JP5789727B1 - Illuminance control device for LED stage lighting system using hybrid control system - Google Patents

Abstract

To selectively adjust the illuminance of an LED lamp by selectively applying a phase control method and a digital control method, an external administrator uses a DMX console as well as an on-site user to remotely control the LED lamp. An inexpensive lighting system that can adjust the illuminance. An LED lamp driving module that rectifies and smoothes an input power source of an AC phase control module and applies the LED lamp module to the LED lamp module, and a lamp control that is transmitted by an external administrator to adjust the illuminance of the LED lamp module. The DMX512 receiving module O that receives the information, and if the phase control is not substantially performed by the AC phase control module, the LED lamp driving module is controlled by the lamp control information received by the DMX512 receiving module, and the illuminance of the LED lamp module A lamp drive control module 300 for adjusting [Selection] Figure 3

Description

The present invention relates to an illuminance control device for an LED stage lighting system using a hybrid control system. More particularly, the present invention relates to an illuminance control device for an LED stage lighting system using a hybrid control system, which can selectively control the illuminance of an LED lamp by selectively using a phase control system and a digital control system.

  In general, white illumination lamps such as halogen lamps installed to enhance the visual effect of stage equipment in broadcasting stations and performance halls are configured with an illuminance control device to adjust the brightness of the light using a phase control method. Can be done. As a typical example of such a control method, as shown in FIG. 1, a number of illuminance controllers (L1, L1) that individually adjust the illuminance with respect to a large number of white illumination lamps installed in a shooting set place or a stage. L2, ..., Ln). Each illuminance controller (L1, L2,..., Ln) includes a driver 20 connected between the AC phase control module 10 and the white illumination lamp 30, but the AC phase control module 10 has a desired brightness. The phase of the input AC power supply is controlled and output so as to match, and the illuminance of the white illumination lamp 30 can be controlled by the driver 20 according to this.

  In order to solve the problem of excessive energy consumption due to low energy efficiency of white lighting lamps such as halogen lamps, a technology that uses LED lamps as the light source of the stage lighting system and adjusts the illuminance using a digital control method has been developed. Has been. As an example, as shown in FIG. 2, a number of DMX splitters 51, 52, 53, 54 are connected to the DMX console 40 via communication lines, and a multi-LED lamp is connected to each DMX splitter 51, 52, 53, 54. The DMX console 40 controls the on, off, and illuminance adjustments of the LED lamp 60 using the DMX512 protocol, which is an international standard, with the wiring 60 connected.

  As the stage lighting apparatus becomes larger, enormous costs are required to apply a digital control method capable of remote control when installing in a wide range. In addition, even if the illuminance is adjusted for the LED lamps installed at each site or individual settings are required temporarily and are not required, there is no other problem than controlling the operation of the LED lamps depending only on the DMX console. is there.

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

Korean Registered Patent No. 10-129465

  One aspect of the present invention is that an LED lamp is installed as a light source for stage lighting, and the phase control method and the digital control method are selectively applied so that the illuminance of the LED lamp can be adjusted. The external administrator remotely adjusts the illuminance of the LED lamp using the DMX console.

  The illuminance control device for LED stage lighting using the hybrid control method according to the embodiment of the present invention as described above is an LED lamp module, and a triac based on the zero cross of an AC neutral line for adjusting the illuminance of the LED lamp module. AC phase control module for moving the driving point and controlling and outputting the phase of the AC power source, LED lamp driving module for rectifying and smoothing the input power source of the AC phase control module and applying it to the LED lamp module, the LED lamp module A DMX512 receiving module that receives lamp control information transmitted by an external manager to adjust the illuminance of the lamp, and a lamp received by the DMX512 receiving module if the AC phase control module is not substantially phase-controlled. control It characterized in that it comprises a lamp driving control module for adjusting the illumination intensity of the LED lamp module by controlling the LED lamp driving module according to distribution.

  The LED lamp driving module includes a protection circuit, an EMI filter, and a bridge rectifier, and the lamp driving control module detects a phase of a power source that is full-wave rectified by the bridge rectifier and outputs a rectangular detection signal. And a microcomputer that determines a phase control operation in the AC phase control module based on a rectangular detection signal detected by the phase detection unit.

  The lamp drive control module includes a first photocoupler that transmits a drive control signal of the microcomputer to a PWM drive unit of the LED lamp drive module, and a second photocoupler connected between the phase detection unit and the microcomputer. It further includes a photocoupler.

  The first setting device further includes a first setting device and a second setting device for setting the illuminance by a user at the site where the LED lamp module is installed, and the first setting device PWMs the illuminance setting value by operating the button switch. The signal is applied to the microcomputer as a signal, and the second setting device applies a DC level illuminance setting value to the microcomputer by operation of a rotary knob.

