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Design of the Main Control Unit of Marine Hydrologic Profile Measuring Buoy Based on Wireless Communication

In order to solve the problem that the existing XBT/XCTD probe is susceptible to the sea surface meteorologic and hydrologic environment during the measurement process, and the contact between the enamelled wire and the hull under the interaction of wind and current leads to the abnormal data, this paper proposes the design idea of the main control unit of the hydrographic profile element measurement buoy based on wireless communication. The buoy can hold a XBT or XCTD. Under the control of the main control unit, the buoy can release probe, data acquisition and coding, and then transmit the measurement results to the shipboard receiver in wireless communication by using the data transmission radio. The data processing software can obtain and display the measurement results in real time. After the hardware scheme is put forward, the software flow of the system is designed. At the same time, the mechanism analysis of hardware and communication problems is carried out. The optimized test results show that: The buoy can release the XBT/XCTD under the control of main control unit, hydrologic profile measurement data can be transmitted to the main control unit, the real-time data can be received by shipboard receiver. The buoy has characteristics of high launching success rate and good practicability, providing technical basis for measuring Marine hydrologic parameters in different sea condition, and has important application value.