WO2013048085A1 - Lighting control circuit for led lighting - Google Patents

Lighting control circuit for led lighting Download PDF

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Publication number
WO2013048085A1
WO2013048085A1 PCT/KR2012/007707 KR2012007707W WO2013048085A1 WO 2013048085 A1 WO2013048085 A1 WO 2013048085A1 KR 2012007707 W KR2012007707 W KR 2012007707W WO 2013048085 A1 WO2013048085 A1 WO 2013048085A1
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WO
WIPO (PCT)
Prior art keywords
power
memory
input
led
control circuit
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PCT/KR2012/007707
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French (fr)
Korean (ko)
Inventor
서영석
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Suh Young Suk
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Publication of WO2013048085A1 publication Critical patent/WO2013048085A1/en

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Definitions

  • the present invention relates to a lighting control circuit for LED lighting, and more particularly to an LED lighting control circuit that can effectively control the brightness of the LED lighting by using an AC power supply of about AC100 ⁇ AC250V used in buildings or homes.
  • LED lighting using household AC power is composed of LED emitting light and lighting control circuit.
  • the lighting control circuit is a circuit that controls the on / off or brightness of the LED lights and makes the LEDs operate properly.
  • the technical problem to be solved by the present invention is to control the operation of the LED lighting using the AC power, by using a simple electronic components such as capacitors and resistors by detecting and storing the on and off information of the input AC power supply It is to provide an LED lighting control circuit that can effectively control the operation of lighting, turning off and brightness.
  • the power conversion unit for converting the input AC power to the driving power of the LED;
  • a power on / off sensing unit configured to sense on / off of the input AC power supply;
  • a first memory for storing on-off information which is output data of the power-on-off sensing unit;
  • An AC / DC converter for converting input AC power into DC power;
  • a memory reset unit for resetting the first memory when a predetermined time elapses after the input AC power is turned off; and controlling the operation of the power converter based on the on / off information stored in the first memory.
  • Characterized in that it comprises an illumination control unit for adjusting the brightness of.
  • the LED lighting control circuit for achieving the above technical problem, and a power conversion unit for converting the input AC power to the driving power of the LED;
  • a power on / off sensing unit configured to sense on / off of the input AC power supply;
  • a first memory for storing on-off information which is output data of the power-on-off sensing unit;
  • An AC / DC converter for converting input AC power into DC power;
  • a memory reset unit for resetting the first memory when a predetermined time elapses after the input AC power is turned off; and controlling the operation of the power converter based on the on / off information stored in the first memory.
  • An illumination control unit for adjusting the brightness of the light;
  • a first reverse current breaker connected between an output terminal of the AC / DC converter and a first bias terminal of the first memory to block reverse current.
  • the LED lighting control circuit for achieving the above technical problem, and a power conversion unit for converting the input AC power to the driving power of the LED;
  • a power on / off sensing unit configured to sense on / off of the input AC power supply;
  • a second memory for storing on-off information which is output data of the power-on-off sensing unit;
  • An AC / DC converter for converting the input AC power into DC power;
  • a third reverse current breaker connected between an output terminal of the AC / DC converter and a second bias terminal of the second memory to block reverse current;
  • Capacitor voltage control means for controlling a discharge time of a capacitor connected to a second bias terminal of the second memory;
  • an illuminance control unit configured to control driving of the power converter based on the number of on / off times or on / off times stored in the memory to adjust brightness of the LED.
  • the lighting control circuit for LED lighting can measure and store ON / OFF information of the input AC power supply with a small capacitor, and conveniently operate lighting using low-cost simple electronic components such as ceramic capacitors and chip resistors. It is effective to control.
  • FIG. 1 is a circuit diagram showing an embodiment of an LED lighting control circuit according to the present invention.
  • FIG. 2 is a circuit diagram showing another embodiment of the LED lighting control circuit according to the present invention.
  • FIG. 3 is a circuit diagram showing still another embodiment of the LED lighting control circuit according to the present invention.
  • the LED lighting control circuits 1 and 31 may provide an on / off state of electricity supplied to the input terminals 3 and 33 of AC power. ) And this data is stored in the first memory (28, 58), the illumination control unit 12, 42 controls the operation of the power converter (2, 32) based on the data stored in the first memory LED Control the brightness of (5, 35).
  • the LED lighting control circuit 61 senses the on / off state of electricity supplied to the input terminal 63 of the AC power by the power ON / OFF sensing unit 84, and the data is second.
  • the illuminance controller 72 controls the power converter 62 based on the data stored in the second memory 88 to control the brightness of the LED 65.
  • the power converters 2, 32, and 62 of FIGS. 1 to 3 are parts for converting AC100 to AC250V electricity, which is commonly used household AC electricity, to electricity for driving LED lighting lamps.
  • the power converter 2, 32, 62 may use an AC direct drive circuit in which an LED is directly connected to an AC power source, or may use a buck-boost circuit or flyback converter circuit composed of a diode, a transformer, and a capacitor. Electricity is supplied to the input terminals (3, 33, 63) of the power source.
  • the power converter 2, 32, 62 may be applied in various ways according to the AC direct drive circuit, the buck-boost circuit or the flyback circuit, etc.
  • the present invention does not limit the power converter 2, 32, 62 of a specific method. Do not.
  • the method of adjusting the magnitude of the current flowing through the LED or the duty ratio of the pulse voltage applied to the LED is used.
  • the power on / off sensing units 24, 54, 84 of FIGS. 1 to 3 are parts for sensing whether electricity is supplied to the input terminals 3, 33, 63 of the AC power source.
  • the power on / off sensing unit has input terminals 25, 55, 85 and output terminals 26, 56, 86, and is a part for sensing whether electricity is supplied to an input terminal of an AC power source.
  • 5V may be output when electricity is supplied, and 0V may be output when electricity is not supplied.
  • the power on / off state may be sensed by measuring the voltage of the terminal inside the circuit of FIGS. 1 to 3.
  • the input terminals 25, 55, and 85 of the power on / off sensing units 24, 54, and 84 of FIGS. 1 to 3 may have one terminal 6, 36, and 66 of the power converters 2, 32, and 62.
  • one terminal (10, 40, 70) of the illuminance control unit (12, 42, 72) or one terminal (8, 38, 68) of the AC / DC converter (7, 37, 67) By measuring the voltage across the terminals, you can measure the power-on and off states.
  • These terminals have a voltage of zero when the electric supply is cut off from the input terminals 3, 33, 63 of the AC power source.
  • the AC / DC converters 7 and 37 of FIGS. 1 and 2 include the illumination control unit 12 and 42 or the on-off sensing unit 24 and 54 or the memory reset unit 23 and 53 and the first memory 28 and 58. It is a circuit to make DC electricity necessary for).
  • the AC / DC converters 7 and 37 may include all of the illumination control units 12 and 42, the on-off sensing units 24 and 54, the first memories 28 and 58, and the memory reset units 23 and 53. Supply the necessary DC to the circuit.
  • the AC / DC converter 67 of FIG. 3 is a circuit for making DC electricity required for the illumination control unit 72 or the power on / off sensing unit 84 and the second memory 88.
  • the AC / DC converter 67 supplies DCs necessary for all circuits such as the illumination control unit 72, the power on / off sensing unit 84, and the second memory 88.
  • an AC electric current of about 100 V to 250 V AC supplied to the input terminals 3, 33, and 63 of an AC power source may be converted using a transformer.
  • a circuit can be used that converts to alternating current in or out of volts, rectifies it into a diode and filters it with a capacitor to obtain a DC electricity of around 5V.
  • the lighting control circuit for LED lighting is connected between the output terminal 39 of the AC / DC converter 37 and the first bias terminal VCC1 of the first memory 58 to reverse the current. It characterized in that it comprises a first reverse current circuit breaker (44) for blocking.
  • the LED lighting control circuit of the present invention is connected between the output terminal 69 of the AC / DC converter 67 and the second bias terminal VCC2 of the second memory to block reverse current. It characterized in that it comprises a third reverse current circuit breaker (74).
  • the first bias terminal VCC1 of FIGS. 1 and 2 is a terminal for supplying DC electricity required for the first memories 28 and 58.
  • capacitors 13 and 43 connected in parallel to the first bias terminal VCC1 of the first memories 28 and 58 of FIGS. 1 and 2 are noises of DC power supplied to the first memories 28 and 58. Reduces the power supply temporarily to the first memory (28, 58).
  • the capacitor 73 connected in parallel to the second bias terminal VCC2 of the second memory 88 reduces noise of the DC power supplied to the second memory 88 and temporarily stores the second memory 88.
