WO2016155128A1 - Light-sensing led drive apparatus for automatically adjusting colour temperature - Google Patents

Light-sensing led drive apparatus for automatically adjusting colour temperature Download PDF

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Publication number
WO2016155128A1
WO2016155128A1 PCT/CN2015/082011 CN2015082011W WO2016155128A1 WO 2016155128 A1 WO2016155128 A1 WO 2016155128A1 CN 2015082011 W CN2015082011 W CN 2015082011W WO 2016155128 A1 WO2016155128 A1 WO 2016155128A1
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module
output module
light
color temperature
light output
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PCT/CN2015/082011
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French (fr)
Chinese (zh)
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程亚兵
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深圳市海骏电子科技有限公司
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Publication of WO2016155128A1 publication Critical patent/WO2016155128A1/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
    • 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
    • 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 utility model relates to the field of LED driving, in particular to an LED driving device for automatically adjusting color temperature of light sensing.
  • the illumination lamp can emit different light at different color temperatures: when the color temperature is less than 3000K, it emits warm light; when the color temperature is 4000K ⁇ 5000K, it emits soft white light; when the color temperature is greater than 6000K, it emits cool light.
  • the existing lighting fixtures have a fixed color temperature or a manually adjusted color temperature, which cannot be adjusted with natural light, and can not automatically adjust the color temperature according to the human eye's demand for color temperature in different time periods.
  • the technical problem to be solved by the utility model is that, in view of the above-mentioned defects that the above-mentioned technology cannot adjust with the natural light and can not automatically adjust the color temperature, the invention provides a light-sensing detection capable of automatically adjusting the color temperature and automatically adjusting the color temperature. LED drive unit.
  • the technical solution adopted by the utility model to solve the technical problem thereof is: constructing an LED driving device for automatically adjusting the color temperature of the light sensing detection, comprising a control circuit and a driving circuit, wherein the control circuit is connected with the driving circuit, and the control circuit
  • the invention includes a light sensing control conversion module and an automatic control module, the driving circuit includes a cold light output module and a warm light output module, and an output end of the light sensing control conversion module is connected to an input end of the automatic control module for detecting the surrounding
  • An output of the automatic control module is respectively connected to an input end of the cold light output module and an input end of the warm light output module, and is configured to intelligently adjust a PWM duty ratio of the cold light output module according to an ambient brightness change. PWM duty cycle and ratio of the warm light output module.
  • the light sensing control conversion module includes a photosensitive device and a voltage conversion circuit, and the photosensitive device converts the optical signal into an electrical signal, and the An electrical signal is output to the automatic control module through the voltage conversion circuit.
  • the automatic control module includes an MCU, and an input end of the MCU is connected to an output end of the voltage conversion circuit for changing according to ambient brightness.
  • the PWM duty ratio of the cold light output module and the PWM duty ratio and ratio of the warm light output module are intelligently adjusted.
  • the light sensing device is a photodiode or a phototransistor or a photoresistor.
  • the LED driving device for automatically adjusting the color temperature of the light sensing detection of the present invention has the following beneficial effects: Since the control circuit and the driving circuit are used, the control circuit includes a light sensing control conversion module and an automatic control module.
  • the driving circuit includes a cold light output module and a warm light output module, and the light sensing control conversion module is used for detecting the brightness of the surrounding environment, and the automatic control module is used for According to the change of ambient brightness, the PWM duty ratio and ratio of the cold light output module and the warm light output module are intelligently adjusted, so that it can adjust with the natural light and automatically adjust the color temperature.
  • FIG. 1 is a schematic structural view of an embodiment of an LED driving device for automatically adjusting color temperature of light sensing detection according to the present invention.
  • the schematic diagram of the LED driving device for automatically adjusting the color temperature of the light sensing is shown in FIG. 1 .
  • the LED driving device for automatically adjusting the color temperature of the light sensing detection comprises a control circuit 1 and a driving circuit 2.
  • the control circuit 1 is connected to the driving circuit 2.
