CN108461021A - A kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing - Google Patents
A kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing Download PDFInfo
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Abstract
The invention discloses a kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing, including underwater sound case, tested energy converter, criteria receiver, auxiliary transmission energy converter, reciprocal transducer, rotating lifting laying mechanism, electronic test equipment and test software composition, the present invention is Underwater Acoustics Engineering Practice Teaching course indispensability experiment teaching instrument equipment, it can be in the confined space of laboratory, various underwater sound field environments are simulated in different frequency range, including low frequency standing wave field, medium-high frequency free field, reverberation field etc., so as to realize that the test of the underwater sound under different acoustic fields model and metering are tested, for marine acoustics, underwater sound energy converter, the object teaching of the professional theory knowledges such as sonar, theoretical model is verified.Present invention relates particularly to be it is a kind of can in 2 200kHz frequency ranges, in laboratory realize to marine acoustics, underwater acoustic transducer and sonar basic parameter carry out experimental teaching a kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing.
Description
Technical field
The invention belongs to experiment test fields, and in particular to be one kind can in 2-200kHz frequency ranges, in reality
It is comprehensive to a kind of multi-functional underwater sound parameter of marine acoustics, underwater acoustic transducer and sonar basic parameter progress experimental teaching to test indoor realization
Close experimental apparatus for testing.
Background technology
In the device that marine acoustics, underwater acoustic transducer and sonar basic parameter are tested in underwater sound field, it is primarily referred to as base
System is tested in the free field of experimental tank.Underwater sound experiment needs free found field environment, it can by outdoor large test site and
Indoor anechoic tank, is realized.Compared with outdoor large waters, water pool equipment has many advantages, such as that place is suitable and environment is controllable, and
And since there are larger background interferences in natural water area, it is difficult to reflect the rule that sound is propagated in water, it is sometimes even difficult
To implement or cost is too high, so water pool equipment especially anechoic tank, often it is used to simulate wide waters in the lab complete
At the underwater sound experiment for being difficult to even carry out under real conditions.For this purpose, measurement pond, especially anechoic tank, and its
The construction of experiments supporting equipment just seems very necessary.
At present system, the survey that can generally carry out in this large-scale experiment pond are tested in the pond of related underwater sound unit
The lower-frequency limit for measuring work is 1000Hz or so.In addition, also having water tank (sink), sound pipe (or coupler) in underwater acoustic measurement field
Deng measurement space, wherein the former can be only done high frequency measurement work；The latter can be only done low frequency measurement work, and this two
It is typically only capable to carry out the sensitivity calibration work to standard hydrophone in kind space.
In conclusion present invention research marine acoustics, underwater acoustic transducer and sonar basic parameter carry out the experiment of experimental teaching
Device can carry out multinomial underwater sound experiment in 2-200kHz frequency ranges, and not only function is strong, at low cost, but also is fresh at present
Some test systems.
Invention content
The purpose of the present invention is to provide a kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing, can be in 2-200kHz
In frequency range, the experiment that experimental teaching is carried out to marine acoustics, underwater acoustic transducer and sonar basic parameter is realized in laboratory
Device.
