WO2024040983A1 - 一种同时兼容可控硅调光和智能调光的led光源及灯具 - Google Patents

一种同时兼容可控硅调光和智能调光的led光源及灯具 Download PDF

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Publication number
WO2024040983A1
WO2024040983A1 PCT/CN2023/087743 CN2023087743W WO2024040983A1 WO 2024040983 A1 WO2024040983 A1 WO 2024040983A1 CN 2023087743 W CN2023087743 W CN 2023087743W WO 2024040983 A1 WO2024040983 A1 WO 2024040983A1
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unit
dimming
module
thyristor
silicon
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PCT/CN2023/087743
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English (en)
French (fr)
Inventor
李照华
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深圳市明微电子股份有限公司
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Publication of WO2024040983A1 publication Critical patent/WO2024040983A1/zh

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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]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
    • 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
    • H05B45/32—Pulse-control circuits
    • 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
    • H05B45/345—Current stabilisation; Maintaining constant current
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/165—Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
    • 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
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Definitions

  • the present invention relates to the technical field of LED chips, and in particular to an LED light source and lamp that are compatible with both silicon-controlled dimming and intelligent dimming.
  • LED lighting fixtures have reached the dimming level of traditional tungsten filament lamps on thyristor dimmers in the field of dimming technology with the development of technology.
  • smart lighting technology has become quite mature.
  • LED power drives or LED lamps have made great progress, none can effectively meet the needs of thyristor dimming and realize intelligent dimming. Light methods and products.
  • the purpose of the present invention is to provide an LED light source that is compatible with both silicon-controlled dimming and intelligent dimming in that the current LED lighting technology cannot be compatible with both silicon-controlled dimming and intelligent dimming.
  • LED light sources or LED lamps can not only meet the dimming needs of the silicon-controlled dimmer but also achieve intelligent dimming on the thyristor dimmer.
  • Embodiments of the present invention provide an LED light source that is compatible with both silicon-controlled dimming and intelligent dimming, including a power supply unit, an intelligent dimming unit, a constant current unit, a thyristor current output unit and a central control unit.
  • the power supply unit The output end is connected to the input end of the central control unit, the input end of the intelligent dimming unit and the input end of the constant current unit, and the central control unit communicates with the intelligent dimming unit in two phases, so The output end of the central control unit is also connected to the input end of the thyristor current output unit, the output end of the intelligent dimming unit is also connected to the input end of the constant current unit, and the thyristor current output The output end of the unit is connected to the input end of the power supply unit, wherein the central control unit is used to collect the thyristor phase cutting angle of the power supply unit, and generate a feedback signal according to the thyristor phase cutting angle and send it to the Intelligent dimming unit; the intelligent dimming unit is used to receive control instructions from the IOT terminal, generate a dimming signal according to the control instructions and the feedback signal and send it to the constant current unit, and is also used to generate a dimming signal according to the control instruction and the feedback signal.
  • the signal generates and adjusts the signal and sends it to the central control unit; the constant current unit is used to adjust the lighting state according to the dimming signal; the central control unit is also used to adjust the thyristor phase cutting angle according to the
  • the signal generates a thyristor current control signal and sends it to the thyristor current output unit; the thyristor current output unit is used to adjust the output current according to the thyristor current control signal.
  • the power supply unit includes a silicon-controlled dimmer, a rectifier circuit and an isolation diode D1.
  • the input of the silicon-controlled dimmer The terminal is connected to an AC input signal, the output end of the thyristor dimmer is connected to the input end of the rectifier circuit, the first end of the rectifier circuit is connected to the input end of the central control unit, and the rectifier circuit is connected to the input end of the rectifier circuit.
  • the second end is connected to the anode of the isolation diode D1, and the cathode of the isolation diode D1 is connected to the input end of the intelligent dimming unit and the input end of the constant current unit.
  • the AC input signal passes through the controllable The silicon dimmer and the rectifier circuit then output a chopped voltage signal.
  • the intelligent dimming unit includes a power selection module, an AC-DC power module, an LDO power module and an intelligent control module.
  • the power selection module The input end of the module is connected to the output end of the power supply unit, and the output end of the power selection module is connected to the input end of the AC-DC power module and the input end of the LDO power module.
  • the output terminal and the output terminal of the LDO power module are connected to the input terminal of the intelligent control module, and the power selection module selects the AC-DC power module and the LDO power module according to the output voltage of the power supply unit.
  • the central control unit includes a silicon-controlled phase detection module and a central core control module.
  • the input terminal of the silicon-controlled phase detection module Connect the power supply unit, the output end of the thyristor phase detection module is connected to the central core control module, the central core control module communicates with the intelligent control module in two directions, and the thyristor phase detection module is used to Collect the thyristor phase cutting angle of the power supply unit; the central core control module is used to send the feedback signal to the intelligent control module when the thyristor phase cutting angle is less than the first preset threshold, At the same time, the thyristor current control signal is sent to the thyristor current output unit to control the thyristor current output unit to increase the output current.
  • the thyristor current is sent.
  • the control signal is sent to the thyristor current output unit to control the thyristor current output unit to reduce the output current, and the first preset threshold is smaller than the second preset threshold.
  • the constant current unit includes an LED constant current module and an LED lamp group module, and the input end of the LED constant current module is connected to the intelligent Control module, the output end of the LED constant current module is connected to the input end of the LED lamp group module, the input end of the LED lamp group module is also connected to the output end of the power supply unit, and the intelligent control module is receiving When the feedback signal is received, a standby instruction is sent to the LED constant current module, and the LED constant current module turns off the LED lamp group module according to the standby instruction.
