CN105785968A - Marine ranch acoustic monitoring system and monitoring method - Google Patents
Marine ranch acoustic monitoring system and monitoring method Download PDFInfo
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Abstract
The invention provides a marine ranch acoustic monitoring system and a monitoring method. The monitoring system comprises a monitoring node and a data processing module. The monitoring node comprises an energy transducer, a transceiving control unit, and a sensor. The energy transducer is used for receiving echo signals of marine organisms in a marine ranch, and is used for transmitting the echo signals to a data processing module. The sensor is used for acquiring the marine ranch environment information, and is used to transmit the marine ranch environment information to the data processing module. The transceiving control unit is used to generate acoustic wave pulse signals according to acoustic parameters, and the energy transducer can be used to radiate the acoustic wave pulse signals to the marine ranch water body after being excited by the acoustic wave pulse signals. The transceiving control unit is also used for receiving the echo signals of the marine organisms in the marine ranch, and is used to eliminate the noises in the echo signals. The data processing module is used for the processing of the data uploaded by various monitoring nodes and the information fusion, and by the statistic and analysis processing, the moving condition, the density, and the biological resource quantity information of the marine organisms in the marine ranch can be acquired in a real-time manner.
Description
Technical field
The present invention relates to a kind of aquafarm acoustic monitoring system and method, particularly to For Long-term Monitoring Systems and the method for the density of a kind of aquafarm Mesichthyes (or other living marine resources), shoal of fish active state and total resources measurement.
Background technology
Living resources monitoring is one of key issue of aquafarm construction solution, and aquafarm Mesichthyes or the halobiontic stock number of other classes, density and the change of shoal of fish active state are the important foundations setting up aquafarm monitoring resource Assessment theory and method.Various living resources in aquafarm are carried out Quantitative Monitoring assessment, it is possible to adjust the ratio of each marine stock biomass in time, to reach the balanced growth of resource, it is ensured that the Optimum Economic benefit of aquafarm and halobiontic sustainable development.
Adopt acoustic technique to carry out stock of fish monitoring and assessment is one of conventional monitoring method, due in most cases, sea water visibility is relatively low, decay in the seawater large effect owing to being subject to light, the operating distance of optical device is limited, is difficult to play a role in the monitoring of large-area aquafarm.Trend from the development of living marine resources monitoring technology, acoustic monitoring technique is the main flow of the monitoring of aquafarm living resources and research, compared with optical monitoring method, although acoustic technique is directly perceived not as optical means imaging, due to it, propagation distance is farther out in the seawater, it is possible to meet the requirement of the large area monitoring of living marine resources in aquafarm.
Additionally, science fish finder can also be arranged on research vessel by the assessment for aquafarm, adopts boat mode that Fish and other marine organisms of aquafarm are investigated and assessed, and its advantage is that coverage is big, shortcoming is the poor in timeliness of survey data, it is impossible to carry out long term monitoring.
Summary of the invention
It is an object of the present invention to provide a kind of aquafarm Mesichthyes and the apparatus and method of other biological resource networkization monitoring, it is achieved aquafarm Fish and other halobiontic density, active situation and marine stock biomass are real-time, long term monitoring and assessment.To achieve these goals, the present invention provides a kind of aquafarm acoustic monitoring system, and described system comprises: some monitoring nodes and data processing module；
Described monitoring node comprises: transducer, transmitting-receiving control unit and sensor；
Described transducer, is used for receiving in aquafarm halobiontic echo-signal, and by echo-signal transmission to data processing module；
Sensor, is used for obtaining aquafarm environmental information, and by aquafarm environmental information transmission to data processing module；Wherein said aquafarm environmental information comprises: temperature, salinity and sea water nutritional labeling；
Transmitting-receiving control unit, for producing sound wave pulse signal according to parameters,acoustic, and adopt sound wave pulse signal to encourage described transducer to be incident upon in the water body of pasture by sound wave pulse signal amplitude, receive halobiontic echo-signal in aquafarm simultaneously, and reject the noise in echo-signal；
Described data processing module: the data for being uploaded by each monitoring node carry out processing and information fusion, and are processed by statistics and analysis, to obtain halobiontic active situation in aquafarm, density and marine stock biomass information in real time；
Wherein, described monitoring node is placed on oceanographic buoy, and the transducer beams that monitoring node comprises is irradiated downwards；Or described monitoring node is placed on the bottom, and the transducer beams that monitoring node comprises upwards is irradiated；
When transducer is arranged on buoy, adopting and flexibly connect between described transducer and buoy, transducer is arranged on weight simultaneously；
Transducer at least launches a kind of ping in aquafarm water body, and transducer has certain circular cone angle of release, and angle of release ranges for 5～10 °.
