KR101222170B1 - Light control apparatus and lighting system comprising the same - Google Patents

Abstract

PURPOSE: A light control apparatus and a lighting system comprising the same are provided to change an AC signal to a digital signal and use it as control signal and to prevent noise. CONSTITUTION: A transmitter(300) outputs an AC signal including a control data. Multiple receivers are connected in parallel to the transmitter. The multiple receivers receive the AC signal from the transmitter. The multiple receivers extract a data bit from the AC signal. The data bit includes an address bit and a lighting value bit. [Reference numerals] (300) Transmitter(alternative current signal including control data); (320) DC power unit; (330) Phase detecting unit; (340) Illumination setting unit; (350) Set point converting unit; (360) Calculation control unit; (370) Phase detecting unit

Description

LIGHT CONTROL APPARATUS AND LIGHTING SYSTEM COMPRISING THE SAME

The present invention relates to a light control apparatus and a lighting system including the same.

Light emitting diodes (LEDs) are semiconductor devices that emit light by passing a current through a compound such as gallium (Ga), phosphorus (P), or arsenic (As). LEDs are used in a variety of applications, such as electronic products, lighting, displays.

LED lighting has been recognized as a spotlight alternative because it is more energy-saving and semi-permanent than other light sources.

LED lighting is a current drive element. Therefore, since the brightness can be arbitrarily adjusted by appropriately controlling the average current, the power saving effect is large, the durability is excellent, and a comfortable lighting state can be maintained according to the situation.

In general, in order to adjust the brightness of the LED light, that is, the DC power supply for supplying power to the LED is provided with a signal terminal that can adjust the current value, and the controller with an external adjustment knob or digital dimmer controller Can be connected to each other.

However, according to this method, since the dimming control line must be separately installed together with the AC power line supplied to each lamp, the construction cost and construction period increase, and the controller and the lamp must physically correspond. Therefore, there is a problem in that the control line must be reconstructed when the office space is relocated or the partition in the building is changed.

On the other hand, a general dimming device is a phase control dimmer using TRIAC. According to the phase control dimmer using TRIAC, a constant range of AC power is continuously interrupted to regulate the power supplied to the load. This makes the implementation simple and eliminates the need for a separate control line, while generating excessive harmonic noise at each instant of TRIAC conduction. These harmonic noises can be a serious source of noise for peripheral electronics. In addition, the phase control dimmer using TRIAC is suitable for illuminance control of illumination lamps such as incandescent lamps and halogen lamps, which are resistive loads, but is not suitable for illuminance control of discharge tube type lamps or LED lamps requiring a separate high-pressure generating ballast or direct current.

Recently, a low power LED lighting ballast has been developed to which a phase controlled dimmer using TRIAC can be applied. However, such a ballast is not suitable for illumination control of a large output LED light including a plurality of LED elements, and there is a problem in that power factor decrease, durability decrease, and illumination control are not linear due to an increase in the capacity of the rectifier smoothing circuit capacitor. .

The technical problem to be solved by the present invention is to provide a lighting device and a lighting system including the same.

An illuminator according to an aspect of the present invention includes an AC input unit for supplying AC power, a phase detection unit for detecting a phase from an AC signal supplied from the AC power input unit, and an illuminance setting unit for outputting a set value for adjusting illuminance of a lamp or the like. And a phase controller configured to generate control data at a predetermined phase angle using the phase detected by the phase detector and the set value, and a phase controller to conduct TRIAC based on the control data output from the calculation controller. And a transmitter, wherein the transmitter outputs an AC signal including the control data under the control of the phase controller.

The AC signal including the control data may include an OFF section at a predetermined phase angle.

The AC signal including the control data may be output when an event occurs.

The event may be an event that changes the illuminance of the lamp or an event that turns on the lamp.

The AC signal including the control data may be repeatedly outputted two or more times every event.

An illuminator according to another aspect of the present invention includes an AC signal input unit for supplying an AC signal including control data, a phase detection unit for detecting a phase of the AC signal, a waveform shaping unit for converting the AC signal into a square wave signal, and the square wave A data detection unit for detecting valid data from a signal, an operation control unit for converting the valid data into a dimming control value, and a control signal converting unit for converting the dimming control value to an analog value or a pulse width modulation (PWM) value And at least one receiver, wherein the receiver controls the illuminance of the lamp using the dimming control value.

The AC signal including the control data may include an off period at a predetermined phase angle.

The phase detector may extract a zero crossing point and an OFF section from the AC signal, and the waveform shaping unit may configure the off section as data bits.

The zero crossing point may be used as a synchronization signal and the data bits may be used as the valid data.