  • the intelligent control module when the control instruction is standby or low brightness, the intelligent control module generates the adjustment signal according to the control instruction to the
  • the central core control module sends a thyristor current control signal to the thyristor current output unit according to the adjustment signal to control the thyristor current output unit to reduce the output current.
  • the silicon-controlled phase detection module includes a resistor R2, a resistor R3 and a clamping tube DZ1, and one end of the resistor R2 is connected to the power supply At the output end of the unit, the other end of the resistor R2 is connected to one end of the resistor R3, the negative electrode of the clamp tube DZ1 and the central core control module. The other end of the resistor R3 and the positive electrode of the clamp tube DZ1 are grounded.
  • an LED lamp including the above-mentioned LED light source that is compatible with both silicon-controlled dimming and intelligent dimming.
  • the LED light source provided by the present invention that is compatible with both silicon-controlled dimming and intelligent dimming includes a power supply unit, an intelligent dimming unit, a constant current unit, and a silicon-controlled current output unit. and the central control unit; the central control unit collects and judges the voltage waveform of the thyristor phase angle inside the power supply unit, and outputs different signals at different phase angle values to the intelligent dimming unit and thyristor current control unit to adjust Control the working modes of different circuit units; the intelligent dimming unit can match different power supply modes at different phase angles of the thyristor.
  • the intelligent dimming unit can match different power supply modes at different phase angles of the thyristor.
  • Figure 1 shows a schematic diagram of an LED light source compatible with both silicon-controlled dimming and intelligent dimming provided by the present invention
  • Figure 2 shows a circuit diagram of an LED light source that is compatible with both silicon-controlled dimming and intelligent dimming provided in Embodiment 1 of the present invention
  • Figure 3 shows a circuit diagram of an LED light source that is compatible with both silicon-controlled dimming and intelligent dimming provided in Embodiment 2 of the present invention
  • Figure 4 shows a circuit diagram of an LED light source that is compatible with both silicon-controlled dimming and intelligent dimming provided in Embodiment 3 of the present invention
  • Figure 5 shows the circuit diagram of the thyristor output current module in Figure 1;
  • Figure 6 shows the relevant waveform when the phase cutting angle of the thyristor of the power supply unit is the maximum phase angle of the thyristor
  • Figure 7 shows the relevant waveform when the phase cutting angle of the thyristor of the power supply unit is the middle phase angle of the thyristor
  • Figure 8 shows the relevant waveform when the phase cutting angle of the thyristor of the power supply unit is the minimum phase angle of the thyristor.
  • the invention provides a power supply unit, an intelligent dimming unit, a constant current unit, and a thyristor current
  • the output unit and the central control unit are both compatible with thyristor dimming and intelligent dimming LED light sources; the central control unit collects and judges the voltage waveform of the thyristor phase angle inside the power supply unit, and outputs different phase angle values.
  • Different signals go to the intelligent dimming unit and the thyristor current control unit to adjust and control the working modes of different circuit units; the intelligent dimming unit can match different power supply modes at different phase angles of the thyristor, and during the thyristor dimming process , it is a normal working state to realize the control of the constant current unit by the intelligent dimming unit. As a result, compatible control of thyristor dimming and intelligent dimming can be achieved to meet user needs.
  • Figure 1 shows a schematic diagram of an LED light source compatible with both silicon-controlled dimming and intelligent dimming provided by the present invention.
  • the LED light source provided by the present invention that is compatible with both thyristor dimming and intelligent dimming includes a power supply unit 10, an intelligent dimming unit 20, a constant current unit 30, a thyristor current output unit 40 and a central Control unit 50.
  • the central control unit 50 is used to collect the thyristor phase cutting angle of the power supply unit, generate a feedback signal according to the thyristor phase cutting angle, and send it to the intelligent dimming unit 20; the intelligent dimming unit 20 is used to receive control from the IOT terminal.
  • the control unit 50 is also used to generate a thyristor current control signal according to the thyristor phase cutting angle or the adjustment signal and send it to the thyristor current output unit 40; the thyristor current output unit 40 is used to adjust according to the thyristor current control signal. Output current.
  • the power supply unit 10 rectifies the AC input signal and outputs it to the central control unit 50, the intelligent dimming unit 20 and the constant current unit 30, including a silicon controlled dimmer 110 and a rectifier circuit. 120 and isolation diode D1, the AC input signal passes through the thyristor dimmer 110 and the rectifier circuit 120 and then outputs a chopper voltage signal.
  • the input terminal of the thyristor dimmer 110 is connected to the AC input signal
  • the output terminal of the thyristor dimmer is connected to the input terminal of the rectifier circuit
  • the first terminal of the rectifier circuit is connected to the input terminal of the central control unit
  • the central The control unit 20 collects the rectified chopper voltage signal to control the operation of the subsequent circuit
  • the second end of the rectification circuit is connected to the anode of the isolation diode D1
  • the cathode of the isolation diode D1 is connected to the input end of the intelligent dimming unit and the input of the constant current unit.
  • the intelligent dimming unit collects the chopper voltage signal for subsequent power supply mode selection
  • the constant current unit uses the output chopper voltage signal as the power supply voltage.
  • the intelligent dimming unit 20 includes a power selection module 210 connected to the power supply unit, an AC-DC power module 220 and an LDO power module 230 connected to the power selection module 210, and an AC -Intelligent control module 240 of DC power module 220 and LDO power module 230.
