Dragging vertical stable flow velocity profile measuring buoy for wave glider

Abstract

The invention discloses a dragging vertical stable flow velocity profile measuring buoy for a wave glider. The dragging vertical stable flow velocity profile measuring buoy comprises a long round floating body, a cylindrical battery sealing chamber and an ADCP which are coaxially and vertically arranged from top to bottom. The top of the floating body is provided with an electrical sealing chamber, a data acquisition module, a GPS positioning module, a satellite communication module and a control module are installed in the electrical sealing chamber, a battery pack is installed in the batterysealing chamber, the bottom of the floating body is provided with a floating body bracket, the ADCP is connected to the lower end of the battery sealing chamber, the ADCP is connected to the data acquisition module and the control module, the data acquisition module receives the data of the ADCP and the GPS positioning module, and wireless communication is performed with a shore-based monitoringcenter through the satellite communication module to realize data transmission. The dragging vertical stable flow velocity profile measuring buoy has the advantages of high vertical stability and small horizontal resistance, the function of a floating buoy on a sea surface can be achieved, the dragging vertical stable flow velocity profile measuring buoy is suitable for dragging, and the real-timeremote communication of measurement data can be realized.

Description

technical field [0001] The invention relates to a key technology for observing the air-sea interface, in particular to a buoy for measuring a vertically stable current velocity profile towed by a wave glider. Background technique [0002] In the observation of the air-sea interface, the velocity profile information of the upper ocean water body is an important measurement content. Feasible and efficient acquisition of high-precision velocity profile information of the upper ocean water body is of great significance to the study of ocean dynamic processes. The traditional float moves with the waves on the surface of the ocean, and the statistical average velocity of the ocean surface is calculated by the distance between the GPS positioning coordinate points and the positioning time interval. There are three defects in the traditional float current measurement: 1) Due to the influence of the sea surface wind speed, the statistical average velocity of the sea surface There are...

AI Technical Summary

Problems solved by technology

The traditional float moves with the waves on the surface of the ocean, and the statistical average velocity of the ocean surface is calculated by the distance between the GPS positioning coordinate points and the positioning time interval. There are three defects in the traditional float current measurement: 1) Due to the influence of the sea surface wind speed, the statistical average velocity of the sea surface There are errors in the measurement; 2) The traditional floats move with the waves, and often drift to the distance with the ocean circulation and cannot be recovered, causing marine pollution and waste of resources. If wave glider or unmanned boats are used for traction, the floats will lose the statistics of ocean surface measurements. The basic conditions of the average velocity; 3) The traditional float can only realize the statistical average velocity measurement of the sea surface, and cannot realize the instantaneous sea surface velocity measurement, let alone the instantaneous velocity information measurement of the hundreds of meters section of the upper ocean

Installing an ADCP (Acoustic Doppler Velocity Profiler) on the bottom of a scientific research ship or an unmanned ship for flow profile measurement will consume a lot of manpower and material resources. Traditional unmanned ships have a short battery life and are not suitable for long-term low-speed movement.

It is not ideal to use the wave glider to carry ADCP to measure the current velocity profile information, because the hull of the wave glider changes greatly in pitch and roll attitude under the action of waves, which cannot meet the requirement of ADCP that the attitude tilt angle is less than ±15 degrees.

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