  • a ceramic capacitor can be used. Commercial ceramic capacitors are often used for products with a value of less than 1uF.
  • the first reverse current circuit breaker 44 of FIG. 2 prevents the charge stored in the capacitor 43 attached to the first bias terminal VCC1 from flowing back to the output terminal 39 of the AC / DC converter 37. As a result, when the output voltage of the AC / DC converter 37 decreases, the first memory 58 temporarily protects the first memory 58.
  • the third reverse current circuit breaker 74 of FIG. 3 prevents the charge stored in the capacitor 73 attached to the second bias terminal VCC2 from flowing back to the output terminal 69 of the AC / DC converter 67. As a result, when the output voltage of the AC / DC converter 67 decreases, the second memory 88 temporarily protects the second memory 88.
  • the first memories 28 and 58 of FIGS. 1 and 2 and the second memories 88 of FIG. 3 receive signals from the power on / off sensing units 24, 54, and 84, and store on / off information of power.
  • the first memory 28, 58 and the second memory 88 may be a volatile memory or flash memory consisting of registers and stores the on-off information in binary form.
  • the on-off information may be an on-off frequency or an on-off time of the input AC power.
  • the on / off frequency means the number of times the electricity is cut off or connected to the AC power input terminal. For example, if the power is turned off once, turn it off again, turn it on again, turn it off again, and turn it on again, the turn-on is three times and the turn-off is two times.
  • the on-off time means on time or off time in each state when the power is repeatedly turned on and off.
  • On time means on time and off time means off time. For example, when the power is turned off, the power is turned on for 1.5 seconds, then turned off for 1.2 seconds, and then turned on again.
  • the first memories 28 and 58 may be reset when the output voltages of the memory reset units 23 and 53 are lowered below a preset voltage to initialize the on / off information.
  • the reset terminal rst of the first memories 28 and 58 of FIGS. 1 and 2 is a terminal for resetting the contents of the first memories 28 and 58.
  • both the on-off frequency and the on-off time, which are on-off information stored in the first memories 28 and 58, are initialized.
  • all internal values are zero.
  • the first memories 28 and 58 may be made in advance to be reset when the voltage of the reset terminal rst drops below 1V.
  • the second memory 88 of FIG. 3 has a second bias terminal VCC2, and supplies DC electricity required to the second memory 88 through the second bias terminal VCC2, and supplies the second memory 88.
  • the second bias terminal (VCC2) of () is reset by being lowered below a predetermined voltage, and the on-off frequency or on-off time is initialized.
  • the content of the second memory 88 is reset and set to an initial value when it is next turned on.
  • the second memory 88 may be designed to be reset when 5V is supplied in a normal state and goes below 1V.
  • the internal values can all be zero.
  • the illuminance controllers 12 and 42 of FIGS. 1 and 2 control the operations of the power converters 2 and 32 based on the on / off information stored in the first memory 28 to control the LEDs 5 and 35. Adjust the brightness of).
  • the illuminance controller 72 of FIG. 3 adjusts the brightness of the LED 65 by controlling the operation of the power converter 62 based on the on / off information stored in the second memory 88.
  • the illuminance control unit 12, 42, 72 to output 100% of the maximum brightness of the LED when the number of turns is one time, and to output 70% of the maximum brightness of the LED when the number of turns is two times, For example, when the number of turns is 3, only 30% of the maximum brightness of the LED is output. Brightness can also be controlled using on and off times.
  • the illuminance controllers 12, 42, and 72 may output a signal to decrease the brightness in proportion to the on time.
  • the memory reset units 23 and 53 cause a voltage change to the reset terminal rst of the first memories 28 and 58 after a predetermined time after the input AC power is turned off, thereby causing the first memories 28 and 58 to be changed. Is reset so that the contents are initialized.
  • the memory reset units 23 and 53 are connected in series with the second reverse current circuit breakers 20 and 50 and the second reverse current circuit breakers 20 and 50 to block reverse current, and the memory reset units 23 and 53 are connected in series. Including the timer circuit (29, 59) that the voltage of the output terminal (19, 49) of the memory reset unit (23, 53) changes over time when the voltage of the input terminal (18, 48) of It features.
  • the first reverse current circuit breaker 44, the second reverse current circuit breakers 20 and 50, and the third reverse current circuit breaker 74 are elements that block the flow of reverse current between two terminals, and equally block the reverse current. It is well known to those skilled in the art that it can be replaced by a plurality of electronic circuits that perform one operation.
  • the timer circuit may include a parallel circuit of a resistor and a capacitor.
  • the timer circuit 29, 59 When the power supplied from the input terminals 3, 33, 63 of the AC power is cut off and the bias voltage VCC2 of the second reverse current breaker 20, 50 goes below the turn-on voltage, the timer circuit 29, 59.
  • the power supplied to the power supply is cut off, and the voltages of the output terminals 19 and 49 of the timer circuits 29 and 59 change with time.
  • the output voltage of the timer circuit is a physical quantity for measuring how much time has elapsed since the voltage of the input terminals 3, 33, 63 of the AC power source was cut off.
  • the timer circuits 29 and 59 are circuits for adjusting the time for which the first memories 28 and 58 are reset.
  • a resistor capacitor parallel circuit including the resistors 21 and 51 and the capacitors 22 and 52 of FIGS. 1 and 2 may be used.
  • the current supply to the input terminals 17 and 47 of the timer circuit is cut off, the charge stored in the capacitors 22 and 52 is discharged through the resistors 21 and 51 and the first memories 28 and 58 as time passes.
  • the voltage of the output terminals 49 of the timer circuits 29 and 59 is lowered, and the output voltages of the memory reset units 23 and 53 are also lowered.
  • the contents of the first memories 28 and 58 are initialized.
  • the voltage of the reset terminal rst of the first memory 28 and 58 is 5V and the voltage of the reset terminal rst.
  • the first memories 28 and 58 are reset, the capacitors 22 and 52 in the timer have a capacity of 100 nF, the resistors 21 and 51 in the timer have a value of 5 MOhm, and the first memory.
  • the timer circuits 29 and 59 are configured as shown in Figs. 1 and 2, for example, when the time for lowering the voltage from 5V to 1V is about 1.6 seconds, the first switch is made after 1.6 seconds or more after turning off the wall switch. The contents of the memory are reset. The reset time can be changed by adjusting the resistance values 21 and 51 and the capacitor values 22 and 52.
  • the capacitor voltage control means 75 is a means for controlling the voltage of the second bias terminal VCC2 and may use a resistance element as an example.
  • the capacitor voltage control means 75 having a function of controlling the time when the voltage of the second bias terminal VCC2 is reduced when no electricity is supplied from the input terminal 33 of the AC power source is the second memory 88. It is connected to the 2 bias terminal VCC2 to adjust the reset time of the second memory.
  • the second bias terminal VCC2 As an example of adjusting the reset time using the capacitor voltage control means 75, when the voltage of the input terminal 63 of the AC power is on, the voltage of the second bias terminal VCC2 is 5V, and the second bias terminal ( When the voltage of VCC2) falls below 1 V, the second memory 88 is reset, the resistance value used as the capacitor voltage control means 75 is 5 MOhm, and the input resistance of the second bias terminal VCC2 is 100 MOhm.
  • the capacity of the power terminal capacitor 73 of the second memory 88 is 100 nF and the input capacitance of the second bias terminal VCC2 is 100 pF, the second bias terminal VCC2 after the input AC power is cut off.
  • the LED lighting control circuit when the AC power is cut off, the on-off information of the AC power can be measured and stored by effectively using the charge stored in the circuit, and the reset time can be easily adjusted.
  • the LED lighting control circuit of the present invention has the advantage that it is possible to conveniently perform the brightness adjustment operation by using a simple electronic component such as a capacitor or a resistor.

Abstract

The present invention relates to an LED lighting control circuit that controls LED lighting powered by 100V to 250V of alternating current electricity used in a building or home. The LED lighting control circuit of the present invention comprises: a power-converting unit (2) that converts input alternating-current power to power for driving an LED (5); a power on/off sensing unit (24) which senses whether the input alternating-current power is on/off; a first memory (28) which stores on/off information, i.e. data outputted from the power on/off sensing unit; an alternating current/direct current converter (7), which converts the input alternating-current power into direct-current power; a memory reset unit (23), which resets the first memory (28) after a predetermined time has elapsed after the input alternating-current power is turned off; and an illumination control unit (12), which controls the brightness of the LED (5) by controlling the operation of the power-converting unit (2) on the basis of the on/off information stored in the first memory (28). The LED lighting control circuit of the present invention is configured so as to enable a brightness control operation to be conveniently controlled using simple electronic components such as a capacitor or resistor having a small capacity.