The data bit may be used as an address bit indicating an address of the receiver or a dimming value bit indicating a level of illumination of the lamp.

An illumination system according to an aspect of the present invention includes an transmitter for outputting an AC signal including control data for illuminance adjustment of a lamp and an parallel connection with the transmitter, the address information or illuminance control information from the AC signal including the control data. It includes a dimming device including at least one receiver for controlling the illumination of the lamp by extracting, at least one ballast respectively connected to the at least one receiver, and at least one lamp respectively connected to the at least one ballast. .

The AC signal including the control data is generated using a preset value set to adjust the phase detected from the AC signal input to the transmitter and the illuminance of the lamp, and may include an off period at a predetermined phase angle. have.

The address information or illuminance control information may be extracted using at least one of a phase, a zero crossing point, and an OFF section of the AC signal including the control data.

The continuous noise problem of phase controlled dimmers using TRIAC can be solved. In addition, it is possible to control a plurality of lights without a separate control wiring, even if the partition is changed in the office, etc. including a plurality of lights can be responded only by modifying the logical address of the receiver without additional wiring work. It can be applied to various lighting fixtures such as halogen lamps and LED lamps.

1 is a diagram illustrating a circuit diagram of a phase control dimmer using TRIAC.
2 is a graph showing a voltage waveform of a phase control dimmer using TRIAC.
3 is a diagram illustrating a transmitter of a light control apparatus according to an embodiment of the present invention.
4 is an output waveform of a transmitter of the light control apparatus according to an embodiment of the present invention.
5 is a diagram illustrating a receiver of a light control apparatus according to an embodiment of the present invention.
6 is an output waveform of a receiver of a light control apparatus according to an embodiment of the present invention.
7 is a diagram illustrating an illumination system to which a light control apparatus according to an embodiment of the present invention is applied.

DETAILED DESCRIPTION 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. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

1 is a diagram showing a circuit diagram of a phase controlled dimmer using TRIAC, and FIG. 2 is a graph showing a voltage waveform of a phase controlled dimmer using TRIAC.

Referring to FIG. 1, a circuit diagram 100 of a phase control dimmer using TRIAC includes an AC input unit 110, a load 120, a variable resistor R1, a fixed resistor R2, a capacitor C1, a diac, and a triac. Liquid (TRIAC).

According to the dimmer using TRIAC, the conduction angle of the alternating current flowing through the TRIAC is adjusted by controlling the variable resistor R1, and the average power applied to the load is controlled.

Specifically, by adjusting the variable resistor R1, the conduction of the TRIAC is blocked until the capacitor C1 reaches the trigger voltage of the DIAC. The DIAC triggers the TRIAC at the point in time delayed by α and conducts current from the point of α to π. The same operation is performed in the remaining half cycle (π to 2π) section. That is, within one cycle, 0 to α and π to (π + α) are phase angles, and α to π and (π + α) to 2 π are conduction angles. As a result, the load 120 may be supplied with the current as much as the hatched portion of FIG.

According to such a phase control dimmer using a general TRIAC, excessive harmonic noise is generated whenever the TRIAC is conducted, and there is a problem that is difficult to apply to LED lighting.

Accordingly, according to one embodiment of the present invention, by modulating the AC signal into a digital signal and using it as a control signal, disclosed is a light control device for adjusting the dimming of the lamp.

3 is a diagram illustrating a transmitter of a light control apparatus according to an embodiment of the present invention.

Referring to FIG. 3, the transmitter 300 of the dimming device includes control data for adjusting the illuminance of an illumination lamp in a manner of adjusting the conduction angle of the phase of the AC signal, and then transmits the control data to the receiver of the dimming device.

To this end, the transmitter 300 of the light control device includes an AC input unit 310, a DC power supply unit 320, a phase detector 330, an illuminance setting unit 340, a set value converter 350, an operation control unit 360, and a phase. The controller 370 and the TRIAC 380 are included.

The AC input unit 310 supplies AC power for synthesizing the power supplied to the load illumination and the control data for illumination control.

The DC power supply unit 320 supplies DC power required for the transmitter 300 of the light control device.

The phase detector 330 detects a phase from an AC signal supplied from the AC input unit 310.

Meanwhile, the illuminance setting unit 340 sets, stores, and outputs a set value for controlling dimming control, for example, illuminance of a lamp according to each stage. The illuminance setting unit 340 may output a set value using a variable resistor, but is not limited thereto. The illuminance setting unit 340 may be implemented as a digital setter that outputs a set value as a digital value. When the illuminance setting unit 340 is implemented as a digital setter, the set value may be variously set, for example, in steps 0 to 3, 0 to 7, 0 to 15, and the like.

The set value converting unit 350 converts the set value output from the dimming setting unit 340 into a control value to be controlled.

