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Adjustable sound isolation test system and method

A test system and test method technology, applied in the direction of radio wave measurement systems, instruments, etc., can solve the problems of receiving/transmitting isolation test and research inconvenience, and the inability to maximize the beneficial contribution of the baffle, so that the test method is simple and easy Operation, improvement of dynamic testing ability, and strong engineering applicability

Active Publication Date: 2021-05-11
上海船舶电子设备研究所
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AI Technical Summary

Problems solved by technology

[0004] At present, there is no underwater acoustic test system dedicated to sound isolation measurement. Even if the test system is built with the help of existing underwater acoustic measurement equipment, the isolation test can only be carried out for underwater acoustic equipment with a fixed relative installation position, and it cannot be tested during the test process. According to the requirements of the test frequency band, the relative position and distance between the transmitting transducer and the cylinder, the receiving hydrophone and the cylinder or the baffle are adjusted in real time, and it is even more impossible to maximize the impact of the baffle in the working frequency band. Beneficial contribution of isolation
These defects bring a lot of inconvenience to the test and research of the entire system receiving / transmitting isolation

Method used

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  • Adjustable sound isolation test system and method
  • Adjustable sound isolation test system and method
  • Adjustable sound isolation test system and method

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Embodiment approach

[0070]The operation frequency range of the water sound device is 5 kHz-15 kHz, and the transmitting module 1 is composed of a signal generator WF1946B, a power amplifier L2 (including the resistance adapter), the voltage current sampler Vit 13, and the oscilloscope DSOX3104T. The transmitting transducer 2 is used to operate with a single mating ring transducer. The transmit transducer cable does not load, and the transmitting transducer 2 is mounted with a dedicated hanging rope to ensure that the transducer is stable underwater. Coaxially with cylinder 8. When the test is tested, the signal generator WF1946B generates a string single-frequency pulse signal, and the frequency of the pulse signal is 10 kHz, the amplitude is 1Vpp, the pulse width is 4 ms, the pulse period 1S; the emission transducer 2 impedance is about 50Ω, select the power supply adapter The appropriate gear, and is amplified by the power amplifier L2 to load the cable end of the emission transducer 2, the transmitt...

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PUM

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Abstract

The invention provides an adjustable sound isolation test system and method, wherein the adjustable sound isolation test system includes a transmitting subsystem, a receiving subsystem and a cylinder; the transmitting subsystem includes a transmitting transducer, and the receiving subsystem It includes a first hydrophone and a second hydrophone, and a baffle is installed on the cylinder; the transmitting transducer and the first hydrophone are respectively located on both sides of the baffle; the transmitting transducer and the second hydrophone The transducers are located on the same or different sides of the baffle; the transmitting transducer and / or the first hydrophone can be displaced relative to the cylinder. The present invention adds an adjustable receiving and transmitting transducer to the existing underwater acoustic equipment cylinder, which makes up for the defect that the existing underwater acoustic equipment cannot adjust the distance of the transducer in the sound isolation test system.

Description

Technical field[0001]The present invention relates to the field of water sound test systems, and in particular, to an adjustable acoustic isolation test system and method.Background technique[0002]In order to realize the function of edge-collected functions, the water sound device is required to have good acoustic isolation performance, that is, when the transmit transducer transmits high-power broadband signal, the receiving the aqueous hearing is not affected by the transmitted signal, but still can Receive a distant sonar signal. Usually the appearance of the water sound device is a cylindrical cylindrical body, and an electronic device such as a signal transmitter, a receiver, and a signal processing module is loaded inside, and the receiving / shifter is mounted on the cylinder.[0003]In order to meet the performance requirements of the water sound equipment level, the appearance of the general receiving / shifter is designed as cylindrical. The receiving ambient is small, light...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/52
CPCG01S7/52004
Inventor 王敏慧胡健辉刘振君
Owner 上海船舶电子设备研究所
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