KR102466516B1 - A device for measuring catches and aquatic resources by depth of the fishery - Google Patents

Abstract

Provided is a measuring device for fishery resource management which comprises: a buoy positioned with buoyancy on the sea level; a mooring line connected to a lower end of the buoy and having the other end connected to an upper end of a measuring unit; the measuring unit connected to the mooring line to measure fishery resources under the sea; and a fixing unit for fixing the measuring unit to a predetermined position so that an investigation target area under the sea can be fixedly measured, thereby having effects of stably measuring the investigation target area even under the sea in which a flow of ocean currents is large, and conveniently measuring observation of fishery resources.

Description

A device for measuring catches and aquatic resources by depth of the fishery}

The present invention relates to a measuring device for managing fish populations and fishery resources distributed in sea fishing grounds, which is fixedly installed as a line in a certain depth layer of the sea area to be measured and fishery resources and fishery resources in the direction directly below the depth of the sea area to be investigated during a set period. It relates to a measuring device for managing fishery resources by depth of fishery, which can check the distribution of the amount.

As the era of international maritime division approaches, the reduction of coastal fishing grounds is intensifying, and even the productivity of coastal fishing grounds is greatly declining. Therefore, the importance of creating fishery resources that can overcome this is emerging.

Korea is surrounded by the sea on three sides and has a very convenient geopolitical feature that can use fishery resources more efficiently, so interest in fishery resources is increasing day by day along with technological development. In addition, the importance of nutritional components of fishery resources collected or collected from the sea is being emphasized day by day, and the use of various fishery resources for an affluent life plays an important role in improving the quality of life of our people.

In each country, the EEZ (exclusive economic zone) system has been operated, and fishing grounds have been reduced accordingly, and the shortage of fishery resources is intensifying due to illegal fishing and overfishing. In addition, due to environmental pollution caused by industrial development, major fishing grounds are being polluted. Recently, with the addition of changes in the natural environment due to abnormal temperatures, the phenomenon of depletion of fishery resources, which are indispensable to our lives, is rapidly progressing.

The increase or decrease in fishery resources is directly related to the establishment of a production base, which is a condition for the existence of the fishery industry, and the production base of fishery products has a direct correlation with securing fishery resources. In order to improve the productivity of coastal fisheries, it is essential to manage fishery resources to induce an increase in the resources of high-value strategic fish species and to create a high-productivity ecological environment through artificial reef facilities and artificial seaweed development within the scope of maintaining the ecosystem.

Since the distribution and density of fish living in the sea change frequently depending on the physical, chemical, and biological characteristics of the sea area, accurately grasping the distribution of these environmental factors is the key to exploring fisheries. In the past, fishery search information acquired the environmental conditions of the fishery where it was caught so far, and predicted the sea area where the organism was likely to be distributed.

An object of the present invention is to provide a device capable of more stably observing the amount of fishery resources for the purpose of observing each water layer in a certain fishery.

Korean Patent Registration No. 10-1717218 discloses a load cell for measuring the tension of a line connected to the fishing gear so as to measure the load caused by the fish caught in the fishing gear; and an operating unit configured to calculate the measured value measured by the load cell, a display unit displaying data based on the calculated result, and a control unit configured to apply a control signal to the operating unit and the display unit, and installed on the vessel. Disclosed is an automatic catch estimation device comprising a. Korean Patent Registration No. 10-0771012 discloses a fixed network monitoring device that generates and transmits fixed network monitoring information including image capturing information of a fixed net and/or a fishing net provided in the fixed net, and receives the fixed network monitoring information and stores it in a database Disclosed is a fixed network monitoring system including a fixed network monitoring server that stores and guides through an administrator terminal, and a mobile communication system that receives and transmits the fixed network monitoring information from the fixed network monitoring device to the fixed network monitoring server.

In order to solve the problem that the existing devices and methods for observing fishery resources depend on the experience level of the operator or the fishing boat moves while searching for the sea area where the fish are concentrated, it takes a long time to investigate. It is intended to provide a device that is more stable and easier to observe in the depth layer.

A measuring device for managing fishery resources according to an embodiment of the present invention includes a buoy positioned on the sea level with buoyancy; a mooring line connected to the lower end of the buoy and the other end connected to the upper end of the measuring unit; a measurement unit connected to the mooring line and capable of measuring marine resources under the sea; It may consist of a fixing part for fixing the measuring part to a certain position so as to be able to measure the survey target area in the sea in a fixed manner.

The inside of the buoy may be filled with Styrofoam, and one or more solar panel frames may be installed on one side of the upper portion to send current generated by sunlight to a storage battery installed in the inside of the buoy or a measuring unit for charging.

The measuring unit may include a camera housing formed of a transparent and antifouling material, and a camera capable of capturing underwater images installed inside the camera housing. The fixing part is made of a material selected from at least one of SUS316, reinforced plastic, and stainless steel, and a fixing frame having a half-arc structure having a tube shape having a certain thickness and length and forming a curved part toward the top, and weights connected to both ends of the fixing frame. may be made up of

A measuring part may be installed in a curved part of the fixing frame, and the fixing part may be formed in a structure symmetrical to the left and right so that the measuring part is fixed at a predetermined position underwater.

The present invention has the effect of being able to more stably measure the area to be investigated even in the sea where the flow of ocean currents is large and to measure the amount of fishery resources in a simple way.

1 shows a perspective view of a measuring device for managing fishery resources of the present invention.
Figure 2 shows the buoy of the measuring device for managing fishery resources of the present invention.
Figure 3 shows a measuring unit of the measuring device for managing fishery resources of the present invention.
4 shows a fixed part of the measuring device for managing fishery resources according to the present invention.
5 is a measuring device for managing fishery resources of the present invention
6 shows the entire system of the measuring device for managing fishery resources according to the present invention.
7 shows horizontal and vertical line photographing results using a measuring device according to an embodiment of the present invention.
8 shows an example of image analysis using the visual census method using a camera capture volume according to an embodiment of the present invention.

Hereinafter, it will be described in detail with reference to the drawings related to the measuring device for managing fishery resources of the present invention.

1 shows a perspective view of a measuring device for managing fishery resources of the present invention. The measuring device for managing fishery resources of the present invention includes a buoy 100 located on the sea surface with buoyancy, a mooring line 200 connected to the lower end of the buoy and the other end connected to the upper end of the measuring unit, and a mooring line connected to the mooring line to measure It may consist of a measuring unit 400 capable of measuring fishery resources, and a fixing unit 300 that fixes the measuring unit so as to be able to measure a certain seabed in a fixed manner.

Figure 2 shows the buoy of the measuring device for managing fishery resources of the present invention. The buoy is a structure that can float on the surface of the sea with buoyancy. As an embodiment of the present invention, the inside of the buoy is filled with Styrofoam and the outer casing is made of polyurea material to ensure excellent strength and durability, while along the side of the buoy A rubber bumper is formed to protect the buoy from damage in case of collision with a ship or the like.

At least one solar panel frame 110 is installed on one side of the upper part of the buoy 100 of the present invention, and a storage battery (not shown) for storing current generated from the solar panel frame is installed on the inside or one side of the buoy. It can be.

According to the embodiment of the present invention, the cylindrical body housing made of SUS316 is located on the central pillar of the buoy, and inside, the location data and power control of the measuring device and observation data transmission are transmitted to the base station through a wireless transmission device, GPS, SOLAR controller, etc. It can be formed to enable control by wireless transmission.

A mooring fixing part fixed to the mooring line is installed at the bottom of the buoy, and the mooring fixing part may be preferably implemented in a ring shape. In addition, the mooring line 200 is formed to a certain length so as to extend to a certain depth of water, and a mooring line storage device in the form of a reel may be added. The mooring line storage device serves to unwind and wind the mooring line by power, and allows observation at a specific water depth by unwinding or winding the mooring line to a certain depth. A controller for controlling power input from the solar panel, a wireless transmitter capable of transmitting an image captured by a measurement unit to be described later, and a GPS may be additionally installed in the buoy.

Figure 3 shows a measuring unit of the measuring device for managing fishery resources of the present invention. The measuring unit 400 of the present invention includes a camera housing and a camera installed inside the camera housing so as to face the seabed. The camera of the present invention may be implemented with various conventional cameras, CCD cameras, and the like. Additionally, a storage battery (not shown) may be installed so that current generated by solar energy of the buoy may be stored and provided as energy for driving the camera. In addition, a sensor for measurement may be installed in the camera as a separate configuration from the underwater light.

The camera housing 410 of the present invention is made of an antifouling material so that marine attachments do not adhere even when installed in the sea for a long period of time as a waterproof frame to enable video recording of the camera installed therein, and has excellent durability such as SUS316 or reinforced plastic and is resistant to seawater. It is formed of a material that is resistant to water so that it can withstand water pressure in the range of 100 to 200 meters in depth.