The operation controller 360 generates control data to be transmitted at a predetermined phase angle by using the phase detected by the phase detector 330 and the control value output from the set value converter 350.

The phase controller 370 properly turns on / off the TRIAC 380 based on the control data output from the operation controller 360.

The TRIAC 380 conducts an AC signal including control data under the control of the phase controller 370.

4 is an output waveform of a transmitter of the light control apparatus according to an embodiment of the present invention.

Referring to FIG. 4, the transmitter of the dimming device outputs an AC signal including an OFF section to a receiver corresponding to the load of the dimming device. The dotted line portion of FIG. 4 means an OFF section.

To this end, the operation control unit 360 of the transmitter 300 of the dimming device may generate control data such that the control value output through the dimming setting unit 340 and the setting value converting unit 350 appears at a predetermined phase angle. have.

This control data is continuously generated, not controlling the AC signal phase, but once when data is required to be sent, that is, when the dimming value is changed or when the power is switched from OFF to ON, or several times to ensure the reliability of the transmission data. It is generated repeatedly and output.

The phase controller 370 of the transmitter 300 of the dimming device may control ON / OFF of the TRIAC 380 so that control data is included in the AC signal.

Hereinafter, the control data will be described as an example of being displayed as the OFF section of the AC signal, but is not limited thereto. The control data may be displayed in the ON section of the AC signal.

5 is a diagram illustrating a receiver of a light control apparatus according to an embodiment of the present invention.

Referring to FIG. 5, the receiver 500 of the dimming device includes an AC signal input unit 510, a DC power supply unit 520, a phase detector 530, a waveform shaping unit 540, a data detector 550, and an operation controller 560. ), A control signal converter 570 and a dimming control output unit 580.

The AC signal input unit 510 inputs an AC signal including control data output from the transmitter of the dimming device.

The DC power supply unit 520 supplies the DC power required for the circuit of the receiver 500 of the dimming device.

The phase detector 530 detects a phase of an AC signal input through the AC signal input unit 510.

The waveform shaping unit 540 converts an AC signal including control data into a square wave signal having a digital value.

The data detector 550 detects valid data from the square wave signal output from the waveform shaping unit 540.

The operation control unit 560 converts the valid data detected by the data detection unit 550 into the dimming control value.

The control signal converter 570 converts the dimming control value, which is a digital value, into an analog value or a pulse width modulation (PWM) value.

The dimming control output unit 480 transmits the dimming control signal converted by the control signal converter 470 to the ballast.

6 is an output waveform of a receiver of a light control apparatus according to an embodiment of the present invention.

Referring to FIG. 6, the AC signal input unit 510 of the receiver 500 of the dimming device receives control data, for example, an AC signal including an OFF section.

The phase detector 530 of the receiver 500 extracts a zero crossing point and an OFF section from the AC signal, and the waveform shaper 540 generates the OFF section of the AC signal as data bits reconstructed by digital pulses. Can be.

Here, the zero crossing point may be used as a synchronization signal, and the data bits reconstructed into digital pulses may be used as valid data for dimming control.

The data bits reconstructed into digital pulses can be divided into, for example, address bits and dimming value bits. For example, when eight data bits are included in a square wave signal for a predetermined period, four data bits may be represented by address bits and four bits may be represented by dimming value bits. Accordingly, the sixteen lamps can be controlled at 16 levels of illumination using one transmitter of the dimming device.

The data bits reconstructed into digital pulses may be divided into, for example, dimming control bits used to control the illuminance of the sync bit and the illumination lamp for obtaining synchronization. As a result, the reliability of data demodulation can be improved.

An alternating signal containing such control data is not transmitted continuously but may be transmitted for a period of time (e.g., eight cycles of a 60 Hz alternating signal) in the event of special events, such as turning on a lamp or changing a dimming value. Can be. Accordingly, the continuous noise problem of the phase controlled dimmer using TRIAC can be solved.

The control data can be arbitrarily configured to consist of a predetermined number of data bits (for example, 8 bits, 10 bits, 16 bits). However, if the number of bits increases, the stability of the power supply may be impaired.

In this specification, a phase angle in units of 90 degrees is illustrated, but various modifications such as 180 degrees and 45 degrees may be applied according to an application example.

7 is a diagram illustrating an illumination system to which a light control apparatus according to an embodiment of the present invention is applied.

Referring to FIG. 7, the lighting system 700 includes a dimming device 710, ballasts 720-1, 720-2,..., 720-n, and illuminators 730-1, 730-2,. 730-n), an additional device 740, and a management device 750.

