Adjustable sound isolation test system and method

Abstract

The invention provides an adjustable sound isolation test system and method. The adjustable sound isolation test system comprises a transmitting subsystem, a receiving subsystem and a cylinder body; the transmitting subsystem comprises a transmitting transducer, and the receiving subsystem comprises a first hydrophone and a second hydrophone, and the cylinder body is provided with a barrier plate;the transmitting transducer and the first hydrophone are located on the two sides of the barrier plate correspondingly; the transmitting transducer and the second hydrophone are located on the same side or the different side of the barrier plate; and the transmitting transducer and / or the first hydrophone can be displaced relative to the cylinder body. According to the adjustable sound isolationtest system and method, an adjustable device for receiving and transmitting transducers is added onto the cylinder body of existing underwater sound equipment, so that the defect that the existing underwater sound equipment cannot adjust the arrangement distance of the transducers in the sound isolation test system is overcome.

Description

technical field [0001] The invention relates to the field of underwater acoustic testing systems, in particular to an adjustable acoustic isolation testing system and method. Background technique [0002] In order to realize the function of transmitting while receiving, the existing underwater acoustic equipment requires that the underwater acoustic equipment has good acoustic isolation performance, that is, when the transmitting transducer transmits a high-power broadband signal, the receiving hydrophone is not affected by the transmitting signal, but still can Receive sonar signals from a distance. Usually, the appearance of underwater acoustic equipment is a cylindrical cylinder, and electronic equipment such as signal transmitters, receivers, and signal processing modules are loaded inside, and the receiving / transmitting transducers are coaxially installed on the cylinder. [0003] In order to meet the horizontal non-directional performance requirements of underwater ac...

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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

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