Research On Seawater Pressure Energy Conversion Technology For Marine Animal Telemetry Tag

With basis on research and accumulated data,the ocean is believed to occupy more than 75% surface area of the earth and contains extremely rich biological and natural resources.Because of this,more and more countries pay close attention to the observation of marine environment;including the observation of temperature,salinity,chlorophyll,oxygen saturation and other ocean parameters.The continuous observation of the ocean is helpful to improving the understanding of the marine ecosystem despite the high degree of change resulting to great uncertainty and thus difficulty in research and data collection.Traditional observation methods such as;scientific research ship,satellite remote sensing technology,seabed observation network and so on have been employed overtime,however,difficulty has been experienced in their application due to the need for special conditions,difficulty or high cost of observation(such as polar sea area in autumn and winter,vortex and upwelling sea area,etc.).Satellite remote sensing technology has been popularly used through the use of telemetry tags which are equipped with various sensors and data transmission equipment to realize quasi real-time observation to collect various ocean parameter.These sensors and communication equipment need power supply to work normally and are thus powered by lithium batteries whose volume is strictly restricted to avoid serious effects to the daily physiological activities of marine animals,if the battery volume were too large.With the current rapid technological development,more requirements are put forward for the telemetry tags,such as carrying more kinds of sensors on the tags to obtain more kinds of oceanographic data;improving the space-time accuracy of observation data by increasing the data acquisition frequency of tags;extending the service life of devices to collect longer observation data,all of which require more power supply thus the need to find a power supply scheme with more power supply and longer power supply time.This paper therefore presents a micro power generation device which takes advantage of the seawater pressure energy produced by the repeated diving of marine animals as the energy source to replace the disposable lithium battery on the telemetry tag,so as to achieve the purpose of continuous power supply for the telemetry tag while attached to marine animals.In order to achieve this objective;Firstly,this paper will introduce the purpose and significance of the research,the status quo of telemetry tag technology at home and abroad,the research status of energy source of the telemetry tag,and compare the research status of seawater pressure energy at home and abroad.Secondly,a micro power generation device based on seawater pressure energy will be proposed,its structure and working principle introduced,and the energy of seawater pressure energy that can be collected by the micro power generation device during the diving process of marine animals analyzed,and the feasibility of the micro power generation device replacing the disposable battery used on the label at present analyzed.Then,the mathematical model of the power generation system will be established as well as the simulation model of the whole generation system based on seawater pressure energy in the MATLAB / Simulink software.The laboratory test platform will be subsequently built to measure and analyze the relevant test data and by comparing the simulation results and test results of the simulation model,the mathematical model and simulation model of the whole generation system based on seawater pressure energy will be verified.Finally,the finite element model of the power generation module of the micro generation device based on seawater pressure energy proposed in this paper will be established by using Ansoft Maxwell software.The magnetic field of the power generation module will be simulated by finite element method,and the parameters such as magnetic Fluxlinkage of the micro generation device based on seawater pressure energy will be obtained.Basing on the verified simulation model,the performance of micro generation device based on seawater pressure energy,such as power generation capacity and power generation efficiency,will be analyzed.