Deep-water broadband transducer with ultralow backward radiation

Abstract

The invention relates to a deep-water broadband transducer with ultralow backward radiation. The transducer is composed of a longitudinal bend transducer inner core, a pressure-resistant casing and a pressure-resistant reflection baffle. The longitudinal bend transducer inner core is encapsulated in the pressure-resistant casing, a layer of polyurethane is poured into the upper end of the longitudinal transducer inner core and a layer of rubber is vulcanized on the polyurethane to improve water-tightness. The transducer and the pressure-resistant reflection baffle are in an integration design, a mounting hole is formed on the center of the pressure-resistant reflection baffle and the pressure-resistant casing is fixed in the mounting hole on the pressure-resistant reflection baffle. The deep-water broadband transducer with ultralow backward radiation is characterized by ultralow backward radiation, low frequency, broadband and anti-high hydrostatic pressure, adopts the integration design of transducer and pressure-resistant reflection baffle and is stable in performance and strong in reliability. Moreover the transducer can be mounted conveniently, be used alone or be used in lineup to fulfill the need for sound source level and beam width, covers the commonly used frequency of ocean exploration and the field of communication and has extensive applicable prospect.

Description

technical field [0001] The invention belongs to ocean detection and communication technology, in particular to a deep-water broadband transducer with ultra-low backward radiation. Background technique [0002] In the marine detection system, there is a wide range of requirements for the medium and low frequency bands (near 10kHz), because it has reached a certain balance in the detection distance and detection accuracy; since in practical applications, multiple underwater acoustic devices are often installed on a unified platform, it is required to try to To reduce mutual influence, there are certain requirements for the back radiation of the transducer, and it is hoped to obtain as "clean" beam and lower back radiation as possible. [0003] For a conventional single transducer, even for a longitudinal vibration transducer with low back radiation, its back radiation is about 30% of the maximum sound pressure in the direction of the main beam, which is -10.5dB. Equipment sti...

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Problems solved by technology

[0003] For a conventional single transducer, even for a longitudinal vibration transducer with low back radiation, its back radiation is about 30% of the maximum sound pressure in the direction of the main beam, which is -10.5dB. The equipment still has a large impact

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