FI58985C - Anordning foer avkaenning av naervaron av fisk i vatten - Google Patents

Anordning foer avkaenning av naervaron av fisk i vatten Download PDF

Info

Publication number
FI58985C
FI58985C FI761408A FI761408A FI58985C FI 58985 C FI58985 C FI 58985C FI 761408 A FI761408 A FI 761408A FI 761408 A FI761408 A FI 761408A FI 58985 C FI58985 C FI 58985C
Authority
FI
Finland
Prior art keywords
electrodes
signal
water
fish
bridge circuit
Prior art date
Application number
FI761408A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI761408A7 (show.php
FI58985B (fi
Inventor
Bjoern Kristinsson
Original Assignee
Bjoern Kristinsson
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 Bjoern Kristinsson filed Critical Bjoern Kristinsson
Publication of FI761408A7 publication Critical patent/FI761408A7/fi
Application granted granted Critical
Publication of FI58985B publication Critical patent/FI58985B/fi
Publication of FI58985C publication Critical patent/FI58985C/fi

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M7/00—Counting of objects carried by a conveyor
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Zoology (AREA)
  • Physics & Mathematics (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Animal Husbandry (AREA)
  • Marine Sciences & Fisheries (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Processing Of Meat And Fish (AREA)
  • Farming Of Fish And Shellfish (AREA)
FI761408A 1975-05-22 1976-05-19 Anordning foer avkaenning av naervaron av fisk i vatten FI58985C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IS2275A IS2275A7 (is) 1975-05-22 1975-05-22 Laxateljari fyrir opinn farveg
IS2275 1975-05-22

Publications (3)

Publication Number Publication Date
FI761408A7 FI761408A7 (show.php) 1976-11-23
FI58985B FI58985B (fi) 1981-01-30
FI58985C true FI58985C (fi) 1981-05-11

Family

ID=36702222

Family Applications (1)

Application Number Title Priority Date Filing Date
FI761408A FI58985C (fi) 1975-05-22 1976-05-19 Anordning foer avkaenning av naervaron av fisk i vatten

Country Status (8)

Country Link
US (1) US4070616A (show.php)
CA (1) CA1070797A (show.php)
DE (1) DE2622786A1 (show.php)
FI (1) FI58985C (show.php)
GB (1) GB1552463A (show.php)
IS (1) IS2275A7 (show.php)
NO (1) NO145064C (show.php)
SE (1) SE411490B (show.php)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5369365A (en) * 1989-05-04 1994-11-29 Waitman; David B. Combined water field strength and conductivity meter
CA2057833C (en) * 1991-12-17 1997-11-11 John H. C. Pippy Apparatus for monitoring moving aquatic organisms
WO2001025546A1 (en) * 1999-10-01 2001-04-12 Eikrem Webjorn O Method and apparatus for facilitating migration of fish past dams and other barriers in waterways
US6273639B1 (en) * 1999-10-01 2001-08-14 Webjorn Eikrem Method and apparatus for facilitating migration of fish past dams and other barriers in waterways
EP2439681A4 (en) * 2009-06-05 2016-11-23 Osaka N E D Machinery Corp INDIVIDUAL COUNTER USING FLUID
JP5561838B2 (ja) * 2012-07-20 2014-07-30 大阪エヌ・イー・ディー・マシナリー株式会社 個体計数装置
CN117158349B (zh) * 2023-08-02 2025-08-08 宁波大学 一种游动类水产动物生命体征参数的检测装置及检测方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893633A (en) * 1957-10-10 1959-07-07 Richard H Van Haagen Bi-directional electric counting system
US3223319A (en) * 1964-11-18 1965-12-14 George M Lucich Multiple electrode detector
US3439358A (en) * 1965-11-30 1969-04-15 George Washington Ltd Activity detectors
US3509325A (en) * 1966-11-15 1970-04-28 Us Interior Bidirectional counter apparatus with separate detectors

Also Published As

Publication number Publication date
CA1070797A (en) 1980-01-29
US4070616A (en) 1978-01-24
IS2275A7 (is) 1976-02-11
SE7605659L (sv) 1976-11-23
NO145064C (no) 1982-01-04
GB1552463A (en) 1979-09-12
SE411490B (sv) 1979-12-27
NO145064B (no) 1981-09-21
FI761408A7 (show.php) 1976-11-23
NO761726L (show.php) 1976-11-23
FI58985B (fi) 1981-01-30
DE2622786A1 (de) 1976-12-02

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: KRISTINSSON, BJOERN