Electronic device
The electronic device addresses the high cost and power consumption issues of existing shark repellents by using a low-cost, tension-activated AC voltage system with visible cues to electrocutely repel specific fish, enhancing safety in aquatic settings.
Patent Information
- Application Number
- JP2024135815
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2044-08-15
AI Technical Summary
Existing shark repellent devices, such as the Shark Shocker, are costly and require constant power consumption to effectively repel specific fish with electroreceptors like sharks and rays.
An electronic device with a generator, conducting wires, and a flexible wire that activates a power supply when tension is applied, producing an AC voltage to repel fish by electrocution, using a low-cost configuration and visible cylindrical and rod bodies to expand the repelling area.
Repels specific fish with electroreceptors effectively and efficiently, without constant power consumption, by electrocuting them upon contact and using visual cues to expand the repelling area, thus ensuring safety in aquatic environments.
Smart Images
Figure 2026032822000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to an electronic device. [Background technology]
[0002] Non-Patent Document 1 describes in detail a device (high voltage pulse shark repellent (Shark Shocker)) that repels sharks by emitting pulses into the ocean that sharks dislike. In addition, the conceptual diagram in the characteristics column shows (1) a ship floating in the sea, (2A) a large Shark Shocker main body installed on the ship, and (2B) a Shark Shocker equipped with a single rope with an integrated electrode that is connected to the Shark Shocker main body and hung down into the sea, and (3) a shark that cannot enter within a radius of 50 to 60 meters from the single rope. According to Non-Patent Document 1, the use of Shark Shocker ensures the safety of divers working underwater and safe fishing operations. [Prior art documents] [Patent documents]
[0003] [Non-Patent Document 1] Ugajin Electric Co., Ltd., Product Guide, Shark Shocker, a high-voltage pulse shark repellent that emits pulses that sharks are scared of. Ensure the safety of marine work! [online], October 23, 2019, [Retrieved July 25, 2024], Internet<URL:http: / / www.ugajin.co.jp / products / shark-shocker / > Summary of the Invention [Problem to be solved by the invention]
[0004] As mentioned above, the Shark Shocker of Patent Document 1 consists of (2A) a large Shark Shocker main body installed on a ship and (2B) a Shark Shocker equipped with a single rope with an integrated electrode that is connected to the Shark Shocker main body and hung down into the sea.
[0005] An object of the present invention is to provide an electronic device that can repel specific fish having electroreceptors that approach with a low-cost configuration. [Means for solving the problem]
[0006] The electronic device of the first aspect includes: In an electronic device for repelling specific fish having electroreceptors, a generator having a power supply and an output section including a first output terminal and a second output terminal, which converts a DC voltage supplied from the power supply into an AC voltage and outputs the AC voltage from the output section; A first conducting wire, one end of which is connected to the first output terminal and the other end of which is attached to a contact object that is to be contacted by the specific fish or is disposed in the vicinity of the contact object; a second conducting wire, one end of which is connected to the second output terminal and the other end of which is attached to a portion of the contact object away from the other end of the first conducting wire, or is disposed on the opposite side of the other end of the first conducting wire across the contact object and in the vicinity of the contact object; a flexible wire, one end of which is attached to the contact object; a physical switch to which the other end of the flexible wire is fixed; a housing containing the generator and the physical switch; Equipped with When the specific fish comes into contact with the contact object and the flexible wire is pulled with a tension equal to or greater than a predetermined tension, the physical switch activates the power supply.
[0007] The electronic device of the second aspect is In the electronic device of the first aspect, a cylindrical body disposed between the container and the fish body and through which the first conducting wire, the second conducting wire, and the flexible wire pass; Further provided with:
[0008] The electronic device of the third aspect is In the electronic device of the second aspect, At least one or more rods, the outer circumferential surface of which or each has the same color as the outer circumferential surface of the cylindrical body and which are spaced apart from the cylindrical body; Further provided with:
[0009] The electronic device of the fourth aspect is In the electronic device of the third aspect, The outer circumferential surface of the cylindrical body is colored in one or more of yellow, red, and orange.
[0010] The electronic device of the fifth aspect is In the electronic device of the fourth aspect, A pattern is formed on the outer circumferential surface of the cylindrical body, The at least one rod has an outer circumferential surface formed with the same pattern as the pattern.
[0011] The electronic device of the sixth aspect is In the electronic device of the fourth or fifth aspect, The cylindrical body and the at least one rod body are arranged outside an aquaculture net that is set in the sea. [Effects of the Invention]
[0012] According to the electronic device of the first and second aspects, it is possible to repel approaching specific fish having electroreceptors with a low-cost configuration.
