JPS62180995A - Electric screen generator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Agricultural Application] This invention provides a method for cultivating fish and shellfish in seawater (
This invention relates to an electric screen generating device for generating a 'nausea screen' for fish and shellfish.

[Conventional technology]

Generally, when cultivating fish and shellfish, a seawater G cage is set up, and fish and shellfish are cultured within the cage.
Normally, a net is strung around the seawater to form a cage, and the net prevents fish and shellfish from escaping to the outside of the cage and preventing fish and shellfish from entering the inside of the cage, but in the early stage of aquaculture, Cultured fish are still young fish with a body length of several meters, and in order to block the swimming of these young fish, it is necessary to use a very fine mesh net to be placed in the seawater.

However, the tidal change seems to be several meters! In the wild areas, the nets are easily damaged, and even if the fish are accidentally damaged, young fish can easily escape, resulting in the inconvenience of requiring a great deal of labor and expense to maintain and maintain the nets. In order to solve this problem, conventionally, the sea area where the fish tank is installed is selected to be a place with deep water depth, seabed topography, almost flat surface, calm and little tidal change, but these conditions are:
jζ plus ff”k ”l.

Even so, the nets may be washed away by typhoons or damaged by ships coming into contact with them. Definitely G
The problem is that it is impossible to block the swimming of these fish and shellfish.

In addition, when carrying out large-scale aquaculture such as on marine farms, the total length of the nets used is extremely long, and the effort and cost required for maintenance of the nets is correspondingly large. Using nets for isolation is not the best strategy for large-scale aquaculture.

Therefore, the present applicant has proposed an electric screen generator θ shown in FIG.'f$3.

That is, as shown in No. 3 R&L, a plurality of vertically extending bar-shaped conductive electrodes (1a) are arranged in seawater at approximately equal intervals, and each electrocardiographic electrode (Cl2) is electrically connected to each other. Form an electrode array (2a), and similarly, place multiple vertical conductive conductive electrodes (Ib1g, IcI) in seawater using the same pinch as in the case of the il electrode array (2a).
Arranged at intervals, the (lb)s and (ic) are connected to each other by connecting bodies not shown. S electrical tax g 2. Third electrode row (2b), (2C)
, and each electrode row (2a), (2b), (2C1
are arranged in parallel to each other, and electric screen generators (not shown) are arranged in parallel to each other, for example, from the first
, 311<'; between each electrode row (2a) to (2C) so that the i rows (2a) and (2C) are at ground potential and the second row (2b) in the center is at a predetermined potential. Apply DC voltage, AC voltage, or pulse voltage to each electrode row (2
A double electric screen is generated between a) and (2C).

Fish and shellfish that have entered such an electric screen are electrically stimulated, and when the electric field strength is low, they exhibit a startled state, and as the electric field strength increases, they experience slight numbness, paralysis, and even asphyxia. It shows an electric shock reaction and becomes unable to swim through the electric screen, and each electrode row (2
If a) to (2C) are installed, fish and shellfish will be confined within the area surrounded by the electric screen, and the swimming of fish and shellfish will be reliably blocked without using a net like in the past. It is not affected by ocean conditions such as tide level, tide, water depth, or weather conditions such as typhoons, making it suitable for large-scale aquaculture such as on marine farms.

At this time, the first. Between the second electrode row (2a) and (2b) 3
and skewer 22. The third electrode row (2bl, (2C1) is different from the distance between the first and second electrode rows (2a).
, (Electric field strength between 2b1 2nd 3rd electrode row (2
b), (Double electric screens are formed with different electric field intensities between 2C1 and different degrees of electrical stimulation received by fish and shellfish.) For example, the third electrode row (
2C17, inside r (till & each electrode row (2a)
~ (2C) is arranged, and the funeral 2.1. third electrode row (2b),
(The electric field strength between 2C1 is I.

