JPS5240165A - 2-cycle vibrator for fish type identifying fish finder - Google Patents

2-cycle vibrator for fish type identifying fish finder

Info

Publication number
JPS5240165A
JPS5240165A JP11550275A JP11550275A JPS5240165A JP S5240165 A JPS5240165 A JP S5240165A JP 11550275 A JP11550275 A JP 11550275A JP 11550275 A JP11550275 A JP 11550275A JP S5240165 A JPS5240165 A JP S5240165A
Authority
JP
Japan
Prior art keywords
fish
type identifying
vibrator
finder
cycle
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
JP11550275A
Other languages
Japanese (ja)
Inventor
Keisuke Honda
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP11550275A priority Critical patent/JPS5240165A/en
Priority to US05/725,392 priority patent/US4081783A/en
Publication of JPS5240165A publication Critical patent/JPS5240165A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/96—Sonar systems specially adapted for specific applications for locating fish
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:One vibrator is designed to make simultaneous transmission and reception of ultrasonic waves of high frequency in a thickness direction and low frequency in a diametral direction, whereby a simple device that can readily detect fish shoal by identifying types of fish is obtained.
JP11550275A 1975-09-26 1975-09-26 2-cycle vibrator for fish type identifying fish finder Pending JPS5240165A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP11550275A JPS5240165A (en) 1975-09-26 1975-09-26 2-cycle vibrator for fish type identifying fish finder
US05/725,392 US4081783A (en) 1975-09-26 1976-09-22 Fish finder capable of discriminating sizes of fish

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11550275A JPS5240165A (en) 1975-09-26 1975-09-26 2-cycle vibrator for fish type identifying fish finder

Publications (1)

Publication Number Publication Date
JPS5240165A true JPS5240165A (en) 1977-03-28

Family

ID=14664093

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11550275A Pending JPS5240165A (en) 1975-09-26 1975-09-26 2-cycle vibrator for fish type identifying fish finder

Country Status (1)

Country Link
JP (1) JPS5240165A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013174473A (en) * 2012-02-24 2013-09-05 Furuno Electric Co Ltd Underwater detection device and program

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4931874U (en) * 1972-06-30 1974-03-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4931874U (en) * 1972-06-30 1974-03-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013174473A (en) * 2012-02-24 2013-09-05 Furuno Electric Co Ltd Underwater detection device and program

Similar Documents

Publication Publication Date Title
JPS5424062A (en) Ultrasonic type measuring apparatus
JPS5260690A (en) Ultrasonic concentration measurement
JPS5240165A (en) 2-cycle vibrator for fish type identifying fish finder
BE841218A (en) SURFACE ELASTIC WAVE DEVICE ALLOWING THE ELIMINATION OF MULTI-TRANSIT ECHOES
JPS5214466A (en) Current measuring device
JPS5329161A (en) Detecting circuit for wave transmitted and received in ultrasonic object finder
JPS5320840A (en) Acoustic surface wave device
JPS52123265A (en) Ultrasonic transmitting and receiving device
JPS5284908A (en) Signal receiver
JPS5341111A (en) Dial signal sending device
JPS5313461A (en) Liquid level measuring device
JPS5210652A (en) Elastic surface wave device
JPS53180A (en) Ultrasonic surveying apparatus
JPS5442996A (en) Distance measuring device
JPS52123652A (en) Identification apparatus for ultrasonic reflection waves and noise wav es
JPS51141654A (en) Linear surveillance system by ultrasonic wave doppler radar
JPS5391793A (en) Abnormality judgement method of surface wave method ultrasonic probe
JPS51114093A (en) Radar unit
JPS51150992A (en) Ultrasonic wave transmitter receiver
JPS535591A (en) Linear substance detecting radar unit
JPS5263357A (en) Supersonic wave signal receiving device
JPS5272256A (en) Measurement of liquid levels by ultrasonic surface wave method
JPS5294153A (en) Ultrasonic vehicle sensor
JPS51113594A (en) Landupan-type vibrator
JPS5517409A (en) Display system for scanning sonar