Optionally, above-mentioned transmitting-receiving control unit farther includes: signal launches subelement, signal receives subelement, control subelement, pretreatment subelement and the first radio communication subelement；
Described signal launches subelement can produce at least one sound wave pulse signal, and excites transducer to be transmitted in water by acoustic signals；Described signal receives the echo-signal that subelement is able to receive that in aquafarm water body marine organisms and produces；Above-mentioned pretreatment subelement, for echo-signal is acquired, is mixed, filters and the pretreatment of noise reduction；Described first radio communication subelement, for by pretreated signal transmission to data processing module；Described control subelement, for receiving the control signal of data processing module or controlling parameter, and subelement and the parameter of signal reception subelement is launched based on control signal and control parameter control signal, and the parameter of signal transmitting subelement comprises: signal frequency, signal pulsewidth, signal launch the cycle.
Optionally, above-mentioned monitoring node also comprises: the second wireless communication module, is used for making monitoring node and remote computer end carry out data exchange, supports transparent data passage and protocol analysis pattern, and then realize long-range, wireless and networking communication mode.
Optionally, above-mentioned data processing module comprises further:
Receive submodule, for receiving echo-signal and the Ocean environment information that each monitoring node obtains, and echo-signal is detected and Ocean environment information data fusion pretreatment, more pretreated information is transferred to data process submodule；
Data process submodule, are used for the algorithm for estimating based on shoal of fish Biomass and signal attenuation calibration algorithm, and by measuring the target strength of fish body or other marine organisms and then estimating the size of monomer fish.
Optionally, above-mentioned monitoring node is arranged on buoy carrier platform, and described buoy carrier platform includes electric supply installation, buoyancy aid and associated connecting member；Wherein, described electric supply installation is: solar electric power supply system or accumulator；Described transmitting-receiving control unit is positioned at the box house position of buoy carrier platform and is powered by electric supply installation, and described buoy carrier platform carries described transducer by compliant member.
Additionally, the present invention provides a kind of aquafarm acoustic monitoring method, described method comprises:
Step 101) produce at least one ping, by transducer, the ping of generation is transmitted in the water body of aquafarm, and receives the echo-signal of the shoal of fish and other biological resource in aquafarm water body；
Obtaining aquafarm information, wherein said aquafarm information comprises: temperature, salinity and sea water form split-off；
Step 102) undertaken processing and information fusion by the echo-signal obtained and aquafarm information, and processed by statistics and analysis, to obtain the active situation of fish in aquafarm, density and marine stock biomass information in real time.
Optionally, above-mentioned steps 102) comprise further:
Step 102-1) reject the interference and reverberation that comprise in echo-signal；
Step 102-1) measure the scattering resonance state α of monomer fish, utilize the relation of target strength and length of fish body to estimate the size dimension of fish body；
Step 102-2) based on the Biomass of the shoal of fish in school density in the size dimension estimation aquafarm of fish body and Density Distribution and then estimation net cage, wherein said school density utilizes the method for echo integration to obtain based on echo-signal.
The present invention relates to a kind of aquafarm Fish and the multi-point remote acoustic monitoring system of other living marine resources amount monitoring and evaluations, this system adopts the mode of each monitoring point of centerized fusion to work, local bank station center control each monitoring node.Monitoring point utilizes transducer to launch acoustic signals in water, by the echo-signal of the organism that transducer receives is processed, thus monitoring ocean Mesichthyes and other halobiontic active situation and marine stock biomass spatial and temporal distributions, monitoring node can also gather the ambient parameter information such as ocean temperature, turbidity simultaneously simultaneously.
