CN1648621A - High frequency small two-dimension coseismal column type vector hydrophone and its process - Google Patents
High frequency small two-dimension coseismal column type vector hydrophone and its process Download PDFInfo
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- CN1648621A CN1648621A CN 200510009700 CN200510009700A CN1648621A CN 1648621 A CN1648621 A CN 1648621A CN 200510009700 CN200510009700 CN 200510009700 CN 200510009700 A CN200510009700 A CN 200510009700A CN 1648621 A CN1648621 A CN 1648621A
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Abstract
The vector hydrophone consists of vector passage column casing, two vibration measuring sensors inside the casing, organic glass casing with adhered PVDF film and hanging unit. The vector passage column casing is molded with the mixture of low density epoxy resin and glass bead. The hydrophone can measure the sound pressure in water as scalar quantity and particle vibration speed in water. Compared with other HF vector hydrophones, the present invention has small size, light weight, high directional property, high sensitivity and good phase characteristic, so that it may be used in designing base sonar array and may be used widely in various hydroacoustic measurements to complete HF measurement.
Description
Technical field
The present invention relates to a kind of high frequency small two-dimension coseismal column type vector hydrophone and technology thereof.
Background technology
Introduced Russian three-dimensional low frequency vector hydrophone development technology so far from 1997, China has not only realized the production domesticization of technology in a short time fully, and successfully develop low frequency vector hydrophone of new generation with independent intellectual property right, three-dimensional at home at present low frequency vector hydrophone has begun to move towards engineering and has used, but along with the widespread usage of vector hydrophone in the Underwater Acoustics Engineering every field, the low frequency vector hydrophone can not meet the demands, and is urgent day by day to the demand of high-frequency vector nautical receiving set.
General low frequency vector hydrophone is meant the nautical receiving set of working band below 1kHz.As everyone knows, it is more that the Underwater Acoustics Engineering field is higher than the occasion of 1kHz frequency of operation, demand is bigger, but according to as can be known with the principle Analysis of vibration shape vector hydrophone, if copy the structural design high-frequency vector nautical receiving set of low frequency vector hydrophone, then the upper limiting frequency of its work only can reach about 5kHz, otherwise frequency is high again, then the physical dimension of nautical receiving set drops to and has only several mm～tens mm scopes, this can't realize on manufacture craft substantially, unless adopt the MEMS technology, but up to the present comparatively the silicon microtechnology in the ripe underwater acoustic transducer field that can be applicable to still be in conceptual phase.In such cases, the structure that changes vector hydrophone is the most direct effective method.Therefore, under the prerequisite of fully having studied the vector hydrophone basic theories, high frequency small two-dimension coseismal column type vector hydrophone arises at the historic moment, thereby has satisfied present demand to the high-frequency vector nautical receiving set.
The high-frequency vector nautical receiving set of abroad developing at present, physical dimension is all bigger, according to acoustic theory as can be known, its sound field scattering directive property is bigger to the influence of the natural directive property of vector hydrophone, as seen list of references B.A. Г о р д и e н к о В e к т о р н о-ф а з о в ы e м e т о д в а к у с т и к e. М о с к в а, Н а у к а, 1989:p46-66.The domestic present in this regard data of publishing of still not having.
Summary of the invention
In order to expand the working band of vector hydrophone, adapt to of the requirement of each field of Underwater Acoustics Engineering to the vector hydrophone upper limiting frequency, the invention provides a kind of high frequency small two-dimension coseismal column type vector hydrophone, it not only can measure acoustic pressure scalar in the water, and can record the particle vibration velocity of X in the water, Y both direction, and volume is little, in light weight, highly sensitive, directive property is good, and the high-frequency vector nautical receiving set volume that has overcome other structures is big, the shortcoming of directive property difference.
Formation of the present invention is, vibration-measuring sensor [3] is placed in the vector passage cylindricality shell body [1] that has wire guide [4], then it is potted in the organic glass housing [2] that is stained with PVDF film [5], adopt whole nautical receiving set of polyurethane gel perfusion at last, during use this vector hydrophone is suspended on the rigid frame by suppending hole [7] with 8 springs.This vector hydrophone adopts PVDF film nautical receiving set to obtain sound field scalar information, adopts vibration-measuring sensor [3] to obtain the sound field Vector Message.Because vibration-measuring sensor [3] itself has the characteristic that cross sensitivity is low, main shaft is highly sensitive, so adopt this technology can guarantee that this invention has good cosine directivity and very high sound pressure sensitivity.