  The microcomputer may ignore the remote illuminance setting method using the DMX512 receiving module if the phase is controlled as a result of the determination based on the detection signal of the phase detector.

  The microcomputer applies a drive control signal to the PWM drive unit via the first photocoupler if the phase is not controlled as a result of the determination by the detection signal of the phase detection unit. To do.

  The LED lamp driving module further includes a flicker prevention circuit connected to a rear end of the bridge rectifier, and the flicker prevention circuit sets a time constant determined by a resistor and a capacitor to adjust an on-time of the thyristor. Thus, the flicker phenomenon generated in the LED lamp module is prevented.

  As described above, in addition to the method of adjusting the illuminance of the LED lamp by the existing phase control method, the present invention is not only easy to adjust the illuminance remotely by an external administrator, but also allows the user at the site to use a button switch or rotation. Since it is possible to adjust the illuminance by simply setting the illuminance set value using the knob, it is possible to improve convenience for the user by applying various setting methods.

  In addition, the present invention does not include only the digital control method using the DMX512 protocol, but can reduce the manufacturing cost by using the AC phase control module as a basic equipment of the phase control method to configure the lighting system. .

It is a block diagram of the illumination intensity control apparatus of the incandescent lamp for performance stages using the conventional AC phase control system. It is a block diagram of the illumination intensity control apparatus of the LED stage lighting system using the conventional digital control system. 1 is an overall block diagram of an illuminance control device of an LED stage lighting system using a hybrid system according to the present invention. It is a block diagram for demonstrating the detailed structure of a LED lamp drive module and a lamp drive control module. FIG. 5 is a detailed circuit diagram of FIG. 4. It is a flowchart for demonstrating operation | movement of the illumination intensity control apparatus of the LED stage lighting system using the hybrid system by this invention.

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

  As shown in FIG. 3, the illuminance controllers Lm-1, Lm-2. . . Lm-n can be distributed over a wide range of broadcasting stations and performance halls.

  Illuminance controllers Lm-1, Lm-2. . . Lm-n includes the AC phase control module 100, the LED lamp driving module 200, and the lamp driving control module 300 in common. Here, the configuration including the AC phase control module 100 that controls and outputs the phase of the input AC power supply in accordance with the desired brightness is the same as that of the prior art. Characteristically, the LED lamp driving module 200 and the lamp driving control module 300 are provided. Prepare.

  Illuminance controllers Lm-1, Lm-2. . . Lm-n can individually drive the LED lamp module J via the AC phase control module 100 and the LED lamp driving module 200.

  Also, the illuminance controllers Lm-1, Lm-2. . . Lm-n can transmit the lamp control information (DMX512) from a DMX console (not shown) via the DMX512 receiving module O to control the illuminance for the LED lamp module J. Here, the DMX 512 reception module O can receive lamp control information (DMX 512) by communicating with the DMX console in a wired or wireless manner.

  FIG. 4 is a block diagram for explaining detailed configurations of the LED lamp driving module and the 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 can adjust the illuminance by a PWM control method according to the driving control signal of the microcomputer N of the lamp driving control module 300. The LED lamp module J can generate light in groups by wiring a plurality of LED lamps, and the PWM control method controls the illuminance by varying the duty of the current in the form of a rectangular wave flowing through 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. At this time, the input power source may be 110 to 220 AC phase-controlled using the triac of the AC phase control module 100.

  The protection circuit and the EMI filter B can include a varistor ZNR1, capacitors C1, C15, and an inductor L1 in order to remove AC noise (surge voltage) of the power supply line. Further, when an overcurrent is input, a fuse F1 for interrupting the current can be further included.

  The AC power supply from which noise has been removed by the protection circuit and the EMI filter B is rectified and smoothed as a DC power supply via the bridge rectifier C. In the embodiment, the bridge rectifier C is constituted by a bridge diode, but a capacitor element for smoothing a full-wave rectified power supply may be further used.

  The full-wave rectified power supply is transmitted to a power factor compensator (PFC) E connected to the rear end thereof. The power factor compensation unit E is configured to compensate for the loss generated in the bridge rectifier C. Since the circuit configuration and operation of the power factor compensator E are known techniques, a specific description thereof will be omitted in this specification.

  In order to prevent the flicker phenomenon that occurs when the brightness of light is continuously changed in the LED lamp due to a change in current and voltage, as in the embodiment, between the bridge rectifier C and the power factor compensation unit E, An additional flicker prevention circuit D can be installed.

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

  A PWM drive unit F is connected between the power factor compensation unit E and the primary winding of the transformer G. The PWM drive unit F changes the voltage input to the primary winding of the transformer G from the output terminal of the power factor compensation unit E in accordance with a drive control signal of the microcomputer N described later. That is, the output voltage of the power factor compensator E changes according to the output of the PWM drive unit F and is input to the primary winding of the transformer G. The transformer G receives the input of the output of the power factor compensator E and changes the winding ratio. Accordingly, the voltage is stepped down and output to the rectifier H.