  • the power selection module 210 is used to select one of the AC-DC power module 220 and the LDO power module 230 to power the intelligent control module 240 according to the output voltage of the power supply unit. After the AC signal passes through the power supply unit, it outputs a chopped signal waveform to the power selection module.
  • the power selection module recognizes the low voltage state.
  • turn off the AC-DC power module enable the LDO power module to work, and provide voltage to the intelligent control module through the LDO power module; when the thyristor dimmer is not working in the small phase angle mode, the chopper voltage output by the power supply unit becomes high.
  • the power selection module recognizes the high voltage state, it turns off the LDO power module, enables the AC-DC power module to work, and provides voltage to the intelligent control module through the AC-DC power module. This ensures that the intelligent control module can obtain sufficient power supply voltage at different phase angles of the thyristor dimmer, that is, during the thyristor dimming process, the intelligent control module is in normal working mode.
  • the central control unit 50 includes a thyristor phase detection module 510 connected to the power supply unit 10 , a central core connected to the thyristor phase detection module 510 and bidirectionally communicating with the intelligent control module 240 Control module 520.
  • the thyristor phase detection module 510 collects the voltage waveform of the thyristor phase angle inside the power supply unit.
  • the implementation method of the thyristor phase detection module is not limited (an integrated circuit chip or discrete element with the function of detecting waveforms). Any circuit built with a device can be used).
  • the thyristor phase detection module collects the current dimming stroke of the thyristor dimmer in real time, identifies the size of the chopper voltage waveform after passing through the thyristor dimmer, and provides the information to the central core control module.
  • the central core control module 520 is configured to send a feedback signal to the intelligent control module when the phase cutting angle of the thyristor is less than the first preset threshold. After the central core control module processes the current phase angle of the thyristor dimmer, it outputs a feedback signal to the intelligent control module to adjust the information provided by the intelligent control module to the constant current unit.
  • the central core control module sends an instruction to the intelligent control module, and the intelligent control module sends a standby instruction to The constant current unit turns off the LED light group module and the LED light string will not light up. This can shield the LED light string flickering problem caused by the thyristor dimmer at a small phase angle.
  • the central core control module 520 is used to send the thyristor current control signal to the thyristor current output unit to control the thyristor when the phase cutting angle of the thyristor is less than the first preset threshold.
  • the silicon current output unit increases the output current.
  • the thyristor phase cutting angle is greater than the second preset threshold, it sends a thyristor current control signal to the thyristor current output unit to control the thyristor current output unit to reduce the output current.
  • a preset threshold is smaller than the second preset threshold.
  • the central core control module processes the current phase angle of the thyristor dimmer and outputs a control signal to the thyristor current output unit to adjust the working state of the thyristor output current unit.
  • the current of the thyristor current output module increases; when the thyristor dimmer works in the large phase mode, the thyristor current output module The current of the silicon current output module is reduced.
  • the central core control module 520 is also used to record the maximum phase angle of each type of silicon controlled dimmer and latch the maximum phase angle so that this model can be used later.
  • the thyristor dimmer adjusts the minimum output current of the thyristor current output unit.
  • the constant current unit 30 includes an LED constant current module 310 connected to the intelligent control module 240 , and an LED lamp group module 320 connected to the LED constant current module 310 and the power supply unit 10 .
  • the implementation form of the ED constant current module 310 is not limited. Any integrated circuit or circuit built with discrete devices that can realize the constant current function can be used for the LED constant current module.
  • the number of current channels output by the LED constant current module can be a single channel. , two-way, three-way or multi-way.
  • the LED lamp group module 320 is matched according to the number of current channels of the LED constant current module 310 .
  • the intelligent control module 240 receives a control instruction from the IOT terminal (for example, standby, increase brightness, decrease brightness, etc.), and based on the control instruction and the feedback signal from the central core control module Together, a dimming signal is generated and sent to the LED constant current unit to adjust the lighting state of the LED lamp group inside the LED constant current unit.
  • the intelligent control module can use any IOT module with intelligent control function such as infrared control, radar control, remote control, APP control, voice control, etc.
  • the intelligent control module has no restrictions on the signal control form of the LED constant current module inside the constant current unit.
  • the dimming signal sent by the intelligent control module can be a PWM pulse width modulated signal, AM analog dimming signal, IIC, SPI, DMX512, Single-wire communication and other types of digital dimming signals.
  • the intelligent control module also feeds back the status information of the current LED output current to the central control unit, and the central control unit adjusts the working status of the thyristor output current unit according to the received information. That is, when the control command is standby or low brightness, the intelligent control module generates an adjustment signal according to the control command and feeds it back to the central core control module.
  • the central core control module sends a thyristor current control signal to the thyristor current output unit according to the adjustment signal to control the thyristor current output unit.
  • the silicon controlled current output unit reduces the output current. Therefore, when the system enters the standby state, the output current output to the thyristor dimmer can be reduced in time to ensure that the system is in a low power consumption state.
  • FIG. 2 shows a circuit diagram of an LED light source compatible with both silicon-controlled dimming and intelligent dimming provided by Embodiment 1 of the present invention.
  • the thyristor phase detection module includes resistor R2, resistor R3 and clamp tube DZ1.
  • One end of resistor R2 is connected to the output end of the power supply unit, and the other end of resistor R2 is connected to one end of resistor R3 and the clamp tube.
  • the negative electrode of tube DZ1 and the central core control module, the other end of resistor R3 and the positive electrode of clamp tube DZ1 are connected to ground.
