CN102573234A

CN102573234A - Design method of variable-spectrum dimmable light-emitting diode (LED) illuminating system

Info

Publication number: CN102573234A
Application number: CN201210006752XA
Authority: CN
Inventors: 林方盛; 沈海平; 周小丽; 张万路; 刘木清
Original assignee: Fudan University
Current assignee: Fudan University
Priority date: 2012-01-11
Filing date: 2012-01-11
Publication date: 2012-07-11

Abstract

The invention belongs to the field of LED illumination, and in particular relates to a design method of a variable-spectrum dimmable light-emitting diode (LED) illuminating system. The LED illuminating system comprises an illuminating system, a Zigbee transmission module, a personal computer (PC) and a spectrograph, the inside of the illuminating system is divided into a plurality of channels, each channel is provided with an alternating current/direct current (AC/DC) converter for supplying power to the channel, and an LED lamp assembly of a certain wave band, a corresponding pulse-width modulation (PWM) control module and a Zigbee receiving module are installed in each channel. Each LED lamp assembly comprises a radiator, an LED lamp bar and an optical diffusion plate. The design method of the variable-spectrum dimmable LED illuminating system is simple in structure and novel in concept, achieves the purpose of simultaneously adjusting spectrum and luminance of the LED illuminating system without redundant cables by means of a wireless communication network based on a Zigbee protocol, adopts a spectrograph feedback mechanism to achieve fine adjustment control of the spectrum, and conveniently simulates different light environments to perform LED middle visual and light biological safety experiments.

Description

A kind of method for designing of variable spectrum Dimmable LED illumination system

Technical field

The invention belongs to the LED lighting field, be specifically related to a kind of method for designing of variable spectrum Dimmable LED illumination system.

Background technology

Along with people's is to the pay attention to day by day of green energy conservation lighting technology at present, and the LED technology has obtained develop rapidly in recent years.LED the long-life, is easy to plurality of advantages such as light modulation and is widely used in lighting field with its high light efficiency.When LED progresses into the room lighting field; Although what LED brought is the not available energy-efficient effects of other conventional light source; But the subjective feeling to LED illumination people down claims, and therefore just needs are simulated different luminous environments and carried out LED mesopic vision and photo bio safety experiment under the different spectrum with under the different LED brightness.

Summary of the invention

The objective of the invention is to build the experiment porch that to simulate different luminous environments, promptly design a cover and can change the illuminator that LED spectrum can carry out the PWM light modulation simultaneously.

The method for designing of the variable spectrum Dimmable LED illumination system that the present invention proposes, concrete steps are following:

Said LED illuminator comprises illuminator 1, Zigbee sending module 2, PC computer 3 and spectrometer 4; The inside of illuminator 1 is divided into a plurality of passages 5; Each passage 5 all has 6 power supplies of an AC/DC converter; PWM control module 7 is installed in the passage 5; Zigbee receiver module 8 and LED lamp group 9, the input of PWM control module 7 connects the output of Zigbee receiver module 8, and the input of PWM control module 7 connects LED lamp group 9; LED lamp group 9 outer radiator 10, LED lamp bar 11 and the optical diffusing plates 12 of being equipped with successively; Zigbee receiver module 8 in the illuminator 1 is through Zigbee network and 2 wireless connections of Zigbee sending module, and the output of spectrometer 4 connects PC computer 3, and Zigbee sending module 2 is connected on the PC computer 3; The user operates the control interface on the PC computer 3, and PC computer 3 sends change spectrum and instructs to Zigbee sending module 2; The Zigbee receiver module 8 of Zigbee sending module 2 in illuminator 1 sends signal after the networking, realizes communication; Zigbee receiver module 8 moves after receiving signal, changes the switch of the LED in 9 groups of the LED lamp groups, reaches the change of light; Provide spectrum on the spectrometer 4, feed back to PC computer 3,, make fine setting, realize accurately control with required spectrum contrast when forward lighting systems 1.

Among the present invention, Zigbee sending module 2 is the promoter of Zigbee networking as telegon.Zigbee receiver module in the illuminator receives the signal that is sended over by the Zigbee network and controls LED lamp groups 9 through PWM module 7 as route/terminal, realizes radio communication between LED lamp and PC, and the illumination system carries out the adjusting of spectrum and brightness.PC computer 3 is control centres of whole system, and the user operates on man-machine interface, it is carried out spectrum change and the PWM light modulation.The spectrum of spectrometer 4 real-time monitoring, illumination systems, feedback realizes the fine setting of spectrum in real time.