  The rectifier H can be configured by a diode D12 and a capacitor C16 so that a power source obtained by rectifying and smoothing the stepped down output power source is output to the LED lamp module J.

  A current detector I that detects the current applied to the LED lamp module J after being rectified and smoothed by the rectifier H may be additionally provided. The current detected by the current detector I is provided to the microcomputer N described later.

  As described above, the LED lamp driving module 200 can drive the LED lamp module J by the input power from the AC phase control module 100. When receiving an input power source controlled in phase by the AC phase control module 100, the illuminance of the LED lamp module J can be adjusted with the input power source controlled in phase. The adjustable illuminance range is phase-controlled in the range of 0 ° to 180 ° by the operation in which the switching element (triac) of the AC phase control module 100 is toggled on / off, but normally the zero cross of the AC neutral line As a reference, the on-time of the LED lamp is determined in proportion to the energization time of the triac, and if the time point at which such a triac is driven moves from 180 ° to N times according to the set illuminance value, it becomes 0 °. The driving time of the triac gradually becomes late, and finally the power supplied to the LED lamp is cut off. At this time, it is common to divide into N equal parts in connection with N division, but it is not necessarily limited to this.

  On the other hand, it is also possible to output AC power without substantially controlling the phase by the AC phase control module 100. In this case, the triac is always energized in the on state without moving the driving point of the triac. be able to. An external administrator transmits lamp control information (DMX512) for adjusting the illuminance using the DMX console in a state where phase control is not substantially performed by the AC phase control module 100, and the DMX512 receiving module O transmits the lamp control information. (DMX512) can be provided to the microcomputer N of the lamp drive control module 300 to remotely adjust the illuminance of the LED lamp of the LED lamp module J.

  Further, as in the embodiment, the illuminance controllers Lm-1, Lm-2,... Are not controlled by the AC phase control module 100. . . An Lm-n first setting device P or second setting device Q is additionally provided, and the first setting device P or the second setting device Q is used to determine the illuminance setting value desired by the user located on the stage. be able to. The first setting device P applies the illuminance setting value by the operation of the button switch to the microcomputer N as a PWM signal, and the second setting device Q applies the illuminance setting value of the DC level to the microcomputer N by the operation of the rotary knob (knob). To do.

  The lamp drive control module 300 includes a phase detection unit K, first and second photocouplers L and M, and a microcomputer N. Here, the first photocoupler L is a medium that transmits the drive control signal of the microcomputer N to the PWM drive unit F, and the second photocoupler M is a medium that transmits the detection signal of the phase detection unit K to the microcomputer N. It is. The first and second photocouplers L and M, together with the transformer G, serve to electrically insulate the front end and the rear end with respect to the insulation line SS.

  The phase detection unit K has one side connected between the bridge rectifier C and the flicker prevention circuit D, and the other side connected to the anode of the light emitting diode of the second photocoupler M. The phase detection unit K can be composed of resistors R26, R27, R28, a capacitor C24, and an npn transistor Q3. The phase detection unit K detects the phase of the power source that has been full-wave rectified by the bridge rectifier C, and applies a rectangular wave detection signal to the microcomputer N via the second photocoupler M.

  The microcomputer N can determine, based on the detection signal applied via the second photocoupler M, whether the input power supply is in phase-controlled state or phase-controlled state. If the phase is controlled, the microcomputer N does not apply the on-site illuminance setting method using the first and second setting devices P and Q and the remote illuminance setting method using the DMX512 receiving module O. On the other hand, if the phase control is not performed as a result of the determination based on the detection signal of the second photocoupler M, the on-site illuminance setting method using the first and second setting devices P and Q and DMX512 reception Any one of the remote illuminance setting methods using the module O can be applied. If the on-site illuminance setting method and the remote illuminance setting method are activated at the same time, any one of the methods can be applied according to a preset priority order.

  When the illuminance setting method is determined, the microcomputer N outputs a drive control signal for changing the input voltage applied to the primary winding of the transformer G according to the current detected by the current detector I and the set illuminance value. The voltage is applied to the PWM drive unit F via the photocoupler L. As a result, the PWM drive unit F changes the voltage input from the power factor compensation unit E to the primary winding of the transformer G, and the current flowing through the LED lamp changes to adjust the brightness of the light. .

  The operation of the illuminance control device of the LED stage lighting system using the hybrid control system according to the present invention configured as described above will be described.

