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Packaging structure for vector hydrophone

A vector hydrophone and encapsulation structure technology, which is applied to transducers used underwater, can solve problems such as affecting the propagation of acoustic signals, affecting the detection results of three-dimensional vector hydrophones, affecting detection sensitivity, etc., and achieves low processing costs. , Simple structure, reasonable structure effect

Inactive Publication Date: 2011-04-06
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, with the emergence of three-dimensional vector hydrophones, whether the packaging structure is reasonable or not directly affects the propagation of acoustic signals, which will inevitably affect the detection sensitivity of three-dimensional sensitive bodies in the packaging structure to acoustic signals in various directions, and then affect the detection sensitivity of three-dimensional vector hydrophones. Final test result

Method used

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  • Packaging structure for vector hydrophone
  • Packaging structure for vector hydrophone
  • Packaging structure for vector hydrophone

Examples

Experimental program
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Embodiment Construction

[0013] As shown in the accompanying drawings, the packaging structure for the vector hydrophone includes two hemispherical sound-permeable rubber caps 1 and 2, and is used to fix the two hemispherical sound-permeable rubber caps 1 and 2 to form a ring-shaped installation of a spherical shell. Seat 3; the upper and lower end surfaces of the ring-shaped mounting seat 3 are respectively provided with slots 4 for fastening the brims of the hemispherical sound-permeable rubber caps 1 and 2, and the brim and the slots 4 are bonded with polyurethane; the ring-shaped mounting seat 3. An annular mounting plate 5 is arranged along its inner wall. The annular mounting plate 5 is fixed with a PCB circuit board 6 for installing the sensitive body 12 of the vector hydrophone through bolts or screws. The center of the PCB circuit board 6 is provided with a The mounting groove 7 of the sensor sensitive body 12, and the middle part of the mounting groove 7 is a through-hole structure, and the P...

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Abstract

The invention relates to a vector hydrophone in the field of an MEMS (Micro Electro Mechanical System) sensor, in particular to a packaging structure for a vector hydrophone. The impacts of the packaging structure on a detection result are reduced. The packaging structure comprises two hemispherical perforated rubber caps and an annular mounting seat, wherein the upper end surface and the lower end surface of the annular mounting seat are respectively provided with a card slot, and brims and the card slots are glued by polyurethane; an annular mounting board is arranged in the annular mounting seat, and a PCB circuit board is fixed on the annular mounting board; the center of the PCB circuit board is provided with a mounting slot the middle part of which is in a through hole structure, and the PCB circuit board is integrated with a signal extracting and conditioning circuit; and a hemispherical shell body is filled with insulating liquid the density of which is same or similar with the density of water. The annular mounting seat is provided with two functional through holes, namely an injection hole and a mounting hole. The injection hole is used for pouring the insulating liquid into the hemispherical shell body, and the mounting hole is used for mounting an output cable which is connected with the output of the signal extracting and conditioning circuit on the PCB circuit board. The packaging structure has the advantages of simple and reasonable structure, novelty and low processing cost, is easy for manufacturing and is suitable for mass production.

Description

technical field [0001] The invention relates to a vector hydrophone in the field of MEMS sensors, in particular to a packaging structure for a vector hydrophone. Background technique [0002] At present, the application of vector hydrophones in the field of MEMS sensors has greatly improved the acquisition of underwater sonar information, from the original only scalar information (sound pressure) to the simultaneous acquisition of scalar information (sound pressure), and The vector information of the sound field (particle vibration velocity, acceleration, etc.) is extremely beneficial to the processing of sonar signals. The application effect of the vector hydrophone is closely related to many factors, among which the packaging structure is an important factor affecting the application effect of the vector hydrophone. In particular, with the emergence of three-dimensional vector hydrophones, whether the packaging structure is reasonable or not directly affects the propagati...

Claims

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Application Information

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IPC IPC(8): H04R1/44
Inventor 熊继军张国军薛晨阳关凌纲张文栋王晓瑶许娇
Owner ZHONGBEI UNIV
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