The theoretical foundation of this nautical receiving set design is: if the physical dimension of the firm cylinder of acoustics is far smaller than wavelength (is kL＜＜1, k is a wave number, L is the maximum linear yardstick of firm cylinder), when then it does free movement under the underwater acoustic wave effect, the vibration velocity amplitude V of cylinder geometric center place water particle in the vibration velocity amplitude V of firm cylinder and the sound field
oBetween have a following relation:
Wherein: ρ
0---aqueous medium density, the average density of ρ---firm cylinder.
By formula as can be known, equal the aqueous medium density p as the average density ρ of firm cylinder
0The time, the vibration velocity amplitude V of cylinder geometric center place water particle in its vibration velocity amplitude V and the sound field
oIdentical, like this as long as firm column body has the senser element that can pick up this vibration velocity can obtain the vibration velocity of cylinder geometric center place water particle in the sound field, so require the ensemble average density of this nautical receiving set should be near aqueous medium density, and because its inner vibration-measuring sensor [3] is a metal device, the density of its shell body [1] should be less than aqueous medium density for this reason.
The present invention only selects two vibration-measuring sensors [3] for use, it is placed on X, Y passage respectively, therefore the coherence request to the sensitivity of two vibration-measuring sensors [3] and phase propetry is not high, this has just been avoided the trouble of sensor pairing in the low frequency vector hydrophone structure, make the making of sensor simple relatively, be easier to realize, also make the performance reliability of nautical receiving set higher, reduce volume simultaneously, reduced density.
The Mold Making that the shell body of this nautical receiving set [1] adopts the potpourri utilization be made up of epoxy resin and glass microballoon to design in advance forms, and the two ratio of epoxy resin and glass microballoon determines the density of potpourri, and its average density is about 0.65 ~ 0.75g/cm
3(epoxy resin of different model is slightly different with the glass microballoon mixture density).Glass microballoon is a kind of material of absolute rigidity, have chemical inertness, proportion is less, and can bear very big pressure after epoxy resin mixes, this potpourri has very high hardness, high mechanical properties, extremely low hydroscopicity and good dielectric property, and can anti-objectionable impurities corrosion.
For the cylindrical outer cover body [1] that makes this nautical receiving set has enough little density, must increase the content of glass microballoon in potpourri, but should guarantee also that simultaneously potpourri has good flowability, and there is not bubble to generate in the potpourri between the glass microballoon, like this, in process, divide the different stages by a certain percentage with epoxy resin with after glass microballoon mixes, add hardening agent, pour in the mould, after oven dry and finishing, just can obtain the outer rigid housing body [1] of this nautical receiving set to the surfaces externally and internally of shell body [1].
In addition, for making nautical receiving set ensemble average density near aqueous medium density, the sound pressure channel of this nautical receiving set adopts the PVDF membraneous material, and its density is little, in light weight, is easier to reduce the whole geometry size of nautical receiving set, satisfies designing requirement.
So advantage of the present invention is: nautical receiving set ensemble average density is low (to be about 1.1g/cm
3About), physical dimension little (minimum diameter can reach about 20mm) has cosine directivity preferably, can obtain Particle Vibration Velocity vector in the water when recording the acoustic pressure scalar.Therefore, not only volume is little, in light weight for this high-frequency vector nautical receiving set, directive property is good, and channel sensitivity and phase propetry are good, utilize the above-mentioned advantage of this nautical receiving set can solve the sonar transducer array design problem.The present invention can be widely used in each field of the underwater sound, as sonar buoy system, low-noise measurement system, bistatic sonar system, torpedo navigational system, underwater communication system, transponder etc., finishes the high frequency measurement task.
Description of drawings
Fig. 1 is a high frequency small two-dimension coseismal column type vector hydrophone vector passage cylindricality shell body diagrammatic cross-section
Fig. 2 is a high frequency small two-dimension coseismal column type vector hydrophone organic glass housing diagrammatic cross-section
Embodiment
At first, adopt epoxy resin and glass microballoon potpourri to make the vector passage cylindricality shell body [1] that has wire guide [4], secondly vibration-measuring sensor [3] is irritated and put wherein, then vector passage cylindricality shell body [1] is placed the organic glass housing [2] that is stained with PVDF film [5], adopt the whole embedding of polyurethane gel to form nautical receiving set at last, its cable output end [6] places on the cylinder upper surface, and symmetry is reserved [7] 8 of suppending holes respectively in the nautical receiving set upper and lower end face.Wherein vibration-measuring sensor [3] generally selects for use titanium alloy and brass material to make, and it is of a size of: φ 10mm * 18mm.This nautical receiving set monolithic case diameter is less than 50mm, and weight is about 100g, and working band is 1kHz～10kHz, and free field voltage sensitivity is-190dB (0dB re 1V/ μ Pa, test frequency 10kHz).
