CN104375134A - Common underwater acoustic measurement system - Google Patents
Common underwater acoustic measurement system Download PDFInfo
- Publication number
- CN104375134A CN104375134A CN201410606609.3A CN201410606609A CN104375134A CN 104375134 A CN104375134 A CN 104375134A CN 201410606609 A CN201410606609 A CN 201410606609A CN 104375134 A CN104375134 A CN 104375134A
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- Prior art keywords
- extension set
- signal
- transducer
- transmitting
- underwater sound
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/523—Details of pulse systems
Abstract
The invention discloses a common underwater acoustic measurement system mainly composed of a transmitting transducer set, a transmitting extension set, a receiving extension set and a display control extension set. The display control extension set is connected with the transmitting extension set and the receiving extension set. The transmitting extension set is connected with the transmitting transducer set and used for driving the transmitting transducer set. The transmitting transducer set is used for finishing underwater launching of acoustic signals in a working frequency band. The transmitting extension set is used for finishing generation of underwater acoustic measurement signals and driving the transmitting transducer set, the receiving extension set is used for finishing receiving, conditioning, collecting and storing of the underground acoustic signals, and the display control extension set is used for finishing parameter setting, transmitting and receiving controlling, state monitoring, received waveform displaying and target strength calculating. The common underwater acoustic measurement system is high in universality and performance cost ratio and convenient to carry and use, the modular design is adopted, and subsystems can be independently used.
Description
Technical field
The present invention relates to technical field of acoustics, in particular, relate to a kind of universal measurement system of underwater sound.
Background technology
Domestic existing underwater sound surveying instrument can be divided into noise-measuring instrument and echometric measurement instrument two class, and all belong to proprietary measurement frequency range, hardware and software resource cannot be reused, this brings the waste of cost to user, meanwhile, the dispersion of the special and function of measurement frequency range brings again the inconvenience in use to user.
Summary of the invention
The present invention is directed to the technical matters existed in above-mentioned prior art, provide a kind of general underwater sound measuring system, the target strength of carrying out target to be measured is under water measured, and can carry out Function Extension.The general underwater sound measuring system of the present invention, highly versatile, cost performance be high, be beneficial to portable use, modular design, and each subsystem can independently use.
In order to achieve the above object, the technical solution used in the present invention is as follows:
A kind of general underwater sound measuring system, primarily of transmitting transducer group, launch extension set, receive extension set and display and control extension set composition, described display and control extension set connects described transmitting extension set respectively and receives extension set, described transmitting extension set connects described transmitting transducer group, for driving described transmitting transducer group, described transmitting transducer group is mainly finished the work the underwater emission of acoustic signal in frequency band, described transmitting extension set mainly completes underwater sound measuring-signal and generates and drive transmitting transducer group, described reception extension set mainly completes the reception of underwater sound signal, conditioning, gather and store, described display and control extension set completes optimum configurations, launch and accept controls, condition monitoring, receive waveform display and target strength calculating.
Described transmitting extension set, reception extension set and display and control extension set are integrated in an industrial computer comprising master control borad, signal regulating panel, A/D collection plate and D/A change-over panel.
Described transmitting extension set, receive extension set and display and control extension set and be integrated in that one comprises master control borad, signal regulating panel, the industrial computer of A/D collection plate and one comprises in the industrial computer of master control borad, D/A change-over panel.
Described transmitting transducer group comprises 3 cover transducers, and the signal completed in 1kHz ~ 60kHz frequency band is launched.
Described 3 groups of transducers are respectively:
Transducer 1: bending disk transducer, the signal completed in 1kHz ~ 3kHz frequency band is launched;
Transducer 2: the edge of band baffle spells annulus transducer, the signal completed in 3kHz ~ 10kHz frequency band is launched;
Transducer 3: the edge of band baffle spells the vertical resonator transducer of the pipe transducer+employing band matching layer of annulus transducer+employing band baffle, and the signal completed in 10kHz ~ 60kHz frequency band is launched.
Described transmitting extension set forms primarily of signal source, digital-to-analogue conversion equipment, power amplifier, matching network,
Described reception extension set is primarily of signal condition equipment, signal collecting device, signal storage equipment composition.
Described signal condition equipment adopts low noise pre-amplification circuit, filtering circuit, rearmounted amplifying circuit and composition, described pre-amplification circuit adopts low noise instrument amplifier, enlargement factor is adjustable, described filtering circuit adopts low pass to add the form design of high pass, and filtered amplifying circuit can the gain of the whole circuit of flexible.
Described display and control extension set comprises for settling signal source relative parameters setting, power amplifier working state control, state modulator, Working Status Monitoring, carries out the transmitting extension set interface of the passage gating of matching network, and for the monitoring of settling signal source Received signal strength, the optimum configurations of signal condition equipment, passage gating, and the reception extension set interface of target strength result of calculation can be provided
General underwater sound measuring system provided by the present invention, major function measures the target strength of submarine target, and can carry out Function Extension, carries out general underwater sound measurement.The transmitting of active signal under water and the reception of underwater sound signal can be carried out.Highly versatile, is easy to carry, and modular design, each subsystem can independently use.
Native system adopts general off the shelf product on market to complete the signal transacting of native system and aobvious control task, full frequency band receiving transducer is adopted to solve frequency band common question, adopt portability design to be user-friendly to, adopt modularization and combine design, realize deciliter use of system.Imbody is as follows:
● highly versatile:
1) function is general: both can the noise of measurement target, again can the echo of measurement target;
2) frequency range is general: frequency range is 1kHz ~ 60kHz, nearly cover whole frequency ranges in conventional underwater acoustic measurement field;
● cost performance is high:
While guarantee properties of product and measuring accuracy, following method for designing is adopted to reduce production cost:
1) all adopt off the shelf product to produce to nautical receiving set, processor, for ease of maintenaince, reduce production cost;
2) transducer array adopts frequency-division section Integrated design, saves production material, reduces production cost;
● easy to carry:
System is divided into main frame, basic matrix and nautical receiving set, is positioned in the chest of three provided with wheels respectively, very convenient transport and carrying.
● modular design:
System have employed modular design, and each equipment can independently use.
Accompanying drawing explanation
Fig. 1 is the block diagram of system provided by the present invention;
Fig. 2 is the topology diagram of present system embodiment one;
Fig. 3 is the topology diagram of present system embodiment two;
Fig. 4 is the directional property measured drawing of edge spelling annulus transducer one embodiment of band baffle;
Fig. 5 launches extension set display control interface;
Fig. 6 receives extension set display control interface.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described in further detail.
Shown in Fig. 1, general underwater sound measuring system provided by the present invention, primarily of transmitting transducer group, launches extension set, reception extension set and display and control extension set composition.Composition and the function of each several part are as follows:
Transmitting transducer group: be made up of 3 cover transducers, the underwater emission of acoustic signal in frequency band of mainly finishing the work;
Transducer 1: bending disk transducer, the signal completed in 1kHz ~ 3kHz frequency band is launched;
Transducer 2: the edge of band baffle spells annulus transducer, the signal completed in 3kHz ~ 10kHz frequency band is launched;
Transducer 3: the edge of band baffle spells the vertical resonator transducer of the pipe transducer+employing band matching layer of annulus transducer+employing band baffle, and the signal completed in 10kHz ~ 60kHz frequency band is launched.
Launch extension set: launch extension set and be made up of signal source, digital-to-analogue conversion equipment, power amplifier, matching network, mainly complete the function that underwater sound measuring-signal generates, drives transmitting transducer group, wherein:
Signal source: the acoustic measurement signal needed for generating according to testing program;
Digital-to-analogue conversion equipment: the digital signal that signal source generates is converted to simulating signal, and the input signal as power amplifier amplifies;
Power amplifier: the signal that signal source generates is carried out power amplification, drives transmitting transducer group by matching network, completes the transmitting of measuring-signal;
Matching network: carry out the impedance matching between power amplifier and transducer group, ensures electro-acoustic conversion efficiency.
Receive extension set: receive extension set and be made up of signal condition equipment, signal collecting device, signal storage equipment.Mainly complete the reception of underwater sound signal, conditioning, collection, memory function.
Signal condition equipment: the amplification filtering function completing 8105 standard hydrophone Received signal strength;
Signal collecting device: the A/D sampling functions completing simulating signal;
Signal storage equipment: the memory function completing digital signal.
Display and control extension set: complete the functions such as optimum configurations, launch and accept control, condition monitoring, the display of reception waveform, target strength calculating.
General underwater sound measuring system topology diagram as shown in Figure 2 and Figure 3.Wherein Fig. 2 is the configuration of embodiment one, and Fig. 3 is the configuration of embodiment two.
In embodiment one, transmitting transducer group comprises: transmitting transducer 3 overlaps; Industrial computer one, comprises: master control borad 1 piece, signal regulating panel 2 pieces, A/D collection plate 1 piece, D/A change-over panel 1 piece; One, power amplifier; System power supply one.
In embodiment two, transmitting transducer group comprises: transmitting transducer 3 overlaps; Industrial computer two, industrial computer 1 comprises: master control borad 1 piece, signal regulating panel 2 pieces, A/D collection plate 1 piece; Industrial computer 2 comprises: master control borad 1 piece, D/A change-over panel 1 piece; One, power amplifier; System power supply one.
Below the detailed technology design proposal of each extension set of present system:
Transmitting transducer group:
Underwater emission transducer is a functional module of general underwater sound measuring system, mainly carries out the underwater emission of acoustic signal.In a certain frequency or frequency range, apply certain voltage drive by power amplifier etc. equipment to underwater emission transducer during use, realize the conversion from electric signal to acoustical signal, produce the acoustical signal to definite form and intensity, acoustical signal is outwards propagated in water.
The principle of work of underwater emission transducer is the voltage signal that signal source exports, through the modulation of equalizing circuit, input power amplifier, the output electric signal of power amplifier is through match circuit rear drive transducer, transducer specially changes mechanical oscillation signal into the electric signal of input, thus to radiated sound signal in water, complete the conversion of acoustical signal in electric signal to water.Coupling equalizing circuit changes the Frequency Response of transducer, within making the fluctuating of the transmitting voltage response in working frequency range be reduced to index request, and ensures certain electro-acoustic conversion efficiency.
Underwater emission transducer group comprises 3 cover transducers, and working frequency range covers 1 ~ 60kHz.Wherein transducer 1 is bending disk transducer, and the signal completed in 1kHz ~ 3kHz frequency band is launched; Transducer 2 is that the edge of band baffle spells annulus transducer, and the signal completed in 3kHz ~ 10kHz frequency band is launched; Transducer 3 is the vertical resonator transducer that the edge of band baffle spells that pipe transducer+employing band matching layer of baffle is with in annulus transducer+employing, and the signal completed in 10kHz ~ 60kHz frequency band is launched.
(1) 1kHz ~ 3kHz frequency range transducer
This frequency range transducer adopts bending disk transducer assemblies formula transducer, and the type transducer frequency is low, and size is little, lightweight, and bandwidth is relatively wide, is suitable as very much lightweight sound source.This programme can realize the sound source level of 195dB in band limits.Horizontal direction omnidirectional, vertical direction directive property is greater than 90 °.Physical size≤Ф 180mm × 1000mm, weight≤25kg.
(2) 3kHz ~ 10kHz low-frequency transducer design proposal
This frequency range adopts the edge of band baffle to spell annulus transducer form, and the type transducer volume is little, efficiency is high, the large and lighter in weight of power.In the embodiment of the present invention, transducer parameters is as following table 1:
Table 1
After adding baffle, can form horizontal directive tendency preferably, Fig. 4 is the directional property measured drawing of baffle transducer one embodiment, and frequency is higher, and directional property is better.
3kHz horizontal directive tendency: main lobe width 93.8 °, backward radiation-12dB;
6kHz horizontal directive tendency: main lobe width 68.7 °, backward radiation-18dB;
10kHz horizontal directive tendency: main lobe width 71.3 °, backward radiation-22dB.
(3) 10kHz ~ 20kHz transducer
This frequency range transducer adopts the tubular type transducer of band baffle, and tubular type transducer is modal a kind of transducer in underwater acoustic transducer, features simple structure, and efficiency is high, in the horizontal direction omnidirectional, and Antisoundbaffle also can be utilized to carry out positioning transceiving.In the embodiment of the present invention, transducer parameters is as following table 2:
Table 2
(4) 20kHz ~ 40kHz transducer
This frequency range transducer adopts the tubular type transducer of band baffle equally, and the transducer parameters of different size is as following table 3:
Table 3
(5) 40kHz ~ 60kHz transducer
This frequency range transducer adopts the vertical resonator transducer of band matching layer to realize, the type transducer architecture is simple, easy to process, efficiency is high, power is large, after adding matching layer, bandwidth is widened further, be widely used in the underwater sound and ultrasonic engineering as high power sound source at home and abroad at present, its frequency of operation is generally at about tens kHz.The transducer parameters of different size is as following table 4:
Table 4
Launch extension set:
Launch extension set to be made up of signal source, digital-to-analogue conversion equipment, power amplifier, matching network, mainly complete the function that underwater sound measuring-signal generates, drives transmitting transducer group.
(1) signal source
The function of signal source is the acoustic measurement signal needed for testing program generation.According to the test demand of this project, the signal that signal source produces, also can logging data file mainly through programming realization.User can be controlled signal source parameter by aobvious control interface.The major parameter of signal source is as follows:
Signal form: CW pulse;
Pulsewidth: can set;
The transmitting cycle: can set;
Centre frequency: 1KHz, 5KHz, 10KHz, 20KHz, 30KHz, 60KHz, other (can manually set in working band).
(2) digital-to-analogue conversion equipment:
The digital signal be mainly used in signal source generates converts simulating signal to, and the input signal as power amplifier amplifies.
(3) power amplifier:
Major function is that the signal that signal source generates is carried out power amplification, drives transmitting transducer group, complete the transmitting of measuring-signal by matching network.
Power amplifier radiating circuit part is made up of power amplifier power supply, power amplifier module, and power amplifier part adopts AC220V to power, and becomes power supply needed for power amplifier module by power supply module converts.User selects required signal frequency, form and size of launching on aobvious control interface, generates corresponding waveform, output to power amplifier module by Analog-digital Converter equipment by signal source.User can monitor power amplifier operation state on aobvious control interface, controls output power.
In the embodiment of the present invention, according to the transmitting source level demand of different transmitting transducer, determine that the major parameter of power amplifier is as follows:
Power supply: Alternating Current Power Supply: AC220V;
Operating frequency range: 20Hz ~ 60kHz;
Export a) sequential filming power (when dispelling the heat good): >=2000W;
B) dynamic range: >=60dB; Signal to noise ratio (S/N ratio): >=66dB;
C) power amplification efficiency: >=90%;
D) degree of distortion≤1%;
Reliability, maintainability, testability, security requirement
A) signal input and output and peripherals electrical isolation;
B) there is short circuit, overcurrent and overheating protection and auto-reset function;
C) power light and working station indicator is had;
D) pressure dangerous position in Van Gogh all has obvious safety notice;
(4) matching network:
Major function carries out the impedance matching between power amplifier and transducer group, ensures electro-acoustic conversion efficiency.Matching network is made up of power switch, power amplifier matching network.
Aobvious control interface can control power switch by master control borad, and select to open corresponding matching network, the signal that power amplifier module is exported is added on corresponding transducer.
In the embodiment of the present invention, its major parameter is: matching network efficiency: average >=80%.
Receive extension set:
Receive extension set to be made up of signal condition equipment, signal collecting device, signal storage equipment.Mainly complete the reception of underwater sound signal, conditioning, collection, memory function.
(1) signal condition equipment
Mainly complete the split-band amplification filtering function of 8105 standard hydrophone Received signal strength.Its main operational principle is the signal of signal condition equipment receiving hydrophone 8105, carry out amplifying, filtering, amplify again after, gathered by signal collecting device.
Signal condition equipment adopts low noise pre-amplification circuit, filtering circuit, rearmounted amplifying circuit and composition.In order to reduce circuit noise, pre-amplification circuit adopts low noise instrument amplifier, and enlargement factor is adjustable, and filtering part adopts low pass to add the form design of high pass, and filtered amplifying circuit can the gain of the whole circuit of flexible.User can carry out the gating of filtering channel by display and control software.
Signal condition equipment realizes mainly through board, and in the present embodiment, its major parameter is as follows:
Gain: 20dB, 40dB, 60dB (adjustable);
Bandwidth of operation: 1k ~ 3kHz, 3k ~ 10kHz, 10k ~ 20kHz, 20k ~ 40kHz, 40k ~ 60kHz;
Channel noise: <5uV;
Channel number: 2.
(2) signal collecting device
The A/D sampling functions of the simulating signal that main settling signal conditioning device exports.Select 16bit comparatively ripe on the market, hyperchannel A/D board realizes.In the present embodiment, its major parameter is as follows:
AD acquisition resolution: 16bit;
Sample frequency: 240kHz;
Channel noise: <5uV;
Channel number: 2.
(3) signal storage equipment
Mainly complete the memory function of digital signal.Industrial computer is utilized to carry the programming realization of hard disk by display and control software.And the playback function storing data can be completed.
Display and control extension set:
Complete the functions such as optimum configurations, launch and accept control, condition monitoring, the display of reception waveform, target strength calculating.Reference interface as shown in Figure 5, Figure 6.
(1) extension set interface is launched
User by this interface settling signal source relative parameters setting and power amplifier working state control, state modulator and Working Status Monitoring, and can carry out the passage gating of matching network.
(2) extension set interface is received
User can complete the monitoring of nautical receiving set Received signal strength, the optimum configurations of signal condition equipment, passage gating by this interface, and can provide the result of calculation of target strength.
Above-described embodiment only for illustration of the present invention, but and is not used in the protection domain limiting claim.Every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (9)
1. a general underwater sound measuring system, it is characterized in that, primarily of transmitting transducer group, launch extension set, receive extension set and display and control extension set composition, described display and control extension set connects described transmitting extension set respectively and receives extension set, described transmitting extension set connects described transmitting transducer group, for driving described transmitting transducer group, described transmitting transducer group is for the underwater emission of acoustic signal in frequency band of finishing the work, described transmitting extension set has been used for underwater sound measuring-signal and has generated and drive transmitting transducer group, described reception extension set is for completing the reception of underwater sound signal, conditioning, gather and store, described display and control extension set has been used for optimum configurations, launch and accept controls, condition monitoring, receive waveform display and target strength calculating.
2. general underwater sound measuring system according to claim 1, is characterized in that, described transmitting extension set, reception extension set and display and control extension set are integrated in an industrial computer comprising master control borad, signal regulating panel, A/D collection plate and D/A change-over panel.
3. general underwater sound measuring system according to claim 1, it is characterized in that, described transmitting extension set, receive extension set and display and control extension set and be integrated in that one comprises master control borad, signal regulating panel, the industrial computer of A/D collection plate and one comprises in the industrial computer of master control borad, D/A change-over panel.
4. general underwater sound measuring system according to claim 1, is characterized in that, described transmitting transducer group comprises 3 cover transducers, and the signal completed in 1kHz ~ 60kHz frequency band is launched.
5. general underwater sound measuring system according to claim 4, is characterized in that, described 3 groups of transducers respectively:
Transducer 1: adopt bending disk transducer, the signal completed in 1kHz ~ 3kHz frequency band is launched;
Transducer 2: adopt the edge of band baffle to spell annulus transducer, the signal completed in 3kHz ~ 10kHz frequency band is launched;
Transducer 3: adopt the edge of band baffle to spell the vertical resonator transducer of the pipe transducer+employing band matching layer of annulus transducer+employing band baffle, the signal completed in 10kHz ~ 60kHz frequency band is launched.
6. general underwater sound measuring system according to claim 1, is characterized in that, described transmitting extension set is primarily of signal source, digital-to-analogue conversion equipment, power amplifier, matching network composition.
7. general underwater sound measuring system according to claim 1, is characterized in that, described reception extension set is primarily of signal condition equipment, signal collecting device, signal storage equipment composition.
8. general underwater sound measuring system according to claim 7, it is characterized in that, described signal condition equipment adopts low noise pre-amplification circuit, filtering circuit, rearmounted amplifying circuit and composition, described pre-amplification circuit adopts low noise instrument amplifier, enlargement factor is adjustable, described filtering circuit adopts low pass to add the form design of high pass, and filtered amplifying circuit can the gain of the whole circuit of flexible.
9. general underwater sound measuring system according to claim 1, it is characterized in that, described display and control extension set comprises for settling signal source relative parameters setting, power amplifier working state control, state modulator, Working Status Monitoring, carries out the transmitting extension set interface of the passage gating of matching network, and for the monitoring of settling signal source Received signal strength, the optimum configurations of signal condition equipment, passage gating, and provide the reception extension set interface of target strength result of calculation.
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| CN106291564A (en) * | 2015-06-05 | 2017-01-04 | 中国科学院声学研究所 | A kind of cold seepage water body reflection sounding system and method |
| CN108333574A (en) * | 2017-12-22 | 2018-07-27 | 中国船舶重工集团公司第七〇五研究所 | A kind of underwater acoustic transducer of special space covering |
| CN109186752A (en) * | 2018-09-22 | 2019-01-11 | 天津大学 | Underwater sound signal acquisition, transmission and detection system based on graphics processor |
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| CN109186752A (en) * | 2018-09-22 | 2019-01-11 | 天津大学 | Underwater sound signal acquisition, transmission and detection system based on graphics processor |
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| CN104375134B (en) | 2018-01-26 |
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