  • the control circuit 1 includes a light sensing control conversion module 11 and an automatic control module 12, and is driven.
  • the circuit 2 includes a cold light output module 21 and a warm light output module 22.
  • the output end of the light sense control conversion module 11 is connected to the input end of the automatic control module 12 for detecting ambient brightness, and the output of the automatic control module 12 is respectively cooled with cold light.
  • the input end of the output module 21 is connected to the input end of the warm light output module 22 for intelligently adjusting the PWM duty ratio of the cold light output module 21 and the PWM duty ratio of the warm light output module 22 according to changes in ambient brightness.
  • the utility model automatically detects the change of natural light according to the light sense control conversion module 11, intelligently adjusts the ratio of the PWM output of the cold light channel and the ratio of the PWM output of the warm light channel, and achieves the function of automatically adjusting the color temperature. When the natural light becomes dark, the output color temperature becomes low; when the natural light becomes bright, the output color temperature becomes high.
  • the light sensing control conversion module 11 includes a photosensitive device 111 and a voltage conversion circuit 112.
  • the photosensitive device converts the optical signal into an electrical signal, and outputs the electrical signal to the automatic control module 12 through the voltage conversion circuit 112.
  • the signal is an analog electrical signal.
  • the voltage conversion circuit 112 is a 0/1V-10V conversion circuit. Specifically, when the natural light is darkened, the photosensitive device 111 controls the output voltage of the voltage conversion circuit 112 to become high, and the PWM duty ratio that the automatic control module 12 outputs to the warm light output module 22 becomes large, and is output to the PWM of the cold light output module 21.
  • the photosensitive device 111 controls the output voltage of the voltage conversion circuit 112 to become low, and the PWM duty ratio that the automatic control module 12 outputs to the warm light output module 22 becomes smaller, and the output is reduced.
  • the PWM duty ratio to the cold light output module 21 becomes large, and the color temperature becomes high.
  • the light sensing device 111 is a photodiode or a phototransistor or a photoresistor or the like.
  • the automatic control module 12 includes an MCU 121.
  • the input end of the MCU 121 is connected to the output end of the voltage conversion circuit 112, and is configured to intelligently adjust the PWM duty ratio of the cold light output module 21 and the warm light output module 22 according to changes in ambient brightness. PWM duty cycle.
  • the automatic control module 12 automatically adjusts the color temperature of the LED driving device according to the change of the ambient brightness in different time periods every day, corresponding to the physical characteristics of the human eye for the color temperature requirements of different time periods, to achieve a comfortable and humanized effect.
  • the brightness of the surrounding environment is detected by the photosensitive device 111, and then output to the input terminal of the MCU 121 of the automatic control module 12 through the voltage conversion circuit 112.
  • the automatic control module 12 intelligently adjusts the ratio of the PWM output of the cold light output module 21 and the PWM output of the warm light output module 22 according to the change of the ambient brightness to achieve the purpose of automatically adjusting the color temperature.

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  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

Proposed is a light-sensing LED drive apparatus for automatically adjusting a colour temperature, which is characterised by comprising a control circuit and a drive circuit, wherein the control circuit is connected to the drive circuit, the control circuit comprises a light-sensing control conversion module and an automatic control module, the drive circuit comprises a cold-colour output module and a warm-colour output module, an output end of the light-sensing control conversion module is connected to an input end of the automatic control module for detecting the luminance of surroundings, an output end of the automatic control module is respectively connected to an input end of the cold-colour output module and an input end of the warm-colour output module for intelligently adjusting a PWM duty ratio of the cold-colour output module, a PWM duty ratio and a proportion of the warm-colour output module according to change of the luminance of surroundings. By means of the present invention, a colour temperature can be automatically adjusted according to natural light.

Description

一种光感检测自动调节色温的LED驱动装置  LED driving device for automatically adjusting color temperature by detecting light perception 技术领域Technical field
本实用新型涉及LED驱动领域，特别涉及一种光感检测自动调节色温的LED驱动装置。 The utility model relates to the field of LED driving, in particular to an LED driving device for automatically adjusting color temperature of light sensing.