Description

엘이디 조명용 조명제어회로LED lighting control circuit
본 발명은 LED조명용 조명제어회로에 관한 것으로, 더욱 상세하게는 빌딩이나 가정에서 사용되는 AC100 ~ AC250V 내외의 교류전원을 사용하여 LED조명의 밝기를 효과적으로 제어할 수 있는 LED조명제어회로에 관한 것이다.The present invention relates to a lighting control circuit for LED lighting, and more particularly to an LED lighting control circuit that can effectively control the brightness of the LED lighting by using an AC power supply of about AC100 ~ AC250V used in buildings or homes.
가정용 교류전원을 이용한 LED조명은 빛을 방출하는 LED와 조명제어회로로 구성되어 있다. 조명제어회로는 LED조명의 온오프나 밝기를 조절하고 LED에 적절한 동작을 하도록 제어하는 회로이다. LED lighting using household AC power is composed of LED emitting light and lighting control circuit. The lighting control circuit is a circuit that controls the on / off or brightness of the LED lights and makes the LEDs operate properly.
최근까지 벽면스위치로 LED조명의 밝기를 조정하는 방법에 대한 연구가 진행되어 왔으며, 이에 따라 벽면스위치를 주어진 시간에 켜고 끄는 동작을 반복할 때 이러한 온오프이력정보를 기반으로 LED조명의 밝기를 조절하는 장치가 사용될 수 있다.Until recently, studies on how to adjust the brightness of LED lights with wall switches have been conducted. Accordingly, when the wall switches are repeatedly turned on and off at a given time, the brightness of the LED lights is adjusted based on the on / off history information. Device can be used.
일반적으로, LED조명제어회로가 온오프 정보를 기억하기 위해서 입력교류전원이 차단되었을 때 LED조명제어회로에 전기에너지가 공급되고 있어야 한다. 이를 해결하기 위한 한 가지 방법은 입력교류전원이 차단되었을 때 전기에너지를 공급하기 위해 배터리와 같은 대용량의 전기저장장치를 장착하는 방법이 있으나 대용량의 전기저장장치는 회로를 복잡하게 하고 추가적인 비용을 증가시키며, 회로의 불량을 증가시키는 문제점이 있다.In general, electrical energy must be supplied to the LED lighting control circuit when the input AC power is cut in order for the LED lighting control circuit to store on / off information. One way to solve this problem is to install a large-capacity electrical storage device such as a battery to supply electrical energy when the input AC power is cut off, but the large-capacity electrical storage device complicates the circuit and increases the additional cost. And there is a problem that increases the defect of the circuit.
본 발명이 해결하고자 하는 기술적 과제는 교류전원을 사용하는 LED조명의 동작을 제어하는데 있어서, 케패시터나 저항과 같은 간단한 전자부품을 이용하여 입력교류전원의 온오프 정보를 감지하고 기억함으로써 LED조명의 점등, 소등 및 밝기조정 등의 동작을 효과적으로 조절할 수 있는 LED조명제어회로를 제공하는데 있다.The technical problem to be solved by the present invention is to control the operation of the LED lighting using the AC power, by using a simple electronic components such as capacitors and resistors by detecting and storing the on and off information of the input AC power supply It is to provide an LED lighting control circuit that can effectively control the operation of lighting, turning off and brightness.
상기 기술적 과제를 이루기 위한 본 발명의 실시예에 따른 LED조명제어회로는, 입력교류전원을 LED의 구동전원으로 변환하는 전력변환부와; 상기 입력교류전원의 온오프를 센싱하는 전원온오프 센싱부와; 상기 전원온오프 센싱부의 출력 데이터인 온오프 정보를 저장하는 제1메모리와; 입력교류전원을 직류전원으로 변환하는 교류/직류변환기와; 상기 입력교류전원이 오프된 후 기 설정된 시간이 경과 될 때 상기 제1메모리를 리셋시키는 메모리 리셋부 및, 상기 제1메모리에 저장된 상기 온오프 정보를 근거로 상기 전력변환부의 동작을 제어하여 상기 LED의 밝기를 조정하는 조도제어부를 포함하여 이루어지는 것을 특징으로 한다.LED lighting control circuit according to an embodiment of the present invention for achieving the above technical problem, the power conversion unit for converting the input AC power to the driving power of the LED; A power on / off sensing unit configured to sense on / off of the input AC power supply; A first memory for storing on-off information which is output data of the power-on-off sensing unit; An AC / DC converter for converting input AC power into DC power; A memory reset unit for resetting the first memory when a predetermined time elapses after the input AC power is turned off; and controlling the operation of the power converter based on the on / off information stored in the first memory. Characterized in that it comprises an illumination control unit for adjusting the brightness of.
또한, 상기 기술적 과제를 이루기 위한 본 발명의 다른 실시예에 따른 LED조명제어회로는, 입력교류전원을 LED의 구동전원으로 변환하는 전력변환부와; 상기 입력교류전원의 온오프를 센싱하는 전원온오프 센싱부와; 상기 전원온오프 센싱부의 출력 데이터인 온오프 정보를 저장하는 제1메모리와; 입력교류전원을 직류전원으로 변환하는 교류/직류변환기와; 상기 입력교류전원이 오프된 후 기 설정된 시간이 경과될 때 상기 제1메모리를 리셋시키는 메모리 리셋부 및, 상기 제1메모리에 저장된 상기 온오프 정보를 근거로 상기 전력변환부의 동작을 제어하여 상기 LED의 밝기를 조정하는 조도제어부와; 상기 교류/직류변환기의 출력단자와 상기 제1메모리의 제1바이어스단자 사이에 연결되어 역방향 전류를 차단하는 제1역전류차단기를 포함하여 이루어지는 것을 특징으로 한다.In addition, the LED lighting control circuit according to another embodiment of the present invention for achieving the above technical problem, and a power conversion unit for converting the input AC power to the driving power of the LED; A power on / off sensing unit configured to sense on / off of the input AC power supply; A first memory for storing on-off information which is output data of the power-on-off sensing unit; An AC / DC converter for converting input AC power into DC power; A memory reset unit for resetting the first memory when a predetermined time elapses after the input AC power is turned off; and controlling the operation of the power converter based on the on / off information stored in the first memory. An illumination control unit for adjusting the brightness of the light; And a first reverse current breaker connected between an output terminal of the AC / DC converter and a first bias terminal of the first memory to block reverse current.
또한, 상기 기술적 과제를 이루기 위한 본 발명의 또 다른 실시예에 따른 LED조명제어회로는, 입력교류전원을 LED의 구동전원으로 변환하는 전원변환부와; 상기 입력교류전원의 온오프를 센싱하는 전원온오프 센싱부와; 상기 전원온오프 센싱부의 출력 데이터인 온오프 정보를 저장하는 제2메모리와; 상기 입력교류전원을 직류전원으로 변환하는 교류/직류 변환기와; 상기 교류/직류변환기의 출력단자와 상기 제2메모리의 제2바이어스단자 사이에 연결되어 역방향 전류를 차단하는 제3역전류차단기와; 상기 제2메모리의 제2바이어스단자에 연결된 커패시터의 방전시간을 조절하는 커패시터 전압제어수단과; 상기 메모리에 저장된 상기 온오프 횟수나 온오프 시간을 근거로 상기 전력변환부의 구동을 제어하여 상기 LED의 밝기를 조정하는 조도제어부를 포함하여 이루어지는 것을 특징으로 한다.In addition, the LED lighting control circuit according to another embodiment of the present invention for achieving the above technical problem, and a power conversion unit for converting the input AC power to the driving power of the LED; A power on / off sensing unit configured to sense on / off of the input AC power supply; A second memory for storing on-off information which is output data of the power-on-off sensing unit; An AC / DC converter for converting the input AC power into DC power; A third reverse current breaker connected between an output terminal of the AC / DC converter and a second bias terminal of the second memory to block reverse current; Capacitor voltage control means for controlling a discharge time of a capacitor connected to a second bias terminal of the second memory; And an illuminance control unit configured to control driving of the power converter based on the number of on / off times or on / off times stored in the memory to adjust brightness of the LED.
