光通信技术2011，Vol.35Issue(3)：58-60,3.
照明LED语音交通导向系统的研究
A study of urban traffic voice guiding system based on LED road light
摘要
Abstract
Traffic guiding is very important in Intelligent Traffic System. The urban traffic guiding system model with high brightness LED road light as a transmitter and PIN detectors as the receiver is proposed. Due to their large modulation bandwidth,LEDs are not only used as lighting devices, but also as transmitters for communication system. In this paper, a four-lane framework is outlined. The relations between bending angle and incidence angle and the high of LED road light are designed in 200m communication distance where the traffic information can be carried out. The theoretical analysis and experiment results verified that the LED traffic voice guiding system is possible and satisfied to communicate, when the bending angle and the semi-angle at half-power of LED lights α=15° and θ 1/2=60°, respectively, and the incidence angle of PIN detectors Φc=30° .关键词
LED通信/语音导向/发射角/分集接收Key words
LED road lights/ voice leading traffic/ transmit angle/ diversity reception分类
信息技术与安全科学引用本文复制引用
赵晓燕,何宁,何志毅..照明LED语音交通导向系统的研究[J].光通信技术,2011,35(3):58-60,3.基金项目
国家自然科学基金(60177036)资助. （60177036）
