CN217085266U - Fish shoal detection device for large-scale aquaculture net cage - Google Patents
Fish shoal detection device for large-scale aquaculture net cage Download PDFInfo
- Publication number
- CN217085266U CN217085266U CN202121308934.3U CN202121308934U CN217085266U CN 217085266 U CN217085266 U CN 217085266U CN 202121308934 U CN202121308934 U CN 202121308934U CN 217085266 U CN217085266 U CN 217085266U
- Authority
- CN
- China
- Prior art keywords
- transducer
- controller
- fish
- detection device
- net cage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The utility model discloses a be used for large-scale aquaculture net case shoal of fish detection device relates to underwater detection technical field, and transducer, drive arrangement and controller are all installed in the shell, and drive arrangement can drive the transducer around vertical rotation of axle, and transducer, drive arrangement and apparent accuse terminal all with controller communication connection. The utility model discloses can survey the shoal of fish in the large-scale box with a net, it is with low costs, survey efficiently, the detection result is accurate.
Description
Technical Field
The utility model relates to an underwater detection technical field especially relates to a be used for large-scale aquaculture net case shoal of fish detection device.
Background
The large-scale aquaculture net cage is becoming one of the main fish aquaculture means, realizes the feeding of marine fishes by building a purse net in the sea, and can intervene in the feeding process by various control means.
In the cage culture process, the accurate assessment of the fish population in the cage has important significance for the environmental adjustment of the cage and the selection of the breeding method. Currently, there are several main counting methods: 1. the method of manual counting is simple, but fish shoals under the water surface are difficult to see due to light transmittance of seawater and the like, and when the net cage is far away from the shore, a large amount of capital needs to be additionally invested for building life guarantee facilities in order to guarantee the life of personnel. 2. The method for shooting by using the underwater optical camera can directly obtain an underwater visual field for detection, but because underwater light is insufficient, the condition in the whole net cage is difficult to obtain by a single camera for a large net cage, and the arrangement of a plurality of cameras around the net cage can only improve the detection capability of the wall of the net cage in a close range, so that good image signals can not be obtained for a deeper area of the net cage, and the underwater optical camera is very expensive, thereby bringing extremely high construction cost. 3. The method comprises the steps of periodically transmitting sound wave signals into water and detecting echo signals of fish schools to detect whether fish exist in a certain direction by using a traditional fish detector method comprising a single-beam fish detector and a multi-beam sonar, wherein the single-beam fish detector can only transmit one beam in a fixed direction, so that the whole culture net cage cannot be detected; the multi-beam fish finder scans a plane under the condition of not moving the transducers by a beam forming method, but the beam forming technology needs a large number of transducers to form a transducer array, so that the installation cost is too high, and the multi-beam fish finder cannot be popularized and used in a large scale.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a be used for large-scale aquaculture net case shoal of fish detection device to solve the problem that above-mentioned prior art exists, can survey the shoal of fish in the whole large-scale net case, with low costs moreover, it is efficient to survey, and the testing result is accurate.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a be used for large-scale aquaculture net case shoal of fish detection device, including transducer, drive arrangement, controller, shell and apparent accuse terminal, the transducer drive arrangement with the controller is all installed in the shell, drive arrangement can drive the transducer is around vertical rotation of axle, the transducer drive arrangement with it all with controller communication connection to show accuse terminal.
Preferably, the driving device is a servo motor.
Preferably, the driving device is fixedly connected in the shell, an output shaft of the driving device is fixedly connected with a transmission rod, and the energy transducer is fixedly connected to the transmission rod.
Preferably, the controller is fixedly connected in the shell, the transmission rod is provided with a conductive slip ring, one end of a signal cable is connected with the controller, and the other end of the signal cable is connected with the transducer through the conductive slip ring.