背景技术Background technique
随着生活水平的提高，人们对于照明灯的功能需求也日益多样化，照明灯除了满足日常照明之外，其舒适性更加重要。一般的，照明灯可在不同的色温下发出不同的光线：当色温小于3000K时，发出暖色光；当色温为4000K〜5000K时，发出柔和的白色光；当色温大于6000K时，发出冷色光。 With the improvement of living standards, people's functional requirements for lighting are also increasingly diversified. In addition to meeting daily lighting, lighting is more important. Generally, the illumination lamp can emit different light at different color temperatures: when the color temperature is less than 3000K, it emits warm light; when the color temperature is 4000K~5000K, it emits soft white light; when the color temperature is greater than 6000K, it emits cool light.
技术问题technical problem
目前，现有的照明灯具其色温都是固定色温或手动调节色温，不能实现与自然光互动调节，不能根据人眼对不同时间段色温的需求而自动的调节色温。 At present, the existing lighting fixtures have a fixed color temperature or a manually adjusted color temperature, which cannot be adjusted with natural light, and can not automatically adjust the color temperature according to the human eye's demand for color temperature in different time periods.
技术解决方案Technical solution
本实用新型要解决的技术问题在于，针对现有技术的上述不能与自然光互动调节、不能自动调节色温的缺陷，提供一种能与自然光互动调节、能自动调节色温的光感检测自动调节色温的LED驱动装置。The technical problem to be solved by the utility model is that, in view of the above-mentioned defects that the above-mentioned technology cannot adjust with the natural light and can not automatically adjust the color temperature, the invention provides a light-sensing detection capable of automatically adjusting the color temperature and automatically adjusting the color temperature. LED drive unit.
本实用新型解决其技术问题所采用的技术方案是：构造一种光感检测自动调节色温的LED驱动装置，包括控制电路和驱动电路，所述控制电路与所述驱动电路连接，所述控制电路包括光感控制转换模块和自动控制模块，所述驱动电路包括冷光输出模块和暖光输出模块，所述光感控制转换模块的输出端与所述自动控制模块的输入端连接、用于探测周围环境亮度，所述自动控制模块的输出端分别与所述冷光输出模块的输入端和暖光输出模块的输入端连接、用于根据环境亮度变化智能调节所述冷光输出模块的PWM占空比和所述暖光输出模块的PWM占空比及比例。The technical solution adopted by the utility model to solve the technical problem thereof is: constructing an LED driving device for automatically adjusting the color temperature of the light sensing detection, comprising a control circuit and a driving circuit, wherein the control circuit is connected with the driving circuit, and the control circuit The invention includes a light sensing control conversion module and an automatic control module, the driving circuit includes a cold light output module and a warm light output module, and an output end of the light sensing control conversion module is connected to an input end of the automatic control module for detecting the surrounding An output of the automatic control module is respectively connected to an input end of the cold light output module and an input end of the warm light output module, and is configured to intelligently adjust a PWM duty ratio of the cold light output module according to an ambient brightness change. PWM duty cycle and ratio of the warm light output module.
在本实用新型所述的光感检测自动调节色温的LED驱动装置中，所述光感控制转换模块包括感光器件和电压转换电路，所述感光器件将光信号转换为电信号，并将所述电信号通过所述电压转换电路输出到所述自动控制模块。In the LED driving device for automatically adjusting the color temperature of the light sensing detection according to the present invention, the light sensing control conversion module includes a photosensitive device and a voltage conversion circuit, and the photosensitive device converts the optical signal into an electrical signal, and the An electrical signal is output to the automatic control module through the voltage conversion circuit.