  • the thyristor phase detection module uses a resistor voltage divider to convert it into a pulse width signal Signal A through a clamping tube.
  • the duty cycle of the pulse width signal reflects the dimming of the thyristor dimmer. Phase angle.
  • the U2 control chip in Figure 2 serves as the central core control module in Figure 1.
  • the constant current source and R1 in Figure 2 serve as the thyristor current output module in Figure 1, and the circuit of the constant current source is shown in Figure 5.
  • the intelligent control module and U2 have two-way communication.
  • the U2 control chip When it detects that the thyristor dimmer is at a small phase angle, the U2 control chip sends a Signal B signal to the intelligent control module; when the intelligent control module sends a standby signal or a low dimming signal to the constant current unit When , the intelligent control module synchronously sends the Signal C signal to the U2 control chip, and the U2 control chip sends the Signal D signal to the constant current source to adjust the operating current of the constant current source to become smaller and reduce operating losses.
  • U1 is an LED constant current control integrated circuit chip.
  • the E1 electrolytic capacitor is connected to the CH port of U1. It has a current compensation function and compensates the current of the LED lamp group in any cycle of the online network. The output current of the LED lamp group has no flicker.
  • the communication form between the intelligent control module and the U1 chip is the IIC protocol.
  • the OUT output port of the U1 chip is connected to 5 groups of light strings with different color temperatures.
  • FIG 3 shows a circuit diagram of an LED light source compatible with both silicon-controlled dimming and intelligent dimming provided in Embodiment 2 of the present invention.
  • U3 is an integrated circuit chip that integrates the functions of the U2 control chip and constant current source in Figure 2. The rest of the working modes are consistent with Figure 2 and will not be described again here.
  • FIG 4 shows a circuit diagram of an LED light source that is compatible with both silicon-controlled dimming and intelligent dimming provided in the third embodiment of the present invention.
  • U4 is an integrated circuit chip that integrates the functions of the U2 control chip, constant current source, and LED constant current driver chip U1 in Figure 2. The rest of the working modes are consistent with Figure 2 and will not be described again here.

