CN100485253C - Spectrum flexible adjustable LED light source system - Google Patents

Spectrum flexible adjustable LED light source system Download PDF

Info

Publication number
CN100485253C
CN100485253C CN 200710133284 CN200710133284A CN100485253C CN 100485253 C CN100485253 C CN 100485253C CN 200710133284 CN200710133284 CN 200710133284 CN 200710133284 A CN200710133284 A CN 200710133284A CN 100485253 C CN100485253 C CN 100485253C
Authority
CN
China
Prior art keywords
led
optical density
regulation
circuit
system
Prior art date
Application number
CN 200710133284
Other languages
Chinese (zh)
Other versions
CN101144573A (en
Inventor
徐志刚
焦学磊
Original Assignee
南京农业大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 南京农业大学 filed Critical 南京农业大学
Priority to CN 200710133284 priority Critical patent/CN100485253C/en
Publication of CN101144573A publication Critical patent/CN101144573A/en
Application granted granted Critical
Publication of CN100485253C publication Critical patent/CN100485253C/en

Links

Abstract

本发明涉及一种光谱柔性可调的LED光源系统,属于光生物学研究仪器领域。 The present invention relates to an LED light source tunable spectral flexible system, belonging to the field of optical instruments biological research. 本发明光源主要由系统硬件、系统软件和光谱柔性组合与调控方法构成。 The main source of the present invention, a flexible system software and spectral composition and control method consists of a hardware system. LED以活动插拔的方式与LED阵列基板连接,形成单元模块并构建成LED阵列,LED阵列与LED恒流驱动电路连接,电路通过数据线及电源线与控制器连接,再与电源连接。 Activity LED to LED array manner plug connector substrate, and constructed to form a module unit LED array, the LED array and LED constant current driving circuit, a circuit connected to the controller through the data lines and power lines, and then connected to the power source. 光谱柔性组合与调控方法包括波长组合、光密度调整、光周期调控、工作频率调控。 Regulation combination with flexible spectrum comprising a combination of a wavelength, the optical density is adjusted, light cycle regulation, regulation of the operating frequency. 本发明解决了传统光源不能提供多光谱参数组合以及不能精确定量调制光谱参数的问题,能够依据光生物学的研究实验需求,对光谱参数实施柔性调制,定量精确地获取不同波长、不同光密度、不同光周期、不同工作频率的多光谱参数组合的系列光源。 The present invention solves the problems of the conventional light sources can not provide the combination of multi-spectral parameters and spectral parameters can not be modulated accurately quantified, it is possible according to the experimental needs photobiological study, a flexible modulation of the spectral parameters embodiment, quantitatively precise acquisition of different wavelengths, different optical densities, photoperiod, multi-spectral parameter combinations of different operating frequencies series of light.

Description

一种光谱柔性可调的LED光源系统 A spectroscopic system flexible tunable LED light source

—、技术领域 - technical field

本发明涉及一种光谱柔性可调的LED (Light-Emitting Diode,发光二极管)光源系统,属于光生物学技术仪器领域,专用于植物光生物学、动物(人体)光生物学、微生物光生物学以及生物光信号传导机制的科学研究。 The present invention relates to LED (Light-Emitting Diode, a light emitting diode) light source system is a spectroscopic flexible adjustable, belonging to the field of optical instruments biology, plant dedicated to Photobiology, animal (human) light biology, microbiology photobiology scientific and bioluminescent signaling mechanism.

二、技术背景 Second, the technical background

光谱参数,包括波长、光密度(Photon Flux Densify)、光周期和工作频率,对生物的生长发育产生关键作用。 Spectral parameters, including wavelength, the optical density (Photon Flux Densify), light cycle and frequency, to produce a key role in the growth and development of the organism. 长期研究结果己经清楚地表明光谱影响生物的生长、控制生物的发育转变。 Long-term studies have clearly shown that the spectrum of biological effects of growth, change and development of biological control. 但是迄今为止,在相关的科学实验中,由于无法通过现有的实验仪器和手段获得光谱柔性可调的光源,研究者仍不能精细地调控和设定实验过程所需要的光谱参数,这制约着光生物学的精确定量研究和深入开展。 But so far, in the relevant scientific experiments, since the spectrum can not be obtained by conventional flexible tunable light source means and the experimental apparatus, the researcher can not be finely regulated and set the experimental procedure required spectral parameters, which restricts precise quantitative research and carry out light biology.

在目前的光生物学科研实验中,白炽灯、荧光灯和金属卤素灯等传统照明光源被普遍采用,但传统光源的波长和光密度分布是固定的,且波长范围很宽,实验研究所需的特定波长的光谱只能采用滤光器衰减后得到,常用的滤光器包括多层醋酸盐胶片滤光片和彩色塑料制品等。 In current biology research laboratory light, incandescent, fluorescent, metal halide and traditional lighting is generally used, but the wavelength of the light source and the light intensity distribution is fixed conventional, and a wide range of wavelength, the desired specific experimental study wavelength spectrum obtained using only the attenuation filter, the filter include salts commonly used multilayer film filter and acetate colored plastic products. 这种方法存在如下缺陷:(1)所获波长的光密度和光周期不能精确定量调控;(2)无法精量调制多种特定波长的 This method has the following drawbacks: (1) the optical density of the obtained wavelength and light cycle regulation can not be accurately quantified; (2) the modulation precision can not be more specific wavelength

光谱组合,只能获得某一波长光谱;(3)无法动态调制多波长、不同光密度、不同工作频率和不同 Spectral composition, can only achieve a certain wavelength spectrum; (3) can not be dynamically modulated multi-wavelength, different optical densities, different frequencies and different work

光周期组合的光谱参数。 Photoperiod combined spectral parameters.

与传统照明光源相比,LED因其具有波宽窄(半宽为10-15nm)、波长类型丰富、可选择性和可调控性好的特点,十分适合用于光生物学研究领域。 Compared with traditional lighting, LED wave because of its width (half width of 10-15 nm), a wavelength-rich type, and may be regulated selectively and good, very suitable for light biological research. JaoRC等(Applied-Engineering-in-Agriculture, 2003)报导了2种波长组合的LED光源;FoltaKM等(BMC Plant Biology, 2005)报导了3种波长组合的LED光源。 JaoRC other (Applied-Engineering-in-Agriculture, 2003) reported combination of two kinds of wavelengths of the LED light source; FoltaKM et (BMC Plant Biology, 2005) reported three types of LED light source wavelength combinations. 釆用上述2种光源,只能获得2种或3种组合光谱,仍不能满足光生物学的研究对多光谱和多辐射能参数组合的各种需求。 Preclude the use of the two types of light source can be obtained in combination of two or three of the spectrum, still can not meet the needs of research photobiological multi-spectral and multi-radiation parameter combinations.

