CN102607694A - Packaging structure for T-shaped sensitive body vector hydrophone - Google Patents
Packaging structure for T-shaped sensitive body vector hydrophone Download PDFInfo
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- CN102607694A CN102607694A CN2011104078285A CN201110407828A CN102607694A CN 102607694 A CN102607694 A CN 102607694A CN 2011104078285 A CN2011104078285 A CN 2011104078285A CN 201110407828 A CN201110407828 A CN 201110407828A CN 102607694 A CN102607694 A CN 102607694A
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Abstract
The invention discloses a packaging structure for a T-shaped sensitive body vector hydrophone. Through adoption of the packaging structure, various performance indexes of the T-shaped sensitive body vector hydrophone can be further improved and perfected. The packaging structure comprises a supporting tube for mounting a signal extraction circuit board, wherein a reducing thin tube is arranged at the top of the supporting tube; a supporting disk is arranged at the top of the reducing thin tube; a central through hole communicated with the reducing thin tube is formed on the supporting disk; rectangular clamping slots for clamping and fixing a T-shaped sensitive body and a printed circuit board (PCB) are symmetrically arranged on two sides of the central through hole; an acoustical transmission cap full of silicon oil is fixedly connected to the supporting disk; a metal plug with a cable through hole is inserted in a tube opening at the bottom of the supporting tube; an output cable is inserted into the cable through ole; and the cable lead-out end of the metal plug is encapsulated with a polyurethane layer. Through adoption of the packaging structure, the influence of acoustic scattering on acoustic detection can be reduced effectively, so that the sensitivity and the directivity of the T-shaped sensitive body vector hydrophone are improved; and the packaging structure is rational in design, easy to microminiaturize and high in sealing property.
Description
Technical field
The present invention relates to a kind of MEMS vector hydrophone, particularly a kind of T shape sensitive body vector hydrophone is specially a kind of encapsulating structure of the T of being used for shape sensitive body vector hydrophone.
Background technology
Vector hydrophone not only can record the scalar information in the sound field; The Vector Message of measurement sound field same point particle that can also be direct, synchronous; In noise field, have the advantage that isotropic noise is offset, therefore can extremely carry out the target detection location in the rugged environment.Yet the encapsulating structure of performances such as the stability of the sensitivity of vector hydrophone, directive property, work and nautical receiving set is closely related, and the quality of nautical receiving set encapsulating structure also can directly influence the testing result of nautical receiving set.Therefore, a kind of good encapsulating structure has fundamental influence for the various performances of vector hydrophone.
Number of patent application is that 200910261830.9 Chinese invention patent application discloses a kind of " the T shape sensitive body of vector hydrophone "; The vector hydrophone volume that adopts this T shape sensitive body to process is little, low in energy consumption, highly sensitive, detection range is far away; And has good figure of eight directive property; Particularly on vector detection and high sensitivity, have absolute advantage, the general nautical receiving set of each performance index is even better.Therefore, the encapsulating structure that whether can develop a kind of T of being suitable for shape sensitive body vector hydrophone further improves and improve its performance with this, just seems very necessary.
Summary of the invention
The present invention is in order further to improve and improve the various performance index of vector hydrophone through encapsulating structure; Based on number of patent application is 200910261830.9 Chinese invention patent " the T shape sensitive body of vector hydrophone ", and a kind of encapsulating structure of the T of being used for shape sensitive body vector hydrophone is provided.
The present invention realizes through following technical scheme:
A kind of encapsulating structure that is used for T shape sensitive body vector hydrophone; Comprise the stay pipe that is used to settle the signal extracting circuit plate; The top of stay pipe extends the undergauge tubule of built-in lead-in wire; Undergauge tubule top is provided with supporting disk and supporting disk and is centrosymmetric with the axis of undergauge tubule; Offer on the supporting disk and communicate with the undergauge tubule and central through hole that size is identical with undergauge tubule diameter, the symmetria bilateralis of central through hole offers the rectangle draw-in groove that an end communicates with central through hole and is used to fix T shape sensitive body and PCB circuit board; Submarginal position is provided with annular slot on the supporting disk; Be connected with the entrant sound cap in the annular slot; Position between annular slot on the supporting disk and central through hole offers the oiling threaded hole that runs through supporting disk; Be marked with density and the approaching silicone oil of water through the oiling threaded hole in the entrant sound cap, twist in the oiling threaded hole and be connected to sealing screw; The bottom mouth of pipe of stay pipe is plugged with the metal plug, offers cable through-hole on the metal plug, is plugged with output cable in the cable through-hole, and the cable exit embedding of metal plug has layer of polyurethane.
