| The light harvesting lamp plays an important role in the modern light induced fishery such as the operation of the sidelifting net of the autumn cuttlefish.The LED light harvesting lamp has a wide application market in the light induced fishery due to its main characteristics of energy saving and environmental protection.It is an important way to analyze the illumination distribution of light field to study the phototaxis fish that need suitable illumination range cluster.It is of great significance to understand the underwater illumination distribution and its influencing factors of LED fishing lamp for improving the fishing efficiency of target fish species.This paper introduces the current situation of the research on the light trapping and the factors influencing the light trapping and gathering of the saury,and summarizes the main factors affecting the fish colony from the perspectives of the fish vision and the characteristics of the light tending,the optical characteristics of the sea water,the optical properties and the configuration of the fish collecting lamp.Through the self-designed single lamp ball water tank simulation experiment and the single lamp plate static water tank experiment,the single variable and multi factor conditions are controlled,and the light entering the water is analyzed The main conclusions are as follows:The illumination line of LED fish collecting lamp in autumn cuttlefish is generally symmetrical distribution.The illumination under the light source is dense and large,and the illumination value decreases obviously with the increase of distance.With the increase of depth,the uniformity of illumination is large.At the same depth,the illuminance in the x-axis and y-axis direction is increasing first and then decreasing.With the increase of the installation angle,the illuminance decreases gradually.The larger the installation angle is,the smaller the light attenuation rate is.The illuminance uniformity increases with the angle.With the increase of the current,the light intensity gradually increases.When the light passes through the water surface,the greater the current,the greater the illumination value,the greater the light attenuation,and the smaller the uniformity of illumination.After the light penetrates the water surface,the illuminance increases with the increase of current,the attenuation rate also increases,and the uniformity of illuminance decreases with the increase of current.With the increase of salinity,the illuminance decreases,and with the increase of salinity,the attenuation of light increases.With the increase of current,the illuminance increases,and the attenuation rate also increases.After adding salt,the change rate of illuminance is the same at a single angle,and the increase of salinity has a restraining effect on the attenuation of illuminance.With the increase of the angle,the attenuation rate of the light decreases.The smaller the attenuation rate of the light is,the better.But with the increase of the angle,the illuminance value is decreasing.Although the attenuation rate of illuminance is small when the installation angle is 75 °,the illuminance value is low when the installation angle is 75 °.Considering the influence of angle and salinity on the illuminance distribution,the installation angle is more suitable when the installation angle is 60 °.This paper mainly analyzes the illumination distribution of LED fish collecting lamp in different installation angles,through different current and different water salinity in different depths,in order to provide reference for understanding the illumination of LED fish collecting lamp underwater light field,and provide support for optimizing the reasonable configuration of LED fish collecting lamp in practical application,more and more attention has been paid to environmental protection issues.Led fish collecting lamp of light induced mid autumn swordfish will be more and more widely used.The research on LED fish collecting lamp has great practical significance. |
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