光生物学研究对多光谱动态柔性可调的实验用光源有迫切的需求,这种光源在揭示光谱的生物效应、光信号传导机制、以及生物体内不同光感受系统之间相互作用等方面的研究中能发挥重要作用。 Light Experimental Biology multispectral dynamic flexible tunable light source there is an urgent demand, such a light source in the disclosed study the interaction between the biological effects of the spectrum, an optical signal transmission mechanism, and photoreception systems different aspects of the living body in can play an important role. 基于这一技术背景和科研需求,发明了"一种光谱柔性可调的LED光源系统"。 Based on this technical background and research needs, the invention "a flexible spectrum tunable LED light source system." 采用该光源, 能够对近紫外、紫、紫蓝、蓝、绿、黄绿、黄、橙、亮红、深红、远红和近红外等实施任意波长的精确组合调制,能够对各种波长的光密度、光周期、工作频率实施定量调制,得到实验研究所需的各种调制光谱,以满足光生物学的科研需求。 With this light source can be near-ultraviolet, violet, purplish blue, blue, green, yellow-green, yellow, orange, bright red, dark red, far-red and near-infrared and other embodiments of the exact combination of any wavelength modulation can be of various wavelengths the optical density, light cycle, the operating frequency modulation quantitative embodiment, various modulation spectrum to obtain the desired experimental study, in order to meet the needs of research and photobiological.

三、发明内容 III. SUMMARY OF THE INVENTION

(一)技术问题本发明的目的在于为光生物学研究提供一种光谱柔性可调的LED光源,解决传统光源不能提供多光谱参数组合以及不能精确定量调制光谱参数等方面的问题,能够依据光生物学的研究实验需求, 对光谱参数实施柔性调制,定量精确地获取不同波长、不同光密度、不同光周期、不同工作频率的多光谱参数组合的光源。 (A) Technical Problem object of the present invention is to provide a flexible spectrum LED light source tunable light biological research, solve the traditional light sources can not provide the combination of multi-spectral parameters and spectral parameters can not be accurately quantified modulation, etc., it is possible according to the light experimental study of the biological demand, a flexible modulation of the spectral parameters embodiment, quantitatively precise acquisition of different wavelengths, light sources of different optical densities, different photoperiod, multi-spectral parameters of the different operating frequencies of the combination.

(二)技术方案 (B) Technical Solution

1、 一种光谱柔性可调的LED光源系统,包括系统硬件、光谱柔性组合与调控方法、以及系统软件;系统硬件主要由LED与LED阵列、LED恒流驱动电路和控制器3个部分组成,LED以活动插拔的方式与LED阵列基板连接,形成单元模块,由若干个单元模块构建成LED阵列,LED阵列与LED恒流驱动电路连接,并安排在同一块电路板上,LED恒流驱动电路通过数据线和电源线与控制器连接,控制器与电源连接;光谱柔性组合与调控方法包括波长组合、光密度调控、光周期调控、工作频率调控的多参数组合调控;依据光谱柔性组合与调控方法编写系统软件,并与系统硬件融合:其特征在于: 1, a flexible LED light source tunable spectrum system, including hardware, in combination with flexible spectrum regulation method, and system software; hardware mainly by the LED of the LED array, LED constant current drive circuit and a controller 3 parts, activity LED is connected to the plug of the LED array substrate, a unit module, constructed from a plurality of unit modules to an LED array, an LED array with LED constant current driving circuit, and a circuit board arranged on the same, constant current LED driver circuit via a data line and the power line connected to the controller, the controller is connected to the power source; spectral composition and control method includes a flexible combination of wavelengths, the optical density control, light cycle regulation, regulation of the operating frequency of a combination of multi-parameter regulation; basis in combination with flexible spectrum the method of preparation of regulatory system software and system integration with the hardware: wherein:

1)系统硬件 1) System Hardware

1.1) LED与LED阵列LED以活动插拔的方式与LED阵列基板连接,形成单元模块,由若干个单元模块构建成LED阵列:LED阵列与LED恒流驱动电路连接;在阵列基板上,不同波长和不同数量的LED能够被任意组合,形成符合要求的光源,具有相应的光密度和复合波长: 1.1) LED to LED array and LED activity plugging manner the LED array board connected modules form a unit, constructed by the plurality of unit modules to an LED array: LED array and LED constant current driving circuit; on the array substrate, the different wavelengths and different numbers can be any combination of the LED, the light source is formed to meet the requirements, and has a corresponding optical density composite wavelength:

1.2) LED恒流驱动电路LED恒流驱动电路安排在LED阵列基板上,由驱动芯片、可调电阻和串行数据接口JP1相互连接构成,驱动芯片的引脚分别与LED阵列基板单元的同名串联支路连接, 并保持输出通道的恒流特性和驱动电流的一致性,最高输出电流值由可调电阻调整确定; 1.2) LED constant current driving circuit of the LED constant current drive circuit arranged on the LED array substrate, by the driving chip, and an adjustable resistor connected to each other serial data interfaces JP1 configuration, the drive pin of the chip is connected in series with the LED array substrate unit of the same name branch is connected, and a constant current characteristic consistency and the drive current output channels, the maximum output current value is determined by adjusting the adjustable resistance;

1.3) 控制器控制器用于控制LED恒流驱动电路,主要由单片机电路、I/O接口驱动电路、按键电路、显示接口电路和数据存储电路组成;单片机中写有软件程序,用于调控并设定LED的驱动电流、工作频率和脉冲宽度,以满足对光谱柔性调整的需求;单片机电路通过I/0接口驱动电路和串行数据接口JP1连接LED恒流驱动电路,按键电路、显示接口电路和数据存储电路均与单片机连接; 1.3) Controller The controller for controlling a constant current LED driver, the main circuit by the microcontroller, I / O interface driver circuit, a key circuit, a display interface circuit and the data storage circuit; MCU software program is written, and is provided for modulating predetermined LED drive current, operating frequency and pulse width to meet the demand for a flexible adjustment of the spectrum; microcontroller circuits via I / 0 interface drive circuit and a serial data interface connector JP1 constant current LED driver, key circuit, a display interface circuit, and data memory circuit are connected to the microcontroller;

2)系统软件 2) System Software

系统软件固化在控制器的单片机内,以KEIL C V750a为开发语言环境,采用模块化程序设计, 主要包括键盘扫描模块、显示模块、LED驱动控制模块: Curing system software in the MCU in order to KEIL C V750a language development environment, modular programming, including keyboard scan module, a display module, LED drive control module:

2.1)键盘扫描模块:用于选择S1、 S2、 S3、 S4这4个功能键,实现人机交互;当按下某个功能键后,该模块完成键的识别,并通过调用功能函数方式调用与该功能键相对应的子程序:频率调控子程序、光周期调控子程序、光密度调控子程序、系统参数保存子程序,来实现相应的参数设定与调控; 2.1) the keyboard scanning module: used to select the S1, S2, S3, S4 four function keys, interacting with a computer; when a function key is pressed, the key to complete the identification module, and by calling the function calls the function mode the function key corresponding to the subroutine: frequency control subroutine, photoperiod control subroutine, the optical density control subroutine, the subroutine save system parameters to achieve the appropriate parameter setting and regulation;

2.1.1)频率调控子程序:采用C语言编写,按S1键调用该子程序,调控并设定系统工作频率参数:共有从100HZ到1000HZ间的10种频率调节,每按一次递增100HZ,至1000 HZ后重新从100 HZ开始循环递增; 2.1.1) The frequency control subroutine: using C language, press S1 calling this subroutine, regulation and set the operating frequency of the system parameters: adjustable from a total of 10 kinds of frequencies between 1000HZ to 100HZ, 100HZ increments each press, to re-start the cycle increments from 100 HZ after 1000 HZ;

2丄2)光周期调控子程序:采用C语言编写,按S2键调用该子程序,调控并设定光周期参数: 通过脉冲宽度调制PWM实现,11种PWM参数对应于11种光周期调节,通过按键设定并调控光周期; 2 Shang 2) photoperiod control subroutine: using C language, press the key to call the subroutine S2, regulation and set parameters photoperiod: achieved by pulse width modulation PWM, PWM parameters corresponding to the 11 kinds of 11 kinds of light cycle regulation, via push button and light cycle regulation;

2丄3)光密度调控子程序:釆用C语言编写,按S3键调用该子程序,调控并设定光密度参数: 包括任一波长LED的光密度调控、各波长LED之间的光密度比例调控和系统光密度的总量调控,通过釆用以下2种方法实现: Shang 2 3) The optical density control subroutine: preclude written in C language, press S3 call the subroutine, and to set the optical density regulation parameters: optical density regulation comprises any wavelength LED optical density between the wavelength of the LED ratio control and regulation of the total system of the optical density achieved by preclude the use of the following two methods:

方法一,波长柔性组合通过活动插拔型连接设计方法实现;对于紫外、紫、紫蓝、蓝、绿、黄 A method, implemented by a combination of active wavelength flexible connector plug design method; for UV, purple, purplish blue, blue, green, yellow

5绿、黄、橙、亮红、深红、远红和近红外这12种波长的LED,总计有4095种多波长组合形成的光源,即: 5 green, yellow, orange, bright red, dark red, far-red and near-infrared wavelengths which 12 kinds of the LED, a total of 4,095 kinds of multi-wavelength light source is formed by the combination, namely:

C'12 + C严2 + + C,42 + C,2 + d + +^^+(^2 + + C】y + = 4095 Yan C'12 + C 2 + + C, 42 + C, 2 + d + + ^^ + (^ 2 + + C y + = 4095]

任一波长的光密度与该波长LED数量成正比,通过增减LED的数量的方法调控最大光密度值, Any wavelength of the optical density is proportional to the number of the wavelength of the LED, the regulation of the maximum optical density values ​​by the method of increasing or decreasing the number of LED's,

对于多波长组合的LED光源系统,通过调节各波长LED的数量比例,实现对各波长LED之间的光 For multi-wavelength LED light source system combination, by adjusting the ratio of the number of each wavelength of the LED, to realize the light between the wavelength of the LED

密率比例的调控: Tight regulation of the proportion of:

或方法二,光密度与驱动电流成正比,在LED数量和比例确定后,进一步通过调控驱动电流的方法实现对系统光密度的总量调控,采用软件程序调控电流增益,实现对驱动电流的调控,其原理如下: Or a second method, the optical density is proportional to the drive current, the number and proportion of the LED is determined, the method further achieved by regulating the driving current regulation of the optical density of the total system, using software programs current gain regulation, regulation of the drive current to achieve its principle is as follows:

1.4175 xKxG 1.4175 xKxG

x15 x15

(1) (1)

式中:Iout为驱动电流,V为串联支路的电压值,G为可编程电流增益,Rex,为可调电阻; 调定Rcx,的阻值后,最大驱动电流得以确定,在此基础上,通过程序调节电流增益G,从而得 Where: Iout is the driving current, V is the voltage value of the series branch, G is a programmable current gain, Rex, an adjustable resistance; RCX after it is set, the resistance, the maximum drive current is determined, based on the by adjusting the program current gain G, thereby obtaining

到不同的驱动电流,编程时,电流增益G由电流调整码(HC, CC(0:5)}确定: To a different drive current, the programming current adjusted by the current gain G code (HC, CC (0: 5)} ​​is determined:

G = [(H2xHC)/3] x [(l+D/32)/3] (2) G = [(H2xHC) / 3] x [(l + D / 32) / 3] (2)

式中,D=CC0 X 25+CC1X 24+CC2 X 23+CC3 X 22+CC4 X 21+CC5 X 20。 In the formula, D = CC0 X 25 + CC1X 24 + CC2 X 23 + CC3 X 22 + CC4 X 21 + CC5 X 20.

HC、 CC0、 CC1、 CC2、 CC3、 CC4、 CC5的取值为0和1,缺省值设为1,可获得128 (27) HC, CC0, CC1, CC2, CC3, the value CC4, CC5 0 and 1, the default value is set to 1, 128 can be obtained (27)

种组合参数,对应于128种驱动电流和光密度参数调整值,表l为电流调整码; Parameter combination corresponding to a driving current and the 128 kinds of optical density parameter adjustment value, adjust the code table current l;

表l 电流调 整码 Table l adjusting current code

B加 Bitl Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 B plus Bitl Bit2 Bit3 Bit4 Bit5 Bit6 Bit7

含义 — HC CCO CC1 CC2 CC3 CC4 CC5 Meaning - HC CCO CC1 CC2 CC3 CC4 CC5

缺省值 — 1 1 1 1 1 1 1 The default value --1111111

此外,通过脉冲宽度调制(Pulse Width Modulation, PWM,)的方法实现对系统光密度的总量调控,系统软件共设有从0到100%间的11种PWM参数,光密度与参数大小成正比,PWM参数由按键设定,每按一次递增10%,至100%后重新从10°/。 Further, by pulse width modulation (Pulse Width Modulation, PWM,) implemented method of regulation of the optical density of the total system, the system software has a total of 11 kinds of PWM parameters between 0 and 100%, the optical density is proportional to the size parameter , parameters are set by the PWM key, each time the increment of 10% to 100% from the post-re-10 ° /. 开始循环递增; Start the cycle increments;

