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Spawning site positioning inversion simulation method based on drifting roe embryo development time

A simulation method and spawning ground technology, applied in fish farming, CAD numerical modeling, animal husbandry, etc., can solve the problems of unfavorable fish spawning ground positioning and precise protection

Inactive Publication Date: 2020-10-23
CHONGQING JIAOTONG UNIVERSITY
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Problems solved by technology

The estimated spawning ground range is often 20 to 40 kilometers, some even up to 70 kilometers, and the calculation error can reach tens of kilometers, which is not conducive to the positioning of fish spawning grounds and precise protection

Method used

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  • Spawning site positioning inversion simulation method based on drifting roe embryo development time
  • Spawning site positioning inversion simulation method based on drifting roe embryo development time
  • Spawning site positioning inversion simulation method based on drifting roe embryo development time

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Embodiment Construction

[0055] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0056] like figure 1 As shown, the present invention discloses a spawning field location inversion simulation method based on the development time of drifting fish egg embryo body, including:

[0057] S1. Collect fish eggs at a preset detection position;

[0058] In the present invention, drifting fish eggs can be collected at typical or characteristic sections of river channels. Specifically, the fish eggs can be collected along the width direction of the river in the straight section where the river curvature coefficient is less than the preset threshold, so as to ensure that the fish eggs can be effectively collected and the total amount of fish eggs can be estimated.

[0059] S2, identifying the development time of the collected fish eggs to obtain the drifting time of the fish eggs;

[0060] As shown in Table 1, it is a comparison table of hatching time...

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Abstract

The invention discloses a spawning site positioning inversion simulation method based on drifting roe embryo development time. The method comprises the following steps of collecting roes at a preset detection position; identifying the development time of the collected roes to obtain the drifting time of the roes; establishing a gridding two-dimensional water flow model, and calculating the flow velocity of each grid node in the two-dimensional water flow model; and based on the flow velocity of each grid node in the two-dimensional water flow model and the drifting time of the roes, taking each collected fish roe motion as a simulation object to carry out inversion calculation, thereby realizing positioning of the spawning site. According to the method disclosed by the invention, the waterflow is gridded based on the two-dimensional water flow mathematical model, so that the flow field distribution of the water flow is calculated, and then the position of the fish spawning site is deduced and positioned according to the collection position and the drifting time of the fish roes. Compared with the mode that water flow is regarded as constant-speed fluid in the prior art, the difference of water flow speeds at different positions is considered, so that the positioning accuracy of the fish spawning site is greatly improved.

Description

technical field [0001] The invention relates to the technical field of positioning, in particular to a spawning field positioning inversion simulation method based on the development time of floating fish egg embryos. Background technique [0002] The Yangtze River is the third largest river in the world. The complex and diverse topography has created the diversity of habitats and species in the Yangtze River Basin. The types and quantities of fish resources occupy an important position in the world. Fish resources are indicative organisms for the evolution of the ecological environment of the Yangtze River, and the protection of fish resources is first of all the protection of their habitats, and the core of fish habitat protection is "three fields and one channel", namely spawning grounds, wintering grounds, cable The construction and protection of bait grounds and habitats for migratory passages. Spawning and smooth hatching of fish eggs are the basis for fish reproducti...

Claims

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Application Information

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IPC IPC(8): A01K61/17A01K61/10G06F30/23
CPCA01K61/17A01K61/10G06F30/23G06F2111/10G06F2113/08Y02A40/81
Inventor 童思陈蒋聘凤唐小娅蒋孜伟王啸李昌耀
Owner CHONGQING JIAOTONG UNIVERSITY
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