The object of the present invention is achieved like this：
A kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing, by underwater sound case 1, tested energy converter 2, criteria receiver
3, auxiliary transmission energy converter 4, reciprocal transducer 5, rotating lifting laying mechanism 6, electronic test equipment 7 and test software 8 form, described
Underwater sound case 1 be made of babinet 1.1, deep floor 1.2, discharge outlet 1.3 and wedge absorber 1.4；The rotating lifting laying mechanism 6
Track 6.1 and its first is moved horizontally including the directions x and controls motor 6.2, and the directions y move horizontally the control electricity of track 6.3 and second
Machine 6.4, the directions z are vertically moved up or down bar 6.5 and third controls motor 6.6, and the wheel disc 6.7 and the 4th that rotates in a circumferential direction controls motor 6.8, the
One mounting bracket 6.9, the first mounting bracket 6.10, the first mounting bracket 6.11, the first mounting bracket 6.12；The rotating lifting
Laying mechanism 6 is mounted on the deep floor 1.2 of underwater sound case 1；The tested energy converter 2, criteria receiver 3, auxiliary transmission
Energy converter 4 and reciprocal transducer 5 are fixed on by connecting bolt on rotating lifting laying mechanism 6；The electronic test equipment 7 includes
Signal source 7.1, power amplifier 7.2, match circuit 7.3, Current Voltage sampler 7.4 and preamplifier 7.5, measurement are put
Big device 7.6, filter 7.7, collector 7.8 and computer 7.9；The test software 8 includes underwater acoustic transducer electroacoustic performance
Test software 8.1, underwater sound propagation rule test software 8.2, sonar equation parameter testing software 8.3 form；Described is tested
Energy converter 2, criteria receiver 3, auxiliary transmission energy converter 4 and reciprocal transducer 5 are connect by cable with electronic test equipment 7,
Test data is stored in computer 7.9, is handled by test software 8.
A kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing of the present invention, the size of the underwater sound case 1 exist
Meet free-field condition in 50-200kHz frequency ranges, reverberation field condition is met in 2-50kHz frequency ranges.
A kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing of the present invention, the tested energy converter 2 include receiving
Probe 2.1, first flange disk 2.2, the ends the first output cable 2.3 and first output BNC 2.4；The tested energy converter 2 is pacified
In the first mounting bracket 6.9.
A kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing of the present invention, the criteria receiver 3 connect including standard
Receive probe 3.1, second flange disk 3.2, the ends the second output cable 3.3 and second output BNC 3.4；The criteria receiver 3 is pacified
In the second mounting bracket 6.10；The criteria receiver 3 meets standard hydrophone requirement.
A kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing of the present invention, the auxiliary transmission energy converter 4 include hair
Penetrate probe 4.1, third ring flange 4.2, third output cable 4.3 and the ends third output BNC 4.4；The auxiliary transmission changes
Energy device 4 is mounted in third mounting bracket 6.11, and the auxiliary transmission energy converter 4 meets stability and property in working band
It makes an uproar than requiring.
A kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing of the present invention, the reciprocal transducer 5 are changed including reciprocity
It can the 5.1, the 4th ring flange 5.2 of device probe, the ends the second output cable 5.3 and the 4th output BNC 5.4；The reciprocal transducer 5
Mounted on the 4th mounting bracket 6.12, the reciprocal transducer 5 meets reciprocal type and linear requirements.
A kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing of the present invention calculates the underwater sound by test software 8
The sensitivity of energy converter sends response, directive property parameter；It is strong that the sound field velocity of sound, propagation loss, target are calculated by test software 8
Spend parameter, sonar equation relevant parameter.
The beneficial effects of the present invention are：
1, powerful, widely used.The device can meet all related underwater sound courses in underwater sound undergraduate course stage
Experiment need, forgive this Key curriculum Basic of Acoustics, marine acoustics, underwater acoustic transducer and four subject of sonar technology and be related to
Content；
2, technology maturation, reliable and stable.The device relies on underwater sound test tank study on construction achievement and relevant underwater sound section
It is ground into fruit design to complete, be passed through using advanced underwater acoustic transducer and its mating test equipment using acoustic pulses measuring technology
The teaching application attestation of last decade, the device are reliable and stable, technologically advanced suitable for practical teaching；
3, it constitutes at low cost, easy to operate.The designing technique of the device derives from experimental tank, but considers teaching characteristic letter
System composition is changed, operation difficulty is reduced under the premise of retaining its function, has been more suitable for that beginner uses and teaching is answered；
4, safe.Compared with experimental tank, various experimental projects are completed in the apparatus, greatly reduce safety
Risk.