2nd,'zl pole row (2a), (2b1) If it is made smaller than between (2b1), when the cultured fish and shellfish in the specific bend enters the etched air screen, the berthed fish and shellfish will have the electric field strength of The small 2nd and 3'th column pole array (2bl, (2C1
There were 3 in between and received a weak 1% 1 spirit stimulation, 'i':'
・Ki till Geki G 8 easily without receiving damage
J13 Inside G is going back, 7 from outside the above-mentioned specific gate.
1. When a foreign fish or shellfish enters the electric screen, the skin of the foreign fish or shellfish has a strong electric field strength. The second electrode row (2a,) (3 between 2b1) receives strong electrical stimulation and exhibits reactions such as mild numbness and paralysis, and becomes unable to swim through the electric screen, ensuring that the cultured fish and shellfish cannot be safely harvested. It becomes possible to protect.

By the way, for example, if a fish that has entered the electric screen is parallel to the direction of the electric field, a current will flow through the fish due to the potential difference between two points separated by a distance equivalent to the body length. Even if the electric field strength is low, the potential difference between each fish becomes large, and the electric field that can pass through the fish body increases to a certain extent, causing an electric shock reaction.However, in the case of small fish with short bodies, if the electric field strength of the electric screen is low, Since the potential difference between the head and the tail does not increase, the current flowing inside the fish does not increase, and the fish does not exhibit an electric shock reaction.

In other words, even if the electric field strength is the same, large fish and small fish will receive different degrees of electrical stimulation from the electric screen, and the response reactions shown by large fish and small fish will also differ. When each market column (2a) to (2C) is created to surround a specific area as shown
The electric field strength between the 2nd and 3rd electric discharge columns (2b) and (2C) of 111.1 of the 1" Takumi screen was set to a value that would receive surprisingly weak electrical stimulation from large fish. When set to , small fish are placed inside the second and third electric rows (2b)
It becomes possible to swim through the space between (2C) without receiving electrical stimulation and infiltrate to the space between the outside (2a1. 1゜Second electric train (2al, (suddenly receives a strong electric shock between 2b1, causing paralysis, etc.)

Also, conversely, the second. If the electric field strength between the third electrode rows (2b) and (2C) is set to a value that will give small fish surprising electrical stimulation, large fish will Column (2b), (A person suddenly receives a strong electrical stimulation between 2C1 and may suffer from paralysis, etc.)

[Problem that the invention seeks to solve]

As mentioned above, fish and shellfish that are paralyzed by strong electrical stimulation usually lose their buoyancy and sink toward the GA sea floor, so paralyzed fish and shellfish are exposed to strong electrical stimulation. There are four problems: the fish can no longer be resuscitated and eventually die, and there is no way to protect farmed fish and shellfish from damage caused by electrical i1j modification.

Therefore, the technical object of this invention is to enable fish and shellfish to automatically escape from the electric screen and be resuscitated even if they become paralyzed or the like due to strong electrical stimulation.

[Failure to solve the problem]

This invention has been made with the above-mentioned points in mind, and includes a plurality of electrode rows each formed in seawater by a plurality of conducting electrodes arranged at approximately equal intervals and arranged parallel to each other. , a connection body that electrically connects the conductive electrodes of each of the electrode rows to each other, and a 7i-air screen that applies an electric current rE between each of the electrode rows so that each of the electrode rows has a different potential G. The air screen generating device is equipped with a power source for generating wind, and is formed by forming a slope on the seabed, and forming a plurality of slopes perpendicular to the direction of slope of the slope.
This is an electric screen IJ-generating device characterized in that each of the electrode rows described above is arranged on the gland.

[Effect]

Therefore, in the present invention, a plurality of electrode arrays are disposed on a plurality of lines parallel to the seawater and perpendicular to the direction of inclination of the slope of the seabed, and a % source for electric screen generation is provided. Accordingly, an electric field is applied between each surface=+i rows so that the potential of each electrode row is different, and an electric screen is formed between each electrode row.

At this time, if the electrically stimulated fish or shellfish that have invaded the electric screen cause a paralysis, and the paralyzed fishing gear sinks toward the seabed, the fish or shellfish may drift down the slope. When the fish and shellfish in the paralyzed state are recovered from the paralyzed state, the fish and shellfish are stimulated electrically. , 1 is prevented from causing damage.

[1 example with example G, this + April, its implementation 1 evening 11 r: +s 1 Figure 5 will be explained along with the 21st part 1.

First, the 11th column I, which shows the 1st and 4th columns of January, will be explained.

' In Figure 1, the same symbols as in Figure 3 indicate the same or equivalent items, and the difference from Figure 3 is that the third 'An artificial slope (3) is formed toward the city pole row (2C), and each electrode row (2a) to (2C) is arranged on a line perpendicular to the oblique direction around 1 of the slope (3). This is the point that was established.

As shown in FIG.
If the farmed fish fF) becomes paralyzed and sinks to the seabed as shown by the arrow due to the electrical stimulation it receives between 3 and (3), the farmed fish fF) will swamp on the slope (3) and flow. The paralyzed cultured fish (if") will automatically escape from the electric screen, and will eventually survive for 1 time, preventing the farmed fish (F) from being injured by the '+1" 4 mechanical stabs. It can be prevented.

The second section 1 showing another example will be explained.

In Figure A.2, the same symbols as in Figure 1 indicate the same things, and the differences from Figure 1 are ``g l 'r51% ta 1j
(2+"+ +1i1111ko,・■I-3'
Same r, ff as the sleeping rows (2a)-(2C) (the fourth formed by a plurality of conductive small plates (1d) arranged at equal intervals) (evening newspaper (2d) is arranged, , slope around 1 (3
) is formed on the opposite side of the inclined surface (4) with an inverted V-shaped cross section; This is the point where (2d) is taken into account.

At this time, the fourth skewer 1 electrode row (2d), (2a
) is the Noah q field strength between 2nd and 2nd. Third electrode row (2b), (2
If the temperature is the same as that between O2, the fourth. The first electrode row (2d1.
;31. (2b) When a foreign fish (F)' invades between the two, the foreign fish (F)' paralyzed by generous stimulation at ν moves along the slope (4) to the outside of the first conductive electrode array (2d). The foreign fish (1, >) r
It also prevents unnecessary damage to the

The conductive electrodes (Ia) to (Idl) are not limited to the rod shapes described above.

Moreover, it goes without saying that the number of electrode rows may be five or more.

〔Effect of the invention〕

I'm Yoko Ni, the creator of this invention's electric screen [
According to α, there is a slope L31. ! form 41,
Since the rows of goggles (2a) to (2d) were placed on the machine perpendicular to the slope direction G of the slope +3) and (4+), the fish and shellfish that entered the intake screen could be paralyzed by electrical stimulation. Even if you wake up, 1. Paralyzed fish and shellfish will fall on the slope f31.
Flowing along the shore of +41, these fish and shellfish were able to voluntarily escape from the electric screen and revive themselves.
It is possible to prevent damage caused by electricity to fish and shellfish, and to protect farmed fish and shellfish more reliably.
The effect is extremely large.

[Brief explanation of drawings]

FIGS. 1 and 2 are schematic diagrams of embodiments of an electric screen generator according to the present invention, and FIG. 3 is a perspective view of an electric screen generator to be compared with the present invention. (Ial~(1d)-conductive electrode, (2a l-(2d)
l ・*i Evening row, +31, +41...slope around 1. Agent: Patent attorney Fuji 1) Mr. Ryutabe 2 Figure///, /'/

Claims (1)

[Claims] (1) A plurality of conductive electrodes are arranged in seawater at approximately equal intervals and are arranged parallel to each other, and the conductive electrodes of each of the electrode rows are electrically connected to each other. In an electric screen generation device comprising connected connectors and a power source for generating an electric screen that applies a voltage between each of the electrode rows so that each of the electrode rows has a different potential, an inclined surface is formed on the seabed. An electric screen generating device characterized in that each of the electrode rows is arranged on a plurality of lines perpendicular to the direction of inclination of the inclined surface.