Wherein, described T shape sensitive body vector hydrophone is meant and adopts existing known technology---number of patent application is the vector hydrophone that the T shape sensitive body in 200910261830.9 the Chinese invention patent " the T shape sensitive body of vector hydrophone " is made.
In the encapsulating structure of the present invention; Stay pipe, undergauge tubule and the integrated setting of supporting disk; The sealing that can strengthen this encapsulating structure is set like this, more helps protecting packed microstructures such as T shape sensitive body, PCB circuit board and signal extracting circuit plate, and also can realize integrated connection through lead-in wire between the T shape sensitive body, PCB circuit board, signal extracting circuit plate; Come to reduce as much as possible the influence of extraneous factor to nautical receiving set sensitivity, the accuracy that improves its testing result with this.Undergauge tubule between stay pipe and the supporting disk is elongated undergauge setting, can effectively reduce the influence of acoustic scattering to acoustic detection like this, thereby can improve the sensitivity and the directive property of T shape sensitive body vector hydrophone.The supporting disk of being located at undergauge tubule top is centrosymmetric with the axis of undergauge tubule; So just realized that whole encapsulating structure is all for being symmetrical set; Thereby guaranteed that as far as possible the geometric center of T shape sensitive body vector hydrophone and barycenter realization overlap; Again T shape sensitive body, PCB circuit board, signal extracting circuit plate are located at the center of whole encapsulating structure; Like this could the distortionless vibration information that obtains the sound field particle, make sensing unit such as T shape sensitive body realize with shaking that with surrounding medium finally the vibration velocity information through sensing units such as measurement T shape sensitive body realizes the location to underwater signal.The layer of polyurethane of metal plug cable exit embedding can further strengthen the sealing of T shape sensitive body vector hydrophone, and the internal microstructure of protection nautical receiving set is to prolong the serviceable life of nautical receiving set.The entrant sound cap is to adopt the polyurethane potting material of the low infiltration of the low decay of high frequency to be made through the acoustics dosing technology; Polyurethane potting material has good entrant sound property; Can guarantee that sound wave can import on the microstructure sensitive body in the nautical receiving set to greatest extent, the acoustics dosing technology is a kind of existing known technology.
Further; On the outer tube wall of described stay pipe bottom through the set nut that has been threaded; The metal plug is provided with between the collar and the mouth of pipe and set nut of the compacted fixing of collar bottom stay pipe of evagination, also is provided with O-ring seal between part in the metal plug inserts stay pipe and the stay pipe.Set nut can make tightr that the metal plug of the stay pipe bottom mouth of pipe pegs graft, and the safety that guarantees inner each structure of nautical receiving set is with stable; O-ring seal can strengthen the sealing between stay pipe and the metal plug.
Compared with prior art; Encapsulating structure of the present invention has adopted by stay pipe, undergauge tubule and the setting of supporting disk core structure; This encapsulating structure under the prerequisite that does not influence the acoustic propagation quality, has withstand voltage, corrosion resistant characteristic on the one hand, can well protect each inner microstructure of vector hydrophone; On the other hand, this encapsulating structure can also reduce the influence of acoustic scattering to acoustic detection, improves the sensitivity and the directive property of vector hydrophone.In addition, that encapsulating structure of the present invention also has is simple and reasonable, be easy to advantages such as miniature, withstand voltage corrosion resistant, good airproof performance, has reached further raising and has improved the purpose of vector hydrophone performance index.
Description of drawings
Fig. 1 is the synoptic diagram of encapsulating structure of the present invention.
Fig. 2 is the grafting synoptic diagram of stay pipe in the encapsulating structure of the present invention and metal plug.
Fig. 3 is the vertical view of supporting disk in the encapsulating structure of the present invention.
Fig. 4 is the frequency response curve of the T shape sensitive body vector hydrophone of application encapsulating structure of the present invention.
Fig. 5 is the directive property (1KHz) of the T shape sensitive body vector hydrophone of application encapsulating structure of the present invention.
Among the figure: 1-stay pipe, 2-supporting disk, 3-undergauge tubule, 4-central through hole, 5-T shape sensitive body, 6-PCB circuit board, 7-annular slot, 8-entrant sound cap, 9-signal extracting circuit plate, 10-rectangle draw-in groove, 11-lead-in wire, 12-metal plug, 13-cable through-hole, 14-output cable, 15-layer of polyurethane, 16-set nut, 17-collar, 18-O-ring seal, 19-oiling threaded hole, 20-silicone oil, 21-sealing screw.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described:
Extremely shown in Figure 3 like Fig. 1; A kind of encapsulating structure that is used for T shape sensitive body vector hydrophone; Comprise the stay pipe 1 that is used to settle signal extracting circuit plate 9; The top of stay pipe 1 extends the undergauge tubule 3 of built-in lead-in wire 11; Undergauge tubule 3 tops are connected with supporting disk 2 and supporting disk 2 and are centrosymmetric with the axis of undergauge tubule 3, offer on the supporting disk 2 to communicate with undergauge tubule 3 and central through hole 4 that size is identical with undergauge tubule 3 diameters, and the symmetria bilateralis of central through hole 4 offers the rectangle draw-in groove 10 that an end communicates with central through hole 4 and is used for clamping T shape sensitive body 5 and PCB circuit board 6; Submarginal position is provided with annular slot 7 on the supporting disk 2; Be connected with entrant sound cap 8 in the annular slot 7; Position between annular slot 7 on the supporting disk 2 and central through hole 4 offers the oiling threaded hole 19 that runs through supporting disk 2; Be marked with density and the approaching silicone oil 20 of water through oiling threaded hole 19 in the entrant sound cap 8, twist in the oiling threaded hole 19 and be connected to sealing screw 21; The bottom mouth of pipe of stay pipe 1 is plugged with metal plug 12, offers cable through-hole 13 on the metal plug 12, is plugged with output cable 14 in the cable through-hole 13, and the cable exit embedding of metal plug 12 has layer of polyurethane 15.
In the specific implementation; For the metal plug that makes the stay pipe 1 bottom mouth of pipe 12 peg graft tightr; Can be through the set nut 16 that is threaded on stay pipe 1 bottom outer tube wall; On metal plug 12, establish the collar 17 of an evagination then, and collar 17 is compressed fixing between the mouth of pipe and set nut 16 of stay pipe 1 bottom.In addition, can also establish two circle O-ring seals 18 between part in metal plug 12 insertion stay pipes 1 and the stay pipe 1, further strengthen its sealing with this.
Utilize calibrating installation to the T shape sensitive body vector hydrophone that adopts encapsulating structure according to the invention is tested; Through experimental verification utilize the T shape sensitive body vector hydrophone of encapsulating structure according to the invention to have feasibility; It is highly sensitive, watertightness good; Frequency response curve is steady, and cosine " 8 " word directive property is good, like Fig. 4, shown in 5.
Claims (2)
1. encapsulating structure that is used for T shape sensitive body vector hydrophone; It is characterized in that: comprise the stay pipe (1) that is used to settle signal extracting circuit plate (9); The top of stay pipe (1) extends the undergauge tubule (3) of built-in lead-in wire (11); Undergauge tubule (3) top is provided with supporting disk (2) and supporting disk (2) and is centrosymmetric with the axis of undergauge tubule (3); Offer on the supporting disk (2) and communicate with undergauge tubule (3) and central through hole (4) that size is identical with undergauge tubule (3) diameter, the symmetria bilateralis of central through hole (4) offers the rectangle draw-in groove (10) that an end communicates with central through hole (4) and is used to fix T shape sensitive body (5) and PCB circuit board (6); Supporting disk (2) is gone up submarginal position and is provided with annular slot (7); Be connected with entrant sound cap (8) in the annular slot (7); The position of going up between annular slot (7) and the central through hole (4) at supporting disk (2) offers the oiling threaded hole (19) that runs through supporting disk (2); Be marked with density and the approaching silicone oil (20) of water through oiling threaded hole (19) in the entrant sound cap (8), twist in the oiling threaded hole (19) and be connected to sealing screw (21); The bottom mouth of pipe of stay pipe (1) is plugged with metal plug (12); Offer cable through-hole (13) on the metal plug (12); Be plugged with output cable (14) in the cable through-hole (13), the cable exit embedding of metal plug (12) has layer of polyurethane (15).
2. a kind of encapsulating structure that is used for T shape sensitive body vector hydrophone according to claim 1; It is characterized in that: on the outer tube wall of stay pipe (1) bottom through the set nut that has been threaded (16); Metal plug (12) is provided with between the collar (17) and the mouth of pipe and set nut (16) of the compacted fixing of collar (17) bottom stay pipe (1) of evagination, also is provided with O-ring seal (18) between part in metal plug (12) inserts stay pipe (1) and the stay pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110407828 CN102607694B (en) | 2011-12-09 | 2011-12-09 | Packaging structure for T-shaped sensitive body vector hydrophone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110407828 CN102607694B (en) | 2011-12-09 | 2011-12-09 | Packaging structure for T-shaped sensitive body vector hydrophone |
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| CN102607694A true CN102607694A (en) | 2012-07-25 |
| CN102607694B CN102607694B (en) | 2013-10-30 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528663A (en) * | 2013-10-26 | 2014-01-22 | 中北大学 | MEMS vector hydrophone encapsulation structure with vibration isolation function |
| CN103557926A (en) * | 2013-10-26 | 2014-02-05 | 中北大学 | High-sensitivity wide-range bionic hydrophone based on nitrile butadiene rubber cap encapsulation |
| CN103808403A (en) * | 2014-02-26 | 2014-05-21 | 中北大学 | Nanometer electromechanical vector hydrophone suitable for deep water |
| CN104215318A (en) * | 2014-08-27 | 2014-12-17 | 北京航天控制仪器研究所 | Novel packaging structure for fiber optic hydrophone probe and fiber optic hydrophone array |
| CN104215318B (en) * | 2014-08-27 | 2017-01-04 | 北京航天控制仪器研究所 | Novel optical fiber hydrophone probe packaging structure and optical fiber hydrophone array |
| CN108917911A (en) * | 2018-08-20 | 2018-11-30 | 南京海精电子技术有限公司 | A kind of portable self-tolerant hydrophone |
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| US20040264906A1 (en) * | 2003-06-28 | 2004-12-30 | Cooke Donald A. | Fiber splice tray for use in optical fiber hydrophone array |
| CN101514919A (en) * | 2009-03-24 | 2009-08-26 | 中北大学 | Micro-electromechanical vector hydrophone |
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2011
- 2011-12-09 CN CN 201110407828 patent/CN102607694B/en active Active
Patent Citations (2)
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| US20040264906A1 (en) * | 2003-06-28 | 2004-12-30 | Cooke Donald A. | Fiber splice tray for use in optical fiber hydrophone array |
| CN101514919A (en) * | 2009-03-24 | 2009-08-26 | 中北大学 | Micro-electromechanical vector hydrophone |
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| 陈尚等: "一种新型的MEMS单矢量水听器研究", 《兵工学报》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528663A (en) * | 2013-10-26 | 2014-01-22 | 中北大学 | MEMS vector hydrophone encapsulation structure with vibration isolation function |
| CN103557926A (en) * | 2013-10-26 | 2014-02-05 | 中北大学 | High-sensitivity wide-range bionic hydrophone based on nitrile butadiene rubber cap encapsulation |
| CN103528663B (en) * | 2013-10-26 | 2015-07-15 | 中北大学 | MEMS vector hydrophone encapsulation structure with vibration isolation function |
| CN103557926B (en) * | 2013-10-26 | 2016-04-13 | 中北大学 | Based on the High-sensitivity wide-range bionic hydrophone of nitrile butadiene rubber cap encapsulation |
| CN103808403A (en) * | 2014-02-26 | 2014-05-21 | 中北大学 | Nanometer electromechanical vector hydrophone suitable for deep water |
| CN103808403B (en) * | 2014-02-26 | 2015-10-07 | 中北大学 | Be applicable to the dynamo-electric vector hydrophone of receiving of deep water |
| CN104215318A (en) * | 2014-08-27 | 2014-12-17 | 北京航天控制仪器研究所 | Novel packaging structure for fiber optic hydrophone probe and fiber optic hydrophone array |
| CN104215318B (en) * | 2014-08-27 | 2017-01-04 | 北京航天控制仪器研究所 | Novel optical fiber hydrophone probe packaging structure and optical fiber hydrophone array |
| CN108917911A (en) * | 2018-08-20 | 2018-11-30 | 南京海精电子技术有限公司 | A kind of portable self-tolerant hydrophone |
| CN108917911B (en) * | 2018-08-20 | 2020-11-20 | 南京海精电子技术有限公司 | Portable self-contained hydrophone |
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| CN102607694B (en) | 2013-10-30 |
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Inventor after: Zhang Guojun Inventor after: Jian Zeming Inventor after: Zhang Wendong Inventor after: Xiong Jijun Inventor after: Xue Chenyang Inventor after: Li Zhen Inventor after: Duan Junping Inventor after: Liu Linxian Inventor after: Xue Nan Inventor after: Liu Hong Inventor after: Shang Jianyu Inventor after: Zhao Peng Inventor after: Shen Hui Inventor after: Liu Mengran Inventor before: Zhang Guojun Inventor before: Zhang Wendong Inventor before: Liu Linxian Inventor before: Xiong Jijun Inventor before: Xue Chenyang Inventor before: Shang Jianyu Inventor before: Li Zhen |
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Free format text: CORRECT: INVENTOR; FROM: ZHANG GUOJUN ZHANG WENDONG LIU LINXIAN XIONG JIJUN XUE CHENYANG SHANG JIANYU LI ZHEN TO: ZHANG GUOJUN DUAN JUNPING LIU LINXIAN XUE NAN LIU HONG SHANG JIANYU ZHAO PENG SHEN HUI LIU MENGRAN JIAN ZEMING ZHANG WENDONG XIONG JIJUN XUE CHENYANG LI ZHEN |
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