Planar multi-pole sub-vector receiving array system

A technology of multipole and receiving array, which is applied in the direction of measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problems of unseen small planar multipole vector arrays, etc., and achieve good array processing gain and array gain High, small size effect

Active Publication Date: 2014-07-23
HARBIN ENG UNIV
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Problems solved by technology

So far, there are no literature reports on small planar multipole vector arrays

Method used

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  • Planar multi-pole sub-vector receiving array system
  • Planar multi-pole sub-vector receiving array system
  • Planar multi-pole sub-vector receiving array system

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Embodiment Construction

[0018] The present invention is described in more detail below in conjunction with accompanying drawing:

[0019] It includes 9 vector array elements, cylindrical pressure-resistant array body and upper and lower cover plates, 27 signal amplification and filtering circuit units, 1 set of signal acquisition unit, 1 power supply battery unit and connecting wires. Each of the vector array elements is composed of two independent vibration sensors and a piezoelectric ring, and the two vibration sensors are placed in the center of the piezoelectric ring in a cross-orthogonal shape, and then the two vibration sensors are made of a low-density composite material. Pouted together and covered with a polyurethane shell. 9 vector array elements are arranged in a 3x3 plane formation on the upper cover of the cylindrical array. The acoustic center distance of each array element is 120mm. There are O-ring grooves on the array elements. The upper cover plates are watertight and fixed with bo...

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Abstract

The invention relates to a planar multi-pole sub-vector receiving array system which can work within a low-frequency range of 20-1000 Hz and has high array gain and a small-size narrow beam. The planar multi-pole sub-vector receiving array system comprises nine vector array elements, a cylindrical voltage-resistant array body, an upper covering plate, a lower covering plate, twenty-seven signal amplification filtering circuit unit, a signal collecting unit, a power supply battery unit and a connecting wire, wherein the nine vector array elements are arranged into a 3*3 planar array on the upper covering plate of the cylindrical array body, an O-shaped ring is used for achieving watertightness between the array elements and the upper covering plate of the array body and is fixed through a bolt, the twenty-seven signal amplification filtering circuit unit, the signal collecting unit, the power supply battery unit and the connecting wire are arranged inside the cylindrical array body, and the whole system has no cable output. The planar multi-pole sub-vector receiving array system is small in size, light in weight and convenient to use, can obtain good array processing gain and an ideal wave beam width at a low-frequency stage, and can largely improve the technical level of a hydroacoustic detection system.

Description

technical field [0001] The invention relates to a planar multipole sub-vector receiving array system with high array gain and small-scale narrow beams, which can work in the low frequency range of 20-1000 Hz. Background technique [0002] In the planar multipole vector receiving array system, the receiving array element used to receive the acoustic signal in the underwater sound field is a combined receiver that can simultaneously acquire the sound pressure scalar signal and the particle vibration velocity vector signal propagating in the underwater sound field. - Vector hydrophone. [0003] Compared with the classic sound pressure hydrophone, the vector hydrophone has higher low-frequency sensitivity, more ideal low-frequency cosine pointing characteristics, compact size, and lighter weight (basically neutral buoyancy underwater), Therefore, it has been widely used in various aspects of underwater acoustic engineering. [0004] With the continuous development of vector hy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
Inventor 陈洪娟杨士莪张虎王文芝郭西京朴胜春郭俊媛
Owner HARBIN ENG UNIV
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