Description of the drawings
Fig. 1 is the single unit system schematic diagram of the present invention；
Fig. 2 is the underwater sound case schematic diagram of the present invention；
Fig. 3 is the tested energy converter schematic diagram of the present invention；
Fig. 4 is the criteria receiver schematic diagram of the present invention；
Fig. 5 is the auxiliary transmission energy converter schematic diagram of the present invention；
Fig. 6 is the reciprocal transducer schematic diagram of the present invention；
Fig. 7 is the rotating lifting laying mechanism schematic diagram of the present invention；
Fig. 8 is the electronic test equipment schematic diagram of the present invention；
Fig. 9 is the test software schematic diagram of the present invention.
Specific implementation mode
It illustrates below in conjunction with the accompanying drawings for a more detailed description to the present invention.
The purpose of the present invention is to provide a kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing, can be in 2-200kHz
In frequency range, the experiment that experimental teaching is carried out to marine acoustics, underwater acoustic transducer and sonar basic parameter is realized in laboratory
Device.
In conjunction with shown in Fig. 1-8, a kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing of the present invention by underwater sound case 1, is tested
Try energy converter 2, criteria receiver 3, auxiliary transmission energy converter 4, reciprocal transducer 5, rotating lifting laying mechanism 6, electronic test equipment 7
And test software 8 forms；Underwater sound case 1 as described above is by babinet 1.1, deep floor 1.2, discharge outlet 1.3 and wedge absorber 1.4
Composition；Babinet 1.1 is that the test space is to disclosure satisfy that the rectangle case of certain sound-hard condition by fiberglass processing and fabricating
Body, is full of aqueous medium in babinet, and sound wave is propagated in babinet 1.1 in the presence of regularity, 1.1 wall surface of babinet covering sound-absorbing material, with
Reduce influence of the wall surface sound wave reflection to sound field；The deep floor 1.2 is formed by stainless steel material processing and fabricating；The underwater sound
Testing transducer includes criteria receiver 3, tested energy converter 2 and auxiliary transmission energy converter 4, reciprocal transducer 5, for establishing sound
Field and reception acoustical signal meet each basic parameter test needs.
In conjunction with shown in Fig. 2, the underwater sound case 1 is by babinet 1.1, deep floor 1.2, discharge outlet 1.3 and wedge absorber 1.4
Composition；Before measurement, needs to be mounted on wedge absorber 1.4 on the side wall of babinet 1.1, while being full of water in water tank, measure knot
Shu Hou bleeds off water from discharge outlet 1.3, and dry, prevention in case is kept to get rusty, improve service life.
In conjunction with shown in Fig. 3, the tested energy converter 2 includes receiving transducer 2.1, the output of first flange disk 2.2, first
Cable 2.3 and first exports the ends BNC 2.4；The tested energy converter 2 is mounted in the first mounting bracket 6.9.
In conjunction with shown in Fig. 4, the criteria receiver 3 is defeated including standard receiving transducer 3.1, second flange disk 3.2, second
Go out cable 3.3 and second and exports the ends BNC 3.4；The criteria receiver 3 is mounted in the second mounting bracket 6.10；The mark
Quasi- receiver 3 meets standard hydrophone requirement.
In conjunction with shown in Fig. 5, the auxiliary transmission energy converter 4 is defeated including transmitting probe 4.1, third ring flange 4.2, third
Go out cable 4.3 and the ends third output BNC 4.4；The auxiliary transmission energy converter 4 is mounted in third mounting bracket 6.11,
The auxiliary transmission energy converter 4 meets stability and to-noise ratio requirement in working band.
In conjunction with shown in Fig. 6, the reciprocal transducer 5 includes reciprocal transducer the 5.1, the 4th ring flange 5.2, second of probe
Output cable 5.3 and the 4th exports the ends BNC 5.4；The reciprocal transducer 5 is mounted on the 4th mounting bracket 6.12, described
Reciprocal transducer 5 meets reciprocal type and linear requirements.
