CN110708653A - Acoustic pressure calibration device for underwater acoustic transducer - Google Patents
Acoustic pressure calibration device for underwater acoustic transducer Download PDFInfo
- Publication number
- CN110708653A CN110708653A CN201910984486.XA CN201910984486A CN110708653A CN 110708653 A CN110708653 A CN 110708653A CN 201910984486 A CN201910984486 A CN 201910984486A CN 110708653 A CN110708653 A CN 110708653A
- Authority
- CN
- China
- Prior art keywords
- transducer
- acoustic
- sound
- pressure calibration
- calibration device
- 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
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a sound pressure calibration device of an underwater acoustic transducer, and belongs to the technical field of sound pressure calibration. The underwater acoustic transducer sound pressure calibration device comprises a tube body, a tube cover and a shockproof base; the bottom of the tube body is fixedly connected with a sound source for emitting sound to form a sound field; the lower end of the pipe cover is connected with two height adjusting rods; two place the test bar in the middle of the altitude mixture control pole, the test bar is used for placing standard receiver and surveyed the transducer, will standard receiver with the same horizontal plane in the body is put into to the transducer of being surveyed, through the contrast standard receiver with the transducer of being surveyed sensitivity can calibrate in same sound field the transducer acoustic pressure of being surveyed compares with traditional transducer and puts into the method of aquatic test after the encapsulating, and this underwater transducer acoustic pressure calibrating device is more scientific, and same transducer can carry out calibration many times, practices thrift financial resources and materials greatly.
Description
Technical Field
The invention relates to the technical field of sound pressure calibration, in particular to a sound pressure calibration device of an underwater acoustic transducer.
Background
At present, the abundant underwater acoustic transducer low-frequency products are developed more and more, and the demand is also greater and greater. However, when trying out these products, it is often necessary to test the low frequency acoustic performance of the semi-finished product. These semi-finished products are not filled with glue, vulcanized and not sealed, and thus cannot be used for underwater acoustic performance measurement.
The existing standing wave tube uses water as a propagation medium, a low-frequency sound source is installed at the bottom of the tube, an opening surface is arranged at the other end of the tube, and a mirror reflection is formed at the interface of the water and air to form a standing wave sound field. And (3) filling the finished product with glue, sealing the transducer, then putting the transducer into water, and measuring the sensitivity in the water or carrying out sound pressure calibration.
Disclosure of Invention
The invention aims to provide a sound pressure calibration device of an underwater acoustic transducer, which is used for solving the problem that the existing underwater acoustic transducer needs to be filled with glue and sealed and then is subjected to water entry measurement when the sound pressure is calibrated.
In order to solve the technical problem, the invention provides an acoustic pressure calibration device for an underwater acoustic transducer, which comprises a tube body, a tube cover and a shockproof base;
the bottom of the tube body is fixedly connected with a sound source for emitting sound to form a sound field;
the lower end of the pipe cover is connected with two height adjusting rods;
and a testing rod is arranged between the two height adjusting rods and is used for placing a standard receiver and a tested transducer.
Optionally, the height adjusting rod is provided with a plurality of adjusting holes, and the adjusting holes are distributed on the height adjusting rod at the same intervals.
Optionally, the test rod penetrates through the adjusting holes at two ends and is fixed through a bolt; the standard receiver is fixedly connected to the testing rod, the transducer to be tested is temporarily fixed to the testing rod through glue, and the testing rod can test the sensitivity of the transducer to be tested in different sound fields through the adjusting holes fixed to different heights.
Optionally, a fixed support rod passes through the adjusting hole at the extreme end of the height adjusting rod, and the fixed support rod is used for maintaining the stability of the height adjusting rod.
Optionally, a metal balance block is arranged between the pipe body and the shockproof base, and the metal balance block can weaken the vibration generated by the sound source by utilizing the self gravity.
Optionally, the shockproof base main body is made of shockproof foam, and can play a role in sound insulation and vibration isolation.
Optionally, a sealing ring is arranged on a contact surface between the pipe body and the pipe cover, so that the inside of the pipe body is ensured to be in a sealed environment.
Optionally, the sound source is a low-pitch hi-fi loudspeaker, and the sound source is connected with an external power supply through a power line.
Optionally, the standard receiver and the transducer to be measured are connected with an external display instrument through a multi-core wire.
