Underwater sound emission and sensor periodic linear array device

Abstract

The invention relates to an underwater acoustic emission and sensor periodic linear array device, which comprises a tube body shell, a main cable bundle, radial polarization piezoelectric ceramic circular tube acoustic emitters, a circumferential polarization piezoelectric ceramic circular tube acoustic emitter, a piezoelectric ceramic underwater acoustic sensor and a vibration reduction tube. The tube body shell is filled with insulating liquid, and the main cable bundle penetrates through the tube body shell along the axis of the tube body shell. According to the underwater sound emission and sensor periodic linear array device, a series of radial polarization piezoelectric ceramic circular tube acoustic emitters and circumferential polarization piezoelectric ceramic circular tube acoustic emitters are used for respectively radiating sound waves with different directions and wave numbers, and the sound waves are used as a steady-state sound source and a transient sound source for underwater structure underwater sound experiments; meanwhile, a piezoelectric ceramic underwater acoustic sensor arranged corresponding to the piezoelectric ceramic circular tube acoustic transmitter can detect sound waves reflected by the underwater object, and the shape and the motion state of the underwater object are judged according to the reflected sound waves, so that the piezoelectric ceramic underwater acoustic sensor is used for detecting the underwater object. The piezoelectric ceramic underwater acoustic sensor linear array can also independently measure the sound pressure at each field point.

Description

technical field [0001] The invention relates to the fields of ships and marine engineering and underwater acoustic engineering, in particular to an underwater acoustic emission and sensor periodic line array device. Background technique [0002] The detection of marine environment, the development of seabed mineral resources, and the interaction between underwater sound and underwater structures require a suitable sound source. Transient underwater sound sources are generally used in the fields of marine object detection, ocean sounding, and deep-sea oil and gas exploration. This kind of high-power sound source has rich spectrum information. Single-frequency steady-state underwater acoustic sources are generally used to study the forward and backward scattering of incident acoustic waves by underwater objects. According to the propagation form of sound waves in the coordinate system, they are divided into plane waves, cylindrical waves, elliptical cylindrical waves, spheric...

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Problems solved by technology

[0004] Based on this, in order to obtain a steady-state sound source with specific axial wavenumbers and circumferential wavenumbers, emit underwater acoustic pulses and detect underwater acoustic signals, and solve the problem of single and inconvenient use of traditional underwater acoustic devices, it is necessary to provide An underwater acoustic emission and sensor periodic line array device that can be used simultaneously for underwater steady-state sound source, sound field measurement and detection of underwater structures

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