In actual use, use spring suspension on fixed support this vector hydrophone, place water then, can obtain mark, the Vector Message of sound field in the water.
The present invention can be widely used in each field of the underwater sound, as sonar buoy system, low-noise measurement system, bistatic sonar system, torpedo navigational system, underwater communication system, transponder etc., finishes the high frequency measurement task.
Claims (4)
1. high frequency small two-dimension coseismal column type vector hydrophone and technology thereof is characterized in that this nautical receiving set comprises vector passage cylindricality shell body [1], two the quadrature vibration-measuring sensors [3] laid in this housing [1] inside that have wire guide [4] and places in the organic glass housing [2]; And adopt 8 springs that vector hydrophone is suspended on the rigid frame by suppending hole [7].
2. high frequency small two-dimension coseismal column type vector hydrophone as claimed in claim 1 and technology thereof is characterized in that the technology of vector passage cylindricality shell body [1] is to record moulding by low density material by mould.
3. high frequency small two-dimension coseismal column type vector hydrophone as claimed in claim 1 and technology thereof is characterized in that the outer PVDF film that is stained with of organic glass housing [2].
4. high frequency small two-dimension coseismal column type vector hydrophone as claimed in claim 2 and technology thereof, the low density material that it is characterized in that vector passage cylindricality shell body [1] is epoxy resin and glass microballoon compounding substances by a certain percentage, and this mixture density is 0.65～0.75g/cm generally speaking
3, the epoxy resin of different model is slightly different with the glass microballoon mixture density.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100097008A CN100554896C (en) | 2005-02-02 | 2005-02-02 | High frequency small two-dimension coseismal column type vector hydrophone |
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| CNB2005100097008A CN100554896C (en) | 2005-02-02 | 2005-02-02 | High frequency small two-dimension coseismal column type vector hydrophone |
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| CN1648621A true CN1648621A (en) | 2005-08-03 |
| CN100554896C CN100554896C (en) | 2009-10-28 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425423C (en) * | 2007-06-07 | 2008-10-15 | 哈尔滨工程大学 | Spherical high-frequency vector sensor vibration velocity channel and sound pressure channel integral processing method |
| CN100443866C (en) * | 2005-09-05 | 2008-12-17 | 中国电子科技集团公司第四十九研究所 | Multi-piece integration type three-dimensional vector hydrophone apparatus |
| CN100456003C (en) * | 2007-06-07 | 2009-01-28 | 哈尔滨工程大学 | Composite synchronous vibration type high-frequency tri-axial vector hydrophone |
| CN106813767A (en) * | 2017-01-03 | 2017-06-09 | 湖北文理学院 | A kind of sensitivity measuring method of usp probes |
| CN110081963A (en) * | 2019-03-14 | 2019-08-02 | 哈尔滨工程大学 | A kind of motor driven detects sonobuoy with vibration shape vector |
| CN110631688A (en) * | 2019-09-30 | 2019-12-31 | 南京元感微电子有限公司 | Vector underwater acoustic sensor |
-
2005
- 2005-02-02 CN CNB2005100097008A patent/CN100554896C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443866C (en) * | 2005-09-05 | 2008-12-17 | 中国电子科技集团公司第四十九研究所 | Multi-piece integration type three-dimensional vector hydrophone apparatus |
| CN100425423C (en) * | 2007-06-07 | 2008-10-15 | 哈尔滨工程大学 | Spherical high-frequency vector sensor vibration velocity channel and sound pressure channel integral processing method |
| CN100456003C (en) * | 2007-06-07 | 2009-01-28 | 哈尔滨工程大学 | Composite synchronous vibration type high-frequency tri-axial vector hydrophone |
| CN106813767A (en) * | 2017-01-03 | 2017-06-09 | 湖北文理学院 | A kind of sensitivity measuring method of usp probes |
| CN106813767B (en) * | 2017-01-03 | 2019-07-16 | 湖北文理学院 | A kind of sensitivity measuring method of usp probe |
| CN110081963A (en) * | 2019-03-14 | 2019-08-02 | 哈尔滨工程大学 | A kind of motor driven detects sonobuoy with vibration shape vector |
| CN110631688A (en) * | 2019-09-30 | 2019-12-31 | 南京元感微电子有限公司 | Vector underwater acoustic sensor |
| CN110631688B (en) * | 2019-09-30 | 2022-01-25 | 南京元感微电子有限公司 | Vector underwater acoustic sensor |
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| CN100554896C (en) | 2009-10-28 |
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Granted publication date: 20091028 Termination date: 20120202 |