Compared with prior art, the present invention's it is a technical advantage that:
Appointment marine site long term monitoring aquafarm Mesichthyes active situation, density and biological total amount can be placed on by cloth, various living resources in aquafarm can be carried out qualitative assessment, overcome boating type monitoring and evaluation data actual effect poor, the shortcoming lacking chronicity, to the ratio adjusting each marine stock biomass in time, the balanced growth to reach resource is very meaningful.
Accompanying drawing explanation
Fig. 1 aquafarm monitoring block diagram of system provided by the invention；
Fig. 2 present invention records data processing module composition diagram；
The monitoring node composition diagram that Fig. 3 present invention records；
The receiving and transmitting control devices composition frame chart that Fig. 4 present invention records.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
The principle of technical solution of the present invention illustrates and sets forth:
The present invention relates to a kind of aquafarm Mesichthyes and other marine organisms active situation, density and marine stock biomass are real-time, long term monitoring apparatus and method, it is achieved biological (particularly Fish) the resource reparation in accurate evaluation aquafarm district and recovery situation.The present invention provide a kind of in real time, long-term, be automatically performed assessment aquafarm Mesichthyes and other marine organisms active situation without manual intervention, the system and method for density and marine stock biomass, poultry feeders frequently low cost can be helped, to the accurate information of fish in the harmless estimation net cage of fish." fish " refers to a kind of aquatile herein, and the present invention is not only applicable to specific Fish, and is adapted to the Fish in the net cages such as multiple environment such as ocean, lake, river or aquatile.
Fig. 1 is system structure and the composition diagram of the present invention, and this system comprises the monitoring node that cloth is placed in aquafarm and the data processing module being positioned at bank station.
Described monitoring node comprises: transducer 22, transmitting-receiving control unit 21 and sensor；Described transmitting-receiving control unit of stating farther includes: signal launches subelement, signal receives subelement, control subelement, pretreatment subelement and the first radio communication subelement；Described signal launches subelement can produce at least one sound wave pulse signal, and excites transducer to be transmitted in water by acoustic signals；Described signal receives the echo-signal that subelement is able to receive that in aquafarm water body marine organisms and produces；Above-mentioned pretreatment subelement, for echo-signal is acquired, is mixed, filters and the pretreatment of noise reduction；Described first radio communication subelement, for by pretreated signal transmission to data processing module；Described control subelement, for receiving the control signal of data processing module or controlling parameter, and subelement and the parameter of signal reception subelement is launched based on control signal and control parameter control signal, and the parameter of signal transmitting subelement comprises: signal frequency, signal pulsewidth, signal launch the cycle.
Described monitoring node is placed on oceanographic buoy, and the transducer beams that monitoring node comprises is irradiated downwards；Or described monitoring node is placed on the bottom, and the transducer beams that monitoring node comprises upwards is irradiated；When transducer is arranged on buoy, adopting and flexibly connect between described transducer and buoy, transducer is arranged on weight simultaneously；Transducer at least launches a kind of ping in aquafarm water body, and transducer has certain circular cone angle of release, and angle of release ranges for 5～10 °.
Optionally, above-mentioned monitoring node also comprises: the second wireless communication module, is used for making monitoring node and remote computer end carry out data exchange, supports transparent data passage and protocol analysis pattern, and then realize long-range, wireless and networking communication mode.
Optionally, above-mentioned data processing module comprises further:
Receive submodule, for receiving echo-signal and the Ocean environment information that each monitoring node obtains, and echo-signal is detected and Ocean environment information data fusion pretreatment, more pretreated information is transferred to data process submodule；
Data process submodule, are used for the algorithm for estimating based on shoal of fish Biomass and signal attenuation calibration algorithm, and by measuring the target strength of fish body or other marine organisms and then estimating the size of monomer fish.
Described data processing module comprises:
Described monitoring node is arranged on buoy carrier platform 4, and described buoy carrier platform includes electric supply installation, buoyancy aid and associated connecting member；Wherein, described electric supply installation is: solar electric power supply system or accumulator；Described transmitting-receiving control unit is positioned at the box house position of buoy carrier platform and is powered by electric supply installation, and described buoy carrier platform carries described transducer by compliant member.
