WO1993011664A1 - Guiding-mechanism for unstressed guiding of living fish in water - Google Patents

Guiding-mechanism for unstressed guiding of living fish in water Download PDF

Info

Publication number
WO1993011664A1
WO1993011664A1 PCT/DK1992/000369 DK9200369W WO9311664A1 WO 1993011664 A1 WO1993011664 A1 WO 1993011664A1 DK 9200369 W DK9200369 W DK 9200369W WO 9311664 A1 WO9311664 A1 WO 9311664A1
Authority
WO
WIPO (PCT)
Prior art keywords
guiding
fish
conductors
conductor
size
Prior art date
Application number
PCT/DK1992/000369
Other languages
French (fr)
Inventor
Hans H. Haraldsted
Steenstrup Claus Resen
Steenstrup Per Resen
Steenstrup Jens Resen
Original Assignee
Reson System A/S
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 Reson System A/S filed Critical Reson System A/S
Publication of WO1993011664A1 publication Critical patent/WO1993011664A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K15/00—Devices for taming animals, e.g. nose-rings or hobbles; Devices for overturning animals in general; Training or exercising equipment; Covering boxes
    • A01K15/02—Training or exercising equipment, e.g. mazes or labyrinths for animals ; Electric shock devices ; Toys specially adapted for animals
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00—Culture of aquatic animals
    • A01K61/90—Sorting, grading, counting or marking live aquatic animals, e.g. sex determination

Definitions

  • the invention relates to a guiding-mechanism for un- stressed guiding of living fish in water.
  • the sys ⁇ tem has been supplied with a sonar-sound-apparatus in the front of propelling boats, which drag the filters. And further, this extra equipment has been combined with electrical loose hanging chains, which then shall force and scare the fish to a panic and a stressed pro ⁇ pulsion.
  • the equipment has only been used as a scaring means to drive all fish at the same time totally away from a riv ⁇ er, where a planned explosion is to take place.
  • a current-carrying guiding arrangement laid on the bottom of a basin, surrounded by a magnetic field for guiding fish and specifically activated especially for a speci ⁇ fied size of fish. It is able to consist of guiding-pas ⁇ sages, established via especially two conductors, but where still the total system can exist of a wide spec ⁇ trum of current-carrying conductors arranged for a differentiated weight as size-guiding.
  • the present invention uses an observation, which many fisherman have made "at sea”, where they have noticed on the bottom of he sea, where highvoltage cable has been laid,- that the cable, which is current-carrying, and which therefore has had a magnetic field around it self, worked as an unbreakable and not visible border. It has been observed that, for example big shoals of herrings are present on one side of a cable, while just on the other side it has not been possible to fish any herrings. And the same observation has been valid for other species of fish.
  • the manner of the working invention can generally be expressed as follows: a row of conductors have been laid on the bottom of a basin, beaming out from a regis ⁇ ter-unit, where this for example, can or has registered the weight as the size of the fish. Then after a regis- tering, especially where the sensor-equipment in the register-unit is registering one fish at a time, an electrical magnetic guiding-arrangement can be activat ⁇ ed.
  • the guiding system can be activated as a running guiding, via a sectional division of a single conductor along its length and by being able to be com ⁇ puter controlled, so that the guiding follows the fish as it moves along and by the conductor. And, for exam ⁇ ple, by at the same time being able to switch off in front of and behind the currently guided fish, but still being dependent on and adjusted to the actual gui ⁇ ded nearness or closeness of the guided row of fishes in relation to one another, and so guided that it follows the fish to its new room or box.
  • two mutually belonging passages- conductors can be equipped with an electrical conducting cross system or bottom system, which magnetically drives the fish ahead and which will prevent the fish coming from behind from swimming along ⁇ side or "close to".
  • Fig. 1 shows a guiding mechanism for living fish in water, integrated with a register unit
  • Fig. 3 shows a section of the guiding-mechanism with "running guiding", and a cross-guiding unit and
  • Fig. 4 shows a guiding-mechanism for also guided or limited unit-field.
  • Fig. 1 shows a guiding mechanism 1 for living fish 3 in water integrated with a register unit 4, where the fish 3' first are guided through the register unit 4, by which the size and the weight can be registered via a computer.
  • the computer can then give a message about the - correct guiding-passage 1 for guiding 9 of a specific size of fish 3.
  • the guiding passage 1 and 1 can ideally come especially two by two working from the register unit 4 like sunbe ⁇ ams 1 and 1.
  • the fish 3 will now automatically swim be- tween the current-carrying and magnetic 2 conductors 1, without any stress. And the ideal at the construction and the mutual placing of the conductors 1 is, that they are spreading apart 1 and 1 gradually in distance after the register unit 4. Therefore, the fish will au ⁇ tomatically seek more "moveable" 9 freedom.
  • Fig. 3 shows a section of the guiding mechanism 1 and 1 with running guiding 2' and a cross-guide-unit 6, where the cross unit 6 running indirectly 5 would push the fish 3 forward 5, towards, for example, the unit area for the same size of fish 3.
  • the system 1 and 1 with cross unit 6 could ideally run synchronously together with the guiding 2' , and the swimming speed of the fish 5 can thus perhaps by this be accelerated 3.
  • the cross-unit 6 will especially also hold the fish, which are swimming after each other 3 and 3' and a litt ⁇ le apart from each other > so that there will be an ide ⁇ al separation distance between them.
  • the cross guiding system.6 with the guiding system 1 and 2' could perhaps, modified a little independent of the size A, also be used before the register unit 4.
  • Fig. 4 shows a guiding mechanism 1 and 1 for also guided or limited fields of units 7, where the limiting to this field of unit reservoirs 7 can be established via a conducting limit-wall 7.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Zoology (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Toys (AREA)
  • Farming Of Fish And Shellfish (AREA)

