Abstract:

As changes in polar ice and oceans play an important role in global climate change, polar ice-ocean interactions are becoming an increasingly important part of global climate research. In oceanography research, the basic environmental parameters that describe the most fundamental properties of each ocean and are important analytical indicators for other basic oceanographic studies are temperature, salinity, ocean currents, and sea ice growth and melting. In response to the observation requirements surrounding key environmental parameters of the ice-ocean environment, this study evaluated a newly designed ice-resistant type of ice-ocean dual-purpose autonomous drifting buoy. The buoy had a cylindrical body, an inner core made of ethylene-vinyl acetate copolymer, and a 3-mm-thick RX-802 unsaturated polyester resin coating added to the surface. The cabin was made of 6061-T6 aviation aluminum alloy and was galvanized with cathodic protection to ensure the safety of the control system. The stability and ice resistance of the buoy were calculated by numerical analysis methods, and the wind resistance, ocean current impact resistance, and ice resistance simulation experiments were carried out on the buoy through ANSYS. The experimental results showed that the buoy had good structural characteristics. The dual-master-control redundancy design strategy was adopted to prevent sensor short circuits from causing overall system failure, and the software followed a low-power power management strategy to meet the task requirements of long-term monitoring of the buoy. The buoy completed on-site experiments during China’s 39th Antarctic Research Expedition and successfully obtained data on shallow seawater temperature, chlorophyll concentration, and turbidity to support China’s ice-sea environmental research.

Key words: polar, ice resistant type, numerical analysis, dual-master-control redundancy, low-power