Research And Development Of LED Lighting Model Controller Based On USB

In recent years, with the development of lighting technology, the effects of new landscape lighting evolutes from simple variable to dynamic variable. With the coming of green environmental protection century, the LED semiconductor begins increasingly widely used in the field of lighting as a new form of light.The application of digital technology in the field of LED lighting makes the LED landscape more colorful, as well as provides technical conditions for the intelligent control of LED.As a new computer bus, USB is a compact advantages to the computer peripheral connection technology bring significant change because its plug-and-play, hot-pluggable interface. USB technology has good prospects in data transmission and data storage, and other fields. Embedded USB system research and development will further the USB technology applications, as well as brought new world at embedded system application.With the application of modern computer technology at LED can not only rational plan for the control and management to landscape lighting, but also make full use of new lighting technology advantages. It makes landscape lighting more fit for the natural world, the environment and people internalized as a whole, which has profound practical significance to a program for LED lighting intelligent control system modeling.In response to these developments, the article analysis the LED lighting modeling controllers and proposes a USB-based LED lighting controller design. The controller is a member of COLORPIXEL intelligent lighting control system, based on the ARM7 core MCU, Manchester code precision generator, and a large-capacity data storage. It achieves three work methods, synchronous, playback and storage.The paper, a total of six chapters can be divided into four parts. At the first 2 chapters, the main content is investigate LED lighting technology landscape the development, analysis the pros and cons of main products at home and abroad, feasibility analysis of LED controller, detail hardware configuration and software features. PartⅡ, chapter 3 and 4, analysis the hardware design and software design of controller. PartⅢ, chapter 5, introduce the development and debugging tools briefly, test the code software functionality and the system. Chapter 6 is the fourth part, summes up the results of controller design process and follow-up work prospects.The article not only discusses the development process of LED lighting controller based on the USB in detail, but also researchs and analysises from hardware design, software development, USB agreement and firmware driver development. Test results show that the LED controller speeds up to 8 Mbps via USB bus communication in the function of synchronization work mode, has realized the three work methods, synchronization, playback and storage. After repeated tests, the controller has a good reliability and stability. It has an innovation in the technical control.