2丄4)系统参数保存子程序:采用C语言编写,按S4键调该子程序,与系统设置参数存贮电路匹配,用该子程序保存所设置的参数; 2 Shang 4) The system parameters are stored subroutine: using C language, press the button to call a subroutine S4, the system parameters set to match the memory circuit, to save the parameters set by the subroutine;

2.2) 显示模块:采用C语言编写,与显示接口电路匹配,用于同步显示巳得到调控设定的各种参数,即工作频率、光周期和光密度参数; 2.2) Display Module: C language, matching the display interface circuit for synchronizing the display of various parameters obtained Pat regulated setting, i.e. the operating frequency, and the optical density parameter photoperiod;

2.3) LED驱动控制模块:采用C语言编写,通过函数调用方式,获取已经得到设置的工作频率参数、光周期参数、光密度参数,与LED恒流驱动电路匹配协调,保证光源系统按照所设定的工作频率、光周期和光密度工作; 2.3) LED drive control module: using C language, the function call, acquires the operating frequency parameter has been set, light cycle parameter, optical density parameter, the coordinate matching constant current LED driver, according to the light source system to ensure that the set the operating frequency, and the optical density of the working cycle of the light;

2.4) 多参数组合调控:分别对波长、光密度、光周期和工作频率这4种光谱参数实施不同控制量的组合,以获取所需复合光源:即通过对4095种波长、128种系统光密度总量、ll种光周期和lO 种工作频率实施多参数组合调控,总计可以得到57657600种不同光谱参数的系列复合光源,即4095 X 128X11X10 = 57657600:各模块程序写入控制器的单片机中,通过控制器控制LED恒流驱动电路,进而控制LED阵列, 使整个光源系统按照已经设定的各种参数协调工作。 2.4) multi-control parameter combination: each embodiment of the wavelength, optical density, light cycle and frequency spectra of these four kinds of combinations of different parameters of the control amount to obtain the desired compound light source: 4,095 kinds of wavelengths by i.e., system 128 kinds of optical density total, ll photoperiod and lO multiple kinds of operating frequencies embodiment regulation parameter combination, can be obtained a total of 57,657,600 kinds of light sources of different spectral complex series of parameters, i.e. 4095 X 128X11X10 = 57657600: each of the program write controller MCU module by the controller controls the constant current LED driver, thereby controlling the LED array, the entire light source system in various work coordinate parameters already set.

(三)有益效果 (Iii) the beneficial effects

光生物学研究对多光谱动态柔性可调的实验用光源有迫切的需求,"光谱柔性可调的LED光源系统"能够精细地调控和设定实验过程所需要的光谱参数,形成一系列符合实验要求的光源,是系统开展光生物学定量研究的重要支撑。 Light Experimental Biology multispectral dynamic flexible tunable light source there is an urgent demand, "tunable spectral flexible LED light source system" and can be set finely regulate experiment required spectral parameters, a series of experiments in line with the light source required is an important support to carry out quantitative studies photobiological system.

与传统照明光源相比,本发明"光谱柔性可调的LED光源系统"具有如下有益效果: Compared with traditional lighting, the present invention is "flexible spectrum tunable LED light source system" has the following advantages:

1、 传统光源的波长和光密度不可调,波动大,不能满足实验对光谱多样性的需求。 1, the conventional wavelength and optical density of the light source is not adjustable, fluctuations, can not meet the demand for experimental spectrum diversity. 本发明光源系统采用LED,其优点是波长窄、分布稳定、波长类型丰富、可选择性和可调控性好,符合光生物学领域的实验要求。 The light source system of the present invention uses LED, the advantage that the narrow wavelength distribution of stable, rich wavelength type, and selectively adjustable resistance, light field with the experimental biological requirements.

2、 本光源系统能够对波长、光密度、光周期和工作频率这4种参数中任意一个参量实施精确、 定量的设定和调控。 2, the light source system can be any of a parameter precise embodiment, and quantitative regulation setting wavelength, optical density, light cycle and operating frequency of these four parameters.

3、 本发明光源系统能够对波长、光密度、光周期和工作频率这4种参数实施不同控制量的组合,形成一系列符合实验要求的复合光源。 3, the light source system of the present invention can be implemented as a combination of different control amount of the wavelength, optical density, light cycle and operating frequency of these four parameters, a series of composite source with the experimental requirements.

4、 本发明光源系统能够形成57657600种系列光源,为光生物学实验提供了充分的选择。 4, the light source system of the present invention is capable of forming a series 57657600 kinds of light sources is selected to provide sufficient light biological experiments.

5、 采用本发明光源系统,科研实验设计者能够依据实验需要,自己动手设置、组合、调整光谱参数,在第一时间里形成最能满足实验设计思路的最优光源,确保科研人员创造性的实现和主观能动性的发挥。 5, a light source system of the present invention, the designer can experiment based on experimental research needs, yourself provided, in combination, to adjust the spectral parameter, the optimum light source is formed to meet the best experimental design ideas in the first time, researchers ensure creative and initiative play.

四、 附图说明 IV BRIEF DESCRIPTION

图1光谱柔性可调的LED光源系统总体结构示意图。 1 a schematic view of the overall structure of a flexible spectrum tunable LED light source system.

图2 LED阵列基板单元原理图。 FIG 2 LED array substrate unit schematics.

图3 LED恒流驱动电路。 FIG 3 LED constant current drive circuit.

图4 单片机电路原理图。 Microcontroller circuit diagram of FIG. 4.

图5 1/0接口驱动电路。 FIG 5 1/0 driving circuit.

图6按键电路。 Key circuit 6 in FIG.

图7显示接口电路。 Figure 7 shows an interface circuit.

图8系统设置参数存贮电路。 FIG storage circuit 8 system setup parameters.