在本实用新型所述的光感检测自动调节色温的LED驱动装置中，所述自动控制模块包括MCU，所述MCU的输入端与所述电压转换电路的输出端连接，用于根据环境亮度变化智能调节所述冷光输出模块的PWM占空比和所述暖光输出模块的PWM占空比及比例。In the LED driving device for automatically adjusting the color temperature of the light sensing detection according to the present invention, the automatic control module includes an MCU, and an input end of the MCU is connected to an output end of the voltage conversion circuit for changing according to ambient brightness. The PWM duty ratio of the cold light output module and the PWM duty ratio and ratio of the warm light output module are intelligently adjusted.
在本实用新型所述的光感检测自动调节色温的LED驱动装置中，所述光感器件为光电二极管或光电三极管或光敏电阻。In the LED driving device for automatically adjusting the color temperature of the light sensing detection according to the present invention, the light sensing device is a photodiode or a phototransistor or a photoresistor.
有益效果Beneficial effect
实施本实用新型的光感检测自动调节色温的LED驱动装置，具有以下有益效果: 由于使用控制电路和驱动电路，控制电路包括光感控制转换模块和自动控制模块，驱动电路包括冷光输出模块和暖光输出模块，光感控制转换模块用于探测周围环境亮度，自动控制模块用于根据环境亮度变化智能调节冷光输出模块和暖光输出模块的PWM占空比及比例，所以其能与自然光互动调节、能自动调节色温。 The LED driving device for automatically adjusting the color temperature of the light sensing detection of the present invention has the following beneficial effects: Since the control circuit and the driving circuit are used, the control circuit includes a light sensing control conversion module and an automatic control module. The driving circuit includes a cold light output module and a warm light output module, and the light sensing control conversion module is used for detecting the brightness of the surrounding environment, and the automatic control module is used for According to the change of ambient brightness, the PWM duty ratio and ratio of the cold light output module and the warm light output module are intelligently adjusted, so that it can adjust with the natural light and automatically adjust the color temperature.
附图说明DRAWINGS
为了更清楚地说明本实用新型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实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description It is only some embodiments of the present invention, and other drawings can be obtained according to the drawings without any creative labor for those skilled in the art.
图1为本实用新型光感检测自动调节色温的LED驱动装置一个实施例中的结构示意图。FIG. 1 is a schematic structural view of an embodiment of an LED driving device for automatically adjusting color temperature of light sensing detection according to the present invention.
本发明的实施方式Embodiments of the invention
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
在本实用新型光感检测自动调节色温的LED驱动装置实施例中，其光感检测自动调节色温的LED驱动装置的结构示意图如图1所示。图1中，该光感检测自动调节色温的LED驱动装置包括控制电路1和驱动电路2，控制电路1与驱动电路2连接，控制电路1包括光感控制转换模块11和自动控制模块12，驱动电路2包括冷光输出模块21和暖光输出模块22，光感控制转换模块11的输出端与自动控制模块12的输入端连接、用于探测周围环境亮度，自动控制模块12的输出端分别与冷光输出模块21的输入端和暖光输出模块22的输入端连接、用于根据环境亮度变化智能调节冷光输出模块21的PWM占空比和暖光输出模块22的PWM占空比。本实用新型根据光感控制转换模块11自动检测自然光的变化，智能调节冷光通道的PWM输出的比例和暖光通道的PWM输出的比例，达到自动调节色温功能。当自然光变暗时，输出色温变低；当自然光变亮时，输出的色温变高。In the embodiment of the LED driving device for automatically adjusting the color temperature of the light sensing detection of the present invention, the schematic diagram of the LED driving device for automatically adjusting the color temperature of the light sensing is shown in FIG. 1 . In FIG. 1, the LED driving device for automatically adjusting the color temperature of the light sensing detection comprises a control circuit 1 and a driving circuit 2. The control circuit 1 is connected to the driving circuit 2. The control circuit 1 includes a light sensing control conversion module 11 and an automatic control module 12, and is driven. The circuit 2 includes a cold light output module 21 and a warm light output module 22. The output end of the light sense control conversion module 11 is connected to the input end of the automatic control module 12 for detecting ambient brightness, and the output of the automatic control module 12 is respectively cooled with cold light. The input end of the output module 21 is connected to the input end of the warm light output module 22 for intelligently adjusting the PWM duty ratio of the cold light output module 21 and the PWM duty ratio of the warm light output module 22 according to changes in ambient brightness. The utility model automatically detects the change of natural light according to the light sense control conversion module 11, intelligently adjusts the ratio of the PWM output of the cold light channel and the ratio of the PWM output of the warm light channel, and achieves the function of automatically adjusting the color temperature. When the natural light becomes dark, the output color temperature becomes low; when the natural light becomes bright, the output color temperature becomes high.
本实施例中，光感控制转换模块11包括感光器件111和电压转换电路112，感光器件将光信号转换为电信号，并将电信号通过电压转换电路112输出到自动控制模块12，这里的电信号是模拟的电信号。本实施例中，电压转换电路112为0/1V-10V转换电路。具体的，当自然光变暗时，感光器件111控制电压转换电路112的输出电压变高，自动控制模块12输出给暖光输出模块22的PWM占空比变大，输出给冷光输出模块21的PWM占空比变小，色温变低；当自然光变亮时，感光器件111控制电压转换电路112的输出电压变低，自动控制模块12输出给暖光输出模块22的PWM占空比变小，输出给冷光输出模块21的PWM占空比变大，色温变高。本实施例中，光感器件111为光电二极管或光电三极管或光敏电阻等等。In this embodiment, the light sensing control conversion module 11 includes a photosensitive device 111 and a voltage conversion circuit 112. The photosensitive device converts the optical signal into an electrical signal, and outputs the electrical signal to the automatic control module 12 through the voltage conversion circuit 112. The signal is an analog electrical signal. In this embodiment, the voltage conversion circuit 112 is a 0/1V-10V conversion circuit. Specifically, when the natural light is darkened, the photosensitive device 111 controls the output voltage of the voltage conversion circuit 112 to become high, and the PWM duty ratio that the automatic control module 12 outputs to the warm light output module 22 becomes large, and is output to the PWM of the cold light output module 21. When the natural light is bright, the photosensitive device 111 controls the output voltage of the voltage conversion circuit 112 to become low, and the PWM duty ratio that the automatic control module 12 outputs to the warm light output module 22 becomes smaller, and the output is reduced. The PWM duty ratio to the cold light output module 21 becomes large, and the color temperature becomes high. In this embodiment, the light sensing device 111 is a photodiode or a phototransistor or a photoresistor or the like.
本实施例中，自动控制模块12包括MCU121，MCU121的输入端与电压转换电路112的输出端连接、用于根据环境亮度变化智能调节冷光输出模块21的PWM占空比和暖光输出模块22的PWM占空比。In this embodiment, the automatic control module 12 includes an MCU 121. The input end of the MCU 121 is connected to the output end of the voltage conversion circuit 112, and is configured to intelligently adjust the PWM duty ratio of the cold light output module 21 and the warm light output module 22 according to changes in ambient brightness. PWM duty cycle.
比如早上，人刚起床时，需要色温低的暖色光温馨心情；上午上班时，需要色温高的冷色光清醒大脑；傍晚进餐时，需要色温低的暖色光放松心情。自动控制模块12根据每天不同时间段环境亮度的变化，对应人眼对不同时间段色温需求的物理特性，自动调节LED驱动装置的色温，达到舒适和人性化的效果。For example, in the morning, when people just get up, they need a warm color with a low color temperature. When they go to work in the morning, they need a cool color with a high color temperature to wake up the brain. When eating in the evening, you need a warm light with a low color temperature to relax. The automatic control module 12 automatically adjusts the color temperature of the LED driving device according to the change of the ambient brightness in different time periods every day, corresponding to the physical characteristics of the human eye for the color temperature requirements of different time periods, to achieve a comfortable and humanized effect.
