CN110006516A - A kind of the sensitivity fast calibration device and method of Scale Fiber-Optic Hydrophone Array - Google Patents
A kind of the sensitivity fast calibration device and method of Scale Fiber-Optic Hydrophone Array Download PDFInfo
- Publication number
- CN110006516A CN110006516A CN201910227187.1A CN201910227187A CN110006516A CN 110006516 A CN110006516 A CN 110006516A CN 201910227187 A CN201910227187 A CN 201910227187A CN 110006516 A CN110006516 A CN 110006516A
- Authority
- CN
- China
- Prior art keywords
- hydrophone
- array
- standard
- testing fiber
- hydrophone array
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
- G01H3/005—Testing or calibrating of detectors covered by the subgroups of G01H3/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
Abstract
The present invention relates to the sensitivity fast calibration devices and method of a kind of Scale Fiber-Optic Hydrophone Array, comprising: acoustical signal module, standard hydrophone, beaded support and signal resolve module etc..By the way that Scale Fiber-Optic Hydrophone Array and standard hydrophone are fixed on beaded support, sound source is placed at the centre of sphere of beaded support, it realizes that testing fiber hydrophone array element and standard hydrophone are in the sound field of same sound pressure, the sensitivity measure of whole fibre optic hydrophone array elements in array can be realized by once demarcating.The program has many advantages, such as to have the advantages of simple structure and easy realization, and can effectively improve the sensitivity test efficiency of fibre optic sensor arra.
Description
Technical field
The present invention relates to fibre optic hydrophone field, the sensitivity fast calibration device of mainly a kind of Scale Fiber-Optic Hydrophone Array
And method.
Background technique
The sensitivity of fibre optic hydrophone is defined as: the phase of the interferometer two-arm of fibre optic hydrophone caused by audible signal
DifferenceIt is to be present in the ratio of the free field acoustic pressure at the position of the hydrophone acoustic centre of source in sound field before introducing hydrophone.Unit: arc
Degree/pa (rad/Pa).
Generally, denary logarithm is asked to obtain phase sensitive grade the ratio of above-mentioned sensitivity and its a reference value, with this
Indicate fibre optic hydrophone to the response sensitivity of acoustic pressure.Unit: decibel (dB).
M=20 × lg (MP/MR) (2)
Wherein, a reference value MR=1rad/ μ Pa.
The measurement of fibre optic hydrophone sensitivity is generally carried out by comparing method.Basic principle is as follows, and testing fiber water is listened
Device and standard hydrophone, which are placed in the same sound field in pond, carries out sound pressure measurement, and the measurement result of the two is compared to obtain optical fiber
The sensitivity of hydrophone.
When fibre optic hydrophone forms array, due to the length limitation of array, it is difficult to ensure that all fibre optic hydrophones of array
Array element is in the sound field of same acoustic pressure.In order to accurately measure the sensitivity of testing fiber hydrophone, standard hydrophone need to be consolidated
Near fibre optic hydrophone to be measured, it is ensured that the two is in the sound field of same acoustic pressure, then carries out the spirit of fibre optic hydrophone
Sensitivity test.
It follows that needing repeatedly when testing the sensitivity of Scale Fiber-Optic Hydrophone Array by entire Scale Fiber-Optic Hydrophone Array
It leaves the water from pond, mobile standard hydrophone to next testing fiber hydrophone is nearby fixed.Therefore, optical fiber water
Listen the sensitivity test complex steps of device array, heavy workload, in particular with the continuous expansion of Scale Fiber-Optic Hydrophone Array scale,
The sensitivity test of one array needs to expend more days.Simultaneously as promotion repeatedly, decentralization Scale Fiber-Optic Hydrophone Array are needed,
Also increase the risk of array damage.
Summary of the invention
For in current Scale Fiber-Optic Hydrophone Array, fibre optic hydrophone Sensitivity Calibration testing procedure is cumbersome, heavy workload, together
The promotion of Shi Fanfu, decentralization Scale Fiber-Optic Hydrophone Array, are easy the problem of increasing array damage risk, the present invention provides a kind of optical fiber
The sensitivity fast calibration device and method of hydrophone array pass through the space between control sound source and testing fiber hydrophone array
Positional relationship, realizes testing fiber hydrophone array element and standard hydrophone is in the sound field of same sound pressure, and primary calibration is
The sensitivity measure of whole fibre optic hydrophone array elements in array can be achieved.