The camera housing 410 has a cylindrical shape, and a convex fisheye lens 440 is formed at the lowermost end, and a closed separation space 430 is formed at the back of the fisheye lens, and a flat lens 420 connected to the separation space is formed. A space of the camera housing capable of accommodating the camera 450 is connected to the rear surface of the flat lens, and the camera lens unit inside the housing and the flat lens are fixed in contact with each other.

Since the fisheye lens 440 has a certain refractive index, it is possible to capture a wider area than the set image angle of the camera, so that the captured image is widened at regular intervals, so that a wide range of images can be collected.

The separation space 430 of the present invention forms a separation layer between the fish-eye lens and the flat lens. When the difference between air temperature and underwater water temperature is severe in winter or summer in a camera housing installed for seabed measurement, dew condensation is formed on the camera lens part, and blurry images can be transmitted while the housing and the external water temperature are balanced. Accordingly, the separation space can prevent problems in image collection due to condensation due to temperature difference.

The separation space can be filled with vacuum or distilled water, and can withstand water pressure while preventing condensation due to temperature control when the camera is lowered to a depth of 100m or more. In addition, the separation space may be formed as a space of preferably 1 mm to 10 mm as a space portion in which temperature transfer is not performed directly.

The flat lens 420 of the present invention is installed to come into contact with the lens unit of a camera installed inside the camera housing, and a scale ruler formed of a focus plate lattice for fixing the focus and measuring distance of the camera can be engraved on the plane of the flat lens. The scaler causes the camera to maintain a constant focus while recognizing the focus plate grid, and a photographed image can be analyzed as a standardized area by being photographed together with the focus plate.

The scaler is used to calculate the scale of the photographed image, and is provided as an index to investigate and analyze the distribution status of the species and population of seaweed, benthic animals, fish, etc. This is a possible effect.

4 shows a fixed part of the measuring device for managing fishery resources according to the present invention. The fixing part 300 of the present invention is preferably formed of a material having excellent durability and being resistant to seawater, such as SUS316, reinforced plastic, or stainless steel. The fixing part is composed of a fixed frame 320 having a half-arc structure forming a curved portion toward the top in a tube shape having a predetermined thickness and length, and weights 310 connected to both ends of the fixed frame.

The fixing frame 320 is formed so as to be left-right symmetrical, so that the left and right weights connected to the distal end are balanced. The mooring line and the measurement part are connected and installed in the curved part of the fixed frame through the medium of the fixing device. The fixing device may be implemented as a ring or a hinge, but is not limited thereto as long as it is possible to fix and separate the mooring line and the measuring device.

Weights are typically installed in subsea mooring devices and are installed at each end of the fixed frame. The weight of the present invention is smaller than the buoyancy of the buoy and is formed so that the measuring device can include a load that can be located in a certain amount of water.

Therefore, unlike conventional measuring devices in which a device connected to the movement of a buoy is also connected, the measuring device of the present invention can capture a certain seabed surface to be photographed in a fixed manner. In addition, even in the flow of the ocean current in the sea, the weights installed on the left and right distribute the center of gravity to the left and right, thereby maintaining a more stable balance, and even when the current is applied in one direction, the balance has a fast restoring force.

As in Example 1 of the fixing part shown in FIG. 5, the fixing part of the present invention is formed with fixing frames and weights on the front, rear, left and right sides, so that the weight is distributed in four directions and the measuring part connected to the curved part is more stably irradiated. It has the effect of being fixed to the location of the target area. Accordingly, the present invention has the effect of stably and conveniently observing and measuring the movement of fish in a fixed survey target area and the amount of fishery resources.

6 shows a power supply and communication connection diagram of the entire system of the measuring device for managing fishery resources according to the present invention. The present invention measures and photographs the environment in the vertical direction of the water area by taking underwater pictures from the measuring unit and connecting them with mooring ropes and fixing them in a set area, while transferring various environmental data and video data collected to a server on land using wireless communication. can be transmitted to the system.

A solar panel is installed at the top of the buoy located on the sea surface, and a power controller, data logger, GPS, LTE router, storage battery (battery), etc. are installed inside, and the power line and communication line are connected to the measuring part located on the sea bottom to measure the measurement device. Safe protection and easy maintenance are possible.

