CN202041278U - 3D (three-dimensional) vector hydrophone with hollow structure and neutral buoyancy in water - Google Patents
3D (three-dimensional) vector hydrophone with hollow structure and neutral buoyancy in water Download PDFInfo
- Publication number
- CN202041278U CN202041278U CN2011200957255U CN201120095725U CN202041278U CN 202041278 U CN202041278 U CN 202041278U CN 2011200957255 U CN2011200957255 U CN 2011200957255U CN 201120095725 U CN201120095725 U CN 201120095725U CN 202041278 U CN202041278 U CN 202041278U
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- hydrophone
- vibrating sensor
- vibration
- neutral buoyancy
- vector hydrophone
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- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model provides a 3D (three-dimensional) vector hydrophone with a hollow structure and neutral buoyancy in water. The hydrophone comprises a shell and six vibrating sensors, wherein the shell is a sphere which is provided with six vibrating sensor mounting holes and a cable output hole; the six vibrating sensor mounting holes are uniformly distributed on the surface of the sphere; one vibrating sensor is embedded into each vibrating sensor mounting hole; a connection cable of each vibrating sensor is led out through the cable output hole; and each vibrating sensor is provided with a threaded installation hole used for hanging. The 3D vector hydrophone can be widely applied to various fields of underwater sound, such as measurement, target location and the like of sonobuoys and low-noise moving targets. The hydrophone has the advantages that the hydrophone has small volume, the sensors are convenient to replace, the development cost is saved, etc.
Description
Technical field
The utility model relates to a kind of vector hydrophone, specifically a kind of trivector hydrophone that can have the hollow-core construction of neutral buoyancy in water.
Background technology
Vector hydrophone be a kind of can time synchronized, the space concurrent records the vibration signal at a certain particle place in the sound field under water, inside generally all adopts the vibration transducer conduct to pick up the unit of vibration, so vibration transducer can be chosen acceleration transducer, speed pickup and displacement transducer.In design, when making vector hydrophone, earlier vibration transducer being rigidly connected according to 3 d space coordinate usually is integral, and puts it into then in the encapsulating die, carries out embedding with waterproof material, sloughs mould at last, just the vector hydrophone that can obtain making.The curing of Embedding Material generally is to carry out in hot conditions, and high temperature damages the internal vibration sensor sometimes.When the vector hydrophone of this spline structure of development, when going wrong, normally can't repair in the measurement passage, promptly can't change the vibration transducer of internal damage.The vector hydrophone of this structure can not reparation property, the development cost of vector hydrophone is increased greatly.Therefore simple, the recoverable vector hydrophone of project organization can reduce the development cost of vector hydrophone greatly.
Summary of the invention
The purpose of this utility model is to provide a kind of manufacture craft simple, and each vector passage has the trivector hydrophone of the hollow-core construction that has neutral buoyancy in water of recoverability.
The purpose of this utility model is achieved in that and comprises housing and six vibration transducers, described housing is a spheroid, have six vibration transducer mounting holes and cable delivery outlet on the spheroid, six vibration transducer mounting holes are evenly distributed on spherome surface by Cartesian coordinates, inlay a vibration transducer in every vibration transducer mounting hole, the stube cable of every vibration transducer is drawn by the cable delivery outlet, has the installation threaded hole that is used to hang on every vibration transducer.
Described spheroid is a hollow ball.
Described cable is a multicore output cable.
Principal feature of the present utility model is embodied in:
1. six installation threaded holes that are used to hang are evenly distributed on the outside surface of spheroid by Cartesian coordinates;
2. six pressure vibration transducers are put along the symmetric position portion of Cartesian coordinates respectively, and are embedded in the outside surface of spheroid.
3. six vibration transducers can be changed.
According to the design concept of synchronous vibration type vector hydrophone, the general requirement of Embedding Material selected low-density composite for use, and the vector hydrophone that reaches development has the purpose of neutral buoyancy in water, and this kind vector hydrophone is generally a solid, and volume is bigger than normal sometimes.Therefore vector hydrophone of the present utility model inside is designed to hollow-core construction, can guarantee that vector hydrophone has under the prerequisite of neutral buoyancy in water, and volume reduces greatly.
The utility model adopts two vibration transducers to constitute a vector passage of vector hydrophone, the output of two vibration transducers is through forming the output signal of a vector passage behind the difference channel, so both can improve the sensitivity of vector passage, can reduce the noise of vector passage again.Vector hydrophone of the present utility model is the hollow body of a sphere, and the trivector information of sound field can intactly be provided, and the sensitivity of vector passage simultaneously can increase 6dB.
