Study On The Relationship Among The Total Power Of Squid Jigging Vessel's Lamp,the Fish Luring Boundary And The Fishing Depth

In recent years,china has become a major producer,consumer and trading countries of squid.Not only in the inshore but also high sea,China's squid fishing boats account for a large part.Since introduced into China in the 1980 s,China's squid fishery has experienced from small to large,from the modified ship to the professional ship,from the inshore to the high sea by leaps and bounds.Nowadays,squid fishery has become an important part of China's high-sea fishery.However,in recent years,with the general decline of world fishery resources,in the high-sea field,the Argentine's fishing ground is in poor condition,and the catch of squid fishery is always in large fluctuations,with higher international oil prices and lower market price of squid,so there are a lot of uncertainties about the whole squid fishery.Especially high sea squid fishery,which is a high cost,high energy consumption mode of operation,need to be thought for many fishery practitioners about how to better reduce energy consumption.Fishing lamp,as an indispensable fishing equipment of squid fishery,is also a main part of squid fishery cost consumption.Fish lamp has gone from non-electrical fish lamp to metal halide lamp.Fish lamp power is increasing,but does not mean that the larger is the better.In recent years,fish lamp power is growing,and some relative companies think that the fish lamp power is better to be larger,which results in higher energy consumption cost,and not reaches expected effectiveness and efficiency as well.Aiming at the problem of pursuing continuous improvement about fishing lamp power,setting a metal halide lamp as the research object.For above-water fish lamp,this essay is going to find out the relationship between the volume of the fishing,the fishing radius and the total power,and the answer about how to choose the optimal power,through superposition model to calculate different types of above water fish lamp's fishing radius and volume of fishing,and the depth of the fishing(the position of the hook at the position of 5 m from the side of the ship as the hook position of the squid fishing vessel),using the new illuminance calculation model to calculate the fishing radius and volume of the fishing for the different power type underwater fish lamps.The result shows that:(1)For the 1k W type,2k W type,3k W type,or 4k W type of above water fish lamp,or the current commonly used 2-5k W type of underwater fish lamp.In underwater light field of fish lamp,the radius and volume of the fish area(0.1-10 lx in the good sensing zone plus 0.01-0.1lx in the weak zone)are increasing with the increase of fish lamp power,but the increase is becoming more and more slow.And according to its changing trend and the fitting formula,it will infinite an extreme value.In addition,four types of above water fish lamp,when the configuration is 1k W type,saturated underwater fishing volume is 4.25×10~5 m~3;when the configuration is 2k W type,the saturated underwater fishing volume is 5.26×10~5 m~3;when the configuration is 3k W type,the saturated underwater fishing volume is 4.48×10~5 m~3;when the configuration is 4k W type,the saturated underwater fishing volume is 4.46×10~5 m~3;Due to saturated underwater fishing volume is largest for 2k W type.So it is recommended to configure 2k W type fishing lamp for the 8154 type squid fishing boat.For the current commonly used 2-5k W type of underwater fish lamp,the radius and volume are increasing with the increase of fish lamp power,but the increase is becoming more and more slow.Also it will infinite an extreme value.In a certain range,the fishing lamp power is the bigger the better,while exceeding a certain range,the increase of fish lamp power will not bring the scope of changes in the range of fish as well as increase the energy consumption.So it should adapt suitable fishing lamp for different specifications of the fishing vessel,to ensure fishing efficiency while avoiding energy wasting.(2)For the 1-4k W type of fish lamp in small power range,the fishing depth increases with the power increases.With the power gradually increased,the increase scope of depth is gradually smaller,and ultimately will gradually stabilize in a value.For 1k W type lamp,the maximum depth of fishing will not exceed 41-72m;For 2k W type?3k W type?4kw type,both of the maximum depth of fishing will not exceed 48-80 m.For the 8154 type squid fishing boats,the current fishing boats commonly used fish lamp is power 120 k W,so when use 1k W-type fishing lamps,the proposed fishing depth is 39.3-70.4m;when use 2k W-type fishing lamps,the proposed fishing depth is 44-75m;when use 3k W-type fishing lamps,the proposed fishing depth is 40.2-70.9m;when use 4k W-type fishing lamps,the proposed fishing depth is 39.9-70.3m;Plus the distance of the ship's rail to the surface of water 2.5m,such as 2k W type lamp,then the proposed fishing depth should be 46.5-77.5m.While the illumination area of 0.01lx-0.1lx is still the light area squid can feel,so fishing depth can be bigger than 77.5m.