Abstract

本发明提供一种同时兼容可控硅调光和智能调光的LED光源，中央控制单元用于采集供电单元的可控硅切相角度，根据可控硅切相角度生成反馈信号发送至智能调光单元；智能调光单元用于接收来自IOT终端的控制指令，根据控制指令和反馈信号生成调光信号发送至恒流单元，还用于根据控制信号生成调整信号发送至中央控制单元；恒流单元用于根据调光信号调整发光状态；中央控制单元还用于根据可控硅切相角度或调整信号生成可控硅电流控制信号发送至可控硅电流输出单元；可控硅电流输出单元用于根据可控硅电流控制信号调整输出电流。由此，可以实现可控硅调光和智能调光的兼容控制，满足用户需求。

Description

一种同时兼容可控硅调光和智能调光的LED光源及灯具 技术领域
本发明涉及LED芯片技术领域，尤其涉及一种同时兼容可控硅调光和智能调光的LED光源及灯具。
 背景技术
LED照明灯具作为一种节能环保的新型产品，随着技术的发展，在调光技术领域，已经能达到传统钨丝灯在可控硅调光器上的调光水平。在另一种调光技术领域，随着IOT智能模块的快速崛起发展，智能照明技术已经相当成熟。然而，在可控硅调光和智能照明调光的两大领域，虽然LED电源驱动或LED灯具都取得长足的发展，但没有一种既能有效满足可控硅调光需求又能实现智能调光的方法及产品。
 技术问题
本发明的目的在于针对目前LED照明技术不能同时兼容可控硅调光和智能调光的情况，提供一种同时兼容可控硅调光和智能调光的LED光源，在传统的可控硅调光技术基础上结合智能调光技术，实现LED光源或LED灯具在可控硅调光器上既能满足可控硅调光器的调光需求又能实现智能调光。
 技术解决方案
本发明实施例提供一种同时兼容可控硅调光和智能调光的LED光源，包括供电单元、智能调光单元、恒流单元、可控硅电流输出单元和中央控制单元，所述供电单元的输出端连接于所述中央控制单元的输入端、所述智能调光单元的输入端和所述恒流单元的输入端，所述中央控制单元与所述智能调光单元双相通信，所述中央控制单元的输出端还连接于所述可控硅电流输出单元的输入端，所述智能调光单元的输出端还连接于所述恒流单元的输入端，所述可控硅电流输出单元的输出端连接于所述供电单元的输入端，其中，所述中央控制单元用于采集所述供电单元的可控硅切相角度，根据可控硅切相角度生成反馈信号发送至所述智能调光单元；所述智能调光单元用于接收来自IOT终端的控制指令，根据所述控制指令和所述反馈信号生成调光信号发送至所述恒流单元，还用于根据所述控制信号生成调整信号发送至所述中央控制单元；所述恒流单元用于根据所述调光信号调整发光状态；所述中央控制单元还用于根据所述可控硅切相角度或所述调整信号生成可控硅电流控制信号发送至所述可控硅电流输出单元；所述可控硅电流输出单元用于根据所述可控硅电流控制信号调整输出电流。
在本发明提供的同时兼容可控硅调光和智能调光的LED光源中，所述供电单元包括可控硅调光器、整流电路和隔离二极管D1，所述可控硅调光器的输入端接AC交流输入信号，所述可控硅调光器的输出端连接所述整流电路的输入端，所述整流电路的第一端连接所述中央控制单元的输入端，所述整流电路的第二端连接所述隔离二极管D1的正极，所述隔离二极管D1的负极连接所述智能调光单元的输入端和所述恒流单元的输入端，所述AC交流输入信号经过所述可控硅调光器和所述整流电路后输出斩波电压信号。
在本发明提供的同时兼容可控硅调光和智能调光的LED光源中，所述智能调光单元包括电源选择模块、AC-DC电源模块、LDO电源模块和智能控制模块，所述电源选择模块的输入端连接所述供电单元的输出端，所述电源选择模块的输出端连接所述AC-DC电源模块的输入端和所述LDO电源模块的输入端，所述AC-DC电源模块的输出端和所述LDO电源模块的输出端连接所述智能控制模块的输入端，所述电源选择模块根据所述供电单元的输出电压选择所述AC-DC电源模块和所述LDO电源模块中的一个为所述智能控制模块供电。
在本发明提供的同时兼容可控硅调光和智能调光的LED光源中，所述中央控制单元包括可控硅相位检测模块和中央核心控制模块，所述可控硅相位检测模块的输入端连接所述供电单元，所述可控硅相位检测模块的输出端连接所述中央核心控制模块，所述中央核心控制模块与所述智能控制模块双向通信，所述可控硅相位检测模块用于采集所述供电单元的可控硅切相角度；所述中央核心控制模块用于在所述可控硅切相角度小于第一预设阈值时，发送所述反馈信号至所述智能控制模块，同时发送可控硅电流控制信号至所述可控硅电流输出单元控制可控硅电流输出单元增加输出电流，在所述可控硅切相角度大于第二预设阈值时，发送可控硅电流控制信号至所述可控硅电流输出单元控制可控硅电流输出单元减小输出电流，所述第一预设阈值小于所述第二预设阈值。
在本发明提供的同时兼容可控硅调光和智能调光的LED光源中，所述恒流单元包括LED恒流模块和LED灯组模块，所述LED恒流模块的输入端连接所述智能控制模块，所述LED恒流模块的输出端连接所述LED灯组模块的输入端，所述LED灯组模块的输入端还连接于所述供电单元的输出端，所述智能控制模块在收到所述反馈信号时，发送待机指令至所述LED恒流模块，所述LED恒流模块根据所述待机指令关闭所述LED灯组模块。
在本发明提供的同时兼容可控硅调光和智能调光的LED光源中，在所述控制指令为待机或低亮度时，所述智能控制模块根据所述控制指令生成所述调整信号至所述中央核心控制模块，所述中央核心控制模块根据所述调整信号发送可控硅电流控制信号至所述可控硅电流输出单元控制可控硅电流输出单元减小输出电流。
在本发明提供的同时兼容可控硅调光和智能调光的LED光源中，所述可控硅相位检测模块包括电阻R2、电阻R3和钳位管DZ1，电阻R2的一端连接于所述供电单元的输出端，电阻R2的另一端连接于电阻R3的一端、钳位管DZ1的负极和中央核心控制模块，电阻R3的另一端和钳位管DZ1的正极接地。