이와 같이 이루어지는 본 발명에 의한 LED조명용 조명제어회로는 소용량의 커패시터로 입력교류전원의 온오프 정보를 측정하고 기억할 수 있으며, 세라믹 커패시터나 칩 저항과 같은 저가격의 간단한 전자부품을 이용하여 편리하게 조명 동작을 조절하는 효과가 있다.The lighting control circuit for LED lighting according to the present invention can measure and store ON / OFF information of the input AC power supply with a small capacitor, and conveniently operate lighting using low-cost simple electronic components such as ceramic capacitors and chip resistors. It is effective to control.
도 1은 본 발명에 따른 LED조명제어회로의 실시 예를 나타내는 회로도,1 is a circuit diagram showing an embodiment of an LED lighting control circuit according to the present invention;
도 2는 본 발명에 따른 LED조명제어회로의 다른 실시 예를 나타내는 회로도,2 is a circuit diagram showing another embodiment of the LED lighting control circuit according to the present invention;
도 3은 본 발명에 따른 LED조명제어회로의 또 다른 실시 예를 나타내는 회로도이다.3 is a circuit diagram showing still another embodiment of the LED lighting control circuit according to the present invention.
이하에서는 도면을 참조하여 본 발명에 의한 LED조명용 조명제어회로에 대하여 설명하기로 하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 예시하기 위한 것이며, 이로 인해 볼 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.Hereinafter, a lighting control circuit for LED lighting according to the present invention will be described with reference to the drawings, which is intended to illustrate the invention to be easily implemented by those skilled in the art to which the present invention pertains. This does not mean that the technical spirit and scope of the invention to be seen are limited.
도 1 및 도 2를 참고하면 본 발명에 따른 LED조명제어회로(1, 31)는 교류전원의 입력단자(3, 33)로 공급되는 전기의 온오프 상태를 전원온오프 센싱부(24, 54)가 센싱하고 이 데이터는 제1메모리(28, 58)에 저장되며, 조도제어부(12, 42)는 제1메모리에 저장된 데이터를 기준으로 전력변환부(2, 32)의 동작을 제어하여 LED(5, 35)의 밝기를 제어한다.Referring to FIGS. 1 and 2, the LED lighting control circuits 1 and 31 according to the present invention may provide an on / off state of electricity supplied to the input terminals 3 and 33 of AC power. ) And this data is stored in the first memory (28, 58), the illumination control unit 12, 42 controls the operation of the power converter (2, 32) based on the data stored in the first memory LED Control the brightness of (5, 35).
도 3을 참고하면 본 발명에 따른 LED조명제어회로(61)는 교류전원의 입력단자(63)로 공급되는 전기의 온오프 상태를 전원온오프 센싱부(84)가 센싱하고 이 데이터는 제2메모리(88)에 저장되고, 조도제어부(72)는 제2메모리(88)에 저장된 데이터를 기준으로 전력변환부(62)를 제어하여 LED(65)의 밝기를 제어한다.Referring to FIG. 3, the LED lighting control circuit 61 according to the present invention senses the on / off state of electricity supplied to the input terminal 63 of the AC power by the power ON / OFF sensing unit 84, and the data is second. The illuminance controller 72 controls the power converter 62 based on the data stored in the second memory 88 to control the brightness of the LED 65.
도 1 내지 도 3의 전력변환부(2, 32, 62)는 통상적으로 사용되는 가정용 AC전기인 AC100 ~ AC250V 전기를 LED조명등을 구동하기 전기로 변환하는 부분이다. 통상적으로 전력변환부(2, 32, 62)는 교류전원에 직접LED를 연결한 교류직접구동회로가 사용되거나, 다이오드, 변압기, 커패시터 등으로 구성된 벅부스트회로나 플라이벡 컨버터회로가 사용될 수 있으며 교류전원의 입력단자(3, 33, 63)로 전기를 공급받는다. The power converters 2, 32, and 62 of FIGS. 1 to 3 are parts for converting AC100 to AC250V electricity, which is commonly used household AC electricity, to electricity for driving LED lighting lamps. Typically, the power converter 2, 32, 62 may use an AC direct drive circuit in which an LED is directly connected to an AC power source, or may use a buck-boost circuit or flyback converter circuit composed of a diode, a transformer, and a capacitor. Electricity is supplied to the input terminals (3, 33, 63) of the power source.
전력변환부(2, 32, 62)는 교류직접구동회로 또는 벅부스트회로 또는 플라이벡회로 등에 따라 다양한 방법이 적용될 수 있으며 본 발명은 특정방법의 전력변환부(2, 32, 62)를 제한하지 않는다. 통상적으로 LED의 밝기를 제어하기 위해 LED에 흐르는 전류의 크기를 조정하거나 LED에 가해지는 펄스 전압의 듀티비를 조정하는 방법을 사용한다.The power converter 2, 32, 62 may be applied in various ways according to the AC direct drive circuit, the buck-boost circuit or the flyback circuit, etc. The present invention does not limit the power converter 2, 32, 62 of a specific method. Do not. Typically, in order to control the brightness of the LED, the method of adjusting the magnitude of the current flowing through the LED or the duty ratio of the pulse voltage applied to the LED is used.
도 1 내지 도 3의 전원온오프 센싱부(24, 54, 84)는, 교류전원의 입력단자(3, 33, 63)로 전기가 공급되고 있는지 센싱하는 부분이다. 전원온오프 센싱부는 입력단자(25, 55, 85)와 출력단자(26, 56, 86)를 가지고 있으며, 교류전원의 입력단자로 전기가 공급되고 있는지 아닌지 센싱하는 부분이다. 전원온오프 센싱부의 동작의 일례로 전기가 공급되고 있으면 5V를 출력하고, 전기가 공급되고 있지 않으면 0V를 출력할 수 있다. The power on / off sensing units 24, 54, 84 of FIGS. 1 to 3 are parts for sensing whether electricity is supplied to the input terminals 3, 33, 63 of the AC power source. The power on / off sensing unit has input terminals 25, 55, 85 and output terminals 26, 56, 86, and is a part for sensing whether electricity is supplied to an input terminal of an AC power source. As an example of the operation of the power on / off sensing unit, 5V may be output when electricity is supplied, and 0V may be output when electricity is not supplied.
상기 교류전원의 입력단자(3, 33, 63)로부터 전기가 공급되고 있지 않은 상태로 시간이 지나면, 결국, 도 1 내지 도 3의 회로 내부의 모든 단자에 전기가 공급되지 않게 된다. 따라서 전기공급의 유무를 센싱하기 위해서, 도 1 내지 도 3의 회로 내부의 단자의 전압을 측정해서 전원온오프 상태를 센싱할 수 있다. If time passes while the electricity is not supplied from the input terminals 3, 33, 63 of the AC power source, electricity is not supplied to all terminals in the circuits of FIGS. Accordingly, in order to sense the presence or absence of electricity supply, the power on / off state may be sensed by measuring the voltage of the terminal inside the circuit of FIGS. 1 to 3.
일례로 도 1 내지 도 3의 전원온오프 센싱부(24, 54, 84)의 입력단자(25, 55, 85)는 전력변환부(2, 32, 62)의 한 단자(6, 36, 66)나, 조도제어부(12, 42, 72)의 한 단자(10, 40, 70)나, 교류/직류변환기(7, 37, 67)의 한 단자(8, 38, 68)에 연결되어, 이들 단자의 전압을 측정하면 전원온오프 상태를 측정할 수 있다. 이들 단자는 교류전원의 입력단자(3, 33, 63)로부터 전기공급이 차단되면 전압이 0으로 간다.For example, the input terminals 25, 55, and 85 of the power on / off sensing units 24, 54, and 84 of FIGS. 1 to 3 may have one terminal 6, 36, and 66 of the power converters 2, 32, and 62. ) Or one terminal (10, 40, 70) of the illuminance control unit (12, 42, 72) or one terminal (8, 38, 68) of the AC / DC converter (7, 37, 67), By measuring the voltage across the terminals, you can measure the power-on and off states. These terminals have a voltage of zero when the electric supply is cut off from the input terminals 3, 33, 63 of the AC power source.
도 1 및 도 2의 교류/직류변환기(7, 37)는 조도제어부(12, 42) 또는 온오프센싱부(24, 54) 또는 메모리 리셋부(23, 53)와 제1메모리(28, 58)에 필요한 DC전기를 만들어 주는 회로이다. 바람직하게는 교류/직류변환기(7, 37)는 조도제어부(12, 42), 온오프센싱부(24, 54), 제1메모리(28, 58) 및 메모리 리셋부(23, 53) 등 모든 회로에 필요한 DC를 공급한다. The AC / DC converters 7 and 37 of FIGS. 1 and 2 include the illumination control unit 12 and 42 or the on-off sensing unit 24 and 54 or the memory reset unit 23 and 53 and the first memory 28 and 58. It is a circuit to make DC electricity necessary for). Preferably, the AC / DC converters 7 and 37 may include all of the illumination control units 12 and 42, the on-off sensing units 24 and 54, the first memories 28 and 58, and the memory reset units 23 and 53. Supply the necessary DC to the circuit.