The utility model discloses for prior art gain following technological effect:
the utility model provides a fish school detecting device for a large-scale aquaculture net cage, which drives an energy converter to rotate around a vertical shaft through a driving device, the energy converter periodically emits sound waves to scan the net cage in the horizontal direction in the rotating process, in a detection period, the transducer is at the reflection echo signal of pivoted in-process collection shoal target and with reflection echo signal transmission to controller, and the controller carries out analysis processes and shows the testing result on showing accuse terminal to reflection echo signal, and the transducer lasts rotatory scanning detection of accomplishing the horizontal direction round until rotatory 360, the utility model discloses a drive arrangement drive transducer continuous rotation scans, can survey the shoal of fish in the whole large-scale box with a net, and detection time is short, improves the accuracy of testing result, and detection efficiency is high, simple structure moreover, and the cost of manufacture is low.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the fish school detection device for the large-scale aquaculture net cage provided by the utility model;
FIG. 2 is a functional diagram of a controller used in the fish shoal detection device of the large-scale aquaculture net cage;
FIG. 3 is a schematic view of the detection of the fish shoal detection device for the large-scale aquaculture net cage provided by the present invention;
in the figure: 100-a fish shoal detection device for a large-scale aquaculture net cage, 1-an energy converter, 2-a driving device, 3-a controller, 4-a shell, 5-a display control terminal, 6-a transmission rod, 7-a conductive slip ring and 8-a signal cable.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a be used for large-scale aquaculture net case shoal of fish detection device to solve the problem that prior art exists, can survey the shoal of fish in the whole large-scale net case, with low costs moreover, survey efficiently, the detection result is accurate.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1-2, the embodiment provides a fish school detection device 100 for a large-scale aquaculture net cage, which includes a transducer 1, a driving device 2, a controller 3, a housing 4 and a display control terminal 5, wherein the transducer 1, the driving device 2 and the controller 3 are all installed in the housing 4, the driving device 2 can drive the transducer 1 to rotate around a vertical axis, and the transducer 1, the driving device 2 and the display control terminal 5 are all in communication connection with the controller 3.
When the device is used, the transducer 1 is driven to rotate around a vertical shaft through the driving device 2, the transducer 1 is controlled to periodically emit sound waves to scan a net cage in the horizontal direction in the rotating process through the controller 3, wherein the controller 3 can select an embedded controller, the controller 3 controls the driving device 2 through a DMA channel, the driving device 2 drives the transducer 1 to rotate, a signal emitting link and a signal receiving link are arranged in the controller 3, a low-power signal generated by the controller 3 is sent to the transducer 1 through the signal emitting link to be emitted, a power amplifier and a filtering module are arranged in the signal emitting link, the power amplifier can change the generated low-power signal into a high-power signal capable of driving the transducer 1, the signal is optimized through the filtering module, and after redundant impurities are filtered, the high-power signal is sent to the transducer 1 to be emitted; in a detection period, the transducer 1 collects the reflected echo signal of a fish school target in the rotating process and uploads the reflected echo signal to the controller 3 after being processed by a signal receiving link, a pre-filter, an analog-to-digital converter (A/D) and a matched filter are arranged in the signal receiving link, after the pre-filter filters part of environmental noise, an analog signal is converted into a digital signal by the analog-to-digital converter (A/D), then the characteristic signal is matched by the digital matched filter to detect whether the target is detected or not, and the result is reported to the controller 3, the controller 3 processes the data and displays the detection result on a display control terminal, the controller 3 controls the driving device 2 to drive the transducer 1 to continuously rotate until the transducer rotates 360 degrees to complete scanning detection of one circle in the horizontal direction, the utility model adopts the driving device to drive the transducer to continuously rotate for scanning, can survey the shoal of fish in the whole large-scale box with a net, need not stop midway, shorten detection time, the detection process is stable, improves the accuracy of testing result, has improved detection efficiency, simple structure moreover, the cost of manufacture is low.
In this embodiment, the driving device 2 is a servo motor, so that the driving is stable and the control is convenient.
