Fish length measurement device and measurement method applied to selective test

A technology of measuring device and measuring method, which is applied in the direction of measuring device, optical device, instrument, etc., can solve the problems of manual measurement and inability to measure the length of fish body in time, and achieve accurate measurement, neat arrangement of fish, and increased friction Effect

Inactive Publication Date: 2019-07-23
SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The problem with this method is that it needs to manually measure a large number of fish samples, and then classify and organize the data of these samples
However, when the number of fish bodies caught is large, it is impossible to measure the length of all fish bodies in time, and it must be measured by sampling

Method used

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  • Fish length measurement device and measurement method applied to selective test
  • Fish length measurement device and measurement method applied to selective test

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Embodiment Construction

[0025] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so it only shows the composition related to the present invention.

[0026] like figure 1 As shown, a fish body length measurement device for selective testing includes: a turntable 1, an outlet 7 fixed in the tangential direction of the turntable 1, and a measurement channel 8 corresponding to the position of the exit 7, the turntable 1 can rotate, and 1 is provided with baffles 6 in the circumferential direction. When fish fall onto the turntable 1, the centrifugal force generated by the rotation of the turntable 1 can adjust the fish to be arranged side by side along the circumferential direction of the turntable 1; The supporting member 10 can rotate; the side wall of the measuring channel 8 is provided wi...

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Abstract

The invention discloses a fish length measurement device and measurement method applied to a selective test. The device comprises a first collection plate, a second collection plate and an installation piece; at least one first collection cavity is arranged on the first collection plate along the length direction, and at least one first lamp bead is installed on the inner wall of the first collection cavity; at least one second collection cavity is arranged on the second collection plate along the length direction, and at least one second lamp bead is installed on the inner wall of the secondcollection cavity; the first collection plate and the second collection plate are installed with the back to each other, and the two collection plates are fixed via an installation piece; a water pumpis connected with one side of the first collection plate and one side of the second collection plate, and the first collection plate and the second collection plate can be closed via the pumping of the water pump.

Description

technical field [0001] The invention relates to a measuring device, in particular to a fish body length measuring device and a measuring method for selective experiments. Background technique [0002] Research on the selectivity of fishing gear is the basis and premise of designing and using environmentally friendly fishing gear and fishing methods. Among them, the selectivity of net fishing gear is an important part of related research. The selectivity of net fishing gear focuses on mesh selectivity. At present, the mesh selectivity research of net fishing gear is generally carried out by selectivity test. By conducting corresponding experiments, measuring the length of the fish body, and constructing a mathematical model to estimate the mesh selectivity. The problem with this method is that it needs to manually measure a large number of fish samples, and then classify and organize the data of these samples. However, when the number of fish bodies caught is large, it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/02
CPCG01B11/022
Inventor 杨炳忠
Owner SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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