The mounting means of transducer has kinds of schemes to select, and one is mounted in above buoy, and the beam elevation of transducer irradiates downwards.Meanwhile, irradiating wave beam can rotate in the plane being perpendicular to moving direction, enables the wave beam of transducer to be irradiated to the whole cross section in net cage；Two is that transducer is arranged on aquafarm seabed, and fixing bank station, transducer beams is upwards irradiated vertically upward；Two kinds of mount schemes can obtain the echo-signal of shoal of fish target, and completes Biomass in aquafarm is estimated and long term monitoring, and its modification method is slightly different.The present invention is arranged on buoy manner below with transducer and describes the implementation process of the present invention in detail.
Transducer 22 at least launches a kind of ping in net cage under the control of transmitting-receiving control unit 21, transducer 22 has certain circular cone angle of release, angle of release is unsuitable excessive, it is typically in about 10 °, transmitting-receiving is adopted to close the transducer put, operating frequency selects according to monitoring Larger water depths and fish size, and this example selects 200kHz.Making the signal that transducer is launched vertical, the position of transducer may be subject to the impact that current, weather condition and buoy platform move as far as possible.
Transducer is carried below buoy platform 25, carrier for monitoring node, it is possible to be maintained at marine steady, and solar power supply apparatus is provided, simultaneously by transducer and buoy platform with flexible connection mode, transducer beams can be irradiated to any position in aquafarm water body.Buoy platform is a kind of simple device, and buoy carrier platform includes electric supply installation (solar electric power supply system or accumulator), buoyancy aid and associated connecting member.Receiving and transmitting control devices is arranged in buoy carrier platform, electric supply installation power, it is possible to be maintained at marine steady, and the solar panel that can pass through to be mounted above is powered to transmitting-receiving control unit, and its designing technique is also very ripe.
Transmitting-receiving control unit is connected by cable with transducer, and this device can be placed on inside buoy platform, and concrete mounting means depends on design.Receiving and transmitting control devices produces acoustic signals, and drives transducer to launch at least one ping in net cage, receives the target echo signal of fish body in net cage, and echo-signal is carried out pretreatment.Its composition is as shown in Figure 4.
Transmitting-receiving control unit is the critical piece of this invention, is arranged in buoy platform.Launch subelement including signal, signal receives subelement, control subelement and pretreatment subelement, and connects the first wireless communication module, receives the parameter of data processing module, and by monitoring node data transfer rate processing module.Signal launches subelement can at least produce a kind of sound wave pulse signal, and excites transducer to be transmitted in water by acoustic signals, it is ensured that enough signal to noise ratios；Signal receives the echo-signal that subelement is able to receive that in net cage fish body target and produces.And deliver to pretreatment subelement carry out being mixed, filter, the pretreatment such as noise reduction, and be transferred to data processing module by the first wireless communication module；Control subelement primary recipient system control interface by control signal that is wired or that be wirelessly transferred or parameter.Control to launch and receive the work of subelement completion system.
In Fig. 4, control interface 101 to be connected with wireless transport module, receive control command 12 (to launch, the instructions such as stopping) and parameters,acoustic 11 (operating frequency, signal form, pulse width etc.), control module 103 and receive these parameters to control the duty of system, pretreatment module 104 controls transmitting and the reception of acoustical signal according to parameters,acoustic.Acoustic signal through overdriving 111, amplify 112 and with transducer mate 113 and transmitting-receiving change-over circuit 114 be applied on transducer 22, finally launch.When running into the shoal of fish or other marine organisms when sound wave, produce target echo and amplify 109 through transmitting-receiving change-over circuit 114 through prime, dynamically regulate 108, two grades of amplifications 107, wave filter 106, adopt LT1562-2 active filter chip.After AD sampling 105, being completed the preliminary treatments such as noise reduction by pretreatment module 104, pretreatment module is core devices by powerful DSP, adopts the TMS320C645X chip of TI company, basic frequency reaches 1.2GHz, and its disposal ability reaches 9600MIPS or 9.6GMACS.Data after treatment, are sent by wireless transport module through controlling interface, shore station data processing system receive, and resolve post processing, are done final process by processing software, carry out statistics and analysis, result is shown to staff or file is arrived in storage.
