• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present disclosure discloses an auxiliary decision-making system for tuna purse seine precise fishing and a method thereof, solving the disadvantages that fish school 5 escapes easily, the purse seining has a high empty rate, and the catching efficiency is low in the process of catching tuna. The main point of its technical scheme is that the system comprises a vessel and a purse seine, as well as a fishing sonar, a monitoring device for monitoring and acquiring purse seine state information, and a control device for controlling. The monitoring device comprises a plurality of GPS positioning devices 10 which are installed on the float line of the purse seine to detect the horizontal position of the float line on the water, and a plurality of underwater acoustic beacons which are installed on the bottom line and the netting panels of the purse seine to detect the spatial position. The purse seine state information comprises horizontal position information detected and acquired by the GPS positioning devices and relative spatial position 15 information of a plurality of points detected and acquired by underwater acoustic beacons. The present disclosure provides an auxiliary decision-making system for tuna purse seine precise fishing and a method thereof, which can detect and control the position state relationship between purse seine and fish school in real time, and improve fishing efficiency.
    公开号:NL2027871A
    申请号:NL2027871
    申请日:2021-03-31
    公开日:2021-07-07
    发明作者:Tong Jianfeng；Zhang Jin；Wang Xuefang；Zhou Cheng；Wan Rong；Zhu Weidong；Zhu Zhenhong；Xi Wang
    申请人:Univ Shanghai Ocean；
    IPC主号:
    专利说明:

    AUXILIARY DECISION-MAKING SYSTEM FOR TUNAPURSE SEINE PRECISE FISHING AND METHOD THEREOF
    TECHNICAL FIELD The present disclosure relates to marine fishing technology, in particular to an auxiliary decision-making system for tuna purse seine precise fishing and a method thereof.
    BACKGROUND In pelagic fishing, the fishing method mainly comprises purse seining, trawling, squid jigging and so on, wherein purse seine fishing is the main fishing method for tuna fish. The tuna purse seine usually consists of a mother ship and a small boat dragging the purse seine. The small boat drags one end of the purse seine and casts the net while surrounding the tuna fish. However, due to the fast swimming speed, high sensitivity and high alertness to vessels and nets of tuna, when the closing and settling rate of the purse seine cannot keep up with the fish school swimming in the process of catching tuna, fish school escapes easily, and the purse seining has a greater probability of empty rate, which affects the catching efficiency of fishing. There is still room for improvement.
    SUMMARY The object of the present disclosure is to provide an auxiliary decision-making system for tuna purse seine precise fishing and a method thereof, which can detect and control the position state relationship between purse seine and fish school in real time, and improve fishing efficiency. The above technical object of the present disclosure is achieved by the following technical scheme. An auxiliary decision-making system for tuna purse seine precise fishing comprises a vessel and purse seine, and further comprises a fishing sonar for detecting fish school to obtain fish school position information, a monitoring device installed on the vessel to monitor and acquire purse seine state information, and a control device for controlling the vessel and the purse seine in response to the fish school position information and the purse seine state information, wherein; the monitoring device comprises a plurality of GPS positioning devices which are installed on the float line of the purse seine to detect the horizontal position of the float line on the water, and a plurality of underwater acoustic beacons which are installed on the bottom line and the netting panels of the purse seine to detect the spatial position; the purse seine state information comprises horizontal position information detected and acquired by the GPS positioning devices and relative spatial position information of a plurality of points detected and acquired by underwater acoustic beacons.
    Preferably, the control device comprises a receiving device which is installed on the vessel for receiving the purse seine state information acquired by the monitoring device and the fish school position information acquired by the fishing sonar; a host coupled to the receiving device to reconstruct the three-dimensional shape of the purse seine according to the purse seine state information, and calculate the change trend in combination with the detected fish school position information to output control parameters; a display coupled to the host for displaying the reconstructed three-dimensional shape and the detected and acquired fish school position information.
    Preferably, the control device calculates and acquires the change trend information of settlement and closure of purse seine; the control parameters output by the control device comprise the movement direction and speed parameters for controlling the vessel and the operation parameters for controlling the net closing of the purse seine.