도 3의 교류/직류변환기(67)는 조도제어부(72) 또는 전원온오프 센싱부(84) 와 제2메모리(88)에 필요한 DC전기를 만들어 주는 회로이다. 바람직하게는 교류/직류변환기(67)는 조도제어부(72), 전원온오프 센싱부(84) 및 제2메모리(88) 등 모든 회로에 필요한 DC를 공급한다. The AC / DC converter 67 of FIG. 3 is a circuit for making DC electricity required for the illumination control unit 72 or the power on / off sensing unit 84 and the second memory 88. Preferably, the AC / DC converter 67 supplies DCs necessary for all circuits such as the illumination control unit 72, the power on / off sensing unit 84, and the second memory 88.
도 1 내지 도 3의 교류/직류변환기(7, 37, 67)를 구현하는 일례로 교류전원의 입력단자(3, 33, 63)로 공급되는 AC100V ~ AC250V 내외의 교류전기를 변압기를 이용하여 수 볼트 내외의 교류전기로 변환한 다음 다이오드로 정류하고 커패시터로 필터링하여 5V내외의 DC전기를 얻는 회로가 사용될 수 있다.As an example of implementing the AC / DC converters 7, 37, and 67 of FIGS. 1 to 3, an AC electric current of about 100 V to 250 V AC supplied to the input terminals 3, 33, and 63 of an AC power source may be converted using a transformer. A circuit can be used that converts to alternating current in or out of volts, rectifies it into a diode and filters it with a capacitor to obtain a DC electricity of around 5V.
도 2에서와 같이 본 발명의 LED조명용 조명제어회로는 상기 교류/직류변환기(37)의 출력단자(39)와 상기 제1메모리(58)의 제1바이어스단자(VCC1) 사이에 연결되어 역방향 전류를 차단하는 제1역전류차단기(44)를 포함함을 특징으로 한다. As shown in FIG. 2, the lighting control circuit for LED lighting according to the present invention is connected between the output terminal 39 of the AC / DC converter 37 and the first bias terminal VCC1 of the first memory 58 to reverse the current. It characterized in that it comprises a first reverse current circuit breaker (44) for blocking.
도 3에서와 같이 본 발명의 LED조명용 조명제어회로는 상기 교류/직류변환기(67)의 출력단자(69)와 상기 제2메모리의 제2바이어스단자(VCC2) 사이에 연결되어 역방향 전류를 차단하는 제3역전류차단기(74)를 포함함을 특징으로 한다.As shown in FIG. 3, the LED lighting control circuit of the present invention is connected between the output terminal 69 of the AC / DC converter 67 and the second bias terminal VCC2 of the second memory to block reverse current. It characterized in that it comprises a third reverse current circuit breaker (74).
도 1 및 도 2의 제1바이어스단자(VCC1)는 제1메모리(28, 58)에 필요한 DC전기를 공급하기 위한 단자이다. 또한, 도 1 및 도 2의 제1메모리(28, 58)의 제1바이어스단자(VCC1)에 병열로 연결된 커패시터(13, 43)는 제1메모리(28, 58)에 공급되는 DC전원의 노이즈를 줄이고 일시적으로 제1메모리(28, 58)에 전하를 공급하는 역할을 한다. The first bias terminal VCC1 of FIGS. 1 and 2 is a terminal for supplying DC electricity required for the first memories 28 and 58. In addition, capacitors 13 and 43 connected in parallel to the first bias terminal VCC1 of the first memories 28 and 58 of FIGS. 1 and 2 are noises of DC power supplied to the first memories 28 and 58. Reduces the power supply temporarily to the first memory (28, 58).
도 3에서와 같이 제2메모리(88)의 제2바이어스단자(VCC2)에 병열로 연결된 커패시터(73)는 제2메모리(88)에 공급되는 DC전원의 노이즈를 줄이고 일시적으로 제2메모리(88)에 전하를 공급하는 역할을 한다. 이들 커패시터(13, 43, 73)의 일례로 세라믹 커패시터가 사용될 수 있다. 상용 세라믹 커패시터는 주로 1uF 이하의 값을 가진 제품이 많이 사용된다. As shown in FIG. 3, the capacitor 73 connected in parallel to the second bias terminal VCC2 of the second memory 88 reduces noise of the DC power supplied to the second memory 88 and temporarily stores the second memory 88. ) To supply charge. As an example of these capacitors 13, 43, 73, a ceramic capacitor can be used. Commercial ceramic capacitors are often used for products with a value of less than 1uF.
도 2의 제1역전류차단기(44)는 상기 제1바이어스단자(VCC1)에 붙어있는 커패시터(43)에 저장된 전하가 상기 교류/직류변환기(37)의 출력단자(39)로 역류하는 것을 방지하여 교류/직류변환기(37)의 출력전압이 낮아질 때 일시적으로 제1메모리(58)를 보호하는 역할을 한다. The first reverse current circuit breaker 44 of FIG. 2 prevents the charge stored in the capacitor 43 attached to the first bias terminal VCC1 from flowing back to the output terminal 39 of the AC / DC converter 37. As a result, when the output voltage of the AC / DC converter 37 decreases, the first memory 58 temporarily protects the first memory 58.
도 3의 제3역전류차단기(74)는 상기 제2바이어스단자(VCC2)에 붙어있는 커패시터(73)에 저장된 전하가 상기 교류/직류변환기(67)의 출력단자(69)로 역류하는 것을 방지하여 교류/직류변환기(67)의 출력전압이 낮아질 때 일시적으로 제2메모리(88)를 보호하는 역할을 한다. The third reverse current circuit breaker 74 of FIG. 3 prevents the charge stored in the capacitor 73 attached to the second bias terminal VCC2 from flowing back to the output terminal 69 of the AC / DC converter 67. As a result, when the output voltage of the AC / DC converter 67 decreases, the second memory 88 temporarily protects the second memory 88.
도 1 및 도 2의 제1메모리(28, 58)와 도 3의 제2메모리(88)는 전원온오프 센싱부(24, 54, 84)로부터 들어오는 신호를 받아서 전원의 온오프정보를 저장하고 있다. 바람직하게는 상기 제1메모리(28, 58)와 제2메모리(88)는 레지스터로 구성된 휘발성 메모리나 플레시 메모리가 사용될 수 있으며 온오프 정보를 이진수 형태로 저장하고 있다.The first memories 28 and 58 of FIGS. 1 and 2 and the second memories 88 of FIG. 3 receive signals from the power on / off sensing units 24, 54, and 84, and store on / off information of power. have. Preferably, the first memory 28, 58 and the second memory 88 may be a volatile memory or flash memory consisting of registers and stores the on-off information in binary form.
상기 온오프 정보는 상기 입력교류전원의 온오프 횟수나 온오프 시간이 될 수 있다. 온오프횟수는 AC전원입력단자로 전기가 차단된 횟수 혹은 연결된 횟수를 의미한다. 일례로 전원이 오프상태에서 한번 켜고, 다시 끄고, 다시 켜고, 다시 끄고, 다시 한번 켜면 온 횟수는 3회이고 오프횟수는 2회이다.The on-off information may be an on-off frequency or an on-off time of the input AC power. The on / off frequency means the number of times the electricity is cut off or connected to the AC power input terminal. For example, if the power is turned off once, turn it off again, turn it on again, turn it off again, and turn it on again, the turn-on is three times and the turn-off is two times.
온오프시간은 전원을 켜고 끄는 상태를 반복할 때 각 상태에서 온시간 혹은 오프시간을 의미한다, 온시간은 켜진 시간을 의미하고, 오프시간은 꺼진 시간을 의미한다. 예를 들면 전원이 오프상태에서 켜서 1.5초 있다가 꺼지고 1.2초 있다가 다시 켜지면 온시간은 1.5초이며 오프시간은 1.2초이다.The on-off time means on time or off time in each state when the power is repeatedly turned on and off. On time means on time and off time means off time. For example, when the power is turned off, the power is turned on for 1.5 seconds, then turned off for 1.2 seconds, and then turned on again.
