基于ARM平台的LED光辐射导览系统

Visual Navigation System Based on Lighting LED Optical Radiation Transmission

以ARM为开发平台,利用LED照明和通信的双重功能,提出一种新型的基于照明LED光辐射传输的可视化导览系统。分析了照明LED驱动和调制编码、导览器运动轨迹识别和语音播报原理,讨论LED脉冲驱动、光传输与照明闪烁的关系,建立嵌入式环境下的电子导览地图。系统根据景点位置以图、文、声方式为游客提供导览服务,实现设定景区的自助电子导览的功能。结果表明,LED在保证景区正常照明的同时,能利用光照辐射区域实现景点位置信息传输,并完成对应景点信息的显示和播报。系统操作方便,可靠实现了景区旅游路线的可视化导览,具有较高的实用和推广价值。

LEDs are not only used as lighting devices, but also as transmitters for commumcation system. Based on lighting LED optical radiation transmission and ARM development plat- forms, a visual navigation system is introduced. The principles of lighting LED driver, modulation code, trajectory recognition and voice broadcast are analyzed. The relationship among pulse drive LED, optical transmission and lights flashing is also discussed. And the electronic map in the embedded environment is established. According to the attractions locations, services for tours by picture, text and sound are provided, and self-help electronic guide is realized. The experiment results show that the system can make normal scenic lighting ensured, and is simultaneously able to achieve position information transmission by using light radiation region attractions and complete the display and broadcast of the corresponding information of the attractions. The system, realizing the design of visual navigation of scenic traveling routes, is easy to operate and has good utility and application profit.