图9系统软件流程图 System software flow chart of FIG. 9

五、 具体实施方式 V. DETAILED DESCRIPTION

(—)构建光源系统的硬件与软件 (-) Construction of a light source system hardware and software

(1)根据图2和图3的原理图,设计相对应的电路,并制作电路板。 (1) According to the principle of FIG. 2 and FIG. 3, corresponding to the circuit design, and production of circuit boards. 将图3所示的LED恒流驱动电路直接设计制作在图2所示的阵列基板上,并将图2中的OUT0 —OUT15与图3中的OUT0 一OUT15连接。 The constant current shown in FIG. 3 LED drive circuit design directly on the array substrate shown in FIG. 2 and FIG. 2 OUT0 -OUT15 in FIG 3 is connected to a OUT0 OUT15. 图2中,在对应于任一LED的位置(Dl— D80)上焊接带孔插接件。 In FIG. 2, the position (Dl- D80) corresponds to any of a welded perforated LED connector. 所有LED接件上,也能很便捷地从这些带孔插接件上拔下,这种活动插拔的设计保证了任意波长和数量的LED能够方便快捷被安装在任意位置上,实现对光源系统的波长和光密度的柔性组合调控。 All the LED connection member, can be very easily disconnected from the connector hole such that this plug design ensures the activity of any number of wavelengths and the LED can be mounted at any convenient location on the realization of the light source the flexible combination of wavelength and the optical density of the regulation system. (2)根据图4、图5、图6、图7和图8所示,设计控制器的印刷电路板,制作出控制器。 (2) According to FIG. 4, 5, 6, 7, and shown in the printed circuit board design of the controller 8, to produce the controller. (3)按照图9所示的软件系统流程图,通过KEELC51编辑、编译开发环境,采用C语言编制系统软件程序,调试成功后写入控制器中的单片机。 (3) software system according to the flowchart shown in FIG. 9, by KEELC51 edit, compile development environment, system software using C language program, the controller writes the microcontroller after successful commissioning. (二)本光源系统在植物光生物学实验中的应用 (Ii) application of the optical light source system in plant biology experiments

1、 材料与方法 1, Materials and Methods

(1)以菊花克隆苗为实验材料,切取1茎1叶,平均株髙1.5咖进行生根培养实验。 (1) daisy-clonic as material, a cut leaf stem 1, the average strain coffee Gao 1.5 rooting culture experiments. 以MS为基本培养基,蔗糖30gi/1,琼脂浓度6.5g.1/1, pH调至5.8,封口膜封口,封口膜通气孔为4孔, 通气孔滤膜直径10mm,滤膜微孔0.5拜。 MS basic medium, sucrose 30gi / 1, the concentration of agar 6.5g.1 / 1, pH was adjusted to 5.8, parafilmed 4 is sealed membrane vent hole, a vent filter diameter 10mm, filter membrane 0.5 worship. 每瓶接种5株,共计100瓶。 Inoculation bottle 5, a total of 100 bottles. 在23i2TC温度、16h光照、 70±5%相对湿度。 In 23i2TC temperature, 16h light, 70 ± 5% relative humidity. 预培养3d后放置于8种LED光源系统中,培养35d后取出,测试生物指标。 After preincubation 3d eight kinds of LED light source is placed in the system, cultured 35d removed, tested for biological indicators.

2、 设置8种LED光源,如表2 2, eight kinds of LED light source is provided, as shown in Table 2

表2 8种光源的光谱参数<table>table see original document page 8</column></row> <table>(三)组合、调制并形成光源。 Table 28 seed light source spectral parameters <table> table see original document page 8 </ column> </ row> <table> (III) in combination, form the light source and modulated.

依据实验设计表2对光谱参数的要求,调制并形成光源的具体方式如下:(1)根据实验所要求的波长组合,选择对应波长的LED; (2)依据实验所要求的各波长光密度比例、最大系统光密度总量和单颗LED的光密度值,确定各波长LED的数量(某波长LED的数量=该波长的光密度比例X 最大系统光密度值+单颗LED的光密度),并均匀排列插接在LED阵列基板单元(图2)上;(3) 依据实验空间,组合相应数量的LED阵列基板单元,通过数据线和电源线与控制器连接,再将控制器接通电源;(4)按S3键(图6、图9)设定并调控系统光密度总量;(5)按S1键(图6、图9) 投定光源系统的工作频率-.(6)按S2键(图6、图9)设定并调控光源系统的光周期;(7)按S4 键,单片机记忆并锁定上述所调整确定的各种参数组合。 DETAILED according to the requirements experimental design in Table 2 on the spectral parameters, modulation and the light source is formed as follows: (1) The combination of wavelengths, the experiment required, select a corresponding wavelength LED; (2) based on optical density ratios of each wavelength experiments required the maximum optical density of the total system and a single LED optical density values, the number of LED determined for each wavelength (a wavelength of the LED optical density ratio = number of wavelength X of the optical density maximum system + single LED optical density), and uniformly arranged on the LED array substrate docking unit (2); (3) according to the experimental space, a corresponding number of combinations of the LED array substrate unit, via a data and power cables to the controller, then power controller ; (4) press S3 (FIG. 6, FIG. 9) to set the optical density and total control system; (5) press S1 (FIG. 6, FIG. 9) administering a given light source system operating frequency - (6) press. key S2 (FIG. 6, FIG. 9) to set and regulate the light source system cycle; (7) according to the S4 key, the microcontroller memory and lock various combinations of the above parameters determined by the adjustment. 上述参数调整设定好后,光源系统在控制器中单片机的统一协调管理下,自动按照所设定的参数工作。 After the above parameter adjustment is set, the light source system in the harmonization of the microcontroller management controller automatically set to the parameters.

根据上述实施方法设置并构建好LED光源系统后,再将实验材料(如植物)移入该光源系统。 After setting the above-described embodiment of the method and system construct a good LED light source, then the test materials (e.g., plant) sources into the system. 在使用或光生物学实验过程中,可以根据需要,随时调节光源系统的波长组合参数、工作频率参数、 光密度和光周期参数。 Or biological experiments using an optical process, as needed, at any time to adjust the wavelength of the light source system combination of parameters, frequency parameters, optical density and light cycle parameters. (四)结果与分析 (D) Results and Analysis

所有实验数据重复测试3次,使用SAS8.2软件做差异显著性测验,实验结果分析如表3、表表3 8种光源对菊花克隆苗叶绿素含量的影响 All experimental test was repeated three times, using the software to do SAS8.2 significant difference test, experimental results are shown in Table 3, the seed light source 38 exemplar Effect of Chrysanthemum clonic Chlorophyll Content

<table>table see original document page 9</column></row> <table>注:不同小写宇母代表在0.05水平差异显著 <Table> table see original document page 9 </ column> </ row> <table> NOTE: Yu parent different lower case represents a significant difference of 0.05

结论 in conclusion

表2的数据表明,本发明"光谱柔性可调的LED光源系统"能够很好地满足光生物学实验对多种光谱参数设定的要求。 Data in Table 2 show that the present invention is "flexible spectrum tunable LED light source system" can satisfy the requirement of the optical spectrum of biological experiments various parameter settings. 表3和表4的数据表明,在卯OHz、 60°/。 The data in Table 3 and Table 4 show that the d OHz, 60 ° /. 光周期和50-60 u mol • m—2 • s ' 系统光密度总量的参数组合下,与其它6种波长组合的光源相比,红光(654nm)和蓝光(458nm) 组合的光源对植物克隆苗的生长最为有效。 Photoperiod and 50-60 u mol • m-2 • the total amount of the combination of parameters s' system optical density, compared to six other light wavelengths in combination, red light (654nm) and (458 nm) blue combination light source plant growth clonic most effective.