The object of the present invention is achieved by the following technical solutions.A kind of sensitivity of Scale Fiber-Optic Hydrophone Array is quick
The device of calibration mainly includes
Acoustical signal module, including sound source controller and sound source, for exporting sound pressure signal；
Standard hydrophone, for measuring sound pressure signal；
Testing fiber hydrophone array, for receiving sound pressure signal；
Beaded support, for fixing testing fiber hydrophone array and standard hydrophone, spherical surface is in thread hollow structure structure, is made
It obtains testing fiber hydrophone array and standard hydrophone is in the sound field of same sound pressure；
The beaded support displays cable disk with fibre optic hydrophone by bearing rope and is connected, for hanging for beaded support
It puts, so that sound source is placed at the centre of sphere of beaded support；
Signal resolves module, for resolving the sensitivity of testing fiber hydrophone array.
The standard hydrophone is fixed on the outer wall of beaded support, testing fiber hydrophone array compact disc in the shape of a spiral
It is wound on beaded support outer wall, each array element and standard hydrophone are located on the same spherical surface in testing fiber hydrophone array.
The invention discloses a kind of methods of the sensitivity Fast Calibration of Scale Fiber-Optic Hydrophone Array, by testing fiber hydrophone
Array and standard hydrophone are fixed on beaded support, beaded support by fibre optic hydrophone display cable disk by bearing rope hang to
In pond, by the spatial relation between control sound source and testing fiber hydrophone array, so that testing fiber hydrophone array
The array element and standard hydrophone of column are in the sound field of same sound pressure；The control of sound source controller is located at underwater sound source and issues acoustic pressure
Signal, signal resolves module and receives the output signal of testing fiber hydrophone array and standard hydrophone, and carries out testing fiber
Hydrophone array sensitivity resolves.
Signal, which resolves, is equipped with testing fiber hydrophone array signal demodulation module, standard hydrophone signal solution mode transfer in module
Block and comparator module are carried out by testing fiber hydrophone array signal demodulation module, standard hydrophone signal demodulation module
Each delayed output signals and the synchronous of standard hydrophone output signal in Scale Fiber-Optic Hydrophone Array is surveyed to resolve；Pass through comparator mould
Block compares the output signal of the output signal of each array element and standard hydrophone in testing fiber hydrophone array, obtains testing fiber
The sensitivity of hydrophone array.
The invention has the benefit that by the way that Scale Fiber-Optic Hydrophone Array and standard hydrophone are fixed on a beaded support
On, and sound source is placed at the centre of sphere of beaded support, it realizes testing fiber hydrophone array element and standard hydrophone is in phase
With in the sound field of acoustic pressure, the sensitivity measure of whole fibre optic hydrophone array elements in array can be realized by once demarcating.The party
Case has many advantages, such as to have the advantages of simple structure and easy realization, and can effectively improve the sensitivity test efficiency of fibre optic sensor arra.
Detailed description of the invention
Fig. 1 is the sensitivity Fast Calibration system setting figure of Scale Fiber-Optic Hydrophone Array in the present invention.
Fig. 2 is the schematic diagram that Scale Fiber-Optic Hydrophone Array is fixed on beaded support outer wall.
Fig. 3 is the location diagram of sound source and beaded support.
Description of symbols: sound source 1, standard hydrophone 2, beaded support 3, testing fiber hydrophone array 4, bearing rope 5,
Fibre optic hydrophone displays cable disk 6, pond 7.
Specific embodiment
Below in conjunction with attached drawing, the present invention will be described in detail:
As shown in Figure 1, a kind of device of the sensitivity Fast Calibration of Scale Fiber-Optic Hydrophone Array, it is characterised in that: main packet
It includes
Acoustical signal module, including sound source controller and sound source 1, for exporting sound pressure signal；
Standard hydrophone 2, for measuring sound pressure signal；
Testing fiber hydrophone array 4, for receiving sound pressure signal；
Beaded support 3, for fixing testing fiber hydrophone array 4 and standard hydrophone 2, spherical surface is in thread hollow structure knot
Structure, so that testing fiber hydrophone array 4 and standard hydrophone 2 are in the sound field of same sound pressure；Specifically, the standard
Hydrophone 2 is fixed on the outer wall of beaded support 3, and testing fiber hydrophone array 4 is closely coiled in outside beaded support 3 in the shape of a spiral
On wall, as shown in Fig. 2, the schematic diagram that Scale Fiber-Optic Hydrophone Array is fixed on beaded support outer wall is given, figure Green helix
Testing fiber hydrophone array 4 is characterized, array is closely coiled on beaded support outer wall, while one is fixed on beaded support
A standard hydrophone.At this point, each array element and standard hydrophone are located on the same spherical surface in testing fiber hydrophone array 4.