As shown in fig. 1, in the present embodiment, the driving device 2 is fixedly connected in the housing 4, the transmission rod 6 is fixedly connected to the output shaft of the driving device 2, and the transducer 1 is fixedly connected to the transmission rod 6. The transducer 1 is in transmission connection with the driving device 2 through the transmission rod 6, so that the structure is simple and the connection is convenient.
As shown in fig. 1, in this embodiment, the controller 3 is fixedly connected in the housing 4, the transmission rod 6 is mounted with the conductive slip ring 7, one end of the signal cable 8 is connected with the controller 3, and the other end is connected with the transducer 1 through the conductive slip ring 7, so as to ensure that the signal cable 8 is not twisted due to the rotation of the transmission rod 6.
As shown in fig. 3, in a detection method using the above-mentioned fish school detection device 100 for large-scale aquaculture net cages, the controller 3 controls the driving device 2 to drive the transducer 1 to rotate, and a detection period is defined as a beam angle θ of rotation of the transducer 1; in a detection period, with T 0 The moment is the starting point, at T 0 The transducer 1 is controlled to emit sound waves to scan the interior of the net cage in the horizontal direction through the controller 3 at any time, the transducer 1 collects reflected echo signals of fish school targets in the rotating process and transmits the reflected echo signals to the controller 3, and the controller 3 analyzes and processes the reflected echo signals and displays detection results on the display and control terminal 5; the transducer 1 continues to rotate until 360 ° of rotation completes one scan detection in the horizontal direction.
During a detection period, the transducer 1 is at T 0 Emitting sound wave at time and arriving at T 1 All the time is in a receiving mode (the section line part in figure 3), T is taken from the emission of sound waves to the reception of the reflected echo signals, and T is satisfied 0 +t≤T 1 So that the reflected echo can be received by the transducer 1, and the detection effect is ensured.
The rotation angular velocity of the transducer 1 is (0.5-1.5) DEG/s, preferably 1 DEG/s, which ensures that the transducer 1 rotates by a small angle within the time t and is adjusted according to the fact that the transducer 1 can receive the reflected echo signal.
In a detection period, when the controller 3 receives the reflected echo signal, the controller 3 calculates the rotating angle of the transducer 1 according to the time of receiving the reflected echo signal and the rotating angular velocity of the transducer 1, and performs angle compensation on the position of the fish school target according to the rotating angle of the transducer 1. For a net cage with the radius of 50m, a good resolution ratio can be achieved by using signals with the length of 1 millisecond, and the detection process is divided into 360-degree detection at one time according to the beam angle theta of 3 degrees120 detection periods, when a fish school target exists at a distance of 50 meters from the transducer 1, the wave beam can return only after about 6.66ms according to the sound velocity of 1500m/s in water, and the receiving time is set to be 7ms, namely T 0 +7ms＝T 1 After the receiving time of 7ms elapses, the receiving end is turned off, the process is repeated after the transducer 1 rotates to the next detection period, in the process, the angle of the transducer 1 rotating at the angular speed of 1 °/s is 0.07 °, and since the beam angle θ is 3 ° and is already far greater than the rotation speed of the transducer 1, the error caused by the rotation of the transducer 1 can be basically ignored, but in order to improve the detection accuracy, the angle compensation calculation can be performed on the position of the fish school target at the control end artificially according to the angle of the transducer 1 rotating, so as to eliminate the error.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (4)
1. The utility model provides a be used for large-scale aquaculture net case shoal of fish detection device which characterized in that: including transducer, drive arrangement, controller, shell and apparent accuse terminal, the transducer the drive arrangement with the controller is all installed in the shell, drive arrangement can drive the transducer is around vertical rotation of axis, the transducer drive arrangement with show accuse terminal all with controller communication connection.
2. The fish school detection device for the large-scale aquaculture net cage according to claim 1, characterized in that: the driving device is a servo motor.