상기 제1메모리(28, 58)는 상기 메모리 리셋부(23, 53)의 출력전압이 미리 설정된 전압 이하로 저하되는 것에 의하여 리셋되어 상기 온오프 정보가 초기화되는 것을 특징으로 한다. The first memories 28 and 58 may be reset when the output voltages of the memory reset units 23 and 53 are lowered below a preset voltage to initialize the on / off information.
도 1 및 도 2의 제1메모리(28, 58)의 리셋단자(rst)는 제1메모리(28, 58)의 내용을 리셋시키기 위한 단자이다. 제1메모리(28, 58)가 리셋되면 제1메모리(28, 58)의 내부에 저장된 온오프 정보인 온오프횟수와 온오프시간은 모두 초기화된다. 초기화의 일례로 초기화 되면 내부값은 모두 0으로 된다. 일례로 상기 제1메모리(28, 58)는 리셋단자(rst)의 전압이 1V이하로 내려가면 리셋되도록 사전에 만들어질 수 있다. The reset terminal rst of the first memories 28 and 58 of FIGS. 1 and 2 is a terminal for resetting the contents of the first memories 28 and 58. When the first memories 28 and 58 are reset, both the on-off frequency and the on-off time, which are on-off information stored in the first memories 28 and 58, are initialized. When initialized as an example of initialization, all internal values are zero. For example, the first memories 28 and 58 may be made in advance to be reset when the voltage of the reset terminal rst drops below 1V.
도 3의 제2메모리(88)는 제2바이어스단자(VCC2)를 가지고 있으며, 제2바이어스단자(VCC2)를 통해 제2메모리(88)에 필요한 DC전기를 공급하며, 상기 제2메모리(88)의 제2바이어스단자(VCC2) 전압이 미리 설정된 전압 이하로 저하되는 것에 의하여 리셋되어 상기 온오프 횟수나 온오프 시간이 초기화 되는 것을 특징으로 한다.The second memory 88 of FIG. 3 has a second bias terminal VCC2, and supplies DC electricity required to the second memory 88 through the second bias terminal VCC2, and supplies the second memory 88. The second bias terminal (VCC2) of () is reset by being lowered below a predetermined voltage, and the on-off frequency or on-off time is initialized.
상기 제2바이어스단자(VCC2)의 전압이 사전에 설정한 일정한 전압 이하로 내려가면 제2메모리(88)의 내용은 리셋되고 다음에 켜질 때 초기값으로 설정된다. 일례로 상기 제2메모리(88)는 정상상태에서 5V가 공급되고 있고 1V이하로 내려가면 리셋 되도록 설계될 수 있다. 초기화의 일례로 초기화되면 내부값은 모두 0으로 되도록 할 수 있다.When the voltage of the second bias terminal VCC2 falls below a predetermined predetermined voltage, the content of the second memory 88 is reset and set to an initial value when it is next turned on. For example, the second memory 88 may be designed to be reset when 5V is supplied in a normal state and goes below 1V. As an example of initialization, the internal values can all be zero.
도 1 및 도 2의 조도제어부(12, 42)는 상기 제1메모리(28)에 저장된 상기 온오프 정보를 근거로 상기 전력변환부(2, 32)의 동작을 제어하여 상기 LED(5, 35)의 밝기를 조정한다. The illuminance controllers 12 and 42 of FIGS. 1 and 2 control the operations of the power converters 2 and 32 based on the on / off information stored in the first memory 28 to control the LEDs 5 and 35. Adjust the brightness of).
또한, 도 3의 조도제어부(72)는 상기 제2메모리(88)에 저장된 상기 온오프 정보를 근거로 전력변환부(62)의 동작을 제어하여 LED(65)의 밝기를 조정한다. In addition, the illuminance controller 72 of FIG. 3 adjusts the brightness of the LED 65 by controlling the operation of the power converter 62 based on the on / off information stored in the second memory 88.
조도제어부(12, 42, 72)의 동작의 일례로, 온 횟수가 1회일 때 LED 최대밝기의 100%를 출력하게 하고, 온 횟수가 2회 일 때 LED 최대밝기의 70%를 출력하도록 하고, 온 횟수가 3회 일 때 LED 최대밝기의 30%만 출력하도록 하는 동작을 들 수 있다. 온 시간과 오프시간을 이용하여 밝기를 제어할 수도 있다. 다른 일례로 조도제어부(12, 42, 72)는 온시간이 길어지면 비례해서 밝기가 감소 되도록 하는 신호를 출력할 수 있다. As an example of the operation of the illuminance control unit 12, 42, 72, to output 100% of the maximum brightness of the LED when the number of turns is one time, and to output 70% of the maximum brightness of the LED when the number of turns is two times, For example, when the number of turns is 3, only 30% of the maximum brightness of the LED is output. Brightness can also be controlled using on and off times. As another example, the illuminance controllers 12, 42, and 72 may output a signal to decrease the brightness in proportion to the on time.
메모리 리셋부(23, 53)는 입력교류전원이 오프된 후 일정시간이 지나면 상기 제1메모리(28, 58)의 리셋단자(rst)에 전압의 변화를 유발시켜서 제1메모리(28, 58)가 리셋되어 내용이 초기화 되도록 한다.The memory reset units 23 and 53 cause a voltage change to the reset terminal rst of the first memories 28 and 58 after a predetermined time after the input AC power is turned off, thereby causing the first memories 28 and 58 to be changed. Is reset so that the contents are initialized.
입력교류전원이 오프되면 메모리 리셋부(23, 53)의 입력단자(18, 48)에 전압의 변화가 발생하고 이를 트리거신호로 하여 일정시간이 지나면 메모리 리셋부(23, 53)의 출력단자(19, 49)에 상기 제1메모리(28, 58)를 리셋시키는 전압을 유발하게 된다. When the input AC power is turned off, a voltage change occurs at the input terminals 18 and 48 of the memory reset units 23 and 53, and when a predetermined time passes, the output terminals of the memory reset units 23 and 53 are changed. 19 and 49 cause a voltage to reset the first memories 28 and 58.
상기 메모리 리셋부(23, 53)는 역방향 전류를 차단하는 제2역전류차단기(20, 50)와 상기 제2역전류차단기(20, 50)와 직열로 연결되며 상기 메모리 리셋부(23, 53)의 입력단자(18,48)의 전압이 차단되면 시간에 따라 상기 메모리 리셋부(23,53)의 출력단자(19,49)의 전압이 변화하는 타이머회로(29, 59)를 포함하는 것을 특징으로 한다.The memory reset units 23 and 53 are connected in series with the second reverse current circuit breakers 20 and 50 and the second reverse current circuit breakers 20 and 50 to block reverse current, and the memory reset units 23 and 53 are connected in series. Including the timer circuit (29, 59) that the voltage of the output terminal (19, 49) of the memory reset unit (23, 53) changes over time when the voltage of the input terminal (18, 48) of It features.
상기 제1역전류차단기(44)와 제2역전류차단기(20,50)와 제3역전류차단기(74)는 두 단자사이의 역방향전류의 흐름을 차단하는 소자이며, 역방향전류를 차단하는 균등한 동작을 하는 다수의 전자회로로 대치될 수 있음은 당 업자들에게 잘 알려진 주지의 사실이다. 그리고 상기 타이머회로(29, 59)의 일례로 상기 타이머회로는 저항과 커패시터의 병열회로로 구성될 수 있다. The first reverse current circuit breaker 44, the second reverse current circuit breakers 20 and 50, and the third reverse current circuit breaker 74 are elements that block the flow of reverse current between two terminals, and equally block the reverse current. It is well known to those skilled in the art that it can be replaced by a plurality of electronic circuits that perform one operation. In addition, as an example of the timer circuits 29 and 59, the timer circuit may include a parallel circuit of a resistor and a capacitor.
상기 교류전원의 입력단자(3, 33, 63)로부터 공급되는 전원이 차단되어 상기 제2역전류차단기(20, 50)의 바이어스전압(VCC2)이 턴온전압 이하로 가면 타이머회로(29, 59)에 공급되는 전원이 차단되고 타이머회로(29, 59)의 출력단자(19, 49)의 전압은 시간에 따라 변화하게 된다. 타이머회로의 출력전압은 교류전원의 입력단자(3, 33, 63) 전압이 차단된 후 시간 시간이 얼마나 진행되었는지를 측정하기 위한 물리량이다. When the power supplied from the input terminals 3, 33, 63 of the AC power is cut off and the bias voltage VCC2 of the second reverse current breaker 20, 50 goes below the turn-on voltage, the timer circuit 29, 59. The power supplied to the power supply is cut off, and the voltages of the output terminals 19 and 49 of the timer circuits 29 and 59 change with time. The output voltage of the timer circuit is a physical quantity for measuring how much time has elapsed since the voltage of the input terminals 3, 33, 63 of the AC power source was cut off.