The beaded support 3 displays cable disk 6 with fibre optic hydrophone by bearing rope 5 and is connected, for beaded support 3
It hangs, so that sound source 1 is placed at the centre of sphere of beaded support 3；As shown in figure 3, giving the ball that sound source is placed in beaded support
Schematic diagram at the heart.Beaded support radius is R, is controlled by depth and relative position, sound source is placed in the ball of beaded support
A at the heart.Under this condition, the acoustic pressure on spherical surface is identical when the acoustical signal that sound source issues arrives at beaded support.That is testing fiber
Hydrophone array element and standard hydrophone are in the sound field of same sound pressure.
Signal resolves module, for resolving the sensitivity of testing fiber hydrophone array 4.
The invention discloses a kind of methods of the sensitivity Fast Calibration of Scale Fiber-Optic Hydrophone Array, by testing fiber hydrophone
Array 4 and standard hydrophone 2 are fixed on beaded support 3, and beaded support 3 displays cable disk 6 by bearing rope 5 by fibre optic hydrophone
It hangs into pond 7, by the spatial relation between control sound source 1 and testing fiber hydrophone array 4, so that testing fiber
The array element and standard hydrophone 2 of hydrophone array 4 are in the sound field of same sound pressure；The control of sound source controller is located at underwater sound
Source 1 issues sound pressure signal, and signal resolves the output signal that module receives testing fiber hydrophone array 4 and standard hydrophone 2, and
4 sensitivity of testing fiber hydrophone array is carried out to resolve.
Signal, which resolves, is equipped with testing fiber hydrophone array signal demodulation module, standard hydrophone signal solution mode transfer in module
Block and comparator module are carried out by testing fiber hydrophone array signal demodulation module, standard hydrophone signal demodulation module
The synchronous of 2 output signal of each delayed output signals and standard hydrophone in Scale Fiber-Optic Hydrophone Array 4 is surveyed to resolve；What resolving obtained
The output signal of each array element and the output signal of standard hydrophone enter comparator module in Scale Fiber-Optic Hydrophone Array, by comparing
Obtain the sensitivity of testing fiber hydrophone array.Since testing fiber hydrophone array element and standard hydrophone are in same sound pressure
Sound field in, therefore the sensitivity measure of whole fibre optic hydrophone array elements can be realized in array by once calibration.
It is understood that it will be understood by those skilled in the art that being subject to technical solution of the present invention and inventive concept
It all should fall within the scope of protection of the appended claims of the present invention with replacement or change.
Claims (4)
1. a kind of device of the sensitivity Fast Calibration of Scale Fiber-Optic Hydrophone Array, it is characterised in that: mainly include
Acoustical signal module, including sound source controller and sound source (1), for exporting sound pressure signal；
Standard hydrophone (2), for measuring sound pressure signal；
Testing fiber hydrophone array (4), for receiving sound pressure signal；
Beaded support (3), for fixing testing fiber hydrophone array (4) and standard hydrophone (2), spherical surface is in thread hollow structure knot
Structure, so that testing fiber hydrophone array (4) and standard hydrophone (2) are in the sound field of same sound pressure；
The beaded support (3) is connected by bearing rope (5) with fibre optic hydrophone display cable disk (6), and beaded support is used for
(3) hang, so that sound source (1) is placed at the centre of sphere of beaded support (3)；
Signal resolves module, for resolving the sensitivity of testing fiber hydrophone array (4).
2. the device of the sensitivity Fast Calibration of Scale Fiber-Optic Hydrophone Array according to claim 1, it is characterised in that: described
Standard hydrophone (2) be fixed on the outer walls of beaded support (3), testing fiber hydrophone array (4) in the shape of a spiral compact disc around
On beaded support (3) outer wall, each array element and standard hydrophone (2) are located at the same ball in testing fiber hydrophone array (4)
On face.
