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Piling impact noise source level measurement system and method based on shallow sea sound channel response

A technology of impact noise and measurement method, which is used in measurement devices, measurement of ultrasonic/sonic/infrasonic waves, water resource assessment, etc., to achieve the effect of suppressing high measurement errors, accurate acquisition, and improving accuracy

Pending Publication Date: 2022-08-02
THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a piling impact noise source level measurement system based on shallow sea acoustic channel response, which is used to accurately measure the source level of underwater impact noise generated during the piling process of sea-related engineering in shallow sea multi-path environment and the prediction of the range of noise influence

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  • Piling impact noise source level measurement system and method based on shallow sea sound channel response
  • Piling impact noise source level measurement system and method based on shallow sea sound channel response
  • Piling impact noise source level measurement system and method based on shallow sea sound channel response

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Embodiment Construction

[0044] Below in conjunction with the accompanying drawings, the present invention will be further described with respect to specific embodiments:

[0045] like Figure 1-3 As shown, a piling impact noise source level measurement system based on shallow ocean acoustic channel response, the system consists of two parts, a data acquisition and analysis system and an environmental parameter measurement system, wherein,

[0046] The data acquisition and analysis system includes

[0047] The monitoring sensor, which is deployed at multiple points underwater, realizes the whole process recording of the time-varying impact noise of piling, separates the time dependence and space dependence, and the sensitivity fluctuation does not exceed 2dB within the measurement bandwidth; It should have the characteristics of stable performance, strong anti-interference ability, low noise and high sensitivity;

[0048] The signal acquisition module has the characteristics of multi-channel simulta...

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Abstract

The invention discloses a piling impact noise source level measurement system and method based on shallow sea sound channel response, the system is composed of a data acquisition and analysis system and an environmental parameter measurement system, the data acquisition and analysis system comprises a monitoring sensor; the signal acquisition module can realize multi-channel simultaneous acquisition; and the processing and analyzing module is used for carrying out data recording, processing and analyzing on a measurement result of the signal acquisition module and providing field data interactive display. According to the invention, multiple sensors are used for vertical sound field measurement, and an energy averaging method is combined, so that high measurement errors caused by fluctuation of a shallow sea sound field can be well inhibited. Meanwhile, by utilizing the characteristic that the energy in the noise frequency band is relatively stable, the noise source level is obtained by using the 1 / 3 octave frequency band sound pressure level calculated by taking the analysis frequency as the center frequency, the noise analysis precision is improved, and the calculation method is simple and convenient to implement.

Description

Technical field: [0001] The invention relates to the field of underwater acoustic measurement, in particular to a piling impact noise source level measurement system and method based on a shallow ocean acoustic channel response. Background technique: [0002] With the development and utilization of marine resources and the rapid development of marine economy, the number of domestic marine projects is increasing. According to statistics, the number of marine projects such as reclamation, marine dams, cross-sea bridges, port construction, offshore wind power, submarine pipelines, and marine mineral resources exploration and development in China is rapidly increasing by more than 400 every year. These sea-related projects are generated during the construction process. The high-energy impact piling underwater noise pollution will have a greater impact on the marine environment and marine life, and an effective measurement method must be established to evaluate the impact of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00G01D21/02
CPCG01H17/00G01D21/02Y02A90/30
Inventor 刘玉财易文胜陈毅冯志维梁丽辉卢普悦
Owner THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
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