In conjunction with shown in Fig. 7, the rotating lifting laying mechanism 6 moves horizontally the control electricity of track 6.1 and its first including the directions x
Machine 6.2, the directions y move horizontally track 6.3 and second and control motor 6.4, and the directions z are vertically moved up or down bar 6.5 and third controls motor
6.6, the wheel disc 6.7 and the 4th that rotates in a circumferential direction controls motor 6.8, the first mounting bracket 6.9, the first mounting bracket 6.10, first peace
Fill holder 6.11, the first mounting bracket 6.12；According to measuring condition requirement, track 6.1 and its first is moved horizontally using the directions x
Motor 6.2 is controlled, the directions y move horizontally track 6.3 and its second and control motor 6.4, and the directions z are vertically moved up or down bar 6.5 and third
Motor 6.6 is controlled, tested energy converter 2, criteria receiver 3, auxiliary transmission energy converter 4,5 cloth of reciprocal transducer are put into water respectively
Corresponding position in case, and 6.8 adjustment direction of motor can be controlled by rotating circumferential rotation roulette 6.7 and its 4th, and start
Test.
In conjunction with shown in Fig. 8, the electronic test equipment 7 includes signal source 7.1, power amplifier 7.2, match circuit
7.3, Current Voltage sampler 7.4 and preamplifier 7.5, measuring amplifier 7.6, filter 7.7, collector 7.8 and meter
Calculation machine 7.9；When measurement, first by signal source 7.1, power amplifier 7.2, match circuit 7.3, Current Voltage sampler 7.4 and auxiliary
The third of transmitting transducer 4 is helped to export the 4th ends output BNC 5.4 and 7.8 He of collector at the ends BNC 4.4 or reciprocal transducer 5
Computer 7.9 connects；Again by the first ends output BNC 2.4 of tested energy converter 2 or the second ends output BNC of criteria receiver 3
3.4 or reciprocal transducer 5 third output BNC ends 5.4, with preamplifier 7.5, measuring amplifier 7.6, filter 7.7,
Collector 7.8 and computer 7.9 connect；Finally signal source 7.1, power amplifier 7.2, match circuit 7.3, Current Voltage are taken
Sample device 7.4 and preamplifier 7.5, measuring amplifier 7.6, filter 7.7, collector 7.8 and computer 7.9 power supply beat
It opens, send out instruction by computer 7.9 sends out measured signal from signal source 7.1, and energy amplification is carried out through power amplifier 7.2,
Impedance matching is carried out with circuit 7.3, auxiliary transmission energy converter 4 is sent into or reciprocal transducer 5 is formed to 1.1 space radiation of water tank
The sound field needed is tested, while the acoustical signal in sound field is received by tested energy converter 2 or criteria receiver 3, reciprocal transducer 5,
And be converted into electric signal be sent into preamplifier 7.5 matching, measuring amplifier 7.6 amplification, filter 7.7 filter out noise, counting
Signal source 7.1 is sent out measured signal, the signal that power amplifier 7.2 amplifies, electric current electricity by the lower collector 7.8 of the control of calculation machine 7.9
The signal for pressing sampler 7.4 to sample, and filtered out through the matching of preamplifier 7.5, the amplification of measuring amplifier 7.6, filter 7.7
The signal acquisition of noise is stored in computer 7.9.
Finally, the test software 8 in computer 7.9 is opened, corresponding software for calculation is selected according to corresponding test request,
Including underwater acoustic transducer electroacoustic performance test software 8.1, it can calculate and provide the sensitivity of underwater acoustic transducer, send response and refer to
The electroacoustic performances parameter such as tropism, phase；Underwater sound propagation rule test software 8.2, can calculate and provide the velocity of sound and sound ray relationship, sound
Propagation loss curve, underwater ambient noise value, target intensity value etc.；Sonar equation parameter testing software 8.3, can calculate and provide
Sound source level, propagation loss, ambient noise level, reverberation level, directional gain, and verify main passive sonar equation etc..