[0013] According to the electronic devices of the third and fifth aspects, it is possible to repel specific fish that have previously come into contact with a contact object to which one end of the flexible wire is fixed over a wider area than in configurations that do not have at least one rod body.
[0014] According to the electronic device of the fourth aspect, it is possible to repel specific fish that have previously come into contact with the contact object to which one end of the flexible wire is fixed.
[0015] According to the electronic device of the sixth aspect, it is possible to repel approaching specific fish having electroreceptors from the aquaculture net with a low-cost configuration. [Brief explanation of the drawings]
[0016] [Figure 1] 1 is a photograph (schematic diagram) of a prototype of the electronic device of the present embodiment attached to a fish body. [Figure 2] FIG. 2 is a schematic diagram of components of the electronic device of the present embodiment excluding a cylindrical body. [Figure 3] FIG. 2 is a schematic diagram of a circuit board that constitutes the electronic device of the present embodiment. [Figure 4] 4 is a diagram illustrating an example of a waveform pattern of an AC voltage output by the electronic device of the present embodiment. [Figure 5] 3A and 3B are diagrams illustrating the operation of the electronic device of the present embodiment. [Figure 6] 10A and 10B are diagrams for explaining the operation of an electronic device of an application example. DETAILED DESCRIPTION OF THE INVENTION
[0017] Overview The electronic device 10 of this embodiment (see FIGS. 1 to 5), the electronic device 10A of an application example (see FIG. 6), and several modified examples will be described below in the order of their description. Please note that in this specification, components having similar functions are denoted by the same or similar reference numerals in each drawing referred to in different embodiments, etc.
[0018] <<Present Embodiment>> First, the present embodiment will be described. The electronic device 10 of this embodiment will be described below in terms of its functions, configuration, operation, and effects with reference to the drawings.
[0019] <Functions and Configuration of Electronic Device of This Embodiment> FIG. 1 is a photograph (schematic diagram) of a prototype of an electronic device 10 of this embodiment attached to a fish TN (an example of a contact target). Here, the fish body TN refers to fish (both dead and alive), bait, lure, etc. that can be prey for a specific fish described later. The electronic device 10 is used while submerged in seawater SW, and has the function of repelling fish having the organ of Lorenzini, such as sharks SK and rays RY, or more broadly, fish having electroreceptors (specific fish) (see Figure 5). As shown in FIG. 1, the electronic device 10 includes a main body 100, a flexible wire 200, a pair of conductive wires 300, and a cylindrical body 400.
[0020] <Main body> FIG. 2 is a schematic diagram of the components of electronic device 10 excluding cylindrical body 400 . 1 and 2, the main body 100 is, for example, a cylindrical member. The main body 100 has a housing 110 (an example of a storage portion), a hook 120, and a circuit board .
[0021] (housing and hook) As an example, the housing 110 is a bottomed cylinder made of resin with an opening 112 formed at one end. As shown in Fig. 2, the housing 110 accommodates the flexible wire 200, a portion of the pair of conducting wires 300, and the circuit board 130 therein. The remaining portions of the flexible wire 200 and the pair of conducting wires 300 protrude from the opening 112 to the outside. The opening 112 is sealed with a sealant (not shown). The hook 120 is fixed to the end of the housing 110 opposite the opening 112. The hook 120 has an openable / closable part 122, and is connected to the housing 110 by passing a fishing line FL (see FIG. 5) through the openable / closable part 122, for example.
[0022] (circuit board) FIG. 3 is a block diagram of the circuit board 130 that constitutes the electronic device 10. As shown in FIG. The circuit board 130 has a printed wiring board 131, a conversion unit 132, a power supply 133, a control unit 134, a memory unit 135, a selection switch 136, an output unit 137, and a physical switch 138 (an example of a physical switch), and together they form an electrical circuit. In this embodiment, the components on the circuit board 130 other than the physical switch 138 are referred to as a generator 130A.