根据本发明的又一方面，还提供一种LED灯具，包括如上所述的同时兼容可控硅调光和智能调光的LED光源。
 有益效果
实施本发明实施例，具有如下有益效果：本发明提供的同时兼容可控硅调光和智能调光的LED光源，包含有供电单元、智能调光单元、恒流单元、可控硅电流输出单元和中央控制单元；中央控制单元对供电单元内部的可控硅切相角度的电压波形进行采集判断，在不同的相位角度值输出不同的信号到智能调光单元和可控硅电流控制单元，调整控制不同电路单元的工作模式；智能调光单元在可控硅不同相位角度能匹配不同的供电模式，在可控硅调光过程中，实现智能调光单元对恒流单元的控制是正常的工作状态；由此，可以实现可控硅调光和智能调光的兼容控制，满足用户需求。
 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1所示是本发明提供的同时兼容可控硅调光和智能调光的LED光源的原理图；
图2所示是本发明实施例一提供的同时兼容可控硅调光和智能调光的LED光源的电路图；
图3所示是本发明实施例二提供的同时兼容可控硅调光和智能调光的LED光源的电路图；
图4所示是本发明实施例三提供的同时兼容可控硅调光和智能调光的LED光源的电路图；
图5所示是图1中的可控硅输出电流模块的电路图；
图6所示是供电单元的可控硅切相角度为可控硅最大相位角度时的相关波形；
图7所示是供电单元的可控硅切相角度为可控硅中间相位角度时的相关波形；
图8所示是供电单元的可控硅切相角度为可控硅最小相位角度时的相关波形。
 本发明的实施方式
为了便于理解本发明，下面将参照相关附图对本发明进行更全面的描述。附图中给出了本发明的典型实施例。但是，本发明可以以许多不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使对本发明的公开内容更加透彻全面。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本发明。
本发明总的思路是：针对目前LED照明技术不能同时兼容可控硅调光和智能调光的情况，本发明提供一种包含有供电单元、智能调光单元、恒流单元、可控硅电流输出单元和中央控制单元的同时兼容可控硅调光和智能调光的LED光源；中央控制单元对供电单元内部的可控硅切相角度的电压波形进行采集判断，在不同的相位角度值输出不同的信号到智能调光单元和可控硅电流控制单元，调整控制不同电路单元的工作模式；智能调光单元在可控硅不同相位角度能匹配不同的供电模式，在可控硅调光过程中，实现智能调光单元对恒流单元的控制是正常的工作状态。由此，可以实现可控硅调光和智能调光的兼容控制，满足用户需求。
为了更好的理解上述技术方案，下面将结合说明书附图以及具体的实施方式对上述技术方案进行详细的说明，应当理解本发明实施例以及实施例中的具体特征是对本申请技术方案的详细的说明，而不是对本申请技术方案的限定，在不冲突的情况下，本发明实施例以及实施例中的技术特征可以相互组合。
图1所示是本发明提供的同时兼容可控硅调光和智能调光的LED光源的原理图。如图1所示，本发明提供的同时兼容可控硅调光和智能调光的LED光源，包括供电单元10、智能调光单元20、恒流单元30、可控硅电流输出单元40和中央控制单元50。其中，中央控制单元50用于采集供电单元的可控硅切相角度，根据可控硅切相角度生成反馈信号发送至智能调光单元20；智能调光单元20用于接收来自IOT终端的控制信号，根据控制信号和反馈信号生成调光信号发送至恒流单元30，还用于根据控制信号生成调整信号发送至中央控制单元20；恒流单元30用于根据调光信号调整发光状态；中央控制单元50还用于根据可控硅切相角度或调整信号生成可控硅电流控制信号发送至可控硅电流输出单元40；可控硅电流输出单元40用于根据可控硅电流控制信号调整输出电流。
具体地，在本发明一实施例中，供电单元10将AC交流输入信号整流后输出至中央控制单元50、智能调光单元20和恒流单元30，包括可控硅调光器110、整流电路120和隔离二极管D1，AC交流输入信号经过可控硅调光器110和整流电路120后输出斩波电压信号。进一步地，可控硅调光器110的输入端接AC交流输入信号，可控硅调光器的输出端连接整流电路的输入端，整流电路的第一端连接中央控制单元的输入端，中央控制单元20采集整流后的斩波电压信号以控制后续电路的工作；整流电路的第二端连接隔离二极管D1的正极，隔离二极管D1的负极连接智能调光单元的输入端和恒流单元的输入端，智能调光单元采集斩波电压信号以进行后续供电模式的选择，恒流单元将输出的斩波电压信号作为供电电压。
具体地，在本发明一实施例中，智能调光单元20包括连接于供电单元的电源选择模块210、连接于电源选择模块210的AC-DC电源模块220和LDO电源模块230、以及连接于AC-DC电源模块220和LDO电源模块230的智能控制模块240。电源选择模块210用于根据供电单元的输出电压选择AC-DC电源模块220和LDO电源模块230中的一个为智能控制模块240供电。交流信号经过供电单元后输出斩波信号波形至电源选择模块，在可控硅调光器切相到小相角状态时，输出的斩波电压偏低，电源选择模块识别到偏低的电压状态后，关闭AC-DC电源模块，使能LDO电源模块工作，通过LDO电源模块提供电压给智能控制模块；当可控硅调光器不是工作在小相角模式时，供电单元输出的斩波电压变高，电源选择模块识别到偏高的电压状态后，关闭LDO电源模块，使能AC-DC电源模块工作，通过AC-DC电源模块提供电压给智能控制模块。由此，保证了可控硅调光器在不同相位角度时，智能控制模块都能获取到足够的供电电压，即在可控硅调光过程中，智能控制模块都处于正常的工作模式。
具体地，在本发明一实施例中，中央控制单元50包括连接于供电单元10的可控硅相位检测模块510、连接于可控硅相位检测模块510并与智能控制模块240双向通信的中央核心控制模块520。可控硅相位检测模块510对供电单元内部的可控硅切相角度的电压波形进行采集，其中，可控硅相位检测模块的实现方式不受限制（具有检测波形功能的集成电路芯片或分立元器件搭建的电路均可）。通过可控硅相位检测模块实时采集当前可控硅调光器的调光行程，识别经过可控硅调光器后的斩波电压波形的大小，并把信息提供给中央核心控制模块。
