Design and Implementation of Dimmable LED Control Circuit with DALI Protocol

• Main Authors: Jhen-FongHuang, 黃振豐
• Other Authors: Tsorng-Juu Liang
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/22273307219049380416

碩士 === 國立成功大學 === 電機工程學系專班 === 100 === In this thesis, a digital addressable lighting interface (DALI) protocol is studied and applied to a Light Emitting Diode (LED) lighting system. The DALI protocol was introduced and the dimmable LED drivers were realized. The user interface program in this system was developed by using the Microsoft Visual C#. Also, a USB–DALI conversion bridge circuit was also built for communication between the computer and the LED driver. In addition, a micro-controller PIC 16F684 was used for dimming control, processing DALI signal, and coding the protocol program. Finally, a lighting system prototype based on DALI protocol was implemented. The output loads are three LED modules, each module includes 36 red LEDs and 13 blue LEDs. The DALI lighting control modes including individual, group, and broadcast are realized in the laboratory prototype.