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Hydrophone phase conformance testing device

A test device and hydrophone technology, applied in the field of sensors, can solve problems such as high cost and large water area, and achieve the effect of reducing volume and cost

Inactive Publication Date: 2010-06-30
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In view of this, the main purpose of the present invention is to provide a hydrophone phase consistency test device, to solve the problem of requiring large water area and high cost in the existing hydrophone phase consistency test

Method used

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0029] Please refer to figure 1 , the hydrophone phase consistency testing device includes: a vibrating table 20 installed on the foundation 10 for generating vibration signals; a liquid column cylinder 30 installed above the vibrating table 20 as a container for testing; installed on the foundation 10 The hydrophone fixture 40 is used to clamp the hydrophone to be tested; the standard hydrophone 50 installed on the hydrophone fixture is used to provide reference signals; the signal source 80 is used to provide signals and A reference signal is provided to the standard phase meter 70; and the standard phase meter 70 is used to measure the phase difference.

[0030] The center of gravity of the liquid column cylinder 30 c...

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Abstract

The invention discloses a hydrophone phase conformance testing device which comprises a shaking table (20) used for generating vibration signals and arranged on a base (10) ; a liquid column cylinder (30), used as a testing container and arranged on the top of the vibration table (20); a hydrophone clapper (40) arranged on the base (10) for clamping the hydrophone under test; a standard hydrophone (50) arranged on the hydrophone clapper for providing reference signals to measure; a signal source (80) for providing signals for the vibration table (20) and reference signals for a standard phase meter (70); and a standard phase meter (70) used to measure the difference between two input phase signals. The invention can build a sound field through the vibration table (20) and the liquid column cylinder (30) to test the phase coherence of the hydrophone, reducing size and cost of the test system.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a hydrophone phase consistency testing device. Background technique [0002] A hydrophone is an instrument that detects signals such as pressure and sound in a liquid by using the characteristics of the material and various modulation effects generated by its interaction with the surrounding environment. In the civilian field, hydrophones can be used for oil exploration, marine biological monitoring, and seabed inspections by detecting underwater acoustic signals. In the military field, as the front end of the sonar system, the hydrophone is responsible for detecting enemy target signals. [0003] As an important piece of equipment, hydrophones must ensure good performance. Therefore, its performance must be tested during the production and use of hydrophones. The phase consistency of the hydrophone is an important measured index. [0004] The phase consistency of hydrophones...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
Inventor 张文涛王延李学成李芳刘育梁
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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