    Preferably, a plurality of underwater acoustic beacons are uniformly installed on the bottom line and the netting panels of the purse seine.
    An auxiliary decision-making method for tuna purse seine precise fishing comprises the steps of: detecting, by the fishing sonar installed on the vessel, the fish school to obtain the fish school position information; detecting, by the monitoring device installed on the purse seine, the purse seine state to obtain the purse seine state information; receiving, by the control device, the purse seine state information and reconstructing the three-dimensional shape of the purse seine, carrying out prediction calculation in combination with the fish school position information, and feeding back and outputting the control parameters for controlling the movement of the vessel and the net closing of the purse seine; fishing according to the feedback control parameters.
    Preferably, the prediction calculation and feedback of the control device specifically comprises: carrying out update and judgment in real time to acquire the movement trend of the fish school according to the fish school position information detected in real time and the fish school position information at the previous moment; acquiring the horizontal position information of the purse seine according to the GPS positioning devices installed on the float line, and detecting and acquiring the relative spatial position information of each part on the purse seine according to a plurality of underwater acoustic beacons uniformly installed on the bottom line and the netting panels of the purse seine; reconstructing and obtaining the three-dimensional shape of the purse seine according to the horizontal position information of the purse seine state information and the relative spatial position information of each point obtained by monitoring; calculating the settlement and closing change of the purse seine, and calculating and outputting the control parameters that make the detected fish school located in the middle of the purse seine, wherein the control parameters comprise the movement direction and speed of the vessel, the closing direction and time point of the purse seine.
    To sum up, the present disclosure has the following beneficial effects. The underwater fish school position information is detected by the fishing sonar. The purse seine state information is detected and acquired by the GPS positioning devices and a plurality of underwater acoustic beacons of the monitoring device. The control device combines the fish school position information with the purse seine state information in real time, can effectively control the position state relationship between the purse seine and the fish school, and always keep the fish school in the middle of the purse seine, so that the system can better control the actual net closing of the purse seine and improve the fish school catching efficiency.
    BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic block diagram of the system.
    DETAILED DESCRIPTION The present disclosure will be further described in detail with reference to the accompanying drawings.
    The horizontal fishing sonar can detect the fish swimming in the purse seine. However, due to the weak acoustic reflection characteristic of the purse seine, the existing fishing sonar cannot detect the dynamic change process of the purse seine, and cannot display the fish school and nets synchronously in real time through the fishing sonar, which cannot guide the closing direction and timing of the purse seine and affects the catching efficiency of the purse seine. The technology of real-time synchronous display of tuna fish school and the purse seine shape is basically a blank both domestic and abroad.
    According to one or more embodiments, an auxiliary decision-making system for tuna purse seine precise fishing is disclosed. As shown in FIG. 1, the system comprises avessel, a purse seine, a fishing sonar, a monitoring device and a control device.
    The fishing sonar detects fish school to obtain fish school position information. The purse seine comprises a float line, bottom line and netting panels. The purse seine is pulled by a plurality of towboats to cast the net to surround tuna fish school. There is a correlation between the underwater three-dimensional shape of purse seine and the position of tuna fish school, ensuring that fish school is located in the middle of purse seine can increase the probability of successful fishing.
    The monitoring device detects and acquires purse seine state information, which comprises a plurality of GPS positioning devices installed on the float line to detect the horizontal position of the float line on the water, and a plurality of underwater acoustic beacons uniformly installed on the bottom line and the netting panels to detect and acquire the relative underwater spatial positions of each part of the purse seine. After the horizontal position is obtained by the GPS positioning devices, the relative spatial position of each part of the purse seine 1s obtained by a plurality of underwater acoustic beacons, and then the purse seine state information can be obtained.
    The control device comprises a receiving device for receiving the fish school position information detected by the fishing sonar and the purse seine state information obtained by the monitoring device. Specifically, the signal is transmitted and received by the transducer of the fishing sonar, and the fish school position information is transmitted after being received and processed by the digital-to-analog converter and the data processor. The position signals of each point on the purse seine sent by a plurality of underwater acoustic beacons are received by a hydrophone array and is further transmitted and processed.
    5 The control device further comprises a host coupled to the receiving device to process the purse seine state information and the fish school position information and output control parameters, and a display for the operator to observe. According to the received purse seine state information, the host analyzes the spatial position of each part of the purse seine in real time, reconstructs the underwater three-dimensional shape of the purse seine, and calculates and acquires the change trend information of the settlement and closure of the purse seine. According to the three-dimensional shape and the fish school position information, visualization processing is carried out, and the visualization processing results are output to the display for display in real time. Through the transposition of a data acquiring interface of a horizontal fishing sonar, the scanning echo signal and the beam angle of the horizontal fishing sonar are acquired in real time. After three-dimensional display visualization processing, the three-dimensional spatial position of fish school is displayed in real time, and the movement trend of fish school is predicted according to the position prediction algorithm (such as a Kalman filter). The control device evaluates the optimal purse seine control parameters through real-time monitoring and trend prediction of dynamic changes of fish school position and net shape, and outputs the parameters for reference control by ship operators. The control parameters comprise movement direction and speed parameters for controlling the vessel and the operation parameters for controlling the net closing of the purse seine, which provides decision-making basis for controlling ships and controlling nets, and realizes intelligent and precise fishing process.
    The system consists of a vessel, a purse seine, a fishing sonar, a monitoring device and a control device of purse seine. The horizontal fishing sonar transmits and receives signals through transducers. The analog signals are transmitted to the digital-to-analog converter and the data processor through the host unit of the horizontal fishing sonar to obtain the three-dimensional coordinates of fish school, i.e. fish school position information, and the data is transmitted to the host of the control device. The positioning information of the purse seine is obtained by the positions of a plurality of underwater acoustic beacons transmitting ultrasonic signals in real time. The signals of the plurality of underwater acoustic beacons are received through a hydrophone array, and the position information of each underwater acoustic beacon is calculated through a host, thereby calculating the three-dimensional position of each part of the purse seine. The fish school three-dimensional information and the purse seine state information are transmitted to the host at the same time and are displayed in the display. The three states are displayed in real time according to the fish school three-dimensional information, the purse seine state information and the vessel state information. Each state is updated through the next real-time data, and the movement direction and speed of fish school, purse seine and the vessel are calculated according to the adjacent state data, ensuring that fish school is in the middle of purse seine. According to the three states, the proposed movement speed and direction of the vessel are fed back and displayed and the purse seine shape is controlled to ensure that fish school does not escape, which can provide reference for ship operators or intelligently control purse seine operation.
    According to one or more embodiments, an auxiliary decision-making method for precise tuna purse seine fishing is disclosed, which comprises the steps of: detecting, by the fishing sonar installed on the vessel, the fish school to obtain the fish school position information; detecting, by the monitoring device installed on the purse seine, the purse seine state to obtain the purse seine state information; receiving, by the control device, the purse seine state information and reconstructing the three-dimensional shape of the purse seine, carrying out prediction calculation in combination with the fish school position information, and feeding back and outputting the control parameters for controlling the movement of the vessel and the net closing of the purse seine; fishing according to the feedback control parameters.
    Specifically, the prediction calculation and feedback of the control device specifically comprises: carrying out update and judgment in real time to acquire the movement trend of the fish school according to the fish school position information detected in real time and the fish school position information at the previous moment; acquiring the horizontal position information of the purse seine according to the GPS positioning devices installed on the float line, and detecting and acquiring the relative spatial position information of each part on the purse seine according to a plurality of underwater acoustic beacons uniformly installed on the bottom line and the netting panels of the purse seine; reconstructing and obtaining the three-dimensional shape of the purse seine according to the horizontal position information of the purse seine state information and the relative spatial position information of each point obtained by monitoring; calculating the settlement and closing change of the purse seine, and calculating and outputting the control parameters that make the detected fish school located in the middle of the purse seine, wherein the control parameters comprise the movement direction and speed of the vessel, the net shape, the closing direction and time point of the purse seine.
