Submarine hydrothermal vent high-precision sound wave crossing time measuring system

A time-of-flight, high-precision technology, applied in the field of marine equipment, to achieve the effect of improving accuracy

Inactive Publication Date: 2012-12-05
OCEAN RES CENT OF ZHOUSHAN ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no system in China that can realize high-precision acoustic wave time-of-flight measurement at seabed hydrothermal vents.

Method used

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  • Submarine hydrothermal vent high-precision sound wave crossing time measuring system
  • Submarine hydrothermal vent high-precision sound wave crossing time measuring system
  • Submarine hydrothermal vent high-precision sound wave crossing time measuring system

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specific Embodiment

[0023] The high-precision acoustic wave flight time measurement system of a seabed hydrothermal vent according to the present invention includes an array plane of an underwater acoustic transducer, an acoustic signal generating module, an automatic sound source switching circuit, and a data acquisition system.

[0024] The underwater acoustic transducer array plane is composed of 16 underwater acoustic transducers, which are installed on a square plane (1.5m×15.m) bracket and evenly distributed in the square plane on each side of the stand. 96 sound wave propagation paths can be formed between the underwater acoustic transducers on each side of the bracket and the underwater acoustic transducers on the other three sides of the bracket.

[0025] The sound wave signal generation module mainly emits sound wave signals from the signal generator. The sound wave signals are frequency sweep signals with a sweep frequency range of 18kHz to 23kHz and a sound pressure level of 69dB.

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Abstract

The invention discloses a submarine hydrothermal vent high-precision sound wave crossing time measuring system which comprises an underwater transducer array plane, a sound wave signal generation module, a sound source automatic switching circuit and a data acquisition system, wherein the underwater transducer array plane consists of a plurality of underwater transducers; the sound wave signal generation module mainly utilizes sound wave signals transmitted and set by a signal generator as sound source signals; the sound source automatic switching circuit mainly consists of a singlechip control unit, a decoding module and a driving module; and the data acquisition system comprises a serial port communication unit, a data acquisition and storage unit and a data processing unit. According to the invention, the defects of traditional measurement can be overcome; and when the system disclosed by the invention is used for performing continuous real-time measurement under a severe environment with high temperature, corrosion and multiple suspended particles, the hydrothermal vent heat flux measurement accuracy can be improved.

Description

technical field [0001] The invention belongs to the technical field of marine equipment, and relates to a high-precision acoustic wave flight time measurement system for a seabed hydrothermal vent, which can be applied to the acoustic measurement of the temperature field of a seabed hydrothermal vent. Background technique [0002] The discovery of modern seafloor hydrothermal activities is one of the most important discoveries in marine science today, and the study of seafloor hydrothermal fluids is at the forefront of current scientific research. Submarine hydrothermal activities not only produce rich mineral resources and unique biological gene resources, but also are important factors affecting global heat flux and chemical element cycles. The investigation and research of modern seabed hydrothermal activities is a major mission faced by multiple disciplines such as contemporary marine science, geology, geochemistry, mineral deposits and marine biology, and has become one...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/24G04F10/00
Inventor 蔡勇樊炜金涛付现桥叶敏
Owner OCEAN RES CENT OF ZHOUSHAN ZHEJIANG UNIV
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