JP2006149275A - Shark-repulsing apparatus for fishery - Google Patents

Shark-repulsing apparatus for fishery Download PDF

Info

Publication number
JP2006149275A
JP2006149275A JP2004344255A JP2004344255A JP2006149275A JP 2006149275 A JP2006149275 A JP 2006149275A JP 2004344255 A JP2004344255 A JP 2004344255A JP 2004344255 A JP2004344255 A JP 2004344255A JP 2006149275 A JP2006149275 A JP 2006149275A
Authority
JP
Japan
Prior art keywords
electrode
fishing
fishery
power supply
repelling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2004344255A
Other languages
Japanese (ja)
Inventor
Atsushi Kumagai
敦史 熊谷
Hideki Nakano
秀樹 中野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SUZUSHI GYOGYO KYODO KUMIAI
TECHNO PULSE KK
Fisheries Research Agency
Original Assignee
SUZUSHI GYOGYO KYODO KUMIAI
TECHNO PULSE KK
Fisheries Research Agency
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SUZUSHI GYOGYO KYODO KUMIAI, TECHNO PULSE KK, Fisheries Research Agency filed Critical SUZUSHI GYOGYO KYODO KUMIAI
Priority to JP2004344255A priority Critical patent/JP2006149275A/en
Publication of JP2006149275A publication Critical patent/JP2006149275A/en
Pending legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shark-repulsing apparatus for fishery, capable of effectively repulsing sharks approaching to fishery boats. <P>SOLUTION: This shark-repulsing apparatus 1 for fishery for repulsing the sharks 8 gathering to captured fishes is equipped with an electrode group 3 arranged in sea water in the vicinity of a trawling boat 7, another electrode group 4 arranged in the sea water at a position detached by a prescribed distance from the electrode group 3 and an electric power source 2 impressing a pulse electric voltage of direct current so that the one of the group of the electrodes 3 and the group of the electrodes 4 becomes positive electrodes and other group becomes negative electrodes, and by impressing the pulse electric voltage to each of the electrode groups on landing the captured fishes, it is possible to give an electric shock to the sharks 8 wishing to snatch the captured fishes and repulse the sharks 8 without harming them. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、底曳き網漁船或いは延縄漁船等で、捕獲した魚を水揚げする際に、付近を遊泳する鮫に魚を食いちぎられる被害を防止する漁業用鮫撃退装置に関する。   The present invention relates to a fishing repelling apparatus for preventing damage caused by catching a fish swimming around when a captured fish is landed on a bottom net fishing boat or a longline fishing boat.

例えば、底曳き網漁船は、漁船より海底に網を仕掛け、しばらく時間をおいた後に網を引き上げることにより魚類を捕獲する。また、捕獲した魚類を漁船に引き揚げる際には、巻き取り装置を駆動させることにより、網に連結したワイヤを巻き取る操作が行われる。
この際、漁船の付近を遊泳する鮫に捕獲した魚を狙われることがあり、網で捕獲した魚を海水中から引き上げる前に、網ごと噛み付かれることが多々発生する。このような場合には、漁獲量に大量の損失を与えるばかりでなく、底曳き網漁用の網が喰いちぎられてしまうので、その後の底曳き網漁ができなくなってしまい、漁業関係者に甚大な被害を与えてしまう。 For example, a bottom net fishing boat sets a net on the sea bottom from a fishing boat and catches fish by lifting the net after a while. Further, when the captured fish is withdrawn to the fishing boat, an operation of winding the wire connected to the net is performed by driving the winding device.
At this time, the fish caught by the fishing rod swimming near the fishing boat may be targeted, and the fish caught by the net is often bitten by the net before being lifted from the seawater. In such a case, not only will there be a large loss in the catch, but the nets for bottom net fishing will be devoured, making it impossible for subsequent bottom net fishing to fishers. It will cause tremendous damage.

上述したように、従来における底曳き網漁、延縄漁等の漁網或いは釣り針を用いて魚を捕獲する場合には、捕獲した魚を漁船に引き上げる際に、鮫に噛み付かれることがあり、漁業関係者に甚大な被害を与えてしまい、鮫を撃退する装置の開発が望まれていた。
この発明は、このような従来の課題を解決するためになされたものであり、その目的とするところは、漁船に近づく鮫を効果的に撃退することのできる漁業用鮫撃退装置を提供することにある。 As mentioned above, when catching fish using fishing nets or fishing hooks, such as conventional bottom purse seine fishing, longline fishing, etc., when the captured fish is pulled up to a fishing boat, it may be bitten by the carp, The development of a device that would cause a great deal of damage to a person and repel it was desired.
This invention is made in order to solve such a conventional subject, The place made into the objective is providing the repelling device for fisheries which can repel the reed approaching a fishing boat effectively. It is in.

上記目的を達成するため、本願請求項１に記載の発明は、捕獲した魚に群がる鮫を撃退する漁業用鮫撃退装置であって、前記漁船近傍の海水中に配置される第１の電極、及び該第１の電極から所定距離離れた位置となる海水中に配置される第２の電極と、前記第１の電極、及び前記第２の電極の一方がプラス極、他方がマイナス電極となるように直流電圧を印加する電源手段とを備えたことを特徴とする。請求項２に記載の発明は、前記第１の電極または前記第２の電極のうちの少なくとも一方は、複数個備えられ、前記第１の電極、前記第２の電極が交互に並ぶように海水中に配置されることを特徴とする。請求項３に記載の発明は、前記第１の電極及び第２の電極は、複数の電極棒からなることを特徴とする。請求項４に記載の発明は、前記電源手段は、前記第１の電極及び前記第２の電極に、直流パルス電圧を印加することを特徴とする。請求項５に記載の発明は、前記電源手段は、前記直流パルス電圧を所定回数出力する毎に、前記第１の電極及び第２の電極の極性を切り換えることを特徴とする。請求項６に記載の発明は、前記第１の電極、第２の電極、及び電源手段は、前記漁船に対して取り外しが可能であることを特徴とする。   In order to achieve the above-mentioned object, the invention described in claim 1 of the present application is a fishing repelling device for repelling traps gathered in captured fish, wherein the first electrode is disposed in seawater in the vicinity of the fishing boat, And one of the first electrode and the second electrode is a positive electrode and the other is a negative electrode. The second electrode is disposed in seawater at a predetermined distance from the first electrode. And a power supply means for applying a DC voltage. According to a second aspect of the present invention, at least one of the first electrode and the second electrode is provided in plural, and seawater is provided so that the first electrode and the second electrode are alternately arranged. It is arranged inside. The invention described in claim 3 is characterized in that the first electrode and the second electrode are composed of a plurality of electrode rods. According to a fourth aspect of the present invention, the power supply means applies a DC pulse voltage to the first electrode and the second electrode. According to a fifth aspect of the present invention, the power supply means switches the polarities of the first electrode and the second electrode every time the DC pulse voltage is output a predetermined number of times. The invention described in claim 6 is characterized in that the first electrode, the second electrode, and the power supply means can be detached from the fishing boat.

本願請求項１の発明では、海水中に配置される第１の電極、第２の電極間に直流電圧が印加されるので、漁船近傍の海水中を遊泳する鮫に電気的な衝撃を与えることができ、鮫に傷をつけることなく撃退することができる。これにより、捕獲した魚を鮫に横取りされるというトラブルの発生を回避することができる。請求項２の発明では、合計３個以上となる第１の電極、第２の電極が交互に配置され、各電極間に直流電圧が印加されるので、より広範囲に亘る海水中に電気的な衝撃を与えることができる。請求項３の発明では、第１の電極、第２の電極が複数本の電極棒から構成されるので、同一の電圧を印加した場合には、１本の電極棒の場合よりも、海水中のより深い場所、広い場所まで電気的な衝撃を与えることができる。また、請求項４の発明では、各電極間に直流パルス電圧を印加するので、鮫に対してより効果的に電気的な衝撃を与えることができ、少ない消費電力でより効果的に鮫を撃退することができる。請求項５の発明では、各電極の極性を所定回数のパルス電圧を出力する毎に変化させるので、電流の流れる方向を変化させることができ、あらゆる方向から近づく鮫に対して極めて有効に電気的な衝撃を与えることができる。請求項６の発明では、第１の電極、第２の電極、及び電源手段を、取り外すことができるので、必要に応じて漁船に取り付けて使用することができ、コスト的に極めて有利である。   In the invention of claim 1 of the present application, since a DC voltage is applied between the first electrode and the second electrode arranged in the seawater, an electric shock is given to the rod swimming in the seawater near the fishing boat. Can be repelled without damaging the spear. As a result, it is possible to avoid the occurrence of trouble that the captured fish is intercepted by the cage. In the invention of claim 2, since the first electrode and the second electrode, which are three or more in total, are alternately arranged, and a DC voltage is applied between the electrodes, the electric wave is more widely used in seawater. Can give an impact. In invention of Claim 3, since the 1st electrode and the 2nd electrode are comprised from a plurality of electrode rods, when the same voltage is applied, in the seawater rather than the case of one electrode rod Electric shock can be applied to deeper and wider areas. In the invention of claim 4, since a DC pulse voltage is applied between the electrodes, an electric shock can be more effectively applied to the bag, and the bag can be repelled more effectively with less power consumption. can do. In the invention of claim 5, since the polarity of each electrode is changed every time a predetermined number of pulse voltages are output, the direction in which the current flows can be changed, and it is very effective for the saddle approaching from all directions. Can give a strong impact. In the invention of claim 6, since the first electrode, the second electrode, and the power supply means can be removed, they can be used by being attached to a fishing boat as necessary, which is extremely advantageous in terms of cost.

以下、本発明の実施形態を図面に基づいて説明する。図１は、本発明の第１の実施形態に係る漁業用鮫撃退装置の構成を示す回路図である。この漁業用鮫撃退装置１は、漁船に搭載されるものであり、図１に示すように、電源装置（電源手段）２と、該電源装置２と連結された２つの電極群、即ち電極群（第１の電極）３と、電極群（第２の電極）４とを備えている。電源装置２は、自動安定器５を介して交流１００ボルト電源と連結されており、交流電圧を直流電圧に変換し、更に、該直流電圧を所定の周波数のパルス電圧に変換して、２つの出力端子間から直流のパルス電圧を出力する。例えば、交流１００ボルトの電圧から、パルス電圧６００ボルト、パルス幅０．５ｍsec、パルス数２回／secとなるパルス電圧を生成して出力する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a circuit diagram showing a configuration of a fishing repelling apparatus according to a first embodiment of the present invention. This fishing repelling device 1 is mounted on a fishing boat. As shown in FIG. 1, a power supply device (power supply means) 2 and two electrode groups connected to the power supply device 2, that is, an electrode group. (First electrode) 3 and electrode group (second electrode) 4 are provided. The power supply device 2 is connected to an AC 100 volt power supply via an automatic ballast 5, converts an AC voltage into a DC voltage, and further converts the DC voltage into a pulse voltage having a predetermined frequency. A DC pulse voltage is output between the output terminals. For example, a pulse voltage having a pulse voltage of 600 volts, a pulse width of 0.5 msec, and a pulse number of 2 times / sec is generated from an AC voltage of 100 volts and output.

更に、２つの出力端子の極性を、交互にプラス極、マイナス極で変更する。即ち、１回目のパルス電圧が、電極群３がプラス極、電極群４がマイナス極となる極性であったなら、２回目のパルス電圧は電極群３がマイナス極、電極群４がプラス極となるように、交互に極性を切り換える。電極群３は、複数個（ここでは７個）の電極棒３ａを備えており、各電極棒３ａは、漁船近傍の海水中に配置される。同様に、電極群４は、複数個（ここでは７個）の電極棒４ａを備えており、各電極棒４ａは、漁船近傍の海水中で、前述の電極群３と所定距離離れた位置に設けられる。   Further, the polarities of the two output terminals are alternately changed between a positive pole and a negative pole. That is, if the first pulse voltage has a polarity in which the electrode group 3 has a positive polarity and the electrode group 4 has a negative polarity, the second pulse voltage has a negative polarity in the electrode group 3 and a positive polarity in the electrode group 4. The polarity is switched alternately so that The electrode group 3 includes a plurality (here, seven) of electrode rods 3a, and each electrode rod 3a is disposed in seawater in the vicinity of a fishing boat. Similarly, the electrode group 4 includes a plurality (seven in this case) of electrode rods 4a, and each electrode rod 4a is located at a predetermined distance from the electrode group 3 in the seawater near the fishing boat. Provided.

図２は、本実施形態の漁業用鮫撃退装置１を搭載した底曳き網漁船７の側面図、図３は同平面図を示している。各図に示すように、電極群３は、漁船側面の船首側に設けられ、電極群４は、漁船側面の船尾側に設けられ、各電極群３，４はその少なくとも一部が海水中に挿入されている。そして、これらの各電極群３，４の間にて、網６で捕獲した魚類の水揚げが行われる。ここで、各電極群３，４間の距離は、例えば、４１５０ｍｍとされ、各電極群３を構成する電極棒３ａどうしの間隔、及び電極群４を構成する電極棒４ａどうしの間隔は１４０ｍｍとされている。   FIG. 2 is a side view of a bottom purse seine fishing boat 7 equipped with the fishing repelling device 1 of the present embodiment, and FIG. 3 is a plan view thereof. As shown in each figure, the electrode group 3 is provided on the bow side of the fishing boat side surface, the electrode group 4 is provided on the stern side of the fishing boat side surface, and each of the electrode groups 3 and 4 is at least partially in seawater. Has been inserted. Then, the fish captured by the net 6 is landed between these electrode groups 3 and 4. Here, the distance between the electrode groups 3 and 4 is, for example, 4150 mm, and the distance between the electrode bars 3a constituting each electrode group 3 and the distance between the electrode bars 4a constituting the electrode group 4 are 140 mm. Has been.

次に、上記のように構成された本実施形態に係る漁業用鮫撃退装置１の動作について説明する。網６により魚類を捕獲し、これを底曳き網漁船７に水揚げする際には、網６に連結されたワイヤーを巻き取り装置により巻き取ることにより網６を引き上げる。この際、図１に示した電源装置２を駆動させて、各電極群３，４間にパルス電圧を印加する。これにより、上記したように、電圧６００ボルト、パルス幅０．５ｍsecとなる直流パルスが、毎秒２回ずつ極性が交互に切り替わりながら、各電極群３，４に印加される。
その結果、漁船７近傍の海水中に電気パルスが発生するので、網６にて捕獲した魚に鮫８が接近しようとした場合に、鮫８はこの電気パルスにより衝撃を受けることになり、漁船７から遠ざかるように退散する。即ち、鮫８は顔の部分にロレンチニ瓶と称する微弱電流を検知する器官を持っており、通常時はこの機能を用いて、砂に隠れている魚や、遠くにいる魚を探し出すことができる。その反面、海水中にパルス電圧を発生させるとこれに敏感に反応してしまい、衝撃を受けて退散してしまう。つまり、本実施形態では、各電極群３，４にパルス電圧を印加することにより、漁船に近づこうとする鮫８に電気的な衝撃を与え、この衝撃により鮫８を追い払うことができる。 Next, the operation of the fishing repelling apparatus 1 according to the present embodiment configured as described above will be described. When catching fish by the net 6 and landing it on the bottom net fishing boat 7, the net 6 is pulled up by winding the wire connected to the net 6 with a winding device. At this time, the power supply device 2 shown in FIG. 1 is driven to apply a pulse voltage between the electrode groups 3 and 4. As a result, as described above, a DC pulse having a voltage of 600 volts and a pulse width of 0.5 msec is applied to the electrode groups 3 and 4 while the polarity is alternately switched twice every second.
As a result, an electric pulse is generated in the seawater in the vicinity of the fishing boat 7, so that when the shark 8 tries to approach the fish captured by the net 6, the shark 8 is impacted by this electric pulse, and the fishing boat Dissipate away from 7. That is, the shark 8 has an organ that detects a weak current called a Lorentini bottle in the face portion, and normally, this function can be used to search for fish hidden in the sand or fish far away. On the other hand, when a pulse voltage is generated in seawater, it reacts sensitively and dissipates under impact. That is, in this embodiment, by applying a pulse voltage to each of the electrode groups 3 and 4, an electric shock is given to the rod 8 trying to approach the fishing boat, and the rod 8 can be driven away by this shock.

本発明者らが、実際に上記の条件で直流パルスを出力した際に、海水中において発生する電圧を測定したところ、図２に示すように、水深５ｍで１７４ボルト、水深１０ｍで１６７ボルト、水深１５ｍで１５７ボルト、水深２０ｍで１５５ボルト、水深２５ｍで１５４ボルトとなり、海面から深い位置まで電気的な衝撃が与えられることが確認できた。
このようにして、本実施形態に係る漁業用鮫撃退装置１では、漁船７の近傍の海水中に２つの電極群３，４を配置し、これらの電極群３，４間にパルス電圧を印加するので、捕獲した魚を水揚げする際に、この魚を横取りしようとして近づく鮫８を撃退することができる。これにより、底曳き網漁で捕獲した魚を網６で水揚げする際に、この魚を鮫８に横取りされることを防止することができる。また、電気ショックにより鮫８を撃退する方式を採用するので、鮫８に傷を付けることがなく、動物保護の観点から見て極めて効果的である。 When the present inventors actually measured the voltage generated in the seawater when a DC pulse was output under the above conditions, as shown in FIG. 2, the water depth was 174 volts, the water depth 10 m was 167 volts, It was 157 volts at a water depth of 15 m, 155 volts at a water depth of 20 m, and 154 volts at a water depth of 25 m, confirming that an electrical shock was applied from the sea level to a deep position.
Thus, in the fishing repelling apparatus 1 according to the present embodiment, the two electrode groups 3 and 4 are arranged in the seawater in the vicinity of the fishing boat 7, and a pulse voltage is applied between these electrode groups 3 and 4. Therefore, when the captured fish is landed, it is possible to repel the shark 8 approaching to steal the fish. Thereby, when the fish captured by the bottom net fishing is landed by the net 6, it is possible to prevent the fish from being intercepted by the carp 8. In addition, since a method of repelling the heel 8 by electric shock is adopted, the heel 8 is not damaged and is extremely effective from the viewpoint of animal protection.

なお、上記した実施形態では、各電極群３，４が有する電極棒３ａ，４ａの数がそれぞれ７個である場合を例に挙げて説明したが、本発明はこれに限定されるものではなく、１または複数個とすることができる。また、２つの電極群３，４を備える場合を例に挙げたが、本発明はこれに限定されるものではなく、３以上の電極群を備える構成とすることも可能である。この場合には、３以上設けられた電極群が交互にプラス極、マイナス極となるように極性を設定することにより、より効果的に海水中に電気パルスを発生させることができる。
また、上記した漁業用鮫撃退装置１は、底曳き網漁船７に固定して使用する場合を例に挙げて説明したが、電源装置２、及び各電極群３，４を底曳き網漁船７に対して取り外しができるように構成し、使用目的に応じて適宜取り付け、取り外しを行うようにすることも可能である。このような構成とすれば、各漁船毎にそれぞれ漁業用鮫撃退装置１を備える必要がなく、必要に応じて取り付けることができるので、使用目的に応じた柔軟な対応を採ることが可能である。 In the above-described embodiment, the case where the number of electrode rods 3a and 4a included in each electrode group 3 and 4 is 7 has been described as an example, but the present invention is not limited to this. One or more. Moreover, although the case where the two electrode groups 3 and 4 were provided was mentioned as an example, this invention is not limited to this, It can also be set as the structure provided with three or more electrode groups. In this case, it is possible to generate electric pulses in seawater more effectively by setting the polarity so that three or more electrode groups are alternately positive and negative.
Moreover, although the above-mentioned fishing repelling device 1 for fishery has been described by taking as an example a case where it is used by being fixed to the bottom net fishing boat 7, the power source device 2 and each electrode group 3, 4 are connected to the bottom net fishing boat 7. It is also possible to make it removable so that it can be appropriately attached and removed according to the purpose of use. If it is set as such a structure, it is not necessary to equip each fishing boat with the repelling device 1 for fisheries, respectively, Since it can attach as needed, it is possible to take a flexible response | compatibility according to the intended purpose. .

次に、本発明の第２の実施形態について説明する。図４は、第２の実施形態に係る漁業用鮫撃退装置１１の構成を示すブロック図である。同図に示す漁業用鮫撃退装置１１は、前述の図１に示したものと略同一であり、電極数が３個となっている点が相違する。即ち、自動安定器１６を介して与えられる交流１００ボルトの電源電圧から直流のパルス信号を生成する電源装置（電源手段）１２と、該電源装置１２の出力端子と連結された３つの電極１３〜１５を備えている。各電極１３〜１５は、図８に示すように、上下部分が電極とされた構成を有しており、電線を介して電源装置１２の出力端子と連結されている。
図５は、上記の漁業用鮫撃退装置１１を搭載した延縄漁船１７の構成を示す側面図、図５は同平面図である。各図に示すように、延縄漁船１７の側面には、略等間隔となるように３つの電極１３〜１５が設けられており、各電極１３〜１５は、海水中に挿入されている。 Next, a second embodiment of the present invention will be described. FIG. 4 is a block diagram showing a configuration of the fishing retreat apparatus 11 according to the second embodiment. The fishery repelling device 11 shown in the figure is substantially the same as that shown in FIG. 1 described above, except that the number of electrodes is three. That is, a power supply device (power supply means) 12 that generates a DC pulse signal from a power supply voltage of 100 VAC supplied through the automatic ballast 16, and three electrodes 13 to 13 connected to the output terminal of the power supply device 12. 15 is provided. As shown in FIG. 8, each of the electrodes 13 to 15 has a configuration in which upper and lower portions are electrodes, and is connected to an output terminal of the power supply device 12 through an electric wire.
FIG. 5 is a side view showing the configuration of the longline fishing boat 17 equipped with the fishing repelling device 11 described above, and FIG. 5 is a plan view thereof. As shown in each figure, three electrodes 13 to 15 are provided on the side surface of the longline fishing boat 17 so as to be substantially equidistant, and each electrode 13 to 15 is inserted in seawater.

次に、第２の実施形態に係る漁業用鮫撃退装置１１の動作について説明する。延縄漁船１７では、延縄１８により捕獲した魚を引き揚げる際に、電源装置１２を起動させて、各電極１３〜１５にパルス電圧を印加する。
電源装置１２は、３つの電極１３〜１５に対して、直流４００ボルト、パルス幅１ｍsec、パルス数毎秒１回、という条件で、図７のａ１、ａ２、ａ３に示すように交互に極性を変化させながらパルス電圧を印加する。即ち、１回目のパルス電圧を、電極１３をプラス極、電極１４をマイナス極として印加し、２回目のパルス電圧を、電極１４をプラス極、電極１５をマイナス極として印加し、３回目のパルス電圧を、電極１５をプラス極、電極１３をマイナス極として印加する、といったように、３つの電極１３〜１５に対して極性を順繰りに変化させながら、パルス電圧を印加する。 Next, the operation of the fishing retreat apparatus 11 according to the second embodiment will be described. In the longline fishing boat 17, when the fish captured by the longline 18 is pulled up, the power supply device 12 is started and a pulse voltage is applied to each electrode 13-15.
The power supply device 12 changes its polarity alternately as shown by a1, a2, and a3 in FIG. 7 under the conditions of DC 400 volts, pulse width 1 msec, and number of pulses once per second for the three electrodes 13 to 15. Apply a pulse voltage. That is, the first pulse voltage is applied with the electrode 13 as the positive electrode and the electrode 14 as the negative electrode, the second pulse voltage is applied with the electrode 14 as the positive electrode and the electrode 15 as the negative electrode, and the third pulse. A pulse voltage is applied while sequentially changing the polarity of the three electrodes 13 to 15 such that the voltage is applied with the electrode 15 as a positive electrode and the electrode 13 as a negative electrode.

これにより、延縄漁船１７の近傍の海水中にパルス電圧が出力され、該延縄漁船１７に近づこうとする鮫８を効果的に撃退することができ、延縄１８を用いて引き上げられる魚が鮫８に横取りされるというトラブルの発生を回避することができる。
本発明者らが、実際に上記の条件で直流パルスを出力した際に、海水中において発生する電圧を測定したところ、図５に示すように、延縄漁船１７の前後１２ｍの地点で９５ボルト、水深１６ｍの地点で９５ボルトとなり、漁船１７から遠い位置及び海面から深い位置まで電気的な衝撃が与えられることが確認できた。このようにして、第２の実施形態に係る漁業用鮫撃退装置１１についても、前述した第１の実施形態と同様に、延縄漁船１７の近くを遊泳する魚８が、捕獲した魚に食いつくことを防止することができ、漁獲量に多大な損失を与えるという従来の問題点を解決することができる。 As a result, a pulse voltage is output in the seawater in the vicinity of the longline fishing boat 17, and the reed 8 that attempts to approach the longline fishing boat 17 can be effectively repelled, and the fish pulled up using the longline 18 becomes reed 8. It is possible to avoid the occurrence of trouble of being intercepted.
When the inventors actually measured the voltage generated in the seawater when a DC pulse was output under the above conditions, as shown in FIG. 5, 95 volts at a point 12 m before and after the longline fishing boat 17, It was 95 volts at a depth of 16 m, and it was confirmed that an electrical shock was applied to a position far from the fishing boat 17 and a deep position from the sea surface. In this way, also in the fishing repelling device 11 according to the second embodiment, the fish 8 swimming near the longline fishing boat 17 eats the captured fish as in the first embodiment described above. Can be prevented, and the conventional problem of causing a great loss in catch can be solved.

以上、本発明の漁業用鮫撃退装置を図示の実施形態に基づいて説明したが、本発明はこれに限定されるものではなく、各部の構成は、同様の機能を有する任意の構成のものに置き換えることができる。例えば、電極間に印加する電圧は、上記したパルス電圧に限定されるものではなく、略一定となる直流電圧を電極間に印加し続けるようにしても、鮫８に電気的な衝撃を与えることができ、鮫８を撃退することができる。
また、上記した各実施形態では、パルス電圧を１回出力する毎に電極の極性を変化させる場合を例に挙げて説明したが、本発明はこれに限定されるものではなく、２回以上の所定回数毎に電極の極性を変化させるようにしても良い。また、極性を変化させず、各電極を常に同一の極性としてパルス電圧を印加するようにしても良い。 As mentioned above, although the fishing repelling device for fishery of the present invention has been described based on the illustrated embodiment, the present invention is not limited to this, and the configuration of each part is of an arbitrary configuration having the same function. Can be replaced. For example, the voltage applied between the electrodes is not limited to the pulse voltage described above, and an electric shock is applied to the rod 8 even if a substantially constant DC voltage is continuously applied between the electrodes. You can repel the spear 8.
Further, in each of the above-described embodiments, the case where the polarity of the electrode is changed every time the pulse voltage is output has been described as an example. However, the present invention is not limited to this, and is performed two or more times. The polarity of the electrode may be changed every predetermined number of times. Alternatively, the pulse voltage may be applied with the electrodes always having the same polarity without changing the polarity.

捕獲した魚を漁船に水揚げする際に、鮫による魚の横取りを防止する上で極めて有用である。   This is extremely useful in preventing the catching of the fish by the sea bream when landing the captured fish on a fishing boat.

本発明の第１の実施形態に係る漁業用鮫撃退装置の構成を示すブロック図である。It is a block diagram which shows the structure of the fishing repelling apparatus for fisheries which concerns on the 1st Embodiment of this invention. 本発明の第１の実施形態に係り、漁業用鮫撃退装置を底曳き網漁船に搭載したときの構成を示す側面図である。It is a side view which shows a structure when it concerns on the 1st Embodiment of this invention and mounts the fishing repelling device for fishing on a bottom purse seine fishing boat. 図２の、漁業用鮫撃退装置を底曳き網漁船に搭載したときの構成を示す平面図である。It is a top view which shows a structure when the fishing repelling device for fisheries of FIG. 2 is mounted in a bottom net fishing boat. 本発明の第２の実施形態に係る漁業用鮫撃退装置の構成を示すブロック図である。It is a block diagram which shows the structure of the fishing repelling apparatus for fisheries which concerns on the 2nd Embodiment of this invention. 図４の、漁業用鮫撃退装置を延縄漁船に搭載したときの構成を示す側面図である。It is a side view which shows a structure when the fishing repelling apparatus of FIG. 4 is mounted in a longline fishing boat. 図５の平面図である。FIG. 6 is a plan view of FIG. 5. 第２の実施形態に係る漁業用鮫撃退装置の、各電極に印加するパルス電圧を示す説明図である。It is explanatory drawing which shows the pulse voltage applied to each electrode of the repelling apparatus for fisheries which concerns on 2nd Embodiment. 図７に示す各電極の詳細な構成を示す側面図である。It is a side view which shows the detailed structure of each electrode shown in FIG.

符号の説明Explanation of symbols

１，１１ 漁業用鮫撃退装置
２，１２ 電源装置（電源手段）
３ 電極群（第１の電極）
４ 電極群（第２の電極）
３ａ，４ａ 電極棒
５，１６ 自動安定器
６ 網
７ 底曳き網漁船
８ 鮫
１３，１４，１５ 電極
１７ 延縄漁船
１８ 延縄 1,11 Fishery repel device 2,12 Power supply (power supply means)
3 electrode group (first electrode)
4 electrode group (second electrode)
3a, 4a Electrode rod 5,16 Automatic ballast 6 Net 7 Bottom purse seine fishing boat 8 鮫 13, 14, 15 Electrode 17 Long line fishing boat 18 Long line

Claims (6)

捕獲した魚に群がる鮫を撃退する漁業用鮫撃退装置であって、
前記漁船近傍の海水中に配置される第１の電極、及び該第１の電極から所定距離離れた位置となる海水中に配置される第２の電極と、前記第１の電極、及び前記第２の電極の一方がプラス極、他方がマイナス電極となるように直流電圧を印加する電源手段と、を備えたことを特徴とする漁業用鮫撃退装置。 A fishing repelling device for repelling traps gathered in captured fish,
A first electrode disposed in seawater in the vicinity of the fishing boat; a second electrode disposed in seawater at a predetermined distance from the first electrode; the first electrode; A fishery repelling apparatus, comprising: a power supply means for applying a DC voltage so that one of the two electrodes is a positive electrode and the other is a negative electrode. 前記第１の電極または前記第２の電極のうちの少なくとも一方は、複数個備えられ、前記第１の電極、前記第２の電極が交互に並ぶように海水中に配置されることを特徴とする請求項１に記載の漁業用鮫撃退装置。   A plurality of at least one of the first electrode or the second electrode is provided, and the first electrode and the second electrode are arranged in seawater so that the first electrode and the second electrode are alternately arranged. The fishing repelling device for fishery according to claim 1. 前記第１の電極及び第２の電極は、複数の電極棒からなることを特徴とする請求項１または２に記載の漁業用鮫撃退装置。   The said 1st electrode and 2nd electrode consist of several electrode rods, The repelling apparatus for fisheries of Claim 1 or 2 characterized by the above-mentioned. 前記電源手段は、前記第１の電極及び前記第２の電極に、直流パルス電圧を印加することを特徴とする請求項１〜３のいずれか１項に記載の漁業用鮫撃退装置。   The fishing power retreat apparatus according to any one of claims 1 to 3, wherein the power supply means applies a DC pulse voltage to the first electrode and the second electrode. 前記電源手段は、前記直流パルス電圧を所定回数出力する毎に、前記第１の電極及び第２の電極の極性を切り換えることを特徴とする請求項４に記載の漁業用鮫撃退装置。   The fishery repelling device according to claim 4, wherein the power supply means switches the polarity of the first electrode and the second electrode every time the DC pulse voltage is output a predetermined number of times. 前記第１の電極、第２の電極、及び電源手段は、前記漁船に対して取り外しが可能であることを特徴とする請求項１〜５のいずれか１項に記載の漁業用鮫撃退装置。   6. The fishing retreat apparatus according to claim 1, wherein the first electrode, the second electrode, and the power supply means are detachable from the fishing boat.
JP2004344255A 2004-11-29 2004-11-29 Shark-repulsing apparatus for fishery Pending JP2006149275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004344255A JP2006149275A (en) 2004-11-29 2004-11-29 Shark-repulsing apparatus for fishery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004344255A JP2006149275A (en) 2004-11-29 2004-11-29 Shark-repulsing apparatus for fishery

Publications (1)

Publication Number Publication Date
JP2006149275A true JP2006149275A (en) 2006-06-15

Family

ID=36628280

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004344255A Pending JP2006149275A (en) 2004-11-29 2004-11-29 Shark-repulsing apparatus for fishery

Country Status (1)

Country Link
JP (1) JP2006149275A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008206403A (en) * 2007-02-23 2008-09-11 Techno Pulse:Kk Apparatus for repelling ray
JP4965749B1 (en) * 2012-02-20 2012-07-04 株式会社テクノパルス Fishery repel device
KR20160032407A (en) * 2014-09-16 2016-03-24 조국형 A shark repellent
KR20180005077A (en) * 2016-07-05 2018-01-15 주식회사 아이언에스 Shark repelling device
CN108341029A (en) * 2018-02-06 2018-07-31 晶日金刚石工业有限公司 Underwater frogman drives system and its application method
EP3310160A4 (en) * 2015-06-18 2019-03-06 Shark and Seal Holdings Pty Ltd Marine predator repellent apparatus and system
JP7356768B1 (en) 2023-04-12 2023-10-05 一般社団法人Nagoya Electronic equipment and magnetic field barrier forming equipment

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50157189A (en) * 1974-06-04 1975-12-18
JPS511291A (en) * 1974-06-20 1976-01-07 Matsushita Electric Ind Co Ltd KYOAKUGYOGE KITAISOCHI
US4211980A (en) * 1977-06-27 1980-07-08 Stowell William R Method of creating an electric field for shark repellent
JPH01274395A (en) * 1988-04-25 1989-11-02 Mitsubishi Heavy Ind Ltd Preventing method for adhesion of sea-organism
EP0631721A1 (en) * 1993-06-24 1995-01-04 Natal Sharks Board Control of sharks
JPH09140293A (en) * 1995-05-22 1997-06-03 Natal Sharks Board Shark repulsing device
JPH09279553A (en) * 1996-04-15 1997-10-28 Dam Suigenchi Kankyo Seibi Center Electric screen
WO2003094370A1 (en) * 2002-05-06 2003-11-13 Seachange Technology Holdings Pty Ltd Improved aquatic vessel hull

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50157189A (en) * 1974-06-04 1975-12-18
JPS511291A (en) * 1974-06-20 1976-01-07 Matsushita Electric Ind Co Ltd KYOAKUGYOGE KITAISOCHI
US4211980A (en) * 1977-06-27 1980-07-08 Stowell William R Method of creating an electric field for shark repellent
JPH01274395A (en) * 1988-04-25 1989-11-02 Mitsubishi Heavy Ind Ltd Preventing method for adhesion of sea-organism
EP0631721A1 (en) * 1993-06-24 1995-01-04 Natal Sharks Board Control of sharks
JPH09140293A (en) * 1995-05-22 1997-06-03 Natal Sharks Board Shark repulsing device
JPH09279553A (en) * 1996-04-15 1997-10-28 Dam Suigenchi Kankyo Seibi Center Electric screen
WO2003094370A1 (en) * 2002-05-06 2003-11-13 Seachange Technology Holdings Pty Ltd Improved aquatic vessel hull

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008206403A (en) * 2007-02-23 2008-09-11 Techno Pulse:Kk Apparatus for repelling ray
JP4965749B1 (en) * 2012-02-20 2012-07-04 株式会社テクノパルス Fishery repel device
KR20160032407A (en) * 2014-09-16 2016-03-24 조국형 A shark repellent
KR101616741B1 (en) 2014-09-16 2016-04-29 주식회사 대양전자 A shark repellent
EP3310160A4 (en) * 2015-06-18 2019-03-06 Shark and Seal Holdings Pty Ltd Marine predator repellent apparatus and system
KR20180005077A (en) * 2016-07-05 2018-01-15 주식회사 아이언에스 Shark repelling device
KR102117839B1 (en) * 2016-07-05 2020-06-02 주식회사 아이언에스 Shark repelling device
CN108341029A (en) * 2018-02-06 2018-07-31 晶日金刚石工业有限公司 Underwater frogman drives system and its application method
JP7356768B1 (en) 2023-04-12 2023-10-05 一般社団法人Nagoya Electronic equipment and magnetic field barrier forming equipment
JP7388672B1 (en) 2023-04-12 2023-11-29 一般社団法人Nagoya Electronics

Similar Documents

Publication Publication Date Title
Thomsen et al. Fish pots: fish behavior, capture processes, and conservation issues
Werner et al. Fishing techniques to reduce the bycatch of threatened marine animals
US20100242851A1 (en) Systems and Methods for Aquatic Electrified Barriers
JPWO2013051725A1 (en) Hygiene management method and apparatus for cultured fish
JP2006149275A (en) Shark-repulsing apparatus for fishery
JP2017018028A (en) Calming landing method
US20080202014A1 (en) Kite fishing lure that generates a splashing effect on a body of water
US5417006A (en) Magnetic influence and control of living organisms
KR20040073112A (en) Anti-fouling and eliminating system for aquatic organisms
US11452282B2 (en) Crawfish trap bait guard system and method
KR101616741B1 (en) A shark repellent
JP3882061B2 (en) Sewing net fishing method and fishing gear used in the method
Bull A review of methodologies for mitigating incidental catch of seabirds in New Zealand fisheries
JP4965749B1 (en) Fishery repel device
KR20040107380A (en) Fishing method
JP5007578B2 (en) Ray repelling device
JP2006081452A (en) Trawl fishing net
JPH04228018A (en) Boat-pulled fishing device
CN210168810U (en) Novel anti-hanging artificial bait
US3061966A (en) Method of removing fish trapped in pocket
Sumpton et al. Gear modifications and alternative baits that reduce bait scavenging and minimize by-catch on baited drum-lines used in the Queensland Shark Control Program
Edwin Surrounding nets and seines: structure, operation and conservation aspects
KR102590468B1 (en) Lure for fishing
GB2161051A (en) Fishing tackle
SU1337019A1 (en) Trawl for electric fishing

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20071018

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090701

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20101208

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110119

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20110119

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20110119

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20110712