Fish preference swimming speed measuring device

Abstract

The invention discloses a fish preference swimming speed measuring device which comprises a water tank. Two symmetrically-distributed inclined plates are arranged in the water tank, grids are connected between the two ends of the two inclined plates, the inclined plates and the grids jointly form a speed measuring water channel with a trapezoidal cross section, the length of the shorter bottom ofa trapezoid is D1, the length of the longer bottom of the trapezoid is D2, the height is H, and the ratio of D1 to D2 to H is 1:3:17; a trapezoidal top transparent cover body matched with the speed measuring water channel is also arranged, a plurality of parallel area boundaries are arranged on the transparent cover body, the number of the area boundaries is 5-8, and a water pump located at the smaller end of the speed measuring water channel is further arranged in the water tank; and meanwhile, an inner blocking net with the top open is further arranged in the speed measuring water channel, the cross section of the inner blocking net is rectangular, the length of the shorter edges of a rectangle is D1, the length of the longer edges of the rectangle is H, a camera is arranged above the speed measuring water channel, and the water pump and the camera are both controlled in a unified manner through a control system.

Description

Technical field[0001]The invention relates to a measuring device for aquatic animal movement parameters, in particular to a device for measuring the preferred swimming speed of fish.Background technique[0002]Swimming is closely related to the survival of fish and directly affects their behaviors and habits such as predation, avoidance, and migration. The preferred swimming speed refers to the most common swimming speed of fishes in a specific environmental water body. Its formation is the result of long-term adaptation of fish to the living environment. Carrying out research on preferred swimming speed not only helps to better understand the suitable habitat environment of fish, but also provides reference materials for the selection of suitable water flow speed for the growth of farmed fish. Therefore, it has important theoretical significance and application value. Traditional measuring devices are mostly obliquely placed long rectangular waterways. A water storage tank is install...

AI Technical Summary

Problems solved by technology

This measurement device uses a water pump to transfer and drive water through the pipeline, so the work efficiency is relatively low, which causes a waste of energy to a certain extent, and needs to occupy a large space, and the overall cost is high. At the same time, the traditional measurement device During the working process, there are always ripples on the surface of the water body, making it difficult for the experimental subjects to observe

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