Research and Design of Variable-Wavelength LED System Via Scanning Regulation

• Main Authors: Zheng Xian Lai, 賴政賢
• Other Authors: 楊兆華
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/02906215655868002367

碩士 === 明新科技大學 === 電機工程研究所 === 97 === This research is mainly focused on the high power RGB LED optoelectronic devices and is also to design a set of controllable LED wavelength and its luminous intensity as a multiple lighting system. Color control circuit, is the idea to use the regular microcontroller and have it integrated simultaneously with the concept of scanning regulation for utilizing human’s eyes on the persistence of vision to achieve the color mixed effect. Therefore, it can reduce substantially the complexity of circuit design and the associated cost of its components. The circuit of luminous intensity is a type of flyback converter collocated with the circuit of constant current driver. The luminous intensity modular has the even effect on color and brightness. The spectrometer measuring system - Instrument Systems CAS-140B can be used further to proceed with the measurement of the related optical parameters. Eventually, Pspice is used to proceed with the simulation of flyback converter and constant current circuit. The outcome of the actual measurement is taken to verify its possibility.