Monitoring device in fish spawning site protection area

Abstract

The invention discloses a monitoring device in a fish spawning site protection area and aims at providing a monitoring device through which the visual angle range of monitoring shooting / photographing of a shooting device or a photographing device of the monitoring device for a spawning site can be effectively enlarged on the premise that the endurance time of the monitoring device is not affected. The monitoring device comprises a buoyancy device, a connecting rope, a supporting frame, a transparent box, a vertical guide pipe, a piston, a lower limiting block, a reset spring, a vertical flow guiding pipe and a cleaning flow guiding pipe, wherein the transparent box is rotationally arranged on the supporting frame through a vertical rotating shaft, the vertical guide pipe is arranged on the supporting frame, the piston is arranged in the vertical guide pipe in a sliding manner, the lower limiting block is arranged on the inner side face of the vertical guide pipe and located below the piston, the piston can be moved downwards and reset through the reset spring, the vertical flow guiding pipe is arranged on the supporting frame, and the cleaning flow guiding pipe is arranged on the supporting frame. The shooting device and / or the photographing device are / is arranged in the transparent box. One end of the vertical rotating shaft stretches into the vertical flow guiding pipe, and a drive impeller is arranged on the vertical rotating shaft and located in the vertical flow guiding pipe.

Description

technical field [0001] The invention relates to a monitoring device, in particular to a monitoring device for a fish spawning ground protection area. Background technique [0002] Fish spawning grounds are waters where fish and shrimp gather and breed, and are one of the most important physical environmental factors for fish. Most of the spawning grounds of fish and shrimp in the ocean are near the estuaries of large rivers along the coast. For example, the famous Jiangsu Lusi Fishing Ground in China is a spawning ground for large yellow croakers, small yellow croakers, pomfrets, and squids; Zhejiang Zhoushan Fishing Ground is a spawning ground for hairtail, Large yellow croaker, squid and other spawning grounds. [0003] The monitoring of fish spawning grounds is one of the important means to study fish reproduction and reproduction. One of the current monitoring devices for fish spawning grounds is to use camera devices or photographing devices to photograph fish spawning...

AI Technical Summary

Problems solved by technology

At present, the monitoring device of this fish spawning ground that adopts a camera or a camera is usually that the camera or a camera is fixedly installed underwater, and the spawning ground of a certain viewing angle is monitored and photographed by the camera or a camera. Taking pictures, this kind of monitoring device is limited by the angle of view, it is difficult to conduct all-round monitoring, shooting / photographing of fish spawning grounds

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