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Acoustic Doppler current meter

A Doppler current and acoustic technology, applied in the field of ocean observation, can solve problems such as inflexible working methods

Inactive Publication Date: 2016-07-20
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing acoustic Doppler current meters generally only have a working mode of direct reading or self-contained, and the working mode is not flexible enough

Method used

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Embodiment 1

[0021] An acoustic Doppler current meter, an acoustic Doppler current meter, comprising a transducer 1, a system control module 8, a measurement processing module, a pressure sensor 12, an attitude sensor 8, a temperature sensor 15, and a power conversion module 6 , an alkaline battery pack 9 and a casing; the casing includes an upper end cover 2, a cylinder body 3, a lower end cover 11, and a circuit board support 13, and the upper end cover and the cylinder body, the lower end cover and the cylinder body all adopt shafts at the same time Directional sealing method and longitudinal sealing method, adopting two kinds of sealing methods at the same time, has better sealing performance; the upper end cover 2, the cylinder body 3, and the lower end cover 11 are all made of 316 stainless steel, and the circuit board bracket 13 is made of metal aluminum material Production, can reduce the weight of the instrument; there is also a metal shielding plate 5.

[0022] There are 4 transd...

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PUM

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Abstract

The invention relates to the technical field of ocean observation, in particular to an acoustic Doppler current meter which comprises a transducer, a measurement treatment module, a system control module, a pressure sensor, an attitude sensor, a temperature sensor, a power supply converting module, an alkaline battery pack and a shell. Based on the Doppler frequency shift principle, the acoustic Doppler current meter aims to resolve current velocities and flow directions by measuring the frequency shift variation of transmission pulse and echo pulse with the combination of instrument attitude data, ambient temperature and pressure data. The acoustic Doppler current meter provided by the invention is placed in a subsurface buoy system, is capable of observing ocean dynamic environment parameters and ocean current data for a long time and acquiring ocean environment parameters such as the temperature, the pressure, the current velocity and the flow direction of a placing sea area, has two working modes of direct reading and self-containing, and also has the characteristics of high current metering precision and flexible operation.

Description

technical field [0001] The invention relates to the technical field of ocean observation, in particular to an acoustic Doppler current meter. Background technique [0002] Ocean currents are important parameter data for the study of marine dynamic environments, and play an important role in the development of marine resources, environmental information security, and scientific research. Existing instruments based on acoustic current measurement are divided into acoustic current meters and Doppler profilers. Acoustic current meters are divided into transit-time acoustic current meters, focused acoustic current meters, and Doppler-type acoustic current meters according to different measurement principles. Advantages of measuring low speed ocean currents. The current meter can only conduct long-term continuous observation of the ocean current at a certain point in the ocean. The acoustic Doppler current profiler adopts an oblique orthogonal array (JANUS) structure, and uses s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C13/00G01D21/02G01P5/24
CPCG01C13/002G01D21/02G01P5/244
Inventor 周丽芹李国栋葛安亮王向东
Owner OCEAN UNIV OF CHINA
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