using a zero cross of an alternating neutral line The ON time of the LED lamp is determined in proportion to the energization time of the triac as a reference. When the driving timing of the triac is shifted N times by 180 degrees in accordance with the preset illuminance value, the driving timing of the triac is gradually delayed The power supplied to the LED lamp is finally cut off. At this time, it is generally, but not necessarily, divided into N in relation to the N division.

On the other hand, it is also possible to output the AC power without substantially controlling the phase in the AC phase control module 100. In this case, since the driving timing of the triac is not shifted, the triac can be always turned on. An external manager transmits lamp control information DMX 512 for adjusting the illuminance using the DMX console in a state where phase control is not practically performed by the AC phase control module 100, The lamp control information DMX 512 may be provided to the microcomputer N of the lamp driving control module 300 to remotely control the illuminance of the LED lamp of the LED lamp module J.

(Lm-1) ... Lm-n of the illumination controller Lm-1 (Lm-2) ... Lm-n in a state where the phase control is not performed by the AC phase control module 100 Or a second setter Q. The first setter P or the second setter Q may be used to determine a desired illuminance setting value by a user located at the scene of the stage. The first setter P applies the illuminance setting value corresponding to the operation of the button switch to the micom N as the PWM signal and the second setter Q sets the illuminance of the DC level according to the operation of the turn knob And the set value is applied to the microcomputer N. [

The lamp drive control module 300 includes a phase detector K, first and second photocouplers L and M, and a micom N. [ The first photocoupler L is a medium for transmitting the drive control signal of the microcomputer N to the PWM driving unit F and the second photocoupler M is a medium for transmitting the detection signal of the phase detector K to the micom N. [ . The first and second photocouplers L and M together with the transformer G serve to electrically isolate the front end and the rear end with respect to the insulated wire S-S.

One side of the phase detecting section K is connected between the bridge rectifier C and the flicker preventing circuit D and the other side is connected to the anode of the light emitting diode of the second photocoupler M. [ The phase detector K may be composed of resistors R26, R27, R28, a capacitor C24, and an npn transistor Q3. The phase detector K detects the phase of the full wave rectified power from the bridge rectifier C and applies a square wave detection signal to the micom N through the second photocoupler M. [

The microcomputer N can determine whether the input power source is phase-controlled or not-phase-controlled according to a detection signal applied through the second photocoupler M. The micom N does not apply the illuminance setting method in the field using the first and second setter P (Q) and the remote illuminance setting method using the DMX 512 receiving module (O) . If the phase is not controlled as a result of the determination based on the detection signal of the second photocoupler M, the illuminance setting method in the field using the first and second setter P (Q) and the DMX 512 receiving module O ) May be used as the remote illumination setting method. If the field illuminance setting method and the remote illuminance setting method are simultaneously activated, any one of the methods may be applied according to a preset priority order.

The microcomputer N supplies a drive control signal for changing the input voltage applied to the primary winding of the transformer G in accordance with the current detected by the current detector I and the setting illuminance value 1 photocoupler L to the PWM driver F. Accordingly, the PWM driving unit F changes the voltage input to the primary winding of the transformer G from the power factor compensating unit E, so that the current flowing through the LED lamp changes and the brightness of the light can be adjusted.

The operation of the light intensity controller of the LED stage lighting system using the hybrid control method according to the present invention will be described.

Referring to FIG. 6, the illuminance of the LED lamp is set in accordance with a phase control method depending on the driving timing of the triac in the AC phase control module 100 or a digital control method using a DMX console by an external manager (S100).

The phase-controlled input power in the AC phase control module 100 is applied to the input terminal A of the LED lamp driving module 200 and then the noise is removed from the protection circuit and the EMI filter B. Then the bridge rectifier C And is rectified and smoothed as a DC power source. The power source that is full-wave rectified in the bridge rectifier C is subjected to loss compensation by the power factor correcting unit E and then applied to the primary winding of the transformer G. The output power that is reduced by the transformer G is rectified and smoothed by the rectifier H, and then output to the LED lamp module J.

In the embodiment, a flicker prevention circuit D may be additionally provided between the bridge rectifier C and the power factor compensating unit E. The flicker prevention circuit (D) is for preventing a flicker phenomenon caused by a change in the brightness of light in the LED lamp due to a change in current and voltage. The flicker prevention circuit D may include resistors R5 and R8, a capacitor C2 and a thyristor U3. The on time of the thyristor U3 can be adjusted by appropriately setting the time constant determined by the resistor R5 and the capacitor C2 to prevent the flicker phenomenon in the LED lamp.

