Scene simulation lighting system

Abstract

The present invention discloses a scene simulation lighting system which comprises a switch power supply, a single chip microcomputer control circuit with three rectangular square wave output ends, a control end which is connected to the single chip microcomputer control circuit, an operation circuit which is used for adjusting the duty ratio of the rectangular square waves outputted by the three rectangular square wave output ends of the single chip microcomputer control circuit, red light, green light and blue light LED driving circuits which are correspondingly connected to the three rectangular square wave output ends of the single chip microcomputer control circuit, and red light, green light and blue light LEDs which are correspondingly connected to the output ends of the red light, green light and blue light LED driving circuits. According to the system, a control command is emitted to the single chip microcomputer control circuit through the operation circuit, thus changed pulse width signals are outputted to each of the LED driving circuits, the driving current of LEDs with different color temperatures is changed, the adjustment of color rendering index and brightness of LED lamps is realized, and needed light is simulated according to a scene.

Description

technical field [0001] The invention relates to the lighting field, in particular to a scene simulation lighting system. Background technique [0002] Traditional lighting systems have fixed brightness, are not energy-saving, and have defects such as small light spots and non-modulation, which are far from meeting the requirements of modern society. According to different scenarios, it is a mainstream pursuit to create a lighting brightness that is suitable for psychology and reduce fatigue, and to synthesize a comfortable lighting environment. [0003] LED lights have the advantages of narrow band, DC power supply, small size, long life, energy saving and environmental protection, but they also have defects such as single spectrum and large heat generation. In order to achieve adjustable brightness and color temperature, the following design methods can be used: [0004] ①Adopt LED synthesis of different colors, use the combination of three primary colors red (R) light LE...

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Problems solved by technology

[0004] ①Adopt LED synthesis of different colors, use the combination of three primary colors red (R) light LED, green (G) light LED, and blue (B) light, and control the driving current of red, green, and blue lights respectively, and the color temperature and color rendering index ( Ra) is greater than 90 adjustable LED lights, but its driving circuit is complex and the cost is high

[0005] ② Combination of fluorescent lamps of various colors, such as the combination of red (R), blue (B) and green (G) colors, synthetic fluorescent lamps with variable color temperature and color rendering index (Ra) greater than 80, but The excitation efficiency of red fluorescent lamps excited by blue fluorescent lamps is extremely low, resulting in extremely low fluorescent lamp illumination and poor usability

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