Claims (1)

1、一种光谱柔性可调的LED光源系统,包括系统硬件、光谱柔性组合与调控方法、以及系统软件;系统硬件主要由LED阵列、LED恒流驱动电路和控制器3个部分组成,LED以活动插拔的方式与LED阵列基板连接,形成单元模块,由若干个单元模块构建成LED阵列,LED阵列与LED恒流驱动电路连接,并安排在同一块电路板上,LED恒流驱动电路通过数据线和电源线与控制器连接,控制器与电源连接;光谱柔性组合与调控方法包括波长组合、光密度调控、光周期调控、工作频率调控的多参数组合调控;系统软件依据光谱柔性组合与调控方法编写,并与系统硬件融合;其特征在于:1)系统硬件1. 1)LED阵列LED以活动插拔的方式与LED阵列基板连接,形成单元模块,由若干个单元模块构建成LED阵列;LED阵列与LED恒流驱动电路连接;在阵列基板上,不同波长和不同数量的LED能够被 1, an LED light source tunable spectral flexible system, including hardware, in combination with flexible spectrum regulation method, and system software; system hardware consists of an LED array, LED constant current drive circuit and a controller 3 parts, to LED activity way plug connection with the LED array substrate, forming the unit modules, constructed from a plurality of unit modules to an LED array, an LED array with LED constant current driving circuit, and arranged on the same circuit board, LED constant current driving circuit data and power cables connected to the controller, the controller is connected to the power source; spectral composition and control method includes a flexible combination of wavelengths, the optical density control, light cycle regulation, regulation of the operating frequency of a multi-parameter combinations regulated; software based system in combination with flexible spectrum the method of preparation of regulation, and fused with the system hardware; characterized in that: a) system hardware 1. 1) LED to LED array active way plug connection of the LED array substrate, forming the unit modules, a plurality of unit modules built from an LED array to ; LED array and LED constant current driving circuit; on the array substrate, and varying amounts of different wavelengths of the LED can be 意组合,形成符合要求的光源,具有相应的光密度和复合波长;1. 2)LED恒流驱动电路LED恒流驱动电路安排在LED阵列基板上,由驱动芯片、可调电阻和串行数据接口(JP1)相互连接构成,驱动芯片的引脚分别与LED阵列基板单元的同名串联支路连接,并保持输出通道的恒流特性和驱动电流的一致性,最高输出电流值由可调电阻调整确定;1. 3)控制器控制器用于控制LED恒流驱动电路,该控制器主要由单片机电路、I/O接口驱动电路、按键电路、显示接口电路和数据存储电路组成;单片机中写有软件程序,用于调控并设定LED的驱动电流、工作频率和脉冲宽度,以满足对光谱柔性调整的需求;单片机电路通过I/O接口驱动电路和串行数据接口(JP1)连接LED恒流驱动电路,按键电路、显示接口电路和数据存储电路均与单片机连接;2)系统软件系统软件固化在控制器的单片 Intended combination, meet the requirements of the light source is formed, and having a corresponding optical density composite wavelength;. 1 2) LED constant current drive circuit of the LED circuit arrangement of a constant current driving the LED array on the substrate, by the driving chip, and the serial data adjustable resistor consistency constant current characteristic and the drive current interface (JP1) which are interconnected, the pins are driven with the same name as the chip LED array substrate unit branch is connected in series, and maintaining output channels, the maximum output current value is adjusted by the adjustable resistor determined;. 13) controller the controller for controlling the constant current LED driver circuit, a controller circuit mainly by the microcontroller, I / O interface driver circuit, a key circuit, a display interface circuit and the data storage circuit; MCU software written procedure, and to set the drive current of the LED for regulating the operating frequency and pulse width to meet the demand for a flexible adjustment of the spectrum; microcontroller constant current LED driver circuit is connected through I / O interface, and the serial data interface driving circuit (JP1) circuit, a key circuit, a display interface circuit and the data storage circuits are connected to the microcontroller; 2) curing system software in a single software system controller 内,在KEIL C V750a开发语言环境中用C语言编程,采用模块化程序设计,主要包括键盘扫描模块、显示模块、LED驱动控制模块:2. 1)键盘扫描模块:用于选择S1、S2、S3、S4这4个功能键,实现人机交互;当按下某个功能键后,该模块完成键的识别,并通过调用功能函数方式调用与该功能键相对应的子程序:频率调控子程序、光周期调控子程序、光密度调控子程序、系统参数保存子程序,来实现相应的参数设定与调控;2. 1.1)频率调控子程序:采用C语言编程,按S1键调用该子程序,调控并设定系统工作频率参数:共有从100HZ到1000HZ间的10种频率调节,每按一次递增100HZ,至1000HZ后重新从100HZ开始循环递增;2. 1.2)光周期调控子程序:采用C语言编程,按S2键调用该子程序,调控并设定光周期参数:通过脉冲宽度调制PWM实现,11种PWM参数对应于11种光周期调节,通过 Inside, with the development KEIL C V750a C programming language environment, modular programming, including keyboard scan module, a display module, LED drive control module: 21) Keyboard scanning module: used to select the S1, S2, S3, S4 four function keys, interacting with a computer; when a function key is pressed, the key to complete the identification module, and invoke the corresponding function key by calling the subroutine performance function: frequency regulator program, photoperiod control subroutine, the optical density control subroutine, the subroutine save system parameters to achieve the appropriate parameter setting and regulation; 1.1 2) frequency control subroutine: using C programming language, to call the sub-press S1 program, regulation and set the operating frequency of the system parameters: adjustable from a total of 10 kinds of frequencies between 1000HZ to 100HZ, each time the increment 100HZ, 1000HZ to re-start the cycle from 100HZ increments; 2 1.2) photoperiod control subroutine: using C programming language, press the key to call the subroutine S2, regulation and set parameters photoperiod: achieved by pulse width modulation PWM, PWM parameters corresponding to the 11 kinds of 11 kinds of light cycle regulation, by 按键设定并调控光周期;2. 