The Realization Of Contactless Power And Data Transmission For Buoy

The ocean is closely related to historical of the country, and strongly connected to the survival and development of a nation. Thus, National Marine Interests has particular status and role in the national promotion. And it is crucial to the great rejuvenation of Chinese nation.Ocean Stereo Monitoring is one of the most important ways and means in safeguarding National Marine Interests. As a modern ocean observing facilities, Ocean Stereo Monitoring System should have the ability of stably and reliably collecting Marine Environment Data at anytime and anywhere.Ocean buoy is an important component of Ocean Stereo Monitoring System and plays a key role in collecting Marine Environment Data. In the traditional buoy system, contact data transmission and self-contained electrical energy supply is widely used. However, Contact Method has obvious shortcomings in the marine environment, and self-contained electrical energy supply confines service life and reliability of buoy system. So whether the buoy system has real time power supply and reliable data transmission functions decides success or failure of the Ocean Stereo Monitoring.In this paper, from the reality of buoy system, feasibility and quality of data transmission and electrical energy supply methods is analyzed, and contactless method which based on electromagnetic induction is finally selected to realize power-feeding for underwater machine and communication between overwater machine and underwater machine.LM3S8962 processor which based on the ARMv7-M architecture is selected as the main control chip in the control system. Power and data transmission in the same transmission link is implemented using electromagnetic coupling principle. The thesis makes detailed description about related technologies and theories of contactless power and data transmission which based on electromagnetic coupling principle and model of the system is built. Structural design of the system is accomplished and related design and fabrication of the circuit is researched and optimized in detail.Finally, performances of the trial prototype are tested, including testing of power transmission characteristic, data transmission reliability and performance of the total system. After the test, contactless power and data transmission which is based on electromagnetic coupling principle is suitable for buoy system.