The inventive method is simple; Novel; Through wireless communication networks based on the Zigbee agreement; Need not too much cable and realize LED illuminator spectrum, the simultaneously adjustable purpose of brightness, adopt the spectrometer feedback mechanism to reach the fine setting control to spectrum, the different luminous environment of convenient simulation carries out LED mesopic vision and photo bio safety experiment.

Description of drawings

Fig. 1 is the structural diagrams of the specific embodiment of the invention.

Fig. 2 is the structural diagrams of specific embodiment of the invention illuminator.

Fig. 3 is the structural diagrams of the inner LED lamp of specific embodiment of the invention illuminator group.

Label among the figure: 1 is illuminator, and 2 is the Zigbee sending module, and 3 is the PC computer; 4 is spectrometer, and 5 for installing each passage of different-waveband LED lamp group, and 6 is the power supply AC/DC converter of each passage; PWM control module in 7 each passage, 8 is Zigbee receiver module in each passage, 9 is LED lamp group; 10 is radiator, and 11 is LED lamp bar, and 12 is optical diffusing plate.

Embodiment

Combine accompanying drawing to further specify the present invention through embodiment below.

Embodiment 1: a kind of method for designing of variable spectrum Dimmable LED illumination system, system comprise illuminator 1, Zigbee sending module 2, PC computer 3 and spectrometer 4; The inside of illuminator 1 is divided into a plurality of passages 5, and each passage 5 has 6 power supplies of an AC/DC converter, and PWM control module 7, Zigbee receiver module 8 and LED lamp group 9 are installed in the passage 5; LED lamp group 9 is installed radiator 10, LED lamp bar 11 and optical diffusing plate 12 successively.

The user is through operating the control interface on the PC computer 3, and PC computer 3 sends change spectrum and instructs to Zigbee sending module device.The Zigbee receiver module 8 of Zigbee sending module 2 in illuminator 1 sends signal after the networking, realizes communication.Zigbee receiver module 8 moves after receiving signal, changes the switch of the LED in 9 groups of the LED lamp groups, reaches the change of light.Provide spectrum on the spectrometer 4 simultaneously, feed back to PC,, make fine setting, realize accurately control with required spectrum contrast when forward lighting systems 1.

Embodiment 2: all the other are identical with embodiment 1, and the instruction that PC sends is PWM light modulation instruction, and after the Zigbee networking, the Zigbee receiver module is received the dim signal of corresponding PWM, makes the action of PWM control module, and the input current of control LED lamp group is realized light modulation.

Claims

1. the method for designing of a variable spectrum Dimmable LED illumination system is characterized in that concrete steps are following:

Said LED illuminator comprises illuminator (1), Zigbee sending module (2), PC computer (3) and spectrometer (4); The inside of illuminator (1) is divided into a plurality of passages (5); Each passage (5) all has an AC/DC converter (6) power supply; PWM control module (7) is installed in the passage (5); Zigbee receiver module (8) and LED lamp group (9), the input of PWM control module (7) connects the output of Zigbee receiver module (8), and the input of PWM control module (7) connects LED lamp group (9); Outer radiator (10), LED lamp bar (11) and the optical diffusing plate (12) of being equipped with successively of LED lamp group (9); Zigbee receiver module (8) in the illuminator (1) is through Zigbee network and Zigbee sending module (2) wireless connections, and the output of spectrometer (4) connects PC computer (3), and Zigbee sending module (2) is connected on the PC computer (3); The user operates the control interface on the PC computer (3), and PC computer (3) sends change spectrum and instructs to Zigbee sending module (2); The Zigbee receiver module (8) of Zigbee sending module (2) in illuminator (1) sends signal after the networking, realizes communication; Move after Zigbee receiver module (8) receives signal, change the switch of the LED in LED lamp group (9) crowd, reach the change of light; Spectrometer provides the spectrum when forward lighting systems (1) on (4), feeds back to PC computer (3), with required spectrum contrast, makes fine setting, realizes accurately control.