3. a kind of method of the sensitivity Fast Calibration of Scale Fiber-Optic Hydrophone Array, it is characterised in that: by testing fiber hydrophone array
Column (4) and standard hydrophone (2) are fixed on beaded support (3), and beaded support (3) displays cable disk (6) by fibre optic hydrophone
It is hung by bearing rope (5) into pond, is closed by the spatial position between control sound source (1) and testing fiber hydrophone array (4)
System, so that the array element of testing fiber hydrophone array (4) and standard hydrophone (2) are in the sound field of same sound pressure；Sound source control
Device processed control is located at underwater sound source (1) and issues sound pressure signal, signal resolve module receive testing fiber hydrophone array (4) and
The output signal of standard hydrophone (2), and carry out testing fiber hydrophone array (4) sensitivity resolving.
4. the method for the sensitivity Fast Calibration of Scale Fiber-Optic Hydrophone Array according to claim 3, it is characterised in that: signal
It resolves and is equipped with testing fiber hydrophone array signal demodulation module, standard hydrophone signal demodulation module and comparator mould in module
Block carries out survey fibre optic hydrophone by testing fiber hydrophone array signal demodulation module, standard hydrophone signal demodulation module
Each delayed output signals and the synchronous of standard hydrophone (2) output signal resolve in array (4)；Compared by comparator module
The output signal of the output signal of each array element and standard hydrophone (2), obtains testing fiber in testing fiber hydrophone array (4)
The sensitivity of hydrophone array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910227187.1A CN110006516A (en) | 2019-03-25 | 2019-03-25 | A kind of the sensitivity fast calibration device and method of Scale Fiber-Optic Hydrophone Array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910227187.1A CN110006516A (en) | 2019-03-25 | 2019-03-25 | A kind of the sensitivity fast calibration device and method of Scale Fiber-Optic Hydrophone Array |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110006516A true CN110006516A (en) | 2019-07-12 |
Family
ID=67168036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910227187.1A Pending CN110006516A (en) | 2019-03-25 | 2019-03-25 | A kind of the sensitivity fast calibration device and method of Scale Fiber-Optic Hydrophone Array |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110006516A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111538107A (en) * | 2020-04-16 | 2020-08-14 | 山东省科学院激光研究所 | Device and method for testing sensitivity of optical cable in different directions |
| CN112033519A (en) * | 2020-08-18 | 2020-12-04 | 中国船舶重工集团公司第七一五研究所 | Hydrophone sensitivity calibration system and method based on interpolation and fitting |
| CN112033518A (en) * | 2020-08-18 | 2020-12-04 | 中国船舶重工集团公司第七一五研究所 | Hydrophone sensitivity calibration method based on sine function fitting |
| CN112362154A (en) * | 2020-10-30 | 2021-02-12 | 海鹰企业集团有限责任公司 | Sound pressure calibration method for hydrophone of long linear array cable |
| CN112484837A (en) * | 2020-11-24 | 2021-03-12 | 电子科技大学 | Optical fiber space positioning system and implementation method thereof |
| CN114740461A (en) * | 2022-06-07 | 2022-07-12 | 深圳市晟达通讯设备有限公司 | Sonar system and be used for this sonar system's underwater positioning antenna |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879764A (en) * | 2012-10-16 | 2013-01-16 | 浙江大学 | Underwater sound source direction estimating method |
| CN103148975A (en) * | 2013-02-04 | 2013-06-12 | 江苏大学 | Test device used for ultrasonic field shear force measurement |
| KR101452853B1 (en) * | 2013-11-28 | 2014-10-22 | 한국해양과학기술원 | calibration device of underwater hydrophone array location using transducer |
| CN104407340A (en) * | 2014-12-02 | 2015-03-11 | 河海大学常州校区 | Device and method for calibrating lineup of dragging linear array |
| CN107479029A (en) * | 2017-08-10 | 2017-12-15 | 中国计量大学 | Umbrella-type underwater sound source detection means and its calibration and detection method |
| CN107884741A (en) * | 2017-10-30 | 2018-04-06 | 北京理工大学 | A kind of more broadband sound source fast orienting methods of more ball arrays |
-
2019
- 2019-03-25 CN CN201910227187.1A patent/CN110006516A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879764A (en) * | 2012-10-16 | 2013-01-16 | 浙江大学 | Underwater sound source direction estimating method |
