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A fast measurement method and device for broadband transmission response of underwater acoustic emission transducer

A technology of transmitting transducers and measurement methods, applied in the direction of electrical components, etc., can solve the problems of no relevant reports, achieve low sampling rate requirements, improve measurement efficiency, and quickly calibrate the effect

Active Publication Date: 2020-11-03
HARBIN ENG UNIV
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  • A fast measurement method and device for broadband transmission response of underwater acoustic emission transducer
  • A fast measurement method and device for broadband transmission response of underwater acoustic emission transducer
  • A fast measurement method and device for broadband transmission response of underwater acoustic emission transducer

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Embodiment Construction

[0055] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0056] Taking the reverberation water tank of Harbin Engineering University Key Laboratory of Underwater Acoustic Technology as an example, refer to the attached figure 1 The present invention will be described in detail.

[0057] The reverberation water tank is a rectangular water tank with dimensions of 9m in length, 3m in width and 2.0m in height. The cabinet is of steel structure, the water depth is 1.7m, and the measured reverberation time T 60 About 200ms. The density of water ρ is 1000kg / m 3 , water temperature 20°C, sound velocity c 0 It is 1450m / s.

[0058] The signal generator adopts Agilent 33250A signal generator; the power amplifier adopts B&K 2713 power amplifier; the data collector adopts B&K PULSE3560E dynamic signal analyzer.

[0059] (1) Select the reverberation water tank that can be used for testing according to the ope...

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Abstract

The invention discloses a quick measurement method and device of underwater sound transmitting transducer wideband sending response, and belongs to the field of the underwater sound transducer measurement. The method comprises the following steps: placing a to-be-measured underwater sound transmitter transducer in a reverb pool, producing wideband continuous white noise signals by a signal producer, and amplifying and stimulating the underwater sound transmitting transducer to emit a sound signal through a power amplifier, utilizing a standard hydrophone with known sensitivity at a reverb control area of the reverb pool, and measuring the reverb sound field space average sound pressure through the standard hydrophone by adopting a standard hydrophone space scanning motion method, and thencomputing the sending response of the underwater sound transmitting transducer. By adopting the method disclosed by the invention, the wideband measurement of the underwater sound transmitting transducer can be realized, the method has the advantages of being accurate in measurement result, simple in measurement step and high in efficiency; in the same reverb pool, the lower limit frequency measured by adopting method disclosed by the invention is lower than the lower limit frequency of the pulse sound technology.

Description

technical field [0001] The invention belongs to the field of underwater acoustic transducer measurement, and in particular relates to a fast measurement method and device for broadband transmission response of an underwater acoustic emission transducer. Background technique [0002] The transmission response of the hydroacoustic emission transducer is one of the important parameters in the hydroacoustic measurement test. The sending response is divided into sending voltage response and sending current response according to different reference electrical quantities. Generally, the transmission voltage response is used to represent the emission performance of the underwater acoustic emission transducer, which is defined as the difference between the sound pressure at the reference distance from the equivalent acoustic center of the emission transducer in a specified direction and the voltage applied to the input end of the emission transducer Compare. The transmitted voltage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R29/00
CPCH04R29/00
Inventor 尚大晶李琪唐锐孙俊东孙小越王一霖
Owner HARBIN ENG UNIV
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