Скачать или смотреть Underwater Optical Communication System - UURAF 2013

Bin Tian presented his research on April 12, 2013 at the University Undergraduates Research and Arts Forum.

Category: Engineering, Computer Science and Mathematics

Mentor: Xiaobo Tan (Electrical and Computer Engineering)

Abstract: Mobile networking and collaboration of underwater robots is one of the hot topics in many fields including aquatic environment sensing and robot networked control. In this paper, a LED‐based optical underwater communication system is proposed for such applications. Compared with those acoustics‐related and laser‐based communication systems, the characteristics of small size and low cost of LED‐based systems are quite outstanding, especially for small underwater robots networking. Compared to other existing LED‐based communication systems, the presented system has a better balance on features of small size (in the order of centimeters), low energy consumption (500mW on average) and long communication distance (20‐30m, in comparison of several meters from most of similar LED‐based systems). System design is presented including the realization of the transmitter and the receiver, as well as the methods for robustness to noise. System performance is experimentally tested in terms of signal strength and waveform shape versus communication distance and transmitting frequency. Experiments of real data transmission is conducted to check the bit error rate under different baud rates. The experimental results show that the presented system has a good balance between communication performance and robustness.