The measuring part connected to the measuring device fixing part charges the storage battery for the operation of the equipment with power drawn from the solar panel installed on the upper buoy, and through the application of the solar panel, the operating period of the observation device can be secured to the maximum. In addition, a light may be added separately from a camera unit for capturing an image, and sensors capable of measuring water temperature, dissolved oxygen, and the like at a corresponding water depth may be additionally coupled.

Observation data such as underwater images and water temperature, salinity, and dissolved oxygen collected from the measurement unit can be transferred to a sea level data logger through communication lines and collected, while transmitting to land servers or base stations through wireless devices. By connecting the cable line with the buoy along with the mooring wire rope, the buoy can be moored more safely and flexibly, and the sensor device necessary for measuring the marine environment on the seabed can be fixed to the subsea frame for filming and measurement. made it possible

<Example 1> Investigation of habitat biota using a measuring device for managing fishery resources

In Example 1, a qualitative survey of horizontal and vertical line movements of the seabed was conducted using the measuring device for managing fishery resources of the present invention. The contents of the survey were to investigate the distribution status of the species and population of seaweeds, benthic animals, and fish (including birds of prey) in the shooting area.

All fish inhabiting the surveyed area were accurately photographed for more than 5 minutes, and the fish species and population were identified to investigate the fish population status. Thereafter, the number of fish photographed was counted, the distribution range of the fish population in the survey target area was identified, the height and width of the population (species, number of individuals) were recorded, and the number of individuals was visually counted using a counter.

Figure 7 shows the results of vertical line shooting using the measuring device according to an embodiment of the present invention.

In the underwater space by calculating the horizontal (a) and vertical (b), the shooting volume (a x b) and the angle of incidence for a certain distance (A) between the camera and the subject from the vertical line photographed image according to Example 1 of the present invention. After figuring out the maximum recognition distance (A+B) of the appearing object within the scaler, record it. After setting the final visibility distance and installing the line, taking photos and videos at regular time intervals, measuring the area using a proportional formula (area of a pyramid) and calculating the density of habitat (individuals/㎥), and analyzing the community structure using the species, number of individuals, and habitat density It is possible.

In this analysis, the scaler formed on the flat lens of the present invention can be used to calculate the area measurement (square pyramid area) and habitat density (object / ㎥) using the final visual distance setting and proportional formula. In general, unlike in the water, there are image disturbance factors such as wave height and swell in the water, and the refractive index and distortion of light in the image taken by the underwater camera is different from the air layer of the water, so the actual distance measurement and size to the subject are obtained. It is difficult to confirm and materialize only with images, and in particular, it is difficult to measure the actual distance of the underwater object by compensating for the refractive index of light refracted while passing through the observation window and underwater.

The scaler of the present invention not only serves to provide a reference point so that it can be analyzed as a standardized area during image correction later at the same time as image acquisition, but also has an effect of determining the recognition distance of an appearing object. By forming a bonding surface in the overlapping area, there is an effect of presenting a criterion for interpreting the captured image.

The present invention is capable of measuring underwater, thus providing information on fishery resources more efficiently, and eliminating the measurement work that was performed in the filming of existing divers, thereby reducing the labor force accordingly, so it has industrial applicability.

100: buoy 110: solar panel frame
200: mooring line 300: fixing part
310: weight 320: fixed frame
400: measuring unit 410: camera housing
420: flat lens 430: separation space
440: fisheye lens 450: camera

Claims (3)

A buoy located on the sea surface with buoyancy, a mooring line connected to the lower end of the buoy and the other end connected to the upper end of the measuring unit, a measuring unit connected to the mooring line and capable of measuring aquatic resources in the sea, and the measuring unit measuring the depth layer under the sea to be investigated. It consists of a fixed part that maintains balance at a certain position so as to be measurable,
The measurement unit is formed of a camera housing made of a transparent and antifouling material, and a camera capable of underwater photography is installed inside the camera housing,
The fixing part is composed of a fixed frame having a half-arc structure forming a curved portion toward the top with a predetermined thickness and length, and weights connected to both ends of the fixed frame, characterized in that the fixed frame is formed to be left and right symmetrical. measuring device
The method according to claim 1, wherein the camera housing has a convex fisheye lens formed in a front part, a sealed space is formed on the rear surface of the fisheye lens, and a flat lens is coupled to the rear surface of the predetermined space, and a camera is accommodated on the rear surface of the flat lens. A measuring device for managing fishery resources, characterized in that a space is formed for delete

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