Optionally, the material of body is organic glass.
The invention provides an acoustic pressure calibration device of an underwater acoustic transducer, which comprises a tube body, a tube cover and a shockproof base; the bottom of the tube body is fixedly connected with a sound source for emitting sound to form a sound field; the lower end of the pipe cover is connected with two height adjusting rods; two place the test bar in the middle of the altitude mixture control pole, the test bar is used for placing standard receiver and surveyed the transducer, will standard receiver with the same horizontal plane in the body is put into to the transducer of being surveyed, through the contrast standard receiver with it can calibrate to be surveyed the transducer acoustic pressure in same sound field, compare with traditional transducer put into the method of aquatic test after the encapsulating, this underwater transducer acoustic pressure calibrating device is more scientific, and same transducer can carry out calibration many times, practices thrift financial resources and materials greatly.
Drawings
Fig. 1 is a schematic structural diagram of an acoustic pressure calibration apparatus for an underwater acoustic transducer provided in the present invention.
Detailed Description
The following describes a sound pressure calibration apparatus for an underwater acoustic transducer in further detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
The invention provides a sound pressure calibration device of an underwater acoustic transducer, which comprises a tube body 1, a tube cover 2 and a shockproof base 4, as shown in figure 1; the tube body 1 is made of organic glass, the density sound velocity of the organic glass is 7800 times of that of air, the requirement that the tube wall sound resistance required by a standing wave tube theory is far larger than that of a medium is met, and the tube body has perspective property compared with steel; the bottom of the pipe body 1 is fixedly connected with a sound source 3 which is used for emitting sound to form a sound field; the lower end of the pipe cover 2 is connected with two height adjusting rods 5; a test rod 6 is arranged between the two height adjusting rods 5, and the test rod 6 is used for placing a standard receiver 7 and a transducer 8 to be tested; a plurality of adjusting holes 10 are formed in the height adjusting rod 5, and the adjusting holes 10 are distributed on the height adjusting rod 5 at the same intervals; the test rod 6 penetrates through the adjusting holes 10 at the two ends and is fixed through bolts; standard receiver 7 fixed connection is in on the test bar 6, it fixes temporarily through glue to be surveyed transducer 8 on the test bar 6, test bar 6 is through being fixed in not co-altitude regulation hole 10 can test surveyed transducer 8 sensitivity in different sound fields, through the contrast standard receiver 7 with surveyed transducer 8 can calibrate at same sound field measurement value this surveyed transducer 8 acoustic pressure compares with the method that traditional transducer put into aquatic test after the encapsulating, and this underwater acoustic pressure transducer calibrating device is more scientific, and same transducer can carry out calibration many times, practices thrift financial resources and materials greatly to change through different height position can test the sensitivity of being surveyed transducer 8 in different sound fields.
Furthermore, a fixed support rod 11 passes through the adjusting hole 10 at the extreme end of the height adjusting rod 5, and the fixed support rod 11 is used for maintaining the stability of the height adjusting rod 5; a metal balance block 12 is arranged between the pipe body 1 and the shockproof base 4, and the metal balance block 12 can weaken the vibration generated by the sound source 3 by utilizing the self gravity; the main body of the shockproof base 4 is shockproof foam and can play a role in sound insulation and vibration isolation, so that the pipe body 1 is not influenced by a sound field to generate vibration; a sealing ring is arranged on the contact surface of the pipe body 1 and the pipe cover 2, so that the inside of the pipe body 1 is ensured to be in a sealed environment, and sound is prevented from being transmitted through air; the sound source 3 is a bass high-fidelity horn, the sound source 3 is connected with an external power supply through a power line 13, front sound waves emitted by the bass high-fidelity horn are completely reflected back by the tube cover, reflected waves and direct waves are in the same phase, an air standing wave field is formed in the tube, and the receiving sensitivity of the transducer 8 to be measured is measured by utilizing the standing wave field effect or sound pressure calibration is carried out; the standard receiver 7 and the transducer 8 under test are connected via a multicore wire 9 to an external display device, which may be a measurement amplifier, oscilloscope, filter, etc.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. The acoustic pressure calibrating device for the underwater acoustic transducer is characterized by comprising a tube body (1), a tube cover (2) and a shockproof base (4);
the bottom of the pipe body (1) is fixedly connected with a sound source (3) which is used for emitting sound to form a sound field;
the lower end of the pipe cover (2) is connected with two height adjusting rods (5);
and a testing rod (6) is arranged in the middle of the two height adjusting rods (5), and the testing rod (6) is used for placing a standard receiver (7) and a transducer (8) to be tested.