타이머회로(29, 59)는 제1메모리(28, 58)가 리셋되는 시간을 조절하는 회로이다. 상기 타이머회로(29, 59)의 일례로 도1 및 도2의 저항(21, 51)과 커패시터(22, 52)로 이루어진 저항 커패시터 병열회로를 사용할 수 있다. 타이머회로의 입력단자(17, 47)에 전류공급이 차단되면 시간이 지남에 따라 커패시터(22, 52)에 저장된 전하가 저항(21, 51)과 제1메모리(28, 58)를 통해 방전되고, 타이머회로(29, 59)의 출력단자(49)의 전압은 낮아지게 되고 메모리 리셋부(23, 53)의 출력전압도 낮아지게 된다.The timer circuits 29 and 59 are circuits for adjusting the time for which the first memories 28 and 58 are reset. As an example of the timer circuits 29 and 59, a resistor capacitor parallel circuit including the resistors 21 and 51 and the capacitors 22 and 52 of FIGS. 1 and 2 may be used. When the current supply to the input terminals 17 and 47 of the timer circuit is cut off, the charge stored in the capacitors 22 and 52 is discharged through the resistors 21 and 51 and the first memories 28 and 58 as time passes. The voltage of the output terminals 49 of the timer circuits 29 and 59 is lowered, and the output voltages of the memory reset units 23 and 53 are also lowered.
상기 제1메모리(28, 58) 동작의 일례로 메모리 리셋부(23, 53)의 출력전압이 사전에 설정된 기준전압 이하로 내려가면 상기 제1메모리(28, 58)의 내용은 초기화된다. As an example of operations of the first memories 28 and 58, when the output voltages of the memory reset units 23 and 53 fall below a preset reference voltage, the contents of the first memories 28 and 58 are initialized.
타이머회로(29, 59)를 이용한 리셋시간 조절의 일례로, 교류전원이 온 상태일 경우 제1메로리(28, 58)의 리셋단자(rst)의 전압이 5V이고, 리셋단자(rst)의 전압이 1V이하로 내려가면 제1메모리(28, 58)가 리셋되며, 타이머 내부의 커패시터(22, 52)의 용량이 100nF이고, 타이머 내부의 저항(21, 51)값이 5MOhm이고, 제1메모리(28, 58)의 리셋단자(rst)의 입력저항이 100MOhm이고 제1메모리(28, 58)의 리셋단자(rst)의 입력케페시턴스가 100pF이면, 입력교류전원이 차단된 이후 리셋단자(rst)의 전압은 5exp(-t/tau)로 감소하며, 여기서 t는 시간이고, tau=전체저항값(1/(1/100MOhm+1/5MOhm)) x 전체커패시터값(100nF+100pF)이다. As an example of adjusting the reset time using the timer circuits 29 and 59, when the AC power is on, the voltage of the reset terminal rst of the first memory 28 and 58 is 5V and the voltage of the reset terminal rst. When the voltage falls below 1 V, the first memories 28 and 58 are reset, the capacitors 22 and 52 in the timer have a capacity of 100 nF, the resistors 21 and 51 in the timer have a value of 5 MOhm, and the first memory. If the input resistance of the reset terminal rst of (28, 58) is 100 MOhm and the input capacitance of the reset terminal rst of the first memory (28, 58) is 100 pF, the reset terminal (after the AC power supply is cut off) rst) decreases to 5exp (-t / tau), where t is time and tau = total resistance value (1 / (1/100 MOhm + 1 / 5MOhm)) x total capacitor value (100nF + 100pF) .
타이머회로(29, 59)를 도1 및 도2와 같이 구성할 때, 일례로 5V에서 1V까지 전압이 낮아지는 시간이 약1.6초이면, 벽면스위치를 끄고나서 1.6초 이상 시간이 지나면 상기 제1메모리의 내용이 리셋된다. 리셋시간은 저항값(21, 51)과 커패시터값(22,52)을 조정해서 변경할 수 있다. When the timer circuits 29 and 59 are configured as shown in Figs. 1 and 2, for example, when the time for lowering the voltage from 5V to 1V is about 1.6 seconds, the first switch is made after 1.6 seconds or more after turning off the wall switch. The contents of the memory are reset. The reset time can be changed by adjusting the resistance values 21 and 51 and the capacitor values 22 and 52.
상기 커패시터 전압제어수단(75)은 상기 제2바이어스단자(VCC2)의 전압을 제어하기 위한 수단이며 일례로 저항소자를 사용할 수 있다. The capacitor voltage control means 75 is a means for controlling the voltage of the second bias terminal VCC2 and may use a resistance element as an example.
교류전원의 입력단자(33)로부터 전기가 공급되지 않으면 상기 제2바이어스단자(VCC2)의 전압이 감소되는 시간을 조절하는 기능을 가지는 커패시터 전압제어수단(75)은 제2메모리(88)의 제2바이어스단자(VCC2)에 연결되어 제2메모리의 리셋시간을 조절한다. The capacitor voltage control means 75 having a function of controlling the time when the voltage of the second bias terminal VCC2 is reduced when no electricity is supplied from the input terminal 33 of the AC power source is the second memory 88. It is connected to the 2 bias terminal VCC2 to adjust the reset time of the second memory.
상기 커패시터 전압제어수단(75)을 이용한 리셋시간 조절의 일례로, 교류전원의 입력단자(63)의 전압이 온 상태일 경우 제2바이어스단자(VCC2)의 전압이 5V이고, 제2바이어스단자(VCC2)의 전압이 1V이하로 내려가면 제2메모리(88)가 리셋되며, 케페시터 전압제어수단(75)으로 사용되는 저항값이 5MOhm이고, 제2바이어스단자(VCC2)의 입력저항이 100MOhm이고, 제2메모리(88)의 전원단자 커패시터(73)의 용량이 100nF이고, 제2바이어스단자(VCC2)의 입력케페시턴스가 100pF이면, 입력교류전원이 차단된 이후 제2바이어스단자(VCC2)의 전압은 5exp(-t/tau)로 감소하며, 여기서 t는 시간이고, tau=전체저항값(1/(1/100MOhm+1/5MOhm)) x 전체커패시터값(100nF+100pF)이다. 이 경우 5V에서 1V까지 전압이 낮아지는 시간이 1.6초이면, 벽면스위치를 끄고 나서 1.6초 이상 시간이 지나면 제2메모리(88)의 내용이 리셋된다.As an example of adjusting the reset time using the capacitor voltage control means 75, when the voltage of the input terminal 63 of the AC power is on, the voltage of the second bias terminal VCC2 is 5V, and the second bias terminal ( When the voltage of VCC2) falls below 1 V, the second memory 88 is reset, the resistance value used as the capacitor voltage control means 75 is 5 MOhm, and the input resistance of the second bias terminal VCC2 is 100 MOhm. When the capacity of the power terminal capacitor 73 of the second memory 88 is 100 nF and the input capacitance of the second bias terminal VCC2 is 100 pF, the second bias terminal VCC2 after the input AC power is cut off. The voltage at is reduced to 5 exp (-t / tau), where t is time and tau = total resistance value (1 / (1/100 MOhm + 1 / 5MOhm)) x total capacitor value (100nF + 100pF). In this case, if the time to decrease the voltage from 5V to 1V is 1.6 seconds, the contents of the second memory 88 are reset when the time is 1.6 seconds or more after turning off the wall switch.
이상과 같이, 본 발명에 따른 LED조명제어회로에 의하면 교류전원이 차단되었을 때, 회로에 저장된 전하를 효과적으로 사용하여 교류전원의 온오프정보를 측정하고 기억할 수 있으며 리셋시간을 쉽게 조절할 수 있다. As described above, according to the LED lighting control circuit according to the present invention, when the AC power is cut off, the on-off information of the AC power can be measured and stored by effectively using the charge stored in the circuit, and the reset time can be easily adjusted.
또한, 본 발명의 LED조명제어회로는 커패시터나 저항과 같은 간단한 전자부품을 이용하여 편리하게 밝기조절동작을 수행할 수 있는 장점이 있다.In addition, the LED lighting control circuit of the present invention has the advantage that it is possible to conveniently perform the brightness adjustment operation by using a simple electronic component such as a capacitor or a resistor.