In the embodiment, the PWM driving unit F is provided between the primary winding of the power factor compensating unit E and the transformer G. The PWM driving unit F changes the voltage input to the primary winding of the transformer G from the output terminal of the power factor compensator E in accordance with the drive control signal of the microcomputer N. [

The current detector I may be additionally provided in the embodiment to rectify and smoothen the current in the rectifier H to detect the current applied to the LED lamp module J. The current detected by the current detector I is provided to the microcomputer N (S200).

The phase detector K of the lamp drive control module 300 detects the phase of the full wave rectified power in the bridge rectifier C and applies a square wave detection signal to the micom N through the second photocoupler M (S300).

The microcomputer N determines whether phase control is substantially performed in the AC phase control module 100 according to the detection signal of the phase detector K (S400). For example, the phase control state can be determined according to the pulse width of the detection signal.

The microcomputer N ignores the remote illuminance setting method using the DMX 512 receiving module O, in a state in which the phase is controlled as a result of the determination in accordance with the detection signal of the phase detector K. In addition, in the embodiment, the user of the field also ignores the setting of the illuminance using the first and second setter P (Q) (S500).

On the other hand, if it is determined that the phase is not controlled in accordance with the detection signal of the phase detector K, the microcomputer N sets the remote control mode using the DMX 512 receiving module O, And is applied to the PWM driver F through the photocoupler L. [ Accordingly, the PWM driving unit F can change the current flowing through the LED lamp due to the voltage change input from the power factor compensating unit E to the primary winding of the transformer G, thereby adjusting the brightness of the light (S600). Also, in the embodiment, the illuminance of the LED lamp can be adjusted by the illuminance setting method in the field using the first and second setter P (Q). Here, if the field illuminance setting method and the remote illuminance setting method are simultaneously activated, any one of the methods can be selectively applied according to the preset priority order.

100: AC phase control module
200: LED lamp driving module
300: lamp drive control module

Claims (7)

LED lamp module;
An AC phase control module for controlling a phase of an AC power source by driving a driving point of a triac on the basis of a zero cross of an AC neutral line in order to adjust an illuminance of the LED lamp module;
An LED lamp driving module for rectifying and smoothing the input power of the AC phase control module and applying the rectified and smoothed input power to the LED lamp module;
A DMX 512 receiving module for receiving lamp control information transmitted by an external manager to adjust the illuminance of the LED lamp module;
A lamp driving control module controlling the LED lamp driving module according to the lamp control information received by the DMX512 receiving module to control the illuminance of the LED lamp module when phase control is not substantially performed in the AC phase control module; ≪ / RTI >
Wherein the lamp driving control module comprises: a phase detector for detecting a phase of a power source rectified by the bridge rectifier and outputting a rectangular wave detection signal; a phase detector for detecting a phase of the AC phase control module according to a detection signal of the rectangular wave detected by the phase detector; And a microcomputer for judging a control operation,
Wherein the microcomputer ignores the remote illumination setting method using the DMX 512 receiving module when the phase is in a phase-controlled state according to a detection signal of the phase detector, and ignores the remote illumination setting method using the hybrid control method. Control device. The method according to claim 1,
Wherein the LED lamp driving module includes a protection circuit, an EMI filter and a bridge rectifier. The method according to claim 1,
The lamp driving control module further includes a first photocoupler for transmitting a driving control signal of the microcomputer to the PWM driving unit of the LED lamp driving module, and a second photocoupler connected between the phase detecting unit and the micom. A device for controlling the intensity of an LED stage light using a hybrid control method. The method according to claim 1,
Further comprising a first setting unit and a second setting unit for setting the illuminance of a user of the field where the LED lamp module is installed,
The first setter applies the illuminance setting value corresponding to the operation of the button switch to the microcomputer as a PWM signal,
And the second setter applies a DC level illumination value to the micom according to the operation of the rotary knob.
delete The method of claim 3,
And the microcomputer applies a drive control signal to the PWM driver through the first photocoupler if the phase control is not performed as a result of the determination in accordance with the detection signal of the phase detector. Illuminance control device. 3. The method of claim 2,
The LED lamp driving module further includes a flicker prevention circuit connected to a rear end of the bridge rectifier,
Wherein the flicker prevention circuit controls the on time of the thyristor by setting a time constant determined by a resistor and a capacitor so as to prevent a flicker phenomenon occurring in the LED lamp module. Control device.

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