Research On Key Technology Of Telemetry Wave System Based On MEMS Sensor

With the continuous development and utilization of the ocean,Marine environmental monitoring has become particularly important,and ocean waves,as the key element of Marine environmental monitoring,are the most important.Among many wave measuring methods,wave measuring buoy is recognized as the most direct and accurate measuring equipment at home and abroad.However,traditional wave buoys generally have the disadvantages of large volume and limited service cycle.In particular,domestic wave buoys lag behind overseas advanced equipment in terms of measurement accuracy,service cycle and manufacturing technology.Therefore,it is of great significance to prepare domestic wave buoys with high measurement accuracy,long service cycle and small volume.Based on the above reasons,this paper focuses on the research of telemetry wave equipment with buoy as the carrier,and designs and develops a telemetry wave system based on MEMS sensor.Based on the measurement accuracy and service cycle of wave measurement,two key technologies of wave signal analysis and processing and low power consumption are put forward in this paper.Combined with the characteristics of MEMS sensor,such as high precision,low power consumption,small size and high reliability,the traditional wave measurement buoy system in China is optimized.In this paper,the measurement principle,system hardware,wave signal analysis and processing and system software are studied.Firstly,the measurement principles of wave height,wave direction and wave period are studied,and Fourier series expansion method is used to analyze wave direction spectrum through comparative analysis.Secondly,the hardware of the system is designed,including the power supply circuit,the main control circuit and the data acquisition and transmission circuit.In the hardware design process,the low-power operation mode of single-chip microcomputer and the power management are used to solve the power consumption problem of the buoy.Finally,the attitude calculation,conversion,filtering,integration and post-processing of the original wave data are carried out to obtain the wave height,wave period,wave direction spectrum and main wave direction analysis,and the system software is written.On the basis of theoretical analysis,algorithm research and hardware and software design,the telemetry wave system based on MEMS sensor is tested in laboratory and compared at sea,and the reliability and accuracy of the system are verified.The experimental results show that the system works stably,the accuracy of wave measurement and the power consumption of the system meet the expected standards.The remote wave measurement system designed in this paper provides theoretical basis and technical support for the research and development of other wave measurement equipment,and promotes the practical application of MEMS sensors in the field of wave measurement.