2. The acoustic pressure calibration device for an underwater acoustic transducer according to claim 1, wherein the height adjustment rod (5) is provided with a plurality of adjustment holes (10), and the adjustment holes (10) are distributed on the height adjustment rod (5) at the same intervals.
3. The acoustic pressure calibration apparatus for an underwater acoustic transducer according to claim 2, wherein said test rod (6) passes through said adjustment holes (10) at both ends and is fixed by bolts; standard receiver (7) fixed connection be in on test bar (6), measured transducer (8) pass through glue and fix temporarily on test bar (6), test bar (6) are through being fixed in not co-altitude regulation hole (10) can test measured transducer (8) sensitivity in different sound fields.
4. The acoustic pressure calibration apparatus for an underwater acoustic transducer according to claim 2, wherein a fixed support rod (11) passes through the adjusting hole (10) at the extreme end of the height adjusting rod (5), and the fixed support rod (11) is used for maintaining the stability of the height adjusting rod (5).
5. The acoustic pressure calibration device for underwater acoustic transducers according to claim 1, wherein a metal balance weight (12) is disposed between the tube (1) and the shock-proof base (4), and the metal balance weight (12) can attenuate the shock generated by the acoustic source (3) by its own weight.
6. The acoustic pressure calibration device of an underwater acoustic transducer according to claim 1, wherein the main body of the shock-proof base (4) is made of shock-proof foam, which can perform the functions of sound insulation and vibration isolation.
7. An acoustic pressure calibration device for an underwater acoustic transducer according to claim 1, characterized in that the contact surface between the tube body (1) and the tube cover (2) is provided with a sealing ring, so as to ensure that the inside of the tube body (1) is in a sealed environment.
8. An acoustic pressure calibration device for an underwater acoustic transducer according to claim 1, characterized in that the acoustic source (3) is a bass hi-fi horn and the acoustic source (3) is connected to an external power supply via a power cord (13).
9. An acoustic pressure calibration device for an underwater acoustic transducer according to claim 1, characterized in that said reference receiver (7) and said transducer under test (8) are connected to an external display device by means of a multicore wire (9).
10. An acoustic pressure calibration device for an underwater acoustic transducer according to claim 1, characterized in that the tube (1) is made of plexiglass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910984486.XA CN110708653A (en) | 2019-10-16 | 2019-10-16 | Acoustic pressure calibration device for underwater acoustic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910984486.XA CN110708653A (en) | 2019-10-16 | 2019-10-16 | Acoustic pressure calibration device for underwater acoustic transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110708653A true CN110708653A (en) | 2020-01-17 |
Family
ID=69200037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910984486.XA Pending CN110708653A (en) | 2019-10-16 | 2019-10-16 | Acoustic pressure calibration device for underwater acoustic transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110708653A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2512082Y (en) * | 2001-11-30 | 2002-09-18 | 中国科学院声学研究所 | Portable low-frequency sound field device |
| CN101813513A (en) * | 2010-01-07 | 2010-08-25 | 中国科学院半导体研究所 | Hydrophone testing device |
| CN102155985A (en) * | 2011-03-21 | 2011-08-17 | 中国科学院半导体研究所 | Device for testing high hydrostatic pressure and acoustic pressure sensitivity of hydrophone |
| CN102661781A (en) * | 2011-12-28 | 2012-09-12 | 天津市远海声学仪器有限公司 | Sensitivity testing apparatus for hydrophone |
| JP2017175577A (en) * | 2016-03-25 | 2017-09-28 | 株式会社小野測器 | Acoustic calibrator |
| CN108168683A (en) * | 2017-12-22 | 2018-06-15 | 中国船舶重工集团公司第七〇五研究所 | A kind of pressure-bearing type vector hydrophone measuring device |
| CN207585755U (en) * | 2017-11-08 | 2018-07-06 | 长沙湘计海盾科技有限公司 | A kind of far field sound pressure sensibility testing arrangement for acoustic array array element |
| CN108414625A (en) * | 2018-05-30 | 2018-08-17 | 广东工业大学 | A kind of acoustic characteristic measuring device and system |
| CN109443514A (en) * | 2018-09-13 | 2019-03-08 | 中国船舶重工集团公司第七〇五研究所 | A kind of sound pressure sensitivity calibration chamber and its test method |
-
2019
- 2019-10-16 CN CN201910984486.XA patent/CN110708653A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2512082Y (en) * | 2001-11-30 | 2002-09-18 | 中国科学院声学研究所 | Portable low-frequency sound field device |
| CN101813513A (en) * | 2010-01-07 | 2010-08-25 | 中国科学院半导体研究所 | Hydrophone testing device |
| CN102155985A (en) * | 2011-03-21 | 2011-08-17 | 中国科学院半导体研究所 | Device for testing high hydrostatic pressure and acoustic pressure sensitivity of hydrophone |
| CN102661781A (en) * | 2011-12-28 | 2012-09-12 | 天津市远海声学仪器有限公司 | Sensitivity testing apparatus for hydrophone |
| JP2017175577A (en) * | 2016-03-25 | 2017-09-28 | 株式会社小野測器 | Acoustic calibrator |
| CN207585755U (en) * | 2017-11-08 | 2018-07-06 | 长沙湘计海盾科技有限公司 | A kind of far field sound pressure sensibility testing arrangement for acoustic array array element |
| CN108168683A (en) * | 2017-12-22 | 2018-06-15 | 中国船舶重工集团公司第七〇五研究所 | A kind of pressure-bearing type vector hydrophone measuring device |
| CN108414625A (en) * | 2018-05-30 | 2018-08-17 | 广东工业大学 | A kind of acoustic characteristic measuring device and system |
| CN109443514A (en) * | 2018-09-13 | 2019-03-08 | 中国船舶重工集团公司第七〇五研究所 | A kind of sound pressure sensitivity calibration chamber and its test method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Gabrielson et al. | A simple neutrally buoyant sensor for direct measurement of particle velocity and intensity in water | |
| CN106124025A (en) | The calibrating installation of low noise vector hydrophone equivalence self noise acceleration spectrum level and calibration steps | |
| CN203275373U (en) | Nonmetal ultrasonic detector calibrating device | |
| JP2005274570A (en) | High frequency anechoic room with improved test board | |
| Bastyr et al. | Development of a velocity gradient underwater acoustic intensity sensor | |
| CN109443515A (en) | Test macro and method in a kind of small size hydrophone sensitivity air | |
| US4375679A (en) | Hydrophone acoustic response chamber | |
| CN111412974A (en) | System and method for calibrating co-vibration vector sensor | |
| CN110708653A (en) | Acoustic pressure calibration device for underwater acoustic transducer | |
| US2530383A (en) | Microphone testing device | |
| AU2015260938B2 (en) | Low-frequency receiver coil suspension system | |
| Teng et al. | Low-radioactivity ultrasonic hydrophone used in positioning system for Jiangmen Underground Neutrino Observatory | |
| Listewnik | A design of an acoustic coupler for calibration of hydrophones at low frequencies | |
| CN208636255U (en) | A kind of sound detecting pipe bending velocity of sound correcting device | |
| CN105444874B (en) | A kind of sound intersity measurement calibrating installation and method | |
| Malarkodi et al. | Design considerations and establishment of a low frequency hydrophone calibration setup using the principle of vibrating water column | |
| US8514655B2 (en) | Method and apparatus for measuring a hydrophone parameter | |
| CN108507667A (en) | Noise source specificity analysis based on scaled model | |
| US11953640B2 (en) | Pressure coupling chamber for hydrophone calibration | |
| Xiaoyong et al. | Improvements for seismometers testing on shake table | |
| CN205301362U (en) | Servo -type acceleration sensor based on infrared displacement sensor of difference formula | |
| Chen et al. | Discussion on some key measurement issues in calibration of an inertial vector receiver | |
| Duck | Ultrasonic metrology II—The history of the measurement of acoustic power and intensity using radiation force | |
| Chen et al. | Numerical simulation and dual experimental mapping of acoustic field generated by ultrasonic transducers | |
| Jia et al. | Calibration methods and facilities for vector receivers using a laser Doppler vibrometer in the frequency range 20 Hz to 10 kHz |
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 |
Application publication date: 20200117 |
|
| RJ01 | Rejection of invention patent application after publication |