Abstract

A guiding mechanism (1 and 1) for unstressed guiding (9) of living fish (3) in water, which consists of a current carrying conductor on the bottom or at another horizontal position. An electric or magnetic field is obtained around the conductor. The guiding mechanism can consist of pairs of beams of current carrying conductors which are activated after registering the size of the fish thereby guiding a specified size or kind of fish in between a pair of beams and consequently in a certain direction.

Description

GUIDING MECHANISM FOR UN-STRESSED GUIDING OF LIVING FISH IN WATER.
The invention relates to a guiding-mechanism for un- stressed guiding of living fish in water.
Hitherto there is known equipment from a Russian patent- publication no. SU 914.011, where fish are guided me¬ chanically as well as electrically via electrical filt- ters, which at the same time are moved forward. And further, this guiding is combined with accustical for¬ ward-pointing sonar-noise. The disadvantage to this "rough" equipment is, that it only can guide all fishes of different sizes inside of a specified large area and cross-section area, and at the same time drive them mechanically forward.
In order that this system shall work optimally, the sys¬ tem has been supplied with a sonar-sound-apparatus in the front of propelling boats, which drag the filters. And further, this extra equipment has been combined with electrical loose hanging chains, which then shall force and scare the fish to a panic and a stressed pro¬ pulsion. The equipment has only been used as a scaring means to drive all fish at the same time totally away from a riv¬ er, where a planned explosion is to take place.
Hitherto it is also known from another Russian patent- publication no. SU 472.644, to use a large net, and then to lower vertically placed electrodes and combine these with accoustically given sonarsound in the water. The system is activated almost constantly, and it is only a large.mass of fish that one can hold inside the area of the net. However in the question of the size, it is intended to be able to sort the fish quantity by changing the length of the vertically hanging electrodes as well as by changing the space of activating time. However, this demands that the fish first shall swim to the specific electrode, and that it will stay there. This is physi¬ cally impossible,as the fish coming from behing will push on, to be able to swim round together with the whole bio-mass of the fish. It will therefore be random, how many small as respec¬ tively big fish there will be near to a specific verti¬ cally hanging electrode that shall be activated just at the moment of swimming by to be switched off again immediately after. The system may be very difficult to control, when an acoustic sound has also to be combined to an optimal sorting factor.
The purpose of the present and our invention is, to show a flexible and not visible and not stress-making guiding-system, especially used for guiding, and indi¬ rect sorting of loving fish to specified fields.
This has been achieved according to the invention by a current-carrying guiding arrangement laid on the bottom of a basin, surrounded by a magnetic field for guiding fish and specifically activated especially for a speci¬ fied size of fish. It is able to consist of guiding-pas¬ sages, established via especially two conductors, but where still the total system can exist of a wide spec¬ trum of current-carrying conductors arranged for a differentiated weight as size-guiding.
The present invention uses an observation, which many fisherman have made "at sea", where they have noticed on the bottom of he sea, where highvoltage cable has been laid,- that the cable, which is current-carrying, and which therefore has had a magnetic field around it self, worked as an unbreakable and not visible border. It has been observed that, for example big shoals of herrings are present on one side of a cable, while just on the other side it has not been possible to fish any herrings. And the same observation has been valid for other species of fish.
The manner of the working invention can generally be expressed as follows: a row of conductors have been laid on the bottom of a basin, beaming out from a regis¬ ter-unit, where this for example, can or has registered the weight as the size of the fish. Then after a regis- tering, especially where the sensor-equipment in the register-unit is registering one fish at a time, an electrical magnetic guiding-arrangement can be activat¬ ed.
