Design Of Artificial Reef And Its Imaging System

Due to overfishing and environmental pollution,global fishery resources have been decreasing continually,large amount of natural fishing ground have been damaged heavily.At present,the method of ocean pasture construction which takes advantage of artific ial reef to repair natural fishing ground have been developed rapidly in coastal countries and regions and acquired better effect.The variety and functions of artific ial reef are multifariously,however the effect of gathering fish is one of the important indicators to judge rationality of artific ial reef.Recently,the effect of gathering fish of artific ial reef is analyzed by pictures and video which aquanaut filmed in reef area,which is not only limited by seasons and temperature,but also waste great amount of manpower and material resources.A kind of green power generating artific ial reef and its imaging system had been designed,which is not merely a good life environment provision for fish to improve the marine ecological environment but also a real-time supervision of artific ial reef,its stabilit y,its location of artific ial reef and its process of throwing without the limitations such as seasons and temperature.The image data of artificial fish reef can be viewed on the computer at any time through the network.The imaging system provides the basis for design and improvement of artificial reef,and is helpful to ocean pasture construction.The artific ial reef consists of three parts: body of artificial reef,body of floating island,and load lifting device which connect them.The imaging system includes three parts: solar power device mounted on the body of floating island,pc Duino V3 embedded board,and the underwater photography device.Solar panel can provide energy for the underwater photography device and LED lights under the body of artific ial reef,pc Duino V3 embedded board controls underwater camera for real-time supervision of artific ial reef in related sites.Fluid simulation of the designed reef is done with Fluent software in two kinds of layout form by setting even different velocity b etween 0.2 m/s and 1.4 m/s.Character of upwelling and back eddy flows of this two kinds of layout form.According to analysis and comparison with the two sets of data,it is concluded that the layout scheme of enfilade make flow field effect well,this layout form plays an important role in throwing artific ial reef.Hardware platform of imaging system of a reef is built on pc Duino V3 embedded board,Software platform is developed in basis of Linux operating system.In this paper selection of embedded board,USB camera,design of embedded operating system,and construction of the development platform,installing motion,configuration of image parameters and share system of Web files are done well,image acquisition and transmission underwater is achieved.Finally,3D printing of the artific ial reef at a reduce scale,and put it into a fish box for simulation experiment,in which,it is observed that the artific ial reef has a certain effect of gathering fish and the design realize the function of underwater image acquisition and wireless transmission.The simulation experiment shows that rationality of the artific ial reef.By the artific ial reef and its imaging system can be realized the automatic monitoring of marine ranch artificial reef area.