Wireless communication module, the present invention adopts the wireless data transfer module based on arm processor and 3GWCDMA network that 3G communication unit is developed.What this module can make monitoring node and remote computer end carries out data exchange, supports transparent data passage and protocol analysis pattern, it is achieved the communication mode of long-range, wireless and networking.Distributed collection node is allowed to realize the wireless connections with Internet.Advantages such as (by flow or duration based accountings) that this unit has network coverage wide (mobile network's coverage), networking flexibility is quick, operating cost is low.Module adopts ARM11 processor S3C6410, emerging WCDMAAD3812 module in selection.
Shore station data processing system 01 is connected with the Internet, data communication is carried out with the monitoring node in pasture by wireless communication module, it can be portable computer, embedded processing systems, the industrial computer of standard or other any general calculating platforms, wirelessly with control interface communication, complete the transmission of data.
Data processing module is for realizing and measuring based on fish body target strength, the related algorithm of shoal of fish stock number statistics and analysis and assessment, and detailed process is as follows:
First scattering resonance state α or other target state estimator methods of monomer fish is measured in application, utilizes the size dimension of target strength and the relation estimation fish body of length of fish body.
Then passing through in Measuring Oceanic pasture that school density and Density Distribution are to estimate the Biomass of the shoal of fish in net cage, school density can utilize the method for echo integration to obtain.
It addition, aquafarm also comprises in echo-signal interference and reverberation, process software and adopt signal processing method can reject major part interference signal, it is ensured that to the accuracy of the estimation of school density, living resources total amount in aquafarm.
Fish body acoustic scattering model is the key accurately estimating fish density, biological total amount, relevant model has had substantial amounts of data discussion, the present invention mainly utilizes existing fish body acoustic scattering model realization to the active situation of the shoal of fish, density and marine stock biomass, long term monitoring and assessment in aquafarm.
Embodiment 1
Aquafarm distance seashore is farther out, general apart from a few to tens of kilometers of seashore ten, and the assessment of aquafarm Mesichthyes and living marine resources is relatively difficult.The present invention relates to a kind of remote supervision system and method, it is possible to solve this problem.The system structure of the present invention is with composition as it is shown in figure 1, system is processed data system by bank station and disperses the multiple monitoring nodes laid in aquafarm to form, and the quantity of the monitoring node in aquafarm is determined by area and the detection requirement of aquafarm.Scattered monitoring node carries out data communication and control by 3G/4G wireless communication module and shore station data processing system.Monitoring node is made up of with transmitting-receiving control unit and other sensors transducer, and Fish and other marine organisms freely can move about in aquafarm.Its principle as in figure 2 it is shown, in aquafarm monitoring node have multiple placement schemes, one is be placed on oceanographic buoy by monitoring node, adopt solar energy give each node power, transducer beams is irradiated downwards.Two is that monitoring node is placed on the bottom, and wave beam upwards irradiates.
The real-time monitoring system of aquafarm resource.Can obtain in time and accurately and show the time of the active situation of aquafarm Mesichthyes, density and stock number, spatial distribution.Native system includes, and on a buoy being arranged on the water surface, or cloth is placed on the monitoring node in seabed, and underwater acoustic transducer is arranged on below buoy, and transmitting-receiving control unit is watertight electronic compartment, is arranged on buoy；Underwater acoustic transducer at least can produce a kind of sound wave letter pulse number (such as continuous signal or linear FM signal), sound wave is irradiated to the fish body in water or on other marine organism, and receive fish body or the scatter echo of other marine organism target, by the process to fish echo signal, long term monitoring statistics obtains the information such as aquafarm Mesichthyes active situation, density and biological total amount.
Underwater acoustic transducer at least launches a kind of ping in aquafarm water body, and transducer has certain circular cone angle of release, and in order to reduce interference, angle of release is unsuitable excessive.Making the signal that transducer is launched vertical, the position of transducer and direction of illumination may be subject to the impact of the factors such as current, weather condition and buoy move as far as possible.Can adopting between transducer and buoy and flexibly connect, transducer is arranged on weight simultaneously, and the direction of illumination to ensure transducer will not change because of the movement of buoy.
