基于CC430的室内可见光通信系统研究与设计

发布时间：2018-05-10 10:04

本文选题：可见光通信 + 白光LED　；参考：《燕山大学》2014年硕士论文

【摘要】：随着白光LED照明技术的不断发展，它的优点越来越受到人们的关注。白光LED不仅功耗小，寿命长，对环境无害无辐射，而且具有调制性能好，响应灵敏度高，保密性好等优点。利用白光LED的这些特性，用作照明的同时，还可以把信号调制到LED可见光束上进行传输，实现了一种新兴的室内可见光传感器通信网络，这种网络系统可以实现室内智能家电与当前互联网进行信息交流，很适合搭建新一代的智能家居系统。本文首先研究了可见光通信技术的特征，深入分析了室内可见光传感器网络应用在智能家电控制上的可行性。通过硬件软件两方面设计了系统的解决方案。其次，通过研究CC430芯片的特点，设计了硬件系统的扩展模块。最主要是设计了白光LED的信号调制驱动电路与信号解调放大电路，对白光LED的光源特性以及可见光探测器的性能进行深入分析研究，搭建了基于CC430硬件扩展平台的室内可见光通信系统。再次，介于室内可见光传感器节点低功耗的要求考虑，提出了Contiki操作系统移植到CC430硬件系统上实现低功耗网络节点的方案。设计了软件程序流程，编写相关移植程序，最后通过系统测试验证了移植的可行性。最后，在搭建的硬件系统上完成可见光信号的PPM调制解调，详细分析PPM的编码调制格式，提出了利用CC430调制解调可见光信号的解决方案。通过室内可见光通信系统，完成放大电路性能测试，，数据采集，数据传输，数据的误码率测试的实验过程，对实验数据进行讨论研究。
[Abstract]:With the development of white LED lighting technology, people pay more and more attention to its advantages. White LED not only has the advantages of low power consumption, long life, no radiation to the environment, but also has the advantages of good modulation performance, high response sensitivity, good confidentiality and so on. Using these characteristics of white light LED, we can modulate the signal to the visible light beam of LED and transmit the signal at the same time, and realize a new communication network of indoor visible light sensor. This kind of network system can realize the information exchange between the indoor intelligent home appliances and the current Internet, which is very suitable for building a new generation of smart home system. In this paper, the characteristics of visible light communication technology are studied, and the feasibility of indoor visible light sensor network in intelligent home appliance control is analyzed. The solution of the system is designed through two aspects of hardware and software. Secondly, the extended module of hardware system is designed by studying the characteristics of CC430 chip. The main work is to design the signal modulation drive circuit and signal demodulation amplifier circuit of white LED. The characteristics of white light LED and the performance of visible light detector are analyzed. The indoor visible light communication system based on CC430 hardware extension platform is built. Thirdly, considering the low power requirement of indoor visible light sensor node, a scheme of transplanting Contiki operating system to CC430 hardware system to realize low power network node is proposed. The software program flow is designed and the related transplant program is written. Finally, the feasibility of the transplantation is verified by the system test. Finally, the PPM modulation and demodulation of visible light signal is completed on the hardware system. The coding modulation format of PPM is analyzed in detail, and the solution of using CC430 to demodulate visible light signal is put forward. Through the indoor visible light communication system, the experiment process of amplifying circuit performance test, data acquisition, data transmission, data bit error rate test is completed, and the experimental data is discussed.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.1

【参考文献】