1.3)光密度调控子程序:采用C语言编程,按S3键调用该子程序,调控并设定光密度参数:包括任一波长LED的光密度调控、各波长LED之间的光密度比例调控和系统光密度的总量调控,通过采用以下2种方法实现:方法一,波长柔性组合通过活动插拔型连接设计方法实现;对于紫外、紫、紫蓝、蓝、绿、黄绿、黄、橙、亮红、深红、远红和近红外这12种波长的LED,总计有4095种多波长组合形成的光源,即:任一波长的光密度与该波长LED数量成正比,通过增减LED的数量的方法调控最大光密度值,对于多波长组合的LED光源系统,通过调节各波长LED的数量比例,实现对各波长LED之间的光密度比例的调控;或方法二,光密度与驱动电流成正比,在LED数量和比例确定后,进一步通过调控驱动电流的方法实现对系统光密度的总量调控,采用软 Buttons to set and regulate photoperiod; 2 1.3) optical density control subroutine: programming using C language, press S3 calling this subroutine, the regulation and the optical density parameter set: including any wavelength LED optical density of the regulation, each of the the optical density and the total amount regulation of the regulatory system of the optical density between the wavelengths of the LED, is achieved by using the following two methods: a method, implemented by a combination of active wavelength flexible connector plug design method; for UV, purple, purplish blue, blue, green, yellow-green, yellow, orange, bright red, dark red, far-red and near-infrared wavelengths which 12 kinds of the LED, a total of 4,095 kinds of multi-wavelength light source is formed by the combination, namely: any wavelength and the optical density wavelength of the LED is proportional to the number of the regulation by the method of maximum optical density value of increasing or decreasing the number of LED, the LED light source for multi-wavelength systems combined, by adjusting the ratio of the number of each wavelength of the LED, to realize the optical density ratio between the wavelength of the LED regulation; or second method, the optical density is proportional to the drive current, the number and proportion of the LED is determined, the method further achieved by regulating the driving current regulation of the optical density of the total system, soft 程序调控电流增益,实现对驱动电流的调控,其原理如下:式中:Iout为驱动电流,V为串联支路的电压值,G为可编程电流增益,Rext为可调电阻;调定Rext的阻值后,最大驱动电流得以确定,在此基础上,通过程序调节电流增益G,从而得到不同的驱动电流,编程时,电流增益G由电流调整码{HC,CC(0:5)}确定:G=[(1+2×HC)/3]×[(1+D/32)/3](2)式中,D=CC0×25+CC1×24+CC2×23+CC3×22+CC4×21+CC5×20HC、CC0、CC1、CC2、CC3、CC4、CC5的取值为0和1,缺省值设为1,可获得128(27)种组合参数,对应于128种驱动电流和光密度参数调整值,此外,通过脉冲宽度调制PWM的方法实现对系统光密度的总量调控,系统软件共设有从0到100%间的11种PWM参数,光密度与参数大小成正比,PWM参数由按键设定,每按一次递增10%,至100%后重新从10%开始循环递增;2. 1.4)系统参数保存子程序;采用C语言编 Current gain-control program, to realize the regulation of the drive current, which works as follows: where: the drive current lout, V is the voltage value of the series branch, G is a programmable current gain, is adjustable resistor Rext; the set-Rext after the resistance value, the maximum drive current is determined, based on this, adjusting the current gain G by the program, thereby obtaining different drive currents, programming, adjusting the current gain G by the current code {HC, CC (0: 5)} ​​determined : G = [(1 + 2 × HC) / 3] × [(1 + D / 32) / 3] (2) where, D = CC0 × 25 + CC1 × 24 + CC2 × 23 + CC3 × 22 + CC4 × 21 + CC5 × 20HC, CC0, CC1, CC2, CC3, CC4, CC5 the values ​​of 0 and 1, the default value is set to 1, 128 can be obtained (27) in combination of parameters corresponding to the driving current 128 species and the optical density parameter adjustment values, in addition, to achieve regulation of the optical density of the total system by pulse width modulation PWM method, system software from a total of 11 kinds of PWM parameters between 0 and 100%, the optical density is proportional to the size parameter, PWM parameters set by the key, each time the increment of 10% to 100% re-start the cycle from 10% increments; 2 1.4) save the system parameter routine; using C language ,按S4键调用该子程序,与系统设置参数存贮电路匹配,用该子程序保存所设置的参数;2. 2)显示模块:采用C语言编程,与显示接口电路匹配,用于同步显示已得到调控设定的各种参数,即工作频率、光周期和光密度参数;2. 3)LED驱动控制模块:采用C语言编程,通过函数调用方式,获取已经得到设置的工作频率参数、光周期参数、光密度参数,与LED恒流驱动电路匹配协调,保证光源系统按照所设定的工作频率、光周期和光密度工作;2. 4)多参数组合调控:分别对波长、光密度、光周期和工作频率这4种光谱参数实施不同控制量的组合,以获取所需复合光源:即通过对4095种波长、128种系统光密度总量、11种光周期和10种工作频率实施多参数组合调控,总计可以得到57657600种不同光谱参数的系列复合光源,即4095×128×11×10=57657600;各模块程序写入控制器 ., According to the S4 key subroutine call, with the system parameters set to match the memory circuit, to save the parameters set by the subroutine; 22) Display Module: C programming language, and display interface matching circuit for synchronizing display regulation has been set various parameters, i.e. the operating frequency, and the optical density parameter photoperiod; 2 3) LED drive control module: using C programming language, the function call, acquires the operating frequency parameter has been set, photoperiod parameter, optical density parameters, and constant current LED driver matching coordinate system operating according to the light source to ensure that the set operating frequency, and the optical density photoperiod; 24) a combination of multi-parameter regulation: wavelength, respectively, optical density, light cycle and frequency spectra of these four embodiments a combination of different parameters of the control amount to obtain the desired compound light source: 4,095 kinds of wavelengths by i.e., the total optical density of 128 kinds of systems 11 and 10 photoperiod embodiment multiple operating frequency parameter combinations regulation, can be obtained a total of 57,657,600 kinds of light sources of different spectral complex series of parameters, i.e., 4095 × 128 × 11 × 10 = 57657600; write controller program modules 单片机中,通过控制器控制LED恒流驱动电路,进而控制LED阵列,使整个光源系统按照已经设定的各种参数协调工作。 Microcontroller, controlled by the controller constant current LED driver, thereby controlling the LED array, the entire light source system in various work coordinate parameters already set.
CN 200710133284 2007-10-16 2007-10-16 Spectrum flexible adjustable LED light source system CN100485253C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200710133284 CN100485253C (en) 2007-10-16 2007-10-16 Spectrum flexible adjustable LED light source system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200710133284 CN100485253C (en) 2007-10-16 2007-10-16 Spectrum flexible adjustable LED light source system

