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Automatic fry grading system

An automatic grading and fry technology, applied in fish farming, measuring devices, instruments, etc., can solve the problems of improving accuracy, shortening separation time, difficult grading, etc., achieving excellent anti-fouling, avoiding grading confusion, and convenient operation. Effect

Active Publication Date: 2018-01-23
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fish fry classification device of the invention can adjust the thickness and interval of the grids according to the requirements of the target specifications, so as to screen and separate fish of different specifications in a short time, shorten the separation time and avoid injury and death of fish bodies. There is still room for improvement. Fry can swim freely in the device, and it is difficult to classify without passing through the grid, and the accuracy of classification needs to be improved

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0022] Such as Figure 1-3 As shown, the fish fry automatic grading system includes a transparent tube 4, a grading tank 10 connected to the transparent tube 4, an industrial computer 6 connected to the grading tank 10, the angle between the transparent tube and the horizontal line is 3 ° ~ 20 °, the transparent tube 4 The inlet end is connected to the hose 1, and the hose 1 is connected to the pool 8 through a trough with a slit, generally enough for only one fish to pass through, and the fish entering the slit quickly reaches the grading mechanism under the action of the water flow to avoid grading confusion, and the pool is close to the trough The two sides are concave arc-shaped and the inner wall is coated with dark-colored paint. The radian of the concave arc is π / 4 according to the formula It is concluded that (where S is the thickness of the concave arc, θ is the radian, h is the height of the pool, g is the weight of the pool, and L is the arc length), the setting of...

Embodiment 2

[0027] Such as Figure 1-3 Shown, during the actual application of this fry automatic grading system:

[0028] First, the mechanical and electrical control parameters are adjusted;

[0029] 1) When the fish is ready, the two sides of the pool 8 near the tank are concave arc-shaped and the inner wall is coated with dark-colored paint. The inner wall of the pool 8 of the arc is coated with dark-colored paint, which uses the characteristic that fish like to hide in the dark to further guide the fish to swim to the entrance of the tank. The fish pass through the opener at the same time to realize the classification of one fish at a time, and the fish entering the narrow slit quickly reach the transparent tube 4 under the action of the water flow for shooting and grading;

[0030] 2) Start the device button on the industrial computer 6;

[0031] 3) The fish pass through the transparent tube 4 through the action of running water;

[0032] 4) The CCD camera 3 takes pictures of th...

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Abstract

The invention discloses an automatic fry grading system which comprises a transparent pipe, a grading tank connected with the transparent pipe and an industrial personal computer connected with the grading tank. The inlet end of the transparent pipe is connected with a hose which is connected with a pond through a water tank with a slot. The outlet end of the transparent pipe is connected with thegrading tank. The outlet end of the grading tank is connected with a plurality of grading pipes. A CCD camera is arranged on the side face of the transparent pipe and connected with the industrial personal computer. The industrial personal computer is connected with a swing arm in the grading tank. The industrial personal computer is connected with valves at the inlet ends of the grading pipes. The automatic fry grading system can rapidly grade fish and is high in grading efficiency, accurate, automatic in grading process control, high in intelligent degree and good in safety.

Description

technical field [0001] The invention belongs to the technical field of fish grading, and in particular relates to an automatic grading system for fry. Background technique [0002] A method of studying fish migration and fish stocks. Mark the fish caught in natural waters and put them back into the original waters. When they are recaptured, they can be used to study the migration, distribution, growth and resources of fish. In 1886, Petersen et al. used the method of marking fish to estimate the size and mortality of fish populations in closed water bodies. The tagged releasing technology was developed from this, and now RFID radio frequency tags are often used to inject fish into fish for research. Before injecting the RFID radio frequency tag, it is necessary to classify the type, age, length, etc. of the tagged fish. The length classification needs to be measured one by one. The process is cumbersome, so it is necessary to design a device or method. Most of the existin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/95G01B11/02
Inventor 李丹丹张建设江丽华谢佳彦陈文静朱爱意
Owner ZHEJIANG OCEAN UNIV
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