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

  The input power source whose phase is controlled by the AC phase control module 100 is applied to the input terminal A of the LED lamp driving module 200, and then noise is removed by the protection circuit and the EMI filter B, and then the direct current is passed through the bridge rectifier C. Rectified and smoothed as a power source. The power source that has been full-wave rectified by the bridge rectifier C is subjected to loss compensation by the power factor compensation unit E and then applied to the primary winding of the transformer G. The output power source stepped down 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 can be additionally provided between the bridge rectifier C and the power factor compensation unit E. The flicker prevention circuit D is for preventing a flicker phenomenon that occurs when the brightness of light continuously changes in the LED lamp due to changes in current and voltage. Such a flicker prevention circuit D can include resistors R5 and R8, a capacitor C2, and a thyristor U3. A flicker phenomenon in the LED lamp can be prevented by appropriately setting a time constant determined by the resistor R5 and the capacitor C2 and adjusting an on time of the thyristor U3.

  In the embodiment, a PWM drive unit F is provided between the primary winding of the power factor compensation unit E and the transformer G. The PWM drive unit F changes the voltage input to the primary winding of the transformer G from the output terminal of the power factor compensation unit E according to the drive control signal of the microcomputer N.

  In the embodiment, a current detector I that detects the current applied to the LED lamp module J after being rectified and smoothed by the rectifier H may be additionally provided. The current detected by the current detector I is provided to the microcomputer N (S200).

  The phase detection unit K of the lamp drive control module 300 detects the phase of the power supply that has been full-wave rectified by the bridge rectifier C, and applies a rectangular wave detection signal to the microcomputer N via the second photocoupler M (S300). .

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

  If the phase is controlled as a result of the determination based on the detection signal from the phase detector K, the microcomputer N ignores the remote illuminance setting method using the DMX512 receiving module O without applying it. In the embodiment, the user at the site ignores the illuminance setting using the first and second setting devices P and Q (S500).

  On the other hand, if the phase is not controlled as a result of determination based on the detection signal of the phase detection unit K, the microcomputer N uses the DMX512 receiving module O to remotely control the illuminance, and the microcomputer N outputs the drive control signal to the first photocoupler. Applied to the PWM drive unit F via L. As a result, the PWM drive unit F can adjust the brightness of the light by changing the current flowing through the LED lamp due to the change in the voltage input from the power factor compensation unit E to the primary winding of the transformer G (S600). . Moreover, in an Example, the illumination intensity of an LED lamp can also be adjusted with the illumination intensity setting system in the field using the 1st and 2nd setting devices P and Q. Here, if the on-site illuminance setting method and the remote illuminance setting method are activated at the same time, any one method can be selectively applied according to a preset priority order.

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

Claims (2)

LED lamp module,
An AC phase control module for controlling the phase of the AC power supply by moving the driving point of the triac with reference to the zero cross of the AC neutral line to adjust the illuminance of the LED lamp module;
An LED lamp driving module that rectifies and smoothes an input power source of the AC phase control module and applies it to the LED lamp module;
A DMX512 receiving module for receiving lamp control information transmitted by an external administrator to adjust the illuminance of the LED lamp module;
Lamp driving control for controlling the LED lamp driving module according to the lamp control information received by the DMX512 receiving module to adjust the illuminance of the LED lamp module if the AC phase control module is not substantially in phase control. module,
A first setting device for applying an illuminance setting value of a PWM signal to the microcomputer using a button switch;
A second setting device for applying a DC level illuminance setting value to the microcomputer using a rotary knob;
The lamp driving control module detects a phase of a power source that has been full-wave rectified by a bridge rectifier and outputs a detection signal of a rectangular wave, and a detection signal of the rectangular wave detected by the phase detection unit A microcomputer for determining a phase control operation in the AC phase control module, a first photocoupler for transmitting a drive control signal of the microcomputer to a PWM drive unit of the LED lamp drive module, and between the phase detection unit and the microcomputer A second photocoupler coupled to the
If the microcomputer determines that the input power source is in phase control as a result of the determination based on the detection signal of the phase detector, the on-site illuminance setting method using the first and second setting devices, which is a digital control method, and the Ignoring the remote illuminance setting method using the DMX512 receiver module ,
If the input power source is not phase-controlled as a result of the determination based on the detection signal of the phase detector, the field illumination setting method using the first and second setting devices, which is a digital control method, and the DMX512 receiving module are used. Any one of the remote illuminance setting methods is applied. If the on-site illuminance setting method and the remote illuminance setting method are activated at the same time, any one of the methods is performed according to a preset priority order. An illuminance control device for LED stage lighting using a hybrid control system characterized by applying The LED lamp driving module includes a protection circuit, an EMI filter, a bridge rectifier, and a flicker prevention circuit,
The flicker prevention circuit prevents a flicker phenomenon occurring in the LED lamp module by setting a time constant determined by a resistor and a capacitor and adjusting an on-time of a thyristor. Illumination control device for LED stage lighting using the hybrid control system described in 1.