In conjunction with shown in Fig. 9, the test software 8 includes underwater acoustic transducer electroacoustic performance test software 8.1, underwater sound propagation
Rule test software 8.2, sonar equation parameter testing software 8.3 form；The electronic test equipment 7 and test software 8 can
To realize signal excitation and power amplification to transmitter, and amplification, filtering, acquisition and the processing etc. of the docking collection of letters number.
Tested energy converter 2, criteria receiver 3, auxiliary transmission energy converter 4 and the reciprocal transducer 5 passes through cable
It is connect with electronic test equipment 7, test data is stored in computer 7.9, is handled by test software 8.
The main theoretical basis of the reform of Chinese economic structure of the present invention：By the high frequency free field calibration method for utilizing pulse technique and utilize space average
The integrated use of the low frequency reverberation field calibration method of technology.
The first utilizes the high frequency free field calibration method of pulse technique.
Because in water tank free-field condition be difficult be ideal, at this moment can establish one using sinusoidal impulse signal
It disclosure satisfy that the environment of general free field measuring condition, this measuring technology are referred to as pulse audio technology.
First, it is the selection of pulse width τ, correctly selection is that τ is made to meet all conditions.These conditions are as follows：
(1) τ must be sufficiently large, and should ensure that can measure under steady-state vibration state.This is that signal is made to reach in time
Requirement to stable state to τ, i.e.,：
Wherein：
η=ξ/ξmIt is the percentage of the vibration amplitude that reaches relative to stable vibration amplitude；Q0、f0It is the quality of energy converter
Factor and resonant frequency；F is measurement frequency.
(2) τ must be sufficiently large, should ensure that pulse has sufficiently long action time to energy converter, can make between its each section
Fully interaction.This practical listing makes the requirement that energy converter space reaches low-profile to τ.For this purpose, τ should meet the following conditions：
Wherein, full-size of the D energy converters on Acoustic Wave Propagation direction；The free field velocity of sound in c water.
(3) τ cannot be excessive, should ensure that stroke is less than through sound path and reflection sound path recently in the water corresponding to pulse width
Difference, in order to avoid the reflection from boundary or barrier to direct sound wave generate interference, this requirement：
In formula：The several journeys of R roundtrips, d go directly sound path.
(4) τ cannot be excessive, should ensure that emit and receive energy converter size it is larger so that the sound reflecting between them not
When negligible, the influence of reflection can be avoided.This requires τ to meet：
Wherein, d is the spacing between two energy converters.
Secondly, it is correct strobe pulse repetition period T.
To T, there are two types of opposite requirements in underwater acoustic measurement, on the one hand require T smaller, i.e., repetition rate is high, with easy
In acquisition, reading or record；On the other hand it requires T more greatly, makes boundary reflected sound or the reverberation sound energy before next pulse arrival
It completely disappears and decays to permissible value.Actually measure in, should according to instrument equipment, waters size, eliminate the noise whether and transducing
Situations such as arrangement of device, consider determining T values, T should meet the following conditions：
Wherein T60The reverberation time in pond, i.e., the time for the 60dB that decays from end-of-pulsing to sound level.
When meeting conditions above, hydrophone is before receiving next direct pulse sound, all reflections of previous pulse
Sound all decayed to it is smaller 40dB or more than direct sound wave, at this moment influence of the reflected sound to direct sound wave measured value be not more than 0.1dB.
When little for tank size, T60Bigger, i.e. the reverberation time is long.In order to meet the requirement of formula (5), pulse
Repetition period also should be longer.This will bring adverse effect and inconvenience to measurement.In order to avoid such case, pulse sounding is being used
When amount technology, pool wall is also answered to make necessary noise elimination processing.
Second of low frequency reverberation field calibration method using space average technology.
Sound field potential function particular solution is in water tank：
Show that there is a large amount of normal modes in the sound field.
What the reflected sound for direct sound wave and water tank the wall surface reflection that the sound field in water tank is sent out by transmitting transducer formed,
Close to the position of transmitting transducer, the effect of direct sound wave is more than reflected sound, in the position far from transmitting transducer, the work of reflected sound
With more than direct sound wave, with the increase of range transmission energy converter distance, the effect of direct sound wave is gradually reduced, the effect of reflected sound by
Cumulative big, at the direct sound wave critical localisation equal with reflected sound, the distance of range transmission energy converter is exactly reverberation radius, is also cried
Reverberation distance.Only except the reverberation radius of transmitting transducer, it can just be remembered as reverberant field.Reverberation radius and water tank
There are relationship in volume and reverberation time：
Wherein, T60 is the reverberation time in pond, can take pulse-break method to measure the reverberation time in water tank.
The present invention advantage be：(1) powerful, widely used.The device can meet the underwater sound undergraduate course stage
The experiment of all correlation underwater sound courses needs, and forgives this Key curriculum Basic of Acoustics, marine acoustics, underwater acoustic transducer and sonar
The content that four subject of technology is related to；(2) technology maturation, reliable and stable.The device rely on underwater sound test tank study on construction at
Fruit and the design of relevant underwater sound scientific achievement are completed, using acoustic pulses measuring technology, using advanced underwater acoustic transducer and its
Mating test equipment, the teaching application attestation by last decade：The device is reliable and stable, technologically advanced suitable for practical teaching；(3)
It constitutes at low cost, easy to operate.The designing technique of the device derives from experimental tank, but considers that teaching characteristic simplifies system group
At reducing operation difficulty under the premise of retaining its function, be more suitable for beginner and use and impart knowledge to students application.(4) safe.
Compared with experimental tank, various experimental projects are completed in the apparatus, greatly reduce security risk.
The above, a kind of specific implementation mode only of the invention, but not as limiting the scope of the invention,
Any one skilled in the art is in the technical scope pointed by the present invention, according to the technique and scheme of the present invention and
Its inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing is received by underwater sound case (1), tested energy converter (2), standard
Device (3), auxiliary transmission energy converter (4), reciprocal transducer (5), rotating lifting laying mechanism (6), electronic test equipment (7) and test are soft
Part (8) forms, it is characterised in that：The underwater sound case (1) is by babinet (1.1), deep floor (1.2), discharge outlet (1.3) and inhales
Sound wedge (1.4) forms；The rotating lifting laying mechanism (6) includes that the directions x move horizontally track (6.1) and its first control electricity
Machine (6.2), the directions y move horizontally track (6.3) and the second control motor (6.4), the directions z are vertically moved up or down bar (6.5) and third
Control motor (6.6), the wheel disc that rotates in a circumferential direction (6.7) and the 4th control motor (6.8), the first mounting bracket (6.9), the first installation
Holder (6.10), the first mounting bracket (6.11), the first mounting bracket (6.12)；The rotating lifting laying mechanism (6) is mounted on
On the deep floor (1.2) of underwater sound case (1)；The tested energy converter (2), criteria receiver (3), auxiliary transmission energy converter
(4) and reciprocal transducer (5) is fixed on by connecting bolt on rotating lifting laying mechanism (6)；Electronic test equipment (7) packet
Include signal source (7.1), power amplifier (7.2), match circuit (7.3), Current Voltage sampler (7.4) and preamplifier
(7.5), measuring amplifier (7.6), filter (7.7), collector (7.8) and computer (7.9)；The test software (8)
It is surveyed including underwater acoustic transducer electroacoustic performance test software (8.1), underwater sound propagation rule test software (8.2), sonar equation parameter
Software (8.3) is tried to form；Tested energy converter (2), criteria receiver (3), auxiliary transmission energy converter (4) and the reciprocity is changed
Energy device (5) is connect by cable with electronic test equipment (7), and test data is stored in computer (7.9), passes through test software
(8) it is handled.
2. a kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing according to claim 1, it is characterised in that：Described
The size of underwater sound case (1) meets free-field condition in 50-200kHz frequency ranges, meets in 2-50kHz frequency ranges mixed
Ring field condition.
3. a kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing according to claim 1, it is characterised in that：Described
Tested energy converter (2) includes that receiving transducer (2.1), first flange disk (2.2), the first output cable (2.3) and first are defeated
Go out the ends BNC (2.4)；The tested energy converter (2) is mounted in the first mounting bracket (6.9).
4. a kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing according to claim 1, it is characterised in that：Described
Criteria receiver (3) includes standard receiving transducer (3.1), second flange disk (3.2), the second output cable (3.3) and second
It exports the ends BNC (3.4)；The criteria receiver (3) is mounted in the second mounting bracket (6.10)；The criteria receiver (3)
Meet standard hydrophone requirement.
5. a kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing according to claim 1, it is characterised in that：Described
Auxiliary transmission energy converter (4) includes transmitting probe (4.1), third ring flange (4.2), third output cable (4.3) and third
It exports the ends BNC (4.4)；The auxiliary transmission energy converter (4) is mounted in third mounting bracket (6.11), auxiliary hair
It penetrates energy converter (4) and meets stability and to-noise ratio requirement in working band.
6. a kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing according to claim 1, it is characterised in that：Described
Reciprocal transducer (5) includes reciprocal transducer probe (5.1), the 4th ring flange (5.2), the second output cable (5.3) and the
The four outputs ends BNC (5.4)；The reciprocal transducer (5) is mounted on the 4th mounting bracket (6.12), the reciprocal transducer
(5) meet reciprocal type and linear requirements.
7. a kind of multi-functional underwater sound parametric synthesis experimental apparatus for testing according to claim 1, it is characterised in that：Pass through survey
Software (8) is tried to calculate the sensitivity of underwater acoustic transducer, send response, directive property parameter；Sound field sound is calculated by test software (8)
Speed, propagation loss, target strength parameter, sonar equation relevant parameter.
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| CN112146745A (en) * | 2020-09-09 | 2020-12-29 | 中国船舶重工集团公司第七一五研究所 | Method for accurately measuring reverberation time of pool |
| CN112083402A (en) * | 2020-09-15 | 2020-12-15 | 哈尔滨工程大学 | Underwater target sailing detection experimental method under pool condition |
| CN112904427A (en) * | 2021-01-15 | 2021-06-04 | 哈尔滨工程大学 | Underwater monitoring facility site selection prediction method and system |
| CN112904427B (en) * | 2021-01-15 | 2021-12-07 | 哈尔滨工程大学 | Underwater monitoring facility site selection prediction method and system |
| CN113658490A (en) * | 2021-08-20 | 2021-11-16 | 厦门大学 | Science and education underwater sound demonstration platform |
| CN114125683A (en) * | 2021-11-23 | 2022-03-01 | 海鹰企业集团有限责任公司 | Underwater low-frequency sound pressure field testing device and method formed by excitation of loudspeaker |
| CN114125683B (en) * | 2021-11-23 | 2023-11-21 | 海鹰企业集团有限责任公司 | Device and method for testing underwater low-frequency sound pressure field formed by excitation of loudspeaker |
| CN114509767A (en) * | 2022-02-15 | 2022-05-17 | 交通运输部天津水运工程科学研究所 | Underwater imaging sonar measurement calibration device and method |
| CN115523999A (en) * | 2022-11-28 | 2022-12-27 | 广州赛宝计量检测中心服务有限公司 | Particle collision noise detection transducer sensitivity measuring method and system |
| CN115523999B (en) * | 2022-11-28 | 2023-03-10 | 广州赛宝计量检测中心服务有限公司 | Particle collision noise detection transducer sensitivity measuring method and system |
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