JPS5240165A - 2-cycle vibrator for fish type identifying fish finder - Google Patents
2-cycle vibrator for fish type identifying fish finderInfo
- 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
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.
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4931874U (en) * | 1972-06-30 | 1974-03-19 |
-
1975
- 1975-09-26 JP JP11550275A patent/JPS5240165A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4931874U (en) * | 1972-06-30 | 1974-03-19 |
Cited By (1)
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 |
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