| CN103148975A (en) * | 2013-02-04 | 2013-06-12 | 江苏大学 | Test device used for ultrasonic field shear force measurement |
| KR101452853B1 (en) * | 2013-11-28 | 2014-10-22 | 한국해양과학기술원 | calibration device of underwater hydrophone array location using transducer |
| CN104407340A (en) * | 2014-12-02 | 2015-03-11 | 河海大学常州校区 | Device and method for calibrating lineup of dragging linear array |
| CN107479029A (en) * | 2017-08-10 | 2017-12-15 | 中国计量大学 | Umbrella-type underwater sound source detection means and its calibration and detection method |
| CN107884741A (en) * | 2017-10-30 | 2018-04-06 | 北京理工大学 | A kind of more broadband sound source fast orienting methods of more ball arrays |
Non-Patent Citations (1)
| Title |
|---|
| 任文堂等: "《工业噪声和振动控制技术》", 31 December 1989, 冶金工业出版社 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111538107A (en) * | 2020-04-16 | 2020-08-14 | 山东省科学院激光研究所 | Device and method for testing sensitivity of optical cable in different directions |
| CN111538107B (en) * | 2020-04-16 | 2022-11-08 | 山东省科学院激光研究所 | Device and method for testing sensitivity of optical cable in different directions |
| CN112033519A (en) * | 2020-08-18 | 2020-12-04 | 中国船舶重工集团公司第七一五研究所 | Hydrophone sensitivity calibration system and method based on interpolation and fitting |
| CN112033518A (en) * | 2020-08-18 | 2020-12-04 | 中国船舶重工集团公司第七一五研究所 | Hydrophone sensitivity calibration method based on sine function fitting |
| CN112362154A (en) * | 2020-10-30 | 2021-02-12 | 海鹰企业集团有限责任公司 | Sound pressure calibration method for hydrophone of long linear array cable |
| CN112484837A (en) * | 2020-11-24 | 2021-03-12 | 电子科技大学 | Optical fiber space positioning system and implementation method thereof |
| CN112484837B (en) * | 2020-11-24 | 2021-12-28 | 电子科技大学 | Optical fiber space positioning system and implementation method thereof |
| CN114740461A (en) * | 2022-06-07 | 2022-07-12 | 深圳市晟达通讯设备有限公司 | Sonar system and be used for this sonar system's underwater positioning antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110006516A (en) | A kind of the sensitivity fast calibration device and method of Scale Fiber-Optic Hydrophone Array | |
| CN112567581B (en) | Telegraph pole position specifying system, device, method and computer readable medium | |
| US10345139B2 (en) | Non-isotropic acoustic cable | |
| CN105387924B (en) | A kind of optical fiber vector hydrophone with posture self-rectification function | |
| JP2011015050A (en) | Array for beam forming, and sound source exploration/measurement system using the same | |
| CN112362154A (en) | Sound pressure calibration method for hydrophone of long linear array cable | |
| CN204788643U (en) | System for improved generation transformer, reactor make an uproar sound localization and vibration detection | |
| Fang et al. | Drone detection and localization using enhanced fiber-optic acoustic sensor and distributed acoustic sensing technology | |
| CN109443515A (en) | Test macro and method in a kind of small size hydrophone sensitivity air | |
| US11442184B2 (en) | Infrasonic detection using a parallel dipole line trap | |
| CN108548514A (en) | A kind of pipe production line excess fiber length dynamic measurement system | |
| US4581727A (en) | Finding the direction of a sound | |
| JP2017173034A (en) | Method for locating abnormal part of pipeline | |
| CN113238233B (en) | Device and method for quickly measuring sensitivity of long linear array element based on underwater camera | |
| EP3594636A1 (en) | Liquid immersion sensor | |
| CN109379687A (en) | A kind of measurement of line array loudspeaker system vertical directivity and projectional technique | |
| US20220136871A1 (en) | Optical fiber sensing system | |
| CN218916523U (en) | Distributed optical fiber sound field sensing device with reference signals | |
| Golacki et al. | Distributed optical fibre acoustic sensors–future applications in audio and acoustics engineering | |
| RU139778U1 (en) | DEVICE FOR ACOUSTIC ANTIBOISE TESTS | |
| CN207585760U (en) | Noise detection apparatus | |
| RU91625U1 (en) | SENSOR FOR DETERMINING THE SIZE AND DIRECTION OF DEFORMATION OF A LONG PROJECT | |
| CN216559324U (en) | Hydrophone array measuring device | |
| Jia et al. | Low frequency absolute calibration of complex sensitivity of vector receivers in free-field | |
| CN209605930U (en) | A kind of fibre optic hydrophone radial acceleration sensitivity detector and its system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190712 |