总之，在本实施例中，通过感光器件111探测周围环境亮度，再通过电压转换电路112输出至自动控制模块12的MCU121输入端。自动控制模块12根据环境亮度变化，智能调节冷光输出模块21的PWM输出和暖光输出模块22的PWM输出的比例，达到自动调节色温的目的。In summary, in the present embodiment, the brightness of the surrounding environment is detected by the photosensitive device 111, and then output to the input terminal of the MCU 121 of the automatic control module 12 through the voltage conversion circuit 112. The automatic control module 12 intelligently adjusts the ratio of the PWM output of the cold light output module 21 and the PWM output of the warm light output module 22 according to the change of the ambient brightness to achieve the purpose of automatically adjusting the color temperature.
以上所述仅为本实用新型的较佳实施例而已，并不用以限制本实用新型，凡在本实用新型的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本实用新型的保护范围之内。The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are included in the spirit and principles of the present invention, should be included in Within the scope of protection of the present invention.

Claims (1)

  1. 1、一种光感检测自动调节色温的LED驱动装置，其特征在于，包括控制电路和驱动电路，所述控制电路与所述驱动电路连接，所述控制电路包括光感控制转换模块和自动控制模块，所述驱动电路包括冷光输出模块和暖光输出模块，所述光感控制转换模块的输出端与所述自动控制模块的输入端连接、用于探测周围环境亮度，所述自动控制模块的输出端分别与所述冷光输出模块的输入端和暖光输出模块的输入端连接、用于根据环境亮度变化智能调节所述冷光输出模块和所述暖光输出模块的PWM占空比及比例。What is claimed is: 1. An LED driving device for automatically adjusting color temperature of a light sensing detection, comprising: a control circuit and a driving circuit, wherein the control circuit is connected to the driving circuit, the control circuit comprises a light sensing control conversion module and automatic control a module, the driving circuit includes a cold light output module and a warm light output module, and an output end of the light sensing control conversion module is connected to an input end of the automatic control module for detecting ambient brightness, and the automatic control module The output ends are respectively connected to the input end of the cold light output module and the input end of the warm light output module, and are configured to intelligently adjust the PWM duty ratio and the ratio of the cold light output module and the warm light output module according to ambient brightness changes.
    2、根据权利要求1所述的光感检测自动调节色温的LED驱动装置，其特征在于，所述光感控制转换模块包括感光器件和电压转换电路，所述感光器件将光信号转换为电信号，并将所述电信号通过所述电压转换电路输出到所述自动控制模块。2. The LED driving device for automatically adjusting color temperature according to claim 1, wherein the light sensing control conversion module comprises a photosensitive device and a voltage conversion circuit, and the photosensitive device converts the optical signal into an electrical signal. And outputting the electrical signal to the automatic control module through the voltage conversion circuit.
    3、根据权利要求2所述的光感检测自动调节色温的LED驱动装置，其特征在于，所述自动控制模块包括MCU，所述MCU的输入端与所述电压转换电路的输出端连接，用于根据环境亮度变化智能调节所述冷光输出模块的PWM占空比和所述暖光输出模块的PWM占空比及比例。3. The LED driving device for automatically adjusting color temperature according to claim 2, wherein the automatic control module comprises an MCU, and an input end of the MCU is connected to an output end of the voltage conversion circuit, The PWM duty ratio of the cold light output module and the PWM duty ratio and ratio of the warm light output module are intelligently adjusted according to changes in ambient brightness.
    4、根据权利要求3所述的光感检测自动调节色温的LED驱动装置，其特征在于，所述光感器件为光电二极管或光电三极管或光敏电阻。4. The LED driving device for automatically adjusting color temperature according to claim 3, wherein the photosensitive device is a photodiode or a phototransistor or a photoresistor.
PCT/CN2015/082011 2015-03-31 2015-06-23 Light-sensing led drive apparatus for automatically adjusting colour temperature WO2016155128A1 (en)

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CN105491761B (en) * 2015-12-29 2018-08-14 生迪智慧科技有限公司 The LED light of adjustable color temperature and the color temperature adjusting method of LED light
CN108200691A (en) * 2018-01-19 2018-06-22 深圳云控照明信息科技有限公司 A kind of LED PAR lamps driving circuit and LED PAR lamps
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