Publications (2)

Publication Number Publication Date
CN101144573A CN101144573A (en) 2008-03-19
CN100485253C true CN100485253C (en) 2009-05-06

Family

ID=39207228

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200710133284 CN100485253C (en) 2007-10-16 2007-10-16 Spectrum flexible adjustable LED light source system

Country Status (1)

Country Link
CN (1) CN100485253C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101886757A (en) * 2009-05-12 2010-11-17 东芝照明技术株式会社;株式会社东芝 Illumination device

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009124432A1 (en) * 2008-04-11 2009-10-15 深圳市联德合微电子有限公司 An led constant current driving circuit
CN101593469B (en) 2008-05-30 2013-12-11 利亚德光电股份有限公司 LED display screen composed of pixel points of different densities and display method thereof
CN101384127B (en) 2008-10-16 2012-07-04 上海交通大学 Energy-saving light modulating device with unit power factor
CN101868080B (en) 2009-04-14 2013-03-20 海洋王照明科技股份有限公司 Circuit of portable signal lamp
CN101561109B (en) 2009-05-13 2010-07-07 华南理工大学 Method for displaying light effects based on primary function mode
CN102182983A (en) * 2010-12-10 2011-09-14 浙江大学 Light source device and method for tuning light energy spectrum
CN102630511A (en) * 2011-02-14 2012-08-15 同方光电科技有限公司 Adjustable full spectrum LED (light-emitting diode) light source device for plant growth
CN102573238B (en) * 2012-01-13 2014-08-06 复旦大学 Spectrum feedback method of variable-spectrum dimmable light-emitting diode (LED) illumination system
CN103369763B (en) * 2012-03-29 2016-01-20 海洋王照明科技股份有限公司 One kind led lights and a drive circuit
CN102917493B (en) * 2012-09-29 2015-03-04 杭州汉徽光电科技有限公司 Intelligent semiconductor illumination system for plant growth and spectral modulation method thereof
CN104113953B (en) * 2013-04-17 2017-04-19 刘红超 Electro-optical device and control method
CN104076846B (en) * 2014-06-13 2017-09-26 广州中大中鸣科技有限公司 A kind of plant culture LED Intelligent control system of supplementary lighting
CN104320197B (en) * 2014-10-16 2017-07-04 北京理工大学 A kind of multispectral LED modulated light sources for wireless light communication
CN104486002B (en) * 2014-12-15 2017-05-24 北京理工大学 Wavelength division multiplexing receiving system for wireless optical communication
CN105163471B (en) * 2015-10-29 2017-09-26 横店集团得邦照明股份有限公司 One kind is based on the adjustable LED plants light-source system of red blue light brightness
CN107691008A (en) * 2017-09-29 2018-02-16 安徽省华腾农业科技有限公司 A kind of method for promoting plant growth

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1575394A (en) 2001-08-23 2005-02-02 奥村幸康 Color temperature-regulable led light
CN1770934A (en) 2005-10-13 2006-05-10 上海国皓电子有限公司 Non-linear pulse-width modulation PWM control device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1575394A (en) 2001-08-23 2005-02-02 奥村幸康 Color temperature-regulable led light
CN1770934A (en) 2005-10-13 2006-05-10 上海国皓电子有限公司 Non-linear pulse-width modulation PWM control device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101886757A (en) * 2009-05-12 2010-11-17 东芝照明技术株式会社;株式会社东芝 Illumination device
CN101886757B (en) 2009-05-12 2012-08-29 东芝照明技术株式会社 Illumination device

Also Published As

Publication number Publication date
CN101144573A (en) 2008-03-19

Similar Documents

Publication Publication Date Title
EP2164568B1 (en) System for providing illumination and physiological stimuli
TWI310532B (en) A light source driving apparatus, a lighting system, and a method to improve the brightness uniformity in a light source
US9164316B2 (en) Color regulating device for illumination and apparatus using the same, and method of regulating color
US8436556B2 (en) LED lighting system
US20080119912A1 (en) Phototherapy lights
JP2010511402A (en) Control equipment for greenhouse
US8453376B2 (en) Full spectrum sunshine simulation apparatus for developing biological growth
JP5838145B2 (en) Color temperature adjusting device, color temperature adjusting equipment using the same, and color temperature adjusting method
US8656636B2 (en) Biological optimization systems for enhancing photosynthetic efficiency and methods of use
CN101883458B (en) Method and system for high efficiency, fast transient multi-channel LED driver
Matthijs et al. Application of light‐emitting diodes in bioreactors: Flashing light effects and energy economy in algal culture (Chlorella pyrenoidosa)
CA2732086C (en) Apparatus and method for plant metabolism manipulation using spectral output
US6554439B1 (en) Illumination apparatus for simulating dynamic light conditions
CN101561083B (en) LED light-emitting device with variable color temperature and implementation method thereof
CN101427067A (en) Artificial solar light system using a light emitting diode
CN102523991A (en) Networked intelligent plant growth system
US9480120B2 (en) Lighting apparatus
CN102077767B (en) Intelligent plant supplementary lighting method and device
JP2008269947A (en) Liquid crystal display device
KR200362989Y1 (en) Apparatus for culturing dye plants using LED light source
CN103945604A (en) Light adjusting method, light adjusting device, adjustable light source and display equipment
JP3177646U (en) LED lamp drive device that controls color temperature / color with power carrier wave
JP2006511079A (en) Sensing light rays emitted from multiple light sources
CN101644395B (en) Special spectrum simulation illumination device for plant cultivation and simulation method
CN103135540A (en) Plant tissue culture environmental information monitoring and simulating system

Legal Events

Date Code Title Description
C06 Publication
C10 Entry into substantive examination
C14 Grant of patent or utility model
C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 210095 NANJING, JIANGSU PROVINCE TO: 257091 DONGYING, SHANDONG PROVINCE

ASS Succession or assignment of patent right

Owner name: DONGYING TECH TOP OPTO-ELECTRONIC TECHNOLOGY CO.,

Free format text: FORMER OWNER: NANJING AGRICULTURAL UNIVERSITY

Effective date: 20120319

C56 Change in the name or address of the patentee

Owner name: SHANDONG TECH TOP OPTO-ELECTRONIC TECHNOLOGY CO.,

Free format text: FORMER NAME: DONGYING TECH TOP OPTO-ELECTRONIC TECHNOLOGY CO., LTD.

CF01