Transmitting-receiving control unit, including signal transmission circuit, signal receiving circuit, control module, pretreatment module and wireless communication module, signal transmission circuit can at least produce a kind of sound wave pulse signal, and excites transducer to be transmitted in water by acoustic signals, it is ensured that enough signal to noise ratios；The echo-signal that signal receiving circuit is able to receive that in the water body of pasture fish body target and produces.And deliver to that preprocessor is filtered, noise reduction etc. processes, and it is transferred to shore station data processing system by wireless module (3G/4G)；Control signal that control circuit primary recipient system control interface is wirelessly transferred by 3G/4G module or control parameter.Control the radiating circuit of transmitting-receiving control unit and receive circuit relevant parameter, the work of completion system.
Control module, it is provided that one group of connection interface that the acoustic monitoring system of aquafarm living resources monitoring is controlled, including the setting (frequency, pulsewidth and signal form etc.) of parameters,acoustic, other sensor control etc..
Wireless communication module, this module can adopt 3G/4G module.What this module can make scattered monitoring node and remote computer end carries out data exchange, supports transparent data passage and protocol analysis pattern, it is achieved the communication mode of long-range, wireless and networking.Make dispersion monitoring node realize the wireless connections with Internet, carry out data exchange and communication.
Shore station data processing system is connected with the Internet, each monitoring node will receive, from transducer, the information that in aquafarm, fish body or other halobiontic echo-signal and other sensors obtain, and carry out pretreatment, by 3G/4G module transfer to data handling system, data process and information fusion is completed by processing software (can be write) by any programming language, processed by statistics and analysis, to obtain the information such as the active situation of fish, density and marine stock biomass in aquafarm in real time.Processing software package draws together algorithm for estimating and the signal attenuation calibration algorithm of corresponding shoal of fish Biomass.The size of monomer fish is estimated by measuring the target strength of fish body or other marine organisms.And the measurement data of multiple sensor can be processed, generate report and be shown in display, or store into file.
It should be noted that the embodiment of present invention described above and and unrestricted.It will be understood by those of skill in the art that any amendment to technical solution of the present invention or equivalent substitute the objective without departure from technical solution of the present invention and scope, it all should be encompassed in scope of the presently claimed invention.
Claims (7)
1. an aquafarm acoustic monitoring system, it is characterised in that described system comprises: some monitoring nodes and data processing module；
Described monitoring node comprises: transducer, transmitting-receiving control unit and sensor；
Described transducer, is used for receiving in aquafarm halobiontic echo-signal, and by echo-signal transmission to data processing module；
Sensor, is used for obtaining aquafarm environmental information, and by aquafarm environmental information transmission to data processing module；Wherein said aquafarm environmental information comprises: temperature, salinity and sea water nutritional labeling；
Transmitting-receiving control unit, for producing sound wave pulse signal according to parameters,acoustic, and adopt sound wave pulse signal to encourage described transducer to be incident upon in the water body of pasture by sound wave pulse signal amplitude, receive halobiontic echo-signal in aquafarm simultaneously, and reject the noise in echo-signal；
Described data processing module: the data for being uploaded by each monitoring node carry out processing and information fusion, and are processed by statistics and analysis, to obtain halobiontic active situation in aquafarm, density and marine stock biomass information in real time；
Wherein, described monitoring node is placed on oceanographic buoy, and the transducer beams that monitoring node comprises is irradiated downwards；Or described monitoring node is placed on the bottom, and the transducer beams that monitoring node comprises upwards is irradiated；
When transducer is arranged on buoy, adopting and flexibly connect between described transducer and buoy, transducer is arranged on weight simultaneously；
Transducer at least launches a kind of ping in aquafarm water body, and transducer has certain circular cone angle of release, and angle of release ranges for 5～10 °.
