| The oceans cover71percent of the Earth’s surface, is a basic component of the global life support system, the treasure trove of resources and an important regulator of the environment, as the world economy and technological development and increasing demanding for mineral resources, it has gradually drawn people’s attention turned to the rich marine resources from land. The national12th Five-Year Plan places the marine business on a very important strategic position, to vigorously develop the marine business, to continue to make breakthroughs in the field of marine ecological environment protection and deep-sea exploration, marine economy is becoming a new economic growth point. However, a variety of deep-sea exploration technology by the energy supply constraints, has seriously hampered the development of China’s Marine Progress. Deep-sea exploration and exploitation of marine resources, underwater equipment, energy supply technologies are the most basic one of the most important technology.This thesis focuses on this situation of the deep-sea exploration system energy supply shortage, of the domestic present some deep-sea cable monitoring system analysis, proposed and realized the power energy and multi-channel video signal and data signal on the same cable mixed transmission technology applied to deep sea cable monitoring system.The main contents of this paper is as follows:1. The overall structure of the system design. Analysis of the main deep sea monitoring system of power supply mode and development status at home and abroad, as well as the total power required to consider the deep-sea monitoring system underwater equipment, made clear tasks and functions of the hybrid transmission system needs to be done, develop power energy and multi-channel video mixing transmission system total structure frame diagram.2. Application of electrical network theory and transmission line theory to analyze the transmission medium of the deep-sea monitoring system, the transmission characteristics of coaxial cable, grasp its transmission characteristics,plans to use50Ω base cable.Study the relationship between load voltage and transmission efficiency while on different load power,as well as the advantages of using HVDC, compared a few kinds of remote data transmission of information, and the use of Ethernet digital subscriber line (TDD based Ethernet Digital Subscriber Line, EDSL) transmission system as the data signal transmission mode.3. The data coupler design. Including data coupler principle and structure design of the circuit, selection of magnetic core materials and shapes,normalized filter design methods, the manufacture of the inductor, the main protection circuit design.Finally, Debug the entire system.,including performance testing of the data coupler, and the entire power supply system debug, and the whole system debugging of the power supply system, communication system and device. The experimental results show that, the design of the power energy and multi-channel video mixed transmission system is practical, reliable and stable, greatly improvs the performance of our deep-sea exploration equipment, The system has broad application prospects. |
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