Resonance type vector receiver under deep water

Abstract

The invention aims at providing a resonance type vector receiver used under deep water, comprising an inertia unit, a piezoelectric sensitive unit, a pressureproof housing, a seal unit and a cable head, wherein the inertia unit is a cube with ten through holes, the piezoelectric sensitive unit comprises six groups of independent piezoelectric piece piles, each group of independent piezoelectric piece piles is respectively connected with the inertia unit, the seal unit comprises a lateral seal cover and a main seal cover, the seal unit is rigidly connected with the pressureproof housing, the seal unit seals a mechanism which consists of the inertia unit and the piezoelectric sensitive unit in the pressureproof housing, and the cable head is arranged on the main seal cover. The resonance type vector receiver used under deep water can normally work under the water at 3000m, can receive high-quality vector information of an underwater sound field within the frequency range from 20 to 1000or even lower frequency, is higher in anti-jamming capability, and is simple in structure and high in reliability since the watertight housing is integrated with a sensitive component, so that the resonance type vector receiver used under deep water can be widely applied to the field of the deepwater low-frequency acoustic measurement.

Description

technical field [0001] The invention relates to an underwater receiver, in particular to a receiver with neutral buoyancy working in a deep water environment. Background technique [0002] Underwater receivers, commonly called hydrophones, can receive acoustic signals propagating in an underwater sound field. According to the received acoustic signal, it can be divided into sound pressure hydrophone and vector hydrophone. The sound pressure hydrophone can obtain the sound pressure signal transmitted in the underwater sound field; the vector hydrophone can obtain the sound pressure signal transmitted in the underwater sound field. Vector signals, including signals such as particle displacement, acceleration, velocity, and sound pressure gradient. [0003] Vector hydrophones, also known as underwater vector signal receivers in foreign countries, are divided into pressure difference type and co-vibration type according to different working mechanisms. One of the devices. Com...

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Problems solved by technology

[0008] As mentioned above, although foreign countries have accumulated a lot of practical experience in the application of deep-water vector hydrophones, most of the vector hydrophones used in their experiments are differential pressure vector hydrophones, while the co-vibration vector hydrophones As far as earphones are concerned, there is no literature report on working at a depth of 3000m.

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