进一步地，在本发明一实施例中，中央核心控制模块520用于在可控硅切相角度小于第一预设阈值时，发送反馈信号至智能控制模块。中央核心控制模块根据当前可控硅调光器的相位角度进行处理后，输出反馈信号给智能控制模块以调整智能控制模块对恒流单元的信息。当可控硅调光器的相位角度小于某一固定值时（即处于如图8所示的小相角工作模式），中央核心控制模块发送指令告知智能控制模块，智能控制模块发送待机指令给恒流单元使得LED灯组模块关闭，LED灯串不会点亮，由此，可以屏蔽可控硅调光器在小相位角度引起的LED灯串闪烁问题。
进一步地，在本发明一实施例中，中央核心控制模块520用于在可控硅切相角度小于第一预设阈值时，发送可控硅电流控制信号至可控硅电流输出单元控制可控硅电流输出单元增加输出电流，在可控硅切相角度大于第二预设阈值时，发送可控硅电流控制信号至可控硅电流输出单元控制可控硅电流输出单元减小输出电流，第一预设阈值小于第二预设阈值。中央核心控制模块根据当前可控硅调光器的相位角度进行处理，输出控制信号给可控硅电流输出单元以调整可控硅输出电流单元的工作状态。如图6和图7所示，在可控硅调光器工作在小相位模式时，可控硅电流输出模块的电流增大；在可控硅调光器工作在大相位模式时，可控硅电流输出模块的电流减小。
进一步地，在本发明一实施例中，中央核心控制模块520还用于记录每一种可控硅调光器的最大相位角度并把最大相位角度锁存起来，以便后续使用到该种型号的可控硅调光器时调整对可控硅电流输出单元的最小输出电流。
具体地，在本发明一实施例中，恒流单元30包括连接于智能控制模块240的LED恒流模块310、连接于LED恒流模块310和供电单元10的LED灯组模块320。其中，ED恒流模块310的实现形式不受限制，任何能实现恒流功能的集成电路或分立器件搭建的电路均可用于LED恒流模块，LED恒流模块输出的电流通道数可以是单路、双路、三路或多路。LED灯组模块320根据LED恒流模块310的电流通道数进行匹配。
具体地，在本发明一实施例中，智能控制模块240接收来自IOT终端的控制指令（例如，待机、调高亮度、调低亮度等），根据该控制指令和来自中央核心控制模块的反馈信号一起生成调光信号，发送到给LED恒流单元调整LED恒流单元内部的LED灯组的发光状态。其中，智能控制模块可以采用红外控制、雷达控制、遥控控制、APP控制、语音控制等任一一种具有智能控制功能IOT的模组。智能控制模块对恒流单元内部的LED恒流模块的信号控制形式不受限制，智能控制模块发送的调光信号可以是PWM脉宽调制的信号、AM模拟调光信号、IIC、SPI、DMX512、单线通讯等类型数字调光信号。
进一步地，在本发明一实施例中，智能控制模块还将当前LED输出电流的状态信息反馈给中央控制单元，中央控制单元根据接收到的信息，调整可控硅输出电流单元的工作状态。即在控制指令为待机或低亮度时，智能控制模块根据控制指令生成调整信号反馈至中央核心控制模块，中央核心控制模块根据调整信号发送可控硅电流控制信号至可控硅电流输出单元控制可控硅电流输出单元减小输出电流。由此，可以在系统进入待机状态时，及时减小输出到可控硅调光器的输出电流，保证系统处于低功耗状态。
实施例一
图2所示是本发明实施例一提供的同时兼容可控硅调光和智能调光的LED光源的电路图。如图2所示，可控硅相位检测模块包括电阻R2、电阻R3和钳位管DZ1，电阻R2的一端连接于供电单元的输出端，电阻R2的另一端连接于电阻R3的一端、钳位管DZ1的负极和中央核心控制模块，电阻R3的另一端和钳位管DZ1的正极接地。在本实施例中，可控硅相位检测模块采用电阻器分压的形式经过钳位管转换为脉宽信号Signal A，脉宽信号占空比的大小反映了可控硅调光器的调光相位角度。图2 的U2控制芯片作为图1的中央核心控制模块。图2的恒流源和R1作为图1的可控硅电流输出模块，其中恒流源的电路如图5所示。智能控制模块和U2为双向通讯，当检测到可控硅调光器处于小相位角度，U2控制芯片发送Signal B信号给智能控制模块；当智能控制模块发送待机信号或低调光信号给恒流单元时，智能控制模块同步发送Signal C 信号给U2控制芯片，U2控制芯片发出Signal D信号给恒流源，调整恒流源工作电流变小，降低工作损耗。进一步地，U1为LED恒流控制集成电路芯片，E1电解电容接U1的CH端口，具有电流补偿功能，补偿了 LED灯组在线网任一周期中的电流，LED灯组输出电流无频闪。智能控制模块与U1芯片的通讯形式为IIC协议。U1芯片的OUT输出端口连接5组不同色温的灯串。
实施例二
图3所示是本发明实施例二提供的同时兼容可控硅调光和智能调光的LED光源的电路图。在图3所示的实施例中，U3为集成电路芯片，集成了图2的U2控制芯片和恒流源的功能。其余工作模式和图2一致，此处不再赘述。
实施例三
图4所示是本发明实施例三提供的同时兼容可控硅调光和智能调光的LED光源的电路图。U4为集成电路芯片，集成了图2的U2控制芯片、恒流源、LED恒流驱动芯片U1的功能。其余工作模式和图2一致，此处不再赘述。
在此处所提供的说明书中，说明了大量具体细节。然而，能够理解，本发明的实施例可以在没有这些具体细节的情况下实践。在一些实例中，并未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。
类似地，应当理解，为了精简本公开并帮助理解各个发明方面中的一个或多个，在上面对本发明的示例性实施例的描述中，本发明的各个特征有时被一起分组到单个实施例、图、或者对其的描述中。然而，并不应将该公开的方法解释成反映如下意图：即所要求保护的本发明要求比在每个权利要求中所明确记载的特征更多的特征。更确切地说，如下面的权利要求书所反映的那样，发明方面在于少于前面公开的单个实施例的所有特征。因此，遵循具体实施方式的权利要求书由此明确地并入该具体实施方式，其中每个权利要求本身都作为本发明的单独实施例。