The dimming device 710 includes a transmitter 711 and a receiver 712-1, 712-2,..., 712-n. The transmitter 711 outputs an AC signal including control data as in the transmitter illustrated in FIG. 3. The receivers 712-1, 712-2,..., 712-n receive an AC signal including control data and convert it to a control signal for controlling a ballast and a lamp, as shown in FIG. 5. . The transmitter 711 may be connected in parallel with the plurality of receivers 712-1, 712-2,..., 712-n.

In FIG. 7, ballasts 720-1, 720-2, ..., 720-n, and lamps 730-1, 730-2 for each of the receivers 712-1, 712-2, ..., 712-n. , ..., 730-n) is illustrated as being connected. At this time, one transmitter 711 transmits the same AC signal to the plurality of receivers 712-1, 712-2, ..., 712-n. Each receiver 712-1, 712-2,..., 712-n extracts control data from an AC signal and uses each receiver 712-1, 712 using address information and data information included in the control data. -2, ..., 712-n) ballasts and lights can be controlled.

Accordingly, it is necessary to provide separate wiring for a plurality of lights (for example, entrance light, living room light, hallway light, kitchen light, bedroom light, bathroom light, etc.) controlled by one transmitter 711. none.

Address information may be separately configured for each ballast and a lamp. Alternatively, the same address information may be configured for a group including a plurality of ballasts and lights.

Meanwhile, an additional device 740 such as a timer, a sensor (temperature sensor, illuminance sensor, intrusion detection sensor) may be connected to the transmitter 710 of the dimming device 700.

A management device 750 such as a wireless remote control interface may be connected to the transmitter 710 of the dimming device 700 and a wireless remote control terminal may be installed for each space.

Although not shown, the transmitter 710 of the light control apparatus 700 may be controlled using an internet network.

The embodiments of the present invention described above are not implemented only by the apparatus and method, but may be implemented through a program for realizing the function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (13)

Detects the phase of the AC signal, generates control data such that the control value appears at a predetermined phase angle by using a set value for adjusting the detected phase and illuminance of an illuminator, and outputs an AC signal including the control data. A transmitter, and
A plurality of receivers connected in parallel with the transmitter, receiving an AC signal including the control data from the transmitter, and extracting a data bit including an address bit and a dimming value bit from the received AC signal,
And the transmitter outputs the same AC signal to the plurality of receivers. The method of claim 1,
The transmitter is
AC input unit for supplying AC power,
A first phase detection unit detecting a phase from an AC signal supplied from the AC input unit,
An illuminance setting unit which outputs the set value;
A first operation controller which generates the control data using the detected phase and the set value, and
A phase controller configured to conduct TRIAC based on the control data output from the first calculation controller,
A light control apparatus for outputting an AC signal including the control data according to the control of the phase control unit. The method of claim 2,
And an AC signal including the control data includes an OFF section at a predetermined phase angle. The method of claim 2,
And an AC signal including the control data is output when an event occurs. 5. The method of claim 4,
The event is a light control device that is an event that changes the illuminance of the lamp or the event to turn on the lamp. 5. The method of claim 4,
And an AC signal including the control data is repeatedly output at least twice each time an event occurs. The method of claim 1,
The receiver is
A second phase detector for detecting a phase of an AC signal including the control data received from the transmitter;
A waveform shaping unit for converting an AC signal including the control data into a square wave signal,
A data detector for detecting valid data from the square wave signal;
A second operation control unit for converting the valid data into a dimming control value, and
A control signal conversion unit converting the dimming control value into an analog value or a pulse width modulation (PWM) value;
Dimming device for controlling the illuminance of the lamp using the dimming control value. The method of claim 7, wherein
And the second phase detector extracts a zero crossing point and an off section from the AC signal, and the waveform shaping unit configures the off section as the data bits. 9. The method of claim 8,
Wherein said zero crossing point is used as a synchronization signal and said data bit is used as said valid data. The method of claim 1,
The address bit indicates an address of the receiver, and the dimming value bit indicates a step of illuminance of a lamp. Detects the phase of the AC signal, generates control data such that the control value appears at a predetermined phase angle by using a set value for adjusting the detected phase and illuminance of an illumination lamp, and outputs an AC signal including the control data. Transmitter,
A plurality of receivers connected in parallel with the transmitter, receiving an AC signal including the control data from the transmitter, and extracting a data bit including an address bit and a dimming value bit from the received AC signal;
A plurality of ballasts each connected to the plurality of receivers, and
A plurality of lamps respectively connected to the plurality of ballasts
Including,
And the transmitter outputs the same alternating current signal to the plurality of receivers. delete The method of claim 11,
And the data bits are extracted using at least one of a phase, a zero crossing point, and an OFF section of an AC signal including the control data.

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