In a special embodiment of the guiding system according to the invention the guiding system can be activated as a running guiding, via a sectional division of a single conductor along its length and by being able to be com¬ puter controlled, so that the guiding follows the fish as it moves along and by the conductor. And, for exam¬ ple, by at the same time being able to switch off in front of and behind the currently guided fish, but still being dependent on and adjusted to the actual gui¬ ded nearness or closeness of the guided row of fishes in relation to one another, and so guided that it follows the fish to its new room or box.
In another embodiment of the guiding system two mutually belonging passages- conductors can be equipped with an electrical conducting cross system or bottom system, which magnetically drives the fish ahead and which will prevent the fish coming from behind from swimming along¬ side or "close to".
In another embodiment of the guiding system, there can, as an ideal supplement, be established an area or field limitation in the existing reservoir or in an area with¬ out actual walls, but with those, which a permanent mag¬ netic field will bring from a conductor laid on the bot¬ tom, and perhaps, or alternatively, in the midway be- tween the surface and the bottom.
The invention shall be explained in the following under reference to the drawing, where
Fig. 1 shows a guiding mechanism for living fish in water, integrated with a register unit,
Fig. 2 shows a section of the guiding-mechanism with "running guiding",
Fig. 3 shows a section of the guiding-mechanism with "running guiding", and a cross-guiding unit and
Fig. 4 shows a guiding-mechanism for also guided or limited unit-field.
Fig. 1 shows a guiding mechanism 1 for living fish 3 in water integrated with a register unit 4, where the fish 3' first are guided through the register unit 4, by which the size and the weight can be registered via a computer. The computer can then give a message about the - correct guiding-passage 1 for guiding 9 of a specific size of fish 3. The guiding passage 1 and 1 can ideally come especially two by two working from the register unit 4 like sunbe¬ ams 1 and 1. The fish 3 will now automatically swim be- tween the current-carrying and magnetic 2 conductors 1, without any stress. And the ideal at the construction and the mutual placing of the conductors 1 is, that they are spreading apart 1 and 1 gradually in distance after the register unit 4. Therefore, the fish will au¬ tomatically seek more "moveable" 9 freedom.
Fig. 2 shows a section of the guiding mechanism 1 and 1 with running guiding 21, 2", and 2"1 as the guid¬ ing 9 running is rolling toward the single length 1, but still especially mutually in couples 1 and 1, which es¬ pecially is seen like the system for aeroplane guiding on an aircraft carrier.
The size A of the guiding section 2* on the conductor cable 8 can ideally be a little smaller than or the same size A as the fish 3. But the size A of the sec¬ tion guiding 2' could possibly be guided or adapted via extra data about the fish 3' via the register unit 4.
Fig. 3 shows a section of the guiding mechanism 1 and 1 with running guiding 2' and a cross-guide-unit 6, where the cross unit 6 running indirectly 5 would push the fish 3 forward 5, towards, for example, the unit area for the same size of fish 3. The system 1 and 1 with cross unit 6 could ideally run synchronously together with the guiding 2' , and the swimming speed of the fish 5 can thus perhaps by this be accelerated 3. The cross-unit 6 will especially also hold the fish, which are swimming after each other 3 and 3' and a litt¬ le apart from each other> so that there will be an ide¬ al separation distance between them. The cross guiding system.6 with the guiding system 1 and 2' could perhaps, modified a little independent of the size A, also be used before the register unit 4. Fig. 4 shows a guiding mechanism 1 and 1 for also guided or limited fields of units 7, where the limiting to this field of unit reservoirs 7 can be established via a conducting limit-wall 7.

Claims

C L A I S.
1. Guiding mechanism (1 and 1) for unstressed guiding of living fish (3) in water c h a r a c t e r i z e d by a current-carrying conductor laid on the bottom of a basin (1) surrounded by a for fish (3) ideal conducting magnetic field (21), and specifically activated especi¬ ally for specified sizes of fish (3 and A) , and being able to consist of guiding corridors or passages (1 and 1) established via especially two conductors (1 and 1) , but also more, and where the total system (1) can con- sist of a wide spectrum or radial beams of current-car¬ rying conductors (1 and 1) arranged (4) for a differen¬ tiated weight and size guiding.
2. Guiding system (1 and 1) according to claim 1, c h a r a c t e r i z e d by, being able to be activated (2') as a running (9) guiding, via section division (2') of the single conductor (1) along its conducting direc¬ tion, and by, for example, being able to be computer guided, so that the guiding (21) follows the progress (9) of the fish (3) along and by the conductors (1) , and at the same time being able to switch off in front of (2"') and behind (2") the fish (3) inquestion.
3. Guiding system (1 and 1) according to claims 1 and 2, c h a r a c t e r i z e d in that the length (A) of the running guiding (21) on the conductor (1) ideally can have a section size (A) , which is smaller than or the same as the length of the fish (3) , and that the section size • (A) possibly combined can also be adapted via computer, to fit every separate through-swimming fish (3) .
4. Guiding system (1 and 1) according to claims 1, 2 and 3, c h a r a c t e r i z e d in that, two conduc¬ tors (1 and 1) or the connected guiding complex (2' and
2') are equipped with an electrical conducting cross system (6) or bottom system (6) , which magnetically (6') drive the fish (3) ahead.
5. Guiding system (1 and 1) according claims 1, 2, 3 and 4, c h a r a c t e r i z e d by being able to be es¬ tablished as a field of delimitation (7) together with or in an existing reservoir or in an area (7) without any actual walls, only with those a permanent magnetic field (8) would bring from conductors (7) laid on the bottom or alternatively in the midway between the sur¬ face and the bottom.
PCT/DK1992/000369 1991-12-10 1992-12-07 Guiding-mechanism for unstressed guiding of living fish in water WO1993011664A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK1990/91 1991-12-10
DK199091A DK166399B1 (en) 1991-12-10 1991-12-10 GUIDE TO USTRESSED GUIDING OF LIVING FISH IN WATER

Publications (1)

Publication Number Publication Date
WO1993011664A1 true WO1993011664A1 (en) 1993-06-24

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ID=8109299

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1992/000369 WO1993011664A1 (en) 1991-12-10 1992-12-07 Guiding-mechanism for unstressed guiding of living fish in water

Country Status (3)

Country Link
AU (1) AU3157193A (en)
DK (1) DK166399B1 (en)
WO (1) WO1993011664A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2792659A (en) * 1954-11-10 1957-05-21 Fish Products Company Direct current electro-fishing arrangement
US2913846A (en) * 1958-03-24 1959-11-24 Alberton L Mclain Apparatus for controlling the upstream movement of fish

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2792659A (en) * 1954-11-10 1957-05-21 Fish Products Company Direct current electro-fishing arrangement
US2913846A (en) * 1958-03-24 1959-11-24 Alberton L Mclain Apparatus for controlling the upstream movement of fish

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DERWENT'S ABSTRACT, No. B6044 K/05, week 8305; & SU,A,914 011, (PYATNITSKII I I), 25 March 1982. *

Also Published As

Publication number Publication date
DK166399B1 (en) 1993-05-17
AU3157193A (en) 1993-07-19
DK199091A (en) 1993-05-17
DK199091D0 (en) 1991-12-10

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