Research On Data Acquisition System And Hover Control Technology Of Argo Buoy

In recent years,there have been frequent occurrences of marine meteorological disasters around the world,and the demand for long-term and short-term predictions of global climate has become more and more urgent.These predictions rely heavily on ocean observation data,especially the global vertical profile of the ocean.A global ocean monitoring system with a higher resolution is essential if you want to make accurate predictions.The Argo buoy is a neutral drifting buoy designed to collect data on the vertical profile of the ocean.It can be floated,dive and hovered by changing its volume.It can be equipped with small ocean observation instruments to measure and store the data of each section in the ocean.When it is on the water,it can send data to the receiving station through satellite communication,and the next measurement cycle can be performed again until the energy is exhausted.First of all,this paper introduces the background significance of this topic and the research status at home and abroad,and introduces the working mode and snorkeling principle of Argo buoy in detail,and briefly introduces its mechanical structure.On this basis,aiming at the basic working mode of Argo buoy,a design of Argo buoy low-power data acquisition system using comet data communication is proposed.The hardware design of this subject includes power circuit design,analog-to-digital conversion circuit design,data storage circuit design,STM32L476 microcontroller circuit design,data acquisition circuit design,etc.,and power management is designed for the buoy driver and the comet digital transmission terminal.Then,according to its working mode,the software development and design was completed,and the dive timeout and battery low-voltage emergency floating function were additionally added,and a handshake protocol was added to the data communication of Iridium.The design implements its human-computer interaction software,which can perform status inquiry,dive mission setting,data download,etc.on the buoy.Secondly,after completing the overall design of the digital mining system,this paper explores the hovering control technology of Argo buoys.Firstly,the snorkeling motion analysis is carried out for the buoy of this subject,and the mathematical model is established.Then,the incremental model is studied.And the application of positional PID control in the hovering control of this subject.On this basis,the fuzzy adaptive PID control algorithm is proposed,and the traditional PID control and fuzzy PID control are simulated by MATLAB,and the simulation results are compared.The results show that the fuzzy PID control performs better in the Argo buoy hover control.Finally,after completing the tests of the system hardware and software,mechanical joint adjustment,etc.,a certain reservoir was selected to test the overall performance of the prototype.The test results show that the data acquisition system meets the needs of the Argo buoy workflow and realizes the hover control function,which fully demonstrates the reliability of the Argo buoy data acquisition system studied in this paper.