Device for testing high hydrostatic pressure and acoustic pressure sensitivity of hydrophone

Abstract

The invention discloses a device for testing high hydrostatic pressure and acoustic pressure sensitivity of a hydrophone, comprising a vibration exciter, liquid column cylinder, a sheet, a sealing cover, a base, a standard hydrophone, a pressure gauge, a high-pressure valve and at least one hole. The vibration exciter is used for generating vibration signals; the liquid column cylinder is used as a container for testing; the sheet is arranged at the bottom of the liquid column cylinder and used for converting the vibration signals into acoustic pressure signals in liquid; the sealing cover is arranged at the top of the liquid column cylinder and used for forming a sealed container together with the liquid column cylinder and the sheet; the base is arranged below the liquid column cylinder and used for restricting the vibration direction of the vibration exciter and supporting the sheet to prevent the sheet from deforming greatly under the high hydrostatic pressure; the standard hydrophone is used for measuring the acoustic pressure; the pressure gauge is arranged on the liquid column cylinder and used for measuring the hydrostatic pressure; the high-pressure valve is arranged on the liquid column cylinder, and liquid can be injected into the liquid column cylinder through the high-pressure valve; the at least one hole is arranged on the sealing cover and used for leading out the connection line of the hydrophone and a hydrophone to be tested. The invention solves the problem that the traditional method can not be used to test the high hydrostatic pressure sensitivity.

Description

technical field [0001] The invention relates to the field of sensor technology, in particular to a hydrophone sound pressure sensitivity measurement device. Background technique [0002] A hydrophone is a transducer that converts underwater acoustic signals into electrical signals. Sound waves are the only form of energy known to humans that can travel long distances underwater. Therefore, as the main equipment for underwater acoustic signal detection, hydrophones play an important role in underwater resource exploration, target detection, etc. effect. [0003] When detecting underwater acoustic signals, due to the special underwater working environment, the hydrophone often needs to withstand the hydrostatic pressure of several megapascals or even tens of megapascals. The presence of hydrostatic pressure can affect key characteristics of hydrophones such as sound pressure sensitivity. Therefore, as an important underwater equipment, especially when used in deep water, th...

AI Technical Summary

Problems solved by technology

[0007] In view of this, the main purpose of the present invention is to provide a hydrophone high hydrostatic pressure sound pressure sensitivity test device, solve the problem that traditional testing methods cannot carry out high hydrostatic pressure sensitivity test, and realize low cost, easy to assemble test device

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