2. aquafarm acoustic monitoring system according to claim 1, it is characterised in that described transmitting-receiving control unit farther includes: signal launches subelement, signal receives subelement, control subelement, pretreatment subelement and the first radio communication subelement；
Described signal launches subelement can produce at least one sound wave pulse signal, and excites transducer to be transmitted in water by acoustic signals；
Described signal receives the echo-signal that subelement is able to receive that in aquafarm water body marine organisms and produces；
Described pretreatment subelement, for echo-signal is acquired, is mixed, filters and the pretreatment of noise reduction；
Described first radio communication subelement, for by pretreated signal transmission to data processing module；
Described control subelement, for receiving the control signal of data processing module or controlling parameter, and subelement and the parameter of signal reception subelement is launched based on control signal and control parameter control signal, and the parameter of signal transmitting subelement comprises: signal frequency, signal pulsewidth, signal launch the cycle.
3. aquafarm acoustic monitoring system according to claim 1, it is characterised in that described monitoring node also comprises:
Second wireless communication module, is used for making monitoring node and remote computer end carry out data exchange, supports transparent data passage and protocol analysis pattern, and then realize long-range, wireless and networking communication mode.
4. aquafarm acoustic monitoring system according to claim 1, it is characterised in that described data processing module comprises further:
Receive submodule, for receiving echo-signal and the Ocean environment information that each monitoring node obtains, and echo-signal is detected and Ocean environment information data fusion pretreatment, more pretreated information is transferred to data process submodule；
Data process submodule, are used for the algorithm for estimating based on shoal of fish Biomass and signal attenuation calibration algorithm, and by measuring the target strength of fish body or other marine organisms and then estimating the size of monomer fish.
5. aquafarm acoustic monitoring system according to claim 1, it is characterised in that described monitoring node is arranged on buoy carrier platform, described buoy carrier platform includes electric supply installation, buoyancy aid and associated connecting member；
Wherein, described electric supply installation is: solar electric power supply system or accumulator；Described transmitting-receiving control unit is positioned at the box house position of buoy carrier platform and is powered by electric supply installation, and described buoy carrier platform carries described transducer by compliant member.
6. an aquafarm acoustic monitoring method, described method comprises:
Step 101) produce at least one ping, by transducer, the ping of generation is transmitted in the water body of aquafarm, and receives the echo-signal of the shoal of fish and other biological resource in aquafarm water body；
Obtaining aquafarm information, wherein said aquafarm information comprises: temperature, salinity and sea water form split-off；
Step 102) undertaken processing and information fusion by the echo-signal obtained and aquafarm information, and processed by statistics and analysis, to obtain the active situation of fish in aquafarm, density and marine stock biomass information in real time.
7. aquafarm acoustic monitoring method according to claim 7, it is characterised in that described step 102) comprise further:
Step 102-1) reject the interference and reverberation that comprise in echo-signal；
Step 102-1) measure the scattering resonance state α of monomer fish, utilize the relation of target strength and length of fish body to estimate the size dimension of fish body；
Step 102-2) based on the Biomass of the shoal of fish in school density in the size dimension estimation aquafarm of fish body and Density Distribution and then estimation net cage, wherein said school density utilizes the method for echo integration to obtain based on echo-signal.
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| CN112880735B (en) * | 2021-01-08 | 2023-12-05 | 上海海洋大学 | Method for monitoring shrimp culture pond by using water quality and water surface acoustic combined monitoring device |
| CN112882042A (en) * | 2021-01-14 | 2021-06-01 | 天津市水产研究所 | Marine ranching seabed telemetering and identifying method based on acoustic data |
| CN112882042B (en) * | 2021-01-14 | 2022-06-21 | 天津市水产研究所 | Marine ranching seabed telemetering and identifying method based on acoustic data |
| CN113805162A (en) * | 2021-11-18 | 2021-12-17 | 杭州雅格纳科技有限公司 | Fish growth detection method and device based on ultrasonic phased array |
| CN114924278A (en) * | 2022-04-06 | 2022-08-19 | 中国科学院声学研究所北海研究站 | Acoustic evaluation method for fish resources for marine ranching |
| CN114924278B (en) * | 2022-04-06 | 2024-06-07 | 中国科学院声学研究所北海研究站 | Acoustic evaluation method for fish resources for ocean pasture |
| CN114637014A (en) * | 2022-05-17 | 2022-06-17 | 仲恺农业工程学院 | Underwater robot-based unmanned fishing ground fish school behavior recognition system and method |
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