电工技术学报2018，Vol.33Issue(12)：2812-2820,9.DOI:10.19595/j.cnki.1000-6753.tces.170470
适用于照明和可见光通信的宽输入电压范围的分段式LED驱动电路
A Wide-Input-Voltage-Range Multi-Segmented LED Driver for Illumination and Visible Light Communication
摘要
Abstract
When illumination is combined with visible light communication (VLC), the light emitting diodes (LEDs) and their drivers gain a broader application chance than before. The LED drivers for illumination and VLC need to meet both lighting electrical standards and communication requirements. Based on an input-voltage-adaptive constant-power illumination scheme, a partial return-to-zero on-off-keying (RZ-OOK) modulation scheme is proposed for a multi-segmented LED driver to have dual functions of illumination and VLC within a wide input voltage range. A prototype LED driver was implemented for experiments. Some test results show that under the illumination mode, both power factor (PF) and total harmonic distortion (THD) values satisfy the electrical standards for lighting, and the output power could keep constant. Under the continuous few-frame VLC mode, the PF and THD values still satisfy the electrical standards for lighting, and the output power regulation is tight. Under the continuous multi-frame VLC mode, although the PF values could satisfy the electrical standards for lighting, the output power regulation is poor. Therefore, the prototype under the continuous few-frame VLC mode is suitable for both illumination and VLC applications, while the prototype under the continuous multi-frame VLC mode is more suitable for VLC applications.关键词
分段式LED驱动电路/宽输入电压范围/可见光通信/LED电流调制Key words
Multi-segmented LED driver/wide input voltage range/visible light communication (VLC)/LED current modulation分类
信息技术与安全科学引用本文复制引用
陈怡,张志义,包宇刚..适用于照明和可见光通信的宽输入电压范围的分段式LED驱动电路[J].电工技术学报,2018,33(12):2812-2820,9.基金项目
浙江省自然科学基金(LY15E070005)和浙江省"控制科学与工程"重中之重学科开放基金资助项目. （LY15E070005）