此外，本领域的技术人员能够理解，尽管在此的一些实施例包括其它实施例中所包括的某些特征而不是其它特征，但是不同实施例的特征的组合意味着处于本发明的范围之内并且形成不同的实施例。例如，在下面的权利要求书中，所要求保护的实施例的任意之一都可以以任意的组合方式来使用。
应该注意的是上述实施例对本发明进行说明而不是对本发明进行限制，并且本领域技术人员在不脱离所附权利要求的范围的情况下可设计出替换实施例。在权利要求中，不应将位于括号之间的任何参考符号构造成对权利要求的限制。单词“包含”不排除存在未列在权利要求中的元件或步骤。位于元件之前的单词“一”或“一个”不排除存在多个这样的元件。本发明可以借助于包括有若干不同元件的硬件以及借助于适当编程的计算机来实现。在列举了若干装置的单元权利要求中，这些装置中的若干个可以是通过同一个硬件项来具体体现。单词第一、第二、以及第三等的使用不表示任何顺序。可将这些单词解释为名称。

Claims (8)

  1. 一种同时兼容可控硅调光和智能调光的LED光源，其特征在于，包括供电单元、智能调光单元、恒流单元、可控硅电流输出单元和中央控制单元，所述供电单元的输出端连接于所述中央控制单元的输入端、所述智能调光单元的输入端和所述恒流单元的输入端，所述中央控制单元与所述智能调光单元双相通信，所述中央控制单元的输出端还连接于所述可控硅电流输出单元的输入端，所述智能调光单元的输出端还连接于所述恒流单元的输入端，所述可控硅电流输出单元的输出端连接于所述供电单元的输入端，其中，所述中央控制单元用于采集所述供电单元的可控硅切相角度，根据可控硅切相角度生成反馈信号发送至所述智能调光单元；所述智能调光单元用于接收来自IOT终端的控制指令，根据所述控制指令和所述反馈信号生成调光信号发送至所述恒流单元，还用于根据所述控制信号生成调整信号发送至所述中央控制单元；所述恒流单元用于根据所述调光信号调整发光状态；所述中央控制单元还用于根据所述可控硅切相角度或所述调整信号生成可控硅电流控制信号发送至所述可控硅电流输出单元；所述可控硅电流输出单元用于根据所述可控硅电流控制信号调整输出电流。
  2. 根据权利要求1所述的同时兼容可控硅调光和智能调光的LED光源，其特征在于，所述智能调光单元包括电源选择模块、AC-DC电源模块、LDO电源模块和智能控制模块，所述电源选择模块的输入端连接所述供电单元的输出端，所述电源选择模块的输出端连接所述AC-DC电源模块的输入端和所述LDO电源模块的输入端，所述AC-DC电源模块的输出端和所述LDO电源模块的输出端连接所述智能控制模块的输入端，所述电源选择模块根据所述供电单元的输出电压选择所述AC-DC电源模块和所述LDO电源模块中的一个为所述智能控制模块供电。
  3. 根据权利要求2所述的同时兼容可控硅调光和智能调光的LED光源，其特征在于，所述供电单元包括可控硅调光器、整流电路和隔离二极管D1，所述可控硅调光器的输入端接AC交流输入信号，所述可控硅调光器的输出端连接所述整流电路的输入端，所述整流电路的第一端连接所述中央控制单元的输入端，所述整流电路的第二端连接所述隔离二极管D1的正极，所述隔离二极管D1的负极连接所述智能调光单元的输入端和所述恒流单元的输入端，所述AC交流输入信号经过所述可控硅调光器和所述整流电路后输出斩波电压信号。
  4. 根据权利要求3所述的同时兼容可控硅调光和智能调光的LED光源，其特征在于，所述中央控制单元包括可控硅相位检测模块和中央核心控制模块，所述可控硅相位检测模块的输入端连接所述供电单元，所述可控硅相位检测模块的输出端连接所述中央核心控制模块，所述中央核心控制模块与所述智能控制模块双向通信，所述可控硅相位检测模块用于采集所述供电单元的可控硅切相角度；所述中央核心控制模块用于在所述可控硅切相角度小于第一预设阈值时，发送所述反馈信号至所述智能控制模块，同时发送可控硅电流控制信号至所述可控硅电流输出单元控制可控硅电流输出单元增加输出电流，在所述可控硅切相角度大于第二预设阈值时，发送可控硅电流控制信号至所述可控硅电流输出单元控制可控硅电流输出单元减小输出电流，所述第一预设阈值小于所述第二预设阈值。
  5. 根据权利要求4所述的同时兼容可控硅调光和智能调光的LED光源，其特征在于，所述恒流单元包括LED恒流模块和LED灯组模块，所述LED恒流模块的输入端连接所述智能控制模块，所述LED恒流模块的输出端连接所述LED灯组模块的输入端，所述LED灯组模块的输入端还连接于所述供电单元的输出端，所述智能控制模块在收到所述反馈信号时，发送待机指令至所述LED恒流模块，所述LED恒流模块根据所述待机指令关闭所述LED灯组模块。
  6. 根据权利要求4所述的同时兼容可控硅调光和智能调光的LED光源，其特征在于，在所述控制指令为待机或低亮度时，所述智能控制模块根据所述控制指令生成所述调整信号至所述中央核心控制模块，所述中央核心控制模块根据所述调整信号发送可控硅电流控制信号至所述可控硅电流输出单元控制可控硅电流输出单元减小输出电流。
  7. 根据权利要求4所述的同时兼容可控硅调光和智能调光的LED光源，其特征在于，所述可控硅相位检测模块包括电阻R2、电阻R3和钳位管DZ1，电阻R2的一端连接于所述供电单元的输出端，电阻R2的另一端连接于电阻R3的一端、钳位管DZ1的负极和中央核心控制模块，电阻R3的另一端和钳位管DZ1的正极接地。
  8. 一种LED灯具，其特征在于，包括如权利要求1至7中任一项所述的同时兼容可控硅调光和智能调光的LED光源。
PCT/CN2023/087743 2022-08-22 2023-04-12 一种同时兼容可控硅调光和智能调光的led光源及灯具 WO2024040983A1 (zh)

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