Claims (10)

  1. LED 조명용 조명제어회로에 있어서,In the lighting control circuit for LED lighting,
    입력교류전원을 LED(5)의 구동전원으로 변환하는 전력변환부(2)와;A power converter 2 for converting the input AC power into the driving power of the LED 5;
    상기 입력교류전원의 온오프를 센싱하는 전원온오프 센싱부(24)와;A power on / off sensing unit (24) for sensing the on / off of the input AC power;
    상기 전원온오프 센싱부의 출력 데이터인 온오프 정보를 저장하는 제1메모리(28)와;A first memory 28 for storing on-off information which is output data of the power-on-off sensing unit;
    입력교류전원을 직류전원으로 변환하는 교류/직류변환기(7)와;An AC / DC converter 7 for converting input AC power into DC power;
    상기 입력교류전원이 오프된 후 기 설정된 시간이 경과될 때 상기 제1메모리(28)를 리셋시키는 메모리 리셋부(23)와;A memory reset unit 23 for resetting the first memory 28 when a predetermined time elapses after the input AC power is turned off;
    상기 제1메모리(28)에 저장된 상기 온오프 정보를 근거로 상기 전력변환부(2)의 동작을 제어하여 상기 LED(5)의 밝기를 조정하는 조도제어부(12);를 포함하여 이루어지는 것을 특징으로 하는 LED 조명용 조명제어회로.And an illuminance control unit 12 controlling the operation of the power converter 2 based on the on / off information stored in the first memory 28 to adjust the brightness of the LED 5. Lighting control circuit for LED lighting.
  2. LED 조명용 조명제어회로에 있어서,In the lighting control circuit for LED lighting,
    입력교류전원을 LED(35)의 구동전원으로 변환하는 전력변환부(32)와;A power converter 32 converting the input AC power into the driving power of the LED 35;
    상기 입력교류전원의 온오프를 센싱하는 전원온오프 센싱부(54)와;A power on / off sensing unit 54 for sensing the on / off of the input AC power;
    상기 전원온오프 센싱부의 출력 데이터인 온오프 정보를 저장하는 제1메모리(58)와;A first memory 58 for storing on-off information which is output data of the power-on-off sensing unit;
    입력교류전원을 직류전원으로 변환하는 교류/직류변환기(37)와;An AC / DC converter 37 for converting input AC power into DC power;
    상기 입력교류전원이 오프된 후 기 설정된 시간이 경과될 때 상기 제1메모리(58)를 리셋시키는 메모리 리셋부(53)와;A memory reset unit 53 for resetting the first memory 58 when a predetermined time elapses after the input AC power is turned off;
    상기 제1메모리(58)에 저장된 상기 온오프 정보를 근거로 상기 전력변환부(32)의 동작을 제어하여 상기 LED(35)의 밝기를 조정하는 조도제어부(42)와;An illuminance controller 42 for controlling the operation of the power converter 32 based on the on / off information stored in the first memory 58 to adjust the brightness of the LED 35;
    상기 교류/직류변환기의 출력단자와 상기 제1메모리(58)의 제1바이어스단자(VCC1) 사이에 연결되어 역방향 전류를 차단하는 제1역전류차단기(44);를 포함하여 이루어지는 것을 특징으로 하는 LED 조명용 조명제어회로.And a first reverse current circuit breaker 44 connected between the output terminal of the AC / DC converter and the first bias terminal VCC1 of the first memory 58 to block reverse current. Lighting control circuit for LED lighting.
  3. 제1항 또는 제2항에 있어서,The method according to claim 1 or 2,
    상기 온오프 정보는 상기 입력교류전원의 온오프 횟수나 온오프 시간을 포함하는 것을 특징으로 하는 LED 조명용 조명제어회로.The on-off information includes an on-off frequency or an on-off time of the input AC power supply.
  4. 제1항 또는 2항에 있어서,The method according to claim 1 or 2,
    상기 메모리 리셋부(23, 53)는 역방향 전류를 차단하는 제2역전류차단기(20, 50)와;The memory reset unit (23, 53) and the second reverse current circuit breaker (20, 50) for blocking the reverse current;
    상기 제2역전류차단기와 직열로 연결되며 상기 메모리 리셋부의 입력단자(18, 48)의 전압이 차단되면 시간에 따라 상기 메모리 리셋부(23, 53)의 출력전압이 변화하는 타이머회로(29, 59)를 포함하는 것을 특징으로 하는 LED 조명용 조명제어회로.Timer circuit 29, which is connected in series with the second reverse current circuit breaker and whose output voltages of the memory reset units 23 and 53 change with time when the voltages of the input terminals 18 and 48 of the memory reset unit are cut off, 59) LED lighting control circuit comprising a.
  5. 제1항 또는 제2항에 있어서,The method according to claim 1 or 2,
    상기 제1메모리(28,58)는 상기 메모리 리셋부(23,53)의 출력전압이 미리 설정된 전압 이하로 저하되는 것에 의하여 리셋되어 상기 온오프 정보가 초기화되는 것을 특징으로 하는 LED 조명용 조명제어회로.The first memory (28, 58) is reset by the output voltage of the memory reset unit (23, 53) is lowered below a predetermined voltage, the on-off information is initialized LED lighting control circuit, characterized in that .
  6. 제4항에 있어서,The method of claim 4, wherein
    상기 타이머회로(29, 59)는 저항과 커패시터의 병열회로인 것을 특징으로 하는 LED 조명용 조명제어회로.The timer circuit (29, 59) is a lighting control circuit for LED lighting, characterized in that the parallel circuit of a resistor and a capacitor.
  7. LED 조명용 조명제어회로에 있어서,In the lighting control circuit for LED lighting,
    입력교류전원을 LED(65)의 구동전원으로 변환하는 전원변환부(62)와;A power conversion unit 62 for converting the input AC power into the driving power of the LED 65;
    상기 입력교류전원의 온오프를 센싱하는 전원온오프 센싱부(84)와;A power on / off sensing unit (84) for sensing the on / off of the input AC power;
    상기 전원온오프 센싱부의 출력 데이터인 온오프 정보를 저장하는 제2메모리(88)와;A second memory 88 for storing on-off information which is output data of the power-on-off sensing unit;
    상기 입력교류전원을 직류전원으로 변환하는 교류/직류 변환기(6)와;An AC / DC converter 6 for converting the input AC power into DC power;
    상기 교류/직류변환기의 출력단자와 상기 제2메모리의 제2바이어스단자(VCC2) 사이에 연결되어 역방향 전류를 차단하는 제3역전류차단기(74)와;A third reverse current breaker 74 connected between an output terminal of the AC / DC converter and a second bias terminal VCC2 of the second memory to block reverse current;
    상기 제2메모리(88)의 제2바이어스단자에 연결된 커패시터의 방전시간을 조절하는 커패시터 전압제어수단(75)과;Capacitor voltage control means (75) for controlling a discharge time of a capacitor connected to the second bias terminal of the second memory (88);
    상기 메모리(88)에 저장된 상기 온오프 횟수나 온오프 시간을 근거로 상기 전력변환부(62)의 구동을 제어하여 상기 LED(65)의 밝기를 조정하는 조도제어부(72);를 포함하여 이루어지는 것을 특징으로 하는 LED 조명용 조명제어회로.And an illuminance control unit 72 that controls the driving of the power converter 62 based on the number of on / off times or on / off times stored in the memory 88 to adjust the brightness of the LED 65. Lighting control circuit for LED lighting, characterized in that.
  8. 제7항에 있어서, The method of claim 7, wherein
    상기 제2메모리(88)는 상기 제2메모리의 제2바이어스단자의 전압이 미리 설정된 전압 이하로 저하되는 것에 의하여 리셋되어 상기 온오프 정보가 초기화 되는 것을 특징으로 하는 LED 조명용 조명제어회로.And the second memory (88) is reset when the voltage of the second bias terminal of the second memory is lowered below a predetermined voltage to initialize the on / off information.
  9. 제7항에 있어서, The method of claim 7, wherein
    상기 커패시터 전압제어수단(75)은 저항소자인 것을 특징으로 하는 LED 조명용 조명제어회로.The capacitor voltage control means (75) is a lighting control circuit for LED lighting, characterized in that the resistance element.
  10. 제7항에 있어서,The method of claim 7, wherein
    상기 온오프 정보는 상기 입력교류전원의 온오프 횟수나 온오프 시간을 포함하는 것을 특징으로 하는 LED 조명용 조명제어회로.The on-off information includes an on-off frequency or an on-off time of the input AC power supply.
PCT/KR2012/007707 2011-09-28 2012-09-25 Lighting control circuit for led lighting WO2013048085A1 (en)

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