    This specific embodiment is only an explanation of the disclosure, rather than a limitation on the disclosure. After reading this specification, those skilled in the art can modify this embodiment without creative contribution as needed, which is protected by the patent law as long as it is within the scope of the claims of the disclosure.
    权利要求:
    Claims (6)
    [1]
    -8- Conclusions l. Auxiliary decision-making system for precise purse seine fishing for tuna, the decision-making system comprising a vessel and a purse seine, the decision-making system further comprising a fish sonar for detecting a fish school to obtain fish school position information, a monitoring device installed on the vessel to monitor and monitor purse seine condition information and a controller for controlling the vessel and purse seine in response to said school position information and purse seine condition information, wherein: the monitor includes a plurality of GPS positioning devices installed on the powerline of the purse seine to monitor the horizontal position of detect the driftline on the water, and a plurality of acoustic underwater beacons installed on the bottomline and net panels of the purse seine to detect the spatial position; wherein the purse seine state information includes horizontal position information detected and obtained by the GPS positioners and relative spatial position information of a plurality of points detected and obtained by underwater acoustic beacons.
    [2]
    The auxiliary decision-making system for precise purse seine fishing for tuna according to claim 1, wherein the control device comprises: a receiving device installed on the vessel for receiving the purse seine condition information obtained by the monitoring device and the fish school position information obtained by the fish sonar ; a host coupled to the receiving device to reconstruct the three-dimensional shape of the purse seine according to the purse seine condition information, and calculate the change trend in combination with the detected fish school condition information to output control parameters; a screen coupled to the host for displaying the reconstructed three-dimensional shape and the detected and acquired fish school position information.
    [3]
    3. Aid decision-making system for precise purse seine fishing for tuna according to
    29. Claim 2, wherein the controller calculates and obtains the change trend information of settling and closing of the purse seine; wherein the control parameters issued by the control device include the direction of movement and speed parameters for controlling the vessel and the operating parameters for controlling the net closure of the purse seine.
    [4]
    The auxiliary decision-making system for precise purse seine fishing for tuna according to claim 1, wherein a plurality of acoustic underwater beacons are uniformly installed on the bottom line and net panels of the purse seine.
    [5]
    5. Auxiliary decision-making method for precise tuna purse seine fishing, wherein the decision-making method comprises the following steps: detecting the fish school by means of the fish sonar installed on the vessel to obtain the fish school position information; detecting the purse seine condition by the monitoring device installed on the purse seine to obtain the purse seine condition information; receiving the purse seine condition information through the controller and reconstructing the three-dimensional shape of the purse seine, performing prediction calculation in combination with the fish school position information, and feeding back and outputting the control parameters for controlling the movement of the vessel and closing the net of the purse seine; fishing according to the feedback control parameters.
    [6]
    The auxiliary decision-making method for precise purse seine fishing for tuna according to claim 5, wherein the prediction calculation and feedback from the controller specifically comprises: performing real-time updating and evaluation to determine the movement trend of the shoal according to the shoal position information detected in real time. becomes and obtain the fish school position information at the previous time; obtaining the horizontal position information of the purse seine according to the GPS positioning devices installed on the driveline, and detecting and obtaining the relative spatial position information of each part on the purse seine according to a plurality of underwater acoustic beacons uniformly positioned on the bottom line
    - 10 - and the purse seine net panels are installed; reconstructing and obtaining the three-dimensional shape of the purse seine according to the horizontal position information of the purse seine state information and the relative spatial position information of each point obtained by monitoring;
    calculating the settling and closing change of the purse seine, and calculating and issuing the control parameters that make the detected school of fish located in the middle of the purse seine, the control parameters being the vessel movement direction and speed, the closing direction and include the time point of the purse seine.
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    同族专利:
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    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CN202010874834.0A|CN111955425A|2020-08-27|2020-08-27|Auxiliary decision-making system and method for accurate capture of tuna seine|
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