[0023] A circuit pattern (not shown) is printed on the printed wiring board 131. On the printed wiring board 131, a conversion unit 132, a power supply 133, a control unit 134, a storage unit 135, a selection switch 136, an output unit 137, and a physical switch 138 are mounted. The conversion unit 132 is electrically connected to the power supply 133 and the output unit 137, and has a function of converting a DC voltage supplied from the power supply 133 into an AC voltage. The AC voltage converted by the conversion unit 132 is output from the output unit 137. The power supply 133 is, for example, a battery that can be attached to or detached from the printed wiring board 131, a mobile battery, or the like. The control unit 134 is electrically connected to the conversion unit 132 and the memory unit 135, and controls the conversion unit 132 so that the DC voltage supplied from the power supply 133 is converted into an AC voltage of one of a plurality of waveform patterns (see Figure 4 (Figure 4 is an example of a waveform pattern)) stored in the memory unit 135. As described above, the storage unit 135 stores a plurality of waveform patterns with different waveforms as the AC voltage to be output from the output unit 137. The selection switch 136 is a switch for selecting one of the waveform patterns stored in the storage unit 135 . The output section 137 has a first output terminal 137A that outputs an AC voltage, and a second output terminal 137B to which a reference voltage (0V) is applied.
[0024] The physical switch 138 has a function of forming an electric circuit together with the generator 40A and the pair of conductors 300 to activate the power supply 133. One example of the physical switch 138 is a magnetic switch. One end (the other end) of the flexible wire 200 is fixed to the physical switch 138 (see FIG. 2).
[0025] Next, a plurality of waveform patterns stored in storage unit 135 will be described with reference to Fig. 4. Fig. 4 shows an example of a waveform pattern of an AC voltage output by electronic device 10.
[0026] The waveform pattern shows the waveform (time change of output voltage) of the AC voltage applied to the first output terminal 137A relative to the voltage of the second output terminal 137B to which the reference voltage (0V) is applied. The waveform pattern is, for example, a periodically changing square wave. The amplitude AP of the waveform pattern is set to be, for example, 1 V or more and 2000 kV or less. The period T of the waveform pattern is set to, for example, 0.01 seconds or more and 3.0 seconds or less. The waveform pattern is, for example, a pattern in which a fundamental wave consisting of a time T1 during which maximum output is output and a time T2 during which the reference voltage is output is repeated multiple times.
[0027] <Flexible wire> The flexible wire 200 is, for example, an insulating string. One end 202 of the flexible wire 200 is attached to the fish TN as shown in Fig. 1. The other end 204 is fixed to the physical switch 138 as shown in Fig. 2 or as described above. When the flexible wire 200 is pulled with a tension equal to or greater than a predetermined tension, the physical switch 138 activates the power supply 133 .
[0028] A pair of wires 1 and 2, the pair of conductive wires 300 is made up of a first conductive wire 310 and a second conductive wire 320. Both have the same structure. As shown in FIG. 2, one end of the first conducting wire 310 is connected to the first output terminal 137A, and the other end 312 (see FIG. 2) is attached to the fish TN as shown in FIG. As shown in Fig. 2, one end of the second conducting wire 320 is connected to the second output terminal 137B, and the other end 322 (see Fig. 2) is attached to the fish body TN as shown in Fig. 1. Here, the other end 322 of the second conducting wire 320 is attached to a portion of the fish body TN that is distant from the other end 312 of the first conducting wire 310 (not shown).
[0029] <Cylinder> The cylindrical body 400 is disposed between the main body 100 (or housing 110) and the fish body TN, and has the function of passing the pair of conducting wires 300 and the flexible wire 200 through it; in other words, it has the function of bundling the pair of conducting wires 300 and the flexible wire 200 between the main body 100 and the fish body TN. The cylindrical body 400 also has the function of being visible to specific fish such as sharks SK and rays RY, thereby repelling the specific fish. The mechanism of the latter function will be explained later in the operation of the electronic device 10 of this embodiment. As shown in Fig. 1, the outer peripheral surface of the cylindrical body 400 is patterned, for example. Specifically, the outer peripheral surface is painted with a zebra pattern. In this example, the zebra pattern is composed of yellow and black portions repeated along the axial direction. That is, the outer peripheral surface of the cylindrical body 400 is colored yellow.
[0030] The above is a description of the functions and configuration of the electronic device 10 of this embodiment.
[0031] <Operation and Effects of the Electronic Device of the Present Embodiment> Next, the operation and effects of the electronic device 10 of this embodiment will be described with reference to FIG.
[0032] <Preparation> First, a user (not shown) attaches the electronic device 10 to a fishing line FL and a fish TN (see FIG. 1), and then the user submerges the electronic device 10 in seawater SW (see FIG. 5).
[0033] Shark SK's Reaction (1) When the shark SK finds the fish body TN, it approaches the fish body TN. It is also thought that the shark SK memorizes the cylindrical body 400 with a yellow outer surface on the upper side of the fish body TN. Although the shark SK is visually color blind, yellow (red and orange) stands out in contrast in the blue seawater SW and can be easily distinguished by the shark SK. Since many of the shark SK's prey are translucent or reflective, yellow resembles these and attracts the shark SK's attention. The shark SK repeatedly swims around the fish body TN, touching it or taking it into its mouth and spitting it out. Eventually, the shark SK tries to take the fish body TN into its mouth and swallow it. As a result, tension is applied to the flexible wire 200 as the fish body TN moves. As a result, tension greater than the set tension is applied to the flexible wire 200, and the physical switch 138 activates the power supply 133 (see FIG. 3).
[0034] Operation of the Circuit Board 130 When the power supply 133 is activated, a DC voltage is supplied from the power supply 133 to the conversion unit 132. The conversion unit 132, under the control of the control unit 134, converts the DC voltage supplied from the power supply 133 into an AC voltage of a waveform pattern (see FIG. 4 as an example) stored in the memory unit 135. Then, a reference voltage is applied to the second output terminal 137B, while an AC voltage (variable voltage) is applied to the first output terminal 137A. Accordingly, the AC voltage (variable voltage) is applied to the first conductor 310 connected to the first output terminal 137A, and the reference voltage is applied to the second conductor 320. As a result, an electric field is formed between the other end 312 of the first conductor 310 and the other end 322 of the second conductor 320, which are spaced apart inside the fish body TN. Because the fish body TN is an electrical conductor, a weak current flows between the first conductor 310 and the second conductor 320 via the fish body TN. In addition, the time from when the shark SK puts the fish body TN into its mouth until a weak current flows through the fish body TN is, for example, less than 1 second.
[0035] Shark SK's Reaction (2) When a weak current flows through the fish body TN, a weak current also flows through the shark SK. In other words, if the shark SK comes into contact with the fish body TN and tension greater than the set tension is applied to the flexible wire 200, the shark SK will be electrocuted. As a result, the shark SK will recognize the fish body TN or the cylindrical body 400 with a yellow outer surface as a dangerous object. Some sharks SK may be electrocuted once and then move away from the fish body TN before coming into contact with the fish body TN again, but will be electrocuted each time. Therefore, the shark SK will recognize (learn) that the fish body TN or the cylindrical body 400 are dangerous objects and will not intentionally approach them.
[0036] As described above, the electronic device 10 of this embodiment can repel approaching sharks SK (or rays RY) with a low-cost configuration. Furthermore, the electronic device 10 of this embodiment can repel sharks SK (or rays RY) that have come into contact with the fish TN in the past. Furthermore, unlike the case of Patent Document 1, the electronic device 10 of this embodiment does not need to consume power constantly to repel sharks SK (or rays RY).
[0037] The above is a description of the operation and effects of the electronic device 10 of this embodiment.
[0038] <Electronic devices as application examples> Next, an application example will be described. Fig. 6 is a diagram for explaining the operation of an electronic device 10A of an application example. Fig. 6 schematically shows the electronic device 10A, an aquaculture net CN, a plurality of cultured fish CF cultured in the aquaculture net CN, and two sharks SK targeting the plurality of cultured fish CF in the aquaculture net CN from outside the aquaculture net CN. Hereinafter, the configuration of the aquaculture net CN will be briefly described with reference to Fig. 6, and then the electronic device 10A of the application example will be described in terms of its function, configuration, operation, and effects. Regarding the application example, only the differences from the above-described embodiment will be described.
[0039] <Configuration of aquaculture net> Here, as an example, the cubic aquaculture net CN has wire mesh (not shown) arranged on its bottom and four side surfaces. Therefore, it is extremely difficult for sharks SK to enter the aquaculture net CN from the bottom and four side surfaces. In contrast, the upper surface of the aquaculture net CN is made of string-like netting (not shown) because the aquaculture net CN is moved up and down in the seawater SW and the string-like netting can be easily opened and closed by aquaculture farmers. Therefore, it is easier for sharks SK to enter the aquaculture net CN from the upper surface than from the upper surface. Furthermore, when the aquaculture net CN is completely submerged in the seawater SW (i.e., as illustrated in Figure 6), sharks SK will try to break the string-like netting on the upper surface and enter the aquaculture net CN.
[0040] <Functions and configuration of electronic devices as application examples> The electronic device 10A of the application example is used while being placed in seawater SW, and has the function of repelling fish (specific fish) that have the organ of Lorenzini, such as sharks SK and rays RY (see Figure 6). The electronic device 10A includes the electronic device 10 of this embodiment (see FIGS. 1, 5, etc.) and a plurality of rod bodies 500.
[0041] In the example of FIG. 6, the number of the plurality of rods 500 is, for example, four (rods 500A, 500B, 500C, and 500D). The outer surfaces of rod bodies 500A, 500B, 500C, and 500D are colored the same color (yellow, for example) as the outer surface of cylindrical body 400 of electronic device 10 (see Figure 5), and are positioned away from cylindrical body 400 of electronic device 10. The outer circumferential surfaces of the rod bodies 500A, 500B, 500C, and 500D are provided with the same pattern (a zebra pattern, for example) as the outer circumferential surface of the cylindrical body 400 (see FIG. 5). Moreover, the rod bodies 500A, 500B, 500C, and 500D are arranged outside (or outside) the aquaculture net CN.
[0042] The above is a description of the function and configuration of the electronic device 10A of the application example.
[0043] <Operation and effects of electronic devices in application examples> Next, the operation and effect of the electronic device 10A of the application example will be described with reference to FIG.
[0044] First, a user (not shown) attaches the electronic device 10 to a fishing line FL and a fish TN (see FIG. 1). Next, the user submerges the electronic device 10 above the aquaculture net CN in seawater SW (see FIG. 5). Furthermore, the user attaches the fishing line FL to the upper ends of the rods 500A, 500B, 500C, and 500D, and submerges the rods 500A, 500B, 500C, and 500D above the aquaculture net CN and away from the electronic device 10.
[0045] The subsequent reaction of the shark SK is the same as reaction (1) and reaction (2) of the shark SK described in this embodiment. In the case of the application example, the shark SK also recognizes (learns) that the fish body TN or the cylindrical body 400 is a dangerous object and intentionally does not approach them, as in the case of the above-described embodiment. However, in the application example, the shark SK that has the same color or pattern as the cylindrical body 400 also recognizes the rod bodies 500A, 500B, 500C, and 500D as dangerous objects, just like the cylindrical body 400, and does not approach the rod bodies 500A, 500B, 500C, and 500D either.
[0046] As described above, compared to the above-described embodiment, electronic device 10A of the application example can repel sharks SK (or rays RY) that have previously come into contact with fish TN fixed to electronic device 10 over a wider range. Here, "wide range" means not only the range near cylindrical body 400 but also the range near rod bodies 500A, 500B, 500C, and 500D. Furthermore, electronic device 10A of the application example can repel approaching sharks SK (or rays RY) from the aquaculture net CN located below electronic device 10 and rod bodies 500A, 500B, 500C, and 500D with a low-cost configuration.
[0047] The above is a description of the operation and effects of the electronic device 10A of the application example.
[0048] <<Multiple Modifications>> As described above, the present invention has been described with reference to the present embodiment and application examples, but the technical scope of the present invention is not limited to these embodiments. For example, the technical scope of the present invention also includes the following modifications.
[0049] <Variation 1> For example, the AC voltage output from the output unit 137 has been described as being a square wave as shown in Fig. 4. However, it may be a sine wave or other periodic wave.
[0050] <Variation 2> For example, it has been explained that an example of the AC voltage output from the output unit 137 is a square wave as shown in Fig. 4. However, a counter (not shown) that counts the number of outputs from the output unit 137 may be provided on the circuit board 130, so that the amplitude AP of the AC voltage to be output increases as the count (the number of times the output unit 137 outputs as a result of the shark SK coming into contact with the fish body TN) increases. This makes it easier for the shark SK to be electrocuted as it receives a strong stimulus the more it comes into contact with the fish body TN, making it easier to drive away the shark SK.
[0051] <Variation 3> For example, it has been explained that an example of the AC voltage output from the output unit 137 is a square wave as shown in Fig. 4. However, a counter (not shown) that counts the number of outputs from the output unit 137 may be provided on the circuit board 130, and the waveform of the AC voltage to be output may be changed as the count (the number of times the output unit 137 outputs as a result of the shark SK coming into contact with the fish body TN) increases. This means that the closer the shark SK comes to the fish body TN, the more different stimuli the shark SK will receive and the more electric shock it will receive, making it harder for the shark SK to get used to the electric shock. As a result, it becomes easier to chase away the shark SK.
[0052] <Variation 5> For example, it has been described that the outer circumferential surface of the cylindrical body 400 and the outer circumferential surfaces of the plurality of rod bodies 500 are colored the same yellow. However, instead of yellow, they may be colored red or orange. Also, a combination of two or more of these colors may be used.
[0053] <Variation 6> For example, it has been described that the outer circumferential surface of the cylindrical body 400 and the outer circumferential surfaces of the plurality of rod bodies 500 are colored the same yellow. However, instead of yellow, they may be colored red or orange. Also, a combination of two or more of these colors may be used.
[0054] <Variation 7> For example, it has been described that the outer circumferential surface of the cylindrical body 400 and the outer circumferential surfaces of the plurality of rod bodies 500 are marked with the same zebra pattern including the same yellow. However, the pattern does not have to be a zebra pattern as long as one or more of the colors yellow, red, and orange are used. For example, polka dots or other patterns may be used. Furthermore, the outer circumferential surfaces may be unpatterned and marked with a single color of yellow, red, or orange.
[0055] <Variation 8> For example, the number of rods 500 has been described as four (see FIG. 6) as an example. However, the number of rods 500 may be any number other than four. Alternatively, the number may be one.
[0056] <Variation 9> For example, the plurality of rod bodies 500 are sunk (placed) above the aquaculture net CN. However, some or all of the rod bodies 500 may be arranged around the aquaculture net CN other than on the upper side thereof. Also, for example, the rods constituting the housing of the aquaculture net CN (boundary portions between adjacent surfaces) may be the rod bodies 500.
[0057] <Modification 10> For example, in this embodiment, the other end 312 of the first conducting wire 310 and the other end 322 of the second conducting wire 320 are described as being attached to the fish body TN (see FIG. 1). However, one or both of the other end 312 of the first conducting wire 310 and the other end 322 of the second conducting wire 320 may be arranged in the vicinity of the fish body TN (meaning, for example, an area within 3 m of the fish body TN).
[0058] The above is a description of several modified examples. [Explanation of symbols]
[0059] 10 Electronic equipment 10A electronic equipment 40A generator 100 units 110 Housing (an example of a housing) 112 Aperture 120 hooks 122 Opening and closing section 130 Circuit Board 130A generator 131 Printed Wiring Board 132 Conversion Unit 133 Power supply 134 Control Unit 135 Storage section 136 selection switch 137 Output section 137A 1st output terminal 137B Second output terminal 138 Physical Switch 200 flexible wire 202 one end 204 other end 300 pairs of conductors 310 1st conductor 312 other end 320 Second Conductor 322 other end 400 cylinder 500 Multiple Rods 500A rod 500B rod 500C rod 500D rod AP amplitude CF farmed fish CN aquaculture net FL Fishing Line RY Ray (an example of a specific fish) SK shark (an example of a specific fish) T period T1 time T2 time TN Fish (an example of a contact object)
Claims
1. In an electronic device for repelling specific fish having electroreceptors, a generator having a power supply and an output section including a first output terminal and a second output terminal, the generator converting a DC voltage supplied from the power supply into an AC voltage and outputting the AC voltage from the output section; a first conducting wire having one end connected to the first output terminal and the other end attached to a contact object that is to be contacted by the specific fish or disposed in the vicinity of the contact object; a second conducting wire, one end of which is connected to the second output terminal and the other end of which is attached to a portion of the contact object away from the other end of the first conducting wire, or is disposed on the opposite side of the other end of the first conducting wire across the contact object and in the vicinity of the contact object; a flexible wire, one end of which is attached to the contact object; a physical switch to which the other end of the flexible wire is fixed; a housing containing the generator and the physical switch; Equipped with When the specific fish comes into contact with the contact object and the flexible wire is pulled with a tension equal to or greater than a predetermined tension, the physical switch activates the power supply. electronic equipment.
2. a cylindrical body disposed between the housing and the contact object and through which the first conducting wire, the second conducting wire, and the flexible wire pass; Further comprising: The electronic device according to claim 1 .
3. At least one or more rods, the outer circumferential surface of which or each has the same color as the outer circumferential surface of the cylindrical body and which are spaced apart from the cylindrical body; Further comprising: The electronic device according to claim 2 .
4. The outer circumferential surface of the cylindrical body is colored in one or more of yellow, red, and orange. The electronic device according to claim 3 .
5. A pattern is formed on the outer circumferential surface of the cylindrical body, The at least one rod has an outer circumferential surface formed with the same pattern as the pattern.
5. The electronic device according to claim 4.
6. The cylindrical body and the at least one rod body are arranged outside the aquaculture net installed in the sea.
6. The electronic device according to claim 4 or 5.