Oil sac type Argo buoy buoyancy precise control method and experiment equipment thereof

Abstract

The invention relates to the field of marine monitoring equipment, in particular to an oil sac type Argo buoy buoyancy precise control method. The oil sac type Argo buoy buoyancy precise control method comprises the steps of S1, establishing a profile model rho <dep> (h) of sea water density in relation to depth by using high-order polynomial fitting according to data information of a tested sea area; S2, obtaining sea water density corresponding to different sea water depths by using the established profile model rho <dep> (h) of the sea water density in relation to the depth, and using a pressure integral formula (please see the description for the formula) to obtain corresponding depth pressure; and S3, determining depths of all buoyancy adjusting points according to the profile model rho <dep> (h) of the sea water density in relation to the depth and an established kinematical equation. The oil sac type Argo buoy buoyancy precise control method and experiment equipment thereof establish the profile model of the sea water density in relation to the depth according to the historical data information of the tested sea area, output corresponding density according to an input depth,use the pressure integral formula to obtain the corresponding pressure, in the process of actual observation of a buoy, a corrected model performs testing on the buoy, a hydraulic pump control algorithm is proposed, and the buoy can be controlled to keep constant speed in the process of diving and floating.

Description

technical field [0001] The invention relates to the field of marine monitoring equipment, in particular to a method for accurately controlling the buoyancy of an oil bladder type Argo buoy and an experimental device thereof. Background technique [0002] Argo buoy is an autonomous underwater observation platform widely used for deep sea information collection. It is driven by net buoyancy, and the periodic conversion of positive and negative net buoyancy is realized through the buoyancy adjustment mechanism, so as to realize the independent sinking and floating of the buoy, drifting with the ocean current while moving up and down, and can carry a variety of sensors for ocean observation Collect marine environmental parameters, and can transmit data and receive commands through the satellite system on the sea. [0003] At present, most of the buoyancy adjustment mechanisms of Argo buoys belong to the oil hydraulic system. By keeping the gravity of the buoy unchanged and chan...

AI Technical Summary

Problems solved by technology

Due to the temperature, salinity, density of the seawater and the volume of the buoy’s pressure-resistant shell are constantly changing with the depth of the seawater, the buoyancy on the buoy is constantly changing, and the change of buoyancy is reflected on the vertical movement of the buoy, resulting in abnormal Regular variable speed movement, the vertical movement of the buoy is very unstable, which has great limitations on the data collection of the buoy, which will cause the sensors on the buoy to be unable to effectively capture ocean phenomena, and easily lead to loss of important data

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