3. The fish school detection device for the large-scale aquaculture net cage according to claim 1, characterized in that: the driving device is fixedly connected in the shell, a transmission rod is fixedly connected to an output shaft of the driving device, and the energy converter is fixedly connected to the transmission rod.
4. The fish school detection device for the large-scale aquaculture net cage according to claim 3, characterized in that: the controller is fixedly connected in the shell, the transmission rod is provided with a conductive sliding ring, one end of a signal cable is connected with the controller, and the other end of the signal cable is connected with the transducer through the conductive sliding ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121308934.3U CN217085266U (en) | 2021-06-11 | 2021-06-11 | Fish shoal detection device for large-scale aquaculture net cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121308934.3U CN217085266U (en) | 2021-06-11 | 2021-06-11 | Fish shoal detection device for large-scale aquaculture net cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217085266U true CN217085266U (en) | 2022-07-29 |
Family
ID=82498375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121308934.3U Active CN217085266U (en) | 2021-06-11 | 2021-06-11 | Fish shoal detection device for large-scale aquaculture net cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217085266U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113281761A (en) * | 2021-06-11 | 2021-08-20 | 中国水产科学研究院渔业机械仪器研究所 | Device and method for detecting fish school in large-scale aquaculture net cage |
-
2021
- 2021-06-11 CN CN202121308934.3U patent/CN217085266U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113281761A (en) * | 2021-06-11 | 2021-08-20 | 中国水产科学研究院渔业机械仪器研究所 | Device and method for detecting fish school in large-scale aquaculture net cage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7652952B2 (en) | Sonar imaging system for mounting to watercraft | |
| WO2022166097A1 (en) | Side-scan sonar-based multi-mode imaging method for underwater target | |
| CN101334473B (en) | Deep water net cage fish school status remote real time monitoring instrument based on acoustic multi-beam | |
| US5168471A (en) | Integrated passive acoustic and active ultrasonic marine aquatic finder system | |
| CN113281761A (en) | Device and method for detecting fish school in large-scale aquaculture net cage | |
| CN217085266U (en) | Fish shoal detection device for large-scale aquaculture net cage | |
| CN107202990B (en) | A kind of mixing frogman method for early warning and device based on unmanned boat and submariner device | |
| CN110824483A (en) | Modular multi-beam imaging sonar | |
| CN112180379A (en) | Fish data statistics and analysis system | |
| CN210470722U (en) | Multifunctional intelligent fishing boat capable of automatically avoiding obstacles and tracking identification | |
| CN202904016U (en) | Multi-probe underwater detector for fishing boats | |
| CN115792923A (en) | Optical-acoustic combined coastal nuclear power underwater disaster-causing biological monitoring method, device and equipment | |
| KR100439009B1 (en) | Device of acquiring underwater image by either the acoustic sonar or video camera | |
| CN103983977A (en) | Five-wave-beam fish detector | |
| JP7053170B2 (en) | Underwater robot control system and underwater robot control method | |
| CN110044828B (en) | Acousto-optic fused coral activity detection system and method | |
| CN209803633U (en) | fishery aquaculture monitoring system based on fish gathering acoustic monitoring and positioning | |
| CN114847210B (en) | Intelligent three-dimensional monitoring system for large-scale deep and open sea aquaculture fishing ground | |
| CN114415185A (en) | Omnidirectional acoustic detection sonar and detection method | |
| EP1891461A2 (en) | Sonar imaging system for mounting to watercraft | |
| CN217305533U (en) | Remote on-line monitoring device for underwater pile foundation scouring | |
| WO2024049376A1 (en) | Drone fish detection system and algorithm | |
| KR101797442B1 (en) | 2MHz Side Scan Sonar for Resolution Enhancement and Operation Method thereof | |
| CN113728953A (en) | Aquaculture system with movable sensor | |
| CN113466418A (en) | Underwater intelligent moving carrier and water pool system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |