| With the continuous development of the lighting bag seiner,the vicious competition of the total power of fishing lamp still exists in the actual production.Especially in recent years,the lighting bag seiner increased the total power of the fishing lamp again and again blindly.In the relatively crowded working area,the light interference between the fishing vessels is also more obvious,seriously affecting the operational effect,which gives the rational use of fish lamp has brought great difficulties,research and solve the situation in line with China's domestic capsule light purse network development The optimization of the configuration problem is placed in front of us urgent and necessary tasks.Based on this,this paper takes the actual engineering project of the optimized selection of the fish and fish in the Marine Fisheries Research Institute of Zhejiang Province,and makes a systematic and comprehensive theoretical and experimental study on the distribution of the light field in the underwater target area.This paper first summarizes the research background and current situation of the fishermen with foggy light fence,introduces the present situation of the development of the purse fence,the light habit of mackerel and the basic theory of the characteristics of the fish lamp.The mathematic expression of the attenuation of the point light source in the air and the underwater field is deduced from the point of view of the actual fishing vessel operation.The calculation model of the light field is applied to the self-developed underwater illumination simulation and light field illumination software,which provides a theoretical calculation method for the study of the illumination characteristics of the light field.The realization of the numerical calculation of the underwater measurement point,the study of the attenuation of the illuminance on the specified direction and the effective volume of the water volume are provided.It provides an effective method for assessing the distribution of underwater illumination of the fishing vessel and the setting of the fish lamp.Means and basis.Aiming at the two main influencing factors of the measured value in the external measurement environment,the influence factors of the two boundary value of the introduced boundary and the deviation of the measured points are analyzed,and the methods and related techniques to improve the accuracy of the illumination distribution simulation are discussed and studied,in order to reduce the actual test boundary threshold is difficult to grasp the impact of providing the basis for the use of the most value or median method to amend the critical distance,through a reasonable selection of complex sea environment Can be quantified to reduce the impact of ocean currents on the target measurements.This paper analyzes the importance of the arrangement of the fish-litter and the significance of the underwater illumination distribution of the fishing vessel,and under the premise of analyzing the domestic and foreign research results,this paper puts forward the effective trap water volume based on the underwater illumination calculation superposition theory,combined with the actual operation of fishing vessel case analysis of the proposed method of scientific and effective,and finally the algorithm applied to the underwater illumination simulation system,to achieve accurate measurement of fishing water around the vessel Under the illumination distribution and the ability to effectively trap the scope of the forecast.This has a significant practical significance for the construction of domestic purging fence.This paper studies the rational disposition of the fish lamp with the fishing vessel.The results show that when the fishing vessel is equipped with 1kW water metal halide fish lamp,the optimum lamp height is 8.2m,the lamp distance is 0.75 m,the total power configuration is 45 kW.When the fishing vessel is equipped with 2kW water metal halide lamp,The best lamp is optional 8.2m,the light distance is 0.75 m,the total power configuration is optional 84kW;when the fishing vessel disposes the 3kW type water metal halide lamp,its best lamp is high elective 8.2m,the light distance is 0.71 m,The total power configuration for the 141kW;when the fishing vessel configuration 4kWtype water metal halide set fish lamp,the best light optional 8.2m,light distance of 0.71 m,the total power configuration is 220 kW.The main research work and innovation in this paper is under below.This paper analyzes the present situation and the difficulties and shortcomings of the underwater light illumination forecasting in the domestic fishing vessel,and puts forward the evaluation and prediction model of the new effective trap water volume according to the light source superposition method.Studied the light distribution characteristics of different fish lamps,taking full account of the characteristics of its anisotropy of the light source,combined with the point light source calculation method of light field distribution gives a new calculation program,which is different from the previous point light source method The mathematical model of the light source to the underwater illumination is deduced,and the calculation model of the light field based on the superposition method is established.The calculation model of the light field is applied to the calculation of the actual case.The independent development of a targeted package of the lighting bag seiner illumination distribution analysis software: set fish lamp underwater illumination simulation and light field calculation software [Abbreviation: SeaExplor] V1.0.Gives a variety of configurations under the light field of different illumination distribution,analysis of its configuration effect.The error correction is introduced by using the measured data at sea,and the boundary constraint and the deviation of the measured points in the actual measurement are discussed and the corresponding strategies are taken.The effects of different metal halide lamp configurations on the effect of the lurefishing range were studied.The distribution of the underwater illuminance distribution of different types of metal halide lamps was analyzed and analyzed.The combination of the actual fishing vessels "ZheLing Yu23391" can achieve the best trapping effect,and according to the effective trapping of water volume to establish a relatively perfect evaluation of the allocation system. |
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