The utility model proposes a kind of hollow ball shape vector hydrophone that in water, has neutral buoyancy, three vector passages of six vibration transducer formation vector hydrophones have been adopted in the design, six vibration transducers according to Cartesian coordinates respectively cloth be placed on the surface of spheroid, can change any sensor, therefore reduce development cost.The vector hydrophone that the utility model proposes has adopted the hollow ball shape structure, and this structure is easy to make vector hydrophone to have neutral buoyancy in water, the reducing greatly of its volume ratio solid construction, thus can realize the miniaturization of vector hydrophone.
Theoretical foundation of the present utility model remains the theory of co-vibrating spherical vector hydrophone design, if just the physical dimension of the firm spheroid of acoustics (is kL＜＜1 much smaller than wave length of sound, k is a wave number, L is the maximum gauge of firm ball), when then it does free movement under the effect of underwater acoustic wave, the vibration velocity amplitude V of spheroid geometric center place water particle in the vibration velocity amplitude V of firm spheroid and the sound field
0Between have a following relation:
In the formula---the average density of firm spheroid; ρ
0---aqueous medium density.
By formula as can be known, equal the aqueous medium density p as the average density ρ of firm spheroid
0The time, the vibration velocity amplitude V of spheroid geometric center place water particle in its vibration velocity amplitude V and the sound field
0Identical, as long as firm spheroid has the sensor that can pick up this vibration, just can obtain the vibration signal of spheroid geometric center place water particle in the sound field like this.
So the utility model has the advantages that: adopt by low-density composite constitute the hollow ball shape structure be easy to realize that vector hydrophone has the requirement of neutral buoyancy in water; Vector hydrophone with identical working band adopts hollow-core construction, and is littler than the volume that adopts solid construction, can reach the purpose of vector hydrophone miniaturization.Vibration transducer is embedded in the surface of hollow ball, makes things convenient for the replacing of sensor, saves development cost.The utility model can be widely used in each field of the underwater sound, as the measurement of sonar buoy, low noise moving target, target localization etc.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a sectional view of the present utility model.
Embodiment
For example the utility model is done more detailed description below in conjunction with accompanying drawing:
At first, will make an individual hollow ball shell 4 that has seven circular holes, spherical shell 4 is made up of the rigid, low density compound substance, and wherein six circular holes are used for inlaying six vibration transducers 1 according to cartesian space coordinate branch.With marine glue watertight output cable head 5 is fixed in the remaining circular hole then, and the heart yearn 3 of output cable is divided into six groups, from six circular holes, take out respectively.After watertight is good the output line that has six vibration transducers 1 that threaded hole 2 is installed connected with the heart yearn 3 of the output cable that takes out from six circular holes respectively, adopt marine glue respectively six vibration transducers 1 to be fixed in the circular hole, and the heart yearn 3 that connects is also sent in the hollow ball shell 4 that is full of air 6 simultaneously.Like this, can not destroy under the integrally-built situation of vector hydrophone, can arbitrarily change any vibration transducer 1.
Claims (3)
1. trivector hydrophone that in water, has the hollow-core construction of neutral buoyancy, comprise housing and six vibration transducers, it is characterized in that: described housing is a spheroid, have six vibration transducer mounting holes and cable delivery outlet on the spheroid, six vibration transducer mounting holes are evenly distributed on spherome surface by Cartesian coordinates, inlay a vibration transducer in every vibration transducer mounting hole, the stube cable of every vibration transducer is drawn by the cable delivery outlet, has the installation threaded hole that is used to hang on every vibration transducer.
2. the trivector hydrophone that has the hollow-core construction of neutral buoyancy in water according to claim 1 is characterized in that: described spheroid is a hollow ball.
3. the trivector hydrophone that has the hollow-core construction of neutral buoyancy in water according to claim 1 and 2 is characterized in that: described cable is a multicore output cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200957255U CN202041278U (en) | 2011-04-02 | 2011-04-02 | 3D (three-dimensional) vector hydrophone with hollow structure and neutral buoyancy in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200957255U CN202041278U (en) | 2011-04-02 | 2011-04-02 | 3D (three-dimensional) vector hydrophone with hollow structure and neutral buoyancy in water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202041278U true CN202041278U (en) | 2011-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200957255U Expired - Lifetime CN202041278U (en) | 2011-04-02 | 2011-04-02 | 3D (three-dimensional) vector hydrophone with hollow structure and neutral buoyancy in water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202041278U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226712A (en) * | 2011-04-02 | 2011-10-26 | 哈尔滨工程大学 | Hollow-structured three-dimensional vector hydrophone with neutral buoyancy in water |
-
2011
- 2011-04-02 CN CN2011200957255U patent/CN202041278U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226712A (en) * | 2011-04-02 | 2011-10-26 | 哈尔滨工程大学 | Hollow-structured three-dimensional vector hydrophone with neutral buoyancy in water |
| CN102226712B (en) * | 2011-04-02 | 2012-10-31 | 哈尔滨工程大学 | Hollow-structured three-dimensional vector hydrophone with neutral buoyancy in water |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111116 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |