CN205566317U - A relay node for cognitive underwater acoustic - Google Patents
A relay node for cognitive underwater acoustic Download PDFInfo
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- CN205566317U CN205566317U CN201620326938.7U CN201620326938U CN205566317U CN 205566317 U CN205566317 U CN 205566317U CN 201620326938 U CN201620326938 U CN 201620326938U CN 205566317 U CN205566317 U CN 205566317U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model discloses a relay node for cognitive underwater acoustic, including underwater acoustic transducer, an electronic switch who is connected with underwater acoustic transducer, an electronic switch is connected with receiving filter or transmitting filter, the 2nd electronic switch who is connected with the receiving filter, the 2nd electronic switch is connected with wide band signal amplification circuit, perhaps the 2nd electronic switch is connected with processing circuit and energy detection circuitry, the marine organism cry identification circuit that is connected with processing circuit, processing circuit still is connected with wide band signal amplification circuit, wide band signal amplification circuit is connected with the transmitting filter, the core processor that is connected with an electronic switch, the 2nd electronic switch, processing circuit, marine organism cry identification circuit, energy detection circuitry, wide band signal amplification circuit respectively. It possesses frequency spectrum perception and cooperation relaying function, can switch to enlarge to forward or decode and forward two kinds of relayings mode of enlargeing.
Description
Technical field
This utility model relates to a kind of underwater acoustic communication equipment, particularly relates to a kind of via node for cognitive underwater sound communication.
Background technology
In underwater sound communication system, owing to absorbing, scattering, reflecting, the effect of the factor such as geometry extension, high frequency sound wave propagation attenuation in water is the biggest.Research shows, the change of frequency and the amplitude attenuation factor exponent function relation of its sound intensity.When the frequency launched is the highest, transmission range is the most remote, then the signal amplitude received is the least.The available frequency band of underwater sound communication is very limited, and common underwater sound communication frequency band covers low-frequency range
0～15kHz, Mid Frequency 15～150kHz, high band 150～1500kHz, the frequency of the usual SC service ceiling of system 10～100KHz of operating distance l～10km, at this moment system works in shallow sea more.The first-selected frequency range of telecommunication is 0～20kHz.Additionally, due to the spread speed that sound wave is in water be about 1500 meter per seconds, only electromagnetic wave spread speed in atmosphere 200,000/, therefore with land communication compared with, propagation delay under water is the biggest.Along with the further development of water sound communication technique, the demand of subsurface communication is increased by people day by day, and limited communication band will necessarily bring the problem that frequency spectrum resource is nervous.Therefore, how reasonable distribution frequency spectrum resource under water, improve the availability of frequency spectrum, just become the key issue improving underwater sound communication performance.
Cognitive radio technology is a kind of intelligent communication new technique proposed in terrestrial radio Communication Studies in recent years.It is in dynamic spectrum access mode, makes unlicensed band user (the most secondary user) and authorized frequency bands user (also referred to as primary user) share spectrum resources, thus improves the utilization rate of frequency spectrum.The basic thought of cognitive communications is to allow wireless terminal adjust the transmission parameter of oneself by the history of wireless environment around perception and the present situation, use most suitable Radio Resource (including frequency, modulation system, transmitting power etc.) to complete to be wirelessly transferred, relate generally to frequency spectrum perception technology and spectrum analysis, determine, distribute and the technology such as dynamic spectrum resource management such as mobile.Owing to the thought of cognitive radio can allow wireless terminal utilize frequency spectrum resource efficiently, adapt to changeable wireless environment, therefore in band limiting, the subsurface communication of circumstance complication, the particularly subsurface communication of multi-user, two-forty, there is the biggest development potentiality.
Current underwater sound node is used for underwater sound sensing, monitoring or military communication, and its working frequency range is often fixed, and the underwater sound frequency range in specified sea areas is the most occupied, it will hinder the layout of follow-up Underwater Detection node with the generation that communicates.Meanwhile, halobiontic existence, while communication, not yet in view of detecting halobiontic communications status, may be impacted by existing underwater sound node.So far, the underwater acoustic communication equipment being now able to really solve the problems referred to above is not gone out.
Utility model content
In order to solve existing underwater acoustic communication equipment cannot flexible access communication spectrum cavity, frequency spectrum resource utilization rate is the highest under water, underwater sound communication process may be to problems such as halobiontic existence impact, this utility model provides one and calls identification technology based on energy measuring and marine organisms, detection primary user's communication, possess frequency spectrum perception and cooperating relay function, it is possible to switching amplification forwarding or decoding forward the cognitive underwater sound communication via node of two kinds of relaying amplification modes.
In order to solve the problems referred to above, technical solution adopted in the utility model is: a kind of via node for cognitive underwater sound communication, it is characterised in that including:
For launching and receive the underwater acoustic transducer of underwater sound signal；
Being connected with underwater acoustic transducer, for selecting the first electrical switch of node working method, described first electrical switch is connected with receiving filter or transmitting filter；
Being connected with receiving filter, for the second electrical switch selecting signal to flow to, described second electrical switch is connected with broadband signal amplifying circuit, or described second electrical switch is connected with signal processing circuit and energy detection circuit；
The marine organisms cry identification circuit being connected with signal processing circuit；
Described signal processing circuit is also connected with broadband signal amplifying circuit；
Described broadband signal amplifying circuit is connected with transmitting filter；
The core processor being connected with the first electrical switch, the second electrical switch, signal processing circuit, marine organisms cry identification circuit, energy detection circuit, broadband signal amplifying circuit respectively.
Further technical scheme is:
Described underwater acoustic transducer is piezoelectric transducer, and operating frequency range is 1k～100kHz.
Described signal processing circuit includes analog-digital converter, the fast Fourier transformer being sequentially connected with, and described device is controlled by described core processor.
Described signal processing circuit also includes demodulator, decoder, encoder and the manipulator being sequentially connected with, and described device is controlled by described core processor.
Described marine organisms cry identification circuit includes audio fingerprint data memorizer and the recognition processor being sequentially connected with, there is the cry characteristic of cetacean, dolphin, sea dog and sea lion in described audio fingerprint data memorizer, when described recognition processor runs, uses pattern matching algorithm.
Described core processor uses single-chip microcomputer MSP430F149 chip, uses 3.3V DC-voltage supply.
Described broadband signal amplifying circuit uses N channel, FET-type, power MOS pipe to amplify the signal of telecommunication.
The beneficial effects of the utility model are: use energy measuring and marine organisms cry identification technology, detection primary user's communication, possess frequency spectrum perception and cooperating relay function, it is possible to switching amplification forwarding or decoding forward the cognitive underwater sound communication via node of two kinds of relaying amplification modes.Underwater sound communication cognitive user equipment can be made to access the communication spectrum cavity of primary user neatly, improve frequency spectrum resource utilization rate under water, avoid the impact that marine organisms existence is caused by underwater sound communication process simultaneously.Additionally, by cooperating relay technology, be effectively improved the communication range of cognitive underwater sound node.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is further described.Following example are only used for clearly illustrating the technical solution of the utility model, and can not limit protection domain of the present utility model with this.
As shown in Figure 1, a kind of via node for cognitive underwater sound communication includes underwater acoustic transducer 1, core processor 2, the first electrical switch 3, receiving filter 4, second electrical switch 5, signal processing circuit 6, marine organisms cry identification circuit 7, energy detection circuit 8, broadband signal amplifying circuit 9, transmitting filter 10.Described underwater acoustic transducer 1 is piezoelectric transducer, and resonant frequency is at least 1kHz, is at most 100kHz；Described core processor 2 uses single-chip microcomputer MSP430F149 chip, uses 3.3V DC-voltage supply；Described broadband signal amplifying circuit 9 uses N channel, FET-type, power MOS pipe to amplify the signal of telecommunication, and model is IRFP460.
There are primary user's perception and two kinds of working stages of collaboration communication in this via node in cognitive Underwater Acoustic Network, in the collaboration communication stage, optional amplification forwarding or decoding forward two kinds of relaying amplification modes.Before via node runs, need its energy measuring threshold value and coding, modulate and relay the parameters such as amplification mode and be configured, and distribute the concrete time slot of primary user's perception stage and collaboration communication stage.
The work process of this device is as follows, and when via node runs on primary user's perception stage, core processor 2 controls the first electrical switch 3 and connects with receiving filter 4, controls the second electrical switch 5 and connects with signal processing circuit 6.Underwater sound signal to be detected is received by underwater acoustic transducer 1, acoustical signal be converted into the signal of telecommunication, is received after wave filter 4 filters noise, is transfused to signal processing circuit 6 and energy detection circuit 8.Energy detection circuit 8 analysis meter calculates the energy value of the signal of telecommunication to be detected, compares with threshold value, and testing result is sent into core processor 2.Simultaneously, analog-digital converter in signal processing circuit 6 is under the control of core processor 2, the signal of telecommunication to be detected is converted into digital quantity by analog quantity, fast Fourier transformer after carrying out time-frequency conversion, input marine organisms cry identification circuit 7 and core processor 2 respectively.Recognition processor in marine organisms cry identification circuit 7 uses pattern matching algorithm, is compared with the cetacean in audio fingerprint data memorizer, dolphin, sea dog and sea lion cry characteristic by testing data, then testing result is sent into core processor 2.After core processor 2 calculates the communication band of detection underwater sound signal, analyze two testing results received, if the energy value of the detection signal of telecommunication exceedes set threshold value, or cry characteristic coupling, in then judging marine site, place special frequency channel, there is primary user's communication.Otherwise, then judge that marine site, place can carry out cognitive communications in this time slot.Afterwards, via node reports judged result by proprietary control channel to underwater sound cognitive user.Underwater sound cognitive user, according to the perception information received, controls via node in collaboration communication phases-time for running or resting state.
When via node runs on the collaboration communication stage, core processor 2 controls the first electrical switch 3 and connects with receiving filter 4.Relaying according to amplification forwarding amplifies mode, and core processor 2 controls the second electrical switch 5 and connects with broadband signal amplifying circuit 9.The signal of communication of underwater sound cognitive user is received by underwater acoustic transducer 1, acoustical signal be converted into the signal of telecommunication, is received after wave filter 4 filters noise, processes through broadband signal amplifying circuit 9 and obtain power gain.After carry out matched filtering through transmitting filter 10, core processor 2 controls the first electrical switch 3 and connects with transmitting filter 10 simultaneously, and the signal after amplification is converted to sound wave by underwater acoustic transducer 1 and sends, it is achieved communication relay function.The relaying forwarded according to decoding amplifies mode, and core processor 2 controls the second electrical switch 5 and connects with signal processing circuit 6.The signal of communication of underwater sound cognitive user is received by underwater acoustic transducer 1, acoustical signal be converted into the signal of telecommunication, is received after wave filter 4 filters noise, is transfused to signal processing circuit 6.Under the control of core processor 2, demodulator, decoder, encoder and the manipulator in signal processing circuit 6 is demodulated decoding, re-encoding modulation to the signal of telecommunication.In the signal of telecommunication now obtained, do not contain the noise not filtered by receiving filter 4.Afterwards, this signal of telecommunication carries out matched filtering through transmitting filter 10, and core processor 2 controls the first electrical switch 3 and connects with transmitting filter 10 simultaneously, and the signal after amplification is converted to sound wave by underwater acoustic transducer 1 and sends, it is achieved communication relay function.
A kind of via node for cognitive underwater sound communication that this utility model relates to, can effectively solve the problem that existing underwater acoustic communication equipment cannot flexible access communication spectrum cavity, frequency spectrum resource utilization rate is the highest under water, and underwater sound communication process may be to problems such as halobiontic existence impact.Simultaneously by cooperating relay technology, it is effectively improved the communication range of cognitive underwater sound node.
Of the present utility model ultimate principle, principal character and advantage have more than been shown and described.Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description, principle of the present utility model is simply described; on the premise of without departing from this utility model spirit and scope; this utility model also has various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model claims scope and is defined by appending claims and equivalent thereof.
Claims (7)
1. the via node for cognitive underwater sound communication, it is characterised in that including:
For launching and receive the underwater acoustic transducer of underwater sound signal；
Being connected with underwater acoustic transducer, for selecting the first electrical switch of node working method, described first electrical switch is connected with receiving filter or transmitting filter；
Being connected with receiving filter, for the second electrical switch selecting signal to flow to, described second electrical switch is connected with broadband signal amplifying circuit, or described second electrical switch is connected with signal processing circuit and energy detection circuit；
The marine organisms cry identification circuit being connected with signal processing circuit；
Described signal processing circuit is also connected with broadband signal amplifying circuit；
Described broadband signal amplifying circuit is connected with transmitting filter；
The core processor being connected with the first electrical switch, the second electrical switch, signal processing circuit, marine organisms cry identification circuit, energy detection circuit, broadband signal amplifying circuit respectively.
A kind of via node for cognitive underwater sound communication the most according to claim 1, it is characterised in that: described underwater acoustic transducer is piezoelectric transducer, and operating frequency range is 1k～100kHz.
A kind of via node for cognitive underwater sound communication the most according to claim 1, it is characterised in that: described signal processing circuit includes analog-digital converter, the fast Fourier transformer being sequentially connected with, and described device is controlled by described core processor.
A kind of via node for cognitive underwater sound communication the most according to claim 1, it is characterised in that: described signal processing circuit also includes demodulator, decoder, encoder and the manipulator being sequentially connected with, and described device is controlled by described core processor.
A kind of via node for cognitive underwater sound communication the most according to claim 1, it is characterized in that: described marine organisms cry identification circuit includes audio fingerprint data memorizer and the recognition processor being sequentially connected with, there is the cry characteristic of cetacean, dolphin, sea dog and sea lion in described audio fingerprint data memorizer, when described recognition processor runs, uses pattern matching algorithm.
A kind of via node for cognitive underwater sound communication the most according to claim 1, it is characterised in that: described core processor uses single-chip microcomputer MSP430F149 chip, uses 3.3V DC-voltage supply.
A kind of via node for cognitive underwater sound communication the most according to claim 1, it is characterised in that: described broadband signal amplifying circuit uses N channel, FET-type, power MOS pipe to amplify the signal of telecommunication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201620326938.7U CN205566317U (en) | 2016-04-19 | 2016-04-19 | A relay node for cognitive underwater acoustic |
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| CN201620326938.7U CN205566317U (en) | 2016-04-19 | 2016-04-19 | A relay node for cognitive underwater acoustic |
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| CN205566317U true CN205566317U (en) | 2016-09-07 |
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| CN201620326938.7U Expired - Fee Related CN205566317U (en) | 2016-04-19 | 2016-04-19 | A relay node for cognitive underwater acoustic |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117219125A (en) * | 2023-11-07 | 2023-12-12 | 青岛科技大学 | Marine mammal sound signal imitation hidden scoring method based on audio fingerprint |
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2016
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117219125A (en) * | 2023-11-07 | 2023-12-12 | 青岛科技大学 | Marine mammal sound signal imitation hidden scoring method based on audio fingerprint |
| CN117219125B (en) * | 2023-11-07 | 2024-01-30 | 青岛科技大